Automatic cleaning device and system

Abstract

Regarding cleaning robots, and regarding automatic cleaning devices and systems. [Solution] The automatic cleaning device is a moving platform configured to automatically move an operating surface, and includes a cover plate (800) that constitutes at least a portion of the top surface of the moving platform, and a button assembly assembled on the cover plate, the button assembly including a button cap and a bracket, the button cap being assembled to the bracket and the bracket including a stepped structure (930) extending along the circumferential direction. This provides sufficient space below the button assembly to accommodate more parts, and at the same time increases the elastic force of the bracket, making it easier for the button assembly to return to its original position after being pressed.

Description

Technical Field

[0001] (Related Application) This application is based on a Chinese patent application filed on January 11, 2022, with application number 202220066057.1, claims the priority of the Chinese patent application, and all its content is incorporated herein by reference.

[0002] This application relates to the technical field of cleaning robots, specifically to automatic cleaning devices and systems.

Background Art

[0003] In modern life, cleaning robots are becoming increasingly popular, bringing convenience to household life. There are cleaning robots, mopping robots, and integrated cleaning and mopping robots, etc. With the popularization of cleaning robots, the functions and structures of cleaning robots have become more complex, and the production costs have become increasingly high.

[0004] In the existing technology, some cleaning robots have added structures and functions such as automatic charging, automatic dust collection, lifting and vibration, making the cleaning robots more intelligent while increasing the complexity of each component, which is inconvenient for subsequent maintenance and inspection.

Summary of the Invention

[0005] According to a specific embodiment of the present application, the present application provides an automatic cleaning device, and the automatic cleaning device includes a moving platform configured to automatically move an operation surface, the moving platform including a cover plate constituting at least a part of the 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 the circumferential direction.

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

[0007] In some embodiments, the bracket includes at least one side wall, and an assembly portion is formed on the inside of the at least one side wall.

[0008] In some embodiments, the bracket includes a first side wall that extends continuously in the circumferential direction along the outer circumference of the bracket and a second side wall that extends continuously in the circumferential direction along the interior of the bracket, with a first assembly portion formed between the first and second side walls and a second assembly portion formed within the second side wall.

[0009] In some embodiments, at least a portion of the stepped structure is located in the first assembly, and the other portion of the stepped structure is located in the second assembly.

[0010] In some embodiments, a positioning hole is provided at each end of the bracket, and a positioning column is provided on the lower surface of the cover plate corresponding to the positioning hole, with the positioning column passing through the positioning hole to secure 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 in response to 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 projection extending downward around the pressing body, and when the button cap is assembled to the bracket, the at least one projection 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 projection and a second projection extending downward around the pressing body, and when the button cap is assembled to the bracket, the first projection and the second projection are fitted to the first and second assembly parts, respectively.

[0014] In some embodiments, the button cap includes a third projection that connects the first projection and the second projection and extends upward around the pressing body.

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

[0016] In some embodiments, the cover plate has button mounting holes, the pressing body is assembled into the button mounting holes, and the top surface of the pressing body and the top surface of the cover plate are substantially flush or slightly lower.

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

[0018] In some embodiments, the sidewall of the at least one waterproof rib is provided with a bump, and the at least one waterproof rib is assembled by interlocking it with the first groove and / or second groove 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 into the first groove and the second waterproof rib being assembled into the second groove.

[0020] In some embodiments, there are two depressions provided at intervals on the second protrusion, and in the assembled state, the depressions are configured to accommodate the button plate.

[0021] In some embodiments, a light-shielding arm extending downward is provided at the center of the two depressions provided at intervals.

[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. The button assembly is assembled on the cover plate of the automatic cleaning device. The button assembly includes a soft rubber button cap and a hard rubber bracket. The button cap is assembled on the bracket. The bracket includes a stepped structure extending along the circumferential direction. In the assembled state, the stepped structure is a continuously rising step. Due to the continuously rising stepped structure, sufficient space is provided under the button assembly, and more components can be accommodated. At the same time, the elastic force of the bracket is increased, making it easier for the button assembly to return to its original position after being pressed. Furthermore, the installable length of the waterproof rib of the top cover can be increased, enhancing the waterproof effect of the button assembly.

[0024] The accompanying drawings here are incorporated into this specification and form a part of this specification, showing embodiments that conform to the present application and used to interpret the principle of the present application together with the specification. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those skilled in the art can obtain other drawings based on these accompanying drawings without creative labor.

Brief Description of the Drawings

[0025] [Figure 1] Perspective view of the automatic cleaning device of some embodiments of the present application [Figure 2] Schematic diagram of the bottom structure of the automatic cleaning device of some embodiments of the present application [Figure 3]Schematic diagram of the button assembly structure of the automatic cleaning device according to some embodiments of the present application [Figure 4] Schematic top view of the button bracket of the automatic cleaning device according to some embodiments of the present application [Figure 5] Schematic bottom view of the button bracket of the automatic cleaning device according to some embodiments of the present application [Figure 6] Schematic top view of the button cap of the automatic cleaning device according to some embodiments of the present application [Figure 7] Schematic bottom view of the button cap of the automatic cleaning device according to some embodiments of the present application [Figure 8] Schematic cross-sectional structure diagram of the button assembly structure of the automatic cleaning device according to some embodiments of the present application. [Figure 9] Schematic structure diagram of the cover plate of the automatic cleaning device according to some embodiments of the present application [Figure 10] Enlarged view of the bottom view at location D of the cover plate in FIG. 9 according to some embodiments of the present application

Description of reference numerals

[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 Driving system 141 Driving wheel assembly 142 Direction conversion assembly 150 Cleaning module 151 Dry cleaning module 152 Side brush 153 Main brush module 300 Dust box 500 Filter 160 Energy system 170 Human-Machine Interactive Systems 800 Cover Plate 900 Button Assembly 911 Pressing body 802 Button mounting holes 910 Button Cap 920 bracket 801 Positioning column body 925 Positioning holes 930 Step structure 700 Circuit Boards 921 First side wall 922 Second side wall 923 1st Assembly Department 924 2nd Assembly Department 926 Elastic Arm 927 Button Plate 9271 Button plate head 9272 Button plate tail section 912 1st protrusion 913 2nd protrusion 914 Third protrusion 915 First groove 916 2nd groove 917 Indentation 9171 Contact part 918 Shading Arm [Modes for carrying out the invention]

[0027] To further clarify the purpose, technical solutions, and advantages of this application, the application will be described in more detail below with reference to the accompanying drawings, although obviously the embodiments described are only a selection of embodiments of this application, not all embodiments. Any other embodiments that can be obtained by those skilled in the art without any creative work based on the embodiments of this application are all included within the scope of protection of this application.

[0028] The terms used in the embodiments of this application are used solely for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms “one,” “the said,” and “the said” as used in the embodiments and appended claims of this application are also intended to include plural forms, and “plural” generally includes at least two unless the context explicitly indicates otherwise.

[0029] The terms "and / or" as used herein merely describe the relationship between related objects, and there are three possible 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 preceding and succeeding related objects are in an "or" relationship.

[0030] It should be noted that while terms such as "first," "second," and "third" may be used for descriptive purposes in the embodiments of this application, they should not be limited to these terms. These terms are used solely for distinction. For example, the first may also be called the second, and similarly, the second may also be called the first, as long as it does not deviate from the scope of the embodiments of this application.

[0031] Note that the terms “includes,” “equipped with,” or any other variations thereof are intended to cover non-exclusive inclusion, and that products or devices containing a set of elements include not only those elements but also other elements not explicitly listed, or elements specific to those products or devices. Unless further limited, elements defined by the expression “includes…” do not exclude the presence of other identical elements in products or devices containing such elements.

[0032] The embodiments of this application will be described in detail below with reference to the attached drawings.

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

[0034] The mobile platform 100 is configured to automatically move its operating surface in the direction of a target. 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, which works on a floor surface, the floor surface being the operating surface; the automatic cleaning device may be a window cleaning robot, which works on the exterior glass surface of a building, the glass being the operating surface; and the automatic cleaning device may be a pipe cleaning robot, which works on the interior surface of a pipe, the interior surface of the pipe being the operating surface. For purely illustrative purposes, this application describes a mopping robot as an example.

[0035] In some embodiments, the mobile platform 100 may be an autonomous mobile platform or a non-autonomous mobile platform. An autonomous mobile platform means that the mobile platform 100 itself can automatically and adaptively make operational decisions in response to unexpected environmental inputs, while a non-autonomous mobile platform itself cannot adaptively make operational decisions in response to unexpected environmental inputs but can operate according to predetermined procedures or certain logic. Correspondingly, if the mobile platform 100 is an autonomous mobile platform, the target direction may be autonomously determined by the automatic cleaning device, while if the mobile platform 100 is a non-autonomous mobile platform, the target direction may be set by the system or manually. If the mobile platform 100 is an autonomous mobile platform, the mobile platform 100 includes a front portion 111 and a rear portion 110.

[0036] The sensing system 120 includes a position determination device 121 located above the mobile platform 100, a buffer 122 located on 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), which provide the control system 130 with various position information and movement status information of the equipment.

[0037] To more clearly describe the behavior of the automatic cleaning device, the automatic cleaning device, with the following directions defined, can move on the floor surface by various combinations of movement along three mutually perpendicular axes: the lateral axis Y, the longitudinal axis X, and the central vertical axis Z, defined by the moving platform 100. The forward drive direction along the longitudinal axis X is denoted as "forward," and the rearward drive direction along the longitudinal axis X is denoted as "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 part of the automatic cleaning device tilts upward and the rear part tilts downward, it is called "pitch up," and when the front part of the automatic cleaning device tilts downward and the rear part tilts upward, it is called "pitch down." Furthermore, the automatic cleaning device can rotate around the Z axis. In the direction of travel of the automatic cleaning device, when the automatic cleaning device tilts to the right of the X axis, it is called "right turn," and when the automatic cleaning device tilts to the left of the X axis, it is called "left turn."

[0038] As shown in Figure 2, cliff sensors 123 are provided at the bottom of the mobile platform 100, in front of and behind the drive wheel assembly 141. These cliff sensors prevent the automatic cleaning device from falling when it is reversing, thus preventing damage to the automatic cleaning device. "Front" refers to the side in the same direction as the automatic cleaning device's direction of travel, and "rear" refers to the side opposite to the direction of travel of the automatic cleaning device.

[0039] Specific types of position determination devices 121 include, but are not limited to, cameras and laser rangefinders (LDS).

[0040] Each assembly in the sensing system 120 may operate independently or cooperate to more accurately achieve its purpose and function. The cliff sensor 123 and ultrasonic sensor can identify the surface to be cleaned, determine the physical characteristics of the surface to be cleaned, including the surface material and cleanliness, and make a more accurate determination by combining them with a camera, laser rangefinder, etc.

[0041] For example, an ultrasonic sensor may be used to determine whether or not the surface to be cleaned is carpet, and if the ultrasonic sensor determines that the surface to be cleaned is made of carpet material, the control system 130 may control the automatic cleaning device to perform cleaning in carpet mode.

[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 across the floor surface during the cleaning process, the buffer 122 may detect one or more events (or objects) in the path of the automatic cleaning device via a sensor system, such as an infrared sensor, and the automatic cleaning device may, by means of the buffer 122, detect the events (or objects), such as obstacles or walls, and in response to the events (or objects), control the drive wheel assembly 141 to move away from, for example, the obstacle.

[0043] The control system 130 is located on a circuit board within the mobile platform 100 and includes a central processing unit that communicates with non-temporary memory such as a hard disk, flash memory, and random access memory, as well as an application processor. The application processor receives environmental information sensed by the multiple sensors from the sensing system 120 and, based on obstacle information fed back from a laser rangefinder, uses a position determination algorithm, such as SLAM, to draw an instant map of the environment in which the automatic cleaning device is installed. Based on the environmental information and the environmental map, it autonomously determines a travel path and then controls operations such as forward, backward, and / or change of direction of the drive system 140 according to the autonomously determined travel path. Furthermore, the control system 130 can decide whether or not to activate the cleaning module 150 and 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 sensing devices such as the shock absorber 122, cliff sensor 123, ultrasonic sensor, infrared sensor, magnetometer, accelerometer, gyroscope, and odometer to comprehensively determine the current working state of the vacuum cleaner (e.g., crossing a threshold, on a carpet, positioned on a cliff, caught above or below, dust box full, being lifted, etc.), and provides a specific next action strategy according to the different situations, so that the operation of the automatic cleaning device better meets the owner's requirements and provides 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] The drive system 140 can execute drive commands based on specific distance and angle information such as x, y, and θ components to operate the automatic cleaning device and make it travel across the floor surface. As shown in Figure 2, the drive system 140 includes a drive wheel assembly 141, and the drive system 140 can control the left and right wheels simultaneously. To control the operation of the device more precisely, it is preferable that the drive system 140 includes a left drive wheel assembly and a right drive wheel assembly, respectively. The left and right drive wheel assemblies are arranged symmetrically along the transverse axis defined by the moving platform 100.

[0046] To enable the automatic cleaning device to move more stably on the floor surface or to have a higher mobility, the automatic cleaning device may include one or more steering assemblies 142, the steering assemblies 142 may be driven wheels or driving wheels, and their structural form includes, but is not limited to, universal wheels. The steering assemblies 142 may be located in front of the driving wheel assembly 141.

[0047] The energy system 160 includes rechargeable batteries such as nickel-metal hydride batteries and lithium batteries. The rechargeable batteries are connected to a charging control circuit, a battery pack charging temperature detection circuit, and a battery voltage drop monitoring circuit, and the charging control circuit, battery pack charging temperature detection circuit, and battery voltage drop monitoring circuit are connected to a microcontroller control circuit. The main unit is connected to a charging pile for charging via charging electrodes provided on the side or bottom of the main unit. If dust adheres to the exposed charging electrodes, the cumulative effect of the charge during the charging process causes the plastic body around the electrodes to melt and deform, and consequently the electrodes themselves to deform, resulting in a problem where normal charging cannot continue.

[0048] The man-machine interactive system 170 includes keys on a host panel, which are available to the user for function selection, and may further include a display screen and / or indicator lights and / or a speaker, the display screen, indicator lights and speaker being able to show the user the current status of the device or function options, 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 show 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 set of functions.

[0049] As shown in Figure 2, the 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 interferes to some extent with the floor surface, sweeps debris from the floor surface in front of the dust intake port between the roller brush and the dust box, and the air with suction force generated by the fan passes through the dust box and sucks the debris into the dust box. The dust removal capacity of a vacuum cleaner is characterized by its dust pickup efficiency (DPU), which is influenced by the structure and material of the roller brush, the airflow utilization rate of the duct consisting of the dust intake port, 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 vacuum cleaners, improved dust removal capacity is of great significance to energy-constrained automatic cleaning devices. This is because improved dust removal capacity directly and effectively reduces the energy required, meaning that a device that can clean 80 square meters of floor space on a single charge can be improved to clean 180 square meters or more on a single charge. Furthermore, reducing the number of charging cycles significantly extends battery life, allowing users to reduce the frequency of battery replacement. More intuitive and importantly, the improved dust removal capability is the most obvious and significant user experience, allowing users to directly conclude whether the device cleans or wipes cleanly. The dry cleaning module may further include a side brush 152 having a rotating axis, which is at a certain angle to the floor surface and moves the debris 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 placing a soft rubber bracket on top of a hard rubber bracket, bonding the hard rubber button cap to the soft rubber bracket, then using double-sided adhesive tape to bond the soft rubber bracket to the equipment top casing decorative cover, and finally securing the hard bracket to the top casing via a hook on the underside. Such button assembly structures are complex, have many parts, require long assembly times, are complicated processes, and are costly. Due to this multi-layer structure, when attaching the soft rubber bracket to the equipment top casing decorative cover, the soft rubber is prone to misalignment, making button removal difficult. Furthermore, when removing the button, the double-sided adhesive tape and soft rubber are strongly bonded, which can easily cause damage to both the adhesive tape and the soft rubber, making the button unusable.

[0053] Therefore, embodiments of the present application provide an automatic cleaning device without a flip cover, simplifying the button assembly of the automatic cleaning device by removing unnecessary elements, while increasing the space from below the button assembly to above the circuit board, thereby allowing more electronic components to be placed in the space, and simultaneously increasing the elastic force of the button assembly, making it easier to perform pressing. Specifically, the present application provides an automatic cleaning device. As shown in Figure 3, according to a specific embodiment of the present application, the present application provides an automatic cleaning device, which includes a moving platform 100 configured to move automatically on an operating surface, and a cover plate 800 that constitutes 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, and includes a button cap 910 and a bracket 920, and is 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, which is assembled into the button mounting hole 802, and the top surface of the pressing body is substantially flush with the top surface of the cover plate. When the user operates it, the force can be applied directly to the pressing body, and no additional decorative parts are required. In some embodiments, the top surface of the pressing body is slightly lower or slightly higher than the top surface of the cover plate, so that the user can easily locate the button assembly by touch alone. Here, the button assembly 900 is applicable to any device housing that requires a mechanical button, including but not limited to cleaning robots, mopping robots, sweeping and mopping robots, handheld robots, watering robots, etc., and the button assembly may usually be provided on the top surface of the mechanical device housing or on the side surface of the mechanical device housing, but is not limited thereto. The housing of the mechanical device is usually made of hard plastic, resin, metal or alloy material, but is not limited thereto.

[0054] Specifically, as shown in Figures 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-shielding properties during the interference fit assembly. The bracket 920 is typically made of a hard rubber material, providing support during the button cap assembly process while simultaneously fitting onto a hard cover plate to secure the button cap. As shown in Figure 3, during the assembly process, the soft rubber button cap is assembled onto the cover plate from bottom to top, with at least the pressing body 911 assembled into the corresponding button mounting hole 802. Then the hard rubber bracket is assembled below the soft rubber button cap. Fixation is achieved by the positioning column body 801 on the cover plate 800 and the positioning hole 925 on the bracket 920, forming the button assembly. The two circular positioning holes 925 on the button bracket and the positioning column body 801 with a retaining structure on the cover plate simultaneously perform a positioning function, and the button cap 910 is assembled between the bracket 920 and the cover plate.

[0055] In some embodiments, as shown in Figure 5, the bracket 920 has a stepped structure 930 extending along the circumferential direction, and in the assembled state, 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 bracket that is flat overall, the rising portion in the stepped structure provides placement space and design freedom for other members, and the space above the bracket can be effectively utilized, specifically, the orientation of the step can be designed according to the spatial requirements of other members. Selectively, in the assembled state, the stepped structure is a step that rises continuously from the outside to the inside, and the step that rises continuously from the outside to the inside increases the extra space, and because the increased extra space is in the center, sufficient space necessary for the pressing operation is secured below the corresponding part of the pressing body, which contributes to rationally setting the pressing stroke and elastic recovery and can improve the user experience. Each step of the stepped structure 930 extends along the circumferential direction parallel to the overall outer peripheral contour shape of the bracket 920 to form a closed structure, such as a closed ellipse, circle, square, rectangle, etc., but is not limited thereto. The stepped structure 930 consists of steps that rise continuously from the outside to the inside, forming a substantially tapered stepped structure that extends upward from the outer step to the inner step. The specific number of steps is not limited, for example, there may be 2 to 5 steps, or for example, 2 to 3 steps. As shown in Figures 4 and 5, the width and height of each step are not limited, and they may be the same width and height, or they may be steps of different widths and heights. The stepped structure 930 extending along the circumferential direction creates a larger overhang space below the bracket 920. Below the bracket is the circuit board 700 which is butted against it. As shown in Figure 8, this overhang space provides greater convenience in component design for the circuit board compared to a closed space, allowing more electronic components to be placed in the space that would normally be occupied by the bottom of the bracket. Furthermore, the stepped structure 930 extending along the circumferential direction creates a larger overhang space below the bracket 920, increasing the elasticity of the rigid bracket.After the pressing force applied to the button assembly is transmitted to the rigid bracket, the bracket is easily elastically deformable and recovers easily after elastic deformation, providing the button assembly with a better tactile feel and increasing the convenience of pressing the device.

[0056] In some embodiments, as shown in Figure 4, the bracket 920 includes a first side wall 921 that extends continuously in the circumferential direction along the outer circumference of the bracket 920, and a second side wall 922 that extends continuously in the circumferential direction along the interior of the bracket 920, where 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 contour shape of the bracket 920 to form a closed structure, such as a closed ellipse, circle, square, rectangle, etc. The closed and extending first side wall 921 and the second side wall 922 form the first assembly portion 923 and the second assembly portion 924 that house the first projection 912 and the second projection 913 of the button cap, and play a role in fixing and supporting the entire button cap.

[0057] Specifically, in some embodiments, at least a portion of the stepped structure is located in the first assembly 923, and the other portion of the stepped structure is located in the second assembly 924. For example, the first assembly 923 has at least one stepped structure, and the second assembly 924 has the highest stepped surface of the stepped structure. The first side wall 921 and the second side wall 922 also substantially form a height difference structure as the stepped structure 930 rises, for example, the second side wall 922 is higher than the first side wall 921, allowing the button cap to be supported more stably and sealed more completely.

[0058] In some embodiments, each end of the bracket 920 includes a positioning hole 925, and a positioning column body 801 is provided on the lower surface of the cover plate corresponding to the positioning hole 925, the positioning column body 801 passing through the positioning hole 925 to secure the bracket 920, and optionally the side wall of the positioning column body 801 includes at least one projection, and the positioning column body 801 is assembled by interlocking into the positioning hole 925, so that the bracket 920 is firmly fixed to the lower surface of the cover while simultaneously providing upward pressing force to secure 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, the button plate being configured to move downward in response to an external force to perform a pressing function, and the elastic arm 926 being configured to return the button plate 927 to its original position. As shown in Figure 4, a pair of button plates 927 are typically located inside the bracket and are arranged symmetrically, and the button plate 927 includes a button plate head 9271 that contacts the button cap contact portion 9171, and a button plate tail 9272 that presses and contacts the components of 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 wider button plate head 9271 is more susceptible to pressing forces, while a smaller button plate tail 9272 allows for accurate contact and pressing of the elements and avoids mispressing. The button plate 927 is connected to the inner edge of the bracket 920 via elongated elastic arms 926, one or more elongated elastic arms 926 provided around the button plate 927 to provide sufficient pressing and restoring elastic force to the button plate 927.

[0060] In some embodiments, as shown in Figures 6 and 7, the button cap 910 includes a pressing body 911 substantially at the center of the button cap 910, and first projections 912 and second projections 913 extending downward around the pressing body 911, the first projections 912 and second projections 913 extending circumferentially and parallel to the contour shape of the pressing body 911 to form a closed structure, where, when the button cap 910 is assembled to the bracket 920, the first projections 912 and second projections 913 fit into the first assembly 923 and second assembly 924, respectively. The length of the downward-extending first projection 912 is greater than the length of the downward-extending second projection 913 in order to fit into the stepped structure inside the first assembly 923 and second assembly 924. The first projection 912 and the second projection 913 are assembled by interlocking them into the first assembly part 923 and the second assembly part 924, respectively, improving the stability and sealing performance of the button cap assembly.

[0061] In some embodiments, as shown in Figure 6, a third projection 914 is provided on the upper surface of the button cap 910, connecting the first projection 912 and the second projection 913 and extending upward around the pressing body 911. The third projection 914 extends circumferentially parallel to the contour shape of the pressing body 911, forming a closed structure. The button cap 910 further includes a first groove 915 and a second groove 916 extending along both sides of the third projection 914 and around the third projection 914, with the depth of the first groove 915 being 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 of the cover plate at location 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, an edge portion 804 extending downward is provided on the edge of the button mounting hole 802, and this edge portion 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 portion 804 constitutes one of the waterproof ribs of the cover plate 800, and the side wall of the edge portion 804 includes at least one bump. The pressing body 911 is assembled by interlocking it into the button mounting hole 802, achieving a sealed connection and realizing waterproof and light leakage prevention effects. Furthermore, in some embodiments, the cover plate 800 includes a waterproof rib 803 extending downward around the button mounting hole 802, the waterproof rib 803 being assembled into the first groove 915, the sidewall of the waterproof rib 8003 including at least one bump, and the waterproof rib 8003 being assembled by interference 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 interference fit into the first groove 915, the length of the downward extension of the waterproof rib 803 being greater than the length of the edge of the button mounting hole 802, thereby further sealing the pressing body 911 and the button mounting hole 802, achieving a good waterproof and light leakage prevention effect.

[0062] In some embodiments, as shown in Figures 7 and 8, where Figure 8 is a cross-sectional view along line AB in Figure 1, two spaced recesses 917 are provided within the second projection 913, and in the assembled state, the recesses 917 are configured to accommodate the button plate 927. A contact portion 9171 is provided at the top of the recess 917, and after the assembly of the button cap and bracket is complete, the button plate head 9271 is in close contact with the contact portion 9171 and is susceptible to pressing force.

[0063] In some embodiments, as shown in Figures 7 and 8, a light-shielding arm 918 extending downward is provided in the center of the two spaced-apart recesses 917. The light-shielding arm 918 may be formed from an opaque material or formed by coating an opaque material, and prevents optical interference from being formed between the optical elements involved in the pressing operation after the components on the circuit board 105 are pressed by the button plates 927 on both sides, thereby affecting 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 processed and assembled by bonding, engagement, etc., but 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 comprising 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 circumferentially, and in the assembled state, the stepped structure is a step that rises continuously from the outside to the inside. This continuously rising stepped structure provides sufficient space on the underside of the button assembly, allowing it to accommodate more parts, and at the same time increases the elastic force of the bracket, allowing the button assembly to recover more easily after being pressed, and increases the settable length of the waterproof rib of the top cover, thereby enhancing the waterproof effect of the button assembly.

[0065] Finally, note that each example in this specification is described incrementally, each example focuses on its differences from the others, and identical or similar parts between examples may be referenced to one another.

[0066] The above embodiments are used to illustrate the technical solutions of the present disclosure and are not limiting thereto. While the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in each of the above embodiments can still be modified or some of their technical features can be substituted equally, and that such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present disclosure.

Claims

1. An automatic cleaning device, A mobile platform configured to automatically move its operating surface, the mobile platform including a cover plate that constitutes at least a portion of the top surface of the mobile platform, The button assembly assembled on the cover plate, Includes, The aforementioned button assembly includes a button cap and a bracket. The button cap is assembled to the bracket, The bracket includes a stepped structure extending along the circumferential direction, and is an automatic cleaning device.

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

3. The automatic cleaning device according to claim 1, wherein the bracket includes at least one side wall, and an assembly portion is formed on the inside of the at least one side wall.

4. The bracket includes a first side wall that extends continuously in the circumferential direction along the outer circumference of the bracket, and a second side wall that extends continuously in the circumferential direction along the interior of the bracket. The automatic cleaning device according to claim 1, wherein a first assembly portion is formed between the first side wall and the second side wall, and a second assembly portion is formed within the second side wall.

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

6. The automatic cleaning device according to claim 1, wherein one positioning hole is provided at each end of the bracket, a positioning column is provided on the lower surface of the cover plate corresponding to the positioning hole, and the positioning column passes through the positioning hole to secure the bracket.

7. The bracket further includes a button plate connected via at least one elastic arm, The aforementioned button plate is configured to move downward in response to an external force and perform a pressing function. The automatic cleaning device according to claim 4, wherein the elastic arm is configured to return the button plate to its original position.

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

9. The button cap includes a first projection and a second projection that extend downward around the pressing body portion. The automatic cleaning device according to claim 7, wherein when the button cap is assembled to the bracket, the first projection and the second projection are fitted to the first assembly part and the second assembly part, respectively.

10. The automatic cleaning device according to claim 9, wherein the button cap connects the first projection and the second projection and includes a third projection that extends upward around the pressing body.

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

12. The automatic cleaning device according to claim 11, wherein the cover plate has a button mounting hole, the pressing body is assembled into 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 according to claim 12, wherein the at least one waterproof rib is assembled into the first groove and / or second groove.

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

15. The cover plate includes a first waterproof rib and a second waterproof rib that extend downward around the button mounting hole. The automatic cleaning device according to 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. The automatic cleaning device according to claim 9, wherein there are two recesses spaced apart within the second projection, and in the assembled state, the recesses are configured to accommodate the button plate.

17. The automatic cleaning device according to claim 16, wherein a light-shielding arm extending downward is provided in the center of two recesses that are spaced apart.

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