Surface cleaning apparatus

Abstract

The utility model provides surface cleaning equipment. The surface cleaning equipment comprises a main body part, an electric suction source, a supply tank, a recovery tank and a ground brush assembly, the floor brush assembly comprises a shell assembly, a stirrer, a cleaning head assembly and a first motor. The first motor is used for driving the cleaning head assembly to generate lifting motion and / or rotation; the first motor is provided with a rotating axis, and when the surface cleaning equipment is located on the approximately horizontal surface to be cleaned, the rotating axis of the first motor inclines towards the outer side of the floor brush assembly in the direction from bottom to top.

Description

Technical Field

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

[0002] Wet surface cleaning equipment refers to cleaning equipment suitable for cleaning various hard surfaces in home or office environments.

[0003] Conventional floor cleaners clean the floor with a high flow of cleaning liquid in such a way that the floor to be cleaned is completely wetted. By wetting the hard floor surface, the cleaning head transfers dust from the floor into the cleaning liquid, which is then removed from the hard floor surface and retained in a recovery storage as contaminated cleaning liquid.

[0004] Wet surface cleaning equipment generally comprises: a cleaning solution storage unit for containing a cleaning solution; a recovery storage unit for recovering pollutants recovered from the cleaned floor; a motor-driven vacuum source to form a vacuum flow path from the cleaned floor to the recovery storage unit; a floor brush assembly capable of moving over and cleaning the surface to be cleaned; a rechargeable battery to provide energy to each component; and a base station for charging and post-cleaning maintenance of the wet surface cleaning equipment.

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

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

[0007] In order 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 comprising:

[0009] Main body;

[0010] an electric suction source, the electric suction source comprising a vacuum motor and the electric suction source being used to generate a vacuum;

[0011] A supply tank, the supply tank is disposed on the main body and is used to store cleaning liquid;

[0012] a recovery tank, the recovery tank being adapted to be connected to the electric suction source, the vacuum generated by the electric suction source being capable of being applied to the recovery tank; and

[0013] A floor brush assembly, the floor brush assembly is pivotally connected to the main body, and the surface to be cleaned is cleaned by the floor brush assembly;

[0014] Wherein, the floor brush assembly comprises:

[0015] a housing assembly defining a receiving chamber;

[0016] 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;

[0017] 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; and in the lowered position, the working range of the cleaning head assembly is outside the horizontal plane projection of the housing assembly; and

[0018] A first motor, the first motor is used to drive the cleaning head assembly to generate lifting motion and / or rotation;

[0019] Wherein, the first motor has a rotation axis, and when the surface cleaning device is located on a substantially horizontal surface to be cleaned, the rotation axis of the first motor is inclined toward the outside of the floor brush assembly in a bottom-up direction.

[0020] According to at least one embodiment of the surface cleaning device of the present disclosure, the cleaning head assembly includes a cleaning disc and a cleaning element, the cleaning disc is detachably connected to the actuating assembly, and the cleaning element is connected to the cleaning disc; when the surface cleaning device is located on the surface to be cleaned, a first angle is provided between the cleaning element and the surface to be cleaned, and the angle of the first angle is greater than 0°.

[0021] According to a surface cleaning device of at least one embodiment of the present disclosure, the cleaning head assembly includes a cleaning disc and a cleaning element, wherein the cleaning disc is detachably connected to an actuating assembly, and the cleaning element is connected to the cleaning disc; when the surface cleaning device is located on a surface to be cleaned, a portion of the cleaning element contacts the surface to be cleaned.

[0022] In the surface cleaning device according to at least one embodiment of the present disclosure, the cleaning element has a circular contour, and a portion of the cleaning element includes at least an outer edge of the circular contour.

[0023] In the surface cleaning device according to at least one embodiment of the present disclosure, a rotation axis of the cleaning disc does not coincide with a rotation axis of the first motor.

[0024] In the surface cleaning device according to at least one embodiment of the present disclosure, a rotation axis of the first motor is parallel or substantially parallel to a rotation axis of the cleaning head assembly.

[0025] In the surface cleaning device according to at least one embodiment of the present disclosure, the rotation axis of the cleaning disc is farther away from the middle of the floor brush assembly than the rotation axis of the first motor.

[0026] In the surface cleaning device according to at least one embodiment of the present disclosure, the first motor is used to drive the actuating assembly to lift and / or rotate; and enables the actuating assembly to move between a first position and a second position so that the actuating assembly changes height relative to the bottom surface of the housing assembly; wherein, when the actuating assembly is located in the first position, the actuating assembly drives the cleaning head assembly and causes the cleaning head assembly to be located in a raised position; and when the actuating assembly is located in the second position, the actuating assembly drives the cleaning head assembly and causes the cleaning head assembly to be located in a lowered position.

[0027] According to the surface cleaning device of at least one embodiment of the present disclosure, when the actuating assembly is located at the second position, the actuating assembly can be driven by the first motor to rotate, and the actuating assembly drives the cleaning head assembly to rotate.

[0028] According to at least one embodiment of the surface cleaning device of the present disclosure, the actuation assembly comprises:

[0029] a first bracket, wherein the first bracket can receive a driving force of the first motor and generate rotation; and

[0030] The second bracket cooperates with the first bracket so that when the second bracket is in the second position and the first bracket rotates along the first direction, the first bracket drives the second bracket to rotate; when the second bracket is in the second position and the first bracket rotates along the second direction, the first bracket drives the second bracket to move from the second position to the first position.

[0031] According to the surface cleaning device of at least one embodiment of the present disclosure, a protrusion is provided on the outer circumference of the first bracket; a spiral groove is formed on the inner circumference of the second bracket, the protrusion is arranged in the spiral groove and can slide along the spiral groove to make the first bracket and the second bracket cooperate.

[0032] According to at least one embodiment of the surface cleaning device of the present disclosure, the actuating assembly further comprises:

[0033] A limiting element is provided on the second bracket and is used to limit the relative movement between the first bracket and the second bracket.

[0034] In the surface cleaning device according to at least one embodiment of the present disclosure, at least a portion of the limiting element is used to limit the position of the protrusion of the first bracket.

[0035] In the surface cleaning device according to at least one embodiment of the present disclosure, the actuating assembly further comprises: a damping element, which is fixed to the housing assembly and located outside the second bracket so that the damping element can apply preset damping to the second bracket; wherein the damping applied by the damping element to the second bracket needs to satisfy the requirement that the second bracket does not rotate during the process of rising or falling, or even if the second bracket rotates during the process of rising or falling, the rotation speed of the second bracket is lower than that of the first bracket.

[0036] According to at least one embodiment of the surface cleaning device of the present disclosure, the damping element comprises:

[0037] a base, with a notch formed on a side wall of the base; and

[0038] A damping portion is disposed in the notch and is used to apply damping to the second bracket.

[0039] According to the surface cleaning device of at least one embodiment of the present disclosure, both ends of the damping portion are connected to the side walls of the notch through elastic members. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0041] Figure 1 A schematic diagram of a surface cleaning system according to one aspect of the present disclosure is shown.

[0042] Figure 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure.

[0043] Figure 3 It is a schematic structural diagram of a floor brush assembly according to one embodiment of the present disclosure.

[0044] Figure 4 It is a structural schematic diagram of a floor brush assembly from another angle according to an embodiment of the present disclosure.

[0045] Figure 5 It is a partial structural schematic diagram of a floor brush assembly according to one embodiment of the present disclosure.

[0046] Figure 6 It is a schematic diagram of the internal structure of a floor brush assembly according to one embodiment of the present disclosure.

[0047] Figure 7 is a schematic structural diagram of a first motor and an actuating assembly according to one embodiment of the present disclosure.

[0048] Figure 8 is a schematic diagram of the exploded structure of a first motor and an actuating assembly according to one embodiment of the present disclosure.

[0049] Fig. 9 is a schematic diagram of the exploded structure of an actuating assembly according to one embodiment of the present disclosure.

[0050] Fig.10 is a schematic structural diagram of an actuating assembly according to one embodiment of the present disclosure.

[0051] Fig.11 is a schematic structural diagram of a damping element according to an embodiment of the present disclosure.

[0052] Fig.12 It is a schematic structural diagram of an avoidance portion according to an embodiment of the present disclosure.

[0053] Fig.13 It is a schematic structural diagram of an avoidance portion according to another embodiment of the present disclosure.

[0054] Fig.14 It is a schematic structural diagram of a cleaning head assembly according to one embodiment of the present disclosure.

[0055] Fig.15 is a schematic structural diagram of a liquid supply assembly according to one embodiment of the present disclosure.

[0056] Fig.16 is a schematic diagram of a liquid supply assembly according to one embodiment of the present disclosure.

[0057] Fig.17 is a schematic structural diagram of a valve stem and a valve cover according to an embodiment of the present disclosure.

[0058] Fig.18 It is a schematic cross-sectional structural diagram of a valve component according to one embodiment of the present disclosure.

[0059] Fig.19 is a schematic structural diagram of a first sensor assembly according to an embodiment of the present disclosure.

[0060] Fig. 20 yes Fig.19 Schematic diagram of enlarged portion A.

[0061] Fig.21 It is a schematic structural diagram of a scraping assembly and a suction head according to one embodiment of the present disclosure.

[0062] Fig. 22 It is a schematic structural diagram of a scraping assembly and a suction head at another angle according to an embodiment of the present disclosure.

[0063] Fig.23 It is a schematic structural diagram of a scraping assembly according to one embodiment of the present disclosure.

[0064] Fig.24 It is a schematic structural diagram of a scraping assembly from another angle according to an embodiment of the present disclosure.

[0065] Fig.25 It is a schematic structural diagram of a suction head according to one embodiment of the present disclosure.

[0066] Fig.26 It is a structural schematic diagram of a floor brush assembly at an angle according to an embodiment of the present disclosure.

[0067] Fig. 27 yes Fig.26 Schematic diagram of the enlarged structure.

[0068] Fig.28 It is a structural schematic diagram of a floor brush assembly from another angle according to an embodiment of the present disclosure.

[0069] Fig.29 yes Fig.28 Enlarged schematic diagram of part C of FIG.

[0070] Fig.30 It is a structural schematic diagram of a floor brush assembly at an angle according to an embodiment of the present disclosure.

[0071] Fig.31 It is a structural schematic diagram of a floor brush assembly from another angle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0072] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0073] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0074] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0075] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0076] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0077] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0078] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0079] Figure 1 A schematic diagram of a surface cleaning system according to one aspect of the present disclosure is shown.

[0080] like Figure 1 As shown, the present disclosure provides a surface cleaning system, which includes a surface cleaning device and a base station 900 .

[0081] The surface cleaning device is configured to clean a surface to be cleaned (e.g., a floor surface, etc.). Preferably, the surface cleaning device can wet clean the surface to be cleaned, i.e., is formed as a wet surface cleaning device, and the liquid after cleaning the surface to be cleaned is recovered to the surface cleaning device. Unless otherwise specified in the present disclosure, the surface to be cleaned is arranged substantially horizontally, i.e., is formed as a horizontal plane.

[0082] The base station 900 is configured for docking of a surface cleaning device and is capable of providing electrical energy to the surface cleaning device to charge a rechargeable battery of the surface cleaning device.

[0083] Although the surface cleaning device of the present disclosure is shown in the form of a floor scrubber, those skilled in the art will appreciate that the term "surface cleaning device" may 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 scrubbers, vacuum cleaners with mopping functions, sweeping robots with scrubbing functions, window cleaning robots, and the like.

[0084] Refer to Figure 1In the present disclosure, the surface cleaning system is intended to support the surface cleaning device for cleaning and maintenance. In some examples, the surface cleaning device may be configured to perform a semi-autonomous or autonomous dirty 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 disposed on or inside the housing of the surface cleaning device. The controller may be connected to or integrated with a connecting component, and is configured to collect data from the sensor. In some examples, the surface cleaning device may identify the degree of dirtiness of the floor within a cleaning cycle through a sensor. This identification may be based on sensor information and the usage time of the agitator 630.

[0085] The controller may also be configured to transmit output signals to controlled components of the surface cleaning apparatus and execute a cleaning operation cycle. Examples of controlled components include an electric suction source, a motor driving the agitator 630, and the like.

[0086] The base station 900 may be configured to perform a self-cleaning cycle and a thermal drying cycle, whereby corresponding cleaning and maintenance operations are performed when the surface cleaning device is stored and supported on the base station 900 .

[0087] In some embodiments, various mechanisms and algorithms may be used to determine the maintenance mode of the agitator 630 of the surface cleaning device to adapt to the current working conditions. These working conditions may be defined by the user or may be identified by the surface cleaning device using occupancy data related to the environment, such as a record of the dirtiness of the floor to be cleaned. Automatic cleaning mode selection through these mechanisms and algorithms may reduce the power consumption of the surface cleaning device, thereby improving its operating efficiency.

[0088] like Figure 1 As 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 web server, an application server, a database server, a communication server, a home server, a mobile server, or any combination thereof.

[0089] For example, the surface cleaning device may upload data (e.g., notifications) to an application hosted by server 1200 for publishing data related to autonomous functions performed by the surface cleaning device. For example, a user may view data published by the surface cleaning device through an application running on remote control device 1300 to view the functions performed by the surface cleaning device. 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.

[0090] The database 1400 can store data, which may include location information, control instructions, consumables information (e.g., 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 operation of the surface cleaning device (e.g., the occupied time of the self-cleaning cycle, the occupied time of the hot drying cycle, the charging power of the base station 900 during the maintenance of the surface cleaning device, etc.). The surface cleaning device can retrieve the stored data from the database 1400 through the access point 1100.

[0091] In some cases, the surface cleaning device can 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.

[0092] 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. Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions. The wireless communication link 1500 may transmit bidirectional communications and / or unidirectional communications. The wireless communication link 1500 may include one or more connections, including but not limited to Wi-Fi, Bluetooth, point-to-point, LAN, wireless local area network (WLAN), Ethernet, fiber optics, and / or other connection types associated with wireless communication systems.

[0093] In some examples, environment 2000 can be part of a structure, such as a residential or commercial building. For example, environment 2000 can be a home, and in particular can be a room, including one or more different floor materials and objects throughout the room. The surface cleaning device can be configured to perform cleaning functions within the scope of the home. For example, the surface cleaning device can perform a semi-autonomous (or autonomous) surface dirt particle collection process within the above-mentioned geographic boundaries under the manual control of the user.

[0094] When the wet household surface cleaning device is working, the agitator 630 with liquid rotates at high speed and a large amount of dirt adheres to it. In order to avoid secondary pollution, the structural design needs to keep the agitator 630 self-cleaning in real time. Usually, the cover body 620 is used to shield and collect the dirt and liquid particles thrown out by the centrifugal force when the agitator 630 rotates at high speed, and a scraper bar that interferes with it is set in the receiving chamber to scrape off the dirt adhered to the surface of the agitator 630 in real time and suck it away through the suction nozzle 640. Due to the structural design reasons, the agitator 630 cannot be separated from the cover body and the receiving chamber and set independently. The wet household surface cleaning device will encounter difficult-to-reach cleaning areas during the cleaning operation, such as the junction of the ground and the wall. In order to ensure 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-mentioned design reasons, it is difficult for the agitator 630 itself to achieve the expected edge cleaning effect. Often when the shell of the surface cleaning device reaches the wall, the edge of the agitator 630 still has not reached the target cleaning area and cannot clean the target cleaning area.

[0095] Figure 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure.

[0096] like Figure 2 As shown, the surface cleaning device of the present disclosure is configured to perform wet cleaning on a surface to be cleaned, wherein the surface to be cleaned may 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, dirt and liquid (sewage) after cleaning the surface to be cleaned can be recovered to the surface cleaning device.

[0097] like Figure 2 As shown, the surface cleaning device may include components such as a handle portion 100 , a main body portion 200 , a supply tank 300 , a recovery tank 400 , a connection portion 500 , and a floor brush assembly 600 .

[0098] The handle portion 100 is detachably disposed on the main body portion 200 , and the user can operate the surface cleaning device by operating the handle portion 100 , and the main body portion 200 can be in an upright state (non-working state) and a tilted state (working state).

[0099] More preferably, a user interaction button can be provided on the handle portion 100, and the user can control the surface cleaning device by triggering the user interaction button, such as controlling the start and stop of the surface cleaning device, as well as controlling the liquid supply speed of the surface cleaning device and the suction power of the electric suction source, thereby providing a better user experience of the surface cleaning device.

[0100] In one example, the main body 200 is formed as the main body of the surface cleaning device; the main body 200 is pivotally connected to the floor brush assembly 600 through the connecting portion 500; and the main body 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 mounted to the side of the main body 200, and the sides where the two are mounted can be opposite sides of the main body 200. In another example, at least one of the supply tank 300 and the recovery tank 400 can also be detachably mounted to a part of the floor brush assembly 600.

[0101] In one example, the thickness of the supply tank 300 and the recovery tank 400 is set to be smaller than the width, which can ensure sufficient capacity and make the height of the main body 200 less than a predetermined height, such as 120 mm, when lying flat.

[0102] The supply tank 300 is flat in shape and includes a cavity formed by a plurality of walls to contain the cleaning liquid, and the capacity of the supply tank 300 may be set to 500 mL, etc. In addition, the supply tank 300 may include a handle through which the user may install or remove the supply tank 300.

[0103] The supply tank 300 is used to store the cleaning liquid to be distributed. Accordingly, 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 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 to be achieved by the cleaning liquid.

[0104] In a preferred embodiment, the liquid dispenser may include a liquid supply pump, which can draw cleaning liquid from the supply tank 300, pressurize the cleaning liquid, and provide it to the liquid outlet component, and provide the pressurized cleaning liquid to the agitator 630 of the floor brush assembly 600 or to the surface to be cleaned near the agitator 630 through the liquid outlet component.

[0105] 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 mixtures thereof, etc. In addition, the cleaning liquid can be a room temperature cleaning liquid or a high temperature cleaning liquid.

[0106] The main body 200 is formed with a accommodating space, and the recovery tank 400 is detachably arranged on the main body 200 and located in the accommodating space, so that when the liquid stored in the recovery tank 400 is large, the user can remove the recovery tank 400, pour out the sewage inside and clean up the solid garbage. At this time, part of the outer surface of the recovery tank 400 forms part of the outer surface of the surface cleaning device.

[0107] In order to recycle the liquid after cleaning the surface to be cleaned, the recovery tank 400 can be connected to the floor brush assembly 600 through the recovery pipeline 401, and accordingly, the mixture of dirt, sewage and gas (solid-liquid mixture) can be recycled 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 in the recovery tank 400.

[0108] In the present disclosure, the surface cleaning device also includes an electric suction source (not shown in the figure), which may include a vacuum motor, so that a vacuum (negative pressure) can be generated by the electric suction source. At the same time, the electric suction source can be connected to the recovery tank 400, so as 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 the partial outer surface of the surface cleaning device.

[0109] In one example, the connection portion 500 may include a universal joint so that the main body 200 can rotate relative to the floor brush assembly 600 in two directions.

[0110] In another example, the connection portion 500 may 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 the first direction and the second direction.

[0111] The main body 200 can be pivoted to an upright position (also referred to as a storage position) through the connection portion 500, in which the angle between the main body 200 and the surface (or the ground on which the floor brush assembly 600 is placed) is 80° to 90°, preferably about 80°. In this position, the surface cleaning device is in a self-supporting posture (also referred to as an upright posture), that is, the main body 200 can be supported by the floor brush assembly 600, and the upright posture can be achieved without the aid of other objects.

[0112] Figure 3 It is a schematic structural diagram of a floor brush assembly 600 according to an embodiment of the present disclosure. Figure 4 It is a structural schematic diagram of a floor brush assembly 600 from another angle according to an embodiment of the present disclosure. Figure 5 It is a partial structural schematic diagram of a floor brush assembly 600 according to one embodiment of the present disclosure. Figure 6 It is a schematic diagram of the internal structure of a floor brush assembly 600 according to an embodiment of the present disclosure.

[0113] like Figure 3 and Figure 4 As shown, the floor brush assembly 600 of the present disclosure may include: a base portion 610, a cover portion 620, an agitator 630, a suction nozzle 640, a cleaning head assembly 650 and other components.

[0114] The base portion 610 and the cover portion 620 of the present disclosure can form a housing assembly of the floor brush assembly 600 as a whole, and the housing assembly is pivotally connected to the main body 200 via the connecting portion 500. In addition, the housing assembly is configured to be suitable for moving on the floor surface to be cleaned. For example, two rolling wheels can be provided on the base portion 610 of the housing assembly, and the housing assembly can be moved on the surface to be cleaned by rolling the rolling wheels on the surface to be cleaned.

[0115] The housing assembly defines a receiving chamber, specifically, the receiving chamber is located at the front half of the floor brush assembly 600 (the front is the direction of movement of the surface cleaning device when cleaning the surface to be cleaned), so as to accommodate the first stirring member 630 in the receiving chamber, and accordingly, the first stirring member 630 is also located at the front half of the floor brush assembly 600. In a specific embodiment, the front surface of the base portion 610 and the lower surface of part of the cover portion 620 are both formed as at least part of the side wall of the receiving chamber; that is, the receiving chamber of the present disclosure is formed by the base portion 610 and the cover portion 620.

[0116] 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, thereby, the agitator 630 can be in frictional contact with the surface to be cleaned and achieve the cleaning of the surface to be cleaned. During the frictional contact between the agitator 630 and the surface to be cleaned, a cleaning liquid can be provided to the agitator 630, thereby achieving wet cleaning of the surface to be cleaned.

[0117] In one example, the agitator 630 of the floor brush assembly 600 may be a drum-type cleaning member; those skilled in the art should know that the floor brush assembly 600 may also be formed as a crawler-type cleaning device, etc. In this case, the agitator 630 of the floor brush assembly 600 may be a crawler-type cleaning member, etc. In the present disclosure, a drum-type cleaning member is used as an example for description.

[0118] In one embodiment, the motor may be disposed in the housing assembly and drive the agitator 630 to rotate by means of a synchronous belt drive (i.e., the agitator 630 is operably connected to the motor); in another embodiment, the motor may be disposed in the agitator 630 and be capable of driving the agitator 630 to rotate; in the present disclosure, the agitator 630 is capable of rotating along a first axis; more preferably, the first axis may be a horizontal straight line in a transverse direction, the transverse direction being a direction perpendicular to the front-to-back direction; the front-to-back direction is the direction of movement of the surface cleaning device when cleaning the surface to be cleaned.

[0119] The cover portion 620 is disposed on the base portion 610 and is configured to partially surround the agitator 630 , and the cover portion 620 can interfere with at least a portion of the outer surface of the agitator 630 to make the cleaning liquid on the agitator 630 more evenly distributed.

[0120] like Figure 5 and Figure 6 As 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.

[0121] like Figure 4 As 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 away from the surface to be cleaned in the raised position than in the lowered position; and, 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 is able to clean the area outside the projection of the housing assembly on the horizontal plane.

[0122] 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.

[0123] 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 .

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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 8 is a schematic diagram of the exploded structure of the first motor 660 and the actuating assembly according to one embodiment of the present disclosure.

[0129] like Figure 7 and Figure 8 As shown, the actuating assembly 670 of the present disclosure is driven to be able to move between a first position and a second position so that the actuating assembly 670 changes height relative to the bottom surface of the housing assembly; wherein, when the actuating assembly 670 is located in the first position, the actuating assembly 670 drives the cleaning head assembly 650 and causes the cleaning head assembly 650 to be located in a raised position; and when the actuating assembly 670 is located in the second position, the actuating assembly 670 drives the cleaning head assembly 650 and causes the cleaning head assembly 650 to be located in a lowered position.

[0130] Meanwhile, when the actuating assembly 670 is located at 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 located at the first position, the actuating assembly 670 can also be driven to rotate, and the actuating assembly 670 can drive the cleaning head assembly 650 to rotate. The rotation directions of the cleaning head assembly 650 in the raising direction and in the lowering direction are opposite.

[0131] Fig. 9 is a schematic diagram of the exploded structure of an actuating assembly according to one embodiment of the present disclosure.

[0132] In a specific embodiment, Fig. 9 As 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 .

[0133] Among them, the first bracket 671 is configured to receive the driving force of the first motor 660, that is, the first bracket 671 can be fixed to the output shaft of the first motor 660 or to the output shaft of the reducer, so that the position of the first bracket 671 in the height direction will not change. At the same time, the first bracket 671 can be driven and rotated by the first motor 660.

[0134] Specifically, the first bracket 671 of the present invention is cylindrical as a whole, and a non-circular hole connected to the output shaft of the first motor 660 or the output shaft of the reducer is provided at its upper end. In actual use, the output shaft of the first motor 660 or the output shaft of the reducer can be inserted into the non-circular hole, thereby realizing the transmission connection between the first motor 660 and the first bracket 671.

[0135] In addition, a protrusion 671A is provided on the outer peripheral surface of the first bracket 671 , and the protrusion 671A is provided close to the lower end of the first bracket 671 .

[0136] The second bracket 672 cooperates with the first bracket 671 so that when the second bracket 672 is in the second position and the first bracket 671 rotates along 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 along the second direction, the first bracket 671 drives the second bracket 672 to move from the second position to the first position.

[0137] Specifically, a spiral groove 672A is formed on the inner surface of the second bracket 672 , and the protrusion 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 are matched.

[0138] Specifically, if Figure 7As shown, at this time, the second bracket 672 is in the first position. At the first position, if the first bracket 671 is driven and rotates clockwise (from the top to the bottom, the same below), the protrusion 671A of the first bracket 671 will be limited by the limit block at the lower end of the spiral groove 672A of the second bracket 672, and the second bracket 672 and the first bracket 671 will rotate clockwise synchronously. At this time, although the cleaning head assembly 650 is not in contact with the surface to be cleaned, the cleaning liquid can be provided to the cleaning head assembly 650 when the cleaning head assembly 650 rotates, so that the cleaning head assembly 650 is wetted and is in a state capable of cleaning the surface to be cleaned.

[0139] At the first position, if the first bracket 671 is driven and rotates counterclockwise (from top to bottom, the same below), the protrusion 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 in the vertical direction remains unchanged, the second bracket 672 will be pushed and move downward. Next, when the second bracket 672 gradually descends and descends to the second position, the protrusion 671A will be restricted by the limiting element 673. At this time, the second bracket 672 will not descend further, but will rotate counterclockwise synchronously with the first bracket 671.

[0140] Since when the second bracket 672 is in the second position, at least a portion of the cleaning head assembly 650 will be in contact with the surface to be cleaned. Therefore, when the second bracket 672 rotates, the cleaning head assembly 650 can be driven and rotated by the second bracket 672, thereby achieving wet cleaning of the surface to be cleaned. In particular, the cleaning head assembly 650 can clean locations such as corners, thereby improving the cleaning effect of the surface cleaning equipment.

[0141] In the present disclosure, the limiting element 673 is disposed on the second bracket 672 to limit the relative movement between the first bracket 671 and the second bracket 672. That is, the limiting element 673 of the present disclosure can be fixed with the second bracket 672, and at least part of the limiting element 673 is used to limit the protrusion of the first bracket 671.

[0142] 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 stopper, and the stopper prevents the convex block 671A of the first bracket 671 from detaching from the lower end of the spiral groove 672A. In addition, 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 convex block 671A of the first bracket 671 will not detach from the upper end of the spiral groove 672A.

[0143] During the assembly of the actuating assembly, the protrusion of the first bracket 671 can be placed in the spiral groove 672A first, and then the limiting element 673 can be installed on the upper end of the second bracket 672 to achieve the installation of the actuating assembly, which is convenient for the installation process.

[0144] In a preferred embodiment, the second bracket 672 also includes an upwardly extending protrusion 672B, which can be inserted into the first bracket 671 from the lower end; thus, when the second bracket 672 is located in the first position, at least a portion of the protrusion 672B can be disposed inside the first bracket 671; at the same time, the cleaning head assembly 650 can be fixed to the protrusion 672B, that is, the upper end of the cleaning head assembly 650 can be inserted and fixed inside the protrusion 672B, thereby, the side cleaning module composed of the first motor 660, the actuator assembly 670 and the cleaning head assembly 650 of the present disclosure has a smaller height.

[0145] In a preferred embodiment, the cleaning head assembly 650 can be detachably fixed to the protrusion 672B, and can be driven and rotated by the protrusion 672B.

[0146] Fig.10 is a schematic structural diagram of an actuating assembly according to one embodiment of the present disclosure. Fig.11 is a schematic structural diagram of a damping element according to an embodiment of the present disclosure.

[0147] like Fig.10 and Fig.11 As shown, the actuating 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 actuating assembly 670 of the present disclosure can be located below the base portion 610 as a whole, and accordingly, the output shaft of the first motor 660 or the output shaft of the reducer can pass through the base portion 610 and be transmission-connected with the actuating assembly.

[0148] The damping element 674 can be located outside the second bracket 672 . For example, the damping element 674 can be cylindrical and sleeved outside the second bracket 672 . Thus, the damping element 674 can apply preset damping to the second bracket 672 .

[0149] Specifically, the damping applied by the damping element 674 to the second bracket 672 needs to satisfy the requirement that the second bracket 672 does not rotate during the rising or falling process, or even if the second bracket 672 rotates during the rising or falling process, the rotation speed of the second bracket 672 is lower than that of the first bracket 671. In other words, during the rising or falling process, 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 rise or fall.

[0150] In a specific embodiment, Fig.11 As shown, the damping element 674 includes a base 674A, which is a cylindrical component and has a slot on the side wall thereof. A damping portion 674B is disposed in the slot and can apply damping to the second bracket 672 .

[0151] In the present disclosure, both ends of the damping portion 674B are connected to the side walls of the slot through an elastic member 674C, whereby, when the second bracket 672 is not provided inside the damping element 674, at least a portion of the damping portion 674B can be located inside the base 674A, and accordingly, when the second bracket 672 is installed inside the damping element 674, the damping element 674 can apply positive pressure to the second bracket 672, and a friction force is formed between the damping element 674 and the second bracket 672 through the positive pressure, and further, a damping effect of the damping element 674 on the second bracket 672 is formed through the friction force.

[0152] 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 to: when the second bracket 672 is located at the first position or the second position, and when the second bracket 672 does not generate an upward or downward movement, the first bracket 671 can drive the second bracket 672 to rotate.

[0153] In the present disclosure, the number of the damping portions 674B may be set to be multiple, for example, the number of the damping portions 674B may be set to be three, and the three damping portions 674B may be evenly distributed along the circumferential direction of the base portion 674A.

[0154] Fig.12 is a schematic structural diagram of an avoidance portion 611 according to an embodiment of the present disclosure. Fig.13 It is a schematic structural diagram of an avoidance portion according to another embodiment of the present disclosure.

[0155] like Fig.12 As shown, the housing assembly of the present disclosure limits the avoidance portion 611 , and at least a portion of the actuation assembly 670 is disposed within the avoidance portion 611 .

[0156] In one embodiment, the lower surface of the base portion 610 is formed into a roughly planar shape, that is, the base portion 610 has a roughly planar bottom wall, wherein at least a portion of the bottom wall of the base portion 610 is recessed upward to form an avoidance portion 611, thereby, 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.

[0157] 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 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.

[0158] In a preferred embodiment, the base portion 610 includes a substantially planar side wall, for example, the side wall may be located in a vertical plane, and at least a portion of the avoidance portion 611 extends on the side wall. That is, in the present disclosure, even if the cleaning head assembly 650 is in a raised position, at least a portion of the cleaning head assembly 650 may still be located outside the projection of the floor brush assembly 600 on the horizontal plane. Based on this, it is necessary to leave an area on the side wall of the base portion 610 to avoid the cleaning head assembly 650, and to allow at least a portion of the avoidance portion 611 to extend on the side wall of the base portion 610.

[0159] 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 inclined, so that the avoidance edge 611C can be roughly parallel to the inclined cleaning head assembly 650, so as to facilitate at least part of the cleaning head assembly 650 to be stored in the avoidance portion 611.

[0160] More preferably, at least a portion of the avoidance side wall 611A of the avoidance portion 611 is formed in an arcuate shape. Accordingly, the disc-shaped cleaning head assembly 650 can be better accommodated by the arcuate avoidance side wall 611A.

[0161] Fig.14 is a schematic structural diagram of a cleaning head assembly 650 according to one embodiment of the present disclosure.

[0162] like Fig.14 As 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.

[0163] The cleaning plate 651 of the present invention can move synchronously with the second bracket 672. Specifically, when the second bracket 672 rises or falls, it can drive the cleaning plate 651 to rise or fall synchronously. At the same time, when the second bracket 672 rotates, it can drive the cleaning plate 651 to rotate.

[0164] The cleaning element 652 can be fixed to the cleaning disc 651, for example, the cleaning element 652 can be adhered to the cleaning disc 651 by Velcro, whereby when the cleaning disc 651 rotates, it can drive the cleaning element 652 to rotate, and make the cleaning element 652 frictionally contact with the surface to be cleaned, thereby scrubbing the surface to be cleaned.

[0165] In the present disclosure, the cleaning element 652 can be made of materials such as flannel and can be formed into a ring shape; moreover, a rubber-coated portion 653 is formed on the outer side of the cleaning disc 651, and the rubber-coated portion 653 can be located above the cleaning element 652. In the present disclosure, a plurality of hollows are formed on the rubber-coated portion 652. When the cleaning liquid is provided to the hollow positions of the rubber-coated portion 653, the cleaning liquid can flow to the cleaning element 652 under the action of gravity to wet the cleaning element 652.

[0166] The cleaning disc 651 and the cleaning element 652 of the present disclosure may be formed into a circular structure, or may be formed into a semicircular structure or a fan-shaped structure, etc. The present disclosure will not elaborate on them one by one here.

[0167] When the surface cleaning device is located on the surface to be cleaned, the surface to be cleaned is substantially formed as a horizontal plane, and there is a first angle between the cleaning element 652 and the surface to be cleaned, and the angle of the first angle is greater than 0°. In other words, when the actuating assembly 670 is in the second position, the cleaning head assembly 650 can be in a working state, at which time, at least part of the cleaning element 652 of the cleaning head assembly 650 can contact the surface to be cleaned, thereby achieving frictional contact between the cleaning element 652 and the surface to be cleaned through the rotation of the cleaning element 652, and achieving cleaning of the surface to be cleaned.

[0168] Preferably, the cleaning element 652 has a circular profile, and along the lateral direction of the floor brush assembly 600, the cleaning element 652 has a first portion located outside the outer shell assembly of the floor brush assembly 600 and a second portion located inside the outer shell assembly of the floor brush assembly 600; wherein, the cleaning element 652 has a first portion located outside the outer shell assembly of the floor brush assembly 600 means that the projection of the first portion of the cleaning element 652 on the surface to be cleaned is located outside the projection of the outer shell assembly on the surface to be cleaned.

[0169] At this time, when the actuating assembly 670 is in the second position, at least a portion of the first portion of the cleaning element 652 can contact the surface to be cleaned, and accordingly, at least a portion of the second portion of the cleaning element 652 can be away from the surface to be cleaned, so that at least a portion of the second portion does not contact the surface to be cleaned.

[0170] Accordingly, when the actuating assembly 670 is in the first position, the cleaning element 652 as a whole is away from the surface to be cleaned and does not contact the surface to be cleaned, and the second portion of the cleaning element 652 is located at a higher position than the first portion of the cleaning element 652 .

[0171] In the present disclosure, the cleaning disc 651 has a rotation axis, the cleaning element 652 has a rotation axis, and the rotation axis of the cleaning disc 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.

[0172] 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 of the present disclosure coincides with the rotation axis of the output shaft of the reducer, and accordingly, the rotation axis of the cleaning head assembly 650 is arranged in parallel with the rotation axis of the first motor 660; of course, due to the different reducer structures, the rotation axis of the first motor 660 may also be non-parallel to the rotation axis of the cleaning head assembly 650.

[0173] In a preferred embodiment, the rotation axis of the cleaning head assembly 650 is farther away 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 set as far away from the edge of the floor brush assembly 600 as possible, thereby leaving enough space for installing the cleaning head assembly 650.

[0174] In the present disclosure, the rotation axis of the cleaning head assembly 650 may be located in a vertical plane, and the vertical plane is perpendicular to the front-to-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 the vertical plane, there is an angle of a preset angle between the rotation axis of the cleaning head assembly 650 and the vertical straight line, that is, the rotation axis of the cleaning head assembly 650 is set obliquely. Preferably, the rotation axis of the cleaning head assembly 650 may also be parallel or approximately parallel to the rotation axis of the first motor 660.

[0175] Fig.15 is a schematic structural diagram of a liquid supply assembly according to one embodiment of the present disclosure. Fig.16 is a schematic diagram of a liquid supply assembly according to one embodiment of the present disclosure. Fig.17is a schematic structural diagram of a valve stem and a valve cover according to an embodiment of the present disclosure. Fig.18 It is a schematic cross-sectional structural diagram of a valve component according to one embodiment of the present disclosure.

[0176] like Figures 15 to 18 As 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 the liquid supply assembly 680 .

[0177] The liquid supply assembly 680 of the present disclosure can be connected to a liquid supply pump; of course, the liquid supply assembly 680 can also be connected to the supply tank 300 via an independently provided pump.

[0178] Specifically, the liquid supply assembly 680 may 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, whereby 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, wherein when the valve device 681 is in an open state, 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 a closed state, the liquid supply assembly 680 cannot provide cleaning liquid to the cleaning head assembly 650.

[0179] In another embodiment, since the cleaning head assembly 650 can be fixedly connected to the second bracket 672 of the actuating assembly 670, it can 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.

[0180] like Fig.17 and Fig.18 As shown, the valve device 681 of the present invention includes a valve body 681A, a valve stem 681B and a valve cover 681C; wherein, the valve body 681A forms a liquid flow path, and the liquid flow path can be arranged along the axial direction of the valve body 681A; at the same time, the valve body 681A also includes an inlet pipeline and an outlet pipeline, and the inlet pipeline and the outlet pipeline are both connected to the liquid flow path of the valve body 681A; wherein, the inlet pipeline can be connected to a liquid supply pump, and the outlet pipeline can be connected to a sprinkler head 682.

[0181] 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 in the open position, the valve device 681 can be in an open state; correspondingly, when the valve stem 681B is located in the closed position, the valve device 681 can be in a closed state.

[0182] 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.

[0183] like Fig.18 As shown, the valve device 681 is in a closed state, that is, the valve stem 681B is in a closed position, and the water inlet pipeline and the water outlet pipeline are not connected at this time; 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, so that the water outlet pipeline can be conveniently connected to the sprinkler head 682.

[0184] When the valve stem 681B is driven by the spring 681D and moves downward, the valve stem 681B can be located in the open position and allow the water inlet pipe and the water outlet pipe to communicate.

[0185] In the present disclosure, the lower end of the second bracket 672 of the actuating assembly 670 is formed with an outer flange, and the lower end of the valve stem 681B can contact the upper surface of the outer flange of the second bracket 672, so that when the second bracket 672 rotates, the lower end of the valve stem 681B can slide and contact with the upper surface of the outer flange of the second bracket 672, so that the valve stem 681B will not affect the rotation of the second bracket 672 of the actuating assembly 670. Accordingly, 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, and accordingly, 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 will be allowed to move downward, and accordingly, under the action of the reset force provided by the spring 681D, the valve stem 681B can move from the closed position to the open position.

[0186] Refer to Fig.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 be placed on the valve cover, and the other end of the spring can be placed on the second sealing portion 681B2, and the first sealing portion 681B1 and the second sealing portion 681B2 can both be in sealing contact with the inner wall of the liquid flow path of the valve body 681A.

[0187] Moreover, the position of the first sealing portion 681B1 is set to be always located below the water outlet pipe; the position of the second sealing portion 681B2 is set to be located between the water inlet pipe and the water outlet pipe, and can be located below the water outlet pipe, but cannot be located above the water inlet pipe, so that the valve stem 681B of the present disclosure can make the valve device in an open state or a closed state during the up and down movement. Specifically, when the valve stem 681B is in the open position, the second sealing portion 681B2 is located below the water outlet pipe; when the valve stem 681B is in the closed position, the second sealing portion 681B2 is located between the water inlet pipe and the water outlet pipe.

[0188] 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 .

[0189] The water spray head 682 is arranged on the base portion 610, and one end of the water 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, so that the cleaning liquid provided by the water spray head 682 can be provided to the cleaning head assembly 650, for example, provided to the hollow of the rubber-wrapped portion 653 of the cleaning head assembly 650.

[0190] Fig.19 is a schematic structural diagram of a first sensor assembly 690 according to an embodiment of the present disclosure. Fig. 20 yes Fig.19 Schematic diagram of enlarged portion A.

[0191] like Fig.19 and Fig. 20 As shown, 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 close to the wall. The first sensor assembly 690 can be disposed in the housing assembly of the floor brush assembly 600, for example, in the cover portion 620 of the housing assembly; of course, the first sensor assembly 690 can also be disposed in 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.

[0192] The first sensor assembly 690 may be a proximity sensor, such as a distance sensor, which is used to detect a first distance between the side wall of the floor brush assembly 600 and the wall.

[0193] In some embodiments, the side wall of the floor brush assembly 600 is arranged substantially vertically. Specifically, the side wall of the housing assembly of the floor brush assembly 600 is formed as a substantially vertical plane, which is substantially perpendicular to the lateral direction of the floor brush assembly 600. More specifically, the base portion 610 and / or the cover portion 620 of the housing assembly of the floor brush assembly 600 each include a substantially vertically arranged side wall. Accordingly, the first sensor assembly 690 is arranged on the substantially vertical side wall, thereby being able to accurately detect the distance between the side wall of the floor brush assembly 600 and the wall (external object) through the first sensor assembly 690.

[0194] In the present disclosure, when the distance sensor is set to one, it can be set on the side wall on the right side of the forward 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, the right side of the floor brush assembly 600 is generally easy to contact the wall, etc. Accordingly, setting the distance sensor on the right side wall can make it easier for the distance sensor to detect the distance between the floor brush assembly 600 and the wall, which has a better use effect. On the other hand, the distance sensor can also be set to two. Accordingly, the distance sensor can be set on the side walls on the left and right sides of the forward direction of the floor brush assembly 600. Thus, the distance sensor can sense the distance between the wall surfaces on both sides of the floor brush assembly 600 and the floor brush assembly 600.

[0195] In a preferred embodiment, the distance sensor includes an optical sensor, an infrared sensor, a laser sensor, etc. In this case, the distance sensor may include a transmitting unit 691 and a receiving unit 692; the transmitting unit 691 can transmit an optical signal, an infrared signal, or a laser signal; the receiving unit 692 can receive an 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 on the housing assembly is fixed, the distance between the housing assembly (i.e., the floor brush assembly 600) and the wall can be obtained.

[0196] In the present disclosure, a through hole is opened on the cover body 620, and the transmission signal and the echo signal of the distance sensor can be transmitted through the through hole.

[0197] 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 receive the distance between the floor brush assembly 600 and the wall detected by the first sensor assembly 690, and can control the action 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 accordingly, the cleaning head assembly 650 can also be in a working state, thereby, 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 accordingly, the cleaning head assembly 650 is also in a non-working state, and at this time, the cleaning head assembly 650 can be in a raised position so that the cleaning head assembly 650 does not contact the surface to be cleaned.

[0198] 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 in a raised position, the cleaning head assembly 650 is kept in a raised position; when the cleaning head assembly 650 is in a lowered position, the controller can control the first motor 660 to reverse, so that the cleaning head assembly 650 is raised from a lowered position to a raised position, and the cleaning head assembly 650 is in a non-working state; and after the cleaning head assembly 650 is in a raised position, the power supply of the first motor 660 is turned off.

[0199] In another case, when the first distance is less than or equal to the 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 a working state, and when the first motor 660 is working, the cleaning head assembly 650 can be lowered, that is, the cleaning head assembly 650 can be lowered from the raised position to the lowered position. In the 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.

[0200] In a similar working process, the controller of the present invention can also increase and decrease the output power of the first motor 660; specifically, when the first distance is greater than a preset distance threshold, if the first motor 660 is in a 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, the output power of the first motor 660 can be increased over time, so that the cleaning head assembly 650 has a better edge cleaning effect.

[0201] 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 a 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, the rotation speed of the first motor 660 can be increased over time, so that the cleaning head assembly 650 has a better edge cleaning effect.

[0202] 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 a 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, the cleaning head assembly 650 is in a non-working state, and 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 a working state, and the controller increases the suction power of the electric suction source, so that the cleaning head assembly 650 and the agitator 630 can both 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.

[0203] The controller is also used to obtain the amount of cleaning liquid in the supply tank 300 before the operation cycle of the first motor 660; for example, a sensor for detecting the volume of the cleaning liquid may be provided in the supply tank 300, so that the controller can obtain the amount of cleaning liquid in real time, and accordingly can obtain the consumption rate of the cleaning liquid, etc.

[0204] When the first motor 660 is operated and the cleaning head assembly 650 is located at the lowered position, the cleaning liquid in the supply tank 300 is provided to the cleaning head assembly 650 via the liquid dispenser.

[0205] 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 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 the preset first speed threshold, the amount of cleaning liquid used in each operation cycle of the first motor 660 will be too much. At this time, the power of the liquid dispenser can be reduced to reduce the consumption rate of the cleaning liquid.

[0206] Similarly, when the amount of cleaning liquid used in each operation cycle of the first motor 660 is too small, 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 the preset second speed threshold, the amount of cleaning liquid used in each operation 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. Therefore, during the use of the surface cleaning device, a suitable amount of cleaning liquid can be provided to the surface to be cleaned, thereby improving the cleaning effect of the surface to be cleaned.

[0207] More preferably, the first speed threshold is greater than the second speed threshold.

[0208] In a preferred embodiment, the surface cleaning device of the present disclosure may further include a solenoid valve, which is used to start or stop supplying 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 each time when the amount of cleaning liquid used in the operating cycle of the first motor 660 is too much; and / or, start supplying cleaning liquid to the cleaning head assembly 650 each time when the amount of cleaning liquid used in the operating cycle of the first motor 660 is too little.

[0209] The solenoid valve and the water spray head 682 of the present invention together constitute a liquid distribution component of another embodiment. That is, the valve device 681 of the present invention can be replaced by the solenoid valve to form a different technical solution.

[0210] In the present disclosure, the controller is used to process the usage data of the first motor 660, and obtain a notification that the cleaning head assembly 650 needs to be maintained according to the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may also include a current sensor, which is used to detect the current flowing through the first motor 660; therefore, 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.

[0211] Specifically, the notification of maintenance of the cleaning head assembly 650 includes: the cleaning head assembly 650 is entangled; the cleaning head assembly 650 is stuck in rotation; and / or the cleaning head assembly 650 is stuck in movement, etc.

[0212] In addition, the controller processes the usage data of the first motor 660, and obtains a notification that the cleaning element 652 needs to be maintained based on the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may also include a current sensor, which is used 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, and accordingly, can obtain the working time of the cleaning element 652 based on the working time of the first motor 660; when the working time of the cleaning element 652 is greater than the first preset time threshold, the cleaning element 652 needs to be cleaned, and at this time, the surface cleaning device can dock at the base station 900, and clean the cleaning element 652 of the surface cleaning device through the base station 900, on the other hand, when the working time of the cleaning element 652 is greater than or equal to the 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 accordingly, the cleaning effect of the surface cleaning device on the surface to be cleaned is improved.

[0213] Fig.21 It is a schematic structural diagram of a scraping assembly and a suction head according to one embodiment of the present disclosure. Fig. 22 It is a schematic structural diagram of a scraping assembly and a suction head at another angle according to an embodiment of the present disclosure. Fig.23 It is a schematic structural diagram of a scraping assembly according to one embodiment of the present disclosure. Fig.24 It is a schematic structural diagram of a scraping assembly from another angle according to an embodiment of the present disclosure. Fig.25 It is a schematic structural diagram of a suction head according to one embodiment of the present disclosure.

[0214] like Figure 21 to Figure 24 As shown, the floor brush assembly 600 of the present disclosure may further include a scraping assembly 700, wherein the scraping assembly 700 is mounted on the housing assembly; when the cleaning head assembly 650 is changed from a raised position to a lowered position, at least a portion of the cleaning head assembly 650 interferes with the scraping assembly 700, so that the scraping assembly 700 scrapes off dirt adhered to the cleaning head assembly 650 through the rotation of the cleaning head assembly 650.

[0215] In a preferred embodiment, the scraping assembly 700 can be configured 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, and accordingly, 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 maintain the scraping assembly 700.

[0216] In the present disclosure, the scraper assembly 700 is installed on the base portion 610 of the housing assembly. For example, the scraper assembly 700 can be fixed to the bottom wall of the base portion 610 , and at least a portion of the scraper assembly 700 is located below the base portion 610 .

[0217] In some embodiments, in the working state, the roller and agitator 630 support the floor brush assembly 600, for example, support the base portion 610 of the floor brush assembly, and prevent the scraping assembly 700 from interfering with the surface to be cleaned; that is, during the operation of the surface cleaning device, the bottom surface of the scraping assembly 700 is spaced from the surface to be cleaned, so that the scraping assembly 700 does not contact the surface to be cleaned, thereby, the scraping assembly 700 does not cause damage to the surface to be cleaned, and the surface to be cleaned does not damage the scraping assembly 700.

[0218] In a preferred embodiment, the bottom surface of the scraping assembly 700 is substantially flush with the bottom surface of the shell assembly, whereby the bottom surface of the shell assembly, the bottom surface of the scraping assembly 700 and the surface to be cleaned have substantially the same distance; on the other hand, at least a portion of the bottom surface of the scraping assembly 700 of the present disclosure may also protrude from the bottom surface of the shell assembly, whereby the distance between the bottom surface of the scraping assembly 700 and the surface to be cleaned is smaller than the distance between the bottom surface of the shell assembly and the surface to be cleaned, whereby the cleaning head assembly 650 and the first motor 660 and other components of the present disclosure do not protrude too much from the upper surface of the shell assembly in the vertical direction, and accordingly, the surface cleaning device of the present disclosure is more beautiful.

[0219] In one embodiment, the scraping assembly 700 is connected to the suction nozzle 640 or the recovery pipe 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 located inside the base portion 610. That is, after the scraping assembly 700 of the present disclosure removes dirt and cleaning liquid on the cleaning head assembly 650, the dirt and cleaning liquid can be sucked into the suction nozzle 640 or the recovery pipe 401 through the suction head 710, and then enter the recovery tank 400 along with the airflow in the recovery pipe 401.

[0220] In the present disclosure, since the frequency of use of the cleaning head assembly 650 is low, and when the cleaning head assembly 650 is used, the contact area between the cleaning head assembly 650 and the surface to be cleaned is small, and 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, thereby improving the cleaning effect of the floor brush assembly 600.

[0221] In a preferred embodiment, a solenoid valve may be provided between the suction head 710 and the suction nozzle 640 or the recovery pipeline 401, so that the liquid flow path between the suction head 710 and the suction nozzle 640 or the recovery pipeline 401 can be opened or closed by controlling the switch of the solenoid valve. Specifically, when the cleaning head assembly 650 of the present disclosure is in a working state (when the cleaning head assembly 650 is in a 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 a non-working state (when the cleaning head assembly 650 is in an ascending position), the solenoid valve can be closed so that negative pressure can be completely provided to the suction nozzle 640, thereby 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 endurance of the surface cleaning device can also be improved.

[0222] In the present disclosure, a filter screen 711 is provided at one end of the suction head 710 located in the scraping assembly 700; thus, the suction head 710 can only absorb the liquid in the solid-liquid mixture (a mixture of dirty and clean liquids) stored in the scraping assembly 700, and accordingly, the solids in the solid-liquid mixture are retained in the scraping assembly 700, thereby effectively preventing the solids in the solid-liquid mixture from clogging the liquid flow path of the suction head 710 when the diameter of the liquid flow path of the suction head 710 is small.

[0223] When the surface cleaning device completes the cleaning operation, the scraping assembly 700 can be removed from the outer shell assembly of the floor brush assembly 600 so that the solids in the solid-liquid mixture retained in the scraping assembly 700 can be cleaned in time; on the other hand, the filter 711 can be removed from the suction head 710, thereby, the filter 711 can also be removed from the suction head 710, and the solid dirt attached to the filter 711 can be cleaned to prevent these solid dirt from generating odor.

[0224] The structure of the scraping assembly 700 will be described in detail below with reference to the accompanying drawings.

[0225] like Figure 22 to Figure 24 As shown, the scraping assembly 700 of the present disclosure may include: a bottom plate 701 , a first side plate 702 , a second side plate 703 , a liquid storage portion 704 , a scraper 705 and other components.

[0226] The bottom plate 701 includes a first direction and a second direction, wherein 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 is inclined upward from the first end to the second end, thereby allowing the cleaning liquid to flow from the second end to the first end under the action of gravity.

[0227] The first side plate 702 and the second side plate 703 are respectively disposed at two ends of the bottom plate 701 in the second direction, wherein 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.

[0228] 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 have substantially the same structure including a symmetrically arranged structure of the first side plate 702 and the second side plate 703.

[0229] The structure of the first side plate 702 is described below as an example, in which the first portion 702A of the first side plate 702 is disposed close to the first end of the bottom plate 701 in the first direction, and correspondingly, the second portion 702B of the first side plate 702 is disposed close to the second end of the bottom plate 701 in the first direction, and in the height direction, the first portion 702A of the first side plate 702 has a larger size than the second portion 702B. In other words, the upper end of the first portion 702A is further away from the upper surface of the bottom plate 701 than the upper end of the second portion 702B.

[0230] In the present disclosure, a liquid storage portion 704 is provided on the bottom plate 701, wherein the liquid storage portion 704 is provided close to the first end of the bottom plate 701 in the first direction, and at the same time, a baffle component 706 is also provided at the second end of the bottom plate 701 in the first direction, so that the bottom plate 701, the liquid storage portion 704, the first side plate 702, the second side plate 703 and the baffle component 706 together form a liquid storage tank opening upward.

[0231] At the same time, a scraper 705 is also provided on the bottom plate 701, and the scraper 705 is configured to extend upward from the upper surface of the bottom plate 701 by a preset distance, that is, the scraper 705 of the present disclosure has a preset size in the height direction, and the upper end of the scraper 705 is higher than the upper end of the second part 702B of the first side plate 702, and also higher than the upper end of the second part of the second side plate 703. That is to say, when the cleaning head assembly 650 of the present disclosure is in the working state, that is, when the cleaning head assembly 650 is in the lowered position, at least part of the cleaning head assembly 650 can interfere with the scraper 705, and does not interfere with the second part 702B of the first side plate 702, and correspondingly, does not interfere with the second part of the second side plate 703, so that 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.

[0232] 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 to the area between the scraper 705 and the first side plate 702, or recovered to 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.

[0233] In a preferred embodiment, the surface of the upper end of the scraper 705 is configured as an inclined surface and is inclined 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 base plate 701). Thus, the upper surface of the scraper 705 (i.e., the inclined surface) of the present disclosure can be arranged approximately parallel to the lower surface of the cleaning element 652, and accordingly, the scraper 705 can have a preset interference depth with the cleaning element 652, and the interference depth is approximately the same along the radial direction of the cleaning element 652.

[0234] The liquid storage part 704 of the present invention has a liquid storage space inside, wherein a through hole is opened on the side wall of the liquid storage part 704, and the liquid storage space can be connected to the liquid storage tank through the through hole, that is, the solid-liquid mixture such as dirty and clean liquids of the present invention can flow to the liquid storage space under the action of gravity or negative pressure adsorption, and be recovered to the recovery tank 400 through the liquid storage space.

[0235] In a preferred embodiment, one end of the scraper 705 is connected to the liquid storage portion 704, and both sides of the scraper 705 have through holes, and accordingly, the solid-liquid mixture on both sides of the scraper 705 can flow into the liquid storage space.

[0236] 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 .

[0237] In the present disclosure, there is a preset distance 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 solid in the solid-liquid mixture can be located below the suction head 710, and accordingly, the solid in the solid-liquid mixture will not affect the normal operation of the filter screen 711.

[0238] In the present disclosure, a step portion 707 is provided inside the liquid storage portion 704, and one end of the suction head 710 can contact the step portion 707 and be limited in position by the step portion 707, so that the filter net 711 of the present disclosure can also be limited in position by the step portion 707. At this time, the setting of the step portion 707 can effectively prevent the filter net 711 from detaching from the suction head 710.

[0239] Moreover, the baffle component 706 of the present invention should not be set too high. Specifically, when the cleaning head assembly 650 is in a working state, that is, when the cleaning head assembly 650 is in a lowered position, the baffle component 706 is set not to contact the lower surface of the cleaning head assembly 650. At this time, the lower surface of the cleaning head assembly 650 (for example, the cleaning element 652 of the cleaning head assembly 650) is only in contact with the scraper 705, thereby only scraping the dirt and cleaning liquid of the cleaning head assembly 650 through the scraper 705, 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.

[0240] 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 located directly above the scraper 705; on the one hand, due to the rotation of the cleaning head assembly 650 and the cleaning liquid provided by the water spray head 682, it takes a certain amount of time to infiltrate the cleaning head assembly 650, so the scraper 705 does not scrape off the newly added cleaning liquid, but mainly removes the cleaning liquid that has been used; on the other hand, after the scraper 705 removes the cleaning liquid that has been used, the cleaning element 652 of the cleaning head assembly 650 is in a roughly dry state and needs to be replenished with cleaning liquid. At this time, the cleaning element 652 will have better water absorption capacity, thereby accelerating the infiltration of the cleaning liquid into the cleaning element 652. In addition, since the cleaning head assembly 650 in contact with the scraper 705 needs to go through a large circumferential movement distance before it can contact the surface to be cleaned, during this period of time, the cleaning element 652 of the cleaning head assembly 650 can be effectively soaked in the cleaning liquid, thereby improving the cleaning effect of the cleaning head assembly 650 on the surface to be cleaned.

[0241] In the present disclosure, at least a portion 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 .

[0242] Specifically, the bottom wall of the base portion 610 of the present invention is recessed upward to form a receiving groove, and 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. Accordingly, the bottom plate 701 and other components of the scraping assembly 700 can be located outside the receiving groove.

[0243] Fig.26 It is a structural schematic diagram of a floor brush assembly at an angle according to an embodiment of the present disclosure. Fig. 27 yes Fig.26 Schematic diagram of the enlarged structure. Fig.28 It is a structural schematic diagram of a floor brush assembly from another angle according to an embodiment of the present disclosure. Fig.29yes Fig.28 Enlarged schematic diagram of part C of FIG.

[0244] like Figure 26 to Figure 29 As shown, in the present disclosure, the receiving groove is formed by the first side wall 612, the second side wall 613 and the rear wall 614. Specifically, the first side wall 612 and the second side wall 613 are arranged opposite to each other, 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 approach and cooperate with the first side wall 612, and correspondingly, the second side wall 613 can approach and cooperate with the second side plate 703, so that the scraping assembly 700 can be fixed by the base portion 610.

[0245] More preferably, a fixing element 615 is provided on the base portion 610, wherein the fixing element 615 can slide along the base portion 610 and has an open position and a closed position; wherein, when the fixing element 615 is in the closed position, at least a portion of the fixing element 615 can be located in the accommodating groove, for example, one end of the fixing element 615 can pass through the rear wall 614 and be located in the accommodating groove, and when the fixing element 615 is in the open position, the portion of the fixing element 615 located in the accommodating groove will be moved out of the accommodating groove, thereby allowing the scraping assembly 700 to be disassembled from the base portion 610.

[0246] On the other hand, a slot 708 is provided on the liquid storage portion 704 of the scraping assembly 700, and the slot 708 can cooperate with the fixing element 615, so that when at least a portion of the scraping assembly 700 is located in the receiving groove, one end of the fixing element 615 can be inserted into the slot 708, thereby fixing the scraping assembly 700 to the base portion 610 through the fixing element 615.

[0247] In the present disclosure, the fixing element 615 can be moved from the closed position to the open position by operating the protrusion on the fixing element 615, and at the same time, the fixing element 615 can be moved from the open position to the closed position by the reset force of the spring. More preferably, the movement of the fixing element 615 can be guided by a guide structure provided on the base portion 610.

[0248] Moreover, the upper surface of the end of the fixing element 615 located in the slot 708 is set to be a substantially horizontal surface, and accordingly, the upper surface of the slot 708 is also set to be a substantially horizontal surface, so that the fixing element 615 can be engaged with the slot 708 and the position of the scraping assembly 700 is limited. In addition, the lower surface of the end of the fixing element 615 located in the slot 708 is set to be an inclined surface, and accordingly, when the scraping assembly 700 is installed on the base 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 to move from the closed position to the open position, thereby facilitating the installation of the scraping assembly 700. Then, when the scraping assembly 700 is further pushed and installed to the 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, and accordingly, one end of the fixing element 615 can be inserted into the slot 708, thereby achieving the position limitation of the scraping assembly 700.

[0249] In a preferred embodiment, a stop component may be provided on the base portion 610 , and the stop component can limit the fixing element 615 in the closed position, thereby preventing the fixing element 615 from being separated from the base portion 610 through the provision of the stop component.

[0250] like Fig.29 As shown, the first side wall 612 and the second side wall 613 of the present disclosure are both provided with a guide structure 612A. Specifically, taking the first side wall 612 as an example, the guide structure 612A can be a guide protrusion, and accordingly, a guide groove 702C is formed on the first side plate 702, and the guide protrusion and the guide groove cooperate to guide the scraping assembly 700 when it is installed on the base portion 610 or removed from the base portion 610, thereby facilitating the installation and removal of the scraping assembly 700. Preferably, the guide groove 702C is formed on the first portion 702A of the first side plate 702.

[0251] In addition, an elastic fixing member 702D is also provided on the first side plate 702, and a clamping hole 612B is also 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 in the clamping hole 612B. In other words, the elastic fixing member 702D of the present disclosure can produce a certain elastic deformation. During the installation of the scraping assembly 700, the elastic fixing member 702D is compressed to move toward the inside of the scraping assembly 700; when the scraping assembly 700 is installed to the preset position, the elastic fixing member 702D returns to the initial position, so that the elastic fixing member 702D can be clamped in 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 portion 702A of the first side plate 702.

[0252] In general, the scraping assembly 700 can be firmly fixed on the base portion 610 through the combined action of the elastic fixing member 702D and the fixing element 615 .

[0253] Fig.30 It is a structural schematic diagram of a floor brush assembly 600 at an angle according to an embodiment of the present disclosure.

[0254] like Fig.30 As shown, the cover body 620 of the present disclosure has an upper surface; wherein, the cover body 620 is provided with a cavity portion 621 protruding from the upper surface of the cover body 620, and the cavity portion 621 is used to accommodate the first motor 660; the upper end surface of the cavity portion 621 is equal to or lower than the highest point of the upper surface of the cover body 620.

[0255] That is to say, the highest point of the upper surface of the remaining part of the cover 620 of the present disclosure after removing the chamber part 621 is formed as the highest point of the entire floor brush assembly 600. At this time, the upper end surface of the chamber part 621 can be flat. 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; accordingly, the upper end surface of the chamber part 621 is not formed as the highest point of the entire floor brush assembly 600, or the upper end surface of the chamber part 621 and the highest point of the upper surface of the remaining part of the cover 620 after removing the cover 620 jointly form the highest point of the entire floor brush assembly 600. In other words, there may be a height difference M1 between the highest point of the upper surface of the remaining part of the cover 620 after removing the chamber part 621 and the upper end surface of the chamber part 621, and the height difference M1 is greater than or equal to 0.

[0256] In addition, when the surface cleaning device is in a lying state, the highest point of the upper surface of the cover body 620 of the floor brush assembly 600 (i.e., the highest point of the upper surface of the remaining part of the cover body 620 after removing the chamber part 621) forms the highest point of the entire surface cleaning device.

[0257] More preferably, the connecting portion 500 is pivotally connected to the floor brush assembly 600. Specifically, the connecting portion 500 is rotatably connected to the outer shell assembly of the floor brush assembly 600, and the pivot axis between the connecting portion 500 and the outer shell assembly of the floor brush assembly 600 is a horizontal straight line, which is perpendicular to the front-to-back direction of the floor brush assembly 600.

[0258] In a preferred embodiment, the upper end surface of the chamber portion 621 is higher than a portion of the upper surface of the cover portion 620, thereby facilitating the positional arrangement of the first motor 660 and the valve device 681. Specifically, the first motor 660 and the valve device 681 of the present disclosure can be arranged vertically, so that the positional distribution of the components of the floor brush assembly 600 of the present disclosure is more reasonable.

[0259] That is, the chamber portion 621 of the present disclosure can accommodate not only a portion of the first motor 660 but also a portion of the valve device 681 , so that the valve device 681 can be arranged substantially vertically.

[0260] Fig.31 It is a structural schematic diagram of a floor brush assembly 600 at another angle according to an embodiment of the present disclosure.

[0261] like Fig.31 As shown, the cleaning head assembly 650 of the present disclosure can be arranged such that, in the lowered position, the inner side of the contact portion of the cleaning head assembly 650 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, when the floor brush assembly 600 is controlled to move forward, there will be no missed cleaning area within the cleaning width range of the floor brush assembly 600.

[0262] In a preferred embodiment, the agitator 630 may include a cleaning component, which may be made of flannel or other objects and formed into a cylindrical or track shape, whereby, along the axial direction of the cleaning component, the cleaning component includes a first end and a second end, and accordingly, the first end of the cleaning component is adjacent to a side wall of the floor brush assembly 600, and the second end of the cleaning component is adjacent to another side wall of the floor brush assembly 600, and there is a first edge distance D1 between the first end of the cleaning component and a side wall of the floor brush assembly 600.

[0263] In addition, when the cleaning head assembly 650 is in a lowered position, at least a portion of the cleaning element 652 contacts the surface to be cleaned, and a working surface is formed by the contact portion of the cleaning element 652 and the surface to be cleaned; at least a portion of the working surface is located within the horizontal plane projection of the outer shell assembly; wherein, the working surface has a second edge distance D2 between a portion of the floor brush assembly 600 located within the horizontal plane projection of the outer shell assembly and a side wall of the floor brush assembly 600; wherein, the second edge distance D2 is greater than the first edge distance D1; thereby, there is an overlapping cleaning area between the cleaning head assembly 650 and the agitator 630, which effectively prevents the occurrence of missed cleaning areas.

[0264] 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 a side wall of the floor brush assembly 600 .

[0265] According to another aspect of the present disclosure, a control method for a surface cleaning device is also provided. The surface cleaning device may be the surface cleaning device of the above embodiment.

[0266] Among them, the control method of the surface cleaning device may include: obtaining usage data generated by the first sensor component 690 indicating that the surface cleaning device is close to the wall; and turning on and off the power supply to the first motor 660 according to the usage data generated by the first sensor component 690; increasing and decreasing the output power of the first motor 660; and / or increasing and decreasing the rotation speed of the first motor 660.

[0267] 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.

[0268] In a preferred embodiment, the control method of the surface cleaning device of the present invention may also include: obtaining the amount of cleaning liquid in the supply tank 300; obtaining the usage of the cleaning liquid in the operating cycle of the first motor 660 according to the change in the amount of cleaning liquid in the supply tank 300; when the amount of cleaning liquid used in each operating cycle of the first motor 660 is too much, reducing the power of the liquid dispenser; and / or, when the amount of cleaning liquid used in each operating cycle of the first motor 660 is too little, increasing the power of the liquid dispenser.

[0269] In addition, when the amount of cleaning liquid used in each operation cycle of the first motor 660 is too much, the solenoid valve is controlled and the supply of cleaning liquid to the cleaning head assembly 650 is stopped; and / or, when the amount of cleaning liquid used in each operation cycle of the first motor 660 is too little, the solenoid valve is controlled and the supply of cleaning liquid to the cleaning head assembly 650 is started.

[0270] In some embodiments, the usage data of the first motor 660 is obtained, and a notification that the cleaning head assembly 650 needs to be maintained is obtained based on 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 notification that the cleaning head assembly 650 needs to be maintained includes one of the following: the cleaning head assembly 650 is entangled; the cleaning head assembly 650 is stuck in rotation; the cleaning head assembly 650 is stuck in movement. In other words, when the current flowing through the first motor 660 of the present disclosure is too large, one possible reason is that the first motor 660 is blocked, so it can be determined that the cleaning head assembly 650 is entangled, the cleaning head assembly 650 is stuck in rotation, or the cleaning head assembly 650 is stuck in movement. Based on the notification, the user can maintain the cleaning head assembly 650.

[0271] In the present disclosure, a notification of needing maintenance of the cleaning element 652 can also be obtained based on 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; needing maintenance of 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.

[0272] In a specific implementation form, the power supply to the first motor 660 is turned on and off according to the usage data generated by the first sensor component 690, including: obtaining a first distance between the floor brush component 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, maintaining the cleaning head component 650 in a raised position, or controlling the first motor 660 to move and causing the cleaning head component 650 to rise; when the first distance is less than or equal to the preset distance threshold, maintaining the cleaning head component 650 in a lowered position, or controlling the first motor 660 to move and causing the cleaning head component 650 to descend, thereby enabling the usage data generated by the first sensor component 690 to determine that the surface cleaning device is against the wall, the cleaning head component 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 component 650 is controlled to be able to rise.

[0273] According to another aspect of the present disclosure, another control method of a surface cleaning device is provided, and the surface cleaning device may be the surface cleaning device described above. The surface cleaning device includes a normal cleaning mode and an edge cleaning mode, in which the cleaning head assembly 650 is in a raised position and does not contact the surface to be cleaned, and accordingly, the first motor 660 is also in a non-operating state; in the edge cleaning mode, the cleaning head assembly 650 is in a lowered position and contacts the surface to be cleaned and cleans the surface to be cleaned.

[0274] 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 into working state according to the power-on signal of the surface cleaning device; selectively applying cleaning liquid to the cleaning head assembly 650 for a selected period of time to wet the contact surface between the cleaning head assembly 650 and the surface to be cleaned; and stopping applying 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.

[0275] That is to say, in the control method of the surface cleaning device of the present invention, when the surface cleaning device is turned on, cleaning liquid is provided to the cleaning head assembly 650, so that the cleaning head assembly 650 is fully moistened. Accordingly, when the surface cleaning device is close to the wall and is in the edge cleaning mode, the moistened cleaning head assembly 650 can immediately clean the wall edge, thereby improving the cleaning efficiency of the surface cleaning device.

[0276] More specifically, either or both of selectively applying cleaning liquid or stopping applying 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 capability and improves the user experience.

[0277] In the present disclosure, whether the surface cleaning device is in the edge cleaning mode is confirmed based on the size between the first distance and the preset distance threshold; 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, and in this edge cleaning mode, the working time of the edge cleaning mode is recorded, that is, the duration of the edge cleaning mode; further, when the duration is greater than or equal to the preset time threshold, the application of cleaning liquid to the cleaning head assembly 650 does not stop after the selected time is reached, thereby, when the surface cleaning device is in the edge cleaning mode from the time it is turned on, it can remain in the edge cleaning mode, and cleaning liquid is applied to the cleaning head assembly 650 until the edge cleaning mode ends.

[0278] In the present disclosure, either or both of selectively applying cleaning liquid or stopping applying cleaning liquid are performed by the user controlling a user interaction button (trigger), whereby the user can control the application of cleaning liquid or stop applying cleaning liquid according to the degree of dirtiness of the surface to be cleaned, thereby avoiding wasting cleaning liquid and increasing the use time of the cleaning liquid of the surface cleaning device.

[0279] In some embodiments, during the process of applying cleaning liquid to the cleaning head assembly 650, the cleaning head assembly 650 keeps rotating, thereby enabling the entire cleaning head assembly 650 to be evenly moistened. Accordingly, when the cleaning head assembly 650 contacts the surface to be cleaned and cleans the surface to be cleaned, the surface to be cleaned can be evenly wet cleaned, thereby preventing water stains from appearing on part of the surface to be cleaned while cleaning liquid is not provided to part of the surface to be cleaned.

[0280] After the cleaning liquid is applied to the cleaning head assembly 650, the user is prompted that the cleaning liquid has been applied to the cleaning head assembly 650, thereby the user can accurately know the status of the cleaning head assembly 650 and will not issue erroneous instructions to the surface cleaning device.

[0281] In a preferred embodiment, the selected period of time is greater than or equal to 5 seconds and less than or equal to 10 seconds; on the one hand, within this time, the cleaning head assembly 650 can be fully wetted; on the other hand, this time will not excessively affect the user's use of the surface cleaning device.

[0282] In the present disclosure, when the cleaning liquid is selectively stopped from being applied to the cleaning head assembly 650, the cleaning liquid is kept applied to the agitator 630, so that 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.

[0283] In a preferred embodiment, when the cleaning liquid is selectively applied, the cleaning head assembly 650 is in a raised position, at which time the on and off of the solenoid valve can be controlled to provide the cleaning liquid to the cleaning head assembly 650. As can be seen from the above analysis, when the cleaning head assembly 650 is in a 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 drop.

[0284] In another embodiment, when the cleaning liquid is selectively applied, the cleaning head assembly 650 is located in a lowered position. After the application of the cleaning liquid stops, the cleaning head assembly 650 moves from the lowered position to the raised position. At this time, the cleaning liquid can be provided to the cleaning head assembly 650 through the above-mentioned valve device 681. At this time, the lifting and lowering 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 moved to the raised position, and at the raised position, waits for the surface cleaning device to enter the edge cleaning mode.

[0285] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0286] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0287] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A surface cleaning device, characterized in that: include: Main body; 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, the supply tank is disposed on the main body and is used to store 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, the floor brush assembly is pivotally connected to the main body, and the surface to be cleaned is cleaned by the floor brush assembly; 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; and in the lowered position, the working range of the cleaning head assembly is outside the horizontal plane projection of the housing assembly; and A first motor, the first motor is used to drive the cleaning head assembly to generate lifting motion and / or rotation; Wherein, the first motor has a rotation axis, and when the surface cleaning device is located on a substantially horizontal surface to be cleaned, the rotation axis of the first motor is inclined toward the outside of the floor brush assembly in a bottom-up direction.

2. The surface cleaning device according to claim 1, characterized in that The cleaning head assembly includes a cleaning disc and a cleaning element, wherein the cleaning disc is detachably connected to the actuating assembly, and the cleaning element is connected to the cleaning disc; When the surface cleaning device is located on a surface to be cleaned, a first angle is formed between the cleaning element and the surface to be cleaned, and the angle of the first angle is greater than 0°.

3. The surface cleaning device according to claim 1, characterized in that The cleaning head assembly includes a cleaning disc and a cleaning element, wherein the cleaning disc is detachably connected to the actuating assembly, and the cleaning element is connected to the cleaning disc; When the surface cleaning apparatus is positioned over a surface to be cleaned, a portion of the cleaning element is in contact with the surface to be cleaned.

4. The surface cleaning device according to claim 3, characterized in that The cleaning element has a circular profile, and a portion of the cleaning element includes at least an outer edge of the circular profile.

5. The surface cleaning device according to claim 3, characterized in that The rotation axis of the cleaning disc does not coincide with the rotation axis of the first motor.

6. The surface cleaning device according to claim 3, characterized in that The rotation axis of the first motor is parallel or substantially parallel to the rotation axis of the cleaning head assembly.

7. The surface cleaning device according to claim 3, characterized in that The rotation axis of the cleaning disc is farther away from the middle of the floor brush assembly than the rotation axis of the first motor.

8. The surface cleaning device according to claim 3, characterized in that The first motor is used to drive the actuating assembly to lift and / or rotate; and enables the actuating assembly to move between a first position and a second position so that the actuating assembly changes height relative to the bottom surface of the housing assembly; wherein, when the actuating assembly is located in the first position, the actuating assembly drives the cleaning head assembly and causes the cleaning head assembly to be located in a raised position; and when the actuating assembly is located in the second position, the actuating assembly drives the cleaning head assembly and causes the cleaning head assembly to be located in a lowered position.

9. The surface cleaning device according to claim 8, characterized in that When the actuating assembly is located at the second position, the actuating assembly can be driven by the first motor to rotate, and the actuating assembly drives the cleaning head assembly to rotate.

10. The surface cleaning device according to claim 8, characterized in that The actuating assembly comprises: a first bracket, wherein the first bracket can receive a driving force of the first motor and generate rotation; and The second bracket cooperates with the first bracket so that when the second bracket is in the second position and the first bracket rotates along the first direction, the first bracket drives the second bracket to rotate; when the second bracket is in the second position and the first bracket rotates along the second direction, the first bracket drives the second bracket to move from the second position to the first position.

11. The surface cleaning device according to claim 10, characterized in that The outer circumference of the first bracket is provided with a protrusion; the inner circumference of the second bracket is formed with a spiral groove, the protrusion is arranged in the spiral groove and can slide along the spiral groove, so that the first bracket and the second bracket are matched.

12. The surface cleaning device according to claim 10, characterized in that The actuating assembly further comprises: A limiting element is provided on the second bracket and is used to limit the relative movement between the first bracket and the second bracket.

13. The surface cleaning device according to claim 12, characterized in that At least a portion of the limiting element is used to limit the protrusion of the first bracket.

14. The surface cleaning device of claim 10, wherein: The actuating assembly also includes: a damping element, which is fixed to the housing assembly and located outside the second bracket so that the damping element can apply preset damping to the second bracket; wherein the damping applied by the damping element to the second bracket needs to satisfy the requirement that the second bracket does not rotate during the process of rising or falling, or even if the second bracket rotates during the process of rising or falling, the rotation speed of the second bracket is lower than that of the first bracket.

15. The surface cleaning device of claim 14, wherein: The damping element comprises: a base, with a notch formed on a side wall of the base; and A damping portion is disposed in the notch and is used to apply damping to the second bracket.

16. The surface cleaning apparatus of claim 15, wherein: The two ends of the damping part are connected to the side walls of the notch through elastic members.

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