Lifting device, cleaning device and cleaning system

Abstract

Disclosed in the present application are a lifting device, a cleaning device and a cleaning system. The lifting device is connected to a working assembly, and the lifting device comprises a drive assembly and a connecting assembly, wherein the drive assembly is connected to the connecting assembly. The lifting device has a lifting portion and a transmission portion, and the lifting portion rotates relative to the transmission portion to drive the working assembly to ascend and descend relative to a working surface. The lifting device enables a differential motion between the lifting portion and the transmission portion, and the lifting portion ascends or descends under the action of the differential motion, that is, the ascending or descending of the working assembly is realized. On the basis that the cleaning device can realize automatic lifting and automatic dismounting of the working assembly, a drive structure of the working assembly having the functions of automatic lifting and automatic dismounting can be simplified, thereby lowering costs.

Description

Lifting device, cleaning device and cleaning system

[0001] This application claims priority to patent applications CN202510377327.9 filed on March 27, 2025 and CN202510428745.6 filed on April 7, 2025, the entire contents of which are incorporated herein by reference. [Technical Field]

[0002] This application relates to the field of cleaning equipment technology, and in particular to a lifting device, a cleaning device, and a cleaning system. [Background Technology]

[0003] With the development of technology, fewer people are choosing to manually clean their homes, while more are opting for automated cleaning devices (such as robotic vacuums and mops). These devices clean surfaces by contacting the work surface (e.g., the floor). In related technologies, cleaning devices often feature work components (such as side brushes and cloths) that can automatically raise and lower as well as disassemble to meet a wider range of cleaning needs.

[0004] However, the driving structures for the automatic lifting and disassembly of the working components in the cleaning devices of related technologies are complex and costly. Therefore, how to simplify the driving structure for the automatic lifting and disassembly of the working components and reduce costs is a technical problem that needs to be solved. [Summary of the Invention]

[0005] This application provides a lifting device, a cleaning device, and a cleaning system that can achieve automatic lifting and disassembly of working components, while simplifying the drive structure for the automatic lifting and disassembly functions of the working components and reducing costs.

[0006] To solve the above-mentioned technical problems, this application provides a lifting device that is connected to a working component. The lifting device includes a drive component and a connecting component. The drive component is connected to the connecting component. The lifting device has a lifting part and a transmission part. The lifting part rotates relative to the transmission part to drive the working component to rise and fall relative to the working surface.

[0007] To address the aforementioned technical problems, this application provides another aspect of a cleaning device, which includes a body and a first cleaning component. The body has a limiting structure; the first cleaning component includes the aforementioned lifting device and a working component. The lifting device is mounted on the body, and the working component is detachably connected to a connecting component within the lifting device. The connecting component is movable up and down. The limiting structure is used to prevent the working component from moving upwards during the upward movement of the connecting component, thereby separating the working component from the connecting component.

[0008] To address the aforementioned technical problems, this application also provides a cleaning system, which includes the aforementioned cleaning device and a cleaning base station. The cleaning device is adapted to cooperate with the cleaning base station, and the cleaning base station is used to clean and / or charge the cleaning device.

[0009] The lifting device, cleaning device, and cleaning system provided in some embodiments of this application include a lifting device that can drive the lifting part to rotate relative to the transmission part, thereby creating a differential motion between the lifting part and the transmission part. The lifting part rises or falls under the action of the differential motion, which also realizes the rising and falling of the working component. The cleaning device can realize automatic lifting and automatic disassembly of the working component, and can simplify the drive structure of the automatic lifting and automatic disassembly function of the working component, thereby reducing costs. By setting up a cleaning base station, the cleaning device can be cleaned and / or charged when the cleaning work is completed. [Attached Image Description]

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0011] Figure 1 is a cross-sectional view of a cleaning device in some embodiments of this application;

[0012] Figure 2 is a cross-sectional view of the working component and the lifting device in Figure 1 when they are separated;

[0013] Figure 3 is a schematic diagram of the frame of the lifting device in some embodiments of this application;

[0014] Figure 4 is a schematic diagram of the frame of the lifting device in some embodiments of this application;

[0015] Figure 5 is a schematic diagram of the frame of the lifting device in some embodiments of this application;

[0016] Figure 6 is a structural schematic diagram of the lifting device shown in Figure 5;

[0017] Figure 7 is a cross-sectional schematic diagram of the lifting device shown in Figure 5;

[0018] Figure 8 is a schematic diagram of the frame of the lifting device in some embodiments of this application;

[0019] Figure 9 is a structural schematic diagram of the lifting device shown in Figure 8;

[0020] Figure 10 is a cross-sectional schematic diagram of the lifting device shown in Figure 8.

[0021] Reference numerals: 10. Lifting device; 101. Lifting part; 102. Transmission part; 11. Base; 20. Cleaning device; 201. Working component; 202. Connecting component; 203. Drive component; 21. Body; 211. Limiting structure; 22. First cleaning component; 301. Connecting shaft; 302. First connecting member; 303. Second connecting member; 304. First limiting member; 305. Second limiting member; 306. Clearing member; 307. First elastic member; 308. Base plate; 309. Third limiting member; 310. Fifth limiting member; 311. Sixth limiting member; 312. Second elastic member; 32. Receiving cavity; 33. Guide member; 34. Guide channel; 341. Fourth threaded structure; 342. Threaded locking structure; 36. First transmission gear; 37. Second transmission gear; 401. Groove; 402. Protrusion; 403. First housing; 404. First component; 405. Second component; 4051. First protrusion; 4031. Connector; 4032. First housing portion; 4033. Second housing portion; 406. Second protrusion; 407. Second housing; 408. Fourth limiting component; 409. Third housing; 410. Third protrusion; 42. Mating structure; 43. Mating component; 431. External thread portion; 4311. Third thread structure; 432. Damping portion; 441. First transmission structure; 442. Second transmission structure; 443. Damping sleeve; 45. Pressing structure; 451. Pressing block; 452. Pressing spring; 461. Magnetic main body; 471. Guide portion; 51. Mounting plate; 52. Mounting slot; 521. Mounting port; 53. Protective cover; 54. Fixing bracket; 541. Guide slot; 56. Cleaning component; O1. Third accommodating space; O2. Fourth accommodating space; O3. Fifth accommodating space.

Detailed Implementation Methods

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] Referring to Figures 1-10, the cleaning device 20 includes a first cleaning component 22, which includes a lifting device 10 and a working component 201 according to any of the following embodiments. The lifting device 10 includes a connecting component 202. The working component 201 and the connecting component 202 are detachably connected. When the connecting component 202 moves upward, the working component 201 and the connecting component 202 are separated.

[0026] According to some embodiments of this application, please refer to Figures 1-10. The cleaning device 20 includes a body 21 and a first cleaning component 22. The body 21 has a limiting structure 211, which can be located at the bottom of the body 21. A lifting device 10 is installed on the body 21, and a drive component 203 is connected to a connecting component 202 to drive the connecting component 202 to move up and down.

[0027] The drive component 203 drives the connecting component 202, causing the connecting component 202 to rise or fall, thereby raising or lowering the working component 201. When the drive component 203 drives the connecting component 202 to fall, the working component 201 also falls; when the drive component 203 drives the connecting component 202 to rise, the working component 201 also rises. The raising and lowering of the working component 201 can be controlled as needed. For example, when the working component 201 needs to clean the working surface, it can be lowered to contact the working surface for cleaning; when cleaning the working surface is not required, the connecting component 202 can be raised to store the working component 201 in the machine body 21. For example, if the working surface is uneven during the cleaning process, the height of the working component 201 can be adjusted by raising and lowering it to adapt to different working conditions.

[0028] The first cleaning component 22 can be used for wet cleaning. The cleaning device 20 may include a liquid supply component for supplying cleaning fluid to the working component 201 of the first cleaning component 22. The working component 201 of the first cleaning component 22 may include a mounting plate 51 and a cleaning element 56. The cleaning element 56 is mounted on the mounting plate 51. The connecting component 202 can be detachably connected to the cleaning plate of the working component 201. The cleaning element 56 of the first cleaning component 22 is made of an absorbent material, such as a fibrous material. For example, the cleaning element 56 of the first cleaning component 22 may be a cloth, sponge, etc.

[0029] The working component 201 and the connecting component 202 are detachably connected, allowing for the disassembly of the working component 201. For example, when cleaning is required, the working component 201 can be removed. Similarly, if certain work surfaces are unsuitable for cleaning by the first cleaning component 22, the working component 201 can be removed. For instance, when the first cleaning component 22 is used for wet cleaning, if the work surface is unsuitable for wet cleaning, such as a soft material like carpet, the working component 201 can be separated from the connecting component 202, preventing wastewater from the working component 201 from contaminating the work surface.

[0030] The limiting structure 211 on the body 21 is used to block the upward movement of the working component 201 during the upward movement of the connecting component 202, so as to separate the working component 201 from the connecting component 202. When the first cleaning component 22 is working normally, the drive component 203 drives the connecting component 202 to move the working component 201 up and down. When it is necessary to remove the working component 201 of the first cleaning component 22, the drive component 203 can drive the connecting component 202 to move upward, so that the working component 201 moves upward until it interferes with the limiting structure 211 on the body 21. The connecting component 202 continues to move upward, while the working component 201 is blocked by the limiting structure 211 and cannot continue to move upward. In this way, as the connecting component 202 continues to move upward, the working component 201 gradually separates from the connecting component 202 until the working component 201 falls off, thereby realizing the automatic disassembly of the working component 201.

[0031] Based on the principle that the working component 201 is lifted and lowered by driving the connecting component 202 with the drive component 203, the interference between the working component 201 and the machine body 21 in the vertical direction is increased, and the limiting structure 211 on the machine body 21 is used to achieve automatic disassembly or detachment of the working component 201. Specifically, the vertical interference between the working component 201 and the machine body 21 can be increased by increasing the lifting stroke of the connecting component 202.

[0032] When it is necessary to install the working component 201 onto the machine body 21, the drive component 203 can drive the lifting part to descend to a suitable position so as to facilitate manual or automatic connection of the working component 201 and the lifting part.

[0033] Optionally, at least a portion of the base 11 of the body 21 can constitute the aforementioned limiting structure 211. By using at least a portion of the base 11 of the body 21 as the limiting structure 211, it is possible to eliminate the need to separately set a limiting structure 211 on the body 21, thus simplifying the overall structure.

[0034] According to an embodiment of the cleaning device 20 of the present invention, the driving component 203 drives the connecting component 202 to move up and down, thereby enabling the working component 201 to achieve a lifting function. Furthermore, by increasing the amount of interference between the working component 201 and the machine body 21 in the vertical direction, and simultaneously utilizing the limiting structure 211 on the machine body 21, when it is necessary to detach the working component 201, the driving component 203 drives the connecting component 202 to move upwards, causing the working component 201 to move upwards until it interferes with the limiting structure 211 on the machine body 21. At this point, the connecting component 202 continues to move upwards, while the working component 201 is restrained by the limiting structure 211. The obstruction at 1 prevents further upward movement. As the connecting component 202 continues to move upward, the working component 201 gradually separates from the connecting component 202 until the working component 201 detaches, thus enabling automatic disassembly of the working component 201. The lifting device 10 that drives the working component 201 to rise and fall achieves automatic disassembly of the working component 201, eliminating the need for an additional disassembly mechanism to drive the automatic disassembly of the working component 201. This simplifies the drive structure for driving the lifting and automatic disassembly of the working component 201, reducing costs. The simplified drive structure also facilitates the miniaturization of the cleaning device 20.

[0035] According to some embodiments of the present invention, the cleaning device 20 further includes a second cleaning component (not shown), which is disposed on the body 21. The first cleaning component 22 is used for wet cleaning, and the second cleaning component is used for dry cleaning. The cleaning device 20 may include a liquid supply component for supplying cleaning fluid to the working component 201 of the first cleaning component 22, and the working component 201 of the second cleaning component may include a brush. When the working surface is a hard material such as marble floor, tile floor, or wooden floor, the first cleaning component 22 can be used for cleaning; when the working surface is a soft material such as carpet, the second cleaning component can be used for cleaning. The first cleaning component 22 and the second cleaning component can work simultaneously, or the first cleaning component 22 can work alone; when cleaning objects that cannot be treated with water, such as carpets, the first cleaning component 22 does not work, and the second cleaning component works to avoid contaminating the working surface. By setting the first cleaning component 22 and the second cleaning component, the cleaning device 20 can have different cleaning functions to meet more cleaning needs.

[0036] According to some embodiments of the present invention, referring to Figures 1-2, the connecting component 202 has a first position, a second position, and a third position arranged sequentially from top to bottom. The connecting component 202 is configured to drive the working component 201 to move up and down during movement between the second position and the third position, and to separate the working component 201 from the connecting component 202 during movement from the second position to the first position. Specifically, the working component 201 is prevented from moving upward by the limiting structure 211, thereby separating the working component 201 from the connecting component 202.

[0037] For example, when the connecting component 202 is in the third position, the working component 201 contacts the working surface, enabling cleaning of the working surface; as the lifting part moves upward from the third position to the second position, the working component 201 gradually moves upward; when the lifting part is in the second position, the working component 201 disengages from the working surface; as the lifting part moves upward from the second position to the first position, the limiting structure 211 blocks the upward movement of the working component 201, causing the working component 201 to separate from the connecting component 202; when the connecting component 202 is in the first position, the working component 201 is completely separated from the connecting component 202.

[0038] When the working component 201 and the connecting component 202 of the first cleaning component 22 are normally connected, the working component 201 can work normally, and the connecting component 202 can be controlled to rise and fall between the second position and the third position as needed. For example, when the working component 201 needs to clean the working surface, the drive component 203 can drive the connecting component 202 to move downward from the second position to the third position, so as to drive the working component 201 to move downward, so that the working component 201 contacts the working surface; when the working component 201 contacts the working surface to clean the working surface, the drive component 203 can drive the connecting component 202 to rotate, so as to drive the working component 201 to rotate, in order to clean the working surface. For example, during the cleaning process of the working component 201, if the working surface is raised or there are low obstacles on the working surface, the drive component 203 can drive the connecting component 202 to move upward, thereby moving the working component 201 upward. When the cleaning device 20 passes over a higher position on the working surface or an obstacle, the drive component 203 can drive the connecting component 202 to move downward, thereby moving the working component 201 downward until it contacts the current working surface. This can adapt to different working conditions of the working surface. For example, when the working component 201 finishes cleaning the working surface, the drive component 203 can drive the connecting component 202 to move upward to a second position, thereby moving the working component 201 upward, so that the working component 201 can be stored in the body 21.

[0039] Specifically, when the connecting component 202 is in the third position, the working component 201 is located below the limiting structure 211 and is spaced apart from the limiting structure 211 in the vertical direction. When the connecting component 202 is in the second position, the working component 201 is located below the limiting structure 211, and the working component 201 and the limiting structure 211 are just in contact or the distance between the working component 201 and the limiting structure 211 is small. As the connecting component 202 moves upward from the third position to the second position, the distance between the working component 201 and the limiting structure 211 gradually decreases.

[0040] When it is necessary to automatically detach the working component 201, the drive component 203 drives the connecting component 202 to move upward to the first position, so that the working component 201 is disengaged from the connecting component 202. For example, when the connecting component 202 is in the third position or between the third and second positions, the drive component 203 drives the connecting component 202 to move upward to the second position. At this time, the working component 201 is just in contact with the limiting structure 211 or the distance between the working component 201 and the limiting structure 211 is small. The drive component 203 continues to drive the connecting component 202 to move upward. The working component 201 is blocked by the limiting structure 211 and cannot move upward with the connecting component 202. During the process of the drive component 203 driving the connecting component 202 to move upward from the second position to the first position, the working component 201 and the connecting component 202 gradually separate until the connecting component 202 moves upward to the first position, at which point the working component 201 falls off the machine body 21.

[0041] For example, when the connecting component 202 is in the second position, the working component 201 is just in contact with the limiting structure 211 or the distance between the working component 201 and the limiting structure 211 is small. The driving component 203 continues to drive the connecting component 202 to move upward, while the working component 201 is blocked by the limiting structure 211 and cannot move upward with the connecting component 202. During the process of the driving component 203 driving the connecting component 202 to move upward from the second position to the first position, the working component 201 and the connecting component 202 gradually separate until the connecting component 202 moves upward to the first position, at which point the working component 201 falls off the body 21.

[0042] When it is necessary to install the working component 201 onto the machine body 21, the drive component 203 can drive the connecting component 202 to move downward to the second position, or downward to the third position, or downward to a position between the third and second positions. At this time, the working component 201 can be connected to the connecting component 202 so that the working component 201 can be installed onto the connecting component 202 and the working component 201 can perform cleaning work normally.

[0043] When the cleaning device 20 is working, the drive assembly 203 drives the connecting shaft 301 to move up and down. When the connecting assembly 202 is in the third position, the working assembly 201 contacts the working surface, and the power transmission between the connecting shaft 301 and the mating part 43 is disconnected, allowing the connecting shaft 301 to rotate relative to the mating part 43, thus achieving the function of cleaning the floor. When the connecting assembly 202 moves from the third position to the second position, the working assembly 201 moves upward; when the connecting assembly 202 moves from the second position to the third position, the working assembly 201 moves downward. When component 202 is in the second position, the working component 201 is detached from the working surface. When the connecting component 202 moves from the second position to the first position, the limiting structure 211 prevents the working component 201 from moving upward. At this time, the first connecting component 302 and the second connecting component 303 separate from each other, and the mutual attraction between the first connecting component 302 and the second connecting component 303 gradually weakens. When the magnetic attraction force is less than the weight of the working component 201, the working component 201 separates from the connecting component 202, thereby achieving automatic detachment of the upper body 21 of the working component 201. When it is necessary to install the working component 201, the connecting component 202 can be lowered to the second position or below the second position, and the working component 201 can be installed to the lower end of the connecting component 202 by mutual attraction between the first connecting component 302 and the second connecting component 303.

[0044] According to some embodiments of the present invention, referring to FIG3, the lifting device 10 has a lifting part 101 and a transmission part 102. The lifting part 101 is rotatable relative to the transmission part 102 to drive the working component 201 to rise and fall relative to the working surface. Specifically, the frictional inertia between the lifting part 101 and the transmission part 102 is less than the self-weight inertia of the lifting part 101, so that the lifting part 101 and the transmission part 102 form a differential motion, thereby driving the working component 201 to rise and fall relative to the working surface.

[0045] In some embodiments, the frictional inertia refers to the rotational resistance torque generated by the frictional force of the contact surface between the lifting part 101 and the transmission part 102. The frictional inertia between the lifting part 101 and the transmission part 102 is related to the friction between the lifting part 101 and the transmission part 102.

[0046] Specifically, the frictional inertia between the lifting part 101 and the transmission part 102 is the frictional inertia generated when the transmission part 102 rotates clockwise or counterclockwise and rubs against the lifting part 101.

[0047] Alternatively, the frictional inertia between the lifting part 101 and the transmission part 102 is the frictional inertia between the lifting part 101 and the transmission part 102 when the lifting part 101 rotates clockwise or counterclockwise.

[0048] In some embodiments, the lifting part 101 is provided with a first friction structure, and the transmission part 102 is provided with a second friction structure. The first friction structure and the second friction structure are frictionally connected, so that frictional inertia can be generated between the lifting part 101 and the transmission part 102. The first friction structure and the second friction structure can be internal thread structure, external thread structure, or other types, which are not limited here.

[0049] Specifically, the first friction structure engages with the second friction structure. After the transmission part 102 starts to rotate, the lifting part 101 needs to wait for a period of time before rotating relative to the transmission part 102. Since the first friction structure is set on the lifting part 101, the first friction structure will also rotate with the lifting part 101. At this time, the frictional inertia between the lifting part 101 and the transmission part 102 is less than the self-weight inertia of the lifting part 101.

[0050] As the lifting unit 101 continues to rotate, when the frictional inertia between the lifting unit 101 and the transmission unit 102 is greater than or equal to the self-weight inertia of the lifting unit 101, the lifting unit 101 will no longer follow the transmission unit 102 in rotation. That is, the first friction structure will no longer follow the second friction structure in rotation. At this point, a height difference exists between the lifting unit 101 and the ground, enabling the lifting unit 101 to automatically rise. Similarly, when a height difference exists between the lifting unit 101 and the transmission unit 102, the lifting unit 101 will automatically descend.

[0051] In some embodiments, the moment of inertia of the lifting unit 101 is based on its own weight. Specifically, the moment of inertia refers to the inertial resistance torque caused by the mass (weight) of the lifting unit 101, which opposes the rotation of the lifting unit 101. The moment of inertia of the lifting unit 101 is related to its mass; the greater the mass of the lifting unit 101, the greater its moment of inertia. The range of the moment of inertia of the lifting unit 101 can be determined through repeated experiments. Based on this range, the weight of the lifting unit 101 is limited, thereby limiting the relationship between the moment of inertia of the lifting unit 101 and the frictional inertia between the lifting unit 101 and the transmission unit 102.

[0052] It is understood that when the lifting part 101 begins to rotate relative to the transmission part 102, the lifting part 101 will not rotate immediately. When the frictional inertia between the lifting part 101 and the transmission part 102 is less than the self-weight inertia of the lifting part 101, there is a differential motion between the lifting part 101 and the transmission part 102. The automatic raising and lowering of the lifting part 101 can be achieved based on the differential motion, without the need for other devices to control the lifting process of the lifting part 101. This reduces the number of devices used, thereby reducing the size of the lifting device 10 and reducing costs. Here, differential motion refers to the motion state in which the lifting part 101 and the transmission part 102 rotate at different speeds in the same drive system.

[0053] According to some embodiments of the present invention, referring to FIG4, the lifting device 10 is connected to the working component 201. The lifting device 10 includes a connecting component 202 and a driving component 203 that are connected to each other. The driving component 203 is connected to the working component 201 through the connecting component 202.

[0054] In some embodiments, the operation component 201 includes a sweeping component, which may be a mop disc, a turntable assembly, a rotating mop structure, or others, without limitation.

[0055] In some embodiments, the drive component 203 may be a motor, a driver, a gearbox assembly, or others, without limitation.

[0056] Based on the lifting device 10 shown in Figures 3 and 4, and referring to Figure 5, the transmission part 102 includes a connecting component 202. At this time, the working component 201 can rotate relative to the connecting component 202. The frictional inertia between the working component 201 and the connecting component 202 is less than the self-weight inertia of the working component 201, causing the working component 201 and the connecting component 202 to form a differential motion. Therefore, the working component 201 can rotate upwards or downwards under the action of the differential motion, without the need for other devices to control the lifting process of the working component 201. This reduces the number of devices used, thereby reducing the size of the lifting device 10 and reducing costs. It can be understood that at this time, the lifting device 10 does not have a lifting part 101, or the lifting part 101 is present but does not perform lifting operations.

[0057] Based on the lifting device 10 shown in Figure 5, a structural schematic diagram of the lifting device 10 can be seen in Figure 6, and a cross-sectional schematic diagram of the lifting device 10 can be seen in Figure 7.

[0058] Based on the lifting device 10 shown in Figures 6 and 7, the specific details are as follows:

[0059] In some embodiments, as shown in Figures 6 and 7, the connecting assembly 202 includes a connecting shaft 301, a first connecting member 302 (not shown in Figure 6), and a second connecting member 303. The first end (upper end) of the connecting shaft 301 is disposed within the driving assembly 203. The first connecting member 302 is connected to the second end (lower end) of the connecting shaft 301. The second connecting member 303 abuts against the second end of the first connecting member 302 away from the connecting shaft 301. The first connecting member 302 and the second connecting member 303 are disposed within the working assembly 201.

[0060] In some embodiments, the connecting assembly 202 includes a connecting shaft 301 and a first connector 302, and the working assembly 201 is provided with a second connector 303 that attracts the first connector 302. The first end (i.e., the upper end) of the connecting shaft 301 is disposed within the driving assembly 203, the first connector 302 is connected to the second end (i.e., the lower end) of the connecting shaft 301, and the second connector 303 abuts against the second end of the first connector 302 away from the connecting shaft 301. The first connector 302 and the second connector 303 are disposed within the working assembly 201.

[0061] In some embodiments, the connecting shaft 301 is part of the drive assembly 203, and the connecting shaft 301 is press-fitted to the drive assembly 203.

[0062] In some embodiments, the connecting shaft 301 is connected to the first connecting member 302 via fasteners. The first connecting member 302 is connected to the second connecting member 303 via fasteners. The fasteners can be bolts, screws, studs, or other types. Using fasteners as a connection medium allows for a secure connection between the connecting shaft 301 and the first connecting member 302, and between the first connecting member 302 and the second connecting member 303. Furthermore, the fasteners are detachably connected to the connecting shaft 301, the first connecting member 302, and the second connecting member 303, allowing for replacement of the connecting shaft 301, the first connecting member 302, and / or the second connecting member 303 as needed, thus expanding the application scenarios for the connecting shaft 301, the first connecting member 302, and the second connecting member 303.

[0063] In some embodiments, as shown in FIG7, a groove 401 is provided at the second end of the connecting shaft 301. The groove 401 can penetrate downward through the bottom surface of the connecting shaft 301. Specifically, the groove 401 can be provided at the lower end of the connecting shaft 301 and penetrate through the bottom surface of the connecting shaft 301. A protrusion 402 is provided at one end of the first connecting member 302 near the connecting shaft 301. The protrusion 402 is disposed in the groove 401, and the protrusion 402 and the groove 401 are interference-fitted.

[0064] The protrusion 402 of the first connector 302 is inserted into the groove 401, which facilitates the installation and fixation of the first connector 302 and the connecting shaft 301. For example, the protrusion 402 of the first connector 302 can be threaded into the groove 401, or it can be fixed by providing damping material at the contact point between the first connector 302 and the groove 401. In addition, the insertion of the protrusion 402 of the first connector 302 into the groove 401 on the connecting shaft 301 also facilitates the maintenance and replacement of the first connector 302. For example, when the first connector 302 needs to be replaced, it can be pulled out, causing the protrusion 402 to disengage from the groove 401, and then the protrusion 402 of the new first connector 302 can be inserted into the groove 401, thus facilitating the replacement of the first connector 302.

[0065] In some embodiments, a protrusion 402 is provided at the second end of the connecting shaft 301, and a groove 401 is provided at the end of the first connector 302 near the connecting shaft 301. The protrusion 402 is disposed in the groove 401, and the protrusion 402 and the groove 401 are interference-fitted.

[0066] It is understandable that the dimensions of the groove 401 and the protrusion 402 are set to correspond, so that the protrusion 402 can be inserted into the groove 401. The interference fit between the protrusion 402 and the groove 401 prevents them from easily separating, thus achieving a tight connection between the protrusion 402 and the groove 401. This ensures the normal operation of the lifting process of the working component 201 and avoids interruption of the lifting process due to the detachment of the component.

[0067] In some embodiments, the first connector 302 includes a magnetic body 461, which is connected to the side of the protrusion 402 adjacent to the second connector 303. The protrusion 402 may be in the form of a long strip extending in the vertical direction and is inserted into the groove 401.

[0068] In some embodiments, the first connector 302 is made of a magnetic material, such as a metallic magnetic material (e.g., magnetic stainless steel, nickel-based alloy), a non-metallic magnetic material (e.g., soft magnetic ferrite, AlNiCo alloy), or others. In this case, the second connector 303 can be a magnet, and the first connector 302 and the second connector 303 are magnetically connected. The magnetic connection between the first connector 302 and the second connector 303 utilizes the properties of the materials to achieve the connection. Compared to methods such as using fasteners, magnetic connection eliminates the need for other components, reducing the number of devices used and saving costs.

[0069] In some embodiments, a protrusion is provided at one end of the first connector 302 near the second connector 303, and a receiving groove is provided at one end of the second connector 303 near the first connector 302. The protrusion is disposed in the receiving groove, and the protrusion and the receiving groove are interference fit.

[0070] Alternatively, the first connector 302 may have a receiving groove at one end near the second connector 303, and the second connector 303 may have a protrusion at one end near the first connector 302. The protrusion is located in the receiving groove and is interference-fitted with the receiving groove.

[0071] It is understandable that the corresponding size of the receiving slot and the bump is set so that the bump can be inserted into the receiving slot. The interference fit between the bump and the receiving slot prevents the bump and the receiving slot from easily separating, achieving a tight connection between the bump and the receiving slot. This ensures the normal operation of the lifting process of the working component 201 and avoids interruption of the lifting process due to the device detaching.

[0072] In some embodiments, the drive assembly 203 includes a gearbox assembly comprising a plurality of gears. In this case, the first end of the connecting shaft 301 may pass through one of the gears, or the outer sidewall of the first end of the connecting shaft 301 may contact the gear. When the gear rotates, the connecting shaft 301 begins to rotate under the drive of the gear, and thus, under the drive of the connecting shaft 301, drives the first connecting member 302, the second connecting member 303, and the working assembly 201 to rotate.

[0073] In some embodiments, as shown in FIG6 and FIG7, the working component 201 includes a first housing 403, and the connecting component 202 further includes a first limiting member 304, a second limiting member 305, and a clearance member 306 located within the first housing 403.

[0074] The second end of the connecting shaft 301, the first connecting member 302, and the second connecting member 303 are disposed within the first limiting member 304. The first limiting member 304 is disposed within the yielding member 306, and the yielding member 306 is disposed within the second limiting member 305. The first limiting member 304 and the second limiting member 305 can fix and restrict the connecting assembly 202. The yielding member 306 can yield to the working assembly 201, for example, when the working assembly 201 encounters an obstacle or the ground it contacts is uneven, the yielding member 306 can yield to the working assembly 201, allowing the working assembly 201 to rise.

[0075] In some embodiments, the outer side wall of the second limiting member 305 is provided with a first threaded structure, and the inner side wall of the first housing 403 is provided with a second threaded structure, the second threaded structure being helically engaged with the first threaded structure. Frictional inertia can be generated between the first threaded structure and the second threaded structure, and this frictional inertia corresponds to the frictional inertia between the working component 201 and the connecting component 202.

[0076] It is worth noting that the first threaded structure engages with the second threaded structure. After the connecting component 202 starts to rotate, the working component 201 needs to wait for a period of time before it begins to rotate relative to the connecting component 202. Since the second threaded structure is located on the working component 201, the second threaded structure will also rotate with the working component 201. At this time, the frictional inertia between the working component 201 and the connecting component 202 is less than the self-weight inertia of the working component 201.

[0077] The working component 201 continues to rotate. When the frictional inertia between the working component 201 and the connecting component 202 is greater than or equal to the self-weight inertia of the working component 201, the working component 201 no longer rotates with the connecting component 202, that is, the second thread structure no longer rotates with the first thread structure.

[0078] In some embodiments, the first thread structure is an external thread and the second thread structure is an internal thread. Alternatively, the first thread structure is an internal thread and the second thread structure is an external thread.

[0079] In some embodiments, as shown in Figures 6 and 7, the second limiting member 305 includes a first component 404 and a second component 405 connected to each other. The cross-sectional area of ​​the first component 404 is larger than that of the second component 405, allowing the second component 405 to be placed inside the working assembly 201. The second limiting member 305 can be connected to the working assembly 201 via the first component 404, for example, by fasteners. In this case, the first component 404 has a first accommodating space, and the second component 405 has a second accommodating space. The first and second accommodating spaces have the same volume and are interconnected.

[0080] In some embodiments, as shown in Figures 6 and 7, a first limiting member 304 is disposed within a first component 404, and a clearance member 306 is disposed within a second component 405. Specifically, the first limiting member 304 is disposed within a first receiving space of the first component 404, and the clearance member 306 is disposed within a second receiving space of the second component 405.

[0081] In some embodiments, as shown in Figures 6 and 7, the outer side wall of the second component 405 is provided with a first protrusion 4051. The first protrusion 4051 is provided with a first threaded structure.

[0082] In some embodiments, the size and shape of the first accommodating space are configured to correspond to the shape and size of the first limiting member 304, so that when the first limiting member 304 can be placed in the first accommodating space, the first limiting member 304 is prevented from leaving the first accommodating space by matching the shape and other parameters of the first accommodating space with the first limiting member 304.

[0083] Similarly, the second accommodating space is set in correspondence with the clearance member 306 to prevent the clearance member 306 from leaving the second accommodating space and to ensure that the lifting and lowering process of the working component 201 can be carried out normally.

[0084] In some embodiments, as shown in Figures 6 and 7, the first housing 403 includes a first housing portion 4032 and a second housing portion 4033 connected by a connector 4031. The first housing portion 4032 is provided with a third accommodating space O1. The second end of the connecting shaft 301 in the connecting assembly 202, the first connector 302, and the second connector 303 can be disposed in the third accommodating space O1. A cleaning object (corresponding to cleaning component 56) such as a rag is installed on the side of the second housing portion 4033 away from the first housing portion 4032.

[0085] The third accommodating space O1 is provided with a second threaded structure. The second threaded structure can be helically engaged with the first threaded structure on the first protrusion 4051.

[0086] In some embodiments, as shown in Figures 6 and 7, the connecting assembly 202 further includes a first elastic member 307 and a base plate 308. One end of the first elastic member 307 is fixedly connected to the base plate 308, and a clearance member 306 passes through the other end of the first elastic member 307 and abuts against the base plate 308. The first elastic member 307 can be a spring, compression spring, elastic rubber sheet, or other types, and is not limited here.

[0087] In some embodiments, the second connector 303 is disposed on the base plate 308 on the side near the first elastic member 307, and the second connector 303 abuts against the base plate 308.

[0088] In some embodiments, as shown in FIG6, a second protrusion 406 is provided on the outer side wall of the clearance member 306. The clearance member 306 is disposed within the second component 405, and a portion of the first elastic member 307 is disposed between the clearance member 306 and the second component 405, with a portion of the first elastic member 307 contacting the second protrusion 406. At this time, the upper and lower sides of the first elastic member 307 are locked between the second protrusion 406 and the base plate 308 of the clearance member 306, and the side of the first elastic member 307 is locked between the clearance member 306 and the second component 405. When the ground is uneven or an obstacle is encountered, the working component 201 cannot maintain horizontal balance. At this time, the first elastic member 307 is compressed, and the first elastic member 307 can provide a reaction force to the clearance member 306, causing the clearance member 306 to move downward, that is, to move in the direction of the working component 201.

[0089] Based on the lifting device 10 shown in Figures 3 and 4, and referring to Figure 8, the lifting part 101 includes a connecting component 202, and the transmission part 102 includes a driving component 203. At this time, the working component 201 and the connecting component 202 can rotate relative to the driving component 203. The frictional inertia between the working component 201 and the connecting component 202 and the driving component 203 is less than the self-weight inertia of the working component 201 and the connecting component 202, causing the working component 201 and the connecting component 202 to form a differential motion with the driving component 203. Therefore, the working component 201 and the connecting component 202 can rotate upwards or downwards under the action of the differential motion.

[0090] Based on the lifting device 10 shown in Figure 8, the structural schematic diagram of the lifting device 10 can be seen in Figure 9, and the cross-sectional schematic diagram of the lifting device 10 can be seen in Figures 1-2 and 10.

[0091] Based on the lifting device 10 shown in Figures 1-2 and 9-10, the specific details are as follows:

[0092] In some embodiments, as shown in Figures 1-2 and 7-8, the connecting assembly 202 includes a connecting shaft 301, a first connector 302, and a second connector 303. The first end of the connecting shaft 301 is disposed within the driving assembly 203. The first connector 302 is connected to the second end of the connecting shaft 301. The second connector 303 abuts against the second end of the first connector 302 away from the connecting shaft 301. The first connector 302 and the second connector 303 are disposed within the working assembly 201.

[0093] In some embodiments, the connecting assembly 202 includes a connecting shaft 301 and a first connector 302, and the working assembly 201 is provided with a second connector 303 that attracts the first connector 302. The first end (i.e., the upper end) of the connecting shaft 301 is disposed within the driving assembly 203, the first connector 302 is connected to the second end (i.e., the lower end) of the connecting shaft 301, and the second connector 303 abuts against the second end of the first connector 302 away from the connecting shaft 301. The first connector 302 and the second connector 303 are disposed within the working assembly 201.

[0094] In some embodiments, the connecting shaft 301 is part of the drive assembly 203, and the connecting shaft 301 is press-fitted to the drive assembly 203.

[0095] In some embodiments, the connecting shaft 301 is connected to the first connecting member 302 via fasteners. The first connecting member 302 is connected to the second connecting member 303 via fasteners. The fasteners may be bolts, screws, studs, or others.

[0096] In some embodiments, as shown in Figures 1-2 and 7-8, a groove 401 is provided at the second end of the connecting shaft 301, and a protrusion 402 is provided at one end of the first connecting member 302 near the connecting shaft 301. The protrusion 402 is disposed in the groove 401, and the protrusion 402 and the groove 401 are interference-fitted.

[0097] Alternatively, the second end of the connecting shaft 301 is provided with a protrusion 402, and the end of the first connecting member 302 near the connecting shaft 301 is provided with a groove 401, the protrusion 402 is disposed in the groove 401, and the protrusion 402 and the groove 401 are interference fit.

[0098] It is understandable that the dimensions of the groove 401 and the protrusion 402 are set to correspond, so that the protrusion 402 can be inserted into the groove 401. The interference fit between the protrusion 402 and the groove 401 prevents them from easily separating, thus achieving a tight connection between the protrusion 402 and the groove 401. This ensures the normal operation of the lifting process of the working component 201 and avoids interruption of the lifting process due to the component detaching.

[0099] In some embodiments, the first connector 302 is made of a magnetic material, such as a metallic magnetic material (e.g., magnetic stainless steel, nickel-based alloy), a non-metallic magnetic material (e.g., soft magnetic ferrite, AlNiCo alloy), or others. In this case, the second connector 303 can be a magnet, and the first connector 302 and the second connector 303 are magnetically connected.

[0100] In some embodiments, a protrusion is provided at one end of the first connector 302 near the second connector 303, and a receiving groove is provided at one end of the second connector 303 near the first connector 302. The protrusion is disposed in the receiving groove, and the protrusion and the receiving groove are interference fit.

[0101] Alternatively, the first connector 302 may have a receiving groove at one end near the second connector 303, and the second connector 303 may have a protrusion at one end near the first connector 302. The protrusion is located in the receiving groove and is interference-fitted with the receiving groove.

[0102] It is understandable that the corresponding size of the receiving slot and the bump is set so that the bump can be inserted into the receiving slot. The interference fit between the bump and the receiving slot prevents the bump from easily disengaging from the receiving slot, thus achieving a tight connection between the bump and the receiving slot. This ensures the normal operation of the lifting process of the working component 201 and avoids interruption of the lifting process due to the disengagement of the component.

[0103] In some embodiments, the drive assembly 203 includes a gearbox assembly comprising a plurality of gears. In this case, the first end of the connecting shaft 301 may pass through one of the gears, or the outer sidewall of the first end of the connecting shaft 301 may contact the gear. When the gear rotates, the connecting shaft 301 begins to rotate under the drive of the gear, and thus, under the drive of the connecting shaft 301, drives the first connecting member 302, the second connecting member 303, and the working assembly 201 to rotate.

[0104] In some embodiments, the working assembly 201 is provided with a mounting groove 52, and the second connector 303 is located in the mounting groove 52. By providing a mounting groove 52 in the working assembly 201 to accommodate the second connector 303, the installation and fixation of the second connector 303 is facilitated, and the second connector 303 can also be limited, reducing the risk of the second connector 303 falling off the working assembly 201.

[0105] The second connector 303 can be fixed by snapping into the mounting groove 52 or by adhesive or other means.

[0106] In some embodiments, a fixing bracket 54 is provided in the mounting slot 52, and the fixing bracket 54 is connected to the working component 201. The second connector 303 is installed in the fixing bracket 54. The second connector 303 is installed in the mounting slot 52 through the fixing bracket 54, which can increase the firmness of the installation of the second connector 303.

[0107] For example, the working component 201 includes a mounting plate 51 and a cleaning component 56. The cleaning component 56 is in the form of a sheet, and the cleaning components 56 are stacked on the bottom surface of the mounting plate 51. For example, the cleaning component 56 can be fixed to the bottom surface of the mounting plate 51 with adhesive. The mounting plate 51 has the aforementioned mounting groove 52 in the middle. The upper side of the mounting groove 52 is open, and the fixing bracket 54 can be connected to the mounting plate 51. Furthermore, the lower side of the mounting groove 52 can also be open to form a mounting opening 521 on the lower side of the mounting groove 52. A protective cover 53 can be provided at the mounting opening 521 to prevent dirt, dust, and other debris from entering the mounting groove 52 through the mounting opening 521. A clearance opening can be formed on the cleaning component 56 at the position corresponding to the mounting opening 521.

[0108] In some embodiments, as shown in Figures 1-2 and 7-8, the connecting assembly 202 further includes a third limiting member 309, and the driving assembly 203 further includes a second housing 407 and a fourth limiting member 408. The third limiting member 309 and the fourth limiting member 408 are disposed within the second housing 407, and the first end of the connecting shaft 301 is disposed between the third limiting member 309 and the fourth limiting member 408.

[0109] In some embodiments, the outer side wall of the third limiting member 309 is provided with a third threaded structure 4311, and the inner side wall of the second housing 407 of the drive assembly 203 is provided with a fourth threaded structure 341. The fourth threaded structure 341 and the third threaded structure 4311 are screwed together. Frictional inertia can be generated between the third threaded structure 4311 and the fourth threaded structure 341. At this time, the frictional inertia corresponds to the frictional inertia between the working assembly 201 and the connecting assembly 202 and the drive assembly 203.

[0110] It is worth noting that the third threaded structure 4311 meshes with the fourth threaded structure 341. After the drive assembly 203 starts to rotate, the working assembly 201 and the connecting assembly 202 need to wait for a certain period of time before they begin to rotate relative to the drive assembly 203. Since the third threaded structure 4311 is located on the connecting assembly 202, it will also rotate with the drive assembly 203. At this time, the frictional inertia between the working assembly 201 and the connecting assembly 202 and the drive assembly 203 is less than the self-weight inertia of the working assembly 201 and the connecting assembly 202.

[0111] The working component 201 and the connecting component 202 continue to rotate. When the frictional inertia between the working component 201 and the connecting component 202 and the driving component 203 is greater than or equal to the self-weight inertia of the working component 201 and the connecting component 202, the working component 201 and the connecting component 202 no longer follow the driving component 203 to rotate. That is, the third thread structure 4311 no longer follows the fourth thread structure 341 to rotate.

[0112] In some embodiments, the third thread structure 4311 is an external thread and the fourth thread structure 341 is an internal thread. Alternatively, the third thread structure 4311 is an internal thread and the fourth thread structure 341 is an external thread.

[0113] In some embodiments, as shown in Figures 1-2 and 7-8, a transverse protrusion is provided at the first end of the connecting shaft 301, and the second end of the connecting shaft 301 passes through the fourth limiting member 408, so that the side of the transverse protrusion near the second end of the connecting shaft 301 contacts the fourth limiting member 408. Thus, with the cooperation of the fourth limiting member 408 and the transverse protrusion, the first end of the connecting shaft 301 can be restricted within the driving assembly 203, preventing the connecting shaft 301 from detaching from the driving assembly 203.

[0114] Additionally, the third limiting member 309 is inserted into and contacts the second end of the transverse protrusion away from the connecting shaft 301. This allows the position of the third limiting member 309 to be restricted through the cooperation between the third limiting member 309 and the transverse protrusion, ensuring that the third threaded structure 4311 on the third limiting member 309 is threadedly engaged with the fourth threaded structure 341 on the inner wall of the second housing 407.

[0115] According to some embodiments of this application, the connecting component 202 and the working component 201 are connected and fixed by magnetic attraction. This magnetic connection makes it easier to separate or connect the working component 201 and the connecting component 202 without needing to plug or unplug, simplifying the connection method between them. Furthermore, the magnetic attraction reduces wear and tear caused by plugging and unplugging between the working component 201 and the connecting component 202.

[0116] For example, when the working component 201 needs to be automatically detached, the driving component 203 can drive the connecting component 202 to move upwards towards the first position. The limiting structure 211 then blocks the upward movement of the working component 201. At this time, the magnetic attraction between the connecting component 202 and the working component 201 gradually weakens. When the magnetic attraction between the connecting component 202 and the working component 201 is less than the weight of the working component 201, the working component 201 automatically detaches from the machine body 21. When the working component 201 needs to be installed onto the connecting component 202, the driving component 203 can drive the connecting component 202 to descend to the second position or below, bringing the working component 201 close to the lower end of the connecting component 202. Under the action of the magnetic attraction, the working component 201 automatically adheres and is fixed to the lower end of the connecting component 202.

[0117] According to some embodiments of this application, the lower end of the connecting assembly 202 is provided with a first connector 302, and the working assembly 201 is provided with a second connector 303 that attracts the first connector 302. For example, when the connecting assembly 202 includes a connecting shaft 301, the first connector 302 is disposed at the lower end of the connecting shaft 301.

[0118] At least one of the first connector 302 and the second connector 303 possesses magnetic attraction. For example, both the first connector 302 and the second connector 303 can possess magnetic attraction, and both can be permanent magnets. For example, the first connector 302 can possess magnetic attraction, and can be a permanent magnet, while the second connector 303 can be made of a metal material such as iron, cobalt, or nickel that can be attracted by magnetic materials. For example, the second connector 303 can possess magnetic attraction, and can be a permanent magnet, while the first connector 302 can be made of a metal material such as iron, cobalt, or nickel that can be attracted by magnetic materials. For example, the first connector 302 can be an electromagnet, and the second connector 303 can be a permanent magnet or made of a metal material such as iron, cobalt, or nickel that can be attracted by magnetic materials.

[0119] The first connector 302 and the second connector 303 are connected and fixed by magnetic attraction, thereby connecting the connecting component 202 and the working component 201. When the first connector 302 and the second connector 303 are separated, the working component 201 and the connecting component 202 can be separated.

[0120] For example, when the working component 201 needs to be automatically detached, the drive component 203 can drive the connecting component 202 to move upwards and toward the first position. The limiting structure 211 blocks the upward movement of the working component 201. At this time, the first connecting member 302 and the second connecting member 303 separate from each other, and the mutual attraction between them gradually weakens. When the magnetic attraction between the first connecting member 302 and the second connecting member 303 is less than the weight of the working component 201 itself, the working component 201 separates from the connecting component 202, allowing the working component 201 to automatically detach from the machine body 21. When the working component 201 needs to be installed onto the connecting component 202, the drive component 203 can drive the connecting component 202 to descend to the second position or below. The working component 201 can be installed onto the lower end of the connecting component 202 by the mutual attraction between the first connecting member 302 and the second connecting member 303.

[0121] According to some embodiments of this application, at least one of the first connector 302 and the second connector 303 is detachable.

[0122] The detachability of at least one of the first connector 302 and the second connector 303 can include the following situations: the first connector 302 can be detached, the second connector 303 can be detached, or both the first connector 302 and the second connector 303 can be detached. When the first connector 302 is a magnetic material and the second connector 303 is a metal material that can be magnetically attracted by the first connector 302, the first connector 302 can be detached or both the first connector 302 and the second connector 303 can be detached. When the second connector 303 is a magnetic material and the first connector 302 is a metal material that can be magnetically attracted by the second connector 303, the second connector 303 can be detached or both the first connector 302 and the second connector 303 can be detached. When both the first connector 302 and the second connector 303 are magnetic materials, both the first connector 302 and the second connector 303 can be detached. When the first connector 302 or the second connector 303 is worn or loses its magnetism, it can be replaced in a detachable manner, thereby extending the service life of the cleaning device 20.

[0123] This application also provides a cleaning system, which includes a cleaning device 20 and a cleaning base station according to any of the above embodiments. The cleaning device 20 is adapted to cooperate with the cleaning base station, which is used to clean and / or charge the cleaning device 20.

[0124] For example, when the working component 201 needs cleaning, the cleaning device 20 can automatically move to the cleaning base station, where the cleaning base station can clean the working component 201 of the cleaning device 20. After cleaning, the cleaning device 20 can automatically leave the cleaning base station.

[0125] For example, when the cleaning device 20 needs to be charged, the cleaning device 20 can automatically move to the cleaning base station, the cleaning base station can charge the cleaning device 20, and after charging is completed, the cleaning device 20 can automatically leave the cleaning base station.

[0126] According to the cleaning system of the present invention, by setting the cleaning device 20 described above, the cleaning device 20 can realize automatic lifting and automatic disassembly of the working component 201, and can simplify the drive structure of the automatic lifting and automatic disassembly function of the working component 201, thereby reducing costs; by setting a cleaning base station, when the cleaning work of the cleaning device 20 is completed, the cleaning device 20 can be cleaned and / or charged through the cleaning base station.

[0127] According to some embodiments of this application, the connecting component 202 is rotatable, and the axis of rotation of the connecting component 202 extends in the vertical direction.

[0128] When the lifting part 101 includes a connecting assembly 202 and the transmission part 102 includes a driving assembly 203, the driving assembly 203 further includes a second housing 407. The second housing 407 has a receiving cavity 32, and a guide 33 is provided in the receiving cavity 32. At least a portion of the connecting assembly 202 is located in the receiving cavity 32. For example, the main body of the connecting assembly 202 is located in the receiving cavity 32, and the lower end of the connecting assembly 202 can extend downward to the outside of the receiving cavity 32. The guide 33 is threadedly engaged with the connecting assembly 202, which can convert the rotational movement of the connecting assembly 202 into vertical movement.

[0129] The cavity 32 of this application serves to accommodate the guide 33 and protect the internal components.

[0130] The connecting component 202 is rotatable to engage with a threaded connection for rotation. The guide 33 engages with the connecting component 202 threadedly, converting the rotation of the connecting component 202 into vertical movement. When the driving component 203 drives the connecting component 202 to rotate, because the connecting component 202 is threadedly connected to the guide 33 within the second housing 407, the connecting component 202 moves vertically simultaneously with its rotation. Through the threaded engagement of the guide 33 with the connecting component 202, rotational motion can be converted into vertical motion, facilitating the vertical movement of the connecting component 202.

[0131] For example, when the drive assembly 203 drives the connecting assembly 202 to rotate forward, the threaded engagement between the connecting assembly 202 and the guide 33 allows the connecting assembly 202 to move downwards while rotating forward. When the drive assembly 203 drives the connecting assembly 202 to rotate in reverse, the threaded engagement between the connecting assembly 202 and the guide 33 allows the connecting assembly 202 to move upwards while rotating in reverse. Specifically, when the connecting assembly 202 is in the third position, it can rotate forward to drive the working assembly 201 to rotate forward, thereby cleaning the working surface.

[0132] According to some embodiments of this application, the guide member 33 is provided with a guide channel 34 extending in the vertical direction, the connecting component 202 passes through the guide channel 34, the inner peripheral wall of the guide channel 34 is provided with a fourth thread structure 341, the outer peripheral wall of the connecting component 202 is provided with a third thread structure 4311, and the third thread structure 4311 engages with the fourth thread structure 341.

[0133] The guide channel 34 serves to accommodate the guide connecting assembly 202 and provides space for its vertical movement. The third threaded structure 4311 on the outer peripheral wall of the connecting assembly 202 engages with the fourth threaded structure 341 on the inner peripheral wall of the guide channel 34, thereby converting the rotational motion of the connecting assembly 202 into vertical motion. For example, when the connecting assembly 202 rotates, the third threaded structure 4311 on its outer peripheral wall engages with the fourth threaded structure 341 on the guide member 33, and under the guidance of the fourth threaded structure 341 on the guide member 33, the connecting assembly 202 can move upward or downward while rotating.

[0134] According to some embodiments of this application, the connecting assembly 202 includes a mating structure 42, and the connecting shaft 301 extends in the vertical direction. The mating structure 42 includes a mating member 43 and a transmission structure. The mating member 43 is sleeved on the outer periphery of the connecting shaft 301, and the transmission structure is disposed between the mating member 43 and the connecting shaft 301. The outer periphery of the mating member 43 is provided with a third thread structure 4311. The working assembly 201 is detachably connected to the lower end of the connecting shaft 301, and the driving assembly 203 is drively connected to the connecting shaft 301. The driving assembly 203 can drive the connecting shaft 301 to rotate. Since a transmission structure is provided between the connecting shaft 301 and the mating member 43, the transmission structure is configured to transmit the rotational power of the connecting shaft 301 to the mating member 43 to drive the mating member 43 to rotate. Since the mating member 43 is threadedly connected to the guide member 33, the guide member 33 can guide the mating member 43 to move in the vertical direction while the mating member 43 rotates.

[0135] The connecting component 202 has a first position, a second position, and a third position arranged sequentially from top to bottom. The connecting component 202 is configured to drive the working component 201 to move up and down during the movement between the second position and the third position, and to block the upward movement of the working component 201 by the limiting structure 211 during the upward movement from the second position to the first position, so as to separate the working component 201 from the connecting component 202.

[0136] For example, when the connecting component 202 is in the third position, the working component 201 contacts the working surface, enabling cleaning of the working surface; as the lifting part moves upward from the third position to the second position, the working component 201 gradually moves upward; when the lifting part is in the second position, the working component 201 disengages from the working surface; as the lifting part moves upward from the second position to the first position, the limiting structure 211 blocks the upward movement of the working component 201, causing the working component 201 to separate from the connecting component 202; when the connecting component 202 is in the first position, the working component 201 is completely separated from the connecting component 202.

[0137] When the working component 201 needs to be automatically detached, the drive component 203 drives the connecting component 202 to move upward to the first position. During this process, when the working component 201 contacts the limiting structure 211, the working component 201 can no longer move upward with the connecting component 202, while the connecting component 202 continues to move upward. The working component 201 and the connecting component 202 gradually separate until the connecting component 202 moves upward to the first position, at which point the working component 201 falls off the machine body 21.

[0138] The transmission structure is configured to transmit the rotational power of the connecting shaft 301 to the mating member 43, thereby driving the mating member 43 to rotate. During the process of the connecting assembly 202 moving downward from the first position to the second position, or moving downward from the second position to the third position, or moving upward from the third position to the second position, or moving upward from the second position to the first position, the transmission structure can transmit the rotational power of the connecting shaft 301 to the mating member 43, thereby causing the mating member 43 to rotate. Through the threaded connection between the mating member 43 and the guide member 33, the mating member 43 can move upward or downward while rotating.

[0139] When the connecting assembly 202 is in the third position, the power transmission between the connecting shaft 301 and the mating part 43 is disconnected. The transmission structure cannot transmit the rotational power of the connecting shaft 301 to the connecting shaft 301. As a result, when the connecting assembly 202 is in the third position, the mating part 43 is stationary, and the connecting shaft 301 can rotate relative to the mating part 43 without continuing to move in the up and down direction. Thus, when the connecting assembly 202 is in the third position, the working surface is cleaned by the rotation of the working assembly 201.

[0140] For example, when the connecting component 202 is in the third position, the working component 201 is in contact with the working surface, and the power transmission between the connecting shaft 301 and the mating part 43 is disconnected, allowing the connecting shaft 301 to rotate relative to the mating part 43, thus cleaning the working surface. When the connecting component 202 moves from the third position to the second position, it drives the working component 201 to move upward. When the connecting component 202 moves from the second position to the third position, it drives the working component 201 to move downward. When the connecting component 202 is in the second position, the working component 201 is disengaged from the working surface. When the connecting component 202 moves from the second position to the first position, the limiting structure 211 blocks the upward movement of the working component 201, causing the working component 201 to separate from the connecting component 202. When the connecting component 202 is in the first position, the working component 201 is completely separated from the connecting component 202. When the connecting component 202 moves from the first position to the second position, the lifting part moves downward. When it reaches the second position, the working component 201 can be installed at the lower end of the lifting part.

[0141] According to some embodiments of this application, the lifting device 10 includes a first transmission gear 36 and a second transmission gear 37 that mesh with each other. The first transmission gear 36 is located in the receiving cavity 32 and sleeved on the outer periphery of the connecting shaft 301. The first transmission gear 36 is fixed relative to the connecting shaft 301. The first transmission gear 36 and the mating member 43 are arranged at intervals along the axial direction of the connecting shaft 301. For example, the first transmission gear 36 is located on the lower side of the mating member 43. The second transmission gear 37 is connected to the driving assembly 203. The second transmission gear 37 can be located in the receiving cavity 32, and the driving assembly 203 can be located outside the receiving cavity 32.

[0142] In this configuration, the first transmission gear 36 and the second transmission gear 37 mesh with each other. When the drive assembly 203 drives the second transmission gear 37 to rotate, it can drive the first transmission gear 36 to rotate. The first gear is fixed relative to the connecting shaft 301, thereby driving the connecting shaft 301 to rotate. Since the first gear is fixed relative to the connecting shaft 301, the first transmission gear 36 and the connecting shaft 301 move synchronously. The first transmission gear 36 and the connecting shaft 301 rotate synchronously, or the first transmission gear 36 and the connecting shaft 301 rotate synchronously while simultaneously moving synchronously in the up-down direction.

[0143] It is understandable that when the connecting shaft 301 rotates and moves in the vertical direction, the first transmission gear 36 also rotates and moves in the vertical direction. The second transmission gear 37 meshes with the first transmission gear 36. The length of the transmission teeth of the second transmission gear 37 in the vertical direction can be determined according to the stroke of the first transmission gear 36 in the vertical direction, so that the first transmission gear 36 can maintain a meshing relationship with the second transmission gear 37 during the vertical movement.

[0144] According to some embodiments of this application, the transmission structure includes a first transmission structure 441 and a second transmission structure 442 arranged axially spaced along the mating member 43. For example, the second transmission structure 442 may be disposed below the first transmission structure 441. The first transmission structure 441 is configured to transmit the power of rotation of the connecting shaft 301 in a first direction to the mating member 43, so as to drive the mating member 43 to rotate and move downward in the first direction. The second transmission structure 442 is configured to transmit the power of rotation of the connecting shaft 301 in a second direction to the mating member 43, so as to drive the mating member 43 to rotate and move upward in the second direction, which is opposite to the first direction. The lower end of the fourth threaded structure 341 has a threaded locking structure 342. When the connecting assembly 202 is in the third position, the threaded locking structure 342 engages with the fourth threaded structure 341 to restrict the rotation of the mating member 43 in the first direction.

[0145] The first direction mentioned above can be clockwise, and the second direction can be counterclockwise.

[0146] When the drive assembly 203 drives the connecting shaft 301 to rotate in the first direction, the first transmission structure 441 is configured to transmit the power of the connecting shaft 301 rotating in the first direction to the mating member 43, so as to drive the mating member 43 to rotate in the first direction and move downward; when the drive assembly 203 drives the connecting shaft 301 to rotate in the second direction, the second transmission structure 442 is configured to transmit the power of the connecting shaft 301 rotating in the second direction to the mating member 43, so as to drive the mating member 43 to rotate in the second direction and move upward.

[0147] For example, when the connecting assembly 202 needs to move downward, the driving assembly 203 drives the connecting shaft 301 to rotate in the first direction. The first transmission structure 441 is configured to transmit the power of the connecting shaft 301 rotating in the first direction to the mating part 43, thereby driving the mating part 43 to rotate in the first direction and move downward, so that the connecting assembly 202 can rotate in the first direction and move downward at the same time. When the connecting assembly 202 moves downward to the third position, the threaded locking structure 342 at the lower end of the fourth threaded structure 341 engages with the third threaded structure 4311. The threaded locking structure 342 restricts the mating part 43 from rotating in the first direction. At this time, the lifting part no longer moves downward, the power transmission path between the connecting shaft 301 and the mating part 43 is broken, the mating part 43 does not move, and the connecting shaft 301 rotates relative to the mating part 43. The rotation of the connecting shaft 301 drives the working assembly 201 to perform cleaning work.

[0148] For example, when it is necessary to drive the connecting assembly 202 to move upward, the driving assembly 203 drives the connecting shaft 301 to rotate in the second direction. The second transmission structure 442 is configured to transmit the power of the connecting shaft 301 rotating in the second direction to the mating member 43, thereby driving the mating member 43 to rotate in the second direction and move upward, so that the connecting assembly 202 can rotate in the second direction and move upward at the same time.

[0149] According to some embodiments of this application, the first transmission structure 441 is a damping structure, and the second transmission structure 442 is a one-way bearing sleeved on the outer periphery of the connecting shaft 301. The second transmission structure 442 is connected to the mating part 43 and fixed relative to the mating part 43.

[0150] The damping structure transmits the power of rotation of the connecting shaft 301 in the first direction to the mating part 43 through meshing or friction. By using direct meshing or friction, the damping function can be achieved without additional complex mechanical devices, which helps to simplify the design, reduce costs, and reduce potential failure points.

[0151] A one-way bearing is a type of bearing that can rotate freely in one direction and is locked in another. For example, when the one-way bearing is designed to rotate freely in the first direction and be locked in the second direction, when the connecting shaft 301 rotates in the first direction, the one-way bearing does not restrict the connecting shaft 301 in the first direction and does not transmit power; when the connecting shaft 301 rotates in the second direction, the one-way bearing restricts the connecting shaft 301 in the second direction. At this time, the one-way bearing is tightly attached to the connecting shaft 301, and the connecting shaft 301 can drive the one-way bearing to rotate, thereby driving the mating part 43 to rotate.

[0152] For example, when it is necessary to drive the connecting assembly 202 to move downward, the driving assembly 203 drives the connecting shaft 301 to rotate in the first direction. The second transmission structure 442 does not restrict the connecting shaft 301 in the first direction. The first transmission structure 441 transmits the rotational power of the connecting shaft 301 to the mating part 43 through meshing or friction, thereby driving the mating part 43 to rotate in the first direction and move downward, so that the connecting assembly 202 can rotate in the first direction and move downward at the same time. When the connecting assembly 202 moves downward to the third position, the threaded locking structure 342 at the lower end of the fourth threaded structure 341 engages with the third threaded structure 4311. The threaded locking structure 342 restricts the mating part 43 from rotating in the first direction. The restricting force of the threaded locking structure 342 on the mating part 43 in the first direction is greater than the frictional force or meshing force of the first transmission structure 441 on the mating part 43. At this time, the lifting part no longer moves downward, the power transmission path between the connecting shaft 301 and the mating part 43 is disconnected, the mating part 43 remains stationary, and the connecting shaft 301 rotates relative to the mating part 43. The rotation of the connecting shaft 301 drives the working assembly 201 to perform cleaning work.

[0153] For example, when it is necessary to drive the connecting assembly 202 to move upward, the driving assembly 203 drives the connecting shaft 301 to rotate in the second direction. The second transmission structure 442 has a restrictive effect on the connecting shaft 301 in the second direction. At this time, the second transmission structure 442 is tightly held on the connecting shaft 301. The connecting shaft 301 can drive the mating part 43 to rotate through the second transmission structure 442, thereby driving the mating part 43 to rotate in the second direction and move upward, so that the connecting assembly 202 can rotate in the second direction and move upward at the same time.

[0154] According to some embodiments of this application, the damping structure includes a damping ring, which is sleeved on the outer periphery of the connecting shaft 301 and fixed relative to the connecting shaft 301. The damping ring is a flexible or elastic element, and the damping ring meshes with the mating element 43 or is mated by friction.

[0155] The damping ring can be made of elastic materials with high friction, such as rubber, plastic, or fiber, or other flexible materials that can mesh with the mating part 43. The damping ring drives the mating part 43 to rotate through meshing or friction.

[0156] According to some embodiments of this application, the mating part 43 includes an external threaded portion 431 and a damping portion 432. The external threaded portion 431 is sleeved on the outer peripheral side of the connecting shaft 301 and the outer peripheral wall of the external threaded portion 431 is provided with a third thread structure 4311. The damping portion 432 is connected to the inner peripheral wall of the external threaded portion 431. The damping ring and the second transmission structure 442 are located on both sides of the damping portion 432 along the axial direction of the connecting shaft 301. For example, the damping ring is disposed on the upper side of the damping portion 432 and the second transmission structure 442 is disposed on the lower side of the damping portion 432. The damping portion 432 meshes with the damping ring or is mated by friction.

[0157] The damping part 432 can be made of elastic materials with high friction, such as rubber, plastic, or fiber, or other flexible materials that can engage with the mating part 43. The damping part 432 can drive the mating part 43 to rotate through engagement with the damping ring or friction. When the connecting shaft 301 rotates in the first direction, the mating part 43 rotates through engagement between the damping ring and the damping part 432.

[0158] According to some embodiments of this application, the connecting assembly 202 further includes a clamping structure 45, which is sleeved on the outer periphery of the connecting shaft 301 and located on one axial side of the mating structure 42, for example, the clamping structure 45 is disposed on the lower side of the mating structure 42. The second transmission structure 442 and the damping part 432 abut against each other in the axial direction of the connecting shaft 301, and the clamping structure 45 abuts against the second transmission structure 442 in the axial direction of the connecting shaft 301. By using the clamping structure 45, the clamping structure 45 abuts against the second transmission structure 442 in the direction of the connecting shaft 301, and the second transmission structure 442 abuts against the damping part 432 in the axial direction of the connecting shaft 301. This allows the damping part 432 to be in close contact with the damping sleeve 443 provided on the connecting shaft 301, resulting in a large frictional force between the damping sleeve 443 and the damping part 432. Consequently, there is a large frictional force between the connecting shaft 301 and the mating part 43. Therefore, when the connecting shaft 301 rotates in the first direction, the mating part 43 can be driven to rotate by the frictional force between the connecting shaft 301 and the mating part 43.

[0159] For example, at least a portion of the clamping structure 45 may be an elastic structure, such that the clamping structure 45 presses the damping portion 432 onto the damping sleeve 443 in the axial direction of the connecting shaft 301, thereby increasing the friction between the damping structure and the damping ring by increasing the pressure.

[0160] According to some embodiments of this application, the clamping structure 45 includes a clamping block 451 and a clamping spring 452. Both the clamping block 451 and the clamping spring 452 are sleeved on the outer periphery of the connecting shaft 301, and the clamping block 451 and the clamping spring 452 are arranged along the axial direction of the connecting shaft 301. For example, the clamping block 451 can be disposed on the upper side of the clamping spring 452. The clamping block 451 abuts against the second transmission structure 442 in the axial direction of the connecting shaft 301, one end of the clamping spring 452 abuts against or connects to the clamping block 451 in the axial direction of the connecting shaft 301, and the other end of the clamping spring 452 abuts against or connects to the connecting shaft 301.

[0161] The clamping block 451 can be loosely fitted around the outer periphery of the connecting shaft 301, and the clamping spring 452 can be in a compressed state. In this way, the clamping spring 452 can apply an axial force along the connecting shaft 301 to the clamping block 451. For example, the clamping spring 452 can apply an upward force to the clamping block 451, so that the clamping block 451 presses upward against the damping part 432, thereby applying an upward force to the damping part 432, so that the damping part 432 and the damping sleeve 443 are in close contact. Since the clamping spring 452 has elastic deformation capability in the axial direction of the connecting shaft 301, it can better make the damping part 432 and the damping sleeve 443 in close contact, thereby making the damping part 432 and the damping sleeve 443 have a large friction force, so as to drive the mating part 43 to rotate in the first direction when the connecting shaft 301 rotates in the first direction.

[0162] According to some embodiments of this application, the lifting device 10 includes a first transmission gear 36 and a second transmission gear 37 that mesh with each other. The first transmission gear 36 is located in the receiving cavity 32 and is sleeved on the outer periphery of the connecting shaft 301. The first transmission gear 36 is fixed relative to the connecting shaft 301. The first transmission gear 36 and the mating part 43 are arranged at intervals along the axial direction of the connecting shaft 301. The second transmission gear 37 is connected to the drive assembly 203.

[0163] The second transmission gear 37 is connected to the drive assembly 203, and the first transmission gear 36 meshes with the second transmission gear 37. When the drive assembly 203 drives the second transmission gear 37 to rotate, the second transmission gear 37 drives the first transmission gear 36 to rotate. Since the first transmission gear 36 is fixed relative to the connecting shaft 301, the first transmission gear 36 drives the connecting shaft 301 to rotate synchronously. The first transmission gear 36 and the connecting shaft 301 rotate synchronously, or the first transmission gear 36 and the connecting shaft 301 rotate synchronously and move synchronously in the up and down direction.

[0164] It is understandable that when the connecting shaft 301 rotates and moves in the vertical direction, the first transmission gear 36 also rotates and moves in the vertical direction. The second transmission gear 37 meshes with the first transmission gear 36. The length of the transmission teeth of the second transmission gear 37 in the vertical direction can be determined according to the stroke of the first transmission gear 36 in the vertical direction, so that the first transmission gear 36 can maintain a meshing relationship with the second transmission gear 37 during the vertical movement.

[0165] The other end of the compression spring 452 abuts against or connects to the first transmission gear 36 in the axial direction of the connecting shaft 301. By using the first transmission gear 36 sleeved on the connecting shaft 301 to fix or limit the other end of the compression spring 452, the structure for limiting the other end of the compression spring 452 on the connecting shaft 301 can be eliminated, thus simplifying the structure of the connecting assembly 202.

[0166] According to some embodiments of this application, the guide 33 and the second housing 407 are integrally formed. For example, the guide 33 and the second housing 407 can be integrally injection molded. By integrally forming the guide 33 and the second housing 407, the assembly process between the guide 33 and the second housing 407 can be eliminated.

[0167] In some embodiments, as shown in Figures 1-2 and 7-8, the working component 201 includes a third housing 409, and the connecting component 202 further includes a fifth limiting member 310, a sixth limiting member 311, and a second elastic member 312 located in the third housing 409. The second end of the connecting shaft 301, the first connecting member 302, and the second connecting member 303 are disposed within the fifth limiting member 310, which is disposed within the sixth limiting member 311. The second elastic member 312 is disposed between the sixth limiting member 311 and the third housing 409. The second elastic member 312 can be a spring, compression spring, elastic rubber sheet, or other types, and is not limited here. The sixth limiting member 311 functions similarly to the yielding member 306; when the working component 201 encounters an obstacle or the ground it contacts is uneven, the sixth limiting member 311 can yield to the working component 201, allowing the working component 201 to rise.

[0168] In some embodiments, as shown in Figures 1-2 and 7-8, the third housing 409 is provided with a mounting groove 52. The third housing 409 includes a first housing portion 4032 and a second housing portion 4033 connected by a connector 4031. The first housing portion 4032 is provided with a fourth accommodating space O2 (corresponding to the mounting groove 52 mentioned above). The second end of the connecting shaft 301 in the connecting assembly 202, the first connector 302, and the second connector 303 can be disposed in the fourth accommodating space O2. A cleaning object such as a rag is installed on the side of the second housing portion 4033 away from the first housing portion 4032.

[0169] In some embodiments, as shown in Figures 1-2 and 7-8, the outer wall of the third limiting member 309 is provided with a third protrusion 410, and the third protrusion 410 is provided with a third thread structure 4311.

[0170] In some embodiments, as shown in Figures 1-2 and 7-8, the second housing 407 includes a fifth accommodating space O3, and a fourth threaded structure 341 is provided on the inner sidewall of the fifth accommodating space O3. The fourth threaded structure 341 can be helically engaged with the third threaded structure 4311 on the third protrusion 410.

[0171] According to some embodiments of this application, a fifth limiting member 310 is sleeved on the lower end of the connecting assembly 202. The fifth limiting member 310 is located on the outer periphery of the first connecting member 302 and is fixed relative to the connecting assembly 202. For example, the fifth limiting member 310 is sleeved on the outer periphery of the connecting shaft 301 and is fixed relative to the connecting shaft 301. The fifth limiting member 310 has a guide portion 471, and the fixing bracket 54 is provided with a guide groove 541. The guide portion 471 is inserted into or disengaged from the guide groove 541 in the vertical direction.

[0172] For example, when the connecting assembly 202 is connected to the working assembly 201, the guide portion 471 of the fifth limiting member 310 inserts into the guide groove 541 of the fixed bracket 54 in the vertical direction; when the connecting assembly 202 is separated from the working assembly 201, the guide portion 471 of the fifth limiting member 310 disengages from the guide groove 541 of the fixed bracket 54 in the vertical direction. By setting the cooperation between the guide portion 471 of the fifth limiting member 310 and the guide groove 541 of the fixed bracket 54, a guiding function can be provided when the working assembly 201 is installed onto the connecting assembly 202 or during the process of the working assembly 201 gradually separating from the connecting assembly 202.

[0173] For example, when it is necessary to automatically detach the working component 201, the driving component 203 can drive the connecting component 202 to move upward and toward the first position. At this time, the limiting structure 211 blocks the upward movement of the working component 201. The first connecting member 302 and the second connecting member 303 separate from each other. The guide part 471 moves upward relative to the guide groove 541 and gradually separates from the guide groove 541. The mutual attraction between the first connecting member 302 and the second connecting member 303 gradually weakens. When the magnetic attraction between the first connecting member 302 and the second connecting member 303 is less than the weight of the working component 201 itself, the working component 201 separates from the connecting component 202, so that the working component 201 can automatically fall off the machine body 21. When it is necessary to install the working component 201 onto the connecting component 202, the driving component 203 can drive the connecting component 202 to descend to the second position or below the second position. The working component 201 can be installed onto the lower end of the connecting component 202 by mutual attraction between the first connecting member 302 and the second connecting member 303. During this process, by pushing the working component 201 upward or by lowering the connecting component 202, the guide part 471 is gradually inserted into the guide groove 541 until it is installed in place.

[0174] In some embodiments, the cleaning device 20 further includes a memory and a processor, wherein the memory is used to store a computer program and the processor is used to execute the computer program. The processor involved in this application may be referred to as a CPU (Central Processing Unit), which may be an integrated circuit chip, or a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component.

[0175] In some embodiments, the cleaning device 20 may also include other components, such as a charging station.

[0176] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A lifting device, wherein the lifting device is connected to a working assembly, wherein, The lifting device includes: Driver components; A connection component, wherein the driving component is connected to the connection component; The lifting device has a lifting part and a transmission part. The lifting part rotates relative to the transmission part to drive the working component to rise and fall relative to the working surface.

2. The lifting device according to claim 1, wherein, The frictional inertia between the transmission unit and the working component is less than the self-weight inertia of the working component, so that the transmission unit and the working component form a differential motion; Alternatively, the frictional inertia between the lifting part and the working component and the transmission part is less than the self-weight inertia of the lifting part and the working component, so that the lifting part and the working component and the transmission part form a differential motion.

3. The lifting device according to claim 2, wherein, The transmission unit includes the connecting assembly, and the frictional inertia between the connecting assembly and the working assembly is less than the self-weight inertia of the working assembly, so that the connecting assembly and the working assembly form a differential motion; Alternatively, the lifting part includes the connecting component, the transmission part includes the driving component, and the frictional inertia between the connecting component and the working component and the driving component is less than the self-weight inertia of the connecting component and the working component, so that the connecting component and the working component and the driving component form a differential motion.

4. The lifting device according to claim 3, wherein, The connecting assembly includes a connecting shaft, a first connecting member, and a second connecting member. The first end of the connecting shaft is disposed within the driving assembly. The first connecting member is connected to the second end of the connecting shaft. The second connecting member abuts against the second end of the first connecting member away from the connecting shaft. The first connecting member and the second connecting member are disposed within the working assembly. Alternatively, the connecting assembly includes a connecting shaft and a first connecting member, and the working assembly is provided with a second connecting member that attracts the first connecting member.

5. The lifting device according to claim 4, wherein, The second end of the connecting shaft is provided with a groove, and the end of the first connector near the connecting shaft is provided with a protrusion. The protrusion is disposed in the groove, and the protrusion is interference-fitted with the groove.

6. The lifting device according to claim 4, wherein, When the transmission part includes the connecting assembly, the working assembly includes a first housing, and the connecting assembly further includes a first limiting member, a second limiting member, and a clearance member located within the first housing; The second end of the connecting shaft, the first connecting member, and the second connecting member are disposed within the first limiting member, the first limiting member is disposed within the yielding member, and the yielding member is disposed within the second limiting member.

7. The lifting device according to claim 6, wherein, The outer side wall of the second limiting member is provided with a first threaded structure, and the inner side wall of the first housing is provided with a second threaded structure. The second threaded structure is screwed into the first threaded structure so that the frictional inertia between the lifting part and the transmission part is less than the self-weight inertia of the lifting part.

8. The lifting device according to claim 7, wherein, The second limiting member includes a first component and a second component that are connected to each other, wherein the cross-sectional area of ​​the first component is larger than the cross-sectional area of ​​the second component; The first limiting member is disposed inside the first component, the outer side wall of the second component is provided with a first protrusion, the first protrusion is provided with the first thread structure, and the clearance member is disposed inside the second component.

9. The lifting device according to claim 8, wherein, The connecting assembly further includes a first elastic element and a base plate, one end of the first elastic element is fixedly connected to the base plate, and the clearance element passes through the other end of the first elastic element and abuts against the base plate. The second connector is disposed on the side of the base plate near the first elastic member, and the second connector abuts against the base plate.

10. The lifting device according to claim 9, wherein, The outer wall of the relief member is provided with a second protrusion. The relief member is disposed inside the second component. A portion of the first elastic member is disposed between the relief member and the second component, and a portion of the first elastic member contacts the second protrusion.

11. The lifting device according to claim 4, wherein, The connecting component is rotatable; When the lifting part includes the connecting assembly and the transmission part includes the driving assembly, the driving assembly further includes a second housing, the second housing has a receiving cavity, the receiving cavity is provided with a guide, at least a portion of the connecting assembly is located in the receiving cavity, and the guide is threadedly engaged with the connecting assembly to convert the rotational motion of the connecting assembly into up-down motion.

12. The lifting device according to claim 11, wherein, The guide member has a guide channel extending in the vertical direction, and the connecting component passes through the guide channel; The outer peripheral wall of the connecting component is provided with a third thread structure, and the inner peripheral wall of the guide channel is provided with a fourth thread structure. The fourth thread structure meshes with the third thread structure so that the frictional inertia between the lifting part and the transmission part is less than the self-weight inertia of the lifting part.

13. The lifting device according to claim 12, wherein, The connecting assembly further includes a mating structure, which includes a mating component and a transmission structure. The mating component is sleeved on the outer periphery of the connecting shaft, and the transmission structure is disposed between the mating component and the connecting shaft. The outer peripheral wall of the mating component is provided with the third thread structure. The working assembly is detachably connected to the connecting shaft, and the driving assembly is drivingly connected to the connecting shaft. The connecting component has a first position, a second position, and a third position arranged sequentially from top to bottom; The connecting component is configured to drive the working component to move up and down during movement between the second position and the third position, and to separate the working component from the connecting component during movement from the second position to the first position. The transmission structure is configured to transmit rotational power of the connecting shaft to the mating member to drive the mating member to rotate, and when the connecting assembly is in the third position, the power transmission between the connecting shaft and the mating member is disconnected so that the connecting shaft is rotatable relative to the mating member.

14. The lifting device according to claim 13, wherein, The lifting device includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is located in the receiving cavity and sleeved on the outer periphery of the connecting shaft. The first transmission gear is fixed relative to the connecting shaft. The first transmission gear and the mating component are arranged at intervals along the axial direction of the connecting shaft. The second transmission gear is connected to the driving assembly in a transmission manner.

15. The lifting device according to claim 13, wherein, The transmission structure includes a first transmission structure and a second transmission structure arranged at intervals along the axial direction of the mating member. The first transmission structure is configured to transmit the power of rotation of the connecting shaft in a first direction to the mating member, so as to drive the mating member to rotate in the first direction and move downward. The second transmission structure is configured to transmit the power of rotation of the connecting shaft in a second direction to the mating member, so as to drive the mating member to rotate in the second direction and move upward. The second direction is opposite to the first direction. The lower end of the fourth threaded structure has a threaded locking structure. When the connecting component is in the third position, the threaded locking structure cooperates with the fourth threaded structure to restrict the mating component from rotating along the first direction.

16. The lifting device according to claim 15, wherein, The first transmission structure is a damping structure, and the second transmission structure is a one-way bearing sleeved on the outer periphery of the connecting shaft. The second transmission structure is connected to the mating part and fixed relative to the mating part.

17. The lifting device according to claim 16, wherein, The damping structure includes a damping ring, which is sleeved on the outer periphery of the connecting shaft and fixed relative to the connecting shaft. The damping ring is a flexible or elastic element, and it engages with the mating part or is mated by friction.

18. The lifting device according to claim 17, wherein, The mating component includes an external threaded portion and a damping portion. The external threaded portion is sleeved on the outer peripheral side of the connecting shaft, and the outer peripheral wall of the external threaded portion is provided with the third thread structure. The damping portion is connected to the inner peripheral wall of the external threaded portion. The damping ring and the second transmission structure are located on both sides of the damping portion along the axial direction of the connecting shaft. The damping portion meshes with the damping ring or is mated by friction.

19. The lifting device according to claim 18, wherein, The connecting assembly further includes a clamping structure, which is sleeved on the outer periphery of the connecting shaft and located on one axial side of the mating structure. The second transmission structure abuts against the damping part in the axial direction of the connecting shaft, and the clamping structure abuts against the second transmission structure in the axial direction of the connecting shaft.

20. The lifting device according to claim 19, wherein, The clamping structure includes a clamping block and a clamping spring. Both the clamping block and the clamping spring are sleeved on the outer periphery of the connecting shaft and arranged along the axial direction of the connecting shaft. The clamping block abuts against the second transmission structure in the axial direction of the connecting shaft. One end of the clamping spring abuts against or is connected to the clamping block in the axial direction of the connecting shaft, and the other end of the clamping spring abuts against or is connected to the connecting shaft.

21. The lifting device according to claim 20, wherein, The lifting device includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is located in the receiving cavity and sleeved on the outer periphery of the connecting shaft. The first transmission gear is fixed relative to the connecting shaft. The first transmission gear and the mating member are arranged at intervals along the axial direction of the connecting shaft. The second transmission gear is connected to the driving assembly. The other end of the compression spring abuts against or connects to the first transmission gear in the axial direction of the connecting shaft.

22. The lifting device according to claim 13, wherein, The mating component further includes a third limiting component, and the driving assembly further includes a fourth limiting component; the outer side wall of the third limiting component is provided with the third thread structure; The third and fourth limiting members are disposed within the receiving cavity of the second housing, and the first end of the connecting shaft is disposed between the third and fourth limiting members.

23. The lifting device according to claim 22, wherein, The working component also includes a third housing, and the connecting component also includes a fifth limiting member, a sixth limiting member, and a second elastic member located within the third housing; The second end of the connecting shaft, the first connecting member, and the second connecting member are disposed within the fifth limiting member, the fifth limiting member is disposed within the sixth limiting member, and the second elastic member is disposed between the sixth limiting member and the third housing.

24. The lifting device according to claim 23, wherein, The third housing has a mounting groove, and the second connector is located in the mounting groove.

25. The lifting device according to claim 24, wherein, The mounting slot is provided with a fixed bracket, which is connected to the working component, and the second connector is installed on the fixed bracket.

26. The lifting device according to claim 25, wherein, The fifth limiting member has a guide portion, and the fixed bracket is provided with a guide groove. The guide portion is inserted into or disengaged from the guide groove in the up-down direction.

27. A cleaning device, wherein, include: The fuselage has a limiting structure; The first cleaning component includes a lifting device and a working component as described in any one of claims 1-26, wherein the lifting device is mounted on the machine body, the working component is detachably connected to a connecting component in the lifting device, the connecting component is movable up and down, and the limiting structure is used to block the working component from moving upward during the upward movement of the connecting component, so as to separate the working component from the connecting component.

28. The cleaning apparatus according to claim 27, wherein, The connecting component has a first position, a second position, and a third position arranged sequentially from top to bottom. The connecting component is configured to drive the working component to move up and down during the movement between the second position and the third position, and to block the upward movement of the working component by the limiting structure during the upward movement from the second position to the first position, so as to separate the working component from the connecting component.

29. The cleaning apparatus according to claim 27, wherein, The cleaning device further includes a second cleaning component, which is disposed on the body. The first cleaning component is used for wet cleaning, and the second cleaning component is used for dry cleaning.

30. The cleaning apparatus according to claim 27, wherein, At least a portion of the base of the fuselage constitutes the limiting structure.

31. A cleaning system, wherein, include: The cleaning apparatus according to any one of claims 27-30; A cleaning base station, wherein the cleaning device is adapted to cooperate with the cleaning base station, and the cleaning base station is used to clean and / or charge the cleaning device.

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