JP7785160B2 - Button structure, liquid storage tank and automatic cleaning device - Google Patents

Description

(Related Applications)
This application claims priority to Chinese Patent Application No. 202111021326.9, filed on September 1, 2021, the entire disclosure of which is incorporated herein by reference.

This disclosure relates to the technical field of cleaning robots, and specifically to a button structure, a liquid storage tank, and an automatic cleaning device.

Automatic cleaning devices are used to automatically clean a designated area, and conventional automatic cleaning devices include sweepers, mop machines, and combined sweeping and mopping machines. Automatic cleaning devices with a mopping function must be equipped with a liquid storage tank to supply cleaning liquid.

Water tanks are usually detachable, which makes it convenient for cleaning, maintenance, filling, and other operations. For detachable water tanks, different detachable buttons must be designed depending on the water tank structure and automatic cleaning device. Existing detachable buttons are inconvenient for removing the water tank or are too large, which adversely affects the installation of other components of the automatic cleaning device and the volume of the water tank, making it inconvenient to remove the water tank.

The objective of the present disclosure is to provide a button structure, a liquid storage tank, and an automatic cleaning device that can solve the technical problem of the inconvenience of removing the liquid storage tank.

According to a specific embodiment of the present disclosure, on the one hand, the present disclosure provides a button structure that is assembled to a liquid storage tank so that the liquid storage tank can be detachably assembled to the automatic cleaning device, the button structure including: a button body; a pressing portion located at one end of the button body and configured to unlock the liquid storage tank from the automatic cleaning device when subjected to a downward acting force; and a boss located at one end of the button body opposite the pressing portion, wherein when the button structure is assembled to the liquid storage tank, the pressing portion is higher than the boss, and the boss opposes the movement direction of the pressing portion so that the liquid storage tank can be detachably assembled to the automatic cleaning device.

In an embodiment of the present disclosure, the boss has a first surface which is a curved surface extending upward along the top surface of the button body, a second surface which is a curved surface smoothly connected to the first surface and configured to abut against and engage with a tab of the automatic cleaning device, and a third surface which is a flat surface smoothly connected to the second surface and extends approximately vertically.

In an embodiment of the present disclosure, the connection between the first surface and the second surface is higher than the connection between the second surface and the third surface.

In an embodiment of the present disclosure, the button structure further includes lugs symmetrically disposed on both sides of the button body, and a rotation axis configured to connect the lugs to the liquid storage tank so that the button structure rotates around the rotation axis.

In an embodiment of the present disclosure, the button structure further includes a first elastic member, which is provided on the underside of the pressing portion and provides a restoring force to the pressing portion when the applied force to the pressing portion is released.

In an embodiment of the present disclosure, the upper surface of the pressing portion is higher than the upper surface of the button body, and the lower surface of the pressing portion is higher than the lower surface of the button body.

In an embodiment of the present disclosure, the underside of the pressing portion includes a plurality of reinforcing ribs, and/or the underside of the button body includes a plurality of reinforcing ribs.

According to a specific embodiment of the present disclosure, on the other hand, the present disclosure provides a liquid storage tank including any one of the button structures described above.

In an embodiment of the present disclosure, the liquid storage tank further includes a first assembly portion disposed at an approximately central position of the liquid storage tank for assembling the button structure.

In an embodiment of the present disclosure, the first assembly portion includes a groove for receiving the button structure when the button structure is assembled to the liquid storage tank.

In an embodiment of the present disclosure, the first assembly further includes a light transmission opening located above the button structure and aligned with the position of a pile return lamp on the automatic cleaning device.

In an embodiment of the present disclosure, the liquid storage tank further includes a second assembly, which is disposed at an approximately central position of the liquid storage tank and is configured to inject cleaning liquid into the liquid storage tank after being connected to a base station.

In an embodiment of the present disclosure, the second assembly further includes a liquid refill port located at an approximately central position of the second assembly and configured to inject cleaning liquid into the liquid storage tank.

According to a specific embodiment of the present disclosure, on the other hand, the present disclosure provides an automatic cleaning device including any one of the liquid storage tanks described above.

In an embodiment of the present disclosure, the automatic cleaning device includes a liquid storage tank assembly structure, and the liquid storage tank further includes a cutout portion that aligns with the liquid storage tank assembly structure, and when the liquid storage tank is assembled to the automatic cleaning device, the liquid storage tank assembly structure is assembled to the cutout portion.

In an embodiment of the present disclosure, the liquid storage tank assembly structure includes a tab configured to abut and engage with the boss.

In an embodiment of the present disclosure, the tab includes an inclined surface that engages with the boss after the tab abuts against the boss.

In an embodiment of the present disclosure, the liquid storage tank assembly structure further includes a second elastic member configured to allow the tab to move in a vertical direction.

In an embodiment of the present disclosure, the liquid storage tank further includes a groove that engages with the tab when the liquid storage tank is assembled to the automatic cleaning device.

In an embodiment of the present disclosure, the tab further includes a vertical surface configured to engage with the inner surface of the groove when the liquid storage tank is assembled to the automatic cleaning device.

The present disclosure provides a button structure, a liquid storage tank, and an automatic cleaning device, in which the button structure is a sheet-like structure that facilitates controlled removal of the liquid storage tank while occupying a small volume. At the same time, the button structure can achieve seesaw-type movement and elastically cooperate with the tab of the automatic cleaning device, thereby achieving high convenience in removal and avoiding the stuck phenomenon.

The accompanying drawings herein are incorporated herein as part of this specification, illustrate embodiments of the present disclosure, and, together with the specification, are used to interpret the principles of the present disclosure. Obviously, the accompanying drawings described below are merely some embodiments of the present disclosure, and a person skilled in the art can derive other drawings based on these accompanying drawings without any creative effort.

1 is a perspective view of an automatic cleaning device according to an embodiment of the present disclosure; 1 is a schematic diagram of a bottom structure of an automatic cleaning device according to an embodiment of the present disclosure; 1 is an exploded view of an automatic cleaning device according to an embodiment of the present disclosure. FIG. 1 is a structural diagram of a support platform of an automatic cleaning device according to an embodiment of the present disclosure. 1 is a structural diagram of a vibration member of an automatic cleaning device according to an embodiment of the present disclosure; 1 is a structural diagram of a vibration member according to an embodiment of the present disclosure; 1 is a schematic diagram of an assembly structure of a cleaning substrate according to one embodiment of the present disclosure; 1 is a structural diagram of a clean water pump driven by a motor according to an embodiment of the present disclosure. 1 is a structural diagram of a lifting module driven by a motor according to an embodiment of the present disclosure; Overall structural diagram of an automatic cleaning device according to an embodiment of the present disclosure. Structural diagram of a liquid storage tank according to an embodiment of the present disclosure. 1 is a partial cross-sectional view of a liquid storage tank according to an embodiment of the present disclosure; 1 is a partial cross-sectional view of a liquid storage tank according to an embodiment of the present disclosure; Assembly diagram of a button structure according to one embodiment of the present disclosure. 3 is a schematic three-dimensional view of a button structure according to an embodiment of the present disclosure; Schematic diagram of a beveled top of a button structure according to one embodiment of the present disclosure.

In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the present disclosure will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, and not all of the embodiments. Based on the embodiments of the present disclosure, those skilled in the art can obtain other embodiments without any creative work, all of which fall within the scope of protection of the present disclosure.

The terms used in the embodiments of this disclosure are used only to describe particular embodiments and are not intended to limit the disclosure. As used in the embodiments of this disclosure and the appended claims, the singular forms "a," "the," and "the" are also intended to include the plural form unless the context clearly dictates otherwise, and "plurality" generally includes at least two.

Please note that the term "and/or" used in this specification merely describes the relationship between related objects, and it should be understood that, for example, A and/or B can mean three possibilities: A alone, both A and B, or B alone. Furthermore, in this specification, "/" generally indicates that the related objects before and after it are in an "or" relationship.

Note that, although the embodiments of the present disclosure are described using terms such as first, second, and third, it should be understood that these terms are not intended to be limiting. These terms are used for distinction purposes only. For example, a first may also be referred to as a second, and similarly, a second may also be referred to as a first, without departing from the scope of the embodiments of the present disclosure.

It should be noted that the terms "comprises," "has," or any other variation thereof are intended to cover a non-exclusive inclusion, and that a product or device comprising a set of elements includes not only those elements but also other elements not expressly listed or inherent in such product or device. Unless further qualified, the fact that a definition is made using the phrase "comprises one of..." does not exclude the presence of other elements of the same type in the product or device of said element.

Optional embodiments of the present disclosure are described below with reference to the accompanying drawings.

Figures 1 and 2 are structural schematic diagrams of an automatic cleaning device according to an exemplary embodiment. As shown in Figures 1 and 2, the automatic cleaning device may be a vacuum ground suction robot, a mop/brush robot, a window climbing robot, etc., and may include a mobile platform 100, a sensing system 120, a control system 130, a drive system 140, a cleaning module 150, an energy system 160, and a human interaction system 170.

The mobile platform 100 may be configured to automatically move along a target direction on an operating surface. The operating surface may be a surface to be cleaned by an automatic cleaning device. In some embodiments, the automatic cleaning device may be a mopping robot, where the automatic cleaning device works on a floor surface, with the floor surface being the operating surface; a window cleaning robot, where the automatic cleaning device works on the glass exterior surface of a building, with the glass being the operating surface; or a pipe cleaning robot, where the automatic cleaning device works on the inner surface of a pipe, with the inner surface of the pipe being the operating surface. For illustrative purposes only, the following description of the present application will use a mopping robot as an example.

In some embodiments, the mobile platform 100 may be an autonomous mobile platform or a non-autonomous mobile platform. An autonomous mobile platform means that the mobile platform 100 itself automatically makes adaptive operational decisions in response to unexpected environmental inputs. A non-autonomous mobile platform cannot make adaptive operational decisions in response to unexpected environmental inputs, but can operate according to a predetermined program or certain logic. Therefore, if the mobile platform 100 is an autonomous mobile platform, the target direction may be determined autonomously by an automatic cleaning device. If the mobile platform 100 is a non-autonomous mobile platform, the target direction may be set by a system or manually. If the mobile platform 100 is an autonomous mobile platform, the mobile platform 100 includes a front portion 111 and a rear portion 110.

The sensing system 120 includes a positioning device 121 located above the mobile platform 100, a buffer 122 located in the front portion 111 of the mobile platform 100, a cliff sensor 123 located at the bottom of the mobile platform, and sensing devices such as ultrasonic sensors (not shown), infrared sensors (not shown), magnetometers (not shown), accelerometers (not shown), gyroscopes (not shown), and odometers (not shown), which provide the control system 130 with information on the position and movement status of the equipment.

To more clearly explain the operation of the automatic cleaning device, the following directions are defined: the automatic cleaning device can move on the ground by various combinations of motion about three mutually perpendicular axes defined by the mobile platform 100: the horizontal axis x, the front-to-rear axis y, and the central vertical axis z. The forward driving direction along the front-to-rear axis y is defined as "forward," and the rearward driving direction along the front-to-rear axis y is defined as "rear." The horizontal axis x is approximately aligned with the axis defined by the center point of the drive wheel assembly 141 extending between the right and left wheels of the automatic cleaning device. Here, the automatic cleaning device may rotate about the x-axis. When the front portion of the automatic cleaning device tilts upward and the rear portion tilts downward, this is referred to as "pitch up," and when the front portion of the automatic cleaning device tilts downward and the rear portion tilts upward, this is referred to as "pitch down." Furthermore, the automatic cleaning device may rotate about the z-axis. When the automatic cleaning device tilts to the right of the y-axis in the forward direction of the automatic cleaning device, this is referred to as "right turn," and when the automatic cleaning device tilts to the left of the y-axis, this is referred to as "left turn."

As shown in FIG. 2, cliff sensors 123 are provided on the bottom of the moving platform 100, in front of and behind the drive wheel assembly 141, to prevent the automatic cleaning device from falling when retracting, thereby preventing damage to the automatic cleaning device. The term "front" refers to the side in the same direction as the automatic cleaning device's travel, and the term "rear" refers to the side opposite the direction of travel of the automatic cleaning device.

Positioning devices 121 include, but are not limited to, cameras and laser distance sensors (LDS).

Each assembly in the sensing system 120 may operate independently or may work together to more accurately achieve its intended function. The cliff sensor 123 and ultrasonic sensor recognize the cleaning surface and determine the physical characteristics of the cleaning surface (including surface material, cleanliness, etc.), which can be combined with cameras, laser distance measuring devices, etc. to make more accurate determinations.

For example, an ultrasonic sensor can determine whether the surface to be cleaned is carpet, and if the ultrasonic sensor determines that the surface to be cleaned is carpet material, the control system 130 controls the automatic cleaning device to clean in carpet mode.

A buffer 122 is provided on the front portion 111 of the mobile platform 100, and during the cleaning process, the drive wheel assembly 141 propels the automatic cleaning device across the floor surface. The buffer 122 detects one or more events (or objects) along the path of the automatic cleaning device via a sensor system, such as an infrared sensor. Based on the events (or objects), such as an obstacle or wall, detected by the buffer 122, the automatic cleaning device responds to the events (or objects) and controls the drive wheel assembly 141 so that the automatic cleaning device moves away from the obstacle, for example.

The control system 130 is provided on a circuit motherboard within the mobile platform 100 and includes an arithmetic processor, such as a central processing unit or application processor, communicating with non-transitory memory, such as a hard disk, flash memory, or random access memory. The application processor receives environmental information sensed by the multiple sensors from the sensing system 120, obstacle information fed back from the laser distance measuring device, and the like, and uses a positioning algorithm, such as SLAM, to draw an instantaneous map of the environment in which the automatic cleaning device is located. It autonomously determines a travel path based on the environmental information and the environmental map, and then performs operations such as moving forward, backward, and/or steering the drive system 140 based on the autonomously determined travel path. Furthermore, the control system 130 determines whether to operate the cleaning module 150 to perform a cleaning operation based on the environmental information and the environmental map.

Specifically, the control system 130 combines distance and speed information fed back from sensing devices such as the buffer 122, cliff sensor 123, and ultrasonic sensors, infrared sensors, magnetometers, accelerometers, gyroscopes, and odometers to comprehensively determine the current operating state of the vacuum cleaner, such as whether it has crossed a threshold, is on a carpet, is located on a cliff, is stuck above or below, has a full dustbin, or is being lifted, or provides specific next operating strategies according to different situations, allowing the operation of the automatic cleaning device to better meet the owner's needs and providing a better user experience. Furthermore, the control system can plan the most efficient and rational cleaning path and cleaning method based on the instant map information drawn by SLAM, significantly improving the cleaning efficiency of the automatic cleaning device.

Based on specific distance and angle information, such as x, y, and θ components, the drive system 140 executes drive commands to drive the automatic cleaning device to travel across the floor surface. As shown in FIG. 2, the drive system 140 includes a drive wheel assembly 141. The drive system 140 may simultaneously control the left and right wheels, and for more precise control of the movement of the equipment, the drive system 140 may include a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are arranged symmetrically along a horizontal axis defined by the mobile platform 100.

In order for the automatic cleaning device to move more stably on the floor surface or to have higher mobility, the automatic cleaning device may include one or more steering assemblies 142, which may be driven wheels or driving wheels, and whose structural form includes, but is not limited to, a universal wheel, and the steering assembly 142 may be located in front of the driving wheel assembly 141.

The drive motor 146 provides power to rotate the drive wheel assembly 141 and/or the steering assembly 142.

The drive wheel assembly 141 may be removably connected to the mobile platform 100 for easy installation, removal, and maintenance. The drive wheel may include an offset drop suspension system and may be movably fixed, e.g., rotatably assembled, to the automatic cleaning device mobile platform 100, maintaining contact and traction with the floor surface with a constant ground force by means of an elastic element such as a tension or compression spring, while the cleaning module 150 of the automatic cleaning device also contacts the surface to be cleaned with a constant pressure.

The energy system 160 may include a rechargeable battery such as a nickel-metal hydride battery or a lithium battery. The rechargeable battery is connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery low voltage monitoring circuit, which are connected to a single-chip microcomputer control circuit. For charging, the host is connected to the charging pile via a charging electrode located on the side or bottom of the device. If dust adheres to the exposed charging electrode, the resin around the electrode will melt and deform due to the charge accumulation effect during the charging process, and the electrode itself will also deform, making it impossible to continue normal charging.

The human interaction system 170 includes buttons on the host panel, which are used by the user to select functions, and may further include a display screen and/or indicator lights and/or a speaker, which are used to display the current status or function options of the device to the user, and may further include a mobile phone client program. In the case of a route navigation type cleaning device, the mobile phone client can display to the user a map of the device's environment and the device's location, providing the user with a richer and more user-friendly range of functions.

The cleaning module 150 includes a dry cleaning module 151 and/or a wet cleaning module 400.

As shown in FIG. 2, the dry cleaning module 151 includes a roller brush, a dust box, a fan, and an air outlet. The roller brush, which has a certain degree of interference with the floor surface, sweeps up dust on the floor surface and lifts it up in front of the dust suction port between the roller brush and the dust box. The dust is then sucked into the dust box by the suction gas generated by the fan and passing through the dust box. The dust removal capacity of a vacuum cleaner is expressed in terms of dust pickup efficiency (DPU). DPU is affected by the structure and material of the roller brush, the wind power utilization rate of the airflow path consisting of the dust suction port, dust box, fan, air outlet, and the connecting components between these four components, and the type and output of the fan, making it a complex system design issue. Compared to conventional plug-in vacuum cleaners, improved dust removal capacity is more meaningful for energy-limited automatic cleaning devices. Furthermore, improved dust removal capacity directly and effectively reduces energy requirements; i.e., a device that can clean 80 square meters of floor space on a single charge can be improved to clean more than 180 square meters on a single charge. The reduced number of charges also significantly extends the battery's service life, potentially reducing the frequency with which users need to replace batteries. More intuitively and importantly, improved dust removal capacity provides the most obvious and meaningful user experience, allowing users to directly conclude whether thorough cleaning/mopping has been achieved. The dry cleaning module further includes a side brush 152 with a rotating shaft that is angled relative to the floor surface and moves debris to the roller brush area of the cleaning module 150.

According to a specific embodiment of the present disclosure, as shown in FIGS. 3 to 5, the wet cleaning module 400 provided by the present disclosure cleans at least a portion of the operating surface by wet cleaning, wherein the wet cleaning module 400 includes a cleaning head 410 and a driving unit 420, wherein the cleaning head 410 is used to clean at least a portion of the operating surface, and the driving unit 420 drives the cleaning head 410 to move approximately back and forth along a target surface, which is a portion of the operating surface. The cleaning head 410 moves back and forth along the surface to be cleaned, and a cleaning cloth or cleaning plate is provided on the surface that comes into contact with the cleaning head 410, and the back and forth movement generates high-frequency friction with the surface to be cleaned, removing dirt from the surface to be cleaned.

The higher the friction frequency, the more friction occurs per unit time. High-frequency reciprocating movement, also known as reciprocating vibration, has a much higher cleaning ability than normal reciprocating movement, such as rotation and friction cleaning. Optionally, the friction frequency is similar to that of sound waves, and the cleaning effect is much better than rotation and friction cleaning at several tens of turns per minute. Meanwhile, high-frequency vibration causes the tufts on the surface of the cleaning head to be more aligned and spread in the same direction, resulting in a more uniform cleaning effect overall. While low-frequency rotation does not improve cleaning effect by increasing frictional force solely through downward pressure, downward pressure alone does not cause the tufts to spread in the same direction. As a result, after high-frequency vibration cleaning, the water marks on the operating surface are more uniform, and no chaotic water stains remain.

The reciprocating movement may be repeated movement along any one or more directions within the operating surface, or vibration perpendicular to the operating surface, and is not strictly limited to this. Alternatively, the reciprocating movement direction of the cleaning module is approximately perpendicular to the device's direction of travel. Reciprocating movement parallel to the device's direction of travel can cause the device itself to become unstable during travel. The thrust and resistance in the direction of travel can easily cause the drive wheels to skid. The effect of skidding is even more pronounced when a wet cleaning module is included, and a wet operating surface increases the likelihood of skidding. Skidding not only affects the device's stable cleaning, but also leads to inaccurate distance measurements by sensors such as odometers and gyroscopes, preventing navigation-type automatic cleaning devices from accurately positioning or drawing maps. Frequent skidding can also have a significant impact on SLAM (Sleep-Like Landing). Therefore, skidding of the device must be prevented as much as possible. In addition to skidding, the cleaning head's movement in the device's direction of travel can constantly push the device back and forth as it travels, potentially resulting in unstable operation.

In an embodiment of the present disclosure, as shown in FIG. 3, the drive unit 420 includes a drive platform 421 connected to the bottom surface of the moving platform 100 and configured to provide a driving force, and a support platform 422 detachably connected to the drive platform 421, supporting the cleaning head 410, and configured to be driven by the drive platform 421 to move up and down.

In an embodiment of the present disclosure, a lifting module is provided between the cleaning module 150 and the mobile platform 100 that is configured to allow the cleaning module 150 to better contact the surface to be cleaned or to use different cleaning strategies for surfaces of different materials to be cleaned.

In an embodiment of the present disclosure, the dry cleaning module 151 may be connected to the mobile platform 100 via a passive lifting module, so that when the cleaning device encounters an obstacle, the dry cleaning module 151 can more easily overcome the obstacle via the lifting module.

In an embodiment of the present disclosure, the wet cleaning module 400 is connected to the mobile platform 100 via an active lifting module, and when the wet cleaning module 400 is temporarily not working or when the surface to be cleaned cannot be cleaned by the wet cleaning module 400, the active lifting module lifts the wet cleaning module 400 and separates it from the surface to be cleaned, thereby realizing a change in cleaning means.

As shown in Figures 4 and 5, the drive platform 421 includes a motor 4211 that is located on the drive platform 421 closer to the moving platform 100 and outputs power via a motor output shaft, a drive wheel 4212 that is connected to the motor output shaft and has an asymmetrical structure, and a vibration member 4213 that is located on the drive platform 421 opposite the motor 4211, connected to the drive wheel 4212, and moves back and forth under the asymmetric rotation of the drive wheel 4212.

The drive platform 421 may further include a gear mechanism. The gear mechanism may connect the motor 4211 and the drive wheel 4212. The motor 4211 may directly drive the pivoting movement of the drive wheel 4212, or may indirectly drive the pivoting movement of the drive wheel 4212 via the gear mechanism. Those skilled in the art will understand that the gear mechanism may be a single gear or a gear set consisting of multiple gears.

The motor 4211 simultaneously transmits power to the cleaning head 410, drive platform 421, support platform 422, water supply mechanism, liquid storage tank, etc. via a power transmission device. The energy system 160 provides power and energy to the motor 4211 and is entirely controlled by the control system 130. The power transmission device may be a gear transmission, chain transmission, belt transmission, worm gear, etc.

The motor 4211 has a forward output mode and a reverse output mode. In the forward output mode, the motor 4211 rotates in the forward direction, and in the reverse output mode, the motor 4211 rotates in the reverse direction. In the forward output mode of the motor 4211, the motor 4211 moves the vibration member 4213 of the drive platform in the wet cleaning assembly 400 approximately back and forth through the power transmission device, driving the water supply mechanism to move synchronously. In the reverse output mode of the motor 4211, the motor 4211 drives the platform 421 to rise and fall through the power transmission device.

Furthermore, the drive platform 421 further includes a connecting rod 4214 extending along the edge of the drive platform 421, connecting the drive wheel 4212 and the vibration member 4213, and configured to extend the vibration member 4213 to a predetermined position, wherein the extension direction of the vibration member 4213 is perpendicular to the connecting rod 4214, and the reciprocating movement direction of the vibration member 4213 is approximately perpendicular to the equipment travel direction.

The motor 4211 is connected to the drive wheel 4212, the vibration member 4213, the connecting rod 4214, and the vibration damper 4215 via a power transmission device. The vibration member 4213 and the connecting rod 4214 form a generally L-shaped structure, and as shown in FIG. 6 , the vibration member 4213 is driven by the connecting rod 4214 to move back and forth. The vibration damper 4215 reduces vibration and jitter caused by the drive wheel 4212, allowing the vibration member 4213 to stably vibrate within the range of movement provided by the support platform 422. Optionally, the vibration damper 4215 is made of a flexible material, preferably a rubber structure, and is fitted to the connecting rod 4214. On the other hand, the vibration damper 4215 can protect the vibration member 4213 from damage due to collision with the drive platform 421, thereby affecting the reciprocating movement of the vibration member 4213. The movable and fixed members of the drive platform 421 are connected in a less elastic manner to restrict movement in the direction of travel of the device, but are connected in a more flexible manner to permit movement in a direction substantially perpendicular to the direction of travel, i.e., the vibration direction of the vibrating member 4213. Due to the restriction on movement of both members, the vibrating member 4213 does not move precisely back and forth, but rather moves approximately back and forth. When the wet cleaning assembly 400 is started, the motor 4211 starts rotating forward, and the motor 4211 drives the connecting rod 4214 via the drive wheel 4212 to move back and forth along the surface of the drive platform 421. At the same time, the vibration damper 4215 drives the vibrating member 4213 to move approximately back and forth along the surface of the drive platform 421, and the vibrating member 4213 drives the cleaning substrate 4221 to move approximately back and forth along the surface of the support platform 422, which in turn drives the cleaning substrate 4221 to move approximately back and forth across the active area 412 along the surface to be cleaned. At this time, clean water is discharged from the liquid storage tank by the clean water pump and sprayed onto the cleaning head 410 via the water discharge device 4217, and the cleaning head 410 moves back and forth to clean the surface to be cleaned.

The cleaning intensity/efficiency of the automatic cleaning device can be automatically and dynamically adjusted according to the working environment of the automatic cleaning device. For example, the automatic cleaning device can dynamically adjust based on physical information of the surface to be cleaned detected by the sensing system 120. For example, the sensing system 120 may detect information such as the flatness of the surface to be cleaned, the material of the surface to be cleaned, and the presence or absence of oil or dust, and transmit this information to the control system 130 of the automatic cleaning device. In response, the control system 130 can automatically and dynamically adjust the motor rotation speed and the transmission ratio of the power transmission device according to the working environment of the automatic cleaning device, and control the automatic cleaning device to adjust the preset reciprocating period of the reciprocating movement of the cleaning head 410.

For example, when the automatic cleaning device works on a flat floor surface, the preset reciprocating period may be automatically and dynamically adjusted to be longer and the amount of water in the water pump may be automatically and dynamically adjusted to be smaller; when the automatic cleaning device works on an uneven floor surface, the preset reciprocating period may be automatically and dynamically adjusted to be shorter and the amount of water in the water pump may be automatically and dynamically adjusted to be larger. This is because it is easier to clean a flat floor surface than an uneven floor surface, and therefore faster reciprocating movement of the cleaning head 410 (i.e., higher frequency) and a larger amount of water are required to clean an uneven floor surface.

Furthermore, for example, when the automatic cleaning device 100 works on a table, the preset reciprocating period may be automatically and dynamically adjusted to be longer, and the amount of water from the water pump may be automatically and dynamically adjusted to be smaller. When the automatic cleaning device 100 works on a floor, the preset reciprocating period may be automatically and dynamically adjusted to be shorter, and the amount of water from the water pump may be automatically and dynamically adjusted to be larger. This is because there is less dust and oil on a table than on a floor, and the table material is easier to clean, so the table can be cleaned with less reciprocating movement of the cleaning head 410 and less water from the water pump.

In an embodiment of the present disclosure, the support platform 422 includes a cleaning substrate 4221 movably mounted on the support platform 422, which moves approximately back and forth under the vibration of the vibration member 4213. In an embodiment of the present disclosure, as shown in FIG. 7, the cleaning substrate 4221 includes an assembly notch 42211 positioned to contact the vibration member 4213, and when the support platform 422 is connected to the drive platform 421, the vibration member 4213 is assembled to the assembly notch 42211, and the cleaning substrate 4221 moves approximately back and forth synchronously with the vibration member 4213. The cleaning substrate 4221 includes four first limiting positions 42212 in the direction of travel of the cleaning device, which are flexibly connected to the cleaning substrate 4221 and have a small elastic scaling space, thereby limiting the movement of the cleaning substrate 4221 relative to the support platform 422 in the direction of travel of the cleaning device. The cleaning substrate 4221 also includes two second limiting positions 42213 in a direction perpendicular to the direction of travel of the cleaning device, which limit the range of reciprocating movement of the cleaning substrate 4221 in the direction perpendicular to the direction of travel of the cleaning device. Furthermore, a water discharge hole 42214 is provided near the assembly notch 42211 of the cleaning substrate 4221, through which water flowing out from the water discharge device 4217 flows to the cleaning head 410. Due to the influence of the limiting positions and the vibration buffer device, the movement of the cleaning substrate 4221 is essentially reciprocating. The cleaning substrate 4221 is located on a portion of the support platform 422, and local vibrations can increase the vibration frequency, for example, reaching the sonic frequency range. The movable and fixed members of the drive platform 421 are connected in a flexible manner to limit movement in the direction of travel of the device, but are allowed to move in a direction approximately perpendicular to the direction of travel, i.e., in the vibration direction of the vibrating member 4213, by being connected in a flexible manner.

Furthermore, the support platform 422 further includes an elastic release button 4229, which is disposed on at least one side of the support platform 422 and removably connects the support platform 422 to the engaging claws 4216 of the drive platform 421, so that the support platform 422 is mechanically and removably fixed to the drive platform 421 and fixed to the drive platform and the automatic cleaning device. At least one assembly area 4224 is disposed on the support platform 422 for assembling the cleaning head 410. The assembly area 4224 is formed of an adhesive material having an adhesive layer.

In an embodiment of the present disclosure, as shown in FIG. 3, the cleaning head 410 includes a movable region 412 that is connected to the cleaning substrate 4221 and moves approximately back and forth along the cleaning surface under the drive of the cleaning substrate 4221. The movable region 412 is located approximately at the center of the cleaning head 410.

In an embodiment of the present disclosure, an adhesive layer is provided on the side of the movable area 412 connected to the cleaning substrate 4221, and the movable area 412 and the cleaning substrate 4221 are connected via the adhesive layer.

In an embodiment of the present disclosure, the cleaning head 410 includes a fixed region 411 connected to the bottom of the support platform 422 via the at least one assembly region 4224, and the fixed region 411 cleans at least a portion of the operating surface in accordance with movement of the support platform 422.

The cleaning head 410 further includes a flexible connection 413 provided between the fixed region 411 and the movable region 412 for connecting the fixed region 411 and the movable region 412. The cleaning head 410 further includes a sliding buckle 414 extending along the edge of the cleaning head 410 and removably attached to an engagement position 4225 of the support platform 422.

In this embodiment, as shown in FIG. 3, the cleaning head 410 is made of a material with a certain degree of elasticity, and is fixed to the surface of the support platform 422 via an adhesive layer, allowing the cleaning head 410 to move back and forth. When the cleaning head 410 is working, the cleaning head 410 is always in contact with the surface to be cleaned.

The water supply mechanism includes a water discharge device 4217, which is directly or indirectly connected to a cleaning liquid outlet of a liquid storage tank (not shown), i.e., the liquid outlet of the liquid storage tank. The cleaning liquid flows to the water discharge device 4217 via the cleaning liquid outlet of the liquid storage tank and can be evenly applied to the surface to be cleaned by the water discharge device. A connecting member (not shown) is provided on the water discharge device, and the water discharge device is connected to the cleaning liquid outlet of the liquid storage tank via the connecting member. The water discharge device is provided with a distribution port, which can be a continuous opening or a combination of multiple discontinuous small openings, or the distribution port can be provided with multiple nozzles. The cleaning liquid flows to the distribution port via the cleaning liquid outlet of the liquid storage tank and the connecting member of the water discharge device, and is evenly applied to the operating surface via the distribution port.

The water supply mechanism further includes a clean water pump 4219 and/or a clean water pump pipe 4218, and the clean water pump 4219 may be directly connected to the cleaning liquid outlet of the liquid storage tank or may be connected via the clean water pump pipe 4218.

The clean water pump 4219 may be connected to the connecting member of the water discharge device and configured to suck the cleaning liquid from the liquid storage tank and pump it to the water discharge device. The clean water pump may be a gear pump, vane pump, plunger pump, peristaltic pump, etc.

The water supply mechanism draws cleaning liquid from the liquid storage tank via the clean water pump 4219 and clean water pump pipe 4218 and transports it to the water discharge device. The water discharge device 4217 may be a sprinkler head, drip hole, wet cloth, etc., and distributes water evenly over the cleaning head, wetting the cleaning head and the surface to be cleaned. After wetting, dirt on the surface to be cleaned can be more easily removed. In the wet cleaning assembly 400, the output/flow rate of the clean water pump may be adjusted.

Furthermore, as shown in FIG. 8, the motor 4211 drives the clean water pump 4219 to move peristally via the gear set 42193. The peristaltic movement of the clean water pump 4219 causes clean water to enter through the water inlet 42191, flow out through the water outlet 42192, and be transported to the water discharge device 4217 via the clean water pump pipe 4218. The water flowing out of the water discharge device 4217 flows to the cleaning head 410 via the water outlet hole.

As shown in FIG. 9, the motor 4211 drives the cable gear 42196 to rotate via the gear set 42193. The cable 42194 is wound around the cable gear 42196, which in turn is wound around the drive platform 421. The cable gear 42196 raises and lowers the cable 42194, thereby pulling it and raising and lowering the drive platform 421. The cable gear 42196 and the cable 42194 are the core components of the lifting module.

The gear set 42193 and the cable gear 42196 are provided with a clutch 42195, which includes a spring and a sheet-like member. By controlling the clutch 42195, the motor 4211 controls the three moving modules, rotating in one direction to drive the vibration of the vibration member and simultaneously realize the water supply of the clean water pump 4219, and rotating in the opposite direction to drive the lifting module via the cable 42194. Optionally, the gear set combination design can control different combinations of the three moving modules, for example, rotating in one direction to allow the clean water pump to supply water and rotating in the opposite direction to realize lifting and vibration control. Optionally, two motors can be used to control the three moving modules, but adding motors increases costs.

The cleaning module of the automatic cleaning device includes a dry cleaning module and a wet cleaning module, providing more complete cleaning functionality. At the same time, the wet cleaning module also includes a drive unit and a vibration area, allowing the cleaning head to move back and forth and repeatedly clean the surface being cleaned. This allows the cleaning robot to clean multiple times while passing through an area only once, significantly improving cleaning efficiency, especially in heavily soiled areas.

By working in cooperation with a sensor that can detect the surface type of the surface being cleaned, such as a surface media sensor, the lifting module can perform cleaning operations according to different surfaces being cleaned. For example, for carpeted surfaces, the wet cleaning module can be lifted, and for surfaces such as floors/floor tiles, the wet cleaning module can be lowered to clean, thereby achieving a more complete cleaning effect.

In an embodiment of the present disclosure, the automatic cleaning device 10 includes a liquid storage tank 3000, which further has a liquid refill port 3005. As shown in Figures 10 to 12, the liquid refill port 3005 may be provided on the side wall of the liquid storage tank 3000. When the automatic cleaning device 10 stops at the base station, the base station can inject cleaning liquid into the liquid storage tank 3000 of the automatic cleaning device 10 through the liquid refill port 3005.

In an embodiment of the present disclosure, as shown in FIG. 11 , a second assembly 3004 is provided on the liquid storage tank 3000, and the second assembly 3004 is connected to a base station, whereby the base station injects cleaning liquid into the liquid storage tank 3000 of the automatic cleaning device 10 via the liquid refill port 3005. The second assembly 3004 further includes a liquid refill port 3005 provided at an approximately central position of the second assembly 3004 and configured to inject cleaning liquid into the liquid storage tank 3000.

In an embodiment of the present disclosure, as shown in FIG. 12 , a valve 17 is provided at the liquid refill port 3005 of the liquid storage tank 300, and the valve 17 is openable and closable, allowing control of communication between the liquid refill port 3005 and the liquid storage tank 3000 and disconnection. A conduit 18 is provided within the liquid storage tank 3000, and a valve 17 is provided at one end of the conduit 18.

In an embodiment of the present disclosure, the valve 17 may be an electronic valve or a manual valve, and may be opened or closed by corresponding control. In other embodiments of the present disclosure, the valve 17 may be a check valve, and after the liquid refilling of the liquid storage tank 3000 is completed and the connection between the liquid refill port 3005 and the liquid storage tank 3000 is disconnected, the valve 17 may be automatically closed to prevent the cleaning liquid in the liquid storage tank 3000 from leaking out. For example, the valve 17 may be a cross valve, a lift-up check valve, a swing-up check valve, etc.

In an embodiment of the present disclosure, as shown in Figures 13 to 16, the automatic cleaning device 10 includes a liquid storage tank assembly structure 4000, and the liquid storage tank 3000 includes a cutout portion 3006 that aligns with the liquid storage tank assembly structure 4000, and when the liquid storage tank 3000 is assembled to the automatic cleaning device 10, the liquid storage tank assembly structure 4000 is assembled to the cutout portion 3006 to achieve perfect alignment.

As shown in Figures 13 and 14, the liquid storage tank assembly structure 4000 includes a tab 4001 configured to abut and engage with the boss 2002 of the button structure 12. The liquid storage tank assembly structure 4000 further includes a second elastic member 4004, which provides a vertical elastic force so that the tab 4001 moves in an expanding and contracting direction along the vertical direction. The second elastic member 4004 and the tab 4001 are arranged in the same slide to achieve the above-mentioned expanding and contracting movement. The second elastic member 4004 may be, for example, a coil spring.

In an embodiment of the present disclosure, the tab 4001 has an inclined surface 4002, which is engaged with the inclined surface of the boss after the tab 4001 and the boss are abutted. The tab 4001 further has a vertical surface 4003, which is engaged with the inner surface of the groove 3002 when the liquid storage tank is assembled to the automatic cleaning device. The inclined surface 4002 and the vertical surface 4003 ensure that the liquid storage tank 3000 is accurately positioned forward and backward after being attached to the automatic cleaning device, and can prevent misalignment in any direction.

As shown in FIG. 11, the liquid storage tank 3000 includes a first assembly part 3001, which is located approximately in the center of the liquid storage tank 3000. The first assembly part 3001 may have a rectangular, circular, or other structure, but is not limited to this. The first assembly part 3001 includes a button structure 12, a groove 3002, and a light transmission hole 3003. Here, the groove 3002 is located at the bottom of the first assembly part 3001 and is recessed downward to form a shape that fits the button structure 12. When the button structure 12 is assembled to the liquid storage tank 3000, the groove 3002 is used to accommodate the button structure 12.

As shown in Figures 15 and 16, when the button structure 12 is assembled to the first assembly part 3001 of the liquid storage tank, the liquid storage tank is assembled so as to be attachable and detachable to the automatic cleaning device. The button structure has an approximately sheet-like structure and includes a rectangular and approximately flat button body 2000, and a pressing part 2001 arranged at one end of the button body 2000, which, when subjected to a downward acting force, unlocks the liquid storage tank from the automatic cleaning device and makes the liquid storage tank detachable from the automatic cleaning device. The pressing part 2001 has an edge that is wider than that of the button body 2000, which is convenient for applying pressing force. For example, the pressing part 2001 may have a fan-shaped structure, and protruding edges are provided on the outer edge and both side edges of the pressing part 2001, which prevent skidding when pressed and also have the effect of shielding the internal structure of the water tank. After the liquid storage tank has been unlocked from the automatic cleaning device, the liquid storage tank can be completely removed from the automatic cleaning device by pulling the protruding edge on the outer edge of the pressing part 2001 outward.

The button structure further includes a boss 2002 provided at one end of the button body 2000 opposite the pressing portion 2001. When the button structure 12 is assembled to the liquid storage tank 3000, the pressing portion 2001 is higher than the boss 2002 under the natural state of the first elastic member. This contributes to increasing the movable stroke of the pressing portion 2001 and the boss 2002, ensuring stable attachment of the liquid storage tank and preventing it from falling off. Furthermore, it can effectively unlock the tab when removal is required. The boss 2002 and the pressing portion 2001 move in opposite directions, creating a seesaw effect. Compared to a system in which the boss and the pressing portion move in the same direction, the movable stroke of the boss is further increased, making it easier to detachably assemble the liquid storage tank to the automatic cleaning device.

15, in an embodiment of the present disclosure, the boss 2002 has a first surface 20021, which is a curved surface extending upward along the top surface of the button body 2000; a second surface 20022, which is a curved surface smoothly connected to the first surface 20021 and configured to abut against and engage with the tab of the automatic cleaning device; and a third surface 20023, which is a flat surface smoothly connected to the second surface 20022 and extends approximately vertically. The third surface is in close contact with the flat surface of the inner surface of the groove, and together with the flat surface of the tab, achieves stable engagement of the three planes. Here, the second surface 20022 may be a recessed, multi-radius curved surface that cooperates with the end and inclined surface of the tab to achieve stable engagement.

In the embodiment of the present disclosure, the connection between the first surface 20021 and the second surface 20022 is higher than the connection between the second surface 20022 and the third surface 20023, ensuring that the tab does not slide back and forth when it contacts the second surface, achieving stable engagement.

In an embodiment of the present disclosure, as shown in FIG. 15 , the button structure further includes lugs 2003 symmetrically arranged on both sides of the button body 2000, and a rotation axis 2004 connecting the lugs 2003 to the liquid storage tank and configured to rotate the button structure around the rotation axis 2004. Here, the rotation axis 2004 may be arranged closer to the pressing portion 2001, so that when the button structure realizes seesaw movement via the rotation axis, the boss has a longer movable stroke than the pressing portion, making it easier to jack up the tab via the boss, and easier to attach and detach the liquid storage tank.

In an embodiment of the present disclosure, as shown in FIG. 13 , the button structure further includes a first elastic member 2005, which is provided on the underside of the pressing portion 2001 and is configured to provide a restoring force to the pressing portion 2001 when the force applied to the pressing portion 2001 is released. The first elastic member 2005 may be, for example, a coil spring.

In an embodiment of the present disclosure, as shown in FIG. 14, the upper surface of the pressing portion 2001 is higher than the upper surface of the button body 2000, and the lower surface of the pressing portion 2001 is higher than the lower surface of the button body 2000. This provides more movement space for the pressing portion 2001, ensures a movement stroke of the pressing portion 2001, and makes it easier to remove the liquid storage tank.

In an embodiment of the present disclosure, as shown in FIG. 16, multiple reinforcing ribs are provided on the underside of the pressing portion 2001 and/or multiple reinforcing ribs are provided on the underside of the button body 2000, thereby increasing the rigidity of the button structure while simultaneously reducing the overall weight of the button structure.

In an embodiment of the present disclosure, as shown in FIG. 13, the groove 3002 includes a groove wall 30021. After the button structure 12 is assembled into the groove 3002, the boss 2002, under the bias of the tab 4001, has a height lower than that of the groove wall 30021, so that the tab 4001 can abut against the top end of the boss 2002 and engage with the groove wall 30021. Furthermore, shaft holes (not shown) are provided on both side walls of the groove 3002 for inserting and rotating the rotating shaft of the button structure.

When the liquid storage tank is placed on the automatic cleaning device, the tab 4001 first compresses the spring under the pressure of the liquid storage tank, moving upward. When it reaches the groove position, the tab 4001 extends downward under the action of the spring, sliding from the inclined surface 4002 into the groove 3002. The end of the tab then abuts against the second surface 20022 of the boss. At the same time, the vertical surface 4003 of the tab contacts and engages with the inner surface of the groove wall 30021. The third surface 20023 of the boss 2002 also abuts and engages with the inner surface of the groove wall 30021, firmly securing the liquid storage tank to the automatic cleaning device. When it is necessary to remove the liquid storage tank, the pressing plate is pressed, and the boss is lifted upward under the action of the rotating shaft, pushing up the tab. At this point, the rear end of the tab no longer contacts the groove side wall, allowing the liquid storage tank to be removed.

In an embodiment of the present disclosure, as shown in FIG. 11, the first assembly part 3001 further includes a light transmitting opening 3003 located above the button structure 12, and the light transmitting opening 3003 is aligned with the pile return lamp position on the automatic cleaning device, and the pile return lamp emits light through the light transmitting opening 3003 to realize communication with the charging pile.

The button structure provided by the embodiments of the present disclosure is a sheet-like structure with a small volume, which increases the volume of the liquid storage tank and makes it easy to control the removal of the liquid storage tank while occupying a small volume. At the same time, the button structure can achieve a seesaw-type movement and elastically cooperate with the tab of the automatic cleaning device, thereby achieving high convenience in attachment and detachment and preventing the stuck phenomenon.

Finally, please note that each embodiment in this specification is described progressively, focusing on the differences between each embodiment and other embodiments, and that for identical and similar parts of each embodiment, it is sufficient to refer to each embodiment in relation to each other. Furthermore, since the systems or devices disclosed in the embodiments correspond to the methods disclosed in the embodiments, their explanations are relatively simple, and reference may be made to the explanations in the method section.

The above examples are not intended to be limiting but to illustrate the technical solutions of the present disclosure. The present disclosure has been described in detail with reference to the above examples. However, it should be understood that a person skilled in the art may modify the technical solutions described in the above examples or substitute some technical features with equivalents, and such modifications or substitutions will not cause the essence of the relevant technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims (20)

A button structure assembled to a liquid storage tank and configured to detachably assemble the liquid storage tank to an automatic cleaning device,
A button body (2000),
a pressing portion (2001) located at one end of the button body (2000), configured to unlock the liquid storage tank from the automatic cleaning device when subjected to a downward force;
a boss (2002) located at one end of the button body (2000) opposite to the pressing portion (2001);
When the button structure is assembled to the liquid storage tank, the pressing portion (2001) is located on the side of the liquid storage tank, the pressing portion (2001) is higher than the boss (2002), and the movement direction of the boss (2002) is opposite to the movement direction of the pressing portion (2001) so that the liquid storage tank can be detachably assembled to the automatic cleaning device. The Boss (2002)
a first surface (20021) that is a curved surface extending upward along the upper surface of the button body (2000);
a second surface (20022) that is a curved surface smoothly connected to the first surface (20021) and configured to abut and be locked against a tab of the automatic cleaning device;
The button structure according to claim 1, further comprising a third surface (20023) that is a plane that is smoothly connected to the second surface (20022) and extends substantially vertically. The button structure described in claim 2, wherein the connection between the first surface (20021) and the second surface (20022) is higher than the connection between the second surface (20022) and the third surface (20023). The button structure includes:
Lugs (2003) provided symmetrically on both sides of the button body (2000);
2. The button structure of claim 1, further comprising a rotation axis (2004), the rotation axis (2004) configured to connect the lug (2003) and the liquid storage tank such that the button structure rotates around the rotation axis (2004). The button structure further includes a first elastic member (2005);
2. The button structure according to claim 1, wherein the first elastic member (2005) is provided on the underside of the pressing portion (2001) and provides a restoring force to the pressing portion (2001) when the force applied to the pressing portion (2001) is released. The button structure of claim 1, wherein the upper surface of the pressing portion (2001) is higher than the upper surface of the button body (2000), and the lower surface of the pressing portion (2001) is higher than the lower surface of the button body (2000). The button structure of claim 6, wherein the underside of the pressing portion (2001) includes multiple reinforcing ribs and/or the underside of the button body (2000) includes multiple reinforcing ribs. A liquid storage tank including the button structure described in any one of claims 1 to 7. The liquid storage tank of claim 8, further comprising a first assembly part (3001) arranged at an approximately central position of the liquid storage tank (3000) for assembling the button structure. A liquid storage tank as described in claim 9, wherein the first assembly part (3001) includes a groove (3002) for accommodating the button structure when the button structure is assembled to the liquid storage tank (3000). The liquid storage tank of claim 9, wherein the first assembly (3001) further includes a light-transmitting opening (3003) located above the button structure and aligned with the pile return lamp of the automatic cleaning device. The liquid storage tank of claim 8, further comprising a second assembly (3004), the second assembly (3004) being disposed at an approximately central position of the liquid storage tank (3000) and configured to inject cleaning liquid into the liquid storage tank (3000) after being connected to a base station. The liquid storage tank of claim 12, wherein the second assembly (3004) further includes a liquid refill port (3005) positioned approximately at the center of the second assembly (3004) and configured to inject cleaning liquid into the liquid storage tank (3000). An automatic cleaning device comprising a liquid storage tank according to any one of claims 8 to 13 . The automatic cleaning device of claim 14, wherein the automatic cleaning device includes a liquid storage tank assembly structure (4000), the liquid storage tank further includes a cutout portion (3006) that aligns with the liquid storage tank assembly structure (4000), and the liquid storage tank assembly structure (4000) is assembled to the cutout portion (3006) when the liquid storage tank is assembled to the automatic cleaning device. The automatic cleaning device described in claim 15, wherein the liquid storage tank assembly structure (4000) includes a tab (4001) configured to abut and engage with the boss. The automatic cleaning device described in claim 16, wherein the tab (4001) includes an inclined surface (4002) that engages with the boss after the tab (4001) abuts against the boss. The automatic cleaning device described in claim 16, wherein the liquid storage tank assembly structure (4000) further includes a second elastic member (4004) configured to move the tab (4001) in a vertical direction. The automatic cleaning device of claim 16, wherein the liquid storage tank further includes a groove (3002) that engages with the tab (4001) when the liquid storage tank is assembled to the automatic cleaning device. The automatic cleaning device of claim 19, wherein the tab (4001) further includes a vertical surface (4003), the vertical surface (4003) configured to engage with the inner surface of the groove (3002) when the liquid storage tank is assembled to the automatic cleaning device.