Cleaning assembly and cleaning equipment

Abstract

The invention provides a cleaning assembly and cleaning equipment, and relates to the technical field of cleaning assemblies. The cleaning assembly comprises a fixing frame, a swing arm and a power assembly. The fixing frame is configured to be connected with a main body of the cleaning equipment, and a first rotating shaft and a first limiting part are arranged on the fixing frame. The swinging arm is rotationally connected with the fixing frame through a first rotating shaft, and a second limiting part and a rotatable cleaning part are arranged on the swinging arm; the power assembly drives the cleaning piece to rotate, and the power assembly drives the swing arm and the fixing frame to rotate relatively so as to drive the swing arm to move between the retracting position and the stretching position. And the first limiting part is matched with the second limiting part so as to limit the swinging arm to move between the retracting position and the extending position. The power assembly drives the fixing frame and the swing arm to rotate relatively, the cleaning range is enlarged, cleaning blind areas are reduced, and the cleaning effect is improved. Through cooperation of the first limiting part and the second limiting part, the swing position of the swing arm is limited.

Description

[0001] This application is a divisional application of the patent application with application number 2025101211262, application date 2025-01-25, and invention title "A cleaning assembly and cleaning device". TECHNICAL FIELD

[0002] The present application relates to the technical field of cleaning assemblies, in particular to a cleaning assembly and a cleaning device. BACKGROUND

[0003] The cleaning device includes a sweeping robot, a mopping robot, a sweeping and mopping integrated robot, a floor washing machine, etc. With the improvement of living standards, the cleaning device is increasingly widely used in the family, and the requirements are also increasingly high. When the existing cleaning device cleans the special area such as the corner of the room, because of the volume of the cleaning device itself, the cleaning part cannot cover the surface to be cleaned, there is a cleaning blind area, which leads to incomplete cleaning and affects the cleaning effect and use experience. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a cleaning assembly and a cleaning device to improve the problems of large cleaning blind area and incomplete cleaning when the existing cleaning device cleans the special area such as the corner.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present application provides a cleaning assembly, which comprises a fixing frame, a swing arm and a power assembly: the fixing frame is configured to be connected with the main body of the cleaning device, and the fixing frame is provided with a first rotating shaft and a first limiting part; the swing arm is rotatably connected with the fixing frame through the first rotating shaft, and the swing arm is provided with a second limiting part and a rotatable cleaning part; the power assembly drives the cleaning part to rotate, and the power assembly drives the swing arm to rotate relative to the fixing frame to drive the swing arm to move between a retracted position and an extended position; wherein the first limiting part cooperates with the second limiting part to limit the movement of the swing arm between the retracted position and the extended position.

[0006] In an example embodiment of the present application, the second limiting part is a limiting groove, the first limiting part is a limiting block inserted into the limiting groove, and the limiting block moves to the two ends closed by the limiting groove when the swing arm is in the retracted position and the extended position.

[0007] In an example embodiment of the present application, the limiting block is an arc-shaped block, the center of the arc-shaped block is on the axis of the first rotating shaft; there is a gap between the limiting block and the first rotating shaft; and the limiting groove is an arc-shaped groove.

[0008] In an example embodiment of the present application, the fixed frame is provided with an insertion portion, the swing arm is provided with a slot compatible with the insertion portion, and the insertion portion is inserted into the slot; the first rotating shaft is arranged at the insertion portion, and the axis of the first rotating shaft coincides with the axis of the insertion portion.

[0009] In an example embodiment of the present application, the cross section of the insertion portion along the radial direction of the insertion portion is circular, and the slot is a circular slot; or the slot is an arcuate slot, and the angle of the slot is greater than 180°.

[0010] In an example embodiment of the present application, the slot is in communication with the limiting slot.

[0011] In an example embodiment of the present application, the power assembly comprises a driving member, a first transmission assembly and a second transmission assembly. The first transmission assembly drives the swing arm and the fixed frame to rotate relative to each other under the driving of the driving member; the second transmission assembly drives the cleaning member to rotate under the driving of the driving member.

[0012] In an example embodiment of the present application, the driving member comprises a rotating output shaft, the rotating output shaft rotates in a first clock direction in the normal cleaning mode, and rotates in a second clock direction in the special cleaning mode; in the case where the rotating direction of the rotating output shaft changes from the first clock direction to the second clock direction, the cleaning assembly switches from the normal cleaning mode to the special cleaning mode; in the case where the rotating direction of the rotating output shaft changes from the second clock direction to the first clock direction, the cleaning assembly switches from the special cleaning mode to the normal cleaning mode.

[0013] In an example embodiment of the present application, the output end of the first transmission assembly comprises a friction wheel, the wall surface of the fixed frame is provided with a matching surface, when the friction wheel abuts against the matching surface, there is a force between the friction wheel and the matching surface to make the friction wheel roll along the matching surface; when the swing arm is in the stowed position and the extended position, the friction wheel does not abut against the matching surface.

[0014] The second aspect of the present application provides a cleaning device, which comprises a device main body and the cleaning assembly of any one of the above, and the fixed frame of the cleaning assembly is mounted on the device main body.

[0015] In combination with the prior art, the present application has the following beneficial effects: The cleaning assembly of the present application comprises a fixed frame and a swing arm that can rotate relative to each other, the fixed frame and the swing arm are driven to rotate relative to each other by a power assembly, so that the cleaning range of the cleaning member changes. When cleaning a normal to-be-cleaned surface, the cleaning assembly is in the normal cleaning mode, and the swing arm is in the stowed position; when cleaning a special area such as a corner, the cleaning assembly is in the special cleaning mode, and the swing arm is in the extended position, thereby cleaning the area that cannot be covered by the cleaning member in the normal cleaning mode, increasing the cleaning range, reducing the cleaning blind area, improving the cleaning effect, and effectively improving the user satisfaction.

[0016] The swing position of the swing arm is limited by the cooperation of the first limiting part and the second limiting part, so that the swing arm is prevented from excessively rotating under the action of the driving assembly and the like, and the swing arm is ensured to move between the stowed position and the extended position. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other embodiments can also be obtained from these drawings without creative labor.

[0018] Figure 1 An exemplary cleaning assembly schematic diagram of the present application; Figure 2 Another angle schematic diagram of an exemplary cleaning assembly of the present application; Figure 3 A schematic diagram of a part of a power assembly of an exemplary cleaning assembly of the present application; Figure 4 A schematic diagram of a first transmission assembly and a part of a driving member of the present application; Figure 5 A schematic diagram of a cross-section of a friction wheel and an outer swing transmission assembly of the present application; Figure 6 A schematic diagram of a wheel shaft and a part of a structure of the present application; Figure 7 A part of a schematic diagram of a fixed frame of the present application; Figure 8 A schematic diagram of a part of a structure of an exemplary cleaning assembly of the present application; Figure 9 A schematic diagram of a second transmission assembly and a part of a driving member of the present application; Figure 10 Another angle schematic diagram of a second transmission assembly and a part of a driving member of the present application; Figure 11 A schematic diagram of a driving member of the present application; Figure 12 A schematic diagram of a swing arm in a stowed position of the present application; Figure 13 A schematic diagram of a swing arm from a stowed position to an extended position of the present application; Figure 14 A top view of a swing arm of the present application approaching a fully extended position; Figure 15Figure 1 is a schematic view of the relative position of the friction wheel and the fixed frame when the oscillating arm is in the position close to the fully extended position according to an embodiment of the present application; Figure 16 Figure 2 is a schematic view of the relative position of the friction wheel and the fixed frame when the oscillating arm is in the fully extended position according to an embodiment of the present application; Figure 17 Figure 3 is a schematic view of the relative position of the friction wheel and the fixed frame when the oscillating arm is in the position close to the fully retracted position according to an embodiment of the present application; Figure 18 Figure 4 is a top view of the oscillating arm in the position close to the fully retracted position according to an embodiment of the present application; Figure 19 Figure 5 is a schematic view of the relative position of the friction wheel and the fixed frame when the oscillating arm is in the position close to the fully retracted position according to an embodiment of the present application; Figure 20 Figure 6 is a schematic view of a part of the structure of the cleaning assembly according to an embodiment of the present application; Figure 21 Figure 7 is a schematic view of a part of the structure of the fixed frame according to an embodiment of the present application; Figure 22 Figure 8 is a schematic view of another part of the structure of the fixed frame according to an embodiment of the present application; Figure 23 Figure 9 is a schematic view of a part of the structure of the oscillating arm according to an embodiment of the present application.

[0019] Explanation of element reference numerals: 100, fixed frame; 110, first rotating shaft; 120, concave surface; 121, first concave surface; 122, second concave surface; 130, first limiting part; 140, insertion part; 150, rotating shaft mounting part; 160, first mounting member; 161, insertion rod; 162, insertion part; 170, top housing; 180, side housing; 200, oscillating arm; 210, second limiting part; 220, elastic member mounting part; 221, limiting protrusion; 230, insertion slot; 240, upper housing; 250, lower housing; 260, second mounting member; 300, power assembly; 310, driving member; 311, rotating output shaft; 312, driving output gear; 313, motor; 320, first transmission assembly; 321, friction wheel; 3211, stop ring; 3212, limiting ring; 322, outer swing transmission assembly; 3221, wheel shaft; 3222, first stop part; 3223, second stop part; 3224, first elastic member; 3225, outer swing output gear; 3226, cover plate; 323, first intermediate transmission assembly; 3231, first gear; 330, second transmission assembly; 331, first rotation transmission assembly; 3311, second gear; 3312, first rotation transmission gear; 332, second rotation transmission assembly; 3321, third gear; 3322, fourth gear; 3323, second rotation transmission gear; 3324, fifth gear; 3325, sixth gear; 400, second elastic member. DETAILED DESCRIPTION

[0020] Other advantages and benefits of the present application will become apparent to those skilled in the art upon consideration of the disclosure or can be learned by practice of the application. The present application can be realized and achieved by means of the structures and combinations described in this specification and claims. Various modifications and changes can be made thereto by those skilled in the art without departing from the spirit and scope of the application. It is to be understood that the following examples and features thereof can be combined with each other unless otherwise contraindicated. It is also to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to limit the scope of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The present application can be implemented using any methods, devices, and materials similar or equivalent to those described in the detailed description of the application according to the principles of the present application.

[0021] When a numerical range is given in the embodiments, it is understood that, unless otherwise specified by the present application, each numerical range has two endpoints and any numerical value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains and the present application, and any method, device, and material of the prior art similar or equivalent to the methods, devices, and materials of the embodiments of the present application can be used to implement the present application.

[0022] It should be noted that the terms such as "upper", "lower", "left", "right", "middle", and "one" used in the specification are only for the convenience of clear description, and are not intended to limit the scope of the present application. Changes or adjustments of the relative relationship without substantial changes in the technical content are also considered as the scope of the present application.

[0023] The present application provides a cleaning device, which can be a floor mopping robot, a sweeping and mopping integrated machine, or other cleaning robots meeting requirements.

[0024] The cleaning device includes but is not limited to a device body, a cleaning system, and a driving system. The above-mentioned systems cooperate with each other to enable the cleaning device to move autonomously to achieve a cleaning function. The functional elements of the above-mentioned systems are integrally arranged in the device body. It can be understood that the cleaning device 1 can be a self-moving cleaning device, which can automatically perform cleaning operations in a certain area to be cleaned without user operation. Of course, the cleaning device can also be a device that needs user operation, such as a scrubber, a sweeping and mopping integrated machine, etc.

[0025] The cleaning system of the cleaning device can include a dry cleaning system, which includes the aforementioned cleaning elements that can interfere with the surface to be cleaned to clean the surface to be cleaned. For example, the cleaning elements can include a roller brush module, and the cleaning system includes a dust box, a dust collection fan, and a dust collection port in front of the dust collection port between the roller brush and the dust box. Then the dust, particulate matter, and other garbage on the ground are sucked into the dust box by the gas generated by the dust collection fan.

[0026] The cleaning system can include a side brush module connected to the device body for moving debris and other debris outside the roller brush area into the roller brush area of the cleaning system. For example, the cleaning device can be a sweeping robot.

[0027] The cleaning system can include a wet cleaning system, which includes the aforementioned cleaning elements that can interfere with the surface to be cleaned to achieve wet cleaning of the surface to be cleaned. For example, the cleaning device can be a mopping robot.

[0028] When the existing cleaning device cleans the surface to be cleaned, the conventional wide and flat position can be cleaned more cleanly, but when it encounters a corner area, because the cleaning device itself has a certain volume, the cleaning device cannot enter the corner area, and the cleaning assembly cannot clean the corner area.

[0029] In view of this, the present application provides a cleaning assembly and a cleaning device. The cleaning assembly can be a roller brush module, a side brush module, or other cleaning assemblies of the cleaning system. The following will be described in detail with the cleaning assembly as a side brush module.

[0030] The swing arm 200 of the cleaning assembly has a stowed position and an extended position. When sweeping a wide and flat position, the cleaning assembly is in a conventional cleaning mode, and the swing arm 200 is in the stowed position to clean the surface to be cleaned. When encountering a corner area, the cleaning assembly switches to a special cleaning mode, and the swing arm 200 swings to the extended position to adjust the cleaning range of the cleaning element. The cleaning element can extend into the corner area to clean the corner area or the area near the corner, thereby expanding the cleaning area of the cleaning device and improving the comprehensiveness of the cleaning range and the user experience.

[0031] Referring to Figures 1 to 23 In a first aspect, the present application provides a cleaning assembly, comprising a fixing frame 100, a swing arm 200 and a power assembly 300.

[0032] The fixing frame 100 is configured to be connected to a main body of a cleaning device. A rotatable cleaning member is mounted on the swing arm 200, and the swing arm 200 is rotationally connected to the fixing frame 100, Referring to Figure 1 and Figure 2 In an embodiment, the fixing frame 100 is provided with a first rotation shaft 110. The swing arm 200 is rotationally connected to the fixing frame 100 through the first rotation shaft 110. For example, one end of the first rotation shaft 110 is fixed to the fixing frame 100, and the other end is arranged through the swing arm 200. The swing arm 200 can rotate relative to the first rotation shaft 110, so that the swing arm 200 rotates relative to the fixing frame 100. Alternatively, one end of the first rotation shaft 110 is arranged through the fixing frame 100, and the other end is fixed to the swing arm 200. The first rotation shaft 110 can rotate relative to the fixing frame 100, so that the swing arm 200 rotates relative to the fixing frame 100. Alternatively, one end of the first rotation shaft 110 is arranged through the fixing frame 100, and the other end is arranged through the swing arm 200. The first rotation shaft 110 can rotate relative to the fixing frame 100 and the swing arm 200, so that the swing arm 200 rotates relative to the fixing frame 100.

[0033] Of course, as some optional ways, the first rotation shaft 110 can also be rotationally connected to the fixing frame 100 and / or the swing arm 200 in other ways, so that the swing arm 200 can rotate relative to the fixing frame 100.

[0034] The power assembly 300 drives the cleaning member to rotate, and can drive the swing arm 200 to rotate relative to the fixing frame 100, so as to drive the swing arm 200 to move between the stowed position and the extended position.

[0035] The cleaning assembly has a normal cleaning mode and a special cleaning mode. In the normal cleaning mode, the swing arm 200 is located in the stowed position, and in the special cleaning mode, the swing arm 200 is located in the extended position.

[0036] The cleaning assembly of the present application comprises a fixed frame 100 and a swing arm 200 which can rotate relatively, and the fixed frame 100 and the swing arm 200 are driven to rotate relatively by a power assembly 300, so that the cleaning range of the cleaning member is changed. When cleaning a common surface to be cleaned, the cleaning assembly is in a normal cleaning mode, and the swing arm 200 is in a retracted position; when cleaning a special area such as a wall corner, the cleaning assembly is in a special cleaning mode, and the swing arm 200 is in an extended position, thereby cleaning the area which cannot be covered by the cleaning member in the normal cleaning mode, increasing the cleaning range, reducing the cleaning blind area, improving the cleaning effect, and effectively improving the user satisfaction.

[0037] Please refer to Figure 3 In an embodiment, the power assembly 300 comprises a driving member 310, a first transmission assembly 320 and a second transmission assembly 330. The first transmission assembly 320 drives the swing arm 200 and the fixed frame 100 to rotate relatively under the driving of the driving member 310; and the second transmission assembly 330 drives the cleaning member to rotate under the driving of the driving member 310.

[0038] One driving member 310 realizes the functions of rotating the swing arm 200 and rotating the cleaning member, improves the utilization rate of the driving member 310, reduces the number of driving members 310 to be set, and reduces the cost; saves the space of the cleaning assembly, facilitates the internal structure design of the cleaning assembly, is conducive to the miniaturization and integration of the cleaning assembly and the cleaning equipment, and is further conducive to reducing the cleaning blind area.

[0039] Please refer to Figure 11 For example, the driving member 310 can be a motor 313, and the first transmission assembly 320 and the second transmission assembly 330 can be transmission assemblies for transmitting the output torque of the motor 313, such as gear transmission assemblies, worm transmission assemblies, belt transmission assemblies, friction transmission assemblies, etc., and can also be combinations of the above transmission assemblies.

[0040] Please refer to Figure 11In an embodiment, the driving member 310 comprises a rotating output shaft 311, which can be an output shaft of the motor 313 or a shaft connected to the output shaft of the motor 313, for example, the rotating output shaft 311 is connected to the output shaft of the motor 313 through a shaft coupling. In the normal cleaning mode, the rotating output shaft 311 rotates in a first clockwise direction, and in the special cleaning mode, the rotating output shaft 311 rotates in a second clockwise direction. One of the first clockwise direction and the second clockwise direction is the clockwise direction, and the other is the counterclockwise direction. In the case where the rotating direction of the rotating output shaft 311 changes from the first clockwise direction to the second clockwise direction, the cleaning assembly switches from the normal cleaning mode to the special cleaning mode; in the case where the rotating direction of the rotating output shaft 311 changes from the second clockwise direction to the first clockwise direction, the cleaning assembly switches from the special cleaning mode to the normal cleaning mode. In other words, by changing the rotating direction of the rotating output shaft 311, the movement of the swing arm 200 between the retracted position and the extended position is realized, and the switching between the normal cleaning mode and the special cleaning mode is realized. When the driving member 310 comprises the motor 313, the forward and reverse rotation of the motor 313 is simple and controllable, the operation is stable, and by changing the rotating direction of the rotating output shaft 311, the cleaning mode of the cleaning assembly is changed, which is convenient to control and beneficial to realize.

[0041] In an embodiment, the cleaning member rotates in the same clockwise direction in the special cleaning mode and in the normal cleaning mode. The cleaning member can be a brush that sweeps the dust, particulate matter, and hair and other garbage on the ground. If the cleaning member changes the rotating direction, the cleaned dust, particulate matter, and other garbage will be polluted again, and dusting and other situations will easily occur. The cleaning member of the present application keeps rotating in the same clockwise direction, which is convenient for cleaning dust, particulate matter, and other garbage, and the cleaning member has consistency in cleaning in the normal cleaning mode and the special cleaning mode, which is beneficial to the cleaning member to clean dust, particulate matter, and other garbage and be sucked into the cleaning device for temporary storage, thereby improving the cleaning degree.

[0042] In some embodiments, the power assembly 300 is arranged on the swing arm 200. Since the transmission mechanism of the power assembly 300 involves more gears and the like, the transmission connection is more complex, and the power assembly 300 is arranged as a whole on the swing arm 200. When the swing arm 200 rotates with the fixed frame 100, the power assembly 300 moves as a whole with the swing arm 200. The power assembly 300 arranged as a whole on the swing arm 200 can make the transmission mechanism swing as a whole with the swing arm 200, thereby reducing the probability of abnormality of the transmission mechanism during the swing of the swing arm 200. The transmission mechanism of the power assembly 300 includes but is not limited to the first transmission assembly 320 and the second transmission assembly 330.

[0043] Of course, as some optional ways, the power assembly 300 can also be arranged on the swing arm 200; it can also be partially arranged on the swing arm 200 and partially arranged on the fixed frame 100, and the power assembly 300 can drive the swing arm 200 to rotate relative to the fixed frame 100.

[0044] In some embodiments, the first rotating shaft 110 is arranged independently of the power assembly 300. When one motor is used to realize the swing of the swing arm 200 and the self-rotation of the cleaning member, the transmission system involved in the first transmission assembly 320, the second transmission assembly 330 and other transmission mechanisms is relatively complex, and the swing arm 200 has very limited internal space. The arrangement flexibility and compactness of the first transmission assembly 320 and the second transmission assembly 330 are very critical to space saving and transmission stability. In the embodiments of the present application, by arranging the first rotating shaft 110 independently of the first transmission assembly 320, the second transmission assembly 330 and other components of the power assembly 300, the arrangement position of the first rotating shaft 110 can be avoided to affect the arrangement of the first transmission assembly 320 and the second transmission assembly 330, thereby improving the arrangement flexibility and compactness of the first transmission assembly 320 and the second transmission assembly 330, and further reducing the design difficulty of the transmission assembly while ensuring space utilization and transmission stability.

[0045] In some embodiments, the first rotating shaft 110 is arranged closer to the edge of the fixed frame 100 and the edge of the swing arm 200, so as to avoid occupying the middle space of the swing arm, further improve the arrangement flexibility and compactness of the transmission mechanism in the swing arm, and at the same time, reduce the interference and limitation of the main body of the fixed frame 100 or other components on the fixed frame 100 to the swing arm 200 when the swing arm 200 swings, so as to ensure the swing range of the swing arm 200, improve the cleaning range, and improve the user experience.

[0046] Of course, in some embodiments, a gear shaft or a rotating output shaft 311 in the power assembly 300 can also be used as the first rotating shaft 110.

[0047] Please refer to Figure 15 In an embodiment, the output end of the first transmission assembly 320 includes a friction wheel 321, the wall surface of the fixed frame 100 is provided with a matching surface 120, the friction wheel 321 abuts against the matching surface 120, and when the friction wheel 321 rotates, there is a force between the friction wheel 321 and the matching surface 120, so that the friction wheel 321 rolls along the matching surface 120, thereby driving the swing arm 200 and the fixed frame 100 to relatively rotate around the first rotating shaft 110, and realizing the switching of the swing arm 200 between the extended position and the retracted position.

[0048] Please refer to Figure 15In an embodiment, the force between the friction wheel 321 and the accommodating surface 120 can be frictional force, for example, the friction wheel 321 rubs against the surface of the accommodating surface 120, so that the friction wheel 321 rolls along the surface of the accommodating surface 120. The outer wall of the friction wheel 321 can include a rough surface after roughening treatment, and the surface of the accommodating surface 120 is also a rough surface after roughening treatment. The frictional resistance between the rough surface and the rough surface is greater, which is more conducive to the rolling of the friction wheel 321 along the surface of the accommodating surface 120. The outer wall of the friction wheel 321 can also be a corrugated surface, and the accommodating surface 120 is also a corrugated surface, thereby increasing the frictional resistance between the friction wheel 321 and the accommodating surface 120, facilitating the rolling of the friction wheel 321 along the surface of the accommodating surface 120, and the relative rotation of the swing arm 200 and the fixed frame 100. The outer wall of the friction wheel 321 and the accommodating surface 120 can also be other surfaces treated to increase friction, and the surface treatment methods of the outer wall of the friction wheel 321 and the accommodating surface 120 can be the same or different.

[0049] In order to increase the frictional force between the friction wheel 321 and the accommodating surface 120, the outer wall of the friction wheel 321 can be made of rubber material to increase the pressure between the friction wheel 321 and the accommodating surface 120. Of course, the outer wall of the friction wheel 321 can also be made of other plastic, metal or other materials.

[0050] In another embodiment, the force between the friction wheel 321 and the accommodating surface 120 can be pressure, for example, the outer wall of the friction wheel 321 is provided with a plurality of first teeth, the accommodating surface 120 is provided with a plurality of second teeth engaged with the first teeth, and the first teeth and the second teeth are engaged to make the friction wheel 321 roll along the accommodating surface 120.

[0051] Of course, as some optional ways, the force between the friction wheel 321 and the accommodating surface 120 can also be other forces, so that the friction wheel 321 can roll along the surface of the accommodating surface 120 when it rotates.

[0052] In the process of cleaning by the cleaning member, the time required for the swing arm 200 to swing is very short, so that the friction wheel 321 is in contact with the accommodating surface 120 for a short time, which will not cause damage to the friction surface of the friction wheel 321 and the accommodating surface 120. However, if the action surface of the friction wheel 321 in contact with the accommodating surface 120 is still in contact with other components after the swing arm 200 is swung to the position, the action surface of the friction wheel 321 will be damaged, which will affect the function of the friction wheel 321 and the swing of the swing arm 200.

[0053] Please refer to Figure 11 and Figure 16In some embodiments, when the swing arm 200 moves to the stowed position or the extended position, the friction wheel 321 does not abut against the accommodating surface 120, which can avoid continuous interaction between the friction wheel 321 and the accommodating surface 120, thereby improving the problem that the working surface of the friction wheel 321 and the accommodating surface 120 are abraded, and further affecting the swing of the swing arm 200. Therefore, by using the above scheme, the service life of the friction wheel 321 and the accommodating surface 120 can be prolonged, and the stability of the swing of the swing arm 200 can be ensured.

[0054] Referring to Figure 7 In an embodiment, the accommodating surface 120 protrudes from the wall surface of the fixed frame 100. When the swing arm 200 is kept in the stowed position or the extended position, the friction wheel 321 always rotates, and the protruding accommodating surface 120 from the wall surface of the fixed frame 100 can prevent the friction wheel 321 from abutting against the wall surface when the friction wheel 321 moves to the two sides of the accommodating surface 120, thereby avoiding friction between the swing arm 200 and the wall surface of the fixed frame 100 when the swing arm 200 is kept in the extended position or the stowed position, reducing the abrasion of the friction wheel 321 and the wall surface of the fixed frame 100, prolonging the service life of the friction wheel 321, and improving the durability of the cleaning device.

[0055] Of course, as an optional mode, the accommodating surface 120 is flush with part of the wall surface of the fixed frame 100, and the two ends of the accommodating surface 120 are respectively provided with recesses, and the accommodating surface 120 protrudes from the wall surface at the recesses. When the swing arm 200 is kept in the stowed position or the extended position, the friction wheel 321 is located at the recesses and does not contact the recesses, thereby reducing the abrasion of the friction wheel 321.

[0056] Referring to Figure 7 In an embodiment, the accommodating surface 120 includes a first accommodating surface 121 and a second accommodating surface 122, and the first accommodating surface 121 and the second accommodating surface 122 are arranged along the axial direction of the friction wheel 321. Taking the axial direction of the friction wheel 321 as the up-down direction when the cleaning device is located on the surface to be cleaned as an example, the first accommodating surface 121 and the second accommodating surface 122 are arranged in the up-down direction. The friction wheel 321 moves up and down to abut against the first accommodating surface 121 and the second accommodating surface 122 respectively, and the position switching of the swing arm 200 is completed by the rotation of the friction wheel 321 in different directions.

[0057] Referring to Figure 7 In an embodiment, the projection of the first accommodating surface 121 along the axial direction of the friction wheel 321 exceeds the projection of the second accommodating surface 122 at one end, and the projection of the second accommodating surface 122 exceeds the projection of the first accommodating surface 121 at the other end. The first transmission assembly 320 includes an outer swing transmission assembly 322, and the outer swing transmission assembly 322 drives the friction wheel 321 to move along the axial direction of the friction wheel 321, so that the friction wheel 321 abuts against the first accommodating surface 121 and the second accommodating surface 122 respectively.

[0058] Please refer to Figure 7 , the first end of the first accommodating surface 121 is beyond the first end of the second accommodating surface 122, and the second end of the second accommodating surface 122 is beyond the second end of the second accommodating surface 122. The first end and the second end are opposite ends of the accommodating surface 120, for example, the first end and the second end are two ends of the accommodating surface 120 perpendicular to the axial direction of the friction wheel 321. When the swing arm 200 is kept in the extended position or the retracted position, the friction wheel 321 is located beside the first end of the second accommodating surface 122 or beside the second end of the first accommodating surface 121, that is, the friction wheel 321 does not abut against the second accommodating surface 122 and the first accommodating surface 121, so as to avoid the continuous action of the friction wheel 321 and the first accommodating surface 121 and the second accommodating surface 122, which causes the wear of the friction wheel 321 and the accommodating surface 120.

[0059] For example, as shown in Figure 12 , when the swing arm 200 is kept in the retracted position, the friction wheel 321 is above the second end of the second accommodating surface 122 and beside the second end of the first accommodating surface 121, and the friction wheel 321 does not abut against the first accommodating surface 121 and the second accommodating surface 122. When the swing arm 200 needs to move to the extended position, as shown in Figure 13 , the friction wheel 321 is controlled to move downward to the position where the friction wheel 321 abuts against the second end of the second accommodating surface 122, and the friction wheel 321 rotates to move along the surface of the second accommodating surface 122 until the friction wheel 321 moves to the first end of the second accommodating surface 122 and is separated from the second accommodating surface 122, as shown in Figure 15 , at this time, the swing arm 200 is in the extended position. Similarly, when the swing arm 200 needs to move from the extended position to the retracted position, as shown in Figure 16 , the friction wheel 321 moves upward to the position where the friction wheel 321 abuts against the first accommodating surface 121, and then the friction wheel 321 rolls along the surface of the first accommodating surface 121 to drive the swing arm 200 to rotate relative to the fixed frame 100 until the friction wheel 321 is above the second end of the second accommodating surface 122 and beside the second end of the first accommodating surface 121, and the swing arm 200 moves to the retracted position.

[0060] When the swing arm 200 is in the retracted position, the friction wheel 321 does not abut against the first accommodating surface 121, and the friction wheel 321 can abut against the second accommodating surface 122 after moving along the axial direction of the friction wheel 321. When the swing arm 200 is in the extended position, the friction wheel 321 does not abut against the second accommodating surface 122, and the friction wheel 321 can abut against the first accommodating surface 121 after moving along the axial direction of the friction wheel 321.

[0061] It should be noted that the first end and the second end are for example, and are not specific to one end of the accommodating surface 120. For example, the first end can be the left end of the accommodating surface 120, and the second end can be the right end of the accommodating surface 120. Similarly, the positions of the first accommodating surface 121 and the second accommodating surface 122 in the axial direction of the friction wheel 321 are also for example. For example, when the axial direction of the friction wheel 321 is the vertical direction, the first accommodating surface 121 can be located above the second accommodating surface 122, and the first accommodating surface 121 can also be located below the second accommodating surface 122.

[0062] Referring to Figures 4 to 6 In an embodiment, the outer swing transmission assembly 322 includes an axle 3221, and the axle 3221 and one of the friction wheels 321 are provided with a helical tooth groove in the axial direction of the axle 3221, and the other is provided with a tooth that matches the tooth groove. The tooth can slide in the tooth groove, so that the friction wheel 321 moves in the axial direction of the axle 3221.

[0063] In some embodiments, the friction wheel 321 is provided with a tooth groove through the inner wall of the axle 3221, and the outer periphery of the axle 3221 is provided with a tooth. The cooperation of the tooth and the tooth groove makes the friction wheel 321 move in the axial direction of the axle 3221 when the tooth slides in the tooth groove.

[0064] Referring to Figure 5 and Figure 6 In some embodiments, the tooth groove is provided on the outer periphery of the axle 3221, and the friction wheel 321 is provided with a tooth through the inner wall of the axle 3221. The cooperation of the tooth and the tooth groove makes the friction wheel 321 move in the axial direction of the axle 3221 when the tooth slides in the tooth groove. The length of the tooth groove in the axial direction of the axle 3221 is the same as or positively related to the stroke of the friction wheel 321 moving in the axial direction of the axle 3221. The tooth groove is provided on the axle 3221, and the axial height of the friction wheel 321 can be selected to be small, thereby reducing the space occupation of the friction wheel 321 and the axle 3221, effectively reducing the volume of the cleaning assembly, and facilitating the internal space layout of the cleaning assembly.

[0065] The outer swing transmission assembly 322 comprises a first stop portion 3222 and a second stop portion 3223, which limit the axial movement stroke of the friction wheel 321 along the wheel shaft 3221. During the swing of the swing arm 200, the friction wheel 321 needs to generate a force with the engaging surface 120, which has a tendency to hinder the rotation of the friction wheel 321 along the wheel shaft 3221. By setting the first stop portion 3222 and the second stop portion 3223, the friction wheel 321 is limited, and when the friction wheel 321 moves to the first stop portion 3222 or the second stop portion 3223, the wheel shaft 3221 drives the friction wheel 321 to rotate. At the same time, the hard stop can avoid the speed difference between the friction wheel 321 and the wheel shaft 3221 caused by the force between the friction wheel 321 and the engaging surface 120, so that the friction wheel 321 moves up and down along the wheel shaft 3221. Therefore, in the embodiment of the present application, the wheel shaft 3221 drives the friction wheel 321 to rotate by setting the first stop portion 3222 and the second stop portion 3223, which can further ensure the stability of the swing of the swing arm 200.

[0066] The first stop portion 3222 can be arranged in the tooth groove, or outside the tooth groove, or partially arranged in the tooth groove and partially arranged outside the tooth groove. The second stop portion 3223 can be arranged in the tooth groove, or outside the tooth groove, or partially arranged in the tooth groove and partially arranged outside the tooth groove. The first stop portion 3222 and the second stop portion 3223 can limit the movement path of the friction wheel 321 on the wheel shaft 3221 by limiting the movement path of the tooth along the tooth groove, or directly limit the movement path of the friction wheel 321 on the wheel shaft 3221 by limiting the position of the friction wheel 321 on the wheel shaft 3221. Please refer to Figure 5 and Figure 6 In an embodiment, the tooth groove is provided with a first stop portion 3222 and a second stop portion 3223; the first stop portion 3222 is arranged at one end of the tooth groove; and the second stop portion 3223 is arranged at the other end of the tooth groove, so as to limit the stroke of the tooth in the tooth groove, and further limit the axial movement stroke of the friction wheel 321 along the wheel shaft 3221.

[0067] For example, the wheel shaft 3221 is provided with a tooth groove on the outer periphery; a first stop portion 3222 is arranged at one end of the tooth groove; a second stop portion 3223 is arranged at the other end of the tooth groove; wherein the friction wheel 321 is provided with teeth matched with the tooth groove, and the first stop portion 3222 and the second stop portion 3223 limit the sliding stroke of the teeth of the friction wheel 321 along the tooth groove, so as to limit the moving stroke of the friction wheel 321 along the axial direction of the wheel shaft 3221. Through the cooperation of the teeth and the tooth groove, the friction wheel 321 rotates relative to the wheel shaft 3221, and then the friction wheel 321 moves along the axial direction of the wheel shaft 3221, so as to adjust the relative position of the friction wheel 321 and the first and second engaging surfaces 121 and 122, and make the friction wheel 321 move between the first and second engaging surfaces 121 and 122. For example, when the teeth move to the end of the tooth groove and are limited by the first stop portion 3222 or the second stop portion 3223, the rotation of the wheel shaft 3221 drives the synchronous rotation of the friction wheel 321, so that the friction wheel 321 generates a force with the first or second engaging surface 121 or 122, and the friction wheel 321 rolls along the first or second engaging surface 121 or 122, driving the relative movement of the swing arm 200 and the fixed frame 100, until the switching of the swing arm 200 between the retracted position and the extended position is completed.

[0068] In some embodiments, the teeth on the friction wheel 321 can be protrusions extending from the inner wall of the friction wheel 321 to the axis direction of the friction wheel 321, which are inserted into the tooth groove and move relative to the tooth groove, so as to realize the movement of the friction wheel 321 along the axial direction of the wheel shaft 3221; in other embodiments, the teeth on the friction wheel 321 can also be internal threads arranged on the inner wall and matched with the tooth groove, which move relative to the tooth groove, so as to make the friction wheel 321 move along the axial direction of the wheel shaft 3221.

[0069] Of course, as some feasible ways, the friction wheel 321 can also be in other forms of teeth matched with the tooth groove, so as to realize the movement of the friction wheel 321 along the axial direction of the wheel shaft 3221 through the cooperation of the teeth and the tooth groove.

[0070] For example, the wheel shaft 3221 is arranged on the swing arm 200, which can be directly connected with the swing arm 200 in rotation, or connected with the swing arm 200 in rotation through a bearing, so as to reduce the wear between the wheel shaft 3221 and the swing arm 200.

[0071] Please refer to Figure 5 In an embodiment, the end of the wheel shaft 3221 is fixed with a cover plate 3226, and the outer diameter of the cover plate 3226 is greater than the outer diameter of the wheel shaft 3221. The cover plate 3226 further limits the friction wheel 321, so as to avoid the relative rotation between the wheel shaft 3221 and the friction wheel 321, and make the friction wheel 321 separate from the wheel shaft 3221.

[0072] Please refer to Figure 6 The first stopper 3222 is arranged on the cover plate 3226 and extends to the wheel shaft 3221 to block one end of the tooth groove. Compared with arranging the first stopper 3222 in the tooth groove of the wheel shaft 3221, arranging the first stopper 3222 on the cover plate 3226 is more convenient for processing and reduces manufacturing cost. Meanwhile, if the first stopper 3222 is arranged in the tooth groove 3221, the friction wheel 321 cannot be rotated into the wheel shaft 3221, so that the assembly of the friction wheel 321 and the wheel shaft 3221 cannot be completed. By arranging the first stopper 3222 on the cover plate 3226, the assembly of the friction wheel 321 and the wheel shaft 3221 is facilitated.

[0073] The fixing mode of the cover plate 3226 and the wheel shaft 3221 includes but is not limited to welding connection, bolt connection and glue connection, and is preferably bolt connection, that is, the bolt is screwed with the wheel shaft 3221 after penetrating the cover plate 3226, so that the cover plate 3226 and the wheel shaft 3221 are fixed.

[0074] Please refer to Figure 4 and Figure 5 In an embodiment, the outer swing transmission assembly 322 includes a first elastic member 3224, which applies a force to reduce the pressure between the friction wheel 321 and the wheel shaft 3221, for example, to reduce the pressure between the contact surfaces of the teeth and the tooth groove, so that the friction between the friction wheel 321 and the wheel shaft 3221 is reduced, for example, the friction between the contact surfaces of the matching teeth and the tooth groove is reduced. As shown in the above embodiment, the wheel shaft 3221 and the friction wheel 321 are matched by the cooperation of the teeth and the tooth groove, so that the friction wheel 321 moves along the axial direction of the wheel shaft 3221, but the friction wheel 321 itself has a certain weight, and under the action of gravity, the friction wheel 321 and the wheel shaft 3221 have a certain pressure between the contact surfaces of the matching teeth and the tooth groove, so that the friction wheel 321 and the wheel shaft 3221 have a friction force between the corresponding contact surfaces. When the wheel shaft 3221 rotates, the friction wheel 321 has a tendency to rotate with the wheel shaft 3221 under the action of the friction force, which will affect the relative rotation between the friction wheel 321 and the wheel shaft 3221. The first elastic member 3224 can reduce the pressure between the corresponding contact surfaces of the friction wheel 321 and the wheel shaft 3221, thereby reducing the friction between the corresponding contact surfaces of the friction wheel 321 and the wheel shaft 3221, and further enabling the relative rotation between the friction wheel 321 and the wheel shaft 3221. For example, the teeth of the friction wheel 321 slide along the tooth groove of the wheel shaft 3221, so that the friction wheel 321 moves in the axial direction of the friction wheel 321 relative to the wheel shaft 3221, and the switching of the friction wheel 321 between the first and second engaging surfaces 121 and 122 is completed.

[0075] Therefore, in the embodiment of the present specification, the first elastic member 3224 is arranged to offset the pressure between the tooth and the contact surface of the tooth groove, thereby reducing the friction between the tooth and the contact surface of the tooth groove, so that the tooth can slide in the tooth groove. When the tooth slides to the first stop portion 3222 or the second stop portion 3223, the first stop portion 3222 or the second stop portion 3223 is used to prevent the tooth from sliding in the tooth groove, so that the wheel shaft 3221 drives the friction wheel 321 to rotate. In the process of cleaning by the cleaning member, the time required for the swing arm 200 to swing is very short, so the working surface of the friction wheel 321 is in contact with the concave surface 120 for a short time, which will not cause damage to the working surface of the friction wheel 321 and the concave surface 120. However, if the swing arm 200 is swung to the position, the working surface of the friction wheel 321 is still in contact with other components, which will obviously cause damage to the working surface of the friction wheel 321 and affect the swing of the swing arm 200. In the embodiment of the present specification, the first elastic member 3224 is arranged to offset the pressure between the tooth and the contact surface of the tooth groove. Compared with the way of arranging a damping member on the side wall of the friction wheel 321 to change the rotating speed of the friction wheel 321, and then avoiding the co-rotation of the friction wheel 321 and the wheel shaft 3221, and realizing the movement of the friction wheel 321 relative to the wheel shaft 3221 in the axial direction, the working surface of the friction wheel 321 can be prevented from being in contact with other components after the swing arm 200 is swung to the position, and the damage to the working surface of the friction wheel 321 can be reduced.

[0076] The inner wall of the friction wheel 321 can be directly provided with a protrusion or an internal thread to form a tooth matched with the tooth groove. When the acting surface of the friction wheel 321 and the concave surface 120 is made of rubber, plastic or other materials, it is not convenient to directly provide the tooth on the inner wall of the friction wheel 321, or the durability of the tooth is limited. The friction wheel 321 can include a main body of the friction wheel 321 and a metal member arranged on the inner wall of the main body of the friction wheel 321. The metal member is relatively fixed with the main body of the friction wheel 321, which not only improves the durability of the tooth and ensures the stability of the movement of the friction wheel 321, but also effectively ensures that the friction wheel 321 and the concave surface 120 have appropriate acting force. For example, the metal member can be a metal nut, which has an internal thread matched with the tooth groove, which is convenient for material selection and processing, and reduces the cost.

[0077] The first elastic member 3224 is preferably a spring, which has stable and controllable elastic force, low cost and convenient arrangement.

[0078] Please refer to Figure 12 and Figure 20The swing arm 200 is provided with an elastic element mounting portion 220, and one end of the first elastic element 3224 away from the friction wheel 321 abuts against the elastic element mounting portion 220. The elastic element mounting portion 220 is arranged on the swing arm 200, and the first elastic element 3224 swings along with the swing arm 200 during swing of the swing arm 200, so that additional deformation of the first elastic element 3224 caused by swing of the swing arm 200 is avoided, thereby affecting the stability of the first elastic element 3224.

[0079] The elastic element mounting portion 220 can be arranged below the friction wheel 321, for example, the elastic element mounting portion 220 is arranged on the bottom wall of the housing of the swing arm 200, or when the friction wheel 321 is arranged outside the housing of the swing arm 200, the elastic element mounting portion 220 is arranged on the upper housing 240 of the swing arm 200. The first elastic element 3224 is a compression spring, which applies an elastic force to the friction wheel 321 in the opposite direction of the gravity of the friction wheel 321. Of course, the elastic element mounting portion 220 can also be arranged above the friction wheel 321, for example, when the friction wheel 321 is arranged inside the housing of the swing arm 200, the elastic element mounting portion 220 is arranged on the upper housing 240 of the swing arm 200, and the first elastic element 3224 is a tension spring, which applies an elastic force to the friction wheel 321 in the opposite direction of the gravity of the friction wheel 321.

[0080] In some embodiments, one side of the elastic element mounting portion 220 towards the friction wheel 321 is provided with a limiting protrusion 221 towards the friction wheel 321, and the first elastic element 3224 is sleeved on the limiting protrusion 221, so as to further limit the first elastic element 3224, reduce shaking of the first elastic element 3224, and improve the problem that the first elastic element 3224 shakes to interfere with movement of the friction wheel 321.

[0081] In some embodiments, the first elastic element 3224 can be sleeved outside the wheel shaft 3221, so as to further reduce occupation of space, and the wheel shaft 3221 can also be used to stabilize the first elastic element 3224.

[0082] Preferably, when the cleaning device is placed on a surface to be cleaned, the wheel shaft 3221 is arranged vertically, and the axial direction of the friction wheel 321 is vertical, so that the gravity acting on the friction wheel 321 is completely opposite to the direction of the elastic force of the first elastic element 3224, and the friction wheel 321 is more easily balanced with the wheel shaft 3221.

[0083] Please refer to Figure 5 and Figure 12In an embodiment, the friction wheel 321 is provided with a blocking ring 3211 on the side close to the first elastic member 3224, the blocking ring 3211 rotates relative to the friction wheel 321. One end of the first elastic member 3224 is pressed against the elastic member mounting portion 220 of the blocking ring 3211. The first elastic member 3224 can only contact and press the blocking ring 3211, or the first elastic member 3224 and the blocking ring 3211 can be fixed and pressed, and the fixing methods include but are not limited to welding, cementing. When the friction wheel 321 rotates relative to the wheel shaft 3221, the blocking ring 3211 rotates relative to the friction wheel 321, thereby reducing the torsion of the first elastic member 3224, reducing the probability of damage to the first elastic member 3224, prolonging the service life of the first elastic member 3224, and improving the durability of the first elastic member 3224.

[0084] In some embodiments, when the friction wheel 321 rotates relative to the wheel shaft 3221, the torque of the friction force between the blocking ring 3211 and the friction wheel 321 acting on the blocking ring 3211 is not greater than the torque of the first elastic member 3224 twisted to a threshold angle. The friction force between the blocking ring 3211 and the friction wheel 321 is small, thereby the force of the blocking ring 3211 acting on the first elastic member 3224 is small, which can reduce the torsion of the first elastic member 3224, avoid the situation that the torsion angle of the first elastic member 3224 is greater than the threshold angle, reduce the probability of damage to the first elastic member 3224, and effectively prolong the service life of the first elastic member 3224.

[0085] In an embodiment, the contact between the blocking ring 3211 and the friction wheel 321 is a smooth surface. The smooth surface can greatly reduce the friction force between the blocking ring 3211 and the friction wheel 321, which can not only reduce the torsion of the first elastic member 3224, but also avoid the friction force between the blocking ring 3211 and the friction wheel 321 hindering the rotation of the friction wheel 321, thereby avoiding the need for a larger driving force to drive the friction wheel 321 to rotate. At the same time, the small friction force between the blocking ring 3211 and the friction wheel 321 can also reduce the wear of the contact surface of the blocking ring 3211 and the friction wheel 321 when the friction wheel 321 rotates.

[0086] In some embodiments, when the friction wheel 321 includes a main body and a metal part, the blocking ring 3211 contacts the metal part. By contacting the blocking ring 3211 and the metal part, the wear of the main body of the friction wheel 321 caused by the relative rotation of the blocking ring 3211 and the main body of the friction wheel 321 can be reduced, and the damage of the blocking ring 3211 to the shape of the friction wheel 321 can be further avoided. At the same time, the friction coefficient between the main body of the friction wheel 321 and the blocking ring 3211 is usually greater than the friction coefficient between the metal part and the blocking ring 3211, and the contact between the blocking ring 3211 and the metal part facilitates the relative rotation of the friction wheel 321 and the blocking ring 3211.

[0087] In some embodiments, the blocking ring 3211 can be sleeved on the wheel shaft 3221 to further reduce the space occupation.

[0088] In some embodiments, the blocking ring 3211 can be sleeved on the wheel shaft 3221 to further reduce the space occupation.

[0089] Please refer to Figure 3 and Figure 4 In an embodiment, the first transmission assembly 320 includes a first intermediate transmission assembly 323, an input end of the first intermediate transmission assembly 323 is connected with the driving member 310, and an output end of the first intermediate transmission assembly 323 is connected with the wheel shaft 3221. The first transmission assembly 320 drives the wheel shaft 3221 to rotate by the driving member 310. The first transmission assembly 320 connects the driving member 310 and the wheel shaft 3221, so that the driving member 310 drives the wheel shaft 3221 to rotate, thereby driving the friction wheel 321 to move to swing the swing arm 200, complete the position switching of the swing arm 200, and change the cleaning mode.

[0090] Please refer to Figure 10 In an embodiment, the driving member 310 includes a rotating output shaft 311 and a driving output gear 312, the driving output gear 312 is fixed on the rotating output shaft 311, the wheel shaft 3221 is provided with an outer swing output gear 3225, the first intermediate transmission assembly 323 includes a plurality of first gears 3231 arranged in sequence along the transmission direction, adjacent first gears 3231 are engaged with each other and / or adjacent first gears 3231 are fixed with each other, a first gear 3231 at the input end of the first intermediate transmission assembly 323 is engaged with the driving output gear 312, and a first gear 3231 at the output end of the first transmission assembly 320 is engaged with the outer swing output gear 3225. The first transmission assembly 320 directly engages adjacent first gears 3231 or coaxially fixes adjacent first gears 3231 to complete the transmission, so that the torque output by the rotating output shaft 311 through the driving output gear 312 is transmitted to the wheel shaft 3221, thereby driving the friction wheel 321 to move axially and rotate circumferentially.

[0091] Please refer to Figure 14 and Figure 18In an embodiment, the cleaning assembly comprises a second elastic member 400. One end of the second elastic member 400 is arranged on the swing arm 200, and the other end of the second elastic member 400 is arranged on the fixed frame 100. When the swing arm 200 is in the stowed position, the second elastic member 400 applies a force to the swing arm 200 in a third clockwise direction, so that the friction wheel 321 is separated from the second engaging surface 122. The third clockwise direction is the rotation direction of the swing arm 200 from the extended position to the stowed position. When the swing arm 200 is in the extended position, the second elastic member 400 applies a force to the swing arm 200 in a fourth clockwise direction, so that the friction wheel 321 is separated from the second engaging surface 122. The fourth clockwise direction is the rotation direction of the swing arm 200 from the stowed position to the extended position.

[0092] When the cleaning assembly moves from the stowed position to the extended position, the friction wheel 321 rolls along the second engaging surface 122 under the action of the second engaging surface 122, as shown in FIG. 6. Figure 15 When the friction wheel 321 moves to the end of the second engaging surface 122, the friction wheel 321 is partially in contact with the second engaging surface 122, and the action between the friction wheel 321 and the second engaging surface 122 is not enough to completely separate the friction wheel 321 from the second engaging surface 122. There is always a certain force between the friction wheel 321 and the end of the second engaging surface 122, which may cause the swing arm 200 to vibrate, the friction wheel 321 to wear, and the second engaging surface 122 to wear. By applying a force to the swing arm 200 by the second elastic member 400, the friction wheel 321 can be completely separated from the second engaging surface 122, thereby reducing the vibration of the swing arm 200, avoiding the wear of the friction wheel 321 and the second engaging surface 122, and prolonging the service life of the friction wheel 321 and the second engaging surface 122. At the same time, the second elastic member 400 continuously applies a force to the swing arm 200, which can also reduce the swing of the swing arm 200 during the cleaning process of the cleaning member, and avoid the swing arm 200 from being stowed. During the cleaning process of the cleaning member, the cleaning assembly is pressed and bumped against the wall, causing the swing arm 200 to rotate towards the stowed position. Under the action of the second elastic member 400, the cleaning assembly will also return to the extended position in time.

[0093] Similarly, as shown in FIG. 7, Figure 19As shown, when the cleaning assembly is switched from the extended position to the retracted position, the friction wheel 321 is in contact with the edge portion of the first engaging surface 121, the friction wheel 321 cannot be completely separated from the first engaging surface 121, the force applied to the swing arm 200 by the second elastic member 400 in the third clockwise direction makes the swing arm 200 move towards the retracted position, the friction wheel 321 is completely separated from the first engaging surface 121, the swing of the swing arm 200 is reduced, the wear of the friction wheel 321 and the first engaging surface 121 is reduced, and the service life is improved.

[0094] In some embodiments, if the swing arm 200 is pressed against a wall or the like in the extended position and the swing arm 200 rotates towards the retracted position with a large stroke, an abnormality detection can be performed to control the motor to reverse, so that the friction wheel 321 moves along the axis of the wheel shaft 3221 to switch the engaging surface 120, and the friction wheel 321 moves along the switched engaging surface 120 to make the swing arm 200 move to the retracted position, thereby avoiding damage to the cleaning member or other components of the cleaning assembly. If the swing arm 200 is pressed against a wall or the like and the swing arm 200 rotates towards the retracted position with a large stroke, the motor will stall, and the current of the motor frame can be detected to determine whether the abnormality occurs. Of course, other methods can also be used to perform abnormality detection, which is not limited in the present application.

[0095] Please refer to Figure 14 and Figure 18 In an embodiment, when the swing arm 200 is switched between the retracted position and the extended position, the movement path of the action line of the force applied to the swing arm 200 by the second elastic member 400 passes through the axis of rotation of the swing arm 200 and the fixed frame 100. For example, the second elastic member 400 is a spring or a tension rope, and during the switching process, the second elastic member 400 intersects the axis of the first rotating shaft 110 once, thereby changing the direction of the torque of the second elastic member 400 acting on the swing arm 200. When the swing arm 200 is in the retracted position, the torque direction of the second elastic member 400 acting on the swing arm 200 is in the direction of the swing arm 200 from the extended position to the retracted position, in other words, the force of the second elastic member 400 acting on the swing arm 200 makes the swing arm 200 have a tendency to rotate in the direction from the extended position to the retracted position; when the swing arm 200 is in the extended position, the torque direction of the second elastic member 400 acting on the swing arm 200 is in the direction of the swing arm 200 from the retracted position to the extended position, in other words, the force of the second elastic member 400 acting on the swing arm 200 makes the swing arm 200 have a tendency to rotate in the direction from the retracted position to the extended position.

[0096] When the axis of the second elastic member 400 intersects the axis of the first rotation shaft 110, the perpendicular distance between the action line of the elastic force of the second elastic member 400 and the rotation axis of the swing arm 200 (i.e. the axis of the first rotation shaft 110) is zero, i.e. the force arm is zero, at this time, the torque of the second elastic member 400 on the swing arm 200 rotating around the axis of the first rotation shaft 110 is zero. When the swing arm 200 continues to swing from this position to the extended position or the retracted position, the axis of the second elastic member 400 deviates to the side of the axis of the first rotation shaft 110, and the perpendicular distance between the action line of the elastic force of the second elastic member 400 and the rotation axis of the swing arm 200 gradually increases, i.e. the force arm gradually increases, the torque of the second elastic member 400 acting on the swing arm 200 makes the swing arm 200 rotate around the axis of the first rotation shaft 110. As known from the above embodiment, when the swing arm 200 swings from the extended position to the retracted position, or the swing arm 200 swings from the retracted position to the extended position, the contact surface between the friction wheel 321 and the accommodating surface 120 decreases, resulting in a decrease in the force between the friction wheel 321 and the accommodating surface 120, and thus the torque corresponding to the force cannot overcome the resistance of the swing arm 200 rotating, and the swing arm 200 cannot continue to rotate. In the embodiment of the present application, the second elastic member 400 is further provided, and the torque corresponding to the elastic force of the second elastic member 400 is used to compensate the torque required for the swing arm 200 to continue to rotate, so that the swing arm 200 can continue to rotate, thereby enabling the friction wheel 321 to rotate to the position away from the accommodating surface 120.

[0097] Moreover, in this embodiment, when the swing arm 200 is in the extended position and the retracted position, the direction of the torque of the second elastic member 400 compensating the rotation of the swing arm 200 is different, thereby achieving that by providing one elastic member, the required torque of the swing arm 200 can be compensated when the swing arm 200 is in different positions, and the movement of the friction wheel 321 to the position is assisted to be realized; the structure is simple and compact, and the space required for the cleaning assembly to swing is small, especially for the cleaning assembly with small space, the structure design makes the structure of the cleaning assembly more compact.

[0098] When the friction wheel 321 rolls along the caressing surface 120 to the edge of the caressing surface 120, the torque of the force of the second elastic member 400 acting on the swing arm 200 is greater than or equal to the resistance torque of the swing arm 200 moving away from the caressing surface 120. When the torque of the force of the second elastic member 400 acting on the swing arm 200 is greater than the resistance torque of the swing arm 200 moving away from the caressing surface 120, the second elastic member 400 can make the swing arm 200 move away from the caressing surface 120; when the torque of the force of the second elastic member 400 acting on the swing arm 200 is equal to the resistance torque of the swing arm 200 moving away from the caressing surface 120, the swing arm 200 will continue to move under the action of inertia, and then the friction wheel 321 moves away from the caressing surface 120, effectively ensuring that the friction wheel 321 can move away from the caressing surface 120 in the extended position and the retracted position, reducing the wear of the friction wheel 321 and the caressing surface 120. The resistance torque of the swing arm 200 moving away from the caressing surface 120 includes the torque of the friction force between the swing arm 200 and the fixed frame 100 acting on the swing arm 200, and so on.

[0099] When the friction wheel 321 and the caressing surface 120 act on the swing arm 200, the torque of the force acting on the swing arm 200 is greater than the resistance torque of the initial swing of the swing arm 200, and the resistance torque of the initial swing of the swing arm 200 includes the torque of the force of the second elastic member 400 acting on the swing arm 200 and the torque of the friction force between the swing arm 200 and the fixed frame 100 acting on the swing arm 200. When the swing arm 200 moves from the extended position to the retracted position or from the retracted position to the extended position, the force of the second elastic member 400 acting on the swing arm 200 in the front section of the swing arm 200 is a resistance torque, and the swing arm 200 also needs to overcome the friction force between the swing arm 200 and the fixed frame 100 acting on the swing arm 200. The torque of the force acting on the swing arm 200 between the friction wheel 321 and the caressing surface 120 is greater than the resistance torque of the swing arm 200 rotating, so that the swing arm 200 can move from the extended position to the retracted position or from the retracted position to the extended position, thereby improving the cleaning range of the cleaning member.

[0100] For example, before the swing arm 200 swings from the stowed position to the extended position and the axis of the second elastic member 400 intersects with the axis of the first rotating shaft 110, the torque generated by the friction wheel 321 and the second engaging surface 122 on the swing arm 200 is greater than the sum of the torque generated by the second elastic member 400 on the swing arm 200 and the torque generated by the initial resistance of the swing arm 200, so that the swing arm 200 can swing. Similarly, before the swing arm 200 swings from the extended position to the stowed position and the axis of the second elastic member 400 intersects with the axis of the first rotating shaft 110, the torque generated by the friction wheel 321 and the first engaging surface 121 on the swing arm 200 is greater than the sum of the torque generated by the second elastic member 400 on the swing arm 200 and the torque generated by the initial resistance of the swing arm 200, so that the swing arm 200 can swing from the extended position to the stowed position. Wherein, the torque generated by the initial resistance is the torque required for the swing arm 200 to overcome when neither the torque generated by the second elastic member 400 nor the torque generated by the friction wheel 321 exists, i.e. the torque generated by the friction between the swing arm 200 and the fixed frame 100.

[0101] In some embodiments, the second elastic member 400 is a spring, and the spring has two ears at both ends, and the two ears are respectively sleeved on the mounting rod of the swing arm 200 and the fixed frame 100. Further, the mounting rod has a limiting structure to avoid the spring from being separated from the swing arm 200 or the fixed frame 100.

[0102] Please refer to Figure 7 and Figure 8 In an embodiment, the fixed frame 100 is provided with a first limiting portion 130, and the swing arm 200 is provided with a second limiting portion 210, and the first limiting portion 130 cooperates with the second limiting portion 210 to limit the movement stroke of the swing arm 200 between the stowed position and the extended position. By cooperating the first limiting portion 130 and the second limiting portion 210, the swing position of the swing arm 200 is limited to avoid excessive rotation of the swing arm 200 under the action of the second elastic member 400.

[0103] Please refer to Figure 8 In an embodiment, the second limiting portion 210 is a limiting slot, and the first limiting portion 130 is a limiting block inserted into the limiting slot, and the limiting block moves to the two ends of the limiting slot closed respectively when the swing arm 200 is in the stowed position and the extended position. The cooperation of the limiting slot and the limiting block is stable and reliable, the implementation is simple, the cost is low, and the cost of the cleaning device is reduced.

[0104] In an embodiment, the limiting block is an arc-shaped block, and the center of the arc-shaped block is on the axis of the first rotating shaft 110; there is a gap between the limiting block and the first rotating shaft 110, in other words, the first rotating shaft 110 is not in contact with the limiting block, and the distance between the first rotating shaft 110 and the limiting block is small, which can not only avoid friction between the limiting block and the first rotating shaft 110, but also reduce the volume of the limiting block and the limiting groove, which is conducive to the miniaturization and integration of the cleaning assembly.

[0105] The limiting groove is an arc-shaped groove, and the arc-shaped limiting block can increase the contact area between the limiting block and the arc-shaped limiting groove, thereby improving the stability of the limiting, reducing the probability of damage of the limiting block and the limiting groove, and prolonging the service life. The center of the arc-shaped block is on the axis of the first rotating shaft 110, which can ensure that the edge of the arc-shaped block abuts against the edge of the arc-shaped groove, and reduce the pressure between the arc-shaped block and the arc-shaped groove.

[0106] Please refer to Figure 22 and Figure 23 In some embodiments, the fixed frame 100 is provided with an insertion part 140, the swing arm 200 is provided with a slot 230 matched with the insertion part 140, and the insertion part 140 is inserted into the slot 230; wherein the first rotating shaft 110 is arranged at the insertion part 140, and the axis of the first rotating shaft 110 coincides with the axis of the insertion part 140. When the swing arm 200 and the fixed frame 100 relatively sway, a shearing force is generated on the first rotating shaft 110. Because the outer diameter of the first rotating shaft 110 is limited due to the volume limitation of the cleaning assembly, the first rotating shaft 110 can only bear a limited shearing force. By arranging the insertion part 140 and the slot 230, the swing of the swing arm 200 and the fixed frame 100 in the direction perpendicular to the axis of the first rotating shaft 110 is limited, which effectively reduces the shearing force on the first rotating shaft 110, reduces the risk of damage of the first rotating shaft 110 in the radial direction, prolongs the service life of the first rotating shaft 110, and improves the durability of the cleaning assembly and the cleaning equipment.

[0107] In some embodiments, the cross section of the insertion part 140 in the radial direction of the insertion part 140 is circular, and the slot 230 is a circular slot. The insertion part 140 with a circular cross section and the circular slot 230 can relatively rotate, and the slot 230 can support the insertion part 140 in the radial direction, which effectively protects the first rotating shaft 110.

[0108] In some embodiments, the insertion portion 140 has a circular cross-section along a radial direction of the insertion portion 140, and the insertion slot 230 is an arc-shaped slot, and the angle of the arc-shaped insertion slot 230 is greater than 180°. The arc-shaped insertion slot 230 with an angle greater than 180° limits and supports the insertion portion 140, avoids relative movement of the insertion portion 140 and the insertion slot 230 along the radial direction of the insertion portion 140, and guarantees support for the first rotating shaft 110. The angle of the insertion slot 230 can be any angle between 180° and 360°, for example, 180°, 200°, 270°, 300°, etc.

[0109] Referring to Figure 23 Further, the insertion slot 230 is in communication with the limiting slot, the first limiting portion 130 is inserted into the limiting slot, and the insertion slot 230 in communication with the limiting slot can minimize the distance between the first limiting portion 130 and the first rotating shaft 110, thereby reducing the volume of the limiting slot, facilitating the design and layout of the space close to the first rotating shaft 110, and improving the integration of the cleaning assembly.

[0110] Referring to Figure 22 In some embodiments, the fixed frame 100 is provided with a rotating shaft mounting portion 150 and a first mounting member 160, the first rotating shaft 110 penetrates the rotating shaft mounting portion 150, the first mounting member 160 abuts against the rotating shaft mounting portion 150, and one end of the second elastic member 400 is connected to the first mounting member 160. Due to the volume limitation of the cleaning assembly, the outer diameter of the first mounting member 160 for mounting the second elastic member 400 is limited, and thus the first mounting member 160 and the fixed frame 100 connection or the first mounting member 160 body are easily damaged. The abutment of the rotating shaft mounting portion 150 and the first mounting member 160 supports the first mounting member 160 by the rotating shaft mounting portion 150, improves the carrying capacity of the first mounting member 160, reduces the risk of damage to the first mounting member 160 and the fixed frame 100 connection or the first mounting member 160 body, and improves the durability of the first mounting member 160.

[0111] Referring to Figure 22 In some embodiments, the first mounting member 160 includes a plug rod 161 and a plug portion 162, the plug rod 161 is plugged with the plug portion 162, the plug portion 162 abuts against the rotating shaft mounting portion 150, and the second elastic member 400 is mounted on the plug rod 161. The plugging of the plug rod 161 and the plug portion 162 facilitates the installation of the plug rod 161 and the second elastic member 400, and facilitates the assembly of the cleaning assembly.

[0112] In some embodiments, the first mounting member 160 is arranged between the first rotating shaft 110 and the caressing surface 120; one end of the second elastic member 400 is connected to the first mounting member 160; the swing arm 200 is provided with a second mounting member 260, which is arranged between the first rotating shaft 110 and the connecting end of the cleaning member; and the other end of the second elastic member 400 is connected to the second mounting member 260. The two ends of the second elastic member 400 are respectively mounted on the first mounting member 160 and the second mounting member 260, which effectively ensures that the second elastic member 400 functions, and ensures that the friction wheel 321 can be separated from the caressing surface 120 when moving from the middle of the caressing surface 120 to the edges of the caressing surface 120.

[0113] Please refer to Figure 23 In some embodiments, the swing arm 200 includes a relatively fixed upper housing 240 and a lower housing 250, and the upper housing 240 and the lower housing 250 enclose a receiving cavity in which a part of the power assembly and a transmission mechanism, such as the first intermediate transmission assembly 323 and the second transmission assembly 330, are mounted.

[0114] In some embodiments, the driving member 310 includes a motor 313 arranged on the upper side of the upper housing 240 of the swing arm 200, which can make full use of the space of the upper housing 240 and facilitate the arrangement of the cleaning assembly. The connecting end of the cleaning member and the friction wheel 321 are respectively located at the two ends of the swing arm 200 in the length direction, the connecting end of the cleaning member is the connection between the swing arm 200 and the cleaning member, and the connecting end of the cleaning member and the friction wheel 321 are arranged at the two ends of the swing arm 200 in the length direction. When the swing arm 200 reaches the extended position, the cleaning member can be farther away from the main body of the cleaning assembly to improve the cleaning range of the cleaning member.

[0115] The motor 313 is arranged between the connecting end of the cleaning member and the friction wheel 321, and the motor 313 is located on the lower side of the main body of the cleaning device when the swing arm 200 is in the extended position. The motor 313 is always located on the lower side of the main body of the cleaning device when the swing arm 200 is in the extended position and the retracted position, which prevents the motor 313 from being exposed and avoids the motor 313 from being damaged by collision, and improves the safety of the cleaning device.

[0116] In some embodiments, the first rotating shaft 110 is located between the friction wheel 321 and the connection end of the cleaning component. The first rotating shaft 110 and the motor 313 are arranged along the width direction of the swing arm 200. The width direction of the swing arm 200 is perpendicular to the length direction and the height direction of the swing arm 200. The line connecting the axis of the first rotating shaft 110 and the axis of the output shaft of the motor 313 is parallel or substantially parallel to the width direction of the swing arm 200. By making full use of the width space of the swing arm 200, the first rotating shaft 110 can be located close to the edge of the swing arm 200 and / or the fixed frame 100, which makes it easier for the swing arm 200 and the fixed frame 100 to rotate relative to each other.

[0117] Please see Figure 21 and Figure 22 In some embodiments, the mounting bracket 100 includes a top housing 170 and a side housing 180. The top housing 170 is located above the upper housing 240 of the swing arm 200 and has a clearance space near the motor 313 to avoid interference between the motor 313 and the mounting bracket 100. The friction wheel 321 is located below the top housing 170, which protects the friction wheel 321 and reduces the risk of it being bumped or knocked. The friction wheel 321 rotates during the use of the cleaning assembly. The protection provided by the top housing 170 reduces the risk of debris entering the friction wheel 321 and minimizes the possibility of debris restricting its movement. The side housing 180 is located on one side of the top housing 170 and extends toward the swing arm 200. The mating surface 120 is provided on the wall surface of the side housing 180 facing the friction wheel 321. The side housing 180 can protect the friction wheel 321 on one hand, and on the other hand, the mating surface 120 on the side housing 180 abuts against the friction wheel 321, causing the friction wheel 321 to roll along the mating surface 120, thereby driving the swing arm 200 to rotate relative to the fixed frame 100.

[0118] Please see Figure 22 and Figure 23In some embodiments, the fixed frame 100 is provided with a first limiting part 130, which is arranged on the side of the first rotating shaft 110 close to the friction wheel 321; the swing arm 200 is provided with a second limiting part 210, which is arranged on the side of the first rotating shaft 110 away from the cleaning member; the first limiting part 130 cooperates with the second limiting part 210 to limit the movement of the swing arm 200 between the stowed position and the extended position. The swing arm 200 is internally provided with a cavity for mounting part components of the power assembly 300. By arranging the first limiting part 130 and the second limiting part 210 on the side of the first rotating shaft 110 close to the friction wheel 321 and away from the cleaning member, the space of the connecting region of the swing arm 200 and the fixed frame 100 can be fully utilized without occupying the internal space of the swing arm 200, thereby facilitating the installation of part components of the power assembly 300, reducing the volume of the swing arm 200, and reducing the volume of the cleaning assembly.

[0119] In some embodiments, the first limiting part 130 is arranged on the lower part of the fixed frame 100, and the second limiting part 210 is arranged on the upper part of the swing arm 200, for example, the second limiting part 210 is arranged on the upper part of the upper housing 240 of the swing arm 200. By arranging the first limiting part 130 and the second limiting part 210 on the external space of the swing arm 200, the internal space of the swing arm 200 is avoided to be occupied, part components of the power assembly 300 are facilitated to be installed in the cavity of the swing arm 200, the integration of the cleaning assembly is improved, and the volume of the cleaning assembly is reduced.

[0120] Please refer to Figure 8 and Figure 9 In an embodiment, the driving member 310 includes a rotating output shaft 311 and a driving output gear 312, the driving output gear 312 is fixed to the rotating output shaft 311; the second transmission assembly 330 includes a first rotary transmission assembly 331 and a second rotary transmission assembly 332, the input end of the first rotary transmission assembly 331 is connected to the driving output gear 312, and the output end of the second rotary transmission assembly 332 is connected to the cleaning member; wherein the second rotary transmission assembly 332 includes two input ends, the input end of one of the second rotary transmission assembly 332 rotates in the same clockwise direction as the output end of the second rotary transmission assembly 332, and the input end of the other rotates in the opposite clockwise direction as the output end of the second rotary transmission assembly 332; the driving output gear 312 changes the rotating direction so that the output end of the first rotary transmission assembly 331 is selectively connected to the two input ends of the second rotary transmission assembly 332.

[0121] During the use of the cleaning assembly, the rotating output shaft 311 of the driving member 310 needs to change the rotating direction to drive the swing arm 200 to move between the retracted position and the extended position, but the cleaning member needs to keep a rotating direction to avoid dust and other contaminants from polluting the cleaned surface, and facilitate the cleaning of dirt. The rotating direction of the driving output gear 312 is consistent with the rotating direction of the rotating output shaft 311. When the driving output gear 312 rotates in different directions, the output end of the first rotating transmission assembly 331 is connected with the two input ends of the second rotating transmission assembly 332 respectively, so that the rotating direction of the cleaning member remains unchanged, and the cleaning effect is ensured.

[0122] The two input ends of the second rotating transmission assembly 332 are a first input end and a second input end. The number of gears from the first input end to the output end is one more or one less than the number of gears from the second input end to the output end, so that the rotating directions of the two input ends to the output end are different.

[0123] Of course, as some optional ways, the two input ends to the output end of the second rotating transmission assembly 332 can also have other different numbers of gears, or other ways, so that the rotating directions of the two input ends to the output end are different.

[0124] Please refer to Figure 8 In an embodiment, the output end of the first rotating transmission assembly 331 is a second gear 3311; the two input ends of the second rotating transmission assembly 332 are a third gear 3321 and a fourth gear 3322 respectively; the second gear 3311 is movably arranged along the axial direction and coaxially arranged between the third gear 3321 and the fourth gear 3322, the side of the third gear 3321 and the fourth gear 3322 facing the second gear 3311 is provided with a ratchet, and the ratchet of the second gear 3311 is selectively engaged with the ratchet of the third gear 3321 or the ratchet of the fourth gear 3322 by changing the rotating direction of the driving output gear 312. The second gear 3311 is movable along the axial direction, and the ratchet of the second gear 3311 is not engaged with the ratchet of the third gear 3321 and the ratchet of the fourth gear 3322 at the same time, so that changing the rotating direction of the second gear 3311 can make the ratchet of the second gear 3311 engaged with the ratchet of the third gear 3321 and the ratchet of the fourth gear 3322 respectively, so that the output end of the first rotating transmission assembly 331 is connected with the two input ends of the second rotating transmission assembly 332 respectively, and the rotating direction of the cleaning member remains unchanged when the rotating direction of the rotating output shaft 311 changes.

[0125] Please refer to Figure 9 and Figure 10In one embodiment, the second rotation transmission assembly 332 includes a third gear 3321, a fourth gear 3322, a fifth gear 3324, and a sixth gear 3325, wherein the sixth gear 3325 is fixed to the cleaning member or is fixed to the cleaning member after engaging with the second rotation transmission gear 3323, so as to drive the cleaning member to rotate by the rotation of the sixth gear 3325. The third gear 3321 directly engages with the sixth gear 3325, the fourth gear 3322 engages with the fifth gear 3324, and the fifth gear 3324 engages with the sixth gear 3325. The third gear 3321 serves as an input end of the second rotation transmission assembly 332, and the fourth gear 3322 and the fifth gear 3324 serve as another input end of the second rotation transmission assembly 332. Thus, the rotation direction of one input end of the second rotation transmission assembly 332 is the same as that of the output end, and the rotation direction of the other input end is opposite to that of the output end. Therefore, when the rotation output shaft 311 changes direction, the rotation direction of the cleaning member does not change.

[0126] In another embodiment, the output end of the first rotation transmission assembly 331 is a second gear 3311, and the two input ends of the second rotation transmission assembly 332 are a third gear 3321 and a fourth gear 3322, respectively. The second gear 3311 is connected to the third gear 3321 and the fourth gear 3322 through a one-way bearing, respectively, so that when the second gear 3311 rotates in different directions, the second gear 3311 drives the third gear 3321 and the fourth gear 3322 to rotate, respectively.

[0127] For example, the second gear 3311, the third gear 3321, and the fourth gear 3322 are respectively provided with shafts. The shaft of the second gear 3311 is connected to the shaft of the third gear 3321 through a one-way bearing, and the shaft of the second gear 3311 is connected to the shaft of the fourth gear 3322 through another one-way bearing. Thus, when the second gear 3311 rotates in different directions, the second gear 3311 drives the second rotation transmission assembly 332 through the two input ends of the second rotation transmission assembly 332, respectively.

[0128] In one embodiment, the first rotation transmission assembly 331 includes one or more first rotation transmission gears 3312, so as to drive the second gear 3311 to rotate by the driving member 310 through the first rotation transmission assembly 331.

[0129] The second aspect of the present application provides a cleaning device, comprising a device body and the cleaning assembly of any one of the above, and the fixing frame 100 of the cleaning assembly is mounted on the device body. The cleaning device is configured to clean a surface to be cleaned, and the cleaning device can be a vacuum cleaning robot, a mopping / brushing robot, a window climbing robot, etc., and the cleaning device can have functions of moving, sweeping, and dusting, etc. The cleaning device comprises a device body, a cleaning module, and a cleaning assembly, and the cleaning module and the cleaning assembly are mounted on the device body to clean the surface to be cleaned. The cleaning device can also have other components or modules, such as a control system, a traveling system, etc., please refer to the existing cleaning device, and the present application will not be repeated here.

[0130] The cleaning assembly of the cleaning device of the present application comprises a fixing frame 100 and a swing arm 200 that can rotate relative to each other, and the fixing frame 100 and the swing arm 200 are driven to rotate relative to each other by a power assembly 300, so that the cleaning range of the cleaning member is changed. When cleaning a general surface to be cleaned, the cleaning assembly is in a normal cleaning mode, and the swing arm 200 is in a stowed position; when cleaning a special area such as a corner, the cleaning assembly is in a special cleaning mode, and the swing arm 200 is in an extended position, thereby cleaning the area that cannot be covered by the cleaning member in the normal cleaning mode, increasing the cleaning range, reducing the cleaning blind area, improving the cleaning effect, and effectively improving the user satisfaction. Therefore, the present application effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

[0131] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought of the present application should be covered by the claims of the present application.

Claims

1. A cleaning component, characterized in that, include: A mounting bracket is configured to connect to the main body of the cleaning equipment, and the mounting bracket is provided with a first rotating shaft and a first limiting part; A swing arm is rotatably connected to the fixed frame via the first rotating shaft. The swing arm is provided with a second limiting part and a rotatable cleaning component. A power assembly drives the cleaning component to rotate, and the power assembly drives the swing arm to rotate relative to the fixed frame, so as to move the swing arm between a retracted position and an extended position. The first limiting part cooperates with the second limiting part to restrict the movement of the swing arm between the retracted position and the extended position.

2. The cleaning component according to claim 1, characterized in that, The second limiting part is a limiting groove, and the first limiting part is a limiting block inserted into the limiting groove. When the swing arm is in the retracted position and the extended position, the limiting block moves to the two closed ends of the limiting groove, respectively.

3. The cleaning component according to claim 2, characterized in that, The limiting block is an arc-shaped block, and the center of the arc-shaped block is on the axis of the first rotating shaft; there is a gap between the limiting block and the first rotating shaft; the limiting groove is an arc-shaped groove.

4. The cleaning component according to claim 2, characterized in that, The fixed frame is provided with an insertion part, and the swing arm is provided with a slot adapted to the insertion part, and the insertion part is inserted into the slot; The first rotating shaft is disposed at the insertion part, and the axis of the first rotating shaft coincides with the axis of the insertion part.

5. The cleaning component according to claim 4, characterized in that, The insertion part has a circular cross-section along its radial direction, and the slot is a circular groove; or, the slot is an arc-shaped groove, and the angle of the slot is greater than 180°.

6. The cleaning component according to claim 4, characterized in that, The slot is connected to the limiting slot.

7. The cleaning component according to claim 1, characterized in that, The power assembly includes: Drive components; The first transmission assembly drives the swing arm to rotate relative to the fixed frame under the drive of the driving member; The second transmission assembly drives the cleaning component to rotate under the drive of the driving component.

8. The cleaning component according to claim 7, characterized in that, The drive unit includes a rotating output shaft, which rotates in a first clockwise direction in a normal cleaning mode and in a second clockwise direction in a special cleaning mode. When the rotation direction of the output shaft changes from the first clockwise direction to the second clockwise direction, the cleaning component switches from the regular cleaning mode to the special cleaning mode. When the rotation direction of the output shaft changes from the second clockwise direction to the first clockwise direction, the cleaning component switches from the special cleaning mode to the regular cleaning mode.

9. The cleaning component according to claim 7, characterized in that, The output end of the first transmission component includes a friction wheel, and the wall of the fixed frame is provided with a mating surface. When the friction wheel abuts against the mating surface, there is a force between the friction wheel and the mating surface, so that the friction wheel rolls along the mating surface. When the swing arm is in the retracted position and the extended position, the friction wheel does not abut against the mating surface.

10. A cleaning device, characterized in that, It includes a device body and a cleaning component as described in any one of claims 1 to 9, wherein the mounting bracket of the cleaning component is mounted on the device body.

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