Automatic cleaning devices and systems

Abstract

The automatic cleaning device includes a moving platform (100) configured to automatically move an operation surface, the moving platform (100) including a cover plate (800) constituting at least a part of the top surface of the moving platform (100), and a button assembly (900) assembled to the cover plate (800), the button assembly (900) including a button cap (910) and a bracket (920), the button cap (910) being assembled to the bracket (920), the bracket (920) including a stepped structure (930) extending along the circumferential direction. The automatic cleaning device provides a sufficient space below the button assembly (900) to accommodate more components, and at the same time increases the elasticity of the bracket (920), making it easier for the button assembly (900) to return to its original position after being pressed.

Description

[Technical Field]

[0001] (Related Applications) This application is based on and claims priority from a Chinese patent application filed on January 11, 2022, bearing application number 202220066057.1, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of cleaning robots, and in particular to automatic cleaning devices and systems. [Background technology]

[0003] In modern life, cleaning robots are becoming increasingly popular, bringing convenience to household life. Cleaning robots include sweeping robots, mopping robots, and integrated sweeping and mopping robots. As cleaning robots become more popular, their functions and structures become more complex, leading to higher production costs.

[0004] In existing technology, some cleaning robots have added structures and functions such as automatic charging, automatic dust collection, and lifting and vibrating, making them more intelligent. However, the complexity of each component has increased, making subsequent maintenance and inspection inconvenient. Summary of the Invention

[0005] According to a specific embodiment of the present application, the present application provides an automatic cleaning device, the automatic cleaning device comprising: a moving platform configured to automatically move an operating surface, the moving platform including a cover plate forming at least a portion of a top surface of the moving platform; a button assembly assembled to the cover plate; The button assembly includes a button cap and a bracket, the button cap is assembled to the bracket, and the bracket includes a stepped structure extending along a circumferential direction.

[0006] In some embodiments, the step structure is a step that rises continuously from the outside to the inside in an assembled state.

[0007] In some embodiments, the bracket includes at least one sidewall, the assembly being formed inside the at least one sidewall.

[0008] In some embodiments, the bracket includes a first sidewall extending continuously circumferentially around the outer periphery of the bracket and a second sidewall extending continuously circumferentially around the interior of the bracket, with a first assembly portion formed between the first and second sidewalls and a second assembly portion formed within the second sidewall.

[0009] In some embodiments, at least a portion of the step structure is located on the first assembly portion and another portion of the step structure is located on the second assembly portion.

[0010] In some embodiments, a positioning hole is provided at each end of the bracket, and a positioning pillar is provided on the underside of the cover plate corresponding to the positioning hole, and the positioning pillar passes through the positioning hole to fix the bracket.

[0011] In some embodiments, the bracket further includes a button plate connected via at least one elastic arm, the button plate being configured to move downward under the action of an external force to perform a pressing function, and the elastic arm being configured to return the button plate to its original position.

[0012] In some embodiments, the button cap includes a pressing body and at least one protrusion extending downwardly around the pressing body, and when the button cap is assembled to the bracket, the at least one protrusion fits into an assembly formed on the inside of the at least one side wall.

[0013] In some embodiments, the button cap includes a first protrusion and a second protrusion extending downwardly around the pressing body, and when the button cap is assembled to the bracket, the first protrusion and the second protrusion are fitted to the first assembly part and the second assembly part, respectively.

[0014] In some embodiments, the button cap includes a third protrusion connecting the first protrusion and the second protrusion and extending upwardly around the pressing body.

[0015] In some embodiments, the button cap further includes a first groove and a second groove extending around the third protrusion along either side of the third protrusion, wherein the depth of the first groove is greater than the depth of the second groove.

[0016] In some embodiments, the cover plate has a button mounting hole, the pressing body is assembled to the button mounting hole, and the top surface of the pressing body and the top surface of the cover plate are substantially flush with each other or slightly lower than each other.

[0017] In some embodiments, the cover plate further includes at least one waterproof rib extending downward around the button mounting hole, and the at least one waterproof rib is assembled to the first groove and / or the second groove.

[0018] In some embodiments, a sidewall of the at least one waterproof rib is provided with a bump, and the at least one waterproof rib is assembled to the first groove and / or the second groove by interference fit via the bump.

[0019] In some embodiments, the cover plate includes a first waterproof rib and a second waterproof rib extending downward around the button mounting hole, the first waterproof rib being assembled to the first groove and the second waterproof rib being assembled to the second groove.

[0020] In some embodiments, the second protrusion has two spaced apart recesses, and in an assembled state, the recesses are configured to receive the button plate.

[0021] In some embodiments, a downwardly extending light blocking arm is provided in the center of the two spaced apart recesses.

[0022] Compared with the prior art, the embodiments of the present application have the following technical effects:

[0023] The present application provides an automatic cleaning device, in which a button assembly is assembled to a cover plate of the automatic cleaning device, the button assembly including a soft rubber button cap and a hard rubber bracket, the button cap being assembled to the bracket, the bracket including a circumferentially extending stepped structure, the stepped structure being a continuously rising step in the assembled state, the continuously rising stepped structure providing sufficient space below the button assembly to accommodate more components, increasing the elasticity of the bracket, making it easier for the button assembly to return to its original position after being pressed, and further increasing the installable length of the waterproof rib on the top cover, thereby improving the waterproof effect of the button assembly.

[0024] The accompanying drawings herein are incorporated into and constitute a part of this specification, illustrating embodiments that are applicable to the present application, and are used together with the description to explain the principles of the present application. Obviously, the accompanying drawings in the following description are merely some embodiments of the present application, and those skilled in the art can obtain other drawings based on these accompanying drawings without creative work. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view of an automatic cleaning device according to some embodiments of the present application; [Figure 2] 1 is a schematic diagram of the bottom structure of an automatic cleaning device according to some embodiments of the present application; [Figure 3]1 is a schematic diagram of a button assembly structure of an automatic cleaning device according to some embodiments of the present application; [Figure 4] 1 is a schematic top view of a button bracket of an automatic cleaning device according to some embodiments of the present application; [Figure 5] 1 is a schematic diagram of a bottom view of a button bracket of an automatic cleaning device according to some embodiments of the present application; [Figure 6] 1 is a schematic top view of a button cap of an automatic cleaning device according to some embodiments of the present application; [Figure 7] 1 is a schematic view of the bottom of the button cap of an automatic cleaning device according to some embodiments of the present application; [Figure 8] 1 is a schematic cross-sectional view of a button assembly structure of an automatic cleaning device according to some embodiments of the present application; [Figure 9] Schematic structural diagram of the cover plate of the automatic cleaning device according to some embodiments of the present application; [Figure 10] FIG. 10 is an enlarged bottom view of the cover plate at point D in FIG. 9 according to some embodiments of the present application. [Explanation of symbols]

[0026] 100 Moving Platform 110 Rear part 111 Front part 120 Sensing System 121 Positioning device 122 Buffer 123 Cliff Sensor 130 Control System 140 Drive System 141 Drive Wheel Assembly 142 Directional Change Assembly 150 Cleaning Module 151 Dry Cleaning Module 152 Side Brush 153 Main Brush Module 300 dustbin 500 filters 160 Energy Systems 170 Man-machine interactive system 800 cover plate 900 Button Assembly 911 Pressing body 802 Button mounting hole 910 Button Cap 920 Bracket 801 Positioning column body 925 Positioning hole 930 Step structure 700 Circuit Board 921 First side wall 922 Second side wall 923 1st assembly section 924 2nd Assembly Department 926 Elastic Arm 927 Button Plate 9271 Button plate head 9272 Button Plate Tail 912 1st protrusion 913 2nd protrusion 914 Third protrusion 915 First groove 916 2nd groove 917 depression 9171 Contact part 918 Blackout Arm DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application 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 application, and not all of the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without any creative work are all included in the protection scope of the present application.

[0028] The terms used in the examples of this application are used only for the purpose of describing specific examples and are not intended to limit this application. As used in the examples of this application and the appended claims, the singular forms "a," "the," and "the" are also intended to encompass the plural, and "plurality" generally includes at least two, unless the context clearly indicates otherwise.

[0029] The term "and / or" used in this specification merely describes the relationship between related objects, and there are three relationships. For example, A and / or B means that A may exist alone, A and B may exist simultaneously, or B may exist alone. In addition, " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0030] In the examples of the present application, terms such as "first," "second," and "third" may be used for explanatory purposes, but it should be understood that these terms are not intended to be limiting. These terms are used only for distinction. For example, a "first" may also be called a "second," and similarly, a "second" may also be called a "first," without departing from the scope of the examples of the present application.

[0031] It should be noted that the terms "comprises," "has," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or device that includes a set of elements not only includes those elements, but also other elements not expressly listed or inherent in those products or devices. Unless further limited, an element defined with the phrase "comprises" does not exclude the presence of other identical elements in a product or device that includes said element.

[0032] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0033] 1 and 2 are schematic structural diagrams of an automatic cleaning device according to an exemplary embodiment. As shown in FIGS. 1 and 2, the automatic cleaning device may be a vacuum cleaning robot, a mopping / brushing robot, a window climbing robot, etc., and the automatic cleaning device includes a moving platform 100, a sensing system 120, a control system 130, a driving system 140, a cleaning module 150, an energy system 160 and a man-machine interactive system 170.

[0034] The mobile platform 100 is configured to automatically move across an operating surface in a target direction. 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, 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, the glass being the operating surface; or a pipe cleaning robot, where the automatic cleaning device works on the interior surface of a pipe, the interior surface of the pipe being the operating surface. Purely for purposes of illustration, a mopping robot will be used in the present application.

[0035] 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 can automatically and adaptively make operational decisions in response to unexpected environmental inputs. A non-autonomous mobile platform cannot adaptively make operational decisions in response to unexpected environmental inputs, but can operate according to a predetermined procedure or a set logic. Correspondingly, 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.

[0036] 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 an ultrasonic sensor (not shown), an infrared sensor (not shown), a magnetometer (not shown), an accelerometer (not shown), a gyroscope (not shown), and an odometer (not shown), and provides various position information and movement status information of the equipment to the control system 130.

[0037] To more clearly describe the behavior of the automatic cleaning device, the following directions are defined: the lateral axis Y, the front-to-rear axis X, and the central vertical axis Z. The forward drive direction along the front-to-rear axis X is designated "forward," and the rear drive direction along the front-to-rear axis X is designated "rear." The lateral axis Y extends substantially along the axis center defined by the center point of the drive wheel assembly 141 between the right and left wheels of the automatic cleaning device. Here, the automatic cleaning device can rotate around the Y 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." 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 can rotate around the Z axis. When the automatic cleaning device tilts to the right of the X axis in the direction of travel of the automatic cleaning device, this is referred to as "right turn," and when the automatic cleaning device tilts to the left of the X axis, this is referred to as "left turn."

[0038] 2, cliff sensors 123 are provided at the bottom of the moving platform 100 and at the front and rear of the drive wheel assembly 141, which can prevent the automatic cleaning device from falling when retreating and thus prevent 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.

[0039] Specific types of position determining device 121 include, but are not limited to, a camera, a laser ranging device (LDS), and the like.

[0040] Each assembly in the sensing system 120 may operate independently or may work in concert to more accurately achieve its purpose and function. The cliff sensor 123 and ultrasonic sensor identify the surface to be cleaned and determine the physical characteristics of the surface to be cleaned, including the surface material, cleanliness, etc., which can be combined with cameras, laser ranging devices, etc. for more accurate determination.

[0041] For example, an ultrasonic sensor may be used to determine whether the surface to be cleaned is carpeted, and if the ultrasonic sensor determines that the surface to be cleaned is carpeted, the control system 130 may control the automatic cleaning device to perform a carpet mode cleaning.

[0042] A buffer 122 is provided on the front portion 111 of the mobile platform 100, and when the drive wheel assembly 141 propels the automatic cleaning device to travel on the floor surface during the cleaning process, the buffer 122 detects one or more events (or objects) in the travel path of the automatic cleaning device via a sensor system, for example, an infrared sensor, and the automatic cleaning device may detect the event (or object), for example, an obstacle or a wall, through the buffer 122 and control the drive wheel assembly 141 to, for example, move away from the obstacle in response to the event (or object).

[0043] The control system 130 is provided on a circuit board within the mobile platform 100 and includes an arithmetic processor, such as a central processing unit (CPU) or an application processor, that communicates 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 instant map of the environment in which the automatic cleaning device is installed based on obstacle information fed back from the laser ranging device, and autonomously determines a travel path based on the environmental information and the environmental map. Thereafter, the control system 130 controls operations such as forward movement, backward movement, and / or turning of the drive system 140 according to the autonomously determined travel path. Furthermore, the control system 130 can determine whether to activate the cleaning module 150 to perform a cleaning operation based on the environmental information and the environmental map.

[0044] Specifically, the control system 130 combines distance and speed information fed back from the buffer 122, cliff sensor 123, and sensing devices such as ultrasonic sensors, infrared sensors, magnetometers, accelerometers, gyroscopes, and odometers to comprehensively determine the current operating state of the vacuum cleaner (e.g., whether it is crossing a threshold, riding on a carpet, standing on a cliff, getting caught on the top or bottom, the dustbin is full, or being lifted), and provides specific next operating strategies according to different situations, allowing the operation of the automatic cleaning device to better meet the owner's requirements and provide a better user experience. Furthermore, the control system can plan the most efficient and rational cleaning path and cleaning method according to the instant map information drawn by SLAM, thereby significantly improving the cleaning efficiency of the automatic cleaning device.

[0045] Based on specific distance and angle information, such as x, y, and θ components, the drive system 140 can execute drive commands to steer the automatic cleaning device to travel across a floor surface. As shown in FIG. 2, the drive system 140 includes a drive wheel assembly 141, which can simultaneously control the left and right wheels. For more precise control of the device's operation, 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.

[0046] To allow 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 diverting assemblies 142. The diverting assemblies 142 may be driven wheels or driving wheels, and their structural forms include, but are not limited to, universal wheels. The diverting assemblies 142 may be located in front of the driving wheel assemblies 141.

[0047] The energy system 160 includes 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 low battery voltage monitoring circuit, which are in turn connected to a microcomputer control circuit. The main body is connected to a charging pile via charging electrodes located on the side or bottom of the main body. If dust adheres to the exposed charging electrodes, the accumulated charge during charging can cause the plastic body around the electrodes to melt and deform, ultimately deforming the electrodes themselves and preventing normal charging.

[0048] The man-machine interactive system 170 includes keys on a host panel that can be used by a user to select functions, and may further include a display screen and / or indicator lights and / or a speaker, which can 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 automatic cleaning device, the mobile phone client can display to the user a map of the environment in which the device is installed and the location of the device, providing the user with a richer and more user-friendly range of functions.

[0049] As shown in FIG. 2, cleaning module 150 may include a dry cleaning module 151 .

[0050] The dry cleaning module 151 includes a roller brush, dust box, fan, and air outlet. The roller brush, which is in contact with the floor surface to some extent, sweeps dust from the floor surface toward the dust inlet between the roller brush and the dust box, and then sucks it into the dust box using suction gas generated by the fan. The dust removal capacity of a vacuum cleaner is characterized by its dust pickup efficiency (DPU). DPU is affected by the structure and material of the roller brush, the wind power utilization rate of the duct consisting of the dust inlet, dust box, fan, air outlet, and their connecting components, and the type and power of the fan, making it a complex system design issue. Compared to ordinary plug-in dust vacuums, improved dust removal capacity is significant for energy-constrained automatic cleaning devices. This directly and effectively reduces the energy required, e.g., a device that can clean 80 square meters of floor space on a single charge can be upgraded to clean more than 180 square meters on a single charge. Furthermore, by reducing the number of charging times, battery life is also significantly extended, allowing users to replace batteries less frequently. More intuitively and importantly, improved dust removal capability provides the most obvious and significant user experience, allowing users to directly conclude whether the device cleans or wipes clean. The dry cleaning module may further include a side brush 152 having a rotating shaft, which is angled relative to the floor surface to move dirt to the roller brush area of ​​the cleaning module 150.

[0051] As an optional cleaning module, the automatic cleaning device may further include a wet cleaning module, configured to clean at least a portion of the operating surface using a wet cleaning method, wherein the wet cleaning module includes a water tank, a cleaning head, a drive unit, etc., wherein water from the water tank flows along a water circuit to the cleaning head, and the cleaning head cleans at least a portion of the operating surface under the drive of the drive unit.

[0052] The pressing structure on the cover plate of existing automatic cleaning devices is complex. For example, most existing cleaning device button structures involve attaching a soft rubber bracket to a hard rubber bracket, bonding the hard rubber button cap to the soft rubber bracket, then attaching the soft rubber bracket to the appliance top casing decorative cover with double-sided adhesive tape, and then fastening the hard bracket to the top casing via a hook at the bottom. This button assembly structure is complex, requires many parts, requires long assembly time, is cumbersome, and is costly. Due to this multi-layer structure, when attaching the soft rubber bracket to the appliance top casing decorative cover, the soft rubber is prone to misalignment, making button removal difficult. Furthermore, the double-sided adhesive tape and soft rubber are tightly bonded together during removal, which easily damages the double-sided adhesive tape and soft rubber, making the button unreusable.

[0053] Therefore, an embodiment of the present application provides an automatic cleaning device without a flip cover, simplifying unnecessary elements of the button assembly of the automatic cleaning device while increasing the space from below the button assembly to above the circuit board, allowing more electronic components to be placed in the space and increasing the elasticity of the button assembly, making it easier to press. Specifically, the present application provides an automatic cleaning device. As shown in FIG. 3 , according to a specific embodiment of the present application, the automatic cleaning device includes: a moving platform 100 configured to automatically move on an operation surface, the moving platform 100 including a cover plate 800 constituting at least a portion of the top surface of the moving platform; and a button assembly 900, which is manually operated and pressed to control the operation of the automatic cleaning device, the button assembly 900 including a button cap 910 and a bracket 920, assembled to the cover plate 800. The cover plate 800 has a button mounting hole 802, and the button assembly 900 includes a pressing body 911. The pressing body 911 is assembled to the button mounting hole 802, and the top surface of the pressing body is substantially flush with the top surface of the cover plate. A user can directly apply force to the pressing body when operating the button assembly, eliminating the need for additional decorative components. In some embodiments, the top surface of the pressing body is slightly lower or higher than the top surface of the cover plate, allowing the user to easily identify the location of the button assembly by touch alone. The button assembly 900 can be applied to any device housing requiring a mechanical button, including, but not limited to, a cleaning robot, a mopping robot, a sweeping / mopping robot, a handheld robot, a watering robot, etc. The button assembly can typically be provided on the top surface or side of the housing of the mechanical device, but is not limited thereto. The housing of the mechanical device is typically formed from, but is not limited to, a hard plastic, resin, metal, or alloy material.

[0054] 4 to 7, the button assembly 900 includes a button cap 910 and a bracket 920. The button cap 910 is typically made of a soft, opaque rubber material, providing sealing, waterproofing, and light-blocking properties during interference fit assembly. The bracket 920 is typically made of a hard rubber material, providing support during button cap assembly and being fitted into a hard cover plate to secure the button cap. As shown in FIG. 3, during assembly, the soft rubber button cap is attached to the cover plate from bottom to top, with at least the pressing body 911 attached to the corresponding button mounting hole 802. The hard rubber bracket is then attached below the soft rubber button cap, and the positioning post body 801 on the cover plate 800 and the positioning hole 925 on the bracket 920 secure the button assembly. The two circular positioning holes 925 on the button bracket and the positioning post body 801 with a fastening structure on the cover plate simultaneously perform a positioning function, and the button cap 910 is then attached between the bracket 920 and the cover plate.

[0055] In some embodiments, as shown in FIG. 5 , the bracket 920 has a stepped structure 930 extending along the circumferential direction. When assembled, the stepped structure is a step that rises continuously from the outside to the inside or from the inside to the outside. Compared to a generally flat bracket, the raised portion of the stepped structure provides additional space and design flexibility for other components, allowing for effective use of the space above the bracket. Specifically, the direction of the step can be designed according to the spatial requirements of other components. Alternatively, when assembled, the stepped structure is a step that rises continuously from the outside to the inside. This increases the extra space, and since the increased extra space is located in the center, sufficient space is secured below the corresponding pressing body for the pressing operation, contributing to the rational setting of the pressing stroke and elastic recovery, and improving the user experience. The steps of each layer of the stepped structure 930 extend circumferentially parallel to the overall outer circumferential contour of the bracket 920 to form a closed structure, such as, but not limited to, a closed oval, circle, square, or rectangle. The stepped structure 930 has a substantially tapered step structure, with steps that rise continuously from the outside to the inside, extending upward from the outer step to the inner step. The specific number of steps is not limited, and may be, for example, two to five steps, such as two or three steps. As shown in FIGS. 4 and 5, the width and height of each step are not limited, and may be the same width and height, or may be steps of different widths and heights. The stepped structure 930 extending along the circumferential direction of the bracket 920 creates a larger protruding space below the bracket. Because the circuit board 700 is abutted below the bracket, as shown in FIG. 8, this protruding space provides greater convenience for component design on the circuit board than a closed space, allowing more electronic components to be placed in the space normally occupied by the lower part of the bracket. Furthermore, the stepped structure 930 extending along the circumferential direction of the bracket 920 creates a larger protruding space below the bracket, increasing the resilience of the rigid bracket.After the pressing force applied to the button assembly is transmitted to the hard bracket, the bracket is easy to elastically deform and easy to recover after elastic deformation, giving the button assembly a better tactile feel and increasing the convenience of pressing contact with the device.

[0056] 4 , the bracket 920 includes a first side wall 921 extending continuously in the circumferential direction along the outer periphery of the bracket 920 and a second side wall 922 extending continuously in the circumferential direction along the interior of the bracket 920, wherein a first assembly portion 923 is formed between the first side wall 921 and the second side wall 922, and a second assembly portion 924 is formed within the second side wall 922. The first side wall 921 and the second side wall 922 extend circumferentially parallel to the overall outer periphery of the bracket 920 to form a closed structure, such as, but not limited to, a closed oval, circle, square, or rectangle. The closed and extending first side wall 921 and second side wall 922 form the first assembly portion 923 and the second assembly portion 924 that receive the first protrusion 912 and the second protrusion 913 of the button cap, respectively, and serve to fix and support the entire button cap.

[0057] Specifically, in some embodiments, at least a portion of the stepped structure is located in the first assembly part 923, and another portion of the stepped structure is located in the second assembly part 924. For example, the first assembly part 923 has at least one stepped structure, and the second assembly part 924 has the highest stepped surface of the stepped structure. The first side wall 921 and the second side wall 922 also form a height structure substantially in accordance with the elevation of the stepped structure 930, for example, the second side wall 922 is higher than the first side wall 921, which can more stably support the button cap and more completely seal it.

[0058] In some embodiments, both ends of the bracket 920 each include a positioning hole 925, and a positioning post body 801 is provided on the underside of the cover plate corresponding to the positioning hole 925, and the positioning post body 801 passes through the positioning hole 925 to fix the bracket 920. Optionally, the side wall of the positioning post body 801 includes at least one protrusion, and the positioning post body 801 is assembled by press-fitting into the positioning hole 925, so that the bracket 920 is firmly fixed to the underside of the cover and at the same time provides an upward pressing force to fix the button cap 910.

[0059] In some embodiments, the bracket 920 further includes a button plate 927 connected via at least one elastic arm 926, which is configured to move downward under the action of an external force to perform a pressing function, and the elastic arm 926 is configured to restore the button plate 927. As shown in FIG. 4 , a pair of button plates 927 are typically located inside the bracket and are arranged symmetrically. Each button plate 927 includes a button plate head 9271 that contacts the button cap abutment 9171 and a button plate tail 9272 that presses against and contacts components on the circuit board 105. Typically, the width of the button plate head 9271 is greater than the width of the button plate tail 9272. A larger width of the button plate head 9271 makes it more susceptible to pressing forces, while a smaller width of the button plate tail 9272 allows for accurate contact and pressing of the element and prevents accidental pressing. The button plate 927 is connected to the inner edge of the bracket 920 via elongated elastic arms 926, and one or more elongated elastic arms 926 are arranged around the button plate 927 to provide the button plate 927 with sufficient pressing and recovery elastic force.

[0060] 6 and 7 , the button cap 910 includes a pressing body 911 substantially at the center of the button cap 910, and a first protrusion 912 and a second protrusion 913 extending downward around the pressing body 911, the first protrusion 912 and the second protrusion 913 extending circumferentially parallel to the contour of the pressing body 911 to form a closed structure, wherein, when the button cap 910 is assembled to the bracket 920, the first protrusion 912 and the second protrusion 913 fit into the first assembly part 923 and the second assembly part 924, respectively. To fit into the stepped structure inside the first assembly part 923 and the second assembly part 924, the length of the downwardly extending first protrusion 912 is greater than the length of the downwardly extending second protrusion 913. The first protrusion 912 and the second protrusion 913 are assembled to the first assembly part 923 and the second assembly part 924 by interference fit, respectively, to improve the stability and sealing of the button cap assembly.

[0061] In some embodiments, as shown in Figure 6, a third protrusion 914 is provided on the upper surface of the button cap 910, connecting the first protrusion 912 and the second protrusion 913 and extending upward around the pressing body 911. The third protrusion 914 is parallel to the contour of the pressing body 911 and extends circumferentially to form a closed structure. The button cap 910 further includes a first groove 915 and a second groove 916 extending around the third protrusion 914 along both sides of the third protrusion 914, where the depth of the first groove 915 is greater than the depth of the second groove 916. As shown in Figures 9 and 10, Figure 10 is an enlarged view of the bottom view of the cover plate at point D in Figure 9. The cover plate 800 includes a button mounting hole 802, and the pressing body 911 is assembled into the button mounting hole 802. At this time, a downwardly extending edge 804 is provided at the edge of the button mounting hole 802, and the edge is inserted into a second groove 916 around the pressing body 911 as the pressing body 911 is inserted into the button mounting hole 802 from bottom to top. The edge 804 forms one of the waterproof ribs of the cover plate 800, and the side wall of the edge 804 includes at least one bump. The pressing body 911 is assembled into the button mounting hole 802 by a press fit, achieving a sealed connection and realizing the effects of waterproofing and preventing light leakage. Furthermore, in some embodiments, the cover plate 800 includes a waterproof rib 803 extending downward around the button mounting hole 802, which is assembled into the first groove 915. The side wall of the waterproof rib 8003 includes at least one bump, and the waterproof rib 8003 is assembled by a press-fit into the first groove 915. When the pressing body 911 is inserted into the button mounting hole 802, the edge of the button mounting hole 802 is inserted into the second groove 916 around the pressing body 911, and the waterproof rib 803 is also inserted by a press-fit into the first groove 915. The downward extension length of the waterproof rib 803 is longer than the edge length of the button mounting hole 802, which further seals the pressing body 911 and the button mounting hole 802, achieving good waterproof and light-proof effects.

[0062] 7 and 8, in which FIG. 8 is a cross-sectional view taken along line AB in FIG. 1. Two recesses 917 are provided in the second protrusion 913 at a distance from each other, and in an assembled state, the recesses 917 are configured to accommodate the button plate 927. An abutment portion 9171 is provided at the top end of the recess 917, and after the button cap and bracket are assembled, the button plate head 9271 is tightly abutted against the abutment portion 9171 and is susceptible to a pressing force.

[0063] 7 and 8, a downwardly extending light-shielding arm 918 is provided in the center of the two spaced-apart recesses 917. The light-shielding arm 918 may be made of an opaque material or may be formed by applying an opaque material, so as to prevent optical interference from occurring between optical elements associated with the pressing operation after components on the circuit board 105 are pressed by the button plates 927 on both sides, thereby preventing an impact on the user's acquisition of optically presented information. The light-shielding arm 918 may be integrally molded with the button cap, or may be later combined by processing such as gluing or engagement, and is not limited thereto.

[0064] This application provides an automatic cleaning device, in which a button assembly is assembled to a cover plate of the automatic cleaning device, the button assembly including a soft rubber button cap and a hard rubber bracket, the button cap being assembled to the bracket, the bracket having a stepped structure extending along the circumferential direction, the stepped structure being a step that rises continuously from the outside to the inside in the assembled state, the continuously rising stepped structure provides sufficient space below the button assembly to accommodate more components, while at the same time increasing the elasticity of the bracket, allowing the button assembly to recover more easily after being pressed, and increasing the settable length of the waterproof rib on the top cover, thereby improving the waterproof effect of the button assembly.

[0065] Finally, please note that each embodiment in this specification will be described progressively, with each embodiment focusing on differences from other embodiments, and that identical or similar parts between each embodiment may be referenced to each other.

[0066] The above examples are used to explain the technical solutions of the present disclosure, but are not intended to limit them. The present disclosure has been described in detail with reference to the above examples. However, those skilled in the art can still modify the technical solutions described in each of the above examples or equivalently replace some of the technical features thereof, and it should be understood that these modifications and replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each of the embodiments of the present disclosure.

Claims

1. An automatic cleaning device, a moving platform configured to automatically move an operating surface, the moving platform including a cover plate forming at least a portion of a top surface of the moving platform; a button assembly assembled to the cover plate; Including, the button assembly includes a soft button cap and a hard bracket; the button cap is assembled to the bracket; The bracket includes a stepped structure extending along a circumferential direction of the automatic cleaning device.

2. 2. The automatic cleaning device according to claim 1, wherein the step structure is a step that rises continuously from the outside to the inside in an assembled state.

3. The automatic cleaning device of claim 1 , wherein the bracket includes at least one side wall, the assembly being formed inside the at least one side wall.

4. the bracket includes a first side wall extending continuously in a circumferential direction along an outer periphery of the bracket, and a second side wall extending continuously in a circumferential direction along an interior of the bracket, The automatic cleaning device of claim 1 , wherein a first assembly is formed between the first and second side walls, and a second assembly is formed within the second side wall.

5. The automatic cleaning device according to claim 4 , wherein at least a portion of the step structure is located in the first assembly portion, and another portion of the step structure is located in the second assembly portion.

6. 2. The automatic cleaning device of claim 1, wherein a positioning hole is provided at each end of the bracket, and a positioning post is provided on the underside of the cover plate corresponding to the positioning hole, and the positioning post passes through the positioning hole to fix the bracket.

7. The bracket further includes a button plate connected via at least one resilient arm; The button plate is configured to move downward under the action of an external force to perform a pressing function, The automatic cleaning device of claim 4 , wherein the resilient arm is configured to return the button plate.

8. the button cap includes a pressing body and at least one protrusion extending downwardly around the pressing body; The automatic cleaning device of claim 3 , wherein when the button cap is assembled to the bracket, the at least one protrusion fits into an assembly formed on the inside of the at least one side wall.

9. the button cap includes a first protrusion and a second protrusion extending downward around the pressing body; The automatic cleaning device of claim 7 , wherein when the button cap is assembled to the bracket, the first protrusion and the second protrusion are fitted to the first assembly part and the second assembly part, respectively.

10. The automatic cleaning device of claim 9 , wherein the button cap includes a third protrusion connecting the first protrusion and the second protrusion and extending upward around the pressing body.

11. 11. The automatic cleaning device of claim 10, wherein the button cap includes a first groove and a second groove extending around the third protrusion along both sides of the third protrusion, the depth of the first groove being greater than the depth of the second groove.

12. 12. The automatic cleaning device according to claim 11, wherein the cover plate has a button mounting hole, the pressing body is assembled to the button mounting hole, and the top surface of the pressing body is substantially flush with or slightly lower than the top surface of the cover plate.

13. the cover plate further includes at least one waterproof rib extending downward around the button mounting hole; The automatic cleaning device of claim 12 , wherein the at least one waterproof rib is assembled in the first groove and / or the second groove.

14. The automatic cleaning device according to claim 13, wherein a side wall of the at least one waterproof rib has a bump, and the at least one waterproof rib is assembled in an interference fit with the first groove and / or the second groove via the bump.

15. the cover plate includes a first waterproof rib and a second waterproof rib extending downward around the button mounting hole; The automatic cleaning device of claim 14, wherein the first waterproof rib is assembled in the first groove, and the second waterproof rib is assembled in the second groove.

16. 10. The automatic cleaning device of claim 9, wherein the second protrusion includes two spaced apart recesses configured to receive the button plate in an assembled state.

17. 17. The automatic cleaning device of claim 16, wherein a downwardly extending light blocking arm is provided in the center of the two spaced recesses.

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