Position Arrival Switch Assembly and Automatic Cleaning Device

Abstract

A position arrival switch assembly and an automatic cleaning device are provided, the position arrival switch assembly being assembled to the automatic cleaning device and used to indicate whether the automatic cleaning device has returned to a predetermined position on a pile body, the position arrival switch assembly including a switch member, a button configured to move toward the switch member under the action of an external force, an elastic arm extending from one face of the button facing the switch member in a direction away from the button, and a switch trigger piece connected to one end of the elastic arm away from the button, wherein the switch member is configured to transmit a position arrival signal in response to being triggered by the switch trigger piece, and the button stroke after the switch member is triggered is increased, improving the robustness of the automatic cleaning device in reaching a predetermined position on a liquid-replenished pile.

Description

[Technical Field]

[0001] (Related Applications) This application claims priority to Chinese Patent Application No. 202122150878.1, filed on September 7, 2021, the entire disclosure of which is incorporated herein by reference as part of this application.

[0002] The present invention relates to the technical field of cleaning robots, and in particular to a position arrival switch assembly and an automatic cleaning device. [Background technology]

[0003] An automatic cleaning device is used to automatically clean a predetermined area, and conventional automatic cleaning devices include sweeping machines, mopping machines, and combined sweeping and mopping machines. For an automatic cleaning device with a mopping function, it is necessary to provide a liquid storage tank to supply cleaning liquid.

[0004] When the amount of cleaning liquid in the liquid storage tank is low, the automatic cleaning device must return to the liquid replenishment pile to replenish the cleaning liquid. Conventional automatic cleaning devices do not have a position arrival indicator that indicates whether the automatic cleaning device has moved to a predetermined position in the liquid replenishment pile, which may adversely affect the subsequent liquid replenishment process. Summary of the Invention

[0005] The objective of the present invention is to provide a position arrival switch assembly and an automatic cleaning device, and the specific solutions are as follows: Some embodiments of the present invention provide a position arrival switch assembly assembled to an automatic cleaning device and configured to indicate whether the automatic cleaning device has returned to a predetermined position on a pile body, the position arrival switch assembly comprising: A switch member; a button configured to move toward the switch member under the action of an external force; a resilient arm extending from a surface of the button facing the switch member in a direction away from the button; a switch trigger piece connected to one end of the elastic arm remote from the button, Here, the switch member is configured to transmit a position arrival signal in response to being triggered by the switch trigger piece.

[0006] In some embodiments, the switch member comprises: A switch member body; an elastic member extending from a side of the switch member body facing the button toward the button, Here, in response to the button moving toward the switch member, the switch trigger piece presses the elastic member to compress the elastic member, and in response to the elastic member being compressed by a predetermined amount, the switch member transmits a position arrival signal.

[0007] In some embodiments, the position arrival switch assembly comprises: The switch member further includes a limiting member provided on a side of the switch member body facing the button and configured to prevent continued compression of the elastic member by the switch trigger piece in response to the elastic member being compressed by the predetermined amount.

[0008] In some embodiments, the position arrival switch assembly comprises: The switch further includes a slide rail configured to support the switch trigger piece such that the switch trigger piece is slidable on the slide rail.

[0009] In some embodiments, the elastic arm has a bending structure, the bending structure including a first end, a second end, and a bending portion located between the first end and the second end, the first end being connected to the button, and the second end being connected to the switch trigger piece.

[0010] In some embodiments, the number of the resilient arms is at least two, and the at least two resilient arms are arranged symmetrically with respect to the center line of the button.

[0011] In some embodiments, the button has at least one protruding structure on its top surface.

[0012] In some embodiments, the button A pressing portion; a first sub-part having an elongated shape, the first sub-part being provided on a side of the pressing part facing the switch member, the first sub-part having an intermediate part connected to the pressing part; a second sub-portion and a third sub-portion extending from each end of the first sub-portion toward the switch member along a direction substantially perpendicular to the first sub-portion, Here, at least one of the second sub-part and the third sub-part is configured to slide on a slide rail in accordance with the movement of the button.

[0013] In some embodiments, a compression spring is disposed between an end of the slide rail remote from at least one of the second sub-section and the third sub-section and a free end of at least one of the second sub-section and the third sub-section.

[0014] Some embodiments of the present invention provide an automatic cleaning device that includes the position arrival switch assembly described in the embodiments.

[0015] In some embodiments, the automatic cleaning device comprises: A moving platform; a liquid storage tank detachably mounted on the mobile platform; The position arrival switch assembly is provided on the side of the liquid storage tank facing the bottom surface of the moving platform.

[0016] In some embodiments, the mobile platform includes a forward portion and an aft portion, and the liquid storage tank and the position arrival switch assembly are both located in the aft portion.

[0017] In some embodiments, a groove is formed in a sidewall of the moving platform, the groove is located below the liquid storage tank, and the pressing portion of the button is located within the groove. [Effects of the Invention]

[0018] Compared with the prior art, the embodiments of the present invention have the following technical advantages:

[0019] The present invention provides a position arrival switch assembly and an automatic cleaning device, wherein the position arrival switch assembly includes an elastic arm connecting a button and a switch trigger piece, and when the switch trigger piece moves to the limiting member, the elastic member pressing the switch member triggers the switch member, and then, due to the elasticity of the elastic arm, the button still moves further toward the switch member under the action of an external force, so that the button stroke after the switch member is triggered increases, and the robustness of the automatic cleaning device when it reaches a predetermined position in the liquid replenishment pile is improved.

[0020] The accompanying drawings herein are incorporated into this specification as part of the present specification, illustrate embodiments of the present invention, and are used together with the specification to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these accompanying drawings without creative work. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of an automatic cleaning device according to an embodiment of the present disclosure; [Figure 2] 1 is a schematic diagram of a bottom structure of an automatic cleaning device according to an embodiment of the present disclosure; [Figure 3] 1 is an exploded view of an automatic cleaning device according to an embodiment of the present disclosure. [Figure 4]FIG. 1 is a structural diagram of a support platform of an automatic cleaning device according to an embodiment of the present disclosure. [Figure 5] 1 is a structural diagram of a vibration member of an automatic cleaning device according to an embodiment of the present disclosure; [Figure 6] 1 is a structural diagram of a vibration member according to an embodiment of the present disclosure; [Figure 7] 1 is a schematic diagram of an assembly structure of a cleaning substrate according to one embodiment of the present disclosure. [Figure 8] 1 is a structural diagram of a clean water pump driven by a motor according to an embodiment of the present disclosure. [Figure 9] 1 is a structural diagram of a lifting module driven by a motor according to an embodiment of the present disclosure; [Figure 10] Overall structural diagram of an automatic cleaning device according to an embodiment of the present disclosure. [Figure 11] Structural diagram of a liquid storage tank according to an embodiment of the present disclosure. [Figure 12] 1 is a partial cross-sectional view of a liquid storage tank according to an embodiment of the present disclosure; [Figure 13] 1 is a structural schematic diagram of a position arrival switch assembly according to an embodiment of the present invention; [Figure 14] Enlarged view of area M in Figure 13 DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to clarify the objectives, technical solutions and advantages of the present disclosure, 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, other embodiments that can be obtained by those skilled in the art without any creative work are all included in the protection scope of the present disclosure.

[0023] The terms used in the embodiments of the present disclosure are used only for the purpose of describing particular embodiments and are not intended to limit the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a," "the," and "the" are also intended to encompass the plural form unless the context clearly dictates otherwise, and "plurality" generally includes at least two.

[0024] It should be understood that the term "and / or" used herein merely describes the relation between related objects, and for example, A and / or B can have 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" relation.

[0025] It should be understood that, although the embodiments of the present disclosure are described using terms such as first, second, and third, 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.

[0026] It should be noted that the terms "comprises," "has," or any other variation thereof are intended to cover a non-exclusive inclusion, and 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 with the phrase "comprising one of..." does not exclude the presence of other elements of the same type in the product or device of said element.

[0027] Alternative embodiments of the present disclosure will now be described with reference to the accompanying drawings.

[0028] 1 and 2 are structural schematic diagrams of an automatic cleaning device according to an exemplary embodiment. As shown in FIGS. 1 and 2, the automatic cleaning device 10 may be a vacuum ground suction robot, a mop / brush robot, a window climbing robot, etc., and the automatic cleaning device may include a moving 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.

[0029] 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 operates on a floor surface, with the floor surface being the operating surface; a window cleaning robot, where the automatic cleaning device operates 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 operates on the interior surface of a pipe, with the interior surface of the pipe being the operating surface. For illustrative purposes only, the following description will use a mopping robot as an example.

[0030] In some embodiments, mobile platform 100 may be an autonomous mobile platform or a non-autonomous mobile platform. An autonomous mobile platform means that mobile platform 100 itself automatically and adaptively makes operational decisions in response to unexpected environmental inputs. A non-autonomous mobile platform cannot make operational decisions in response to unexpected environmental inputs, but can operate according to a predetermined procedure or logic. Therefore, if mobile platform 100 is an autonomous mobile platform, the target direction may be determined autonomously by an automatic cleaning device. If mobile platform 100 is a non-autonomous mobile platform, the target direction may be set by a system or manually. If mobile platform 100 is an autonomous mobile platform, mobile platform 100 includes a front portion 111 and a rear portion 110.

[0031] 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 each piece of equipment.

[0032] 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 rear 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 part of the automatic cleaning device tilts upward and the rear part tilts downward, this is referred to as "pitch up," and when the front part of the automatic cleaning device tilts downward and the rear part 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."

[0033] 2, cliff sensors 123 are provided at 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 retreating, thereby preventing damage to the automatic cleaning device. The "front" refers to the same side as the traveling direction of the automatic cleaning device, and the "rear" refers to the opposite side to the traveling direction of the automatic cleaning device.

[0034] The position determining device 121 includes, but is not limited to, a camera, a laser distance sensor (LDS).

[0035] Each assembly in the sensing system 120 can operate independently or together to more accurately achieve its intended function. The cliff sensor 123 and ultrasonic sensor recognize the cleaning surface and determine the physical properties 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.

[0036] 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.

[0037] A buffer 122 is provided on the front part 111 of the mobile platform 100, and during the cleaning process, the drive wheel assembly 141 pushes the automatic cleaning device to run on the floor surface. The buffer 122 detects one or more events (or objects) in the running path of the automatic cleaning device via a sensor system, for example, an infrared sensor, and the automatic cleaning device controls the drive wheel assembly 141 based on the events (or objects), for example, an obstacle or a wall, detected by the buffer 122 so that the automatic cleaning device responds to the event (or object) and, for example, moves away from the obstacle.

[0038] 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 an application processor, communicating with a 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, uses a positioning algorithm, such as SLAM, to draw an instantaneous map of the environment in which the automatic cleaning device is located based on obstacle information fed back from the laser distance measuring device, and 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.

[0039] Specifically, the control system 130 refers to 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.

[0040] 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 move 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. For more precise control of the movement of the device, the drive system 140 preferably includes a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are symmetrically arranged along a horizontal axis defined by the mobile platform 100.

[0041] In order for the automatic cleaning device to move more stably on the floor surface or have higher mobility, the automatic cleaning device may include one or more steering assemblies 142, and the steering assembly 142 may be a driven wheel or a driving wheel, and its 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.

[0042] The drive motor 146 provides power to rotate the drive wheel assembly 141 and / or the steering assembly 142 .

[0043] The drive wheel assembly 141 may be detachably 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, and maintain contact and traction with the floor surface with a constant ground force by means of an elastic element such as a tension spring or compression spring, while the cleaning module 150 of the automatic cleaning device also contacts the surface to be cleaned with a constant pressure.

[0044] 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 all connected to a single-chip microcomputer control circuit. The host is connected to the charging pile via charging electrodes located on the side or bottom of the device for charging. If dust adheres to the exposed charging electrodes, the resin around the electrodes will melt and deform due to the charge accumulation effect during charging, and the electrodes themselves will also deform, preventing normal charging.

[0045] The human interaction system 170 may include buttons on the host panel, which are used by the user to select functions, 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 a mobile phone client program. In the case of a route navigation type cleaning device, the mobile phone client can display a map of the device's environment and the device's location to the user, thereby providing the user with more abundant and user-friendly function items.

[0046] The cleaning module 150 includes a dry cleaning module 151 and / or a wet cleaning module 400 .

[0047] As shown in Figure 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, sweeps up dust on the floor 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 the dust pickup efficiency (DPU). The 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 a typical plug-in vacuum cleaner, 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 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.

[0048] According to a specific embodiment of the present disclosure, as shown in Figures 3 to 5, the present disclosure provides a wet cleaning module 400 for cleaning 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 of the cleaning head 410 that comes into contact with the surface to be cleaned, and the back and forth movement generates high-frequency friction with the surface to be cleaned, thereby removing dirt from the surface to be cleaned.

[0049] The higher the friction frequency, the more friction times per unit time. High-frequency reciprocating motion, also known as reciprocating vibration, has a much higher cleaning ability than ordinary reciprocating motion, such as rotational or frictional cleaning. Optionally, the friction frequency is similar to that of sound waves, and the cleaning effect is much better than that of rotational frictional cleaning with several tens of turns per minute. Meanwhile, the tufts on the surface of the cleaning head are more aligned and spread in the same direction due to high-frequency vibration, resulting in a more uniform cleaning effect overall. Unlike the low-frequency rotation, which increases frictional force solely through downward pressure, the tufts do not spread in the same direction due to downward pressure alone. As a result, after high-frequency vibration cleaning, the water marks on the operating surface are more uniform and no chaotic water stains remain.

[0050] The reciprocating motion may be repeated movement along any one or more directions within the operating surface, or vibration perpendicular to the operating surface, but is not strictly limited to this. Alternatively, the cleaning module's reciprocating motion may be approximately perpendicular to the device's direction of travel. Reciprocating motion parallel to the device's direction of travel can cause instability during operation. The thrust and resistance along the direction of travel can make the drive wheels more susceptible to slippage. This effect is particularly pronounced when a wet cleaning module is included. A wet operating surface increases the likelihood of slippage. Slippage not only impacts 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 determining their location or drawing maps. Frequent slippage can also have a significant impact on SLAM (Sliding Aids Mechanism). Therefore, slippage must be minimized. In addition to slippage, the cleaning head's movement along the device's direction of travel can constantly push the device back and forth, resulting in unstable operation.

[0051] As an optional embodiment of the present invention, 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, configured to support the cleaning head 410, and driven by the drive platform 421 to move up and down.

[0052] In an optional embodiment of the present invention, a lifting module is provided between the cleaning module 150 and the mobile platform 100, configured to allow the cleaning module 150 to have better contact with the surface to be cleaned or to use different cleaning strategies for surfaces to be cleaned of different materials.

[0053] Optionally, 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 pass through the obstacle more easily via the lifting module.

[0054] Optionally, the wet cleaning module 400 is connected to the moving platform 100 via an active lifting module, and when the wet cleaning module 400 is temporarily not working or the surface to be cleaned cannot be cleaned by the wet cleaning module 400, the active lifting module can lift the wet cleaning module 400 and separate it from the surface to be cleaned to realize a change of cleaning means.

[0055] As shown in Figures 4 and 5, the drive platform 421 includes a motor 4211 that is provided on the side of the drive platform 421 facing 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 provided on the opposite side of the drive platform 421 from the motor 4211, connected to the drive wheel 4212, and moves back and forth under the asymmetric rotation of the drive wheel 4212.

[0056] 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.

[0057] The motor 4211 simultaneously transmits power to the cleaning head 410, the driving platform 421, the support platform 422, the water supply mechanism, the liquid storage tank, etc. through 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, a chain transmission, a belt transmission, a worm gear, etc.

[0058] 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.

[0059] 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.

[0060] The motor 4211 is connected to the driving wheel 4212, the vibration member 4213, the connecting rod 4214, and the vibration damping device 4215 via a power transmission device. Here, the vibration member 4213 and the connecting rod 4214 form a substantially 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 damping device 4215 has the function of damping and reducing jitter of the movement caused by the driving wheel 4212, so that the vibration member 4213 can stably vibrate within the movement range that can be provided by the support platform 422. Optionally, the vibration damping device 4215 is made of a flexible material, preferably a rubber structure, and the vibration damping device 4215 is fitted to the connecting rod 4214. On the other hand, the vibration damping device 4215 can protect the vibration member 4213 from damage caused by collision with the driving 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 in the active area 412 along the surface to be cleaned. At this time, the clean water pump causes clean water to flow out of the liquid storage tank and through the water discharge device 4217 to spray the clean water onto the cleaning head 410, which then moves back and forth to clean the surface to be cleaned.

[0061] 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 to this, the control system 130 can automatically and dynamically adjust the rotation speed of the motor 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.

[0062] 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 of the water pump may be automatically and dynamically adjusted to be smaller, and 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 of 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 (i.e., higher frequency) of the cleaning head 410 and a larger amount of water are required to clean an uneven floor surface.

[0063] 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, and 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 fewer reciprocating movements of the cleaning head 410 and a smaller amount of water from the water pump.

[0064] As an alternative embodiment of the present invention, the support platform 422 includes a cleaning substrate 4221 movably mounted on the support platform 422, and the cleaning substrate 4221 moves substantially back and forth under the vibration of the vibrating member 4213. Optionally, as shown in Fig. 7, the cleaning substrate 4221 includes an assembly notch 42211 provided at a position where it contacts the vibrating member 4213, and when the support platform 422 is connected to the driving platform 421, the vibrating member 4213 is assembled to the assembly notch 42211, and the cleaning substrate 4221 moves substantially back and forth synchronously with the vibrating 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 damping device, the movement of the cleaning substrate 4221 is essentially reciprocating. The cleaning substrate 4221 is located at a portion of the support platform 422, and the local vibrations can cause the vibration frequency to increase, for example, to reach the sonic frequency range. The movable and fixed members of the drive platform 421 are connected in a flexible manner to restrict 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.

[0065] Further, 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 which detachably connects the support platform 422 to the engaging claws 4216 of the drive platform 421, so that the support platform 422 is detachably mechanically 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.

[0066] 3, the cleaning head 410 includes a movable region 412 connected to the cleaning substrate 4221 and adapted to move approximately back and forth along the cleaning surface when driven by the cleaning substrate 4221. The movable region 412 is located approximately at the center of the cleaning head 410.

[0067] Optionally, 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.

[0068] Optionally, the cleaning head 410 includes a fixed area 411 connected to the bottom of the support platform 422 via the at least one assembly area 4224, and the fixed area 411 cleans at least a portion of the operating surface as the support platform 422 moves.

[0069] Furthermore, the cleaning head 410 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 slide buckle 414 extending along an edge of the cleaning head 410 and removably attached to an engagement position 4225 of the support platform 422.

[0070] In this embodiment, as shown in Figure 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 to achieve reciprocating movement. When the cleaning head 410 works, the cleaning head 410 is always in contact with the surface to be cleaned.

[0071] 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., a liquid outlet of the liquid storage tank, where the cleaning liquid flows to the water discharge device 4217 through 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 through 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 can be evenly applied to the operating surface through the distribution port.

[0072] The water delivery mechanism further includes a clean water pump 4219 and / or a clean water pump pipe 4218, which 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.

[0073] The clean water pump 4219 may be connected to the connection member of the water dispensing device and configured to extract the cleaning liquid from the liquid storage tank and pump it to the water dispensing device. The clean water pump may be a gear pump, a vane pump, a plunger pump, a peristaltic pump, etc.

[0074] The water supply mechanism sucks the cleaning liquid from the liquid storage tank via the clean water pump 4219 and the 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.

[0075] Furthermore, as shown in FIG. 8, the motor 4211 drives the clean water pump 4219 to move peristally via the gear set 42193, and 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.

[0076] 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, the cable 42194 is wound around the drive platform 421, and the cable gear 42196 raises and lowers the cable 42194, thereby pulling the cable 42194 and raising and lowering the drive platform 421. The cable gear 42196 and the cable 42194 are the core components of the lifting module.

[0077] A clutch 42195 is provided between the gear set 42193 and the cable gear 42196. The clutch 42195 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 realizing 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 combination design of the gear set 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 the lifting and vibration control. Optionally, two motors can be used to control the three moving modules, but adding motors increases costs.

[0078] The cleaning module of the automatic cleaning device includes a dry cleaning module and a wet cleaning module, which can provide more complete cleaning functions. 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 to be cleaned. This allows the cleaning robot to clean multiple times while passing through an area only once, greatly improving the cleaning effect, especially in heavily soiled areas.

[0079] In cooperation with a sensor capable of detecting the surface type of the surface to be cleaned, such as a surface media sensor, the lifting module can perform cleaning operations for different surfaces to be cleaned, for example, by lifting the wet cleaning module for carpet surfaces and lowering the wet cleaning module for surfaces such as floors / floor tiles to achieve a more complete cleaning effect.

[0080] In an embodiment of the present disclosure, the automatic cleaning device 10 includes a liquid storage tank 3000, and the liquid storage tank 3000 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.

[0081] 11 , a second assembly 3004 is provided on the liquid storage tank 3000, and the second assembly 3004 is connected to a base station, which injects cleaning liquid into the liquid storage tank 3000 of the automatic cleaning device 10 through 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.

[0082] 12 , a valve 17 is provided at the liquid refill port 3005 of the liquid storage tank 300, and the valve 17 is provided so as to be openable and closable, thereby controlling the communication and closure between the liquid refill port 3005 and the liquid storage tank 3000. A pipe 18 is provided in the liquid storage tank 3000, and the valve 17 is provided at one end of the pipe 18.

[0083] 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 another embodiment 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 liquid refilling port 3005 is disconnected from the liquid storage tank 3000, 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 check valve, etc.

[0084] 2, 10 and 11, the liquid storage tank 3000 is provided on the mobile platform 100 of the automatic cleaning device 10, specifically, the liquid storage tank 3000 is detachably provided on the rear section 110 of the mobile platform 100. The side wall of the liquid storage tank 3000 forms a part of the side wall of the rear section 110. In the embodiment of the present disclosure, the automatic cleaning device further includes a position arrival switch assembly, which, for example, during the operation process of the automatic cleaning device returning to the liquid replenishment pile to replenish cleaning liquid, instructs the automatic cleaning device 10 to return to a predetermined position on the liquid replenishment pile and transmits a position arrival signal to instruct the automatic cleaning device 10 to operate the subsequent supplemental cleaning liquid.

[0085] The position arrival switch assembly is provided within the mobile platform 100, specifically, the position arrival switch assembly is provided, for example, in the rear portion 110, on the side of the liquid storage tank 3000 facing the bottom surface of the mobile platform 100.

[0086] FIG. 13 is a structural schematic diagram of a position arrival switch assembly according to an embodiment of the present invention, and FIG. 14 is an enlarged view of area M in FIG. 13. As shown in FIGS. 13 and 14, an embodiment of the present invention provides a position arrival switch assembly 500 that is assembled to an automatic cleaning device 10 and configured to indicate whether the automatic cleaning device has returned to a predetermined position on a pile body, such as a liquid replenishment pile.

[0087] The position arrival switch assembly 500 includes a switch member 501, a button 502, a resilient arm 503, and a switch trigger piece 504. The switch member 501 is fixed to the automatic cleaning device 10, for example, and transmits a position arrival signal in response to being triggered by the switch trigger piece 504. Specifically, the switch member 501 is connected to another assembly, for example, via a circuit, and in response to being triggered by the switch trigger piece 504, the switch member 504 generates a position arrival signal and transmits the position arrival signal to the outside via the circuit. For example, the automatic cleaning device 10 and / or a liquid replenishment pile can replenish cleaning liquid in the liquid storage tank 3000 of the automatic cleaning device 10 in response to the position arrival signal.

[0088] The button 502 is configured to move toward the switch member 501 under the action of an external force. Specifically, during the operation process of the automatic cleaning device 10 returning to the liquid replenishment pile to replenish cleaning liquid, for example, during the process of the automatic cleaning device 10 entering the pile, a protrusion on the liquid replenishment pile contacts the button 502, and as the automatic cleaning device 10 moves further toward the liquid replenishment pile, the button 502 moves toward the switch member 501 by pressing the protrusion, i.e., the external force is provided by the protrusion. In some embodiments, the automatic cleaning device 10 returns to the liquid replenishment pile in a retreating manner, i.e., the rear section 110 of the mobile platform 100 enters the pile before the front section 111, which is determined by the positions of the liquid storage tank 3000 and the liquid replenishment port 3005. In some embodiments, the liquid storage tank 3000 is located in the rear section 110, and the liquid replenishment port 3005 is located at approximately the middle position of the rear end of the automatic cleaning device 10.

[0089] An elastic arm 503 extends away from the button 502 toward the side of the switch member 501, connecting the button 502 and a switch trigger piece 504, and the switch trigger piece 504 is configured to connect to one end of the elastic arm 503 away from the button 502. When an external force is applied to the button 502, the button 502 presses the switch trigger piece 504 so that it moves toward the switch member 501, thereby triggering the switch member 501.

[0090] 13 and 14 , the switch member 501 includes a switch member body 5011 and an elastic member 5012, and the elastic member 5012 extends from a side of the switch member body 5011 facing the button 502 to the button 502. The elastic member 5012 is, for example, substantially conical, with the bottom of the cone facing the switch member body 5011 and the tip of the cone pointing toward the button 502.

[0091] In some embodiments, when no external force is acting on the button 502, i.e., when the button 502 is not pressed by a protrusion on the liquid replenishment pile, the switch trigger piece 504 contacts the end of the elastic member 5012 facing the button 502, and no force is acting on the elastic member 5012. As the automatic cleaning device 10 enters the pile, the button 502 moves toward the switch member 501 under the action of an external force, and in response, the switch trigger piece 504 presses the elastic member 5012, causing the elastic member 5012 to be compressed, i.e., the end of the elastic member 5012 facing the button 502 moves toward the switch member body 5011 under the pressure of the switch trigger piece, and at this time the elastic arm 503 is also compressed.

[0092] In response to the elastic member 5012 being compressed a predetermined amount, the switch member 501 generates and transmits a position arrival signal to instruct the automatic cleaning device 10 and / or liquid replenishment pile to perform a step of starting to replenish cleaning liquid. That is, the switch member 501 generates and transmits the position arrival signal after the end of the elastic member 5012 facing the button 502 has moved a predetermined distance toward the switch member body 5011. The triggering of the switch member 501 by the switch trigger piece 504 is considered to be a displacement trigger.

[0093] 13 and 14 , the position arrival switch assembly 500 further includes a limiting member 505, which is disposed on a side of the switch member body 5011 facing the button 502, and is configured to prevent the switch trigger piece 504 from continuously compressing the elastic member 5012 in response to the elastic member 5012 being compressed by the predetermined amount, thereby preventing the elastic member 502 from being damaged due to excessive compression of the elastic member 502. That is, under pressure of the button 502, the switch trigger piece 504 compresses the elastic member 5012 until the switch trigger piece 504 reaches the limiting member 505 and is blocked by the limiting member 505, at which time the elastic member 5012 is compressed by the predetermined amount, the switch member 501 is in a triggered state, and transmits a position arrival signal.

[0094] At this time, the switch member 501 has already sent a position arrival signal, but there may be an error between the position of the automatic cleaning device and the preset arrival position on the liquid replenishment pile. As the automatic cleaning device 10 further enters the pile, the button 502 moves further toward the switch member 501 under the action of an external force from the protrusion, the switch trigger piece 504 is blocked by the limiting member 505, and the elastic arm 503 is further compressed until the automatic cleaning device 10 reaches the limit of pile entry. In this case, the button stroke after the switch member 501 is triggered increases, improving the robustness of the automatic cleaning device when it reaches the predetermined position on the liquid replenishment pile.

[0095] 13 and 14 , the position arrival switch assembly further includes a slide rail 506 configured to support the switch trigger piece 504 so that the switch trigger piece 504 is slidable on the slide rail. The number of slide rails 506 is, for example, two, and the two slide rails 506 extend along the direction in which the button 502 moves and limit the direction in which the switch trigger piece 504 moves.

[0096] 13 and 14, the elastic arm 503 has a bending structure, the bending structure includes a first end, a second end, and a bending portion located between the first end and the second end, the first end is connected to the button 502, and the second end is connected to the switch trigger piece 504. In other embodiments, the elastic arm may have another elastic structure, for example, a telescopic arm.

[0097] 13 and 14, in some embodiments, the number of the elastic arms 503 is, for example, two, and the two elastic arms 503 are arranged symmetrically with respect to the center line ML of the button 502. Specifically, the bending portions of the two elastic arms 503 are farther from the center line ML of the button 502 than the first and second ends thereof.

[0098] In some embodiments, as shown in FIGS. 13 and 14 , at least one protrusion 5025 is provided on the upper surface of the button 502, and a cover on the bottom of the moving platform 100 covers the position arrival switch assembly. The cover is omitted in FIGS. 13 and 14 to show the specific structural details of the position arrival switch assembly. The "upper surface of the button 502" refers to the generally concave surface of the button 502 shown in FIGS. 13 and 14 , which faces the cover. Under normal circumstances, the button 502 does not come into contact with the cover during movement. However, after multiple movements of the button 502 or aging, the button 502 may deform during movement and rub against the cover. In this embodiment, by providing the protrusion 5025, even if the button 502 deforms during movement and comes into contact with the cover, friction only occurs against the protrusion 5025. This prevents the button 502 from being worn due to friction between the relatively large area of ​​the upper surface of the button 502 and the cover, which would affect the movement of the button 502.

[0099] 13 and 14, the button 502 includes a pressing portion 5024, a first sub-portion 5021, a second sub-portion 5022, and a third sub-portion 5023. The pressing portion 5024 is configured to contact a protruding portion and receive an external force that causes the protruding portion to press the button 502.

[0100] The first sub-part 5021 has an elongated shape and is provided on the side of the pressing part 5024 that faces the switch member 501, with the middle part of the first sub-part 5021 connected to the pressing part 5024. A first end of the elastic arm 503 is connected to the side of the first sub-part 5021 that faces the switch member 501 and is positioned approximately near the middle of that side.

[0101] The second sub-portion 5022 and the third sub-portion 5023 each extend from both ends of the first sub-portion 5021 toward the switch member 501 in a direction substantially perpendicular to the first sub-portion 5021. At least one of the second sub-portion 5022 and the third sub-portion 5023 is configured to slide on a slide rail 507 in conjunction with movement of the button 502. The slide rail 507 extends in the direction in which the button 502 moves, and is configured to guide the button 502.

[0102] 13 and 14, the protrusion 5025 includes a first protrusion 50251 and a second protrusion 50252, the first protrusion 50251 being provided at an intermediate position of the first sub-section 5021 and elongated, for example, with its longitudinal direction parallel to the moving direction of the button 502, and the second protrusions 50252 being provided at both ends of the first sub-section 5021 and at ends of the second sub-section 5022 and the third sub-section 5023 that are farther from the first sub-section 5021 and are circular, for example. A person skilled in the art can understand that the number, positions, and shapes of the first protrusions 50251 and the second protrusions 50252 are not limited to those shown in the embodiments of FIGS.

[0103] In some embodiments, a compression spring 508 is provided between an end of the slide rail 507 remote from at least one of the second sub-portion 5022 and the third sub-portion 5023 and a free end of at least one of the second sub-portion 5022 and the third sub-portion 5023. The compression spring 508 restores the button 502 to its initial position in response to the elimination of the external force applied to the button 502. This can avoid the problem of incomplete restoration that occurs when restoring the button 502 solely by the elastic restoration of the elastic arm.

[0104] In some embodiments, the number of slide rails 507 is two, and each slide rail 507 is configured to guide the second sub-portion 5022 and the third sub-portion 5023, respectively.

[0105] 2, 10, 11, 13 and 14, a groove 1001 is provided on the side wall of the moving platform 100 of the automatic cleaning device 10, the groove 1001 is located below the liquid storage tank 3000, and the pressing portion 5024 of the button 502 is provided in the groove 1001, and the pressing portion 5024 is located approximately directly below the liquid refill port 3005.

[0106] In some embodiments, the position arrival switch assembly 500 mounted on the mobile platform 100, specifically the rear portion 110, is covered by the bottom of the mobile platform rather than being exposed to the outside to avoid external interference adversely affecting the position arrival signal.

[0107] The position arrival switch assembly provided by the present invention includes an elastic arm connecting the button and the switch trigger piece, and the switch trigger piece moves to the limiting member to press the elastic member of the switch member. After triggering the switch member, the elasticity of the elastic arm allows the button to still move further toward the switch member under the action of external force, thereby increasing the button stroke after the switch member is triggered and improving the robustness of the automatic cleaning device when it reaches the predetermined position of the liquid replenishment pile.

[0108] Finally, it should be noted that the embodiments in this specification are gradually described by focusing on the differences between each embodiment and other embodiments, and that for the same and similar parts of each embodiment, it is sufficient to refer to each embodiment with respect to each other. Furthermore, since the system or device disclosed in the embodiment corresponds to the method disclosed in the embodiment, the description is relatively simple, and it is sufficient to refer to the description in the method section.

[0109] 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

1. a position arrival switch assembly assembled to the automatic cleaning device and configured to indicate whether the automatic cleaning device has returned to a predetermined position on the pile body, the position arrival switch assembly comprising: A switch member; a button configured to move toward the switch member under the action of an external force; a resilient arm extending from a surface of the button facing the switch member in a direction away from the button; a switch trigger piece connected to one end of the elastic arm remote from the button, the switch member is configured to transmit a position arrival signal in response to being triggered by the switch trigger piece; The position arrival switch assembly further includes a limiting member for preventing the switch trigger piece from continuing to move, and when the switch trigger piece is blocked by the limiting member, when the button moves toward the switch member under the action of an external force, the switch trigger piece does not move and the elastic arm is compressed.

2. The switch member is A switch member body; an elastic member extending from a side of the switch member body facing the button toward the button, 2. The position arrival switch assembly of claim 1, wherein in response to the button moving toward the switch member, the switch trigger piece presses against the elastic member to compress the elastic member, and in response to the elastic member being compressed by a predetermined amount, the switch member transmits a position arrival signal.

3. A position arrival switch assembly as described in Claim 2, characterized in that the limiting member is provided on the side of the switch member body facing the button and is configured to prevent continued compression of the elastic member by the switch trigger piece in response to the elastic member being compressed by the predetermined amount.

4. The position arrival switch assembly includes:

2. The position arrival switch assembly of claim 1, further comprising a slide rail configured to support the switch trigger piece such that the switch trigger piece is slidable on the slide rail.

5. 2. The position arrival switch assembly of claim 1, wherein the elastic arm has a bending structure, the bending structure including a first end, a second end, and a bending portion located between the first end and the second end, the first end being connected to the button, and the second end being connected to the switch trigger piece.

6. 2. The position arrival switch assembly of claim 1, wherein the number of the resilient arms is at least two, and the at least two resilient arms are arranged symmetrically with respect to a center line of the button.

7. 2. The position arrival switch assembly of claim 1, wherein the button is provided with at least one protruding structure on an upper surface thereof.

8. The button is A pressing portion; a first sub-part having an elongated shape, the first sub-part being provided on a side of the pressing part facing the switch member, the first sub-part having an intermediate part connected to the pressing part; a second sub-portion and a third sub-portion extending from each end of the first sub-portion toward the switch member along a direction substantially perpendicular to the first sub-portion, 2. The position arrival switch assembly of claim 1, wherein at least one of the second sub-portion and the third sub-portion is configured to slide on a slide rail in association with movement of the button.

9. 9. The position arrival switch assembly of claim 8, wherein a compression spring is disposed between an end of the slide rail remote from at least one of the second sub-portion and the third sub-portion and a free end of at least one of the second sub-portion and the third sub-portion.

10. An automatic cleaning device comprising a position arrival switch assembly according to any one of claims 1 to 9.

11. The automatic cleaning device is A moving platform; a liquid storage tank detachably mounted on the mobile platform; 11. The automatic cleaning device of claim 10, wherein the position arrival switch assembly is provided on a side of the liquid storage tank facing the bottom surface of the moving platform.

12. 12. The automatic cleaning device of claim 11, wherein the moving platform includes a front portion and a rear portion, and the liquid storage tank and the position arrival switch assembly are both located in the rear portion.

13. 12. The automatic cleaning device according to claim 11, wherein a groove is formed on a side wall of the moving platform, the groove is located below the liquid storage tank, and the pressing portion of the button is located within the groove.

Images