Surface cleaning apparatus

Abstract

The utility model provides surface cleaning equipment. The surface cleaning equipment comprises a main body part, a handle part, an electric suction source, a supply tank, a recovery tank and a ground brush assembly, the floor brush assembly is pivotally connected with the main body part, and the to-be-cleaned surface is cleaned through the floor brush assembly; the floor brush assembly comprises a shell assembly, a containing cavity is defined by the shell assembly, and a stirrer is arranged in the containing cavity. Cleaning liquid stored in the supply tank is distributed to the stirrer through the liquid distributor so as to perform wet cleaning on the surface to be cleaned through rotation of the stirrer, and sewage after the surface to be cleaned is cleaned is recycled and stored in the recycling tank; the floor brush assembly further comprises a cleaning head assembly, and the cleaning head assembly is driven to move between a rising position and a lowering position. The cleaning head assembly is farther from the surface to be cleaned in the raised position than in the lowered position; moreover, at the lowered position, the working range of the cleaning head assembly is outside the horizontal plane projection of the housing assembly.

Description

Technical Field

[0001] The present disclosure relates to a surface cleaning device, and particularly to a surface cleaning device for cleaning the surface of household floors. Background Art

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

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

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

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

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

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

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

[0009] A main body part;

[0010] A handle part detachably connected to the main body part;

[0011] An electric suction source including a vacuum motor and used for generating vacuum;

[0012] A supply tank provided in the main body part and used for storing a cleaning liquid;

[0013] A recovery tank, which is used to connect to the electric suction source, and the vacuum generated by the electric suction source can be applied to the recovery tank; and

[0014] A floor brush assembly, which is pivotally connected to the main body portion and cleans the surface to be cleaned through the floor brush assembly; the floor brush assembly includes a housing assembly, the housing assembly defines a receiving chamber, and a stirrer is arranged in the receiving chamber; the cleaning liquid stored in the supply tank is distributed to the stirrer via a liquid distributor to perform wet cleaning on the surface to be cleaned through the rotation of the stirrer, and the sewage after cleaning the surface to be cleaned is recovered and stored in the recovery tank;

[0015] Wherein, the floor brush assembly further includes a cleaning head assembly, and the cleaning head assembly is driven to be able to move between a raised position and a lowered position; the cleaning head assembly is farther away from the surface to be cleaned in the raised position than in the lowered position; moreover, in the lowered position, the working range of the cleaning head assembly is outside the horizontal plane projection of the housing assembly.

[0016] For a surface cleaning device according to at least one embodiment of the present disclosure, the floor brush assembly further includes: an actuating assembly, which is driven to be able to move between a first position and a second position so that the height of the actuating assembly relative to the bottom surface of the housing assembly changes; wherein, when the actuating assembly is located at the first position, the actuating assembly drives the cleaning head assembly and makes the cleaning head assembly located at the raised position; when the actuating assembly is located at the second position, the actuating assembly drives the cleaning head assembly and makes the cleaning head assembly located at the lowered position.

[0017] For a surface cleaning device according to at least one embodiment of the present disclosure, when the actuating assembly is located at the second position, the actuating assembly can be driven to rotate, and the actuating assembly drives the cleaning head assembly to rotate.

[0018] For a surface cleaning device according to at least one embodiment of the present disclosure, the housing assembly defines an avoidance portion, and at least a part of the actuating assembly is arranged in the avoidance portion.

[0019] For a surface cleaning device according to at least one embodiment of the present disclosure, the floor brush assembly includes: a first motor, which is arranged on the housing assembly and is used to drive the actuating assembly to lift and / or rotate.

[0020] For a surface cleaning device according to at least one embodiment of the present disclosure, the cleaning head assembly includes a rotation axis, and the rotation axis of the first motor is parallel or substantially parallel to the rotation axis of the cleaning head assembly.

[0021] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the rotation axis of the cleaning head assembly is closer to the outside of the floor brush assembly than the rotation axis of the first motor.

[0022] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the rotation axis of the first motor is inclined outwardly of the floor brush assembly in a direction from top to bottom.

[0023] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the actuation assembly includes:

[0024] A first bracket that can receive the driving force of the first motor and generate rotation; and

[0025] A second bracket that cooperates with the first bracket such that when the second bracket is in the second position and the first bracket rotates in 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 in the second direction, the first bracket drives the second bracket to move from the second position to the first position.

[0026] A surface cleaning device according to at least one embodiment of the present disclosure, wherein a convex block is provided on the outer peripheral surface of the first bracket; a spiral groove is formed on the inner peripheral surface of the second bracket, and the convex block is disposed in the spiral groove and can slide along the spiral groove so that the first bracket and the second bracket cooperate.

[0027] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the actuation assembly further includes:

[0028] A limiting element disposed on the second bracket for limiting the relative movement amount between the first bracket and the second bracket.

[0029] A surface cleaning device according to at least one embodiment of the present disclosure, wherein at least a part of the limiting element is used to limit the convex block of the first bracket.

[0030] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the actuation assembly further includes: a damping element fixed to the housing assembly and located outside the second bracket so that the damping element can apply a preset damping to the second bracket; wherein, the damping applied by the damping element to the second bracket needs to satisfy that the second bracket does not rotate during the rising or falling process, or even if the second bracket rotates during the rising or falling process, the rotation speed of the second bracket is less than that of the first bracket.

[0031] A surface cleaning device according to at least one embodiment of the present disclosure, wherein the damping element includes:

[0032] a base, with a notch formed in a side wall of the base; and

[0033] a damping portion disposed in the notch and configured to apply damping to the second bracket.

[0034] For a surface cleaning device according to at least one embodiment of the present disclosure, both ends of the damping portion are connected to side walls of the notch through elastic members.

[0035] For a surface cleaning device according to at least one embodiment of the present disclosure, the cleaning head assembly includes a cleaning disk and a cleaning element. The cleaning disk is detachably connected to an actuating assembly, and the cleaning element is connected to the cleaning disk. When the surface cleaning device is located on a surface to be cleaned, a first included angle is formed between the cleaning element and the surface to be cleaned, and the angle of the first included angle is greater than 0°.

[0036] For a surface cleaning device according to at least one embodiment of the present disclosure, the cleaning head assembly includes a cleaning disk and a cleaning element. The cleaning disk is detachably connected to an actuating assembly, and the cleaning element is connected to the cleaning disk. When the surface cleaning device is located on a surface to be cleaned, a part of the cleaning element is in contact with the surface to be cleaned.

[0037] For a surface cleaning device according to at least one embodiment of the present disclosure, the cleaning element has a circular profile, and a part of the cleaning element at least includes an outer edge of the circular profile.

[0038] For a surface cleaning device according to at least one embodiment of the present disclosure, a rotation axis of the cleaning disk does not coincide with a rotation axis of a first motor.

[0039] For a surface cleaning device according to at least one embodiment of the present disclosure, the rotation axis of the cleaning disk is farther from a middle part of the floor brush assembly than the rotation axis of the first motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. The drawings are included to provide a further understanding of the present disclosure and are incorporated in this specification and form 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 3Schematic diagram of the floor brush assembly according to an embodiment of the present disclosure.

[0044] Figure 4 Schematic diagram of the floor brush assembly from another angle according to an embodiment of the present disclosure.

[0045] Figure 5 Partial schematic diagram of the floor brush assembly according to an embodiment of the present disclosure.

[0046] Figure 6 Internal schematic diagram of the floor brush assembly according to an embodiment of the present disclosure.

[0047] Figure 7 Schematic diagram of the first motor and the actuating assembly according to an embodiment of the present disclosure.

[0048] Figure 8 Exploded schematic diagram of the first motor and the actuating assembly according to an embodiment of the present disclosure.

[0049] Figure 9 Exploded schematic diagram of the actuating assembly according to an embodiment of the present disclosure.

[0050] Figure 10 Schematic diagram of the actuating assembly according to an embodiment of the present disclosure.

[0051] Figure 11 Schematic diagram of the damping element according to an embodiment of the present disclosure.

[0052] Figure 12 Schematic diagram of the avoidance portion according to an embodiment of the present disclosure.

[0053] Figure 13 Schematic diagram of the avoidance portion according to another embodiment of the present disclosure.

[0054] Figure 14 Schematic diagram of the cleaning head assembly according to an embodiment of the present disclosure.

[0055] Figure 15 Schematic diagram of the liquid supply assembly according to an embodiment of the present disclosure.

[0056] Figure 16 Schematic diagram of the liquid supply assembly according to an embodiment of the present disclosure.

[0057] Figure 17 Schematic diagram of the valve stem and the valve cover according to an embodiment of the present disclosure.

[0058] Figure 18Schematic cross-sectional structure diagram of a valve component according to an embodiment of the present disclosure.

[0059] Figure 19 Schematic structure diagram of a first sensor component according to an embodiment of the present disclosure.

[0060] Figure 20 Is Figure 19 Schematic enlarged view of part A of

[0061] Figure 21 Schematic structure diagram of a scraping component and a suction head according to an embodiment of the present disclosure.

[0062] Figure 22 Schematic structure diagram of a scraping component and a suction head from another angle according to an embodiment of the present disclosure.

[0063] Figure 23 Schematic structure diagram of a scraping component according to an embodiment of the present disclosure.

[0064] Figure 24 Schematic structure diagram of a scraping component from another angle according to an embodiment of the present disclosure.

[0065] Figure 25 Schematic structure diagram of a suction head according to an embodiment of the present disclosure.

[0066] Figure 26 Schematic structure diagram of a floor brush component from one angle according to an embodiment of the present disclosure.

[0067] Figure 27 Is Figure 26 Schematic enlarged structure diagram of

[0068] Figure 28 Schematic structure diagram of a floor brush component from another angle according to an embodiment of the present disclosure.

[0069] Figure 29 Is Figure 28 Schematic enlarged view of part C of

[0070] Figure 30 Schematic structure diagram of a floor brush component from one angle according to an embodiment of the present disclosure.

[0071] Figure 31 Schematic structure diagram of a floor brush component from yet another angle according to an embodiment of the present disclosure. Detailed implementation manners

[0072] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for ease of description, only parts related to the present disclosure are shown in the drawings.

[0073] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0074] Unless otherwise specified, the exemplary embodiments / examples shown will be understood to provide 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, without departing from the technical concept of the present disclosure, the features of various embodiments / examples can be additionally combined, separated, interchanged, and / or rearranged.

[0075] In the drawings, cross-hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated otherwise, the presence or absence of cross-hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be performed in an order different from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. Additionally, the same reference numerals denote the same components.

[0076] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be an intermediate component. However, when the component is referred to as being "directly on" another component, "directly connected to" or "directly coupled to" another component, there is no intermediate component. For this reason, the term "connection" can refer to a physical connection, an electrical connection, etc., and can have or not have an intermediate component.

[0077] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on top of", "higher", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (other) component as shown in the drawings. In addition to the orientation depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacturing. For example, if the device in the drawing is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both "above" and "below" orientations. Additionally, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0078] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. Additionally, when the terms "comprise" and / or "include" and their variants are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but there is no exclusion of the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms and not as terms of degree, and thus they are used to explain the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.

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

[0080] As Figure 1 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 be able to clean a surface to be cleaned (such as a floor surface, etc.). Preferably, the surface cleaning device is able to perform wet cleaning on the surface to be cleaned, that is, it is formed as a wet surface cleaning device, and the liquid after cleaning the surface to be cleaned is recycled to the surface cleaning device. Unless otherwise specified in the present disclosure, the surface to be cleaned is disposed substantially horizontally, that is, it is formed as a horizontal plane.

[0082] The base station 900 is configured for the surface cleaning device to dock and is able to provide electrical energy to the surface cleaning device to charge the 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 washer, those skilled in the art should understand that the term "surface cleaning device" can be used herein to describe various types of household cleaning devices, including autonomous processing devices configured to provide some semi-autonomous or autonomous capabilities. Examples of household cleaning devices include: floor washers, vacuum cleaners with mopping functions, floor scrubbing robots, window cleaning robots, etc.

[0084] Referring again Figure 1 , in the present disclosure, the surface cleaning system is designed to support the surface cleaning device for cleaning and maintenance. In some examples, the surface cleaning device can be configured to perform a semi-autonomous or autonomous 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 arranged on or inside the housing of the surface cleaning device. The controller can be connected to or integrated with a connecting component, which is configured to collect data from the sensors. In some examples, the surface cleaning device can identify the dirtiness of the floor during a cleaning cycle through sensors. This identification can be based on sensor information and the usage time of the agitator 630.

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

[0086] The base station 900 can be configured to execute a self-cleaning cycle and a heat drying cycle. Thus, when the surface cleaning device is received and supported on the base station 900, the corresponding cleaning and maintenance operations start to be executed.

[0087] In some embodiments, various mechanisms and algorithms can be adopted to determine the maintenance mode of the agitator 630 of the surface cleaning device to adapt to the current working conditions. These working conditions can be defined by the user or identified through occupancy data related to the environment used by the surface cleaning device, such as the dirtiness records of the floor to be cleaned, etc. Through the automatic cleaning mode selection by these mechanisms and algorithms, the power consumption of the surface cleaning device can be reduced, thereby improving its operation efficiency.

[0088] As Figure 1 shown, in some embodiments, the surface cleaning system can also 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 can include a data server, a cloud server, a server related to an automation service provider, a proxy server, a mail server, a network server, an application server, a database server, a communication server, a home server, a mobile server, or any combination thereof.

[0089] For example, the surface cleaning device can upload data (such as notifications) to an application hosted by the server 1200 for publishing data related to the autonomous functions performed by the surface cleaning device. For example, the user can view the data published by the surface cleaning device through an application running on the remote control device 1300 to view the functions performed by the surface cleaning device. The server 1200 can 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 can include operational information such as location information, control instructions, consumable information (such as agitator 630 information, filter information), water full information, dirt information, battery information, etc., as well as other information, instructions, or commands related to the maintenance operations of the surface cleaning device (for example, the occupancy time of the self-cleaning cycle, the occupancy time of the heat drying cycle, the charging power during the maintenance of the surface cleaning device by the base station 900, 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 (for example, using the 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 can include an uplink (UL) transmission from the surface cleaning device to the access point 1100 or the server 1200, and / or a downlink (DL) transmission from the access point 1100 or the server 1200 to the surface cleaning device. The downlink transmission can also be referred to as a forward link transmission, while the uplink transmission can also be referred to as a reverse link transmission. The wireless communication link 1500 can transmit two-way communication and / or one-way communication. The wireless communication link 1500 can include one or more connections, including but not limited to Wi-Fi, Bluetooth, peer-to-peer, LAN, wireless local area network (WLAN), Ethernet, fiber optic, and / or other connection types related to the wireless communication system.

[0093] In some examples, the environment 2000 can be part of a structure, such as a residential or commercial building. For example, the environment 2000 can be a home, particularly it can be a room, including one or more different floor materials and objects spread 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) process of collecting surface dirt particles within the above-mentioned geographical 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 a high speed and adheres to a large amount of dirt. To avoid causing secondary pollution, it is necessary to keep the real-time self-cleaning of the agitator 630 in the structural design. Usually, the cover part 620 is used to shield and collect the dirt and liquid particles thrown out by the centrifugal force when the agitator 630 rotates at a high speed, and the dirt adhered to the surface of the agitator 630 is scraped off in real time by arranging a scraping strip interfering with it in the accommodating chamber and sucked away through the suction nozzle 640. Due to the design reasons in terms of structure, the agitator 630 cannot be independently arranged away from the cover part and the accommodating chamber. During the cleaning operation of the wet household surface cleaning device, there will be cleaning areas that are difficult to reach, such as the connection between the ground and the wall. To ensure the cleaning efficiency, the wet household surface cleaning device needs to continuously design space for the agitator 630 to clean up to the edge. However, due to the above design reasons, it is very difficult for the agitator 630 itself to achieve the expected edge cleaning effect. Often when the housing of the surface cleaning device reaches the wall, the edge of the agitator 630 still has not reached the target cleaning area and cannot clean the target cleaning area.

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

[0096] As Figure 2 shown, the surface cleaning device of the present disclosure is configured to be able to perform wet cleaning on the surface to be cleaned, wherein the surface to be cleaned can be a floor surface, preferably a household floor surface. At the same time, after the surface cleaning device performs wet cleaning on the floor surface, the dirt and liquid (sewage) after cleaning the surface to be cleaned can be recycled to the surface cleaning device.

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

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

[0099] More preferably, user interaction buttons may be arranged on the handle part 100. The user can control the surface cleaning device by triggering the user interaction buttons, such as controlling the start and stop of the surface cleaning device and controlling the liquid supply speed of the surface cleaning device and the suction power of the electric suction source, etc., so as to make the user experience of the surface cleaning device better.

[0100] In one example, the main body 200 is formed as the main body of a surface cleaning device; the main body 200 is pivotally connected to the floor brush assembly 600 via the connecting portion 500; moreover, 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 they 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 thicknesses of the supply tank 300 and the recovery tank 400 are set to be less than the widths, which can ensure sufficient capacity and enable the height of the main body 200 to be less than a predetermined height, such as 120 mm, after it lies flat.

[0102] The supply tank 300 has a flat shape and includes a cavity formed by a plurality of wall surfaces for accommodating the cleaning liquid, and the capacity of the supply tank 300 can be set to 500 mL or the like. Additionally, the supply tank 300 can include a handle through which the user can install or remove the supply tank 300.

[0103] The supply tank 300 is used to store the cleaning liquid to be dispensed. Correspondingly, the supply tank 300 can be connected to a liquid dispenser (not shown in the figure), so that the cleaning liquid in the supply tank 300 can be pressurized via the liquid dispenser and then provided to the floor brush assembly 600 or to the surface to be cleaned near the floor brush assembly 600, thereby enabling wet cleaning of the surface to be cleaned with the cleaning liquid.

[0104] In a preferred embodiment, the liquid dispenser can include a liquid supply pump that can extract the cleaning liquid from the supply tank 300, pressurize the cleaning liquid, and then provide it to the liquid outlet component, and the pressurized cleaning liquid is provided 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 their mixtures, etc. Additionally, the cleaning liquid can be a normal-temperature cleaning liquid or a high-temperature cleaning liquid.

[0106] The main body 200 is formed with a receiving space, and the recovery tank 400 is detachably provided in the main body 200 and located within the receiving space, so that when there is a large amount of liquid stored in the recovery tank 400, the user can remove the recovery tank 400, pour out the internal sewage, and clean up the solid waste. At this time, a part of the outer surface of the recovery tank 400 forms a part of the outer surface of the surface cleaning device.

[0107] To recover the liquid after cleaning the surface to be cleaned, the recovery tank 400 can be connected to the floor brush assembly 600 through the recovery pipeline 401. Accordingly, the mixture of dirt, sewage and gas (solid-liquid mixture) can be recovered to the recovery tank 400 via the recovery pipeline 401. In one example, a solid-liquid separator can be provided inside the recovery tank 400 to separate the mixture of solids and liquids recovered by the surface cleaning device after cleaning the surface to be cleaned in the solid-liquid separator, so that the separated solids are retained in the solid-liquid separator and the separated liquids are stored inside the recovery tank 400.

[0108] In the present disclosure, the surface cleaning device further includes an electric suction source (not shown in the figure). The electric suction source can include a vacuum motor, whereby a vacuum (negative pressure) can be generated through the electric suction source. At the same time, the electric suction source can be connected to the recovery tank 400 to provide the negative pressure to the recovery tank 400, thereby realizing the forced flow of gas and sewage in the recovery pipeline 401. In the present disclosure, the gas discharged from the electric suction source can flow to the outside of the surface cleaning device through the gaps on the partial outer surface of the surface cleaning device.

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

[0110] In another example, the connecting part 500 can include a multi-axis joint, and the multi-axis joint can couple the main body part 200 with the floor brush assembly 600 to allow the main body part 200 to rotate relative to the floor brush assembly 600 along the first direction and the second direction.

[0111] The main body part 200 can be pivoted to an upright position (which can also be called a storage position) through the connecting part 500. In this position, the included angle between the main body part 200 and the surface of the floor brush assembly 600 (or the placement ground) is 80°-90°, preferably about 80°. In this position, the surface cleaning device is in a self-supporting posture (also called an upright posture), that is, the main body part 200 etc. can be supported by the floor brush assembly 600, and the upright posture can be realized without relying on other objects.

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

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

[0114] The base portion 610 and the cover portion 620 of the present disclosure may integrally form a housing assembly of the floor brush assembly 600. Correspondingly, the housing assembly is pivotally connected to the main body portion 200 through a connecting portion 500. Moreover, the housing assembly is arranged to be suitable for moving on the floor surface to be cleaned. For example, two rolling wheels may be provided on the base portion 610 of the housing assembly, and the housing assembly is moved on the surface to be cleaned by the rolling of the rolling wheels on the surface to be cleaned.

[0115] The housing assembly defines an accommodation chamber. Specifically, the accommodation chamber is located in the front half of the floor brush assembly 600 (with the moving direction of the surface cleaning device when cleaning the surface to be cleaned as the front) so as to accommodate a first agitator 630 in the accommodation chamber. Correspondingly, the first agitator 630 is also located in the front half of the floor brush assembly 600. In a specific embodiment, the front surface of the base portion 610 and a part of the lower surface of the cover portion 620 are both formed as at least part of the side walls of the accommodation chamber; that is to say, the accommodation chamber of the present disclosure is jointly 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 arranged on the base portion 610 and can be driven to rotate; that is to say, when the surface cleaning device is performing a cleaning operation or a self-cleaning operation, the agitator 630 can be driven by a motor to rotate. Thus, the agitator 630 can be in frictional contact with the surface to be cleaned, and the cleaning of the surface to be cleaned can be achieved. During the process of the agitator 630 being in frictional contact with the surface to be cleaned, a cleaning liquid can be supplied to the agitator 630, thereby realizing the 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. At this time, the agitator 630 of the floor brush assembly 600 may be a crawler-type cleaning member, etc. In the present disclosure, the drum-type cleaning member is taken as an example for illustration.

[0118] In one embodiment, the motor can be disposed within 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 can be disposed within the agitator 630 and be capable of driving the agitator 630 to rotate; in the present disclosure, the agitator 630 can rotate along a first axis; more preferably, the first axis can be a horizontal straight line in the transverse direction, and the transverse direction is the direction perpendicular to the front-back direction; the front-back direction is the moving direction 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 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 so that the cleaning liquid on the agitator 630 is distributed more evenly.

[0120] As Figure 5 and Figure 6 shown, a suction nozzle 640 is formed on the base portion 610. In the present disclosure, the suction nozzle 640 is disposed adjacent to the agitator 630 and is located behind the agitator 630. In the present disclosure, the suction nozzle 640 is connected to the recovery pipeline 401 and forms the starting point of the recovery path.

[0121] As Figure 4 shown, the cleaning head assembly 650 of the present disclosure is driven to be capable of moving between a raised position and a lowered position; the cleaning head assembly 650 is farther from the surface to be cleaned in the raised position than in the lowered position; moreover, in the lowered position, the working range of the cleaning head assembly 650 is outside the horizontal plane projection of the housing assembly; that is to say, the cleaning head assembly 650 of the present disclosure can clean an area outside the horizontal plane projection of the housing assembly.

[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 does not always contact the surface to be cleaned (such as a horizontal plane), but selectively contacts the surface to be cleaned. For example, when the surface cleaning device is cleaning the 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 can be in the lowered position. At this 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 moves 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 the raised position. In this raised position, the cleaning head assembly 650 is in a non-working state. At this time, no cleaning liquid can be supplied to the cleaning head assembly 650, and the cleaning head assembly 650 can also not be driven to rotate.

[0123] In a preferred embodiment, the cleaning head assembly 650 of the present disclosure is disposed adjacent to the right side wall 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. Among them, the first motor 660 may be disposed in the housing assembly and located inside the housing assembly, whereby 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 speed reducer and output power outward through the output shaft of the speed reducer. In the present disclosure, the speed reducer may be a gear speed reducer, etc., and through the setting of the gear speed reducer, the rotation axis of the first motor 660 can be different from the rotation axis of the output shaft of the speed reducer.

[0125] In a preferred embodiment, the rotation axis of the first motor 660 may be located in a certain vertical plane, and this vertical plane is perpendicular to the front-rear direction, which is the movement direction of the floor brush assembly 600 on the surface to be cleaned when the surface cleaning device cleans the surface to be cleaned. In this vertical plane, there is a preset angle between the rotation axis of the first motor 660 and the vertical straight line.

[0126] Similarly, the rotation axis of the first motor 660 may be arranged parallel or substantially parallel to the rotation axis of the output shaft of the speed reducer. Thus, the speed reducer of the present disclosure can have a relatively simple structure.

[0127] The first motor 660 is drivingly connected to the actuating assembly 670, whereby the first motor 660 can drive the actuating assembly 670 to lift and / or rotate.

[0128] Figure 7 is a schematic structural diagram of the first motor 660 and the actuating assembly according to an embodiment of the present disclosure. Figure 8 is an exploded structural diagram of the first motor 660 and the actuating assembly according to an embodiment of the present disclosure.

[0129] As Figure 7 and Figure 8 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 height of the actuating assembly 670 relative to the bottom surface of the housing assembly is changed; wherein, when the actuating assembly 670 is in the first position, the actuating assembly 670 drives the cleaning head assembly 650 and makes the cleaning head assembly 650 in the raised position; when the actuating assembly 670 is in the second position, the actuating assembly 670 drives the cleaning head assembly 650 and makes the cleaning head assembly 650 in the lowered position.

[0130] Meanwhile, when the actuating assembly 670 is in the second position, the actuating assembly 670 can be driven to rotate, and the actuating assembly 670 drives the cleaning head assembly 650 to rotate. Similarly, when the actuating assembly 670 is in the first position, the actuating assembly 670 can also be driven to rotate, and at the same time, the actuating assembly 670 can drive the cleaning head assembly 650 to rotate. Among them, the cleaning head assembly 650 rotates in opposite directions in the raising direction and the lowering direction.

[0131] Figure 9 is an exploded schematic view of an actuating assembly according to an embodiment of the present disclosure.

[0132] In a specific embodiment, as Figure 9 shown, the actuating assembly 670 of the present disclosure may include components such as a first bracket 671, a second bracket 672, and a limiting element 673.

[0133] Among them, the first bracket 671 is arranged to receive the driving force of the first motor 660. That is to say, the first bracket 671 can be fixed to the output shaft of the first motor 660 or the output shaft of the speed reducer. Thus, the position of the first bracket 671 in the height direction does not change. At the same time, the first bracket 671 can be driven by the first motor 660 and rotate.

[0134] Specifically, the first bracket 671 of the present disclosure is integrally cylindrical, and a non-circular hole for connecting with the output shaft of the first motor 660 or the output shaft of the speed reducer is provided at its upper end. In actual use, the output shaft of the first motor 660 or the output shaft of the speed reducer can be inserted into the non-circular hole, that is, the transmission connection between the first motor 660 and the first bracket 671 is realized.

[0135] In addition, a convex block 671A is provided on the outer peripheral surface of the first bracket 671, and the convex block 671A is provided near the lower end of the first bracket 671.

[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 in the first direction, the first bracket 671 drives the second bracket 672 to rotate; when the second bracket 672 is in the second position and the first bracket 671 rotates in the second direction, the first bracket 671 drives the second bracket 672 to move from the second position to the first position.

[0137] Specifically, a spiral groove 672A is formed on the inner surface of the second bracket 672, and the convex block 671A is arranged in the spiral groove 672A and can slide along the spiral groove 672A so that the first bracket 671 and the second bracket 672 cooperate.

[0138] Specifically, as Figure 7As shown, the second bracket 672 is in the first position at this time. At this first position, if the first bracket 671 is driven and rotated clockwise (viewed from the top-down direction, the same below), the bump 671A of the first bracket 671 will be restricted in position by the limiting block at the lower end of the spiral groove 672A of the second bracket 672, and the second bracket 672 will be rotated clockwise synchronously with the first bracket 671. At this time, although the cleaning head assembly 650 is not in contact with the surface to be cleaned, however, when the cleaning head assembly 650 rotates, cleaning liquid can be provided to the cleaning head assembly 650, and the cleaning head assembly 650 can be wetted and be in a state capable of cleaning the surface to be cleaned.

[0139] At this first position, if the first bracket 671 is driven and rotated counterclockwise (viewed from the top-down direction, the same below), the bump 671A of the first bracket 671 will slide within the spiral groove 672A of the second bracket 672. At the same time, since the position of the first bracket 671 remains unchanged in the vertical direction, the second bracket 672 will be pushed and move downward. Next, when the second bracket 672 gradually descends and reaches the second position, the bump 671A will be restricted in position by the restricting 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 at least a part of the cleaning head assembly 650 will be in contact with the surface to be cleaned when the second bracket 672 is in the second position, when the second bracket 672 rotates, the cleaning head assembly 650 can be driven and rotated by the second bracket 672, thereby realizing wet cleaning of the surface to be cleaned. In particular, the cleaning head assembly 650 can clean positions such as the corner of a wall, improving the cleaning effect of the surface cleaning device.

[0141] In the present disclosure, the restricting element 673 is arranged on the second bracket 672 and is used to restrict the relative movement amount between the first bracket 671 and the second bracket 672. That is to say, the restricting element 673 of the present disclosure can be fixed together with the second bracket 672, and at least a part of the restricting element 673 is used to limit the bump 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 limiting block, and the bump 671A of the first bracket 671 is prevented from detaching from the lower end of the spiral groove 672A through this limiting block. Moreover, the restricting 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 restricting element 673, so that the bump 671A of the first bracket 671 also does not detach from the upper end of the spiral groove 672A.

[0143] During the assembly of the actuating assembly, the bump of the first bracket 671 can be placed in the spiral groove 672A first, and then the limiting element 673 is installed at the upper end of the second bracket 672, thus realizing the installation of the actuating assembly, and the installation process is convenient.

[0144] In a preferred embodiment, the second bracket 672 further includes a protruding portion 672B extending upward, and the protruding portion 672B can be inserted into the first bracket 671 from the lower end; thus, when the second bracket 672 is in the first position, at least a part of the protruding portion 672B can be disposed inside the first bracket 671; meanwhile, the cleaning head assembly 650 can be fixed to the protruding portion 672B, that is, the upper end of the cleaning head assembly 650 can be inserted into and fixed inside the protruding portion 672B. Thus, the side cleaning module composed of the first motor 660, the actuating assembly 670, and the cleaning head assembly 650 of the present disclosure has a smaller height.

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

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

[0147] As Figure 10 and Figure 11 shown, the actuating assembly of the present disclosure may include a damping element 674, and the damping element 674 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 entirely located below the base portion 610. Correspondingly, the output shaft of the first motor 660 or the output shaft of the reducer can pass through the base portion 610 and be in transmission connection 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 in a cylindrical shape and sleeved outside the second bracket 672. Thus, the damping element 674 can apply a preset damping to the second bracket 672.

[0149] Specifically, the damping applied by the damping element 674 to the second bracket 672 needs to satisfy that the second bracket 672 does not rotate during the ascending or descending process, or even if the second bracket 672 rotates during the ascending or descending process, the rotation speed of the second bracket 672 is less than that of the first bracket 671. In other words, during the ascending or descending process of the second bracket 672, the second bracket 672 cannot rotate at the same speed as the first bracket 671, otherwise, the second bracket 672 will not be able to perform the ascending or descending action.

[0150] In a specific embodiment, as Figure 11 shown, the damping element 674 includes a base 674A. The base 674A is a cylindrical component, and a notch is formed on the side wall of the base 674A. A damping portion 674B is arranged in the notch, and the damping portion 674B 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 wall of the notch through elastic members 674C. Thus, when the second bracket 672 is not arranged inside the damping element 674, at least part of the damping portion 674B can be located inside the base 674A. Correspondingly, when the second bracket 672 is installed inside the damping element 674, the damping element 674 can apply a positive pressure to the second bracket 672, and a frictional force is formed between the damping element 674 and the second bracket 672 through the positive pressure. Further, the damping effect of the damping element 674 on the second bracket 672 is formed through the frictional force.

[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 such that when the second bracket 672 is in the first position or the second position and the second bracket 672 does not perform the ascending or descending action, the first bracket 671 can drive the second bracket 672 to rotate.

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

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

[0155] As Figure 12 shown, the housing assembly of the present disclosure limits the avoidance portion 611, and at least part of the actuating assembly 670 is arranged in the avoidance portion 611.

[0156] In one embodiment, the lower surface of the base portion 610 is formed to be substantially planar, that is, the base portion 610 has a substantially planar bottom wall. Wherein, at least a part of the bottom wall of the base portion 610 is recessed upward to form an avoidance portion 611. Thus, the avoidance portion 611 includes an avoidance space, and the avoidance portion 611 includes an avoidance side wall 611A, an avoidance top wall 611B, and an avoidance edge 611C; the avoidance side wall 611A and the avoidance top wall 611B can enclose the above-mentioned avoidance space, and the avoidance edge 611C is the peripheral area of the avoidance space.

[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 height of the cleaning head assembly 650 changes 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 can be located in a certain vertical plane, and at least a part of the avoidance portion 611 extends on the side wall. That is to say, in the present disclosure, even when the cleaning head assembly 650 is in the raised position, at least a part of the cleaning head assembly 650 can still be located outside the projection of the floor brush assembly 600 on the horizontal plane. Based on this, an area for avoiding the cleaning head assembly 650 needs to be reserved on the side wall of the base portion 610, and at least a part of the avoidance portion 611 can extend on the side wall of the base portion 610.

[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. Thus, the avoidance edge 611C can be substantially parallel to the inclined cleaning head assembly 650 to facilitate accommodating at least a part of the cleaning head assembly 650 in the avoidance portion 611.

[0160] More preferably, at least a part of the avoidance side wall 611A of the avoidance portion 611 is formed to be arc-shaped. Accordingly, the arc-shaped avoidance side wall 611A can better accommodate the disc-shaped cleaning head assembly 650.

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

[0162] As Figure 14 shown, the cleaning head assembly 650 of the present disclosure may include: a cleaning disc 651 and a cleaning element 652; wherein, the cleaning disc 651 can be detachably disposed on the actuating assembly 670, for example, detachably disposed on the second bracket 672. Thus, the cleaning head assembly 650 of the present disclosure can be removed from the floor brush assembly 600.

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

[0164] The cleaning element 652 can be fixed to the cleaning disk 651. For example, the cleaning element 652 can be bonded to the cleaning disk 651 by Velcro. Thus, when the cleaning disk 651 rotates, it can drive the cleaning element 652 to rotate and make the cleaning element 652 in frictional contact with the surface to be cleaned, realizing the scrubbing of the surface to be cleaned.

[0165] In the present disclosure, the cleaning element 652 can be prepared from materials such as flannelette and can be formed into an annular shape. Moreover, a rubber-coated portion 653 is formed on the outer side of the cleaning disk 651, and the rubber-coated portion 653 can be located above the cleaning element 652. In the present disclosure, a plurality of hollow openings are formed in the rubber-coated portion 652. When the cleaning liquid is provided to the hollow opening positions of the rubber-coated portion 653, the cleaning liquid can flow to the cleaning element 652 under the action of gravity, realizing the wetting of the cleaning element 652.

[0166] The cleaning disk 651 and the cleaning element 652 of the present disclosure can be formed into a circular structure, or can be formed into a semi-circular 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, and the surface to be cleaned is generally formed into a horizontal plane, there is a first included angle between the cleaning element 652 and the surface to be cleaned, and the angle of the first included 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 this time, at least a part of the cleaning element 652 of the cleaning head assembly 650 can be in contact with the surface to be cleaned. Thus, through the rotation of the cleaning element 652, the frictional contact between the cleaning element 652 and the surface to be cleaned is realized, and the cleaning of the surface to be cleaned is realized.

[0168] Preferably, the cleaning element 652 has a circular contour. Along the transverse direction of the floor brush assembly 600, the cleaning element 652 has a first part located outside the housing assembly of the floor brush assembly 600 and a second part located inside the housing assembly of the floor brush assembly 600. Among them, the fact that the cleaning element 652 has a first part located outside the housing assembly of the floor brush assembly 600 means that the projection of the first part of the cleaning element 652 on the surface to be cleaned is located outside the projection of the housing assembly on the surface to be cleaned.

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

[0170] Correspondingly, when the actuating assembly 670 is in the first position, the cleaning element 652 is entirely away from the surface to be cleaned and does not contact the surface to be cleaned. At this time, the second 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 disk 651 has a rotation axis, and the cleaning element 652 has a rotation axis. The rotation axis of the cleaning disk 651 is the same as the rotation axis of the cleaning element 652, that is, the cleaning head assembly 650 has only one rotation axis.

[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 speed reducer. Correspondingly, the rotation axis of the cleaning head assembly 650 is parallel to the rotation axis of the first motor 660. Of course, due to the different structures of the speed reducer, the rotation axis of the first motor 660 can also be non-parallel to the rotation axis of the cleaning head assembly 650.

[0173] In a preferred embodiment, the rotation axis of the cleaning head assembly 650 is further 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 arranged as far as possible at a position away from the edge of the floor brush assembly 600, so as to leave enough space for installing the cleaning head assembly 650.

[0174] In the present disclosure, the rotation axis of the cleaning head assembly 650 can be located in a certain vertical plane, and this vertical plane is perpendicular to the front-back direction. The front-back direction is the movement direction of the floor brush assembly 600 on the surface to be cleaned when the surface cleaning device cleans the surface to be cleaned. In this vertical plane, there is an included angle with 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 inclinedly arranged. Preferably, the rotation axis of the cleaning head assembly 650 can also be parallel or substantially parallel to the rotation axis of the first motor 660.

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

[0176] As Figures 15 to 18 shown, the floor brush assembly 600 of the present disclosure further includes a liquid supply assembly 680, and the cleaning liquid is provided to the cleaning head assembly 650 through 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 through 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. When the valve device 681 is in the open state, the cleaning liquid can be provided to the cleaning head assembly 650 through the liquid supply assembly 680. When the valve device 681 is in the closed state, the liquid supply assembly 680 cannot provide the cleaning liquid to the cleaning head assembly 650.

[0179] In another embodiment, since the cleaning head assembly 650 can be fixedly connected to the second bracket 672 of the actuating assembly 670, correspondingly, it can also be considered that the valve device 681 can be driven by the cleaning head assembly 650 to be in an open state or a closed state.

[0180] As Figure 17 and Figure 18 shown, the valve device 681 of the present disclosure includes a valve body 681A, a valve stem 681B and a valve cover 681C; wherein, the valve body 681A is formed with a liquid flow path, and the liquid flow path can be arranged along the axial direction of the valve body 681A; at the same time, the valve body 681A further includes an inlet pipeline and an outlet pipeline, and both the inlet pipeline and the outlet pipeline are communicated with the liquid flow path of the valve body 681A; wherein, the inlet pipeline can be connected to the liquid supply pump, and the outlet pipeline can be connected to the water spray 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 at the open position, the valve device 681 can be in an open state; correspondingly, when the valve stem 681B is located at the closed position, the valve device 681 can be in a closed state.

[0182] In the present disclosure, the valve stem 681B can be driven by the actuating assembly 670 to move between an open position and a 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] As Figure 18 shown, the valve device 681 is in the closed state, that is, the valve stem 681B is located at the closed position, and at this time, the water inlet pipe and the water outlet pipe are not connected; those skilled in the art should know that the water inlet pipe can be any one of the two pipes, and correspondingly, the water outlet pipe is the other of the two pipes. In a preferred embodiment, the water inlet pipe is located above the water outlet pipe, and thus, the water outlet pipe 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 at the open position and connect the water inlet pipe and the water outlet pipe.

[0185] In the present disclosure, an outer flange is formed at the lower end of the second bracket 672 of the actuating assembly 670, and the lower end of the valve stem 681B can contact the upper surface of the outer flange of the second bracket 672. Thus, when the second bracket 672 rotates, the lower end of the valve stem 681B can slide in contact with the upper surface of the outer flange of the second bracket 672, so that the valve stem 681B does not affect the rotation of the second bracket 672 of the actuating assembly 670. Correspondingly, when the second bracket 672 moves upward, that is, when the second bracket 672 moves from the second position to the first position, the valve stem 681B is driven to move upward, and correspondingly, the valve stem 681B can move from the open position to the closed position. When the second bracket 672 moves downward, the valve stem 681B will be allowed to move downward, and correspondingly, under the action of the restoring force provided by the spring 681D, the valve stem 681B can move from the closed position to the open position.

[0186] Referring again to Figure 18 , in the present disclosure, the valve stem 681B includes a first sealing portion 681B1 and a second sealing portion 681B2. One end of the spring can abut against the valve cover, and the other end of the spring can abut against the second sealing portion 681B2. Both the first sealing portion 681B1 and the second sealing portion 681B2 can be in sealing contact with the inner wall of the liquid flow path of the valve body 681A.

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

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

[0190] Figure 19 It is a schematic structural diagram of the first sensor assembly 690 according to an embodiment of the present disclosure. Figure 20 is Figure 19 An enlarged schematic diagram of part A of

[0191] As Figure 19 and Figure 20 shown, the floor brush assembly 600 of the present disclosure further includes a first sensor assembly 690, and the first sensor assembly 690 is configured to at least generate usage data indicating that the surface cleaning device is approaching a wall. Among them, the first sensor assembly 690 can be disposed on the housing assembly of the floor brush assembly 600, for example, on the cover portion 620 of the housing assembly; of course, the first sensor assembly 690 can also be disposed on the base portion 610 of the housing assembly. More preferably, the first sensor assembly 690 can be located directly above the cleaning head assembly 650.

[0192] The first sensor assembly 690 can be a proximity sensor, for example, a distance sensor, and the distance sensor 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 walls of the floor brush assembly 600 are disposed substantially vertically. Specifically, the side walls of the housing assembly of the floor brush assembly 600 are formed as substantially vertical planes, and the substantially vertical planes are 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 side walls disposed substantially vertically. Accordingly, the first sensor assembly 690 is disposed on the substantially vertical side wall, whereby the distance between the side wall of the floor brush assembly 600 and a wall (external object) can be accurately detected by the first sensor assembly 690.

[0194] In the present disclosure, when the distance sensor is provided as one, it can be disposed on the side wall on the right side of the advancing direction of the floor brush assembly 600. That is to say, when the surface cleaning device is actually used, due to the particularity of the user's walking trajectory, generally the right side of the floor brush assembly 600 is prone to contact with a wall or the like. Accordingly, disposing the distance sensor on the right side wall can enable the distance sensor to more easily detect the distance between the floor brush assembly 600 and the wall, having a better usage effect. On the other hand, the distance sensor can also be provided as two. Accordingly, the distance sensor can be disposed at both the left and right side walls of the advancing direction of the floor brush assembly 600. Thus, the distance between the wall surfaces on both sides of the floor brush assembly 600 and the floor brush assembly 600 can be sensed by the distance sensor.

[0195] In a preferred embodiment, the distance sensor includes an optical sensor, an infrared sensor, a laser sensor, etc. At this time, the distance sensor may include a transmitting unit 691 and a receiving unit 692; the transmitting unit 691 can emit an optical signal, an infrared signal or a laser signal; the receiving unit 692 can receive the echo signal of the optical signal, the infrared signal or the laser signal, so as to obtain the distance between the distance sensor and the wall according to the time difference between the optical signal, the infrared signal or the laser signal emitted 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, through holes are formed in the cover portion 620, and both the transmitted signal and the echo signal of the distance sensor can be transmitted through the through holes.

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

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

[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 located at the raised position, the power supply to 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, it can make the cleaning head assembly 650 descend, that is, the cleaning head assembly 650 can descend from the raised position to the lowered position. At this lowered position, the cleaning head assembly 650 can clean the surface to be cleaned; when the cleaning head assembly 650 is located at 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] With a similar working process, the controller of the present disclosure can also increase and decrease the output power of the first motor 660. Specifically, when the first distance is greater than a preset distance threshold, if the first motor 660 is in a working state, the output power of the first motor 660 can be decreased. When the first distance is less than or equal to the preset distance threshold, over time, the output power of the first motor 660 can be increased, 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 rotational speed 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 rotational speed of the first motor 660 can be decreased. When the first distance is less than or equal to the preset distance threshold, over time, the rotational speed of the first motor 660 can be increased, 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 increase and decrease the suction power of the electric suction source. Specifically, when the first distance is greater than a preset distance threshold and at this time the cleaning head assembly 650 is in a non-working state, the suction power of the electric suction source can be decreased. On the contrary, when the first distance is greater than a preset distance threshold and the cleaning head assembly 650 is in a working state, the controller increases the suction power of the electric suction source, so that both the cleaning head assembly 650 and the agitator 630 can obtain the negative pressure sufficient 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 operating cycle of the first motor 660. For example, a sensor for detecting the volume of the cleaning liquid can be provided in the supply tank 300. Thus, the controller can obtain the amount of cleaning liquid in real time and can obtain the consumption rate of the cleaning liquid accordingly.

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

[0205] The controller controls the liquid dispenser and decreases the power of the liquid dispenser when the amount of cleaning liquid used in each operating cycle of the first motor 660 is excessive. That is, during the operation of the first motor 660, when the consumption rate of the cleaning liquid is greater than or equal to a preset first speed threshold, the amount of cleaning liquid used in each operating cycle of the first motor 660 will be excessive. At this time, the power of the liquid dispenser can be decreased to reduce the consumption rate of the cleaning liquid.

[0206] Similarly, when the amount of cleaning liquid used in each operating cycle of the first motor 660 is too small, increase the power of the liquid dispenser; that is, during the operation of the first motor 660, when the consumption rate of the cleaning liquid is less than or equal to a preset second speed threshold, the amount of cleaning liquid used in each operating cycle of the first motor 660 will be too small. At this time, the power of the liquid dispenser can be increased to increase the consumption rate of the cleaning liquid. Thus, during the use of the surface cleaning device, an appropriate amount of cleaning liquid can be provided to the surface to be cleaned, improving the cleaning effect of the surface to be cleaned.

[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 for opening or stopping the supply of cleaning liquid to the cleaning head assembly 650; wherein, the controller is configured to control the solenoid valve and stop supplying cleaning liquid to the cleaning head assembly 650 when the amount of cleaning liquid used in each operating cycle of the first motor 660 is too large; and / or, open the supply of cleaning liquid to the cleaning head assembly 650 when the amount of cleaning liquid used in each operating cycle of the first motor 660 is too small.

[0209] The solenoid valve of the present disclosure and the water spray head 682 together form a liquid distribution assembly in another embodiment, that is, the valve device 681 of the present disclosure can be replaced by a solenoid valve to form different technical solutions.

[0210] In the present disclosure, the controller is used to process the usage data of the first motor 660 and obtain a notification for maintaining the cleaning head assembly 650 based on the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may further include a current sensor for detecting the current flowing through the first motor 660; thus, when the current flowing through the first motor 660 is greater than or equal to a preset current threshold, it can be determined that the first motor 660 is in a stalled state, and at this time, the user needs to be notified to maintain the cleaning head assembly 650.

[0211] Specifically, the notification for maintaining the cleaning head assembly 650 includes: the cleaning head assembly 650 is entangled; the cleaning head assembly 650 rotates and jams; and / or, the cleaning head assembly 650 moves and jams, etc.

[0212] In addition, the controller processes the usage data of the first motor 660 and obtains a notification for maintaining the cleaning element 652 based on the usage data of the first motor 660. Specifically, the surface cleaning device of the present disclosure may further include a current sensor for detecting the current flowing through the first motor 660. Thus, the controller can obtain the operating time of the first motor 660 based on the current flowing through the current sensor. Correspondingly, the operating time of the cleaning element 652 can be obtained based on the operating time of the first motor 660. When the operating time of the cleaning element 652 is greater than the first preset time threshold, the cleaning element 652 needs to be cleaned. At this time, the surface cleaning device can dock at the base station 900, and the base station 900 can clean the cleaning element 652 of the surface cleaning device. On the other hand, when the operating 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 correspondingly, the cleaning effect of the surface cleaning device on the surface to be cleaned is improved.

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

[0214] As Figures 21 to 24 shown, the floor brush assembly 600 of the present disclosure may further include a scraping assembly 700, wherein the scraping assembly 700 is installed on the housing assembly. When the cleaning head assembly 650 changes from the raised position to the lowered position, at least a part of the cleaning head assembly 650 interferes with the scraping assembly 700, so that the dirt adhered to the cleaning head assembly 650 is scraped by the rotation of the cleaning head assembly 650 and the scraping assembly 700.

[0215] In a preferred embodiment, the scraping assembly 700 can be set to be detachable from the housing assembly or can be installed on the housing assembly. Specifically, when the user no longer needs the side cleaning function, the user can detach the cleaning head assembly 650 from the housing assembly, and correspondingly, the user can also detach the scraping assembly 700 from the housing assembly. When the user needs to maintain the cleaning head module 650 and the scraping assembly 700, the user can also detach the cleaning head module 650 and the scraping assembly 700 from the housing assembly, and then clean or replace the cleaning head module 650, and clean and keep the scraping assembly 700 clean.

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

[0217] In some embodiments, in the working state, the rolling wheel and the agitator 630 support the floor brush assembly 600, such as 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 to say, during the operation of the surface cleaning device, a gap is provided between the bottom surface of the scraping assembly 700 and the surface to be cleaned, so that the scraping assembly 700 does not contact the surface to be cleaned. Thus, the scraping assembly 700 will not damage the surface to be cleaned, and moreover, the surface to be cleaned will 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 housing assembly. Thus, the bottom surface of the housing 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 part of the bottom surface of the scraping assembly 700 of the present disclosure may also protrude from the bottom surface of the housing assembly. Thus, the distance between the bottom surface of the scraping assembly 700 and the surface to be cleaned is smaller than the distance between the bottom surface of the housing assembly and the surface to be cleaned. Thus, components such as the cleaning head assembly 650 and the first motor 660 of the present disclosure will not protrude too much above the upper surface of the housing assembly in the vertical direction. Correspondingly, the surface cleaning device of the present disclosure is more aesthetically pleasing.

[0219] In one embodiment, the scraping assembly 700 is connected to the suction nozzle 640 or the recovery pipeline 401 of the floor brush assembly 600 through the suction head 710; more preferably, the suction head 710 of the present disclosure can be fixed to the base portion 610 of the housing assembly and is located inside the base portion 610. That is to say, after the scraping assembly 700 of the present disclosure removes the dirt and cleaning liquid on the cleaning head assembly 650, the dirt and cleaning liquid can be sucked through the suction head 710 to the suction nozzle 640 or the recovery pipeline 401, and then enter the recovery tank 400 along with the airflow in the recovery pipeline 401.

[0220] In the present disclosure, since the cleaning head assembly 650 is used less frequently, 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. Correspondingly, 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 and improve 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 as to open or close the liquid flow path between the suction head 710 and the suction nozzle 640 or the recovery pipeline 401 by controlling the opening and closing of the solenoid valve. Specifically, when the cleaning head assembly 650 of the present disclosure is in the working state (at this time, the cleaning head assembly 650 is in the lowered position), the solenoid valve can be opened so that the dirt and cleaning liquid generated by the cleaning head assembly 650 can be sucked into the recovery tank 400; on the other hand, when the cleaning head assembly 650 of the present disclosure is in the non-working state (at this time, the cleaning head assembly 650 is in the raised position), the solenoid valve can be closed, so that the negative pressure can be completely provided to the suction nozzle 640, improving the cleaning effect of the floor brush assembly 600. At the same time, since the electric suction source can operate at a lower power, the battery life 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 inside the scraping assembly 700; thus, the suction head 710 can only suck the liquid in the solid-liquid mixture (a mixture of dirt and cleaning liquid) stored in the scraping assembly 700. Correspondingly, the solids in the solid-liquid mixture are retained in the scraping assembly 700, 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 finishes the cleaning operation, the scraping assembly 700 can be detached from the housing assembly of the floor brush assembly 600 to clean the solids in the solid-liquid mixture retained in the scraping assembly 700 in a timely manner; on the other hand, the filter screen 711 can be detached from the suction head 710. Thus, the filter screen 711 can also be detached from the suction head 710 and the solid dirt attached to the filter screen 711 can be cleaned to prevent these solid dirt from generating odors.

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

[0225] As Figures 22 to 24 shown, the scraping assembly 700 of the present disclosure may include components such as a bottom plate 701, a first side plate 702, a second side plate 703, a liquid storage part 704, and a scraping plate 705.

[0226] The bottom plate 701 includes a first direction and a second direction. Among them, along the first direction, the upper surface of the bottom plate 701 is inclined. For example, along the direction from the center of the floor brush assembly 600 to the side wall of the floor brush assembly 600, the upper surface of the bottom plate 701 slopes upward from the first end to the second end. Thus, the cleaning liquid can flow from the second end to the first end under the action of gravity.

[0227] At both ends of the bottom plate 701 in the second direction, a first side plate 702 and a second side plate 703 are respectively provided, wherein the first direction and the second direction are different directions. For example, the first direction and the second direction can 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 having substantially the same structure includes that the first side plate 702 and the second side plate 703 have a symmetrically arranged structure.

[0229] The following takes the structure of the first side plate 702 as an example for illustration. The first part 702A of the first side plate 702 is arranged near the first end of the bottom plate 701 in the first direction. Correspondingly, the second part 702B of the first side plate 702 is arranged near the second end of the bottom plate 701 in the first direction, and in the height direction, the first part 702A of the first side plate 702 has a larger size than the second part 702B. In other words, the upper end of the first part 702A is farther from the upper surface of the bottom plate 701 than the upper end of the second part 702B.

[0230] In the present disclosure, a liquid storage part 704 is provided on the bottom plate 701, wherein the liquid storage part 704 is arranged near the first end of the bottom plate 701 in the first direction. At the same time, a baffle member 706 is also provided at the second end of the bottom plate 701 in the first direction. Thus, the bottom plate 701, the liquid storage part 704, the first side plate 702, the second side plate 703 and the baffle member 706 together form a liquid storage tank with an upward opening.

[0231] At the same time, a scraper 705 is also provided on the bottom plate 701. The scraper 705 is arranged to extend upward from the upper surface of the bottom plate 701 by a preset distance. That is to say, the scraper 705 of the present disclosure has a preset 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 is 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 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 either. Thus, the dirt and cleaning liquid carried on the cleaning head assembly 650 can be scraped off by the scraper 705 and recovered into the above-mentioned liquid storage tank.

[0232] That is to say, considering that the cleaning head assembly 650 has different rotation directions, the dirt and cleaning liquid scraped by the squeegee 705 can be recovered to the area between the squeegee 705 and the first side plate 702, or to the area between the squeegee 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 upper surface of the squeegee 705 is set as an inclined surface and slopes downward along the direction from the middle of the floor brush assembly 600 to the edge of the floor brush assembly 600 (that is, along the direction from the first end to the second end of the bottom plate 701). Thus, the upper surface (i.e., the inclined surface) of the squeegee 705 of the present disclosure can be arranged substantially parallel to the lower surface of the cleaning element 652. Correspondingly, the squeegee 705 can have a preset interference depth with the cleaning element 652, and this interference depth is substantially the same along the radial direction of the cleaning element 652.

[0234] The interior of the liquid storage part 704 of the present disclosure has a liquid storage space. Wherein, through holes are provided on the side wall of the liquid storage part 704, and the liquid storage space can be communicated with the liquid storage tank through the through holes. That is to say, the solid-liquid mixture such as dirt and cleaning liquid of the present disclosure can flow into the liquid storage space under the action of gravity or under the action of negative pressure adsorption, and be recovered to the recovery tank 400 via the liquid storage space.

[0235] In a preferred embodiment, one end of the squeegee 705 is connected to the liquid storage part 704, and through holes are provided on both sides of the squeegee 705. Correspondingly, the solid-liquid mixture on both sides of the squeegee 705 can flow into the liquid storage space.

[0236] Correspondingly, 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, a preset distance is provided between one end of the suction head 710 and the bottom wall of the liquid storage space (i.e., the upper surface of the bottom plate 701), so that the solid in the solid-liquid mixture can be located below the suction head 710. Correspondingly, the solid in the solid-liquid mixture will not affect the normal operation of the filter net 711.

[0238] In the present disclosure, a stepped portion 707 is provided inside the liquid storage part 704. One end of the suction head 710 can contact the stepped portion 707 and its position is restricted by the stepped portion 707. Thus, the filter net 711 of the present disclosure can also be restricted in position by the stepped portion 707. At this time, through the setting of the stepped portion 707, the filter net 711 can be effectively prevented from detaching from the suction head 710.

[0239] Moreover, the baffle member 706 of the present disclosure is not suitable to be set too high. Specifically, when the cleaning head assembly 650 is in the working state, that is, when the cleaning head assembly 650 is in the lowered position, the baffle member 706 is set not to contact the lower surface of the cleaning head assembly 650. At this time, only the lower surface of the cleaning head assembly 650 (such as the cleaning element 652 of the cleaning head assembly 650) contacts the squeegee 705. Thus, only the squeegee 705 is used to scrape off the dirt and cleaning liquid of the cleaning head assembly 650, and the dirt and cleaning liquid are collected by the scraping assembly 700. Correspondingly, since other components do not interfere with the cleaning head assembly 650, it is possible to prevent the dirt and cleaning liquid of the cleaning head assembly 650 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 directly above the squeegee 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 taking a certain amount of time to infiltrate the cleaning head assembly 650, the squeegee 705 does not scrape off the newly added cleaning liquid but mainly removes the used cleaning liquid. On the other hand, when the squeegee 705 removes the used cleaning liquid, the cleaning element 652 of the cleaning head assembly 650 is in a substantially dry state and needs to be replenished with cleaning liquid. At this time, the cleaning element 652 will have better water absorption ability, thus accelerating the infiltration of the cleaning liquid into the cleaning element 652. In addition, since the cleaning head assembly 650 in contact with the squeegee 705 needs to move a relatively large circumferential distance before contacting the surface to be cleaned, during this period, the cleaning element 652 of the cleaning head assembly 650 can be effectively infiltrated by the cleaning liquid, thereby improving the cleaning effect of the cleaning head assembly 650 on the surface to be cleaned.

[0241] In the present disclosure, at least a part of the scraping assembly 700 can be inserted into the base portion 610 of the floor brush assembly 600 and can be fixed to the base portion 610 of the floor brush assembly 600.

[0242] Specifically, the bottom wall of the base portion 610 of the present disclosure is recessed upward to form a receiving groove. The upper ends of the first side plate 702, the second side plate 703, and the liquid storage portion 704 of the scraping assembly 700 can be inserted into the receiving groove. Correspondingly, components such as the bottom plate 701 of the scraping assembly 700 can be outside the receiving groove.

[0243] Figure 26 It is a schematic structural view of a floor brush assembly from an angle according to an embodiment of the present disclosure. Figure 27 is Figure 26 an enlarged structural view. Figure 28 It is a schematic structural view of a floor brush assembly from another angle according to an embodiment of the present disclosure. Figure 29Yes Figure 28 Schematic enlarged view of part C of

[0244] As Figures 26 to 29 shown, in the present disclosure, the receiving groove is formed by the first side wall 612, the second side wall 613, the rear wall 614, etc. Specifically, the first side wall 612 and the second side wall 613 are oppositely arranged, and the rear wall 614 is respectively connected to one ends of the first side wall 612 and the second side wall 613; 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 part of the fixing element 615 can be located in the receiving groove, for example, one end of the fixing element 615 can pass through the rear wall 614 and be located in the receiving groove, and when the fixing element 615 is in the open position, the part of the fixing element 615 located in the receiving groove will move out of the receiving groove, so that the scraping assembly 700 can be detached from the base portion 610.

[0246] On the other hand, a clamping groove 708 is formed on the liquid storage portion 704 of the scraping assembly 700, and the clamping groove 708 can cooperate with the fixing element 615, so that when at least a part of the scraping assembly 700 is located in the receiving groove, one end of the fixing element 615 can be inserted into the clamping groove 708, thereby fixing the scraping assembly 700 to the base portion 610 by 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. At the same time, the fixing element 615 can be moved from the open position to the closed position by the restoring force of the spring. More preferably, the movement of the fixing element 615 can be guided by a guiding structure provided on the base portion 610.

[0248] Moreover, the upper surface of the end of the fixing element 615 located within the card slot 708 is provided as a substantially horizontal surface. Correspondingly, the upper surface of the card slot 708 is also provided as a substantially horizontal surface, so that the fixing element 615 can be engaged and cooperated with the card slot 708, and the position limitation of the scraping assembly 700 can be achieved. In addition, the lower surface of the end of the fixing element 615 located within the card slot 708 is provided as an inclined surface. Correspondingly, when the scraping assembly 700 is installed on the base portion 610, it is not necessary to manually operate the fixing element 615. Instead, 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. Thus, the installation of the scraping assembly 700 is facilitated. Then, when the scraping assembly 700 is further pushed and installed at 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. Correspondingly, one end of the fixing element 615 can be inserted into the card slot 708, thereby achieving the position limitation of the scraping assembly 700.

[0249] In a preferred embodiment, a stop member may be provided on the base portion 610. The stop member can limit the fixing element 615 in the closed position. Thus, through the setting of the stop member, the fixing element 615 can be prevented from separating from the base portion 610.

[0250] As Figure 29 shown, guiding structures 612A are provided on both the first side wall 612 and the second side wall 613 of the present disclosure. Specifically, taking the first side wall 612 as an example, the guiding structure 612A may be a guiding protrusion. Correspondingly, a guiding groove 702C is formed on the first side plate 702, and through the cooperation between the guiding protrusion and the guiding groove, when the scraping assembly 700 is installed on the base portion 610 or disassembled from the base portion 610, it can be guided, thereby facilitating the installation and disassembly of the scraping assembly 700. Preferably, the guiding groove 702C is formed on the first part 702A of the first side plate 702.

[0251] In addition, an elastic fixing member 702D is provided on the first side plate 702, and a clamping hole 612B is provided on the first side wall 612. When the scraping assembly 700 is fixed to the base portion 610, the elastic fixing member 702D can be located within the clamping hole 612B. That is to say, the elastic fixing member 702D of the present disclosure can produce a certain elastic deformation. During the installation process of the scraping assembly 700, the elastic fixing member 702D is compressed and moves towards the inside of the scraping assembly 700. After the scraping assembly 700 is installed in the preset position, the elastic fixing member 702D returns to its initial position, so that the elastic fixing member 702D can be snapped into the clamping hole 612B, thereby realizing the auxiliary positioning of the scraping assembly 700. Preferably, the elastic fixing member 702D is formed on the first portion 702A of the first side plate 702.

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

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

[0254] As Figure 30 shown, the cover portion 620 of the present disclosure has an upper surface. Among them, a chamber portion 621 protruding from the upper surface of the cover portion 620 is provided on the cover portion 620, and the chamber portion 621 is used to accommodate the first motor 660. The upper end surface of the chamber portion 621 is equal to or lower than the highest point of the upper surface of the cover portion 620.

[0255] That is to say, the highest point of the upper surface of the remaining part of the cover portion 620 of the present disclosure after removing the chamber portion 621 is formed as the highest point of the entire floor brush assembly 600. At this time, the upper end surface of the chamber portion 621 can be planar. When the surface cleaning device is placed on a substantially horizontal surface to be cleaned, the upper end surface of the chamber portion 621 is also substantially horizontal, that is, located in a certain horizontal plane. Correspondingly, the upper end surface of the chamber portion 621 is not formed as the highest point of the entire floor brush assembly 600, or the upper end surface of the chamber portion 621 and the highest point of the upper surface of the remaining part of the cover portion 620 after removing the cover portion 620 together 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 portion 620 after removing the chamber portion 621 and the upper end surface of the chamber portion 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-flat state, the highest point on the upper surface of the cover portion 620 of the floor brush assembly 600 (i.e., the highest point on the upper surface of the remaining portion of the cover portion 620 after removing the chamber portion 621) is formed as the highest point of the entire surface cleaning device.

[0257] More preferably, the connecting portion 500 and the floor brush assembly 600 are pivotally connected. Specifically, the connecting portion 500 and the housing assembly of the floor brush assembly 600 are rotatably connected, and the pivot axis between the connecting portion 500 and the housing assembly of the floor brush assembly 600 is a horizontal straight line, and this horizontal straight line is perpendicular to the front-rear 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 partial area of the upper surface of the cover portion 620, thereby facilitating the layout of the positions of the first motor 660 and the valve device 681. Specifically, components such as the first motor 660 and the valve device 681 of the present disclosure can be vertically arranged, so that the positions of the components of the floor brush assembly 600 of the present disclosure are more reasonably distributed.

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

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

[0261] As Figure 31 shown, the cleaning head assembly 650 of the present disclosure can be set such that: at the lowered position, the inner side of the portion of the cleaning head assembly 650 in contact with the surface to be cleaned is closer to the inside of the base portion 610 than the outer side of the contact surface of the agitator 630 with the surface to be cleaned. Thus, when the surface cleaning device of the present disclosure is cleaning the surface to be cleaned and the floor brush assembly 600 is controlled to move forward, there will be no area where cleaning is missed within the cleaning width range of the floor brush assembly 600.

[0262] In a preferred embodiment, the agitator 630 may include a cleaning member, and the cleaning member can be made of an object such as flannelette and is formed in a cylindrical shape or a belt shape. Thus, along the axial direction of the cleaning member, the cleaning member includes a first end and a second end. Correspondingly, the first end of the cleaning member is adjacent to one side wall of the floor brush assembly 600, the second end of the cleaning member is adjacent to the other side wall of the floor brush assembly 600, and there is a first edge distance D1 between the first end of the cleaning member and one side wall of the floor brush assembly 600.

[0263] In addition, when the cleaning head assembly 650 is in the lowered position, at least a portion of the cleaning element 652 contacts the surface to be cleaned, and a working surface is formed through the contact portion of the cleaning element 652 with the surface to be cleaned; at least a portion of the working surface is within the horizontal plane projection of the housing assembly; wherein, there is a second edge distance D2 between the portion of the working surface within the horizontal plane projection of the floor brush assembly 600 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, effectively preventing the occurrence of missed cleaning areas.

[0264] In a preferred embodiment, the cleaning element 652 is in an annular shape, and a second edge distance D2 is formed between the inner circle of the annular cleaning element 652 and a side wall of the floor brush assembly 600.

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

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

[0267] In addition, the control method for the surface cleaning device of the present disclosure may also include: according to the usage data generated by the first sensor assembly 690, turning on and off the power supply to the electric suction source; and / or, increasing and decreasing the suction power of the electric suction source.

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

[0269] In addition, when the usage amount of cleaning liquid during each operation cycle of the first motor 660 is excessive, controlling the solenoid valve and stopping the supply of cleaning liquid to the cleaning head assembly 650; and / or, when the usage amount of cleaning liquid during each operation cycle of the first motor 660 is too little, controlling the solenoid valve and turning on the supply of cleaning liquid to the cleaning head assembly 650.

[0270] In some embodiments, usage data of the first motor 660 is obtained, and a notification for maintenance of the cleaning head assembly 650 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 for maintenance of the cleaning head assembly 650 includes one of the following: the cleaning head assembly 650 is entangled; the cleaning head assembly 650 is rotationally jammed; the cleaning head assembly 650 is translationally jammed. That is to say, when the current flowing through the first motor 660 in the present disclosure is too large, a possible reason is that the first motor 660 is stalled. Therefore, it can be determined that the cleaning head assembly 650 is entangled, the cleaning head assembly 650 is rotationally jammed, or the cleaning head assembly 650 is translationally jammed. Based on this notification, the user can perform maintenance on the cleaning head assembly 650.

[0271] In the present disclosure, a notification for 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 operating time of the first motor 660. The need for 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, based on the usage data generated by the first sensor assembly 690, the power supply to the first motor 660 is turned on and off, including: obtaining a first distance between the floor brush assembly 600 and the wall based on the usage data generated by the first sensor assembly 690; when the first distance is greater than a preset distance threshold, keeping the cleaning head assembly 650 in the raised position, or controlling the first motor 660 to act and causing the cleaning head assembly 650 to rise; when the first distance is less than or equal to the preset distance threshold, keeping the cleaning head assembly 650 in the lowered position, or controlling the first motor 660 to act and causing the cleaning head assembly 650 to descend. Thus, based on the usage data generated by the first sensor assembly 690, it can be determined that when the surface cleaning device is against the wall, the cleaning head assembly 650 is controlled to be able to descend and perform floor cleaning; on the other hand, when it is determined that the surface cleaning device is not against the wall, the cleaning head assembly 650 is controlled to be able to rise.

[0273] According to another aspect of the present disclosure, another control method for a surface cleaning device is provided. The surface cleaning device can be the above-mentioned surface cleaning device. The surface cleaning device includes a normal cleaning mode and a side cleaning mode. In the normal cleaning mode, the cleaning head assembly 650 is in the raised position and the cleaning head assembly 650 does not contact the surface to be cleaned. Correspondingly, the first motor 660 is also in a non-operating state. In the side cleaning mode, the cleaning head assembly 650 is in the lowered position and the cleaning head assembly 650 contacts the surface to be cleaned and cleans the surface to be cleaned.

[0274] The control method of the surface cleaning device includes: obtaining a power-on signal of the surface cleaning device, and making the surface cleaning device in a working state according to the power-on signal of the surface cleaning device; selectively applying a cleaning liquid to the cleaning head assembly 650 for a selected period of time to moisten the contact surface between the cleaning head assembly 650 and the surface to be cleaned; and stopping applying the cleaning liquid to the cleaning head assembly 650 after a selected period of time, wherein either or both of selectively applying the cleaning liquid or stopping applying the cleaning liquid are performed after the electric suction source of the surface cleaning device is started.

[0275] That is to say, in the control method of the surface cleaning device of the present disclosure, when the surface cleaning device is powered on, a cleaning liquid is provided to the cleaning head assembly 650, so that the cleaning head assembly 650 is fully wetted. Correspondingly, when the surface cleaning device is close to the wall and in the edge cleaning mode, the wetted cleaning head assembly 650 can immediately clean the edge of the wall, improving the cleaning efficiency of the surface cleaning device.

[0276] More specifically, either or both of selectively applying the cleaning liquid or stopping applying the cleaning liquid are automatically controlled by the controller of the surface cleaning device, so that the surface cleaning device of the present disclosure has good automatic control ability and improves the user experience.

[0277] In the present disclosure, whether the surface cleaning device is in the edge cleaning mode is confirmed according to the magnitude relationship 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. In this edge cleaning mode, the working time of the edge cleaning mode, that is, the duration of the edge cleaning mode, is recorded; further, when the duration is greater than or equal to the preset time threshold, then after reaching the selected time, the cleaning liquid is not stopped from being applied to the cleaning head assembly 650. Thus, when the surface cleaning device is in the edge cleaning mode from the start of power-on, it can always be in the edge cleaning mode, and the 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 the cleaning liquid or stopping applying the cleaning liquid are controlled by the user through a user interaction button (trigger). Thus, the user can control the application or stopping of the cleaning liquid according to the dirt degree of the surface to be cleaned, etc., so as not to waste the cleaning liquid and improve the usage duration of the cleaning liquid of the surface cleaning device.

[0279] In some embodiments, during the process of applying the cleaning liquid to the cleaning head assembly 650, the cleaning head assembly 650 remains rotating, whereby the entire cleaning head assembly 650 can be evenly wetted. Correspondingly, when the cleaning head assembly 650 contacts the surface to be cleaned and cleans the surface to be cleaned, the surface to be cleaned can be evenly wet-cleaned, preventing water stains from appearing on some parts of the surface to be cleaned while some parts of the surface to be cleaned are not provided with the cleaning liquid.

[0280] After the cleaning liquid is applied to the cleaning head assembly 650, the user is prompted that the cleaning head assembly 650 has been applied with the cleaning liquid. Thus, the user can accurately know the state of the cleaning head assembly 650, and will not send incorrect instructions to the surface cleaning device.

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

[0282] In the present disclosure, when selectively stopping applying the cleaning liquid to the cleaning head assembly 650, the cleaning liquid is kept applied to the agitator 630. Thus, the agitator 630 can be used to clean the surface to be cleaned. At this time, the surface cleaning device is not in the edge cleaning mode but in the normal cleaning mode.

[0283] In a preferred embodiment, when selectively applying the cleaning liquid, the cleaning head assembly 650 is in the raised position. At this time, the on-off of the solenoid valve can be controlled to supply the cleaning liquid to the cleaning head assembly 650. As analyzed above, when the cleaning head assembly 650 is in the raised position, the first motor 660 can drive the cleaning head assembly 650 to rotate through the actuating assembly without causing the cleaning head assembly 650 to descend.

[0284] In another embodiment, when selectively applying the cleaning liquid, the cleaning head assembly 650 is in the lowered position. After stopping applying the cleaning liquid, the cleaning head assembly 650 moves from the lowered position to the raised position; at this time, the cleaning liquid can be supplied to the cleaning head assembly 650 through the above-mentioned valve device 681. At this time, the lifting of the cleaning head assembly 650 can be accompanied by the opening or closing of the valve device 681, so that the cleaning head assembly 650 is effectively wetted and then moves to the raised position, and at this raised position, waits for the surface cleaning device to enter the edge cleaning mode.

[0285] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0286] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0287] Those skilled in the art should understand that the above embodiments are merely for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made on the basis of 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; A handle portion, the handle portion being detachably connected to the main body portion; 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; the floor brush assembly includes a housing assembly, the housing assembly defines a receiving chamber, and an agitator is arranged in the receiving chamber; the cleaning liquid stored in the supply tank is distributed to the agitator via a liquid distributor, so that the surface to be cleaned is wet-cleaned by the rotation of the agitator, and the sewage after cleaning the surface to be cleaned is recovered and stored in a recovery tank; Wherein, the floor brush assembly also includes a cleaning head assembly, which is driven to move between a raised position and a lowered position; the cleaning head assembly 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 is outside the horizontal plane projection of the housing assembly.

2. The surface cleaning device according to claim 1, characterized in that The floor brush assembly also includes: an actuating assembly, which is driven 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.

3. The surface cleaning device according to claim 2, characterized in that When the actuating assembly is located in the second position, the actuating assembly can be driven to rotate, and the actuating assembly drives the cleaning head assembly to rotate.

4. The surface cleaning device according to claim 2, characterized in that The housing assembly defines an escape portion, and at least a portion of the actuating assembly is disposed within the escape portion.

5. The surface cleaning device according to claim 2, characterized in that The floor brush assembly includes a first motor, which is disposed on the housing assembly and is used to drive the actuating assembly to rise and fall and / or rotate.

6. The surface cleaning device according to claim 5, characterized in that The cleaning head assembly includes a rotation axis, and 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 6, characterized in that The rotation axis of the cleaning head assembly is closer to the outside of the floor brush assembly than the rotation axis of the first motor.

8. The surface cleaning device according to claim 5, characterized in that The rotation axis of the first motor is inclined toward the outer side of the floor brush assembly from top to bottom.

9. The surface cleaning device according to claim 2, 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.

10. The surface cleaning device according to claim 9, 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.

11. 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.

12. The surface cleaning device according to claim 11, characterized in that At least a portion of the limiting element is used to limit the protrusion of the first bracket.

13. The surface cleaning device according to claim 9, characterized in that 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.

14. The surface cleaning device according to claim 13, characterized in that 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.

15. The surface cleaning device of claim 14, wherein: The two ends of the damping part are connected to the side walls of the notch through elastic members.

16. The surface cleaning device of claim 1, wherein: 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°.

17. The surface cleaning apparatus of claim 1, wherein: 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.

18. The surface cleaning apparatus of claim 17, wherein: The cleaning element has a circular profile, and a portion of the cleaning element includes at least an outer edge of the circular profile.

19. The surface cleaning apparatus of claim 17, wherein: The rotation axis of the cleaning disc does not coincide with the rotation axis of the first motor.

20. The surface cleaning apparatus of claim 19, wherein: 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.

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