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 to a Chinese patent application filed on January 11, 2022, with 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 more and more popular, bringing convenience to family life. There are various types of cleaning robots, including sweeping robots, mopping robots, and integrated sweeping and mopping robots. As the popularity of cleaning robots increases, the functions and structures of cleaning robots become more complex, and the production costs become higher and higher.

[0004] With existing technology, some cleaning robots have added structures and functions such as automatic charging, automatic dust collection, lifting and vibrating, making the cleaning robot more intelligent. At the same time, 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 step 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 side wall, the assembly being formed on an interior side of the at least one side wall.

[0008] In some embodiments, the bracket includes a first side wall extending circumferentially and continuously along an outer periphery of the bracket and a second side wall extending circumferentially and continuously along an interior of the bracket, a first assembly portion formed between the first side wall and the second side wall, and a second assembly portion formed within the second side wall.

[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 upon 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 portion and at least one protrusion extending downwardly around the pressing body portion, the at least one protrusion fitting into an assembly formed on the inside of the at least one side wall when the button cap is assembled to the bracket.

[0013] In some embodiments, the button cap includes a first protrusion and a second protrusion extending downwardly around the pressing body portion, and when the button cap is assembled to the bracket, the first protrusion and the second protrusion are adapted to fit into the first assembly portion and the second assembly portion, 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 press body portion.

[0015] In some embodiments, the button cap further includes a first groove and a second groove extending around the third protrusion along opposite sides of the third protrusion, wherein a depth of the first groove is greater than a 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 a top surface of the pressing body and a top surface of the cover plate are substantially flush with each other or slightly lower than the top surface of the pressing body.

[0017] In some embodiments, the cover plate further includes at least one waterproof rib extending downwardly around the button mounting hole, the at least one waterproof rib being 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 in an interference fit with the first groove and / or the second groove via the bump.

[0019] In some embodiments, the cover plate includes a first waterproof rib and a second waterproof rib extending downwardly 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, the second projection includes 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 centrally between the two spaced apart recesses.

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

[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 includes a soft rubber button cap and a hard rubber bracket, the button cap is assembled to the bracket, the bracket includes a stepped structure extending along a circumferential direction, and the stepped structure is a continuously rising step in an assembled state, which provides sufficient space under the button assembly to accommodate more components, and at the same time increases the elasticity of the bracket, making it easier for the button assembly to return to its original position after being pressed, and further increases the length that can be installed of the waterproof rib of the top cover, thereby improving the waterproof effect of the button assembly.

[0024] The accompanying drawings herein are incorporated in and constitute a part of this specification, illustrating embodiments that are applicable to the present application, and are used together with the specification to interpret 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 labor. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is a perspective view of an automatic cleaning device according to some embodiments of the present application; [Diagram 2] FIG. 1 is a schematic diagram of a bottom structure of an automatic cleaning device according to some embodiments of the present application; [Diagram 3]FIG. 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] FIG. 1 is a schematic top view of a button bracket of an automatic cleaning device according to some embodiments of the present application; [Diagram 5] FIG. 1 is a schematic diagram showing a bottom view of a button bracket of an automatic cleaning device according to some embodiments of the present application; [Figure 6] FIG. 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] FIG. 1 is a schematic diagram of an automatic cleaning device according to some embodiments of the present application, viewed from below a button cap. [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] FIG. 2 is a schematic structural diagram of a cover plate of an 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 Turnaround Assembly 150 Cleaning Module 151 Dry Cleaning Module 152 Side Brush 153 Main Brush Module 300 Dust Box 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 Shading arm DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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, but obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor 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. The singular forms "a," "the," and "the" used in the examples of this application and the appended claims are also intended to include the plural, and "plurality" generally includes at least two, unless the context clearly indicates otherwise.

[0029] It should be noted that the term "and / or" as used herein is merely an explanation of 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 addition, in the embodiments of the present application, terms such as first, second, and third may be used for the purpose of explanation, but it should be understood that the present application should not be limited to these terms. These terms are used only for the purpose of distinction. For example, the first may be called the second, and similarly, the second may be called the first, without departing from the scope of the embodiments 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 includes other elements not expressly listed or inherent to 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 apparatus according to an exemplary embodiment. As shown in FIG. 1 and FIG. 2, the automatic cleaning apparatus may be a vacuum cleaning robot, a mopping / brushing robot, a window climbing robot, etc., and the automatic cleaning apparatus 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 a control surface in a target direction. The control 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, where the floor surface is the control surface, the automatic cleaning device may be a window cleaning robot, where the automatic cleaning device works on a glass exterior surface of a building, where the glass is the control surface, and the automatic cleaning device may be a pipe cleaning robot, where the automatic cleaning device works on an inner surface of a pipe, where the inner surface of the pipe is the control surface. Purely for illustrative purposes, a mopping robot is used as an example in the present application.

[0035] In some embodiments, the mobile platform 100 may be an autonomous mobile platform or a non-autonomous mobile platform. The autonomous mobile platform means that the mobile platform 100 itself can automatically and adaptively make operational decisions in response to unexpected environmental inputs, while the non-autonomous mobile platform itself cannot adaptively make operational decisions in response to unexpected environmental inputs, but can operate according to a predetermined procedure or a certain logic. Correspondingly, when the mobile platform 100 is an autonomous mobile platform, the target direction may be determined autonomously by an automatic cleaning device, and when the mobile platform 100 is a non-autonomous mobile platform, the target direction may be set by a system or manually. When 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 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 other sensing devices such as ultrasonic sensors (not shown), infrared sensors (not shown), magnetometers (not shown), accelerometers (not shown), gyroscopes (not shown), and odometers (not shown), and provides various position information and moving status information of the equipment to the control system 130.

[0037] In order to more clearly explain the behavior of the automatic cleaning device, the following directions are defined, the automatic cleaning device can move on the floor surface by various combinations of movements about three mutually perpendicular axes defined by the moving platform 100: the lateral axis Y, the front-rear axis X, and the central vertical axis Z. The forward driving direction along the front-rear axis X is designated as "forward", and the rear driving direction along the front-rear axis X is designated 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". In addition, 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 moving direction of the automatic cleaning device, 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] 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 prevent damage to the automatic cleaning device. The above "front" refers to the same side as the moving direction of the automatic cleaning device, and the above "rear" refers to the opposite side to the moving direction of the automatic cleaning device.

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

[0040] Each assembly in the sensing system 120 may operate independently or in concert to more precisely 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 surface material, cleanliness, etc., which can be combined with cameras, laser ranging devices, etc. for more precise 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 at the front portion 111 of the moving platform 100, and when the drive wheel assembly 141 propels the automatic cleaning device to run on the floor surface during the cleaning process, the buffer 122 detects one or more events (or objects) in the running path of the automatic cleaning device via a sensor system, e.g., an infrared sensor, and the automatic cleaning device may detect the event (or object), e.g., an obstacle, a wall, by the buffer 122, and control the drive wheel assembly 141 in response to the event (or object), for example, to move away from the obstacle.

[0043] The control system 130 is provided on a circuit board in the mobile platform 100 and includes a central processing unit, an application processor, etc., which communicates with a non-transitory memory such as a hard disk, a flash memory, a random access memory, etc., and the application processor receives environmental information sensed by the plurality of sensors from the sensing system 120, and 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 a laser ranging device, etc., and autonomously determines a travel path based on the environmental information and the environmental map, and then controls operations such as forward, backward, and / or turning of the drive system 140 according to the autonomously determined travel path. Furthermore, the control system 130 can determine whether to operate 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 information 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 working state of the vacuum cleaner (e.g., crossing a threshold, riding on a carpet, being on a cliff, being caught above or below, the dust box being full, being lifted, etc.), and gives specific next operation strategies according to different situations, so that the work of the automatic cleaning device can better meet the owner's requirements and provide a better user experience. Furthermore, the control system can plan the most efficient and reasonable cleaning path and cleaning method according to the instant map information drawn by SLAM, which can greatly improve the cleaning efficiency of the automatic cleaning device.

[0045] Based on the specific distance and angle information, such as x, y and θ components, the drive system 140 can execute the drive command to steer the automatic cleaning device to move across the floor surface. As shown in FIG. 2, the drive system 140 includes a drive wheel assembly 141, and the drive system 140 can simultaneously control the left and right wheels, and in order to more precisely control the device 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 the horizontal axis defined by the mobile platform 100.

[0046] In order for the automatic cleaning device to move more stably on the floor surface or have a 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 the structural form thereof includes but is not limited to a universal wheel. The diverting assembly 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, which are connected to a microcomputer control circuit. The main body is connected to a charging pile for charging through a charging electrode provided on the side or bottom of the main body. If dust adheres to the exposed charging electrode, the plastic body around the electrode will melt and deform due to the cumulative effect of electric charge during the charging process, and the electrode itself will deform, resulting in a problem that charging cannot continue normally.

[0048] The man-machine interactive system 170 includes keys on a host panel, which are available for the 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 a map of the environment in which the device is installed and the location of the device to the user, providing the user with richer and more convenient function items.

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

[0050] The dry cleaning module 151 includes a roller brush, a dust box, a fan, and an air outlet. The roller brush, which is in contact with the floor surface to a certain extent, sweeps up the dust on the floor surface to the front of the dust suction port between the roller brush and the dust box, and the dust is sucked into the dust box by the suction gas generated by the fan passing through the dust box. The dust removal capacity of a vacuum cleaner is characterized by the dust pickup efficiency (DPU), which is affected by the roller brush structure and material, the wind power utilization rate of the duct consisting of the dust suction port, the dust box, the fan, the air outlet, and their connecting members, and the type and power of the fan, and is a complex system design issue. Compared with ordinary plug-in dust suction devices, the improvement of dust removal capacity is of great significance for automatic cleaning devices with energy limitations. This is because the improvement of dust removal capacity directly and effectively reduces the required energy, that is, a device that can clean 80 square meters of floors on a single charge can be evolved to clean more than 180 square meters on a single charge. In addition, by reducing the number of charging times, the battery life is also greatly extended, and users can replace the battery less frequently. More intuitively and importantly, the improvement of the dust removal ability is the most obvious and important user experience, and the user can directly conclude whether the device cleans cleanly or wipes cleanly. The dry cleaning module may further include a side brush 152 having a rotating shaft, which is at an angle to the floor surface and moves the dirt to the roller brush area of ​​the cleaning module 150.

[0051] As a selectable 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, where the wet cleaning module includes a water tank, a cleaning head, a driving unit, etc., where water in 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 driving of the driving unit.

[0052] The pressing structure on the cover plate of the existing automatic cleaning device is complicated. For example, most of the button structures of the existing cleaning devices are provided with a soft rubber bracket on a hard rubber bracket, and after bonding the hard rubber button cap and the soft rubber bracket, the soft rubber bracket and the equipment top casing decorative cover are bonded with double-sided adhesive tape, and the hard bracket is fixed to the top casing through a hook on the lower side. Such a button assembly structure is complicated, has a large number of parts, requires a long assembly time, is complicated, and is expensive. Due to such a multi-layer structure, when attaching the soft rubber bracket to the equipment top casing decorative cover, the soft rubber is easily misaligned, making it difficult to remove the button, and when removing the double-sided adhesive tape and the soft rubber are firmly bonded, so that the double-sided adhesive tape and the soft rubber are easily destroyed, and the button cannot be reused.

[0053] Therefore, the embodiment of the present application provides an automatic cleaning device without a flip cover, which simplifies 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, so that more electronic components can be arranged in the space, and at the same time, the elastic force of the button assembly is increased and it is easy to perform pressing. 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 part of the top surface of the moving platform, and a button assembly 900, which is used to be manually operated and pressed to control the operation of the automatic cleaning device, 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 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. When a user operates the button assembly, the pressing body only needs to be directly applied with a force, 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 identify the location of the button assembly by touch alone. Here, the button assembly 900 can be applied to any device housing that requires a mechanical button, including, but not limited to, a cleaning robot, a mopping robot, a sweeping / mopping robot, a handy robot, a watering robot, and the like, and the button assembly may be typically provided on the top surface of the housing of the mechanical device, or may be provided on the side of the housing of the mechanical device, and is not limited thereto. The housing of the mechanical device is typically made of a hard plastic, resin, metal, or alloy material, and is not limited thereto.

[0054] Specifically, as shown in Fig. 4 to Fig. 7, the button assembly 900 includes a button cap 910 and a bracket 920, the button cap 910 is usually made of a soft rubber opaque material, which provides sealing, waterproof and light-proof properties during the interference fit assembly, and the bracket 920 is usually made of a hard rubber material, which provides a supporting function during the button cap assembly process and is fitted into a hard cover plate to fix the button cap. As shown in Fig. 3, during the assembly process, the soft rubber button cap is assembled to the cover plate from bottom to top, and at least the pressing body part 911 is assembled into the corresponding button mounting hole 802, and then the hard rubber bracket is assembled under the soft rubber button cap, and the fixing is realized by the positioning post body 801 on the cover plate 800 and the positioning hole 925 on the bracket 920, forming a button assembly, and the two circular positioning holes 925 on the button bracket and the positioning post body 801 with the fastening 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 FIG. 5, the bracket 920 has a stepped structure 930 extending along the circumferential direction, and the stepped structure is a step that rises continuously from the outside to the inside or from the inside to the outside in an assembled state. Compared with a generally flat bracket, the raised portion in the stepped structure provides other components with arrangement space and design freedom, and the space above the bracket can be effectively utilized, and specifically, the direction of the step can be designed according to the space requirements of other components. Optionally, the stepped structure is a step that rises continuously from the outside to the inside in an assembled state, and the step that rises continuously from the outside to the inside increases the extra space, and since the increased extra space is in the center, sufficient space required for the pressing operation is ensured below the corresponding pressing body, which contributes to rationally setting the pressing stroke and elastic recovery, and can improve the user's experience. The steps of each layer of the stepped structure 930 extend along the circumferential direction parallel to the overall outer circumferential contour shape of the bracket 920 to form a closed structure, for example, but not limited to, a closed ellipse, circle, square, rectangle, etc. The step structure 930 has a step that rises continuously from the outside to the inside, and forms a substantially tapered step structure, extending upward from the outer step to the inner step. The specific number of steps is not limited, and may be, for example, 2 to 5 steps, and may be, for example, 2 to 3 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 the same height, or may be steps of different widths and different heights. The bracket 920 has a step structure 930 extending along the circumferential direction to form a larger protruding space below the bracket, and the lower part of the bracket is the circuit board 700 that is butted against it, as shown in Fig. 8, the protruding space at this time provides convenience in component design for the circuit board compared to a closed space, and more electronic components can be placed in the space that would normally be occupied by the lower part of the bracket. In addition, the bracket 920 has a step structure 930 extending along the circumferential direction to form a larger protruding space below the bracket, which increases the elasticity of the hard 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] In some embodiments, as shown in FIG. 4, the bracket 920 includes a first side wall 921 extending continuously in a circumferential direction along the outer periphery of the bracket 920 and a second side wall 922 extending continuously in a circumferential direction along the inner side of the bracket 920, where a first assembly part 923 is formed between the first side wall 921 and the second side wall 922, and a second assembly part 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, for example, but not limited to, a closed oval, circle, square, rectangle, etc. The first side wall 921 and the second side wall 922 extending closed form a first assembly part 923 and a second assembly part 924 that receive the first protrusion 912 and the second protrusion 913 of the button cap, and serve to fix and support the entire button cap.

[0057] Specifically, in some embodiments, at least a portion of the step structure is located in the first assembly part 923, and another portion of the step structure is located in the second assembly part 924. For example, the first assembly part 923 has at least one step structure, and the second assembly part 924 has the highest step surface of the step structure. The first side wall 921 and the second side wall 922 also form a height structure substantially with the elevation of the step 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 penetrates 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 while providing 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, the button plate being configured to move downward under the action of an external force to perform a pressing function, and the elastic arm 926 being configured to restore the button plate 927. As shown in FIG. 4, a pair of button plates 927 are usually located inside the bracket and are symmetrically arranged, and the button plate 927 includes a button plate head 9271 that contacts the button cap abutment 9171 and a button plate tail 9272 that presses and contacts the components of the circuit board 105. Usually, the width of the button plate head 9271 is larger than the width of the button plate tail 9272. If the width of the button plate head 9271 is large, it is easy to receive a pressing force, and if the button plate tail 9272 is small, the contact and pressing of the element can be accurately performed, and erroneous pressing can be avoided. The button plate 927 is connected to the inner edge of the bracket 920 via an elongated elastic arm 926, and one or more elongated elastic arms 926 are provided around the button plate 927 to provide the button plate 927 with sufficient pressing and restoring elastic force.

[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 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, where the first protrusion 912 and the second protrusion 913 are fitted to the first assembly part 923 and the second assembly part 924, respectively, when the button cap 910 is assembled to the bracket 920. In order to fit the step structure inside the first assembly part 923 and the second assembly part 924, the length of the first protrusion 912 extending downward is greater than the length of the second protrusion 913 extending downward. 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 FIG. 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 in a circumferential direction 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, and the depth of the first groove 915 is greater than the depth of the second groove 916. As shown in FIG. 9 and FIG. 10, FIG. 10 is an enlarged view of the bottom view of the cover plate at point D in FIG. 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 which point 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 from bottom to top into the button mounting hole 802. The edge 804 constitutes one of the waterproof ribs of the cover plate 800, and a side wall of the edge 804 includes at least one bump. The pressing body 911 is assembled into the button mounting hole 802 by tight fitting, thereby achieving a sealed connection and realizing the effects of waterproofing and preventing light leakage. Further, in some embodiments, the cover plate 800 includes a waterproof rib 803 extending downward around the button mounting hole 802, and the waterproof rib 803 is assembled into the first groove 915, a side wall of the waterproof rib 8003 includes at least one bump, and the waterproof rib 8003 is press-fitted 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 press-fitted into the first groove 915, and the downward extending length of the waterproof rib 803 is greater than the length of the edge of the button mounting hole 802, so that the pressing body 911 and the button mounting hole 802 are further sealed and connected, and good waterproof and light-proof effects are achieved.

[0062] In some embodiments, as shown in Figures 7 and 8, where Figure 8 is a cross-sectional view taken along line AB in Figure 1. Two recesses 917 spaced apart from each other are provided in the second protrusion 913, 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 assembly of the button cap and the bracket is completed, the button plate head 9271 abuts closely against the abutment portion 9171 and is susceptible to a pressing force.

[0063] In some embodiments, as shown in Fig. 7 and Fig. 8, a light-shielding arm 918 is provided at the center of the two recesses 917 provided at a distance from each other, and extends downward. 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 being formed between optical elements related to the pressing operation after the components on the circuit board 105 are pressed by the button plates 927 on both sides, thereby preventing the user from obtaining optically presented information. The light-shielding arm 918 may be integrally molded with the button cap, or may be later processed and synthesized by gluing, engagement, etc., and is not limited thereto.

[0064] 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 includes a soft rubber button cap and a hard rubber bracket, the button cap is assembled to the bracket, the bracket has a stepped structure extending along a circumferential direction, and the stepped structure is a stepped structure that is continuously rising from the outside to the inside under the assembled state. The continuously rising stepped structure provides sufficient space under the button assembly, so that more components can be accommodated, and at the same time, the elastic force of the bracket can be increased, so that the button assembly can recover more easily after being pressed, and the settable length of the waterproof rib of the top cover can be increased, so as to improve the waterproof effect of the button assembly.

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

[0066] The above embodiments 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 embodiments. However, those skilled in the art can still modify the technical solutions described in the above embodiments, or equivalently replace some of the technical features thereof, and it should be understood that these modifications and replacements do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An 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; Including, The button assembly includes a button cap and a bracket; The button cap is assembled to the bracket; The bracket includes a stepped structure extending circumferentially.

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, an assembly being formed inside the at least one side wall.

4. The bracket includes a first side wall that extends continuously in a circumferential direction along an outer periphery of the bracket, and a second side wall that extends continuously in a circumferential direction along an interior of the bracket, 2. 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 of 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 according to claim 1, wherein 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.

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

8. the button cap includes a pressable body and at least one protrusion extending downwardly around the pressable 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 downwardly around the pressing body; 8. 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 portion and the second assembly portion, respectively.

10. 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 upwardly 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 opposite 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 of claim 11, wherein the cover plate has a button mounting hole, the pressing body is assembled to the button mounting hole, and a top surface of the pressing body is substantially flush with or slightly lower than a top surface of the cover plate.

13. the cover plate further includes at least one waterproof rib extending downwardly 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. 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; 15. 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 there are two spaced apart recesses in the second projection, the recesses being configured to receive the button plate in an assembled state.

17. 17. The automatic cleaning device of claim 16, further comprising a downwardly extending light blocking arm disposed centrally between the two spaced recesses.

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