Surface cleaning apparatus

Abstract

The utility model provides surface cleaning equipment. The surface cleaning equipment comprises an electric suction source, a supply tank, a recovery tank, a ground brush assembly and a controller; the floor brush assembly comprises a shell assembly, a stirrer, a cleaning head assembly, a first motor and a first sensor assembly. The first sensor assembly is configured at least for generating usage data indicative of proximity of the surface cleaning device to the wall; the controller is configured to be used for processing the use data generated by the first sensor assembly and transmitting control signals according to the use data generated by the first sensor assembly, and the control signals are at least configured to be used for turning on and turning off power supply to the first motor; increasing and decreasing the output power of the first motor; and / or increasing and reducing the rotating speed of the first motor.

Description

Technical Field

[0001] The present disclosure relates to a surface cleaning device. Background Art

[0002] A wet surface cleaning device refers to a cleaning device applicable to cleaning various hard surfaces in a household environment or an office environment.

[0003] Existing floor cleaners clean the floor with a high flow rate of cleaning liquid in a manner that can completely wet the floor to be cleaned. By wetting the hard floor surface, the cleaning head transfers dust from the floor into the cleaning liquid. After that, the cleaning liquid is removed from the hard floor surface and held in the recovery storage part as contaminated cleaning liquid.

[0004] Wet surface cleaning devices generally include: a cleaning liquid storage part for containing a cleaning solution; a recovery storage part for recovering contaminants recovered from the floor to be cleaned; a motor-driven vacuum source to form a vacuum flow path from the floor to be cleaned to the recovery storage part; a floor brush assembly that can move on the surface to be cleaned and clean the surface to be cleaned; a rechargeable battery to provide energy for each component; and a base station for charging and post-cleaning maintenance of the wet surface cleaning device.

[0005] However, when a wet surface cleaning device is in use, since its cleaning part is located in the front of the entire wet surface cleaning device, in some usage scenarios, such as when cleaning corners and other positions, no matter from which direction the wet surface cleaning device approaches the wall, there are always some areas that cannot be cleaned, which affects the user experience.

[0006] Therefore, it is necessary to redesign a surface cleaning device to solve the above technical problems. Summary of the Utility Model

[0007] To solve one of the above technical problems, the present disclosure provides a surface cleaning device.

[0008] According to one aspect of the present disclosure, there is provided a surface cleaning device, which includes:

[0009] An electric suction source, the electric suction source includes a vacuum motor, and the electric suction source is used to generate a vacuum;

[0010] A supply tank, the supply tank is used to store a cleaning liquid;

[0011] A recovery tank, the recovery tank is used to be connected to the electric suction source, and the vacuum generated by the electric suction source can be applied to the recovery tank; and

[0012] A floor brush assembly, the floor brush assembly is used to clean the surface to be cleaned;

[0013] Among them, the floor brush assembly includes:

[0014] A housing assembly that defines a receiving chamber;

[0015] A stirrer disposed within the receiving chamber; the cleaning liquid stored in the supply tank is distributed to the stirrer via a liquid dispenser to perform wet cleaning on the surface to be cleaned by the rotation of the stirrer, and the sewage after cleaning the surface to be cleaned is recovered and stored in the recovery tank;

[0016] A cleaning head assembly that is driven to be movable between a raised position and a lowered position; the cleaning head assembly is farther from the surface to be cleaned in the raised position than in the lowered position;

[0017] A first motor for driving the cleaning head assembly to generate a lifting motion and / or a rotational motion; and

[0018] A first sensor assembly configured to at least generate usage data indicating that the surface cleaning device is approaching a wall;

[0019] Among them, the surface cleaning device further includes a controller configured to process the usage data generated by the first sensor assembly and transmit a control signal according to the usage data generated by the first sensor assembly, and the control signal is at least configured to: turn on and off the power supply to the first motor; increase and decrease the output power of the first motor; and / or, increase and decrease the rotational speed of the first motor.

[0020] For the surface cleaning device according to at least one embodiment of the present disclosure, the control signal is further configured to: turn on and off the power supply to the electric suction source; and / or, increase and decrease the suction power of the electric suction source.

[0021] For the surface cleaning device according to at least one embodiment of the present disclosure, the controller is further configured to obtain the amount of cleaning liquid in the supply tank before the operating cycle of the first motor; when the first motor operates and the cleaning head assembly is in the lowered position, the cleaning liquid in the supply tank is provided to the cleaning head assembly via the liquid dispenser.

[0022] For the surface cleaning device according to at least one embodiment of the present disclosure, the controller controls the liquid dispenser and reduces the power of the liquid dispenser when the amount of cleaning liquid used is excessive during each operating cycle of the first motor; and / or, increases the power of the liquid dispenser when the amount of cleaning liquid used is too little during each operating cycle of the first motor.

[0023] For the surface cleaning device according to at least one embodiment of the present disclosure, it further includes:

[0024] A solenoid valve for opening or stopping the supply of cleaning liquid to the cleaning head assembly; wherein the controller is configured to control the solenoid valve and stop the supply of cleaning liquid to the cleaning head assembly when the amount of cleaning liquid used is excessive during each operating cycle of the first motor; and / or, when the amount of cleaning liquid used is too small during each operating cycle of the first motor, open the supply of cleaning liquid to the cleaning head assembly.

[0025] For a surface cleaning device according to at least one embodiment of the present disclosure, the controller is used to process usage data of the first motor and obtain a notification for maintenance of the cleaning head assembly based on the usage data of the first motor.

[0026] For a surface cleaning device according to at least one embodiment of the present disclosure, further comprising: a current sensor for detecting the current flowing through the first motor; the controller obtains a notification for maintenance of the cleaning head assembly based on the current data of the first motor detected by the current sensor.

[0027] For a surface cleaning device according to at least one embodiment of the present disclosure, the notification for maintenance of the cleaning head assembly includes one of the following: the cleaning head assembly is entangled; the cleaning head assembly rotates and jams; the cleaning head assembly moves and jams.

[0028] For a surface cleaning device according to at least one embodiment of the present disclosure, the controller processes usage data of the first motor and obtains a notification for maintenance of the cleaning element based on the usage data of the first motor.

[0029] For a surface cleaning device according to at least one embodiment of the present disclosure, the controller processes usage data of the first motor, obtains the working time of the first motor, and obtains a notification for maintenance of the cleaning element based on the working time of the first motor.

[0030] For a surface cleaning device according to at least one embodiment of the present disclosure, the maintenance of the cleaning element includes one of the following: the cleaning element needs to be cleaned, and the cleaning element needs to be replaced.

[0031] For a surface cleaning device according to at least one embodiment of the present disclosure, the first sensor assembly is located on the side wall on the right side in the forward direction of the floor brush assembly.

[0032] For a surface cleaning device according to at least one embodiment of the present disclosure, the first sensor assembly includes a proximity sensor for detecting a first distance between the side wall of the floor brush assembly and a wall.

[0033] According to the surface cleaning device of at least one embodiment of the present disclosure, when the first distance is greater than the preset distance threshold, the cleaning head assembly is maintained in the raised position, or the first motor is controlled to act and the cleaning head assembly is raised; when the first distance is less than or equal to the preset distance threshold, the cleaning head assembly is maintained in the lowered position, or the first motor is controlled to act and the cleaning head assembly is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are included in this specification and form a part of this specification.

[0035] Figure 1 FIG. shows a schematic diagram of a surface cleaning system according to one aspect of the present disclosure.

[0036] Figure 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure.

[0037] Figure 3 is a schematic structural diagram of a floor brush assembly according to an embodiment of the present disclosure.

[0038] Figure 4 is a schematic structural diagram of the floor brush assembly from another angle according to an embodiment of the present disclosure.

[0039] Figure 5 is a partial schematic structural diagram of a floor brush assembly according to an embodiment of the present disclosure.

[0040] Figure 6 is a schematic internal structural diagram of a floor brush assembly according to an embodiment of the present disclosure.

[0041] Figure 7 is a schematic structural diagram of a first motor and an actuating assembly according to an embodiment of the present disclosure.

[0042] Figure 8 is an exploded schematic structural diagram of a first motor and an actuating assembly according to an embodiment of the present disclosure.

[0043] Figure 9 is an exploded schematic structural diagram of an actuating assembly according to an embodiment of the present disclosure.

[0044] Figure 10 is a schematic structural diagram of an actuating assembly according to an embodiment of the present disclosure.

[0045] Figure 11 is a schematic structural diagram of a damping element according to an embodiment of the present disclosure.

[0046] Figure 12 It is a schematic structural diagram of an avoidance part according to an embodiment of the present disclosure.

[0047] Figure 13 It is a schematic structural diagram of an avoidance part according to another embodiment of the present disclosure.

[0048] Figure 14 It is a schematic structural diagram of a cleaning head assembly according to an embodiment of the present disclosure.

[0049] Figure 15 It is a schematic structural diagram of a liquid supply assembly according to an embodiment of the present disclosure.

[0050] Figure 16 It is a schematic diagram of the principle of a liquid supply assembly according to an embodiment of the present disclosure.

[0051] Figure 17 It is a schematic structural diagram of a valve stem and a valve cover according to an embodiment of the present disclosure.

[0052] Figure 18 It is a schematic cross-sectional structural diagram of a valve component according to an embodiment of the present disclosure.

[0053] Figure 19 It is a schematic structural diagram of a first sensor assembly according to an embodiment of the present disclosure.

[0054] Figure 20 is Figure 19 an enlarged schematic diagram of part A of

[0055] Figure 21 It is a schematic structural diagram of a scraping assembly and a suction head according to an embodiment of the present disclosure.

[0056] Figure 22 It is a schematic structural diagram of a scraping assembly and a suction head from another angle according to an embodiment of the present disclosure.

[0057] Figure 23 It is a schematic structural diagram of a scraping assembly according to an embodiment of the present disclosure.

[0058] Figure 24 It is a schematic structural diagram of a scraping assembly from another angle according to an embodiment of the present disclosure.

[0059] Figure 25 It is a schematic structural diagram of a suction head according to an embodiment of the present disclosure.

[0060] Figure 26 It is a schematic structural diagram of a floor brush assembly from one angle according to an embodiment of the present disclosure.

[0061] Figure 27 is Figure 26 the enlarged structural schematic diagram of

[0062] Figure 28 is the structural schematic diagram of another angle of the floor brush assembly according to an embodiment of the present disclosure.

[0063] Figure 29 is Figure 28 the enlarged schematic diagram of part C of

[0064] Figure 30 is the structural schematic diagram of one angle of the floor brush assembly according to an embodiment of the present disclosure.

[0065] Figure 31 is the structural schematic diagram of yet another angle of the floor brush assembly according to an embodiment of the present disclosure. Detailed Embodiments

[0066] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the sake of description, only parts related to the present disclosure are shown in the drawings.

[0067] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and embodiments.

[0068] Unless otherwise specified, the exemplary embodiments / examples shown will be understood to provide exemplary features of various details of some ways that can implement the technical concept of the present disclosure in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various embodiments / examples can be additionally combined, separated, interchanged, and / or rearranged.

[0069] In the drawings, cross - hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated, the presence or absence of cross - hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be performed in an order different from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. Additionally, the same reference numerals denote the same components.

[0070] When a component is referred to as being “on” or “above” another component, “connected to” or “coupled to” another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be intervening components. However, when a component is referred to as being “directly on” another component, “directly connected to” or “directly coupled to” another component, there are no intervening components. For this reason, the term “connected” can refer to physical connection, electrical connection, etc., and can have or not have intervening components.

[0071] For descriptive purposes, the present disclosure may use spatial relative terms such as “under,” “below,” “beneath,” “lower,” “above,” “upper,” “on,” “over,” “higher,” and “side (e.g., as in “sidewall”)” etc., to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the figures is turned over, a component described as “under” or “beneath” another component or feature will then be positioned “above” the other component or feature. Thus, the exemplary term “under” can encompass both an “above” and a “below” orientation. Additionally, the device can be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0072] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, unless the context clearly dictates otherwise, the singular forms “a,” “an,” and “the” are also intended to include the plural forms. Additionally, when the terms “comprises” and / or “comprising” and variations thereof are used in this specification, it is specified that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms and not as terms of degree, so they are used to explain the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0073] Figure 1 A schematic diagram of a surface cleaning system according to one aspect of the present disclosure is shown.

[0074] As Figure 1 shown, the present disclosure provides a surface cleaning system, which includes a surface cleaning device and a base station 900.

[0075] The surface cleaning device is configured to be able to clean a surface to be cleaned (such as a floor surface, etc.). Preferably, the surface cleaning device is able to perform wet cleaning on the surface to be cleaned, that is, it is formed as a wet surface cleaning device, and the liquid after cleaning the surface to be cleaned is recycled to the surface cleaning device. Unless otherwise specified in this disclosure, the surface to be cleaned is arranged substantially horizontally, that is, it is formed as a horizontal plane.

[0076] The base station 900 is configured for the surface cleaning device to dock and is able to supply electrical energy to the surface cleaning device to charge the rechargeable battery of the surface cleaning device.

[0077] Although the surface cleaning device of the present disclosure is shown in the form of a floor washer, those skilled in the art should be aware that the term "surface cleaning device" can be used herein to describe various types of household cleaning devices, including autonomous processing devices configured to provide some semi-autonomous or autonomous capabilities. Examples of household cleaning devices include: floor washers, vacuum cleaners with mopping functions, sweeping robots with scrubbing functions, window cleaning robots, etc.

[0078] Referring again Figure 1 , in the present disclosure, the surface cleaning system is designed to support the surface cleaning device for cleaning and maintenance. In some examples, the surface cleaning device can be configured to perform a semi-autonomous or autonomous dirt particle collection process. For example, the surface cleaning device may include a wet floor cleaning device. The surface cleaning device may include one or more controllers connected to sensors, which are arranged on or inside the housing of the surface cleaning device. The controller can be connected to or integrated with a connection component, which is configured to collect data from the sensors. In some examples, the surface cleaning device can identify the dirtiness of the floor during a single cleaning cycle through sensors. This identification can be based on sensor information and the usage time of the agitator 630.

[0079] The controller can also be configured to transmit output signals to the controlled components of the surface cleaning device and execute a cleaning operation cycle. Examples of controlled components include an electric suction source, a motor driving the agitator 630, etc.

[0080] The base station 900 can be configured to execute a self-cleaning cycle and a heat drying cycle. Thus, when the surface cleaning device is stored and supported on the base station 900, the corresponding cleaning and maintenance operations start to be executed.

[0081] In some embodiments, various mechanisms and algorithms can be adopted to determine the maintenance method of the agitator 630 of the surface cleaning device to adapt to the current working conditions. These working conditions can be defined by the user or identified by the surface cleaning device using occupancy data related to the environment, such as the dirtiness record of the floor to be cleaned, etc. By selecting the automatic cleaning mode through these mechanisms and algorithms, the power consumption of the surface cleaning device can be reduced, thereby improving its operation efficiency.

[0082] As Figure 1 shown, in some embodiments, the surface cleaning system may further include an access point 1100, a server 1200, a remote control device 1300, a database 1400, and a wireless communication link 1500. The server 1200 may include a data server, a cloud server, a server associated with an automation service provider, a proxy server, a mail server, a network server, an application server, a database server, a communication server, a home server, a mobile server, or any combination thereof.

[0083] For example, the surface cleaning device may upload data (such as notifications) to an application hosted by the server 1200 for publishing data related to the autonomous functions performed by the surface cleaning device. For example, a user may view the data published by the surface cleaning device through an application running on the remote control device 1300 to view the functions performed by the surface cleaning device. The server 1200 may also transmit various information to the surface cleaning device, such as location information, motion control instructions, and other information, instructions, or commands related to the autonomous operation of the surface cleaning device.

[0084] The database 1400 may store data, which may include location information, control instructions, consumable information (such as agitator 630 information, filter information), water full information, dirt information, battery information, and other operation information, as well as other information, instructions, or commands related to the maintenance operations of the surface cleaning device (such as the occupancy time of the self-cleaning cycle, the occupancy time of the hot drying cycle, the charging power during the maintenance of the surface cleaning device by the base station 900, etc.). The surface cleaning device may retrieve the stored data from the database 1400 through the access point 1100.

[0085] In some cases, the surface cleaning device may also communicate directly with another device (e.g., using a peer-to-peer (P2P) or device-to-device (D2D) protocol), such as a smartphone, a Bluetooth device, a Wi-Fi device, a mobile station, a user station, a mobile client, etc.

[0086] The wireless communication link 1500 shown in the surface cleaning system may include an uplink (UL) transmission from the surface cleaning device to the access point 1100 or the server 1200, and / or a downlink (DL) transmission from the access point 1100 or the server 1200 to the surface cleaning device. The downlink transmission may also be referred to as a forward link transmission, while the uplink transmission may also be referred to as a reverse link transmission. The wireless communication link 1500 may transmit two-way communication and / or one-way communication. The wireless communication link 1500 may include one or more connections, including but not limited to Wi-Fi, Bluetooth, peer-to-peer, LAN, wireless local area network (WLAN), Ethernet, fiber optic, and / or other connection types related to wireless communication systems.

[0087] In some examples, the environment 2000 can be part of a structure, such as a residential or commercial building. For example, the environment 2000 can be a home, particularly a room, including one or more different floor materials and objects spread throughout the room. The surface cleaning device can be configured to perform a cleaning function within the scope of the home. For example, the surface cleaning device can perform a semi-autonomous (or autonomous) process of collecting surface dirt particles within the above-mentioned geographical boundaries under the manual control of the user.

[0088] When the wet household surface cleaning device is working, the agitator 630 with liquid rotates at a high speed and adheres to a large amount of dirt. To avoid causing secondary pollution, it is necessary to keep the real-time self-cleaning of the agitator 630 in the structural design. Usually, the cover part 620 is used to shield and collect the dirt and liquid particles thrown out by the centrifugal force when the agitator 630 rotates at a high speed, and the dirt adhered to the surface of the agitator 630 is scraped off in real time by arranging a scraping strip interfering with it in the accommodation chamber and sucked away through the suction nozzle 640. Due to the design reasons in terms of structure, the agitator 630 cannot be set independently of the cover part and the accommodation chamber. The wet household surface cleaning device will encounter difficult-to-reach cleaning areas during the cleaning operation, such as the connection between the floor and the wall. To ensure the cleaning efficiency, the wet household surface cleaning device needs to continuously design space for the agitator 630 to clean the edges. However, due to the above design reasons, it is difficult for the agitator 630 itself to achieve the expected edge cleaning effect. Often, when the housing of the surface cleaning device reaches the wall, the edge of the agitator 630 still does not reach the target cleaning area and cannot clean the target cleaning area.

[0089] Figure 2 It is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure.

[0090] As Figure 2 shown, the surface cleaning device of the present disclosure is configured to be able to perform wet cleaning on the surface to be cleaned, wherein the surface to be cleaned can be a floor surface, preferably a household floor surface. At the same time, after the surface cleaning device performs wet cleaning on the floor surface, the dirt and liquid (sewage) after cleaning the surface to be cleaned can be recycled to the surface cleaning device.

[0091] As Figure 2 shown, the surface cleaning device can include components such as a handle part 100, a main body part 200, a supply tank 300, a recycling tank 400, a connecting part 500, and a floor brush assembly 600.

[0092] The handle portion 100 is detachably provided on the main body portion 200. Users can operate the surface cleaning device by operating the handle portion 100, and enable the main body portion 200 to be in an upright state (non-working state) and an inclined state (working state).

[0093] More preferably, user interaction buttons can be provided on the handle portion 100. Users can trigger the user interaction buttons to control the surface cleaning device, such as controlling the start and stop of the surface cleaning device, the liquid supply speed of the surface cleaning device, and the suction power of the electric suction source, etc., so as to make the user experience of the surface cleaning device better.

[0094] In one example, the main body portion 200 forms the main body of the surface cleaning device; the main body portion 200 is pivotally connected to the floor brush assembly 600 through the connecting portion 500; moreover, the main body portion 200 can also accommodate components such as the supply tank 300 and the recovery tank 400. In the present disclosure, the supply tank 300 and the recovery tank 400 can be detachably installed on the side portion of the main body portion 200, and the side portions where they are installed can be opposite side portions of the main body portion 200. In another example, at least one of the supply tank 300 and the recovery tank 400 can also be detachably installed on a part of the floor brush assembly 600.

[0095] In one example, the thicknesses of the supply tank 300 and the recovery tank 400 are set to be less than the widths, so as to ensure sufficient capacity and enable the height of the main body portion 200 to be less than a predetermined height, such as 120 mm, after lying flat.

[0096] The supply tank 300 has a flat shape and includes a cavity formed by a plurality of wall surfaces for accommodating the cleaning liquid, and the capacity of the supply tank 300 can be set to 500 mL, etc. In addition, the supply tank 300 can include a handle, and users can install or remove the supply tank 300 through the handle.

[0097] The supply tank 300 is used to store the cleaning liquid to be dispensed. Correspondingly, the supply tank 300 can be connected to a liquid dispenser (not shown in the figure), so that the cleaning liquid in the supply tank 300 can be pressurized by the liquid dispenser and then provided to the floor brush assembly 600 or provided to the surface to be cleaned near the floor brush assembly 600, thereby enabling wet cleaning of the surface to be cleaned through the cleaning liquid.

[0098] In a preferred embodiment, the liquid dispenser can include a liquid supply pump, which can extract the cleaning liquid from the supply tank 300, pressurize the cleaning liquid, and then provide it to the liquid outlet component, and provide the pressurized cleaning liquid to the agitator 630 of the floor brush assembly 600 or provide it to the surface to be cleaned near the agitator 630.

[0099] In the present disclosure, the cleaning liquid can be one or more of any suitable liquids, including but not limited to cleaning water, concentrated detergent, diluted detergent, or a mixture thereof, etc. Additionally, the cleaning liquid can be a normal-temperature cleaning liquid or a high-temperature cleaning liquid.

[0100] The main body 200 is formed with a receiving space. The recovery tank 400 is detachably disposed in the main body 200 and located within the receiving space. When there is a large amount of liquid stored in the recovery tank 400, the user can remove the recovery tank 400, pour out the internal sewage, and clean up the solid waste. At this time, a part of the outer surface of the recovery tank 400 forms a part of the outer surface of the surface cleaning device.

[0101] In order to recover the liquid after cleaning the surface to be cleaned, the recovery tank 400 can be connected to the floor brush assembly 600 through a recovery pipeline 401. Correspondingly, a mixture of dirt, sewage, and gas (solid-liquid mixture) can be recovered to the recovery tank 400 via the recovery pipeline 401. In one example, a solid-liquid separator can be provided in the recovery tank 400 to separate the solid and liquid mixture recovered by the surface cleaning device after cleaning the surface to be cleaned in the solid-liquid separator, so that the separated solid is retained in the solid-liquid separator and the separated liquid is stored inside the recovery tank 400.

[0102] In the present disclosure, the surface cleaning device further includes an electric suction source (not shown in the figure). The electric suction source can include a vacuum motor, whereby a vacuum (negative pressure) can be generated through the electric suction source. At the same time, the electric suction source can be connected to the recovery tank 400 to provide the negative pressure to the recovery tank 400, thereby realizing the forced flow of gas and sewage in the recovery pipeline 401. In the present disclosure, the gas discharged from the electric suction source can flow to the outside of the surface cleaning device through the gaps on a part of the outer surface of the surface cleaning device.

[0103] In one example, the connecting part 500 can include a universal joint so as to enable the main body 200 to rotate relative to the floor brush assembly 600 in two directions.

[0104] In another example, the connecting part 500 can include a multi-axis joint, which can couple the main body 200 with the floor brush assembly 600 to allow the main body 200 to rotate relative to the floor brush assembly 600 along a first direction and a second direction.

[0105] The main body portion 200 can be pivoted to an upright position (which can also be referred to as a storage position) through the connecting portion 500. In this position, the angle between the main body portion 200 and the surface of the floor brush assembly 600 (or the placement ground) is 80° to 90°, preferably about 80°. In this position, the surface cleaning device is in a self-supporting posture (also known as an upright posture), that is, the main body portion 200 etc. can be supported by the floor brush assembly 600, and the upright posture can be achieved without relying on other objects.

[0106] Figure 3 It is a schematic structural diagram of the floor brush assembly 600 according to an embodiment of the present disclosure. Figure 4 It is a schematic structural diagram of the floor brush assembly 600 from another angle according to an embodiment of the present disclosure. Figure 5 It is a partial schematic structural diagram of the floor brush assembly 600 according to an embodiment of the present disclosure. Figure 6 It is a schematic internal structural diagram of the floor brush assembly 600 according to an embodiment of the present disclosure.

[0107] As Figure 3 and Figure 4 shown, the floor brush assembly 600 of the present disclosure may include components such as a base portion 610, a cover portion 620, a stirrer 630, a suction nozzle 640, and a cleaning head assembly 650.

[0108] The base portion 610 and the cover portion 620 of the present disclosure can integrally form the outer shell assembly of the floor brush assembly 600. Correspondingly, the outer shell assembly is pivotally connected to the main body portion 200 through the connecting portion 500. And, the outer shell assembly is arranged to be suitable for moving on the surface of the floor to be cleaned. For example, two rolling wheels can be provided on the base portion 610 of the outer shell assembly, and the outer shell assembly can move on the surface to be cleaned by rolling the rolling wheels on the surface to be cleaned.

[0109] The outer shell assembly defines an accommodation chamber. Specifically, the accommodation chamber is located in the front half of the floor brush assembly 600 (with the moving direction of the surface cleaning device when cleaning the surface to be cleaned as the front) so as to accommodate the first stirring member 630 in the accommodation chamber. Correspondingly, the first stirring member 630 is also located in the front half of the floor brush assembly 600. In a specific embodiment, the front surface of the base portion 610 and a part of the lower surface of the cover portion 620 both form at least part of the side walls of the accommodation chamber; that is, the accommodation chamber of the present disclosure is jointly formed by the base portion 610 and the cover portion 620.

[0110] The agitator 630 is configured to agitate the surface to be cleaned. Specifically, the agitator 630 is detachably disposed on the base portion 610 and can be driven to rotate. That is, when the surface cleaning device is performing a cleaning operation or a self-cleaning operation, the agitator 630 can be driven by the motor to rotate on its own. Thus, the agitator 630 can be in frictional contact with the surface to be cleaned, and the cleaning of the surface to be cleaned can be achieved. During the process of the agitator 630 being in frictional contact with the surface to be cleaned, the cleaning liquid can be supplied to the agitator 630, thereby realizing the wet cleaning of the surface to be cleaned.

[0111] In one example, the agitator 630 of the floor brush assembly 600 can be a drum-type cleaning member. Those skilled in the art should know that the floor brush assembly 600 can also be formed as a crawler-type cleaning device, etc. At this time, the agitator 630 of the floor brush assembly 600 can be a crawler-type cleaning member, etc. In the present disclosure, the drum-type cleaning member is taken as an example for illustration.

[0112] In one embodiment, the motor can be disposed within the housing assembly and drive the agitator 630 to rotate by means of synchronous belt transmission (i.e., the agitator 630 is operably connected to the motor). In another embodiment, the motor can be disposed within the agitator 630 and can drive the agitator 630 to rotate. In the present disclosure, the agitator 630 can rotate along a first axis. More preferably, the first axis can be a horizontal straight line in the transverse direction, and the transverse direction is the direction perpendicular to the front-rear direction. The front-rear direction is the moving direction of the surface cleaning device when cleaning the surface to be cleaned.

[0113] The cover portion 620 is disposed on the base portion 610 and is configured to partially surround the agitator 630. Moreover, the cover portion 620 can interfere with at least a part of the outer surface of the agitator 630, so that the cleaning liquid on the agitator 630 is distributed more evenly.

[0114] As Figure 5 and Figure 6 shown, a suction nozzle 640 is formed on the base portion 610. In the present disclosure, the suction nozzle 640 is disposed adjacent to the agitator 630 and is located behind the agitator 630. In the present disclosure, the suction nozzle 640 is connected to the recovery pipeline 401 and forms the starting point of the recovery path.

[0115] As Figure 4 shown, the cleaning head assembly 650 of the present disclosure is driven to be able to move between a raised position and a lowered position. The cleaning head assembly 650 is farther from the surface to be cleaned in the raised position than in the lowered position. Moreover, in the lowered position, the working range of the cleaning head assembly 650 is outside the horizontal plane projection of the housing assembly. That is, the cleaning head assembly 650 of the present disclosure can clean an area outside the horizontal plane projection of the housing assembly.

[0116] That is to say, when the surface cleaning device of the present disclosure is in use, for example, when cleaning a horizontal surface to be cleaned, the cleaning head assembly 650 is not always in contact with the surface to be cleaned (e.g., a horizontal surface), but selectively contacts the surface to be cleaned. For example, when the surface cleaning device is cleaning a surface to be cleaned at a position such as a corner, the cleaning head assembly 650 can be controlled to descend, and the cleaning head assembly 650 is in a lowered position, at which time the cleaning head assembly 650 can contact the surface to be cleaned and clean the surface to be cleaned. Then, when the surface cleaning device is away from a position such as a corner, the cleaning head assembly 650 can be controlled to rise, thereby making the cleaning head assembly 650 in an elevated position, in which the cleaning head assembly 650 is in a non-operating state, and at this time, the cleaning liquid may not be provided to the cleaning head assembly 650, and the cleaning head assembly 650 may not be driven to rotate.

[0117] In a preferred embodiment, the cleaning head assembly 650 of the present disclosure is disposed close to the side wall on the right side of the floor brush assembly 600 .

[0118] The floor brush assembly 600 of the present disclosure may further include a first motor 660 and an actuating assembly 670, wherein the first motor 660 may be disposed in the housing assembly and located inside the housing assembly, so that the first motor 660 can remain relatively fixed to the housing assembly; in a preferred embodiment, the first motor 660 may be connected to a reducer and output power outwardly through the output shaft of the reducer. In the present disclosure, the reducer may be a gear reducer, etc., and through the setting of the gear reducer, the rotation axis of the first motor 660 may be different from the rotation axis of the output shaft of the reducer.

[0119] In a preferred embodiment, the rotation axis of the first motor 660 may be located in a vertical plane, and the vertical plane is perpendicular to the front-to-back direction, which is the direction of movement of the floor brush assembly 600 on the surface to be cleaned when the surface cleaning device cleans the surface to be cleaned. In the vertical plane, the rotation axis of the first motor 660 has an angle of a preset angle with the vertical line.

[0120] Similarly, the rotation axis of the first motor 660 can be arranged in parallel or approximately in parallel with the rotation axis of the output shaft of the reducer, thereby, the reducer of the present disclosure can have a relatively simple structure.

[0121] The first motor 660 is in transmission connection with the actuating assembly 670 , so that the first motor 660 can drive the actuating assembly 670 to rise and fall and / or rotate.

[0122] Figure 7 is a schematic structural diagram of a first motor 660 and an actuating assembly according to an embodiment of the present disclosure. Figure 8Exploded structural schematic diagram of the first motor 660 and the actuating assembly according to an embodiment of the present disclosure.

[0123] As Figure 7 and Figure 8 shown, the actuating assembly 670 of the present disclosure is driven to be capable of moving between a first position and a second position so that the height of the actuating assembly 670 relative to the bottom surface of the housing assembly is changed; wherein, when the actuating assembly 670 is in the first position, the actuating assembly 670 drives the cleaning head assembly 650 and causes the cleaning head assembly 650 to be in the raised position; when the actuating assembly 670 is in the second position, the actuating assembly 670 drives the cleaning head assembly 650 and causes the cleaning head assembly 650 to be in the lowered position.

[0124] Meanwhile, when the actuating assembly 670 is in the second position, the actuating assembly 670 can be driven to rotate, and the actuating assembly 670 drives the cleaning head assembly 650 to rotate. Similarly, when the actuating assembly 670 is in the first position, the actuating assembly 670 can also be driven to rotate, and at the same time the actuating assembly 670 can drive the cleaning head assembly 650 to rotate. Among them, the rotation directions of the cleaning head assembly 650 in the raising direction and the lowering direction are opposite.

[0125] Figure 9 Exploded structural schematic diagram of the actuating assembly according to an embodiment of the present disclosure.

[0126] In a specific embodiment, as Figure 9 shown, the actuating assembly 670 of the present disclosure may include components such as a first bracket 671, a second bracket 672, and a limiting element 673.

[0127] Among them, the first bracket 671 is arranged to receive the driving force of the first motor 660, that is to say, the first bracket 671 can be fixed to the output shaft of the first motor 660 or fixed to the output shaft of the speed reducer. Thus, the position of the first bracket 671 in the height direction does not change, and at the same time, the first bracket 671 can be driven by the first motor 660 and rotate.

[0128] Specifically, the first bracket 671 of the present disclosure is integrally cylindrical, and a non-circular hole connected to the output shaft of the first motor 660 or the output shaft of the speed reducer is provided at its upper end. In actual use, the output shaft of the first motor 660 or the output shaft of the speed reducer can be inserted into the non-circular hole, that is, the transmission connection between the first motor 660 and the first bracket 671 is realized.

[0129] In addition, a convex block 671A is provided on the outer peripheral surface of the first bracket 671, and the convex block 671A is provided near the lower end of the first bracket 671.

[0130] The second bracket 672 cooperates with the first bracket 671 such that when the second bracket 672 is in the second position and the first bracket 671 rotates in the first direction, the first bracket 671 drives the second bracket 672 to rotate; when the second bracket 672 is in the second position and the first bracket 671 rotates in the second direction, the first bracket 671 drives the second bracket 672 to move from the second position to the first position.

[0131] Specifically, a spiral groove 672A is formed on the inner surface of the second bracket 672, and a bump 671A is disposed in the spiral groove 672A and can slide along the spiral groove 672A so that the first bracket 671 and the second bracket 672 cooperate.

[0132] Specifically, as Figure 7 shown, at this time the second bracket 672 is in the first position. At this first position, if the first bracket 671 is driven and rotates clockwise (viewed from the top-down direction, the same below), the bump 671A of the first bracket 671 will be restricted in position by a limiting block at the lower end of the spiral groove 672A of the second bracket 672, and the second bracket 672 will be driven to rotate clockwise synchronously with the first bracket 671. At this time, although the cleaning head assembly 650 is not in contact with the surface to be cleaned, however, when the cleaning head assembly 650 rotates, cleaning liquid can be provided to the cleaning head assembly 650, and the cleaning head assembly 650 can be wetted and be in a state capable of cleaning the surface to be cleaned.

[0133] At this first position, if the first bracket 671 is driven and rotates counterclockwise (viewed from the top-down direction, the same below), the bump 671A of the first bracket 671 will slide in the spiral groove 672A of the second bracket 672. At the same time, since the position of the first bracket 671 remains unchanged in the vertical direction, the second bracket 672 will be pushed and move downward. Next, when the second bracket 672 gradually descends and reaches the second position, the bump 671A will be restricted in position by a restricting element 673. At this time, the second bracket 672 will not descend further, but will rotate counterclockwise synchronously with the first bracket 671.

[0134] Since at least a part of the cleaning head assembly 650 will be in contact with the surface to be cleaned when the second bracket 672 is in the second position, when the second bracket 672 rotates, the cleaning head assembly 650 can be driven by the second bracket 672 to rotate, thereby realizing wet cleaning of the surface to be cleaned. In particular, the cleaning head assembly 650 can clean positions such as the corners, improving the cleaning effect of the surface cleaning device.

[0135] In the present disclosure, a limiting element 673 is disposed on the second bracket 672 and is used to limit the relative movement amount between the first bracket 671 and the second bracket 672. That is to say, the limiting element 673 of the present disclosure can be fixed together with the second bracket 672, and at least a part of the limiting element 673 is used to limit the bump of the first bracket 671.

[0136] Specifically, the lower end of the spiral groove 672A of the second bracket 672 does not penetrate the second bracket 672, that is, the lower end of the spiral groove 672A of the second bracket 672 has a limiting block, and through this limiting block, the bump 671A of the first bracket 671 will not break away from the lower end of the spiral groove 672A. Moreover, the limiting element 673 is fixed to the upper end of the second bracket 672, and the upper end of the spiral groove 672A of the second bracket 672 is blocked by the limiting element 673, so that the bump 671A of the first bracket 671 will not break away from the upper end of the spiral groove 672A either.

[0137] During the process of assembling the actuating assembly, the bump of the first bracket 671 can be placed in the spiral groove 672A first, and then the limiting element 673 is installed at the upper end of the second bracket 672, thus realizing the installation of the actuating assembly, and the installation process is convenient.

[0138] In a preferred embodiment, the second bracket 672 further includes a protruding portion 672B extending upward, and the protruding portion 672B can be inserted into the first bracket 671 from the lower end; thus, when the second bracket 672 is in the first position, at least a part of the protruding portion 672B can be disposed inside the first bracket 671; meanwhile, the cleaning head assembly 650 can be fixed to the protruding portion 672B, that is, the upper end of the cleaning head assembly 650 can be inserted and fixed inside the protruding portion 672B. Thus, the side cleaning module composed of the first motor 660, the actuating assembly 670 and the cleaning head assembly 650 in the present disclosure has a smaller height.

[0139] In a preferred embodiment, the cleaning head assembly 650 can be detachably fixed to the protruding portion 672B and can be driven and rotated by the protruding portion 672B.

[0140] Figure 10 It is a schematic structural diagram of an actuating assembly according to an embodiment of the present disclosure. Figure 11 It is a schematic structural diagram of a damping element according to an embodiment of the present disclosure.

[0141] As Figure 10 and Figure 11As shown, the actuation assembly of the present disclosure may include a damping element 674, which can be fixed to the housing assembly. For example, the damping element 674 is fixed to the base portion 610 of the housing assembly and is located below the base portion 610 of the housing assembly. In other words, the actuation assembly 670 of the present disclosure can be entirely located below the base portion 610. Correspondingly, the output shaft of the first motor 660 or the output shaft of the speed reducer can pass through the base portion 610 and be in driving connection with the actuation assembly.

[0142] The damping element 674 can be located outside the second bracket 672. For example, the damping element 674 can be in a cylindrical shape and sleeved outside the second bracket 672. Thus, the damping element 674 can apply a preset damping to the second bracket 672.

[0143] Specifically, the damping applied by the damping element 674 to the second bracket 672 needs to satisfy that the second bracket 672 does not rotate during the ascending or descending process, or even if the second bracket 672 rotates during the ascending or descending process, the rotation speed of the second bracket 672 is less than that of the first bracket 671. In other words, during the ascending or descending process of the second bracket 672, the second bracket 672 cannot rotate at the same speed as the first bracket 671. Otherwise, the second bracket 672 will not be able to perform the ascending or descending action.

[0144] In a specific embodiment, as Figure 11 shown, the damping element 674 includes a base portion 674A, which is a cylindrical component, and a notch is provided on the side wall of the base portion 674A. A damping portion 674B is arranged in the notch, and the damping portion 674B can apply damping to the second bracket 672.

[0145] In the present disclosure, both ends of the damping portion 674B are connected to the side wall of the notch through elastic members 674C. Thus, when the second bracket 672 is not arranged inside the damping element 674, at least part of the damping portion 674B can be located inside the base portion 674A. Correspondingly, when the second bracket 672 is installed inside the damping element 674, the damping element 674 can apply a positive pressure to the second bracket 672, and a frictional force is formed between the damping element 674 and the second bracket 672 through the positive pressure. Further, the damping effect of the damping element 674 on the second bracket 672 is formed through the frictional force.

[0146] On the other hand, the damping applied by the damping element 674 to the second bracket 672 cannot be too large. Specifically, the maximum value of the damping applied by the damping element 674 to the second bracket 672 is set such that when the second bracket 672 is in the first position or the second position and the second bracket 672 does not perform the ascending or descending action, the first bracket 671 can drive the second bracket 672 to rotate.

[0147] In the present disclosure, the number of damping portions 674B can be set to a plurality. For example, the number of damping portions 674B can be set to three, and these three damping portions 674B can be evenly distributed along the circumferential direction of the base portion 674A.

[0148] Figure 12 It is a schematic structural view of the avoidance portion 611 according to an embodiment of the present disclosure. Figure 13 It is a schematic structural view of the avoidance portion according to another embodiment of the present disclosure.

[0149] As Figure 12 shown, the housing assembly of the present disclosure limits the avoidance portion 611, and at least a part of the actuating assembly 670 is disposed within the avoidance portion 611.

[0150] In one embodiment, the lower surface of the base portion 610 is formed to be substantially planar, that is, the base portion 610 has a substantially planar bottom wall. Among them, at least a part of the bottom wall of the base portion 610 is recessed upward to form the avoidance portion 611. Thus, the avoidance portion 611 includes an avoidance space, and the avoidance portion 611 includes an avoidance side wall 611A, an avoidance top wall 611B, and an avoidance edge 611C; the avoidance side wall 611A and the avoidance top wall 611B can enclose the above-mentioned avoidance space, and the avoidance edge 611C is the peripheral area of the avoidance space.

[0151] In the present disclosure, the cleaning head assembly 650 is rotatably disposed at the avoidance portion, so that when the cleaning head assembly 650 rotates, or when the cleaning head assembly 650 changes its height relative to the bottom wall of the base portion 610, the cleaning head assembly 650 does not interfere with the avoidance edge 611C of the avoidance portion 611.

[0152] In a preferred embodiment, the base portion 610 includes a substantially planar side wall. For example, this side wall can be located in a certain vertical plane, and at least a part of the avoidance portion 611 extends on the side wall. That is to say, in the present disclosure, even when the cleaning head assembly 650 is in the raised position, at least a part of the cleaning head assembly 650 can still be located outside the projection of the floor brush assembly 600 on the horizontal plane. Based on this, an area for avoiding the cleaning head assembly 650 needs to be left on the side wall of the base portion 610, and at least a part of the avoidance portion 611 can extend on the side wall of the base portion 610.

[0153] Moreover, the avoidance portion 611 forms an avoidance edge 611C on the bottom wall of the base portion 610, and at least one of these avoidance edges 611C is inclinedly disposed. Thus, the avoidance edge 611C can be substantially parallel to the inclined cleaning head assembly 650 to facilitate accommodating at least a part of the cleaning head assembly 650 in the avoidance portion 611.

[0154] More preferably, at least a part of the avoidance side wall 611A of the avoidance portion 611 is formed in an arc shape. Correspondingly, the disc-shaped cleaning head assembly 650 can be better accommodated by the arc-shaped avoidance side wall 611A.

[0155] Figure 14 It is a schematic structural view of the cleaning head assembly 650 according to an embodiment of the present disclosure.

[0156] As Figure 14 shown, the cleaning head assembly 650 of the present disclosure may include: a cleaning disc 651 and a cleaning element 652; wherein, the cleaning disc 651 can be detachably arranged on the actuating assembly 670, for example, detachably arranged on the second bracket 672, so that the cleaning head assembly 650 of the present disclosure can be removed from the floor brush assembly 600.

[0157] The cleaning disc 651 of the present disclosure can move synchronously with the second bracket 672. Specifically, when the second bracket 672 rises or falls, it can drive the cleaning disc 651 to rise or fall synchronously. At the same time, when the second bracket 672 rotates, it can drive the cleaning disc 651 to rotate.

[0158] The cleaning element 652 can be fixed to the cleaning disc 651. For example, the cleaning element 652 can be bonded to the cleaning disc 651 by Velcro. Thus, when the cleaning disc 651 rotates, it can drive the cleaning element 652 to rotate and make the cleaning element 652 in frictional contact with the surface to be cleaned, so as to realize the scrubbing of the surface to be cleaned.

[0159] In the present disclosure, the cleaning element 652 can be prepared from materials such as flannelette and can be formed in a circular ring shape; moreover, a rubberized part 653 is formed on the outer side of the cleaning disc 651, and the rubberized part 653 can be located above the cleaning element 652. In the present disclosure, a plurality of hollow openings are formed on the rubberized part 652. When the cleaning liquid is provided to the hollow opening positions of the rubberized part 653, the cleaning liquid can flow to the cleaning element 652 under the action of gravity to realize the wetting of the cleaning element 652.

[0160] The cleaning disc 651 and the cleaning element 652 of the present disclosure can be formed in a circular structure, or can be formed in a semi-circular structure or a fan-shaped structure, etc. The present disclosure will not elaborate one by one here.

[0161] When the surface cleaning device is located on the surface to be cleaned, which is generally formed as a horizontal plane, there is a first included angle between the cleaning element 652 and the surface to be cleaned, and the angle of this first included angle is greater than 0°. In other words, when the actuation assembly 670 is in the second position, the cleaning head assembly 650 can be in a working state. At this time, at least part of the cleaning element 652 of the cleaning head assembly 650 can contact the surface to be cleaned. Thus, through the rotation of the cleaning element 652, frictional contact between the cleaning element 652 and the surface to be cleaned is achieved, and the cleaning of the surface to be cleaned is realized.

[0162] Preferably, the cleaning element 652 has a circular profile. Along the transverse direction of the floor brush assembly 600, the cleaning element 652 has a first part located outside the housing assembly of the floor brush assembly 600 and a second part located inside the housing assembly of the floor brush assembly 600; wherein, the fact that the cleaning element 652 has a first part located outside the housing assembly of the floor brush assembly 600 means that the projection of the first part of the cleaning element 652 on the surface to be cleaned is located outside the projection of the housing assembly on the surface to be cleaned.

[0163] At this time, when the actuation assembly 670 is in the second position, at least part of the first part of the cleaning element 652 can contact the surface to be cleaned. Correspondingly, at least part of the second part of the cleaning element 652 can be away from the surface to be cleaned, and at least part of the second part is not in contact with the surface to be cleaned.

[0164] Correspondingly, when the actuation assembly 670 is in the first position, the cleaning element 652 is entirely away from the surface to be cleaned and does not contact the surface to be cleaned. At this time, the second part of the cleaning element 652 is located at a higher position than the first part of the cleaning element 652.

[0165] In the present disclosure, the cleaning disk 651 has a rotation axis, and the cleaning element 652 has a rotation axis. The rotation axis of the cleaning disk 651 is the same as the rotation axis of the cleaning element 652, that is, the cleaning head assembly 650 has only one rotation axis.

[0166] Moreover, the rotation axis of the cleaning head assembly 650 does not coincide with the rotation axis of the first motor 660. More specifically, the rotation axis of the cleaning head assembly 650 in the present disclosure coincides with the rotation axis of the output shaft of the speed reducer. Correspondingly, the rotation axis of the cleaning head assembly 650 and the rotation axis of the first motor 660 are arranged in parallel; of course, due to the different structures of the speed reducer, the rotation axis of the first motor 660 can also be non - parallel to the rotation axis of the cleaning head assembly 650.

[0167] In a preferred embodiment, the rotation axis of the cleaning head assembly 650 is farther from the middle of the floor brush assembly 600 than the rotation axis of the first motor 660. Thus, the first motor 660 of the present disclosure can be arranged as far as possible at a position away from the edge of the floor brush assembly 600, so that sufficient space can be left for installing the cleaning head assembly 650.

[0168] In the present disclosure, the rotation axis of the cleaning head assembly 650 can be located in a certain vertical plane, and this vertical plane is perpendicular to the front-back direction, which is the movement direction of the floor brush assembly 600 on the surface to be cleaned when the surface cleaning device cleans the surface to be cleaned. In this vertical plane, the rotation axis of the cleaning head assembly 650 has a preset angle with the vertical straight line, that is, the rotation axis of the cleaning head assembly 650 is inclined. Preferably, the rotation axis of the cleaning head assembly 650 can also be parallel or substantially parallel to the rotation axis of the first motor 660.

[0169] Figure 15 is a schematic structural view of a liquid supply assembly according to an embodiment of the present disclosure. Figure 16 is a schematic diagram of the principle of a liquid supply assembly according to an embodiment of the present disclosure. Figure 17 is a schematic structural view of a valve stem and a valve cover according to an embodiment of the present disclosure. Figure 18 is a schematic cross-sectional structural view of a valve component according to an embodiment of the present disclosure.

[0170] As Figures 15 to 18 shown, the floor brush assembly 600 of the present disclosure further includes a liquid supply assembly 680, and the cleaning liquid is provided to the cleaning head assembly 650 through this liquid supply assembly 680.

[0171] The liquid supply assembly 680 of the present disclosure can be connected to a liquid supply pump; of course, this liquid supply assembly 680 can also be connected to the supply tank 300 through an independently provided pump.

[0172] Specifically, the liquid supply assembly 680 can include a valve device 681 and a water spray head 682; wherein, the valve device 681 can be fixed to the base portion 610 of the housing assembly. Thus, the valve device 681 can be driven by the actuating assembly 670 (for example, by the second bracket 672 of the actuating assembly 670) to be in an open state or a closed state. Among them, when the valve device 681 is in the open state, the cleaning liquid can be provided to the cleaning head assembly 650 through the liquid supply assembly 680, and when the valve device 681 is in the closed state, the liquid supply assembly 680 cannot provide the cleaning liquid to the cleaning head assembly 650.

[0173] In another embodiment, since the cleaning head assembly 650 can be fixedly connected to the second bracket 672 of the actuating assembly 670, correspondingly, it can also be considered that the valve device 681 can be driven by the cleaning head assembly 650 to be in an open state or a closed state.

[0174] As Figure 17 and Figure 18 shown, the valve device 681 of the present disclosure includes a valve body 681A, a valve stem 681B, and a valve cover 681C; wherein, the valve body 681A is formed with a liquid flow path, and the liquid flow path can be arranged along the axial direction of the valve body 681A; meanwhile, the valve body 681A further includes a water inlet pipeline and a water outlet pipeline, and both the water inlet pipeline and the water outlet pipeline are communicated with the liquid flow path of the valve body 681A; wherein, the water inlet pipeline can be connected to a liquid supply pump, and the water outlet pipeline can be connected to a water spray head 682.

[0175] The valve cover 681C is arranged at the upper end of the valve body 681A and closes the valve body 681A from the upper end; the valve stem 681B is inserted into the valve body 681A from the lower end of the valve body 681A, and the valve stem 681B has an open position and a closed position; wherein, when the valve stem 681B is located at the open position, the valve device 681 can be in an open state; correspondingly, when the valve stem 681B is located at the closed position, the valve device 681 can be in a closed state.

[0176] In the present disclosure, the valve stem 681B can be driven by the actuating assembly 670 to move between the open position and the closed position. Specifically, when the second bracket 672 of the actuating assembly 670 is located at the second position, the valve stem 681B is in the open position; when the second bracket 672 generates an upward movement and moves from the second position to the first position, the second bracket 672 can drive the valve stem 681B to rise and move from the open position to the closed position. When the second bracket 672 descends and moves from the first position to the second position, the valve stem 681B can move from the open position to the closed position under the action of the spring 681D.

[0177] As Figure 18 shown, the valve device 681 is in a closed state, that is, the valve stem 681B is located at the closed position, and at this time, the water inlet pipeline and the water outlet pipeline are not communicated; those skilled in the art should know that the water inlet pipeline can be any one of the two pipelines, and correspondingly, the water outlet pipeline is the other of the two pipelines. In a preferred embodiment, the water inlet pipeline is located above the water outlet pipeline, and thus, the water outlet pipeline can be conveniently connected to the water spray head 682.

[0178] When the valve stem 681B is driven by the spring 681D and moves downward, the valve stem 681B can be located at the open position, and the water inlet pipeline and the water outlet pipeline are communicated.

[0179] In the present disclosure, an outer flange is formed at the lower end of the second bracket 672 of the actuating assembly 670. The lower end of the valve stem 681B can contact the upper surface of the outer flange of the second bracket 672. Thus, when the second bracket 672 rotates, the lower end of the valve stem 681B can be in sliding contact with the upper surface of the outer flange of the second bracket 672, so that the valve stem 681B does not affect the rotation of the second bracket 672 of the actuating assembly 670. Correspondingly, when the second bracket 672 moves upward, that is, when the second bracket 672 moves from the second position to the first position, the valve stem 681B is driven to move upward. Correspondingly, the valve stem 681B can move from the open position to the closed position. When the second bracket 672 moves downward, the valve stem 681B is allowed to move downward. Correspondingly, under the action of the restoring force provided by the spring 681D, the valve stem 681B can move from the closed position to the open position.

[0180] Referring again to Figure 18 , in the present disclosure, the valve stem 681B includes a first sealing portion 681B1 and a second sealing portion 681B2. One end of the spring can abut against the valve cover, and the other end of the spring can abut against the second sealing portion 681B2. Both the first sealing portion 681B1 and the second sealing portion 681B2 can be in sealing contact with the inner wall of the liquid flow path of the valve body 681A.

[0181] Moreover, the position of the first sealing portion 681B1 is set to always be below the water outlet pipe; the position of the second sealing portion 681B2 is set to be able to be between the water inlet pipe and the water outlet pipe, and to be able to be below the water outlet pipe, and not to be above the water inlet pipe. Thus, during the up and down movement of the valve stem 681B in the present disclosure, the valve device can be in an open state or a closed state. Specifically, when the valve stem 681B is in the open position, the second sealing portion 681B2 is at a position below the water outlet pipe; when the valve stem 681B is in the closed position, the second sealing portion 681B2 is at a position between the water inlet pipe and the water outlet pipe.

[0182] In the present disclosure, since the valve stem 681B needs to be driven by the actuating assembly 670, the lower end of the valve stem 681B can pass through the avoidance top wall 611B of the avoidance portion 611 and be located in the avoidance space of the avoidance portion 611.

[0183] The spray head 682 is disposed on the base portion 610, and one end of the spray head 682 can pass through the side wall of the avoidance portion 611 and be located in the avoidance space of the avoidance portion 611. Thus, the cleaning liquid provided by the spray head 682 can be provided to the cleaning head assembly 650, for example, to the hollow portion of the rubber-coated portion 653 of the cleaning head assembly 650.

[0184] Figure 19Schematic structural diagram of a first sensor assembly 690 according to an embodiment of the present disclosure. Figure 20 is Figure 19 Schematic enlarged view of part A of.

[0185] As Figure 19 and Figure 20 As shown in and, the floor brush assembly 600 of the present disclosure further includes a first sensor assembly 690, which is configured to at least generate usage data indicating that the surface cleaning device is approaching a wall. Among them, the first sensor assembly 690 can be disposed on the housing assembly of the floor brush assembly 600, for example, on the cover portion 620 of the housing assembly; of course, the first sensor assembly 690 can also be disposed on the base portion 610 of the housing assembly. More preferably, the first sensor assembly 690 can be located directly above the cleaning head assembly 650.

[0186] The first sensor assembly 690 can be a proximity sensor, for example, a distance sensor, which is used to detect a first distance between the side wall of the floor brush assembly 600 and the wall.

[0187] In some embodiments, the side wall of the floor brush assembly 600 is disposed substantially vertically. Specifically, the side wall of the housing assembly of the floor brush assembly 600 forms a substantially vertical plane, and this substantially vertical plane is substantially perpendicular to the transverse direction of the floor brush assembly 600. More specifically, both the base portion 610 and / or the cover portion 620 of the housing assembly of the floor brush assembly 600 include side walls disposed substantially vertically. Accordingly, the first sensor assembly 690 is disposed on this substantially vertical side wall, so that the distance between the side wall of the floor brush assembly 600 and the wall (external object) can be accurately detected by the first sensor assembly 690.

[0188] In the present disclosure, when the distance sensor is provided as one, it can be disposed on the side wall on the right side of the advancing direction of the floor brush assembly 600. That is to say, when the surface cleaning device is actually used, due to the particularity of the user's walking trajectory, generally the right side of the floor brush assembly 600 is prone to contact with a wall or the like. Accordingly, disposing the distance sensor on the right side wall can enable the distance sensor to more easily detect the distance between the floor brush assembly 600 and the wall, and has a better usage effect. On the other hand, the distance sensor can also be provided as two. Accordingly, the distance sensor can be disposed at both the left and right side walls of the advancing direction of the floor brush assembly 600. Thus, the distance between the wall surfaces on both sides of the floor brush assembly 600 and the floor brush assembly 600 can be sensed by the distance sensor.

[0189] In a preferred embodiment, the distance sensor includes an optical sensor, an infrared sensor, a laser sensor, etc. At this time, the distance sensor may include a transmitting unit 691 and a receiving unit 692; the transmitting unit 691 is capable of transmitting an optical signal, an infrared signal or a laser signal; the receiving unit 692 is capable of receiving the echo signal of the optical signal, the infrared signal or the laser signal, so as to obtain the distance between the distance sensor and the wall according to the time difference between the optical signal, the infrared signal or the laser signal transmitted by the transmitting unit 691 and the echo signal. In addition, since the position of the distance sensor is fixed on the housing assembly, the distance between the housing assembly (i.e., the floor brush assembly 600) and the wall can be obtained.

[0190] In the present disclosure, a through hole is formed in the cover portion 620, and both the transmitted signal and the echo signal of the distance sensor can be transmitted through the through hole.

[0191] The surface cleaning device of the present disclosure may further include a controller, which can be connected to the first sensor assembly 690, so as to be able to receive the distance between the floor brush assembly 600 and the wall detected by the first sensor assembly 690, and can control the operation of the first motor 660 according to the distance between the floor brush assembly 600 and the wall. Specifically, the controller can turn on and off the power supply to the first motor 660; at this time, when the power supply to the first motor 660 is turned on, the first motor 660 can be in a working state, and correspondingly, the cleaning head assembly 650 can also be in a working state. Thus, the cleaning head assembly 650 can clean the surface to be cleaned, especially the corner position near the wall; when the power supply to the first motor 660 is turned off, the first motor 660 is in a non-working state, and correspondingly, the cleaning head assembly 650 is also in a non-working state. At this time, the cleaning head assembly 650 can be located at the raised position so that the cleaning head assembly 650 does not contact the surface to be cleaned.

[0192] More specifically, the controller can compare the first distance between the floor brush assembly 600 and the wall detected by the first sensor assembly 690 with a preset distance threshold. When the first distance is greater than the preset distance threshold, it indicates that the floor brush assembly 600 is not close to the wall. At this time, when the cleaning head assembly 650 is located at the raised position, the cleaning head assembly 650 is kept at the raised position; when the cleaning head assembly 650 is located at the lowered position, the controller can control the first motor 660 to reverse, so that the cleaning head assembly 650 rises from the lowered position to the raised position and the cleaning head assembly 650 is in a non-working state; and after the cleaning head assembly 650 is in the raised position, the power supply to the first motor 660 is turned off.

[0193] In another case, when the first distance is less than or equal to a preset distance threshold, it indicates that the floor brush assembly 600 is working at a position close to the wall. At this time, when the cleaning head assembly 650 is in the raised position, the power supply of the first motor 660 is turned on, so that the first motor 660 is in the working state. When the first motor 660 is working, it can cause the cleaning head assembly 650 to descend, that is, the cleaning head assembly 650 can be lowered from the raised position to the lowered position. At this lowered position, the cleaning head assembly 650 can clean the surface to be cleaned; when the cleaning head assembly 650 is in the lowered position, the working state of the first motor 660 is maintained, so that the cleaning head assembly 650 can continuously clean the surface to be cleaned.

[0194] For a similar working process, the controller of the present disclosure can also increase and decrease the output power of the first motor 660; specifically, when the first distance is greater than the preset distance threshold, if the first motor 660 is in the working state, the output power of the first motor 660 can be reduced; when the first distance is less than or equal to the preset distance threshold, as time goes by, the output power of the first motor 660 can be increased, so that the cleaning head assembly 650 has a better edge cleaning effect.

[0195] On the other hand, the controller of the present disclosure can also increase and decrease the rotation speed of the first motor 660. Specifically, when the first distance is greater than the preset distance threshold, if the first motor 660 is in the working state, the rotation speed of the first motor 660 can be reduced; when the first distance is less than or equal to the preset distance threshold, as time goes by, the rotation speed of the first motor 660 can be increased, so that the cleaning head assembly 650 has a better edge cleaning effect.

[0196] In the present disclosure, the controller can also control the electric suction source. Specifically, the controller can turn on and off the power supply to the electric suction source, so that the electric suction source is in the working state. In addition, the controller can also increase and decrease the suction power of the electric suction source. Specifically, when the first distance is greater than the preset distance threshold, at this time the cleaning head assembly 650 is in the non-working state, the suction power of the electric suction source can be reduced; on the contrary, when the first distance is greater than the preset distance threshold, the cleaning head assembly 650 is in the working state, and the controller increases the suction power of the electric suction source, so that both the cleaning head assembly 650 and the agitator 630 can obtain the negative pressure required to clean the surface to be cleaned, so that the surface cleaning device of the present disclosure has a better cleaning effect.

[0197] The controller is also used to obtain the amount of cleaning liquid in the supply tank 300 before the operating cycle of the first motor 660; for example, a sensor for detecting the volume of the cleaning liquid can be provided in the supply tank 300. Thus, the controller can obtain the amount of cleaning liquid in real time and can obtain the consumption speed of the cleaning liquid accordingly.

[0198] When the first motor 660 operates and the cleaning head assembly 650 is in the lowered position, the cleaning liquid in the supply tank 300 is provided to the cleaning head assembly 650 via the liquid dispenser.

[0199] The controller controls the liquid dispenser and reduces the power of the liquid dispenser when the amount of cleaning liquid used is excessive during each operating cycle of the first motor 660; that is, during the operation of the first motor 660, when the consumption rate of the cleaning liquid is greater than or equal to a preset first speed threshold, the amount of cleaning liquid used during each operating cycle of the first motor 660 will be excessive. At this time, the power of the liquid dispenser can be reduced to reduce the consumption rate of the cleaning liquid.

[0200] Similarly, when the amount of cleaning liquid used is too small during each operating cycle of the first motor 660, the power of the liquid dispenser is increased; that is, during the operation of the first motor 660, when the consumption rate of the cleaning liquid is less than or equal to a preset second speed threshold, the amount of cleaning liquid used during each operating cycle of the first motor 660 will be too small. At this time, the power of the liquid dispenser can be increased to increase the consumption rate of the cleaning liquid. Thus, during the use of the surface cleaning device, an appropriate amount of cleaning liquid can be provided to the surface to be cleaned, improving the cleaning effect of the surface to be cleaned.

[0201] More preferably, the first speed threshold is greater than the second speed threshold.

[0202] In a preferred embodiment, the surface cleaning device of the present disclosure may further include a solenoid valve for opening or stopping the supply of cleaning liquid to the cleaning head assembly 650; wherein, the controller is configured to control the solenoid valve and stop supplying cleaning liquid to the cleaning head assembly 650 when the amount of cleaning liquid used is excessive during each operating cycle of the first motor 660; and / or, open the supply of cleaning liquid to the cleaning head assembly 650 when the amount of cleaning liquid used is too small during each operating cycle of the first motor 660.

[0203] The solenoid valve of the present disclosure and the spray head 682 together form a liquid distribution assembly of another embodiment. That is, the valve device 681 of the present disclosure can be replaced by the solenoid valve to form different technical solutions.

[0204] In the present disclosure, the controller is configured to process the usage data of the first motor 660 and obtain a notification for the maintenance of the cleaning head assembly 650 based on the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may further include a current sensor configured to detect the current flowing through the first motor 660. Thus, when the current flowing through the first motor 660 is greater than or equal to a preset current threshold, it can be determined that the first motor 660 is in a stalled state, and at this time, the user needs to be notified to perform maintenance on the cleaning head assembly 650.

[0205] Specifically, the notifications for the maintenance of the cleaning head assembly 650 include: the cleaning head assembly 650 being entangled; the cleaning head assembly 650 rotating and getting stuck; and / or, the cleaning head assembly 650 moving and getting stuck, etc.

[0206] In addition, the controller processes the usage data of the first motor 660 and obtains a notification for the maintenance of the cleaning element 652 based on the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may further include a current sensor configured to detect the current flowing through the first motor 660. Thus, the controller can obtain the working time of the first motor 660 based on the current flowing through the current sensor. Correspondingly, the working time of the cleaning element 652 can be obtained based on the working time of the first motor 660. When the working time of the cleaning element 652 is greater than a first preset time threshold, the cleaning element 652 needs to be cleaned. At this time, the surface cleaning device can dock at the base station 900, and the base station 900 can clean the cleaning element 652 of the surface cleaning device. On the other hand, when the working time of the cleaning element 652 is greater than or equal to a second preset time threshold, the cleaning element 652 needs to be replaced. Thus, the cleaning element 652 of the present disclosure can be in a clean state, and correspondingly, the cleaning effect of the surface cleaning device on the surface to be cleaned is improved.

[0207] Figure 21 is a schematic structural view of a scraping assembly and a suction head according to an embodiment of the present disclosure. Figure 22 is a schematic structural view of the scraping assembly and the suction head from another angle according to an embodiment of the present disclosure. Figure 23 is a schematic structural view of a scraping assembly according to an embodiment of the present disclosure. Figure 24 is a schematic structural view of the scraping assembly from another angle according to an embodiment of the present disclosure. Figure 25 is a schematic structural view of a suction head according to an embodiment of the present disclosure.

[0208] As Figures 21 to 24As shown, the floor brush assembly 600 of the present disclosure may further include a scraping assembly 700, wherein the scraping assembly 700 is installed on the housing assembly; when the cleaning head assembly 650 changes from the raised position to the lowered position, at least a part of the cleaning head assembly 650 interferes with the scraping assembly 700, so that through the rotation of the cleaning head assembly 650, the scraping assembly 700 scrapes off the dirt adhered to the cleaning head assembly 650.

[0209] In a preferred embodiment, the scraping assembly 700 can be set to be detachable from the housing assembly or can be installed on the housing assembly. Specifically, when the user no longer needs the side cleaning function, the user can detach the cleaning head assembly 650 from the housing assembly. Correspondingly, the user can also detach the scraping assembly 700 from the housing assembly. When the user needs to maintain the cleaning head module 650 and the scraping assembly 700, the user can also detach the cleaning head module 650 and the scraping assembly 700 from the housing assembly, and then clean or replace the cleaning head module 650, and clean and keep the scraping assembly 700 clean.

[0210] In the present disclosure, the scraping assembly 700 is installed on the base portion 610 of the housing assembly. For example, the scraping assembly 700 can be fixed to the bottom wall of the base portion 610, and at least a part of the scraping assembly 700 is located below the base portion 610.

[0211] In some embodiments, in the working state, the rolling wheels and the agitator 630 support the floor brush assembly 600, such as supporting the base portion 610 of the floor brush assembly, and preventing the scraping assembly 700 from interfering with the surface to be cleaned; that is, during the operation of the surface cleaning device, there is a spaced arrangement between the bottom surface of the scraping assembly 700 and the surface to be cleaned, so that the scraping assembly 700 does not contact the surface to be cleaned. Thus, the scraping assembly 700 does not damage the surface to be cleaned, and moreover, the surface to be cleaned does not damage the scraping assembly 700.

[0212] In a preferred embodiment, the bottom surface of the scraping assembly 700 is substantially flush with the bottom surface of the housing assembly. Thus, there is substantially the same distance between the bottom surface of the housing assembly, the bottom surface of the scraping assembly 700 and the surface to be cleaned; on the other hand, at least a part of the bottom surface of the scraping assembly 700 of the present disclosure may also protrude from the bottom surface of the housing assembly. Thus, the distance between the bottom surface of the scraping assembly 700 and the surface to be cleaned is less than the distance between the bottom surface of the housing assembly and the surface to be cleaned. Thus, components such as the cleaning head assembly 650 and the first motor 660 of the present disclosure do not protrude too much above the upper surface of the housing assembly in the vertical direction. Correspondingly, the surface cleaning device of the present disclosure is more aesthetically pleasing.

[0213] In one embodiment, the scraping assembly 700 is connected to the suction nozzle 640 or the recovery pipeline 401 of the floor brush assembly 600 through the suction head 710; more preferably, the suction head 710 of the present disclosure can be fixed to the base portion 610 of the housing assembly and is located inside the base portion 610. That is to say, after the dirt and cleaning liquid on the cleaning head assembly 650 are removed by the scraping assembly 700 of the present disclosure, the dirt and cleaning liquid can be sucked to the suction nozzle 640 or the recovery pipeline 401 through the suction head 710, and then enter the recovery tank 400 along with the airflow in the recovery pipeline 401.

[0214] In the present disclosure, since the cleaning head assembly 650 is used less frequently, and when the cleaning head assembly 650 is in use, the contact area between the cleaning head assembly 650 and the surface to be cleaned is small. Accordingly, there is less dirt on the cleaning head assembly 650. Therefore, the suction head 710 of the present disclosure has a smaller inner diameter, so that most of the negative pressure in the recovery pipeline 401 is provided to the suction nozzle 640, and a small part is provided to the suction head 710; thus, the floor brush assembly 600 of the present disclosure can reasonably distribute the negative pressure, improving the cleaning effect of the floor brush assembly 600.

[0215] In a preferred embodiment, a solenoid valve can be provided between the suction head 710 and the suction nozzle 640 or the recovery pipeline 401, so as to open or close the liquid flow path between the suction head 710 and the suction nozzle 640 or the recovery pipeline 401 by controlling the opening and closing of the solenoid valve. Specifically, when the cleaning head assembly 650 of the present disclosure is in the working state (at this time, the cleaning head assembly 650 is in the lowered position), the solenoid valve can be opened so that the dirt and cleaning liquid generated by the cleaning head assembly 650 can be sucked into the recovery tank 400; on the other hand, when the cleaning head assembly 650 of the present disclosure is in the non-working state (at this time, the cleaning head assembly 650 is in the raised position), the solenoid valve can be closed, so that the negative pressure can be completely provided to the suction nozzle 640, improving the cleaning effect of the floor brush assembly 600. At the same time, since the electric suction source can work at a lower power, the battery life of the surface cleaning device can also be improved.

[0216] In the present disclosure, a filter screen 711 is provided at one end of the suction head 710 located inside the scraping assembly 700; thus, the suction head 710 can only suck the liquid in the solid-liquid mixture (a mixture of dirt and cleaning liquid) stored in the scraping assembly 700. Accordingly, the solids in the solid-liquid mixture are retained in the scraping assembly 700, effectively avoiding the blockage of the liquid flow path of the suction head 710 when the diameter of the liquid flow path of the suction head 710 is small.

[0217] After the surface cleaning device finishes the cleaning operation, the scraping assembly 700 can be detached from the housing assembly of the floor brush assembly 600 so as to clean in time the solids in the solid-liquid mixture held in the scraping assembly 700. On the other hand, the filter net 711 can be detached from the suction head 710. Thus, the filter net 711 can also be detached from the suction head 710, and the solid dirt attached to the filter net 711 can be cleaned to prevent these solid dirt from generating odors.

[0218] The structure of the scraping assembly 700 will be described in detail below with reference to the accompanying drawings.

[0219] As Figures 22 to 24 shown, the scraping assembly 700 of the present disclosure may include components such as a bottom plate 701, a first side plate 702, a second side plate 703, a liquid storage part 704, and a scraping plate 705.

[0220] The bottom plate 701 includes a first direction and a second direction. Among them, along the first direction, the upper surface of the bottom plate 701 is inclined. For example, along the direction from the center of the floor brush assembly 600 to the side wall of the floor brush assembly 600, the upper surface of the bottom plate 701 slopes upward from the first end to the second end. Thus, the cleaning liquid can flow from the second end to the first end under the action of gravity.

[0221] At both ends of the second direction of the bottom plate 701, a first side plate 702 and a second side plate 703 are respectively arranged. Among them, the first direction and the second direction are different directions. For example, the first direction and the second direction may be perpendicular to each other.

[0222] In the present disclosure, the first side plate 702 and the second side plate 703 have substantially the same structure, and both include a first part 702A and a second part 702B; in the present disclosure, the first side plate 702 and the second side plate 703 having substantially the same structure includes that the first side plate 702 and the second side plate 703 have a symmetrically arranged structure.

[0223] The following takes the structure of the first side plate 702 as an example for description. The first part 702A of the first side plate 702 is arranged close to the first end of the first direction of the bottom plate 701. Correspondingly, the second part 702B of the first side plate 702 is arranged close to the second end of the first direction of the bottom plate 701, and in the height direction, the first part 702A of the first side plate 702 has a larger size than the second part 702B. In other words, the upper end of the first part 702A is farther from the upper surface of the bottom plate 701 than the upper end of the second part 702B.

[0224] In the present disclosure, a liquid storage portion 704 is provided on a bottom plate 701. The liquid storage portion 704 is provided at a first end of the bottom plate 701 in a first direction. At the same time, a baffle member 706 is also provided at a second end of the bottom plate 701 in the first direction. Thus, the bottom plate 701, the liquid storage portion 704, the first side plate 702, the second side plate 703, and the baffle member 706 together form a liquid storage tank with an upward opening.

[0225] At the same time, a scraper 705 is also provided on the bottom plate 701. The scraper 705 is configured to extend upward from the upper surface of the bottom plate 701 by a preset distance. That is to say, the scraper 705 of the present disclosure has a preset dimension in the height direction, and the upper end of the scraper 705 is higher than the upper end of the second portion 702B of the first side plate 702, and is also higher than the upper end of the second portion of the second side plate 703. That is to say, when the cleaning head assembly 650 of the present disclosure is in a working state, that is, when the cleaning head assembly 650 is in a lowered position, at least a part of the cleaning head assembly 650 can interfere with the scraper 705 and does not interfere with the second portion 702B of the first side plate 702, and correspondingly, does not interfere with the second portion of the second side plate 703. Thus, the dirt and cleaning liquid carried on the cleaning head assembly 650 can be scraped off by the scraper 705 and recovered into the above-mentioned liquid storage tank.

[0226] That is to say, considering that the cleaning head assembly 650 has different rotation directions, the dirt and cleaning liquid scraped off by the scraper 705 can be recovered into the area between the scraper 705 and the first side plate 702, or into the area between the scraper 705 and the second side plate 703; then, these dirt and cleaning liquid can flow to the first end of the bottom plate 701 under the action of gravity or under the action of negative pressure adsorption.

[0227] In a preferred embodiment, the surface of the upper end of the scraper 705 is provided as an inclined surface, and it slopes downward along the direction from the middle of the floor brush assembly 600 to the edge of the floor brush assembly 600 (that is, along the direction from the first end to the second end of the bottom plate 701). Thus, the upper surface (i.e., the inclined surface) of the scraper 705 of the present disclosure can be arranged substantially parallel to the lower surface of the cleaning element 652. Correspondingly, the scraper 705 can have a preset interference depth with the cleaning element 652, and this interference depth is substantially the same along the radial direction of the cleaning element 652.

[0228] The inside of the liquid storage portion 704 of the present disclosure has a liquid storage space. A through hole is provided on the side wall of the liquid storage portion 704, and the liquid storage space can be communicated with the liquid storage tank through the through hole. That is to say, the solid-liquid mixture such as dirt and cleaning liquid of the present disclosure can flow into the liquid storage space under the action of gravity or under the action of negative pressure adsorption, and be recovered into the recovery tank 400 via the liquid storage space.

[0229] In a preferred embodiment, one end of the squeegee 705 is connected to the liquid storage part 704, and through holes are provided on both sides of the squeegee 705. Accordingly, the solid-liquid mixtures on both sides of the squeegee 705 can flow into the liquid storage space.

[0230] Accordingly, one end of the suction head 710 can be inserted into the liquid storage space of the scraping assembly 700, so as to discharge the solid-liquid mixture or the liquid in the solid-liquid mixture in the liquid storage space to the suction nozzle 640 or the recovery pipeline 401.

[0231] In the present disclosure, a preset distance is provided between one end of the suction head 710 and the bottom wall of the liquid storage space (i.e., the upper surface of the bottom plate 701), so that the solids in the solid-liquid mixture can be located below the suction head 710. Accordingly, the solids in the solid-liquid mixture will not affect the normal operation of the filter net 711.

[0232] In the present disclosure, a stepped part 707 is provided inside the liquid storage part 704. One end of the suction head 710 can contact the stepped part 707 and its position is restricted by the stepped part 707. Accordingly, the filter net 711 of the present disclosure can also be restricted in position by the stepped part 707. At this time, through the setting of the stepped part 707, the filter net 711 can be effectively prevented from detaching from the suction head 710.

[0233] Moreover, the baffle member 706 of the present disclosure is not suitable to be set too high. Specifically, when the cleaning head assembly 650 is in the working state, that is, when the cleaning head assembly 650 is in the lowered position, the baffle member 706 is set not to contact the lower surface of the cleaning head assembly 650. At this time, only the lower surface of the cleaning head assembly 650 (such as the cleaning element 652 of the cleaning head assembly 650) contacts the squeegee 705. Accordingly, only the squeegee 705 is used to scrape off the dirt and cleaning liquid of the cleaning head assembly 650, and the dirt and cleaning liquid are collected by the scraping assembly 700. Accordingly, since other components do not interfere with the cleaning head assembly 650, the dirt and cleaning liquid of the cleaning head assembly 650 can be prevented from falling onto the surface to be cleaned.

[0234] In some embodiments, the water spray head 682 can be located directly above the scraping assembly 700. For example, the water spray head 682 can be directly above the scraper 705. On the one hand, due to the rotation of the cleaning head assembly 650 and the fact that it takes some time for the cleaning liquid provided by the water spray head 682 to infiltrate the cleaning head assembly 650, the scraper 705 will not scrape off the newly added cleaning liquid but mainly remove the used cleaning liquid. On the other hand, when the scraper 705 removes the used cleaning liquid, the cleaning element 652 of the cleaning head assembly 650 is in a substantially dry state and needs to be replenished with cleaning liquid. At this time, the cleaning element 652 will have better water absorption ability, thus accelerating the infiltration of the cleaning liquid into the cleaning element 652. Additionally, since the cleaning head assembly 650 in contact with the scraper 705 needs to travel a relatively large circumferential distance before it can contact the surface to be cleaned, during this period, the cleaning element 652 of the cleaning head assembly 650 can be effectively infiltrated by the cleaning liquid, thereby improving the cleaning effect of the cleaning head assembly 650 on the surface to be cleaned.

[0235] In the present disclosure, at least a part of the scraping assembly 700 can be inserted into the base portion 610 of the floor brush assembly 600 and can be fixed to the base portion 610 of the floor brush assembly 600.

[0236] Specifically, the bottom wall of the base portion 610 of the present disclosure is recessed upward to form a receiving groove. The upper ends of the first side plate 702, the second side plate 703, and the liquid storage portion 704 of the scraping assembly 700 can be inserted into the receiving groove. Correspondingly, components such as the bottom plate 701 of the scraping assembly 700 can be located outside the receiving groove.

[0237] Figure 26 It is a schematic structural diagram of a floor brush assembly from an angle according to an embodiment of the present disclosure. Figure 27 is Figure 26 an enlarged structural diagram. Figure 28 It is a schematic structural diagram of a floor brush assembly from another angle according to an embodiment of the present disclosure. Figure 29 is Figure 28 an enlarged view of part C.

[0238] As Figures 26 to 29 shown, in the present disclosure, the receiving groove is formed by the first side wall 612, the second side wall 613, the rear wall 614, etc. Specifically, the first side wall 612 and the second side wall 613 are oppositely arranged, and the rear wall 614 is connected to one end of the first side wall 612 and the second side wall 613 respectively. When the scraping assembly 700 is inserted into the receiving groove, the first side plate 702 can be close to and cooperate with the first side wall 612. Correspondingly, the second side wall 613 can be close to and cooperate with the second side plate 703, so that the scraping assembly 700 can be fixed by the base portion 610.

[0239] More preferably, a fixing element 615 is provided on the base portion 610. The fixing element 615 can slide along the base portion 610 and has an open position and a closed position. When the fixing element 615 is in the closed position, at least a part of the fixing element 615 can be located in the receiving groove. For example, one end of the fixing element 615 can pass through the rear wall 614 and be located in the receiving groove. When the fixing element 615 is in the open position, the part of the fixing element 615 located in the receiving groove will move out of the receiving groove, so that the scraping assembly 700 can be detached from the base portion 610.

[0240] On the other hand, a clamping groove 708 is formed on the liquid storage portion 704 of the scraping assembly 700. The clamping groove 708 can cooperate with the fixing element 615 so that when at least a part of the scraping assembly 700 is located in the receiving groove, one end of the fixing element 615 can be inserted into the clamping groove 708, thereby fixing the scraping assembly 700 to the base portion 610 through the fixing element 615.

[0241] In the present disclosure, the fixing element 615 can be moved from the closed position to the open position by operating a protrusion on the fixing element 615. At the same time, the fixing element 615 can be moved from the open position to the closed position by the restoring force of the spring. More preferably, the movement of the fixing element 615 can be guided by a guiding structure provided on the base portion 610.

[0242] Moreover, the upper surface of the end of the fixing element 615 located in the clamping groove 708 is set as a substantially horizontal surface. Correspondingly, the upper surface of the clamping groove 708 is also set as a substantially horizontal surface, so that the fixing element 615 can be clamped and matched with the clamping groove 708 to realize the position limitation of the scraping assembly 700. In addition, the lower surface of the end of the fixing element 615 located in the clamping groove 708 is set as an inclined surface. Correspondingly, when the scraping assembly 700 is installed on the base portion 610, it is not necessary to manually operate the fixing element 615, but through the cooperation between the scraping assembly 700 and the inclined surface of the fixing element 615, the fixing element 615 is pushed from the closed position to the open position. Thus, the installation of the scraping assembly 700 is facilitated. Then, when the scraping assembly 700 is further pushed and installed to a preset position, the fixing element 615 can move from the open position to the closed position under the action of the restoring force of the spring. Correspondingly, one end of the fixing element 615 can be inserted into the clamping groove 708, thereby realizing the position limitation of the scraping assembly 700.

[0243] In a preferred embodiment, a stop member can be provided on the base portion 610. The stop member can limit the fixing element 615 in the closed position. Thus, through the setting of the stop member, the fixing element 615 can be prevented from separating from the base portion 610.

[0244] As Figure 29 shown, guiding structures 612A are provided on both the first side wall 612 and the second side wall 613 of the present disclosure. Specifically, taking the first side wall 612 as an example, the guiding structure 612A can be a guiding protrusion. Correspondingly, a guiding groove 702C is formed on the first side plate 702. By the cooperation of the guiding protrusion and the guiding groove, when the scraping assembly 700 is installed on the base portion 610 or disassembled from the base portion 610, it can be guided, thus facilitating the installation and disassembly of the scraping assembly 700. Preferably, the guiding groove 702C is formed on the first part 702A of the first side plate 702.

[0245] In addition, an elastic fixing member 702D is further provided on the first side plate 702, and a clamping hole 612B is further provided on the first side wall 612. When the scraping assembly 700 is fixed on the base portion 610, the elastic fixing member 702D can be located within the clamping hole 612B. That is to say, the elastic fixing member 702D of the present disclosure can generate a certain elastic deformation. During the installation process of the scraping assembly 700, the elastic fixing member 702D is compressed and moves towards the inside of the scraping assembly 700. When the scraping assembly 700 is installed in a preset position, the elastic fixing member 702D returns to its initial position, so that the elastic fixing member 702D can be clamped into the clamping hole 612B, thereby realizing the auxiliary positioning of the scraping assembly 700. Preferably, the elastic fixing member 702D is formed on the first part 702A of the first side plate 702.

[0246] Generally speaking, through the combined action of the elastic fixing member 702D and the fixing element 615, the scraping assembly 700 can be firmly fixed on the base portion 610.

[0247] Figure 30 is a schematic structural view of the floor brush assembly 600 according to an embodiment of the present disclosure from an angle.

[0248] As Figure 30 shown, the cover portion 620 of the present disclosure has an upper surface; wherein, a chamber portion 621 protruding from the upper surface of the cover portion 620 is provided on the cover portion 620, and the chamber portion 621 is used to accommodate the first motor 660; the upper end surface of the chamber portion 621 is equal to or lower than the highest point of the upper surface of the cover portion 620.

[0249] That is to say, the highest point on the upper surface of the remaining part of the cover part 620 of the present disclosure after removing the chamber part 621 is formed as the highest point of the entire brush assembly 600. At this time, the upper end surface of the chamber part 621 can be planar, and when the surface cleaning device is placed on a substantially horizontal surface to be cleaned, the upper end surface of the chamber part 621 is also substantially horizontal, that is, located in a certain horizontal plane; correspondingly, the upper end surface of the chamber part 621 is not formed as the highest point of the entire brush assembly 600, or the upper end surface of the chamber part 621 and the highest point on the upper surface of the remaining part of the cover part 620 after removing the cover part 620 together form the highest point of the entire brush assembly 600. In other words, there may be a height difference M1 between the highest point on the upper surface of the remaining part of the cover part 620 after removing the chamber part 621 and the upper end surface of the chamber part 621, and this height difference M1 is greater than or equal to 0.

[0250] In addition, when the surface cleaning device is in a lying flat state, the highest point on the upper surface of the cover part 620 of the brush assembly 600 (that is, the highest point on the upper surface of the remaining part of the cover part 620 after removing the chamber part 621) is formed as the highest point of the entire surface cleaning device.

[0251] More preferably, the connecting part 500 and the brush assembly 600 are pivotally connected. Specifically, the connecting part 500 is rotatably connected to the housing assembly of the brush assembly 600, and the pivot axis between the connecting part 500 and the housing assembly of the brush assembly 600 is a horizontal straight line, and this horizontal straight line is perpendicular to the front-rear direction of the brush assembly 600.

[0252] In a preferred embodiment, the upper end surface of the chamber part 621 is higher than a partial area of the upper surface of the cover part 620, thereby facilitating the layout of the positions of the first motor 660 and the valve device 681. Specifically, components such as the first motor 660 and the valve device 681 of the present disclosure can be vertically arranged, so that the positions of the components of the brush assembly 600 of the present disclosure are more reasonably distributed.

[0253] That is to say, the chamber part 621 of the present disclosure can not only accommodate a part of the first motor 660, but also accommodate a part of the valve device 681, so that the valve device 681 can be arranged substantially vertically.

[0254] Figure 31 It is a schematic structural diagram of the brush assembly 600 from another angle according to an embodiment of the present disclosure.

[0255] As Figure 31As shown, the cleaning head assembly 650 of the present disclosure can be set such that, in the lowered position, the inner side of the portion of the cleaning head assembly 650 in contact with the surface to be cleaned is closer to the inside of the base portion 610 than the outer side of the contact surface of the agitator 630 with the surface to be cleaned. Thus, when the surface cleaning device of the present disclosure is cleaning the surface to be cleaned and the floor brush assembly 600 is controlled to move forward, there will be no area that is missed during cleaning within the cleaning width range of the floor brush assembly 600.

[0256] In a preferred embodiment, the agitator 630 can include a cleaning member, which can be made of an object such as flannelette and is formed in a cylindrical shape or a belt shape. Thus, along the axial direction of the cleaning member, the cleaning member includes a first end and a second end. Correspondingly, the first end of the cleaning member is adjacent to one side wall of the floor brush assembly 600, the second end of the cleaning member is adjacent to the other side wall of the floor brush assembly 600, and there is a first edge distance D1 between the first end of the cleaning member and one side wall of the floor brush assembly 600.

[0257] In addition, when the cleaning head assembly 650 is in the lowered position, at least a part of the cleaning element 652 is in contact with the surface to be cleaned, and a working surface is formed through the contact part of the cleaning element 652 with the surface to be cleaned; at least a part of the working surface is within the horizontal plane projection of the housing assembly; wherein, there is a second edge distance D2 between the part of the working surface within the horizontal plane projection of the housing assembly where the floor brush assembly 600 is located and one side wall of the floor brush assembly 600; wherein, the second edge distance D2 is greater than the first edge distance D1; thus, there is an overlapping cleaning area between the cleaning head assembly 650 and the agitator 630, effectively preventing the occurrence of missed cleaning areas.

[0258] In a preferred embodiment, the cleaning element 652 is in a circular ring shape, and a second edge distance D2 is formed between the inner circle of the circular ring-shaped cleaning element 652 and one side wall of the floor brush assembly 600.

[0259] According to another aspect of the present disclosure, there is also provided a control method for a surface cleaning device, and the surface cleaning device can be the surface cleaning device of the above embodiment.

[0260] Wherein, the control method for the surface cleaning device can include: obtaining usage data generated by the first sensor assembly 690 indicating that the surface cleaning device is approaching a wall; and according to the usage data generated by the first sensor assembly 690, turning on and off the power supply to the first motor 660; increasing and decreasing the output power of the first motor 660; and / or, increasing and decreasing the rotational speed of the first motor 660.

[0261] In addition, the control method of the surface cleaning device of the present disclosure may further include: turning on and off the power supply to the electric suction source according to the usage data generated by the first sensor assembly 690; and / or increasing and decreasing the suction power of the electric suction source.

[0262] In a preferred embodiment, the control method of the surface cleaning device of the present disclosure may further include: obtaining the amount of the cleaning liquid in the supply tank 300; obtaining the usage amount of the cleaning liquid during one operation cycle of the first motor 660 according to the change in the amount of the cleaning liquid in the supply tank 300; when the usage amount of the cleaning liquid during each operation cycle of the first motor 660 is excessive, reducing the power of the liquid dispenser; and / or when the usage amount of the cleaning liquid during each operation cycle of the first motor 660 is too small, increasing the power of the liquid dispenser.

[0263] In addition, when the usage amount of the cleaning liquid during each operation cycle of the first motor 660 is excessive, controlling the solenoid valve and stopping supplying the cleaning liquid to the cleaning head assembly 650; and / or when the usage amount of the cleaning liquid during each operation cycle of the first motor 660 is too small, controlling the solenoid valve and turning on the supply of the cleaning liquid to the cleaning head assembly 650.

[0264] In some embodiments, obtain the usage data of the first motor 660, and obtain a notice for maintaining the cleaning head assembly 650 according to the usage data of the first motor 660; specifically, the usage data of the first motor 660 includes the current flowing through the first motor 660; the notice for maintaining the cleaning head assembly 650 includes one of the following: the cleaning head assembly 650 is wrapped; the cleaning head assembly 650 rotates and jams; the cleaning head assembly 650 moves and jams. That is to say, when the current flowing through the first motor 660 of the present disclosure is too large, a possible reason is that the first motor 660 is blocked, so it can be judged that the cleaning head assembly 650 is wrapped, the cleaning head assembly 650 rotates and jams, or the cleaning head assembly 650 moves and jams. Based on this notice, the user can maintain the cleaning head assembly 650.

[0265] In the present disclosure, a notice for maintaining the cleaning element 652 may also be obtained according to the usage data of the first motor 660. Specifically, the usage data of the first motor 660 includes the working time of the first motor 660; the need for maintaining the cleaning element 652 includes one of the following: the cleaning element 652 needs to be cleaned, and the cleaning element 652 needs to be replaced.

[0266] In a specific implementation form, according to the usage data generated by the first sensor component 690, the power supply to the first motor 660 is turned on and off, including: obtaining a first distance between the floor brush assembly 600 and the wall according to the usage data generated by the first sensor component 690; when the first distance is greater than a preset distance threshold, keeping the cleaning head assembly 650 in the raised position, or controlling the first motor 660 to act and causing the cleaning head assembly 650 to rise; when the first distance is less than or equal to the preset distance threshold, keeping the cleaning head assembly 650 in the lowered position, or controlling the first motor 660 to act and causing the cleaning head assembly 650 to descend. Thus, according to the usage data generated by the first sensor component 690, when it is determined that the surface cleaning device is against the wall, the cleaning head assembly 650 is controlled to be able to descend and perform floor cleaning; on the other hand, when it is determined that the surface cleaning device is not against the wall, the cleaning head assembly 650 is controlled to be able to rise.

[0267] According to another aspect of the present disclosure, there is provided another control method for a surface cleaning device, which may be the above-mentioned surface cleaning device. The surface cleaning device includes a normal cleaning mode and a side cleaning mode. In the normal cleaning mode, the cleaning head assembly 650 is in the raised position and the cleaning head assembly 650 does not contact the surface to be cleaned. Correspondingly, the first motor 660 is also in a non-operating state; in the side cleaning mode, the cleaning head assembly 650 is in the lowered position, and the cleaning head assembly 650 contacts the surface to be cleaned and cleans the surface to be cleaned.

[0268] The control method of the surface cleaning device includes: obtaining a power-on signal of the surface cleaning device and putting the surface cleaning device in a working state according to the power-on signal of the surface cleaning device; selectively applying a cleaning liquid to the cleaning head assembly 650 for a selected period of time to moisten the contact surface between the cleaning head assembly 650 and the surface to be cleaned; and stopping applying the cleaning liquid to the cleaning head assembly 650 after a selected period of time, wherein either or both of selectively applying the cleaning liquid or stopping applying the cleaning liquid are performed after the electric suction source of the surface cleaning device is started.

[0269] That is to say, in the control method of the surface cleaning device of the present disclosure, when the surface cleaning device is powered on, the cleaning liquid is provided to the cleaning head assembly 650, so that the cleaning head assembly 650 is fully moistened. Correspondingly, when the surface cleaning device approaches the wall and is in the side cleaning mode, the moistened cleaning head assembly 650 can immediately clean the wall edge, improving the cleaning efficiency of the surface cleaning device.

[0270] More specifically, either or both of selectively applying the cleaning liquid or stopping the application of the cleaning liquid are automatically controlled by the controller of the surface cleaning device, so that the surface cleaning device of the present disclosure has better automatic control ability and improves the user experience.

[0271] In the present disclosure, according to the magnitude relationship between the first distance and the preset distance threshold, it is confirmed whether the surface cleaning device is in the edge cleaning mode; specifically, when the first distance is less than or equal to the preset distance threshold, it is determined that the surface cleaning device is in the edge cleaning mode. In this edge cleaning mode, the working time of the edge cleaning mode, that is, the duration of the edge cleaning mode, is recorded; further, when the duration is greater than or equal to the preset time threshold, then after reaching the selected time, the application of the cleaning liquid to the cleaning head assembly 650 is not stopped. Thus, when the surface cleaning device is in the edge cleaning mode from the start-up, it can always be in the edge cleaning mode, and the cleaning head assembly 650 is applied with the cleaning liquid until the edge cleaning mode ends.

[0272] In the present disclosure, either or both of selectively applying the cleaning liquid or stopping the application of the cleaning liquid are controlled by the user through the user interaction button (trigger). Thus, the user can control the application or stop of the cleaning liquid according to the dirt degree of the surface to be cleaned, etc., so as not to waste the cleaning liquid and improve the usage duration of the cleaning liquid of the surface cleaning device.

[0273] In some embodiments, during the process of applying the cleaning liquid to the cleaning head assembly 650, the cleaning head assembly 650 keeps rotating, so that the entire cleaning head assembly 650 can be evenly wetted. Correspondingly, when the cleaning head assembly 650 contacts the surface to be cleaned and cleans the surface to be cleaned, it can perform uniform wet cleaning on the surface to be cleaned, preventing the situation where some parts of the surface to be cleaned have water stains while some parts of the surface to be cleaned are not provided with the cleaning liquid.

[0274] After the cleaning liquid is applied to the cleaning head assembly 650, the user is prompted that the cleaning head assembly 650 has been applied with the cleaning liquid. Thus, the user can accurately know the state of the cleaning head assembly 650, and will not send incorrect instructions to the surface cleaning device.

[0275] In a preferred embodiment, a selected period of time is greater than or equal to 5 s and less than or equal to 10 s; on the one hand, within this time, the cleaning head assembly 650 can be sufficiently wetted; on the other hand, this time will not overly affect the user's use of the surface cleaning device.

[0276] In the present disclosure, when selectively stopping applying the cleaning liquid to the cleaning head assembly 650, the cleaning liquid is kept applied to the agitator 630. Thus, the agitator 630 can be used to clean the surface to be cleaned. At this time, the surface cleaning device is not in the edge cleaning mode but in the normal cleaning mode.

[0277] In a preferred embodiment, when selectively applying the cleaning liquid, the cleaning head assembly 650 is in the raised position. At this time, the on / off of the solenoid valve can be controlled to supply the cleaning liquid to the cleaning head assembly 650. As analyzed above, when the cleaning head assembly 650 is in the raised position, the first motor 660 can drive the cleaning head assembly 650 to rotate through the actuating assembly without causing the cleaning head assembly 650 to descend.

[0278] In another embodiment, when selectively applying the cleaning liquid, the cleaning head assembly 650 is in the lowered position. After stopping applying the cleaning liquid, the cleaning head assembly 650 moves from the lowered position to the raised position. At this time, the cleaning liquid can be supplied to the cleaning head assembly 650 through the above-mentioned valve device 681. At this time, the lifting of the cleaning head assembly 650 can be accompanied by the opening or closing of the valve device 681, so that the cleaning head assembly 650 is effectively wetted and then moves to the raised position, and at this raised position, it waits for the surface cleaning device to enter the edge cleaning mode.

[0279] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0280] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0281] Those skilled in the art should understand that the above embodiments are merely for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or variations can be made based on the above disclosure, and these changes or variations are still within the scope of the present disclosure.

Claims

1. A surface cleaning device, characterized in that: include: an electric suction source, the electric suction source comprising a vacuum motor and the electric suction source being used to generate a vacuum; a supply tank for storing a cleaning liquid; a recovery tank, the recovery tank being used to be connected to the electric suction source, and the vacuum generated by the electric suction source being able to be applied to the recovery tank; as well as A floor brush assembly, wherein the floor brush assembly is used to clean the surface to be cleaned; Wherein, the floor brush assembly comprises: a housing assembly defining a receiving chamber; an agitator, the agitator being arranged in the containing chamber; the cleaning liquid stored in the supply tank is distributed to the agitator via the liquid distributor, so that the surface to be cleaned is wet cleaned by the rotation of the agitator, and the wastewater after cleaning the surface to be cleaned is recovered and stored in the recovery tank; a cleaning head assembly driven to move between a raised position and a lowered position; the cleaning head assembly being further away from the surface to be cleaned in the raised position than in the lowered position; A first motor, the first motor is used to drive the cleaning head assembly to generate lifting motion and / or rotation; and a first sensor assembly configured to generate at least usage data indicative of proximity of the surface cleaning device to a wall; The surface cleaning device further includes a controller, which is configured to process usage data generated by the first sensor component and transmit a control signal based on the usage data generated by the first sensor component, wherein the control signal is at least configured to: turn on and off the power supply to the first motor; increase and decrease the output power of the first motor; and / or increase and decrease the rotation speed of the first motor.

2. The surface cleaning device according to claim 1, characterized in that The control signal is further configured to: turn on and off the power supply to the electric suction source; and / or increase and decrease the suction power of the electric suction source.

3. The surface cleaning device according to claim 1, characterized in that The controller is also used to obtain the amount of cleaning liquid in the supply tank before the operation cycle of the first motor; when the first motor is running and the cleaning head assembly is located in the lowered position, the cleaning liquid in the supply tank is provided to the cleaning head assembly via the liquid distributor.

4. The surface cleaning device according to claim 3, characterized in that The controller controls the liquid dispenser and reduces the power of the liquid dispenser when the amount of cleaning liquid used is too much during the operation cycle of the first motor each time; and / or increases the power of the liquid dispenser when the amount of cleaning liquid used is too little during the operation cycle of the first motor each time.

5. The surface cleaning device according to claim 1, characterized in that Also includes: A solenoid valve, the solenoid valve is used to start or stop supplying cleaning liquid to the cleaning head assembly; wherein the controller is configured to control the solenoid valve and stop supplying cleaning liquid to the cleaning head assembly when the amount of cleaning liquid used during the operation cycle of the first motor is too much; and / or start supplying cleaning liquid to the cleaning head assembly when the amount of cleaning liquid used during the operation cycle of the first motor is too little.

6. The surface cleaning device according to claim 1, characterized in that The controller is used to process the usage data of the first motor and obtain a notification that the cleaning head assembly needs to be maintained according to the usage data of the first motor.

7. The surface cleaning device according to claim 6, characterized in that Also includes: a current sensor, the current sensor being used to detect a current flowing through the first motor; The controller obtains a notification that maintenance of the cleaning head assembly is required based on the current data of the first motor detected by the current sensor.

8. A surface cleaning device according to claim 6 or 7, characterized in that The notification that the cleaning head assembly needs to be maintained includes one of the following: the cleaning head assembly is entangled; the cleaning head assembly is stuck in rotation; and the cleaning head assembly is stuck in movement.

9. The surface cleaning device according to claim 1, characterized in that The controller processes usage data of the first motor and obtains a notification that cleaning element maintenance is required based on the usage data of the first motor.

10. The surface cleaning device according to claim 9, characterized in that The controller processes the usage data of the first motor, obtains the working time of the first motor, and obtains a notification that the cleaning element maintenance is required according to the working time of the first motor.

11. A surface cleaning device according to claim 9 or 10, characterised in that The need to perform cleaning element maintenance includes one of the following: the cleaning element needs to be cleaned, and the cleaning element needs to be replaced.

12. The surface cleaning device of claim 1, wherein: The first sensor assembly is located on the side wall on the right side of the forward direction of the floor brush assembly.

13. The surface cleaning device according to claim 12, characterized in that The first sensor assembly includes a proximity sensor, which is used to detect a first distance between a side wall of the floor brush assembly and a wall.

14. The surface cleaning device according to claim 13, characterized in that When the first distance is greater than a preset distance threshold, the cleaning head assembly is maintained in a raised position, or the first motor is controlled to move and raise the cleaning head assembly; when the first distance is less than or equal to the preset distance threshold, the cleaning head assembly is maintained in a lowered position, or the first motor is controlled to move and lower the cleaning head assembly.

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