Cleaning assembly and cleaning equipment

Abstract

The utility model 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 is arranged on the fixing frame; the swinging arm is rotationally connected with the fixing frame through the first rotating shaft, and a rotatable cleaning piece is arranged on the swinging arm; the power assembly drives the cleaning part to rotate, and the power assembly drives the swing arm to rotate relative to the fixing frame so as to drive the swing arm to move between the retracting position and the stretching position; the first rotating shaft is independent of the power assembly. 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. The first rotating shaft is independent of the power assembly, so that the arrangement flexibility and compactness of the power assembly are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cleaning assembly technical field, concretely relates to a cleaning assembly and cleaning equipment. BACKGROUND

[0002] The cleaning equipment includes a sweeping robot, a mopping robot, a sweeping and mopping integrated robot, a floor washing machine and the like. With the improvement of living standards, the cleaning equipment is increasingly widely applied in families, and the requirements following it are also increasingly high. The existing cleaning equipment cannot cover the surface to be cleaned when cleaning the special area such as the corner of a room due to the volume of the cleaning equipment itself, and there is a cleaning blind area, which leads to incomplete cleaning and affects the cleaning effect and use experience. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model provides a cleaning assembly and cleaning equipment to improve the problems such as a large cleaning blind area and incomplete cleaning of the existing cleaning equipment when cleaning the special area such as the corner of a room.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a cleaning assembly in a first aspect, the cleaning assembly includes 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 equipment, and a first rotating shaft is arranged on the fixing frame; the swing arm is rotatably connected with the fixing frame through the first rotating shaft, and a rotatable cleaning piece is arranged on the swing arm; the power assembly drives the cleaning piece 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 the stowed position and the extended position; wherein the first rotating shaft is arranged independently of the power assembly.

[0005] The cleaning assembly of the application includes a fixing frame and a swing arm that can rotate relative to each other, and the fixing frame and the swing arm are driven to rotate relative to each other by the power assembly, so that the cleaning range of the cleaning piece changes. When cleaning the ordinary surface to be cleaned, the cleaning assembly is in a normal cleaning mode, and the swing arm is in the stowed position; when cleaning the special area such as the corner of a room, the cleaning assembly is in a special cleaning mode, and the swing arm is in the extended position, thereby cleaning the area that cannot be covered by the cleaning piece in the normal cleaning mode, increasing the cleaning range, reducing the cleaning blind area, improving the cleaning effect and effectively improving the user satisfaction.

[0006] When the swing arm is swung and the cleaning element is rotated by using a power assembly, the transmission system involved in the power assembly is relatively complex, and the swing arm has very limited internal space. The arrangement flexibility and compactness of the power assembly are very critical to space saving and transmission stability. By making the first rotating shaft independent of the power assembly, the arrangement position of the first rotating shaft can be prevented from affecting the arrangement of the power assembly, the arrangement flexibility and compactness of the power assembly are improved, and the design difficulty of the transmission assembly is reduced while ensuring space utilization and transmission stability. If the first rotating shaft uses the transmission shaft of the power assembly, the outer periphery of the first rotating shaft needs to be arranged with gears and other transmission elements, thereby increasing the space for setting the first rotating shaft and increasing the distance between the first rotating shaft and the fixed frame and the edge of the swing arm. By making the first rotating shaft independent of the power assembly, the space required for arranging the first rotating shaft can be reduced, the distance between the first rotating shaft and the fixed frame and / or the edge of the swing arm can be reduced, and the flexibility of setting the first rotating shaft is improved. When the first rotating shaft is arranged at the edge of the fixed member and the swing arm, it is more conducive to the relative rotation of the swing arm and the fixed frame, reduces the risk of interference, and facilitates the internal arrangement of the cleaning assembly.

[0007] In an example embodiment of the present application, the power assembly includes a driving member, a first transmission assembly, and a second transmission assembly. The first transmission assembly is driven by the driving member to drive the swing arm to rotate relative to the fixed frame. The second transmission assembly is driven by the driving member to drive the cleaning element to rotate.

[0008] The driving member drives the first transmission assembly to drive the swing arm to rotate relative to the fixed frame, and drives the second transmission assembly to drive the cleaning element to rotate. Two functions of swing arm rotation and cleaning element rotation are realized by one driving member, the utilization rate of the driving member is improved, the number of driving members is reduced, and the cost is reduced. The space of the cleaning assembly is saved, the internal structure design of the cleaning assembly is facilitated, which is conducive to the miniaturization and integration of the cleaning assembly and the cleaning device, and thus is conducive to reducing the cleaning blind area.

[0009] In an example embodiment of the present application, the driving member includes a rotating output shaft. In a normal cleaning mode, the rotating output shaft rotates in a first clockwise direction. In a special cleaning mode, the rotating output shaft rotates in a second clockwise direction. When the rotating direction of the rotating output shaft 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. When the rotating direction of the rotating output shaft 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.

[0010] The cleaning mode of the cleaning assembly is changed by changing the rotating direction of the rotating output shaft, which is convenient to control, stable, controllable, convenient to switch, and beneficial to realize the switching of the conventional cleaning mode and the special cleaning mode.

[0011] In an example embodiment of the present application, the cleaning member rotates in the same clockwise direction in the special cleaning mode and the conventional cleaning mode.

[0012] Changing the rotating direction of the cleaning member may cause the cleaned dust, particulate matter, etc. to pollute the cleaning surface again, and may also cause dust to be raised, etc. On the other hand, it may not be possible to drive the dust and other pollutants to the preset area of the cleaning assembly, resulting in the situation that the dirt cannot be cleaned. The cleaning member keeps rotating in the same clockwise direction, which is convenient for cleaning dust, particulate matter and other garbage. The cleaning member has consistency in cleaning in the conventional 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.

[0013] In an example embodiment of the present application, the fixed frame is provided with a first limiting portion; the swing arm is provided with a second limiting portion; the first limiting portion cooperates with the second limiting portion to limit the movement of the swing arm between the stowed position and the extended position.

[0014] By cooperating the first limiting portion and the second limiting portion, the swing position of the swing arm is limited, so that the swing arm is prevented from being excessively rotated under the action of the driving member or the second elastic member, etc.

[0015] In an example embodiment of the present application, the second limiting portion is a limiting slot, the first limiting portion is a limiting block inserted into the limiting slot, and the limiting block moves to the two ends closed by the limiting slot when the swing arm is in the stowed position and the extended position.

[0016] 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.

[0017] 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 slot is an arc-shaped slot.

[0018] 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 swing arm rotates around the first rotating shaft, and the center of the arc-shaped block is on the axis of the first rotating shaft, 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. The gap between the limiting block and the first rotating shaft can avoid wear between the limiting block and the first rotating shaft during rotation, and the approach of the limiting block to the first rotating shaft can reduce the volume of the limiting groove, improve the integration of the cleaning assembly, and reduce the volume of the cleaning assembly.

[0019] In an example embodiment of the present application, the fixed frame is provided with an insertion part, the swing arm is provided with an insertion slot matched with the insertion part, and the insertion part is inserted into the insertion slot. The first rotating shaft is arranged at the insertion part, and the axis of the first rotating shaft coincides with the axis of the insertion part.

[0020] When the swing arm and the fixed frame relatively sway, shear force is generated on the first rotating shaft. Due to the volume limitation of the cleaning assembly, the outer diameter of the first rotating shaft is limited, and the shear force that can be borne is limited. By arranging the insertion part and the insertion slot, the swing of the swing arm and the fixed frame in the direction perpendicular to the axis of the first rotating shaft is limited, the shear force on the first rotating shaft is effectively reduced, the risk of radial damage of the first rotating shaft is reduced, the service life of the first rotating shaft is improved, and the durability of the cleaning assembly and the cleaning equipment is improved.

[0021] In an example embodiment of the present application, the cross section of the insertion part in the radial direction of the insertion part is circular, and the insertion slot is a circular slot. Alternatively, the insertion slot is an arc-shaped slot, and the angle of the insertion slot is greater than 180°.

[0022] The insertion part with a circular cross section and the circular or arc-shaped insertion slot can relatively rotate, and the insertion slot can provide support in the radial direction of the insertion part, effectively protecting the first rotating shaft.

[0023] In an example embodiment of the present application, the output end of the first transmission assembly includes a friction wheel, and the wall surface of the fixed frame is provided with a matching surface. When the friction wheel abuts against the matching surface, an acting force exists between the friction wheel and the matching surface, so that the friction wheel rolls along the matching surface.

[0024] The friction wheel is in contact with the abutting surface when rotating, so that the friction wheel can roll along the abutting surface, thereby driving the swing arm and the fixed frame to rotate relative to the first rotation axis, realizing the switching of the swing arm between the extended position and the retracted position. The first rotation axis is different from the driving mechanism of the friction wheel, and the first rotation axis can be arranged at the edge position of the fixed frame and / or the swing arm, avoiding the interference of the fixed frame on the rotation position of the swing arm, and reducing the cleaning blind area of the cleaning element.

[0025] In an example embodiment of the present application, the swing arm is in contact with the abutting surface when the swing arm is in the retracted position and the extended position.

[0026] When the swing arm is kept in the retracted position or the extended position, the friction wheel is always kept rotating, and by avoiding the swing arm from being in contact with the abutting surface when the swing arm is in the retracted position and the extended position, the friction between the swing arm and the abutting surface is avoided when the swing arm is kept in the extended position and the retracted position, the wear of the friction wheel and the abutting surface is reduced, the service life of the friction wheel and the abutting surface is prolonged, and the durability of the cleaning device is improved.

[0027] In an example embodiment of the present application, the cleaning assembly comprises a second elastic element, one end of the second elastic element is arranged on the swing arm, and the other end of the second elastic element is arranged on the fixed frame; wherein when the swing arm is in the retracted position, the second elastic element applies a force to the swing arm in the third clock direction, so that the friction wheel is separated from the abutting surface, and the third clock direction is the rotation direction of the swing arm from the extended position to the retracted position; when the swing arm is in the extended position, the second elastic element applies a force to the swing arm in the fourth clock direction, so that the friction wheel is separated from the abutting surface, and the fourth clock direction is the rotation direction of the swing arm from the retracted position to the extended position.

[0028] When the cleaning assembly is moved from the stowed position to the extended position or from the extended position to the stowed position, the force between the friction wheel and the accommodating surface makes the friction wheel roll along the accommodating surface, when the friction wheel moves to the end of the accommodating surface, the friction wheel is partially in contact with the accommodating surface, the force between the friction wheel and the accommodating surface is not enough to make the friction wheel completely separate from the accommodating surface, that is, there is always a certain force between the friction wheel and the end of the accommodating surface, which may cause the swing arm to vibrate, the friction wheel to wear, the accommodating surface to wear and other problems. The force applied to the swing arm by the second elastic member makes the friction wheel completely separate from the accommodating surface, thereby reducing the vibration of the swing arm, avoiding the wear of the friction wheel and the accommodating surface, and prolonging the service life of the friction wheel and the accommodating surface. At the same time, the second elastic member continuously applies a force to the swing arm, reduces the swing of the swing arm during the cleaning process of the cleaning member, and avoids the swing arm from being stowed or extended. During the cleaning process of the cleaning member, even if the cleaning assembly is pressed and bumped against the wall, causing the swing arm to rotate towards the stowed position, the cleaning assembly will be returned to the extended position in time under the action of the second elastic member.

[0029] In an example embodiment of the present application, when the swing arm switches between the stowed position and the extended position, the movement path of the force line of the force applied to the swing arm by the second elastic member passes through the axis of the first rotating shaft.

[0030] The second elastic member can be a spring, a pull rope or the like. After the force line of the force applied to the swing arm by the second elastic member passes through the axis of the swing arm relative to the fixed frame, the torque of the force applied to the swing arm by the second elastic member changes in direction, thereby changing the torque of the force applied to the swing arm by the second elastic member from a resistance torque to a power torque, effectively ensuring that the friction wheel can separate from the accommodating surface when the friction wheel moves to the edge of the accommodating surface.

[0031] In an example embodiment of the present application, the accommodating surface includes a first accommodating surface and a second accommodating surface, and the first end of the projection of the first accommodating surface exceeds the first end of the projection of the second accommodating surface in the axial direction of the friction wheel, and the second end of the projection of the second accommodating surface exceeds the second end of the projection of the first accommodating surface, the first end and the second end being opposite ends; the first transmission assembly includes an outer swing transmission assembly, the outer swing transmission assembly drives the friction wheel to move in the axial direction of the friction wheel, so that the friction wheel abuts against the first accommodating surface and the second accommodating surface respectively.

[0032] The first and second engaging surfaces are arranged along the axial direction of the friction wheel, and the friction wheel is in abutment with the first and second engaging surfaces respectively through movement along the axial direction, and then the position of the swing arm is switched through rotation of the friction wheel in different directions. The first end of the first engaging surface is beyond the first end of the second engaging surface, and the second end of the second engaging surface is beyond the second end of the first engaging surface. The first and second ends are the opposite ends of the engaging surfaces respectively. When the swing arm is kept in the extended position or the retracted position, the friction wheel is located at the first end of the second engaging surface or the second end of the first engaging surface, that is, the friction wheel is not in abutment with the second and first engaging surfaces. When the position needs to be switched, the friction wheel is controlled to move along the axial direction, so that the friction wheel moves from the first end of the second engaging surface to the position in abutment with the first engaging surface or moves from the second end of the first engaging surface to the position in abutment with the second engaging surface. Then the friction wheel moves relative to the first or second engaging surface, and drives the swing arm to move.

[0033] In an example embodiment of the present application, the outer swing transmission assembly includes an axle, a first stop and a second stop. The axle is provided with a helical tooth groove along the axial direction of the axle, and the friction wheel is provided with a tooth matched with the tooth groove; the first stop is arranged in and / or outside the tooth groove; the second stop is arranged in and / or outside the tooth groove; wherein the tooth moves along the tooth groove to make the friction wheel move along the axial direction of the axle; the first stop and the second stop limit the stroke of the friction wheel moving along the axial direction of the axle.

[0034] The length of the tooth groove along the axial direction of the axle is positively correlated with the required stroke of the friction wheel. The tooth groove is arranged on the axle, and the axial height of the friction wheel can be selected to be small, thereby reducing the space occupation of the friction wheel, effectively reducing the volume of the cleaning assembly, and facilitating the internal space layout of the cleaning assembly. The tooth and the tooth groove are matched, so that the friction wheel rotates relative to the axle, and then the friction wheel moves along the axial direction of the friction wheel, adjusts the relative position of the friction wheel and the first and second engaging surfaces, and makes the friction wheel move between the first and second engaging surfaces. When the friction wheel moves to the end of the axle limited by the first or second stop, the rotation of the axle drives the synchronous rotation of the friction wheel. The force between the friction wheel and the first or second engaging surface makes the friction wheel roll along the first or second engaging surface, drives the swing arm to move relative to the fixed frame, and completes the switching of the swing arm between the retracted position and the extended position.

[0035] In an example embodiment of the present application, the first and second stops are arranged at the two ends of the tooth groove, and the first and second stops limit the movement of the tooth along the tooth groove, and then limit the stroke of the friction wheel moving along the axial direction of the axle.

[0036] The first stop and the second stop are arranged at both ends of the gear slot to block the gear slot, so that the relative rotation between the friction wheel and the wheel shaft is avoided when the friction wheel reaches the limit position, and synchronous rotation of the friction wheel and the wheel shaft is ensured.

[0037] In an example embodiment of the present application, the fixing frame is provided with a rotating shaft mounting portion and a first mounting member. The first rotating shaft penetrates the rotating shaft mounting portion. The first mounting member is in abutment with the rotating shaft mounting portion. One end of the second elastic member is connected to the first mounting member.

[0038] Due to the volume limitation of the cleaning assembly, the outer diameter of the first mounting member for mounting the second elastic member is limited, so that the first mounting member and the fixing frame connection or the first mounting member body are easily damaged. The abutment of the rotating shaft mounting portion and the first mounting member supports the first mounting member, improves the carrying capacity of the first mounting member, reduces the risk of damage to the first mounting member and the fixing frame connection or the first mounting member body, and improves the durability of the first mounting member.

[0039] In an example embodiment of the present application, the first mounting member includes a plug rod and a plug portion. The plug rod is plugged with the plug portion. The plug portion is in abutment with the rotating shaft mounting portion. The second elastic member is mounted on the plug rod.

[0040] The plug rod and the plug portion are plugged to facilitate the installation of the plug rod and the second elastic member, and facilitate the assembly of the cleaning assembly.

[0041] In an example embodiment of the present application, the fixing frame is provided with a first mounting member. The first mounting member is arranged between the first rotating shaft and the concave surface. One end of the second elastic member is connected to the first mounting member. The swing arm is provided with a second mounting member. The second mounting member is arranged between the first rotating shaft and the connecting end of the cleaning member. The other end of the second elastic member is connected to the second mounting member.

[0042] The two ends of the second elastic member are respectively mounted on the first mounting member and the second mounting member, effectively ensuring that the second elastic member functions, and ensuring that the friction wheel can be separated from the concave surface when moving from the middle of the concave surface to the edges of the concave surface.

[0043] In an example embodiment of the present application, the first transmission assembly includes a first intermediate transmission assembly. The input end of the first intermediate transmission assembly is connected with the driving member. The output end of the first intermediate transmission assembly is connected with the wheel shaft. The first transmission assembly drives the wheel shaft to rotate by driving the driving member.

[0044] The first transmission assembly connects the driving member and the wheel shaft, so that the driving member drives the wheel shaft to rotate, drives the friction wheel to move, and drives the swing arm to swing, so as to complete the switching of the swing arm position and the change of the cleaning mode.

[0045] In an example embodiment of the present application, the driving member comprises a rotating output shaft and a driving output gear fixed to the rotating output shaft; the wheel shaft is provided with an outer swing output gear; the first intermediate transmission assembly comprises a plurality of first gears arranged in sequence along the transmission direction, adjacent first gears are engaged and / or fixed; wherein the first gear at the input end of the first intermediate transmission assembly is engaged with the driving output gear; the first gear at the output end of the first transmission assembly is engaged with the outer swing output gear.

[0046] The first transmission assembly completes transmission through direct engagement of adjacent first gears or coaxial fixation of adjacent first gears, and transmits the torque output by the rotating output shaft via the driving output gear to the wheel shaft, thereby driving the friction wheel to move axially and rotate circumferentially.

[0047] The driving member comprises a motor, which is arranged on the upper side of the upper shell of the swing arm; the connection end of the friction wheel and the cleaning member are respectively located at both ends of the swing arm in the length direction, and the motor is arranged between the connection end of the friction wheel and the cleaning member; when the swing arm is in the extended position, the motor is located on the lower side of the main body of the cleaning device.

[0048] The motor is arranged on the upper side of the upper shell of the swing arm, which can fully utilize the space of the upper shell and facilitate the arrangement of the cleaning assembly. The connection end of the cleaning member is the connection between the swing arm and the cleaning member, and the connection end of the friction wheel and the cleaning member is arranged at both ends of the swing arm in the length direction. When the swing arm 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.

[0049] In an example embodiment of the present application, the first rotating shaft is located between the connection end of the friction wheel and the cleaning member; the first rotating shaft and the motor are arranged along the width direction of the swing arm.

[0050] The width direction of the swing arm is perpendicular to the length direction of the swing arm and perpendicular to the height direction of the swing arm, and the line connecting the axis of the first rotating shaft and the axis of the output shaft of the motor is parallel or substantially parallel to the width direction of the swing arm, which fully utilizes the width space of the swing arm. The first rotating shaft can be close to the edge of the swing arm and / or the fixing frame, which is more convenient for the relative rotation of the swing arm and the fixing frame.

[0051] In an example embodiment of the present application, the fixing frame comprises a top shell and a side shell. The top shell is located above the upper shell of the swing arm, and a space is formed near the motor side to avoid the motor. The friction wheel is located below the top shell. The side shell is located on one side of the top shell and extends towards the swing arm. The accommodating surface is arranged on the wall surface of the side shell facing the friction wheel.

[0052] The space can prevent the motor from interfering with the fixing frame. The friction wheel is located below the top shell, and the top shell protects the friction wheel, reducing the risk of collision. The friction wheel rotates during the use of the cleaning assembly. The top shell protects the friction wheel, reducing the risk of foreign matter entering the friction wheel and reducing the risk of foreign matter causing the friction wheel to move.

[0053] In an example embodiment of the present application, a first limiting part is arranged on the fixing frame, and the first limiting part is arranged on one side of the first rotating shaft close to the friction wheel. A second limiting part is arranged on the swing arm, and the second limiting part is arranged on one side of the first rotating shaft away from the cleaning element. The first limiting part and the second limiting part cooperate to limit the movement of the swing arm between the retracted position and the extended position.

[0054] The internal accommodating cavity of the swing arm is used to install part of the components of the power assembly. By arranging the first limiting part and the second limiting part on one side of the first rotating shaft close to the friction wheel and away from the cleaning element, the space of the connection area of the swing arm and the fixing frame can be fully utilized without occupying the internal space of the swing arm, thereby facilitating the installation of part of the components of the power assembly, reducing the volume of the swing arm, and reducing the volume of the cleaning assembly.

[0055] In an example embodiment of the present application, the first limiting part is located at the lower part of the fixing frame, and the second limiting part is located at the upper part of the swing arm.

[0056] The second limiting part can be located at the upper part of the upper shell of the swing arm. The first limiting part and the second limiting part are arranged in the external space of the swing arm to avoid occupying the internal space of the swing arm, facilitate the installation of part of the components of the power assembly in the accommodating cavity of the swing arm, improve the integration of the cleaning assembly, and reduce the volume of the cleaning assembly.

[0057] In an example embodiment of the present application, the driving member comprises a rotating output shaft and a driving output gear fixed to the rotating output shaft; the second transmission assembly comprises a first rotary transmission assembly and a second rotary transmission assembly, the input end of the first rotary transmission assembly is connected with the driving output gear, and the output end of the second rotary transmission assembly is connected with the cleaning member; wherein the second rotary transmission assembly comprises two input ends, the input end of one of the second rotary transmission assemblies rotates in the same clockwise direction as the output end of the second rotary transmission assembly, and the input end of the other rotates in the opposite clockwise direction as the output end of the second rotary transmission assembly; the driving output gear changes the rotating direction so that the output end of the first rotary transmission assembly is selectively connected with the two input ends of the second rotary transmission assembly.

[0058] During use of the cleaning assembly, the rotating output shaft of the driving member needs to change the rotating direction to drive the swing arm to move between the retracted position and the extended position, but the cleaning member needs to keep a rotating direction to avoid dust and the like from polluting the cleaned surface and facilitate cleaning of dirt. The rotating direction of the driving output gear is consistent with the rotating direction of the rotating output shaft, and when the driving output gear rotates in different clockwise directions, the output end of the first rotary transmission assembly is connected with the two input ends of the second rotary transmission assembly respectively, thereby keeping the rotating direction of the cleaning member unchanged and ensuring the cleaning effect.

[0059] In an example embodiment of the present application, the output end of the first rotary transmission assembly is a second gear; the two input ends of the second rotary transmission assembly are respectively a third gear and a fourth gear; the second gear is coaxially arranged between the third gear and the fourth gear, and the second gear and the third gear and the second gear and the fourth gear are connected through one-way bearings respectively, and the driving output gear changes the rotating direction so that the second gear selectively drives the third gear or the fourth gear to rotate.

[0060] The second gear and the third gear and the second gear and the fourth gear are connected through one-way bearings respectively, so that when the second gear rotates in different clockwise directions, the second gear drives the third gear and the fourth gear to rotate respectively.

[0061] A cleaning device, characterized in that it comprises a device main body and the cleaning assembly according to any one of the above-mentioned embodiments, and the fixing frame of the cleaning assembly is mounted on the device main body.

[0062] In combination with the prior art, the present application has the following beneficial effects:

[0063] The cleaning assembly of the present application comprises a fixed frame and a swing arm which can rotate relative to each other, and 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 is changed. When cleaning a common surface to be cleaned, the cleaning assembly is in a normal cleaning mode, and the swing arm is in a retracted position; when cleaning a special area such as a corner, the cleaning assembly is in a special cleaning mode, and the swing arm 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.

[0064] When the swing of the swing arm and the self-rotation of the cleaning member are realized by using one power assembly, the transmission system involved in the power assembly is relatively complex, and the internal space of the swing arm is very limited. The arrangement flexibility and compactness of the power assembly are very critical to space saving and transmission stability. By making the first rotating shaft independent of the power assembly, the arrangement position of the first rotating shaft can be avoided to affect the arrangement of the power assembly, the arrangement flexibility and compactness of the power assembly are improved, and then the design difficulty of the transmission assembly is reduced while ensuring space utilization and transmission stability. If the first rotating shaft uses the transmission shaft of the power assembly, the outer periphery of the first rotating shaft needs to be arranged with gears and other transmission members, thereby increasing the space for setting the first rotating shaft and increasing the distance between the first rotating shaft and the edges of the fixed frame and the swing arm. By making the first rotating shaft independent of the power assembly, the space required for arranging the first rotating shaft can be reduced, the distance between the first rotating shaft and the edges of the fixed frame and / or the swing arm can be reduced, and then the flexibility of setting the first rotating shaft is improved, and when the first rotating shaft is arranged at the edges of the fixed member and the swing arm, it is more conducive to the relative rotation of the swing arm and the fixed frame, reduces the risk of interference, and facilitates the internal arrangement of the cleaning assembly. BRIEF DESCRIPTION OF DRAWINGS

[0065] 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 are only 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.

[0066] Figure 1 It is a schematic view of an exemplary cleaning assembly of the present application;

[0067] Figure 2 It is another angle schematic view of an exemplary cleaning assembly of the present application;

[0068] Figure 3 It is a schematic view of a part of a power assembly of an exemplary cleaning assembly of the present application;

[0069] Figure 4A schematic diagram of a first transmission assembly and part of a driving member of the utility model is shown in the figure;

[0070] Figure 5 A schematic diagram of a sectional view of a friction wheel and an outer swing transmission assembly of the utility model is shown in the figure;

[0071] Figure 6 A schematic diagram of a wheel shaft and part of a structure of the utility model is shown in the figure;

[0072] Figure 7 A schematic diagram of a part of a fixed frame of the utility model is shown in the figure;

[0073] Figure 8 A schematic diagram of part of a cleaning assembly of the utility model is shown in the figure;

[0074] Figure 9 A schematic diagram of a second transmission assembly and part of a driving member of the utility model is shown in the figure;

[0075] Figure 10 A schematic diagram of another angle of a second transmission assembly and part of a driving member of the utility model is shown in the figure;

[0076] Figure 11 A schematic diagram of a driving member of the utility model is shown in the figure;

[0077] Figure 12 A schematic diagram of a swing arm of the utility model when being retracted is shown in the figure;

[0078] Figure 13 A schematic diagram of a swing arm of the utility model when being extended from the retracted position is shown in the figure;

[0079] Figure 14 A top view of a swing arm of the utility model when being extended to a position close to the fully extended position is shown in the figure;

[0080] Figure 15 A schematic diagram of the relative position of a friction wheel and a fixed frame of a swing arm of the utility model when being extended to a position close to the fully extended position is shown in the figure;

[0081] Figure 16 A schematic diagram of the relative position of a friction wheel and a fixed frame of a swing arm of the utility model when being extended to the fully extended position is shown in the figure;

[0082] Figure 17 A schematic diagram of the relative position of a friction wheel and a fixed frame of a swing arm of the utility model when being retracted from the extended position is shown in the figure;

[0083] Figure 18 A top view of a swing arm of the utility model when being retracted to a position close to the fully retracted position is shown in the figure;

[0084] Figure 19A schematic view of relative positions of the friction wheel and the fixed frame when the exemplary swinging arm is close to a completely folded position;

[0085] Figure 20 A partial structure perspective view of the exemplary cleaning assembly of the utility model;

[0086] Figure 21 A partial structure schematic view of the exemplary fixed frame of the utility model;

[0087] Figure 22 Another angle schematic view of the partial structure of the exemplary fixed frame of the utility model;

[0088] Figure 23 A partial structure perspective schematic view of the exemplary swinging arm of the utility model.

[0089] Element number explanation:

[0090] 100, fixed frame; 110, first rotation shaft; 120, concave surface; 121, first concave surface; 122, second concave surface; 130, first limiting part; 140, insertion part; 150, rotation shaft mounting part; 160, first mounting piece; 161, insertion rod; 162, insertion part; 170, top shell; 180, side shell;

[0091] 200, swinging arm; 210, second limiting part; 220, elastic piece mounting part; 221, limiting protrusion; 230, insertion slot; 240, upper shell; 250, lower shell; 260, second mounting piece;

[0092] 300, power assembly; 310, driving piece; 311, rotation output shaft; 312, driving output gear; 313, motor;

[0093] 320, first transmission assembly; 321, friction wheel; 3211, check ring; 3212, limiting ring; 322, outer swing transmission assembly; 3221, wheel shaft; 3222, first stop part; 3223, second stop part; 3224, first elastic piece; 3225, outer swing output gear; 3226, cover plate; 323, first intermediate transmission assembly; 3231, first gear;

[0094] 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;

[0095] 400, second elastic piece. DETAILED DESCRIPTION

[0096] The above and other advantages and effects of the present application will become readily apparent to those of ordinary skill in the art from the following description thereof, taken in conjunction with the accompanying drawings. The present application can also be embodied in different forms without departing from the spirit of the present application. The embodiments described in the present specification are merely the preferred embodiments of the present application, and the present application is not limited thereto. It should be understood that the terms used in the present specification are used only to describe particular embodiments and are not intended to limit the scope of the present application. Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains. Any methods, devices, and materials similar or equivalent to those described herein can be used in the practice of the present application.

[0097] When the embodiments give numerical ranges, it should be understood that, unless the present application indicates otherwise, each numerical range has two endpoints and any number between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains and the present application, and any method, device, and material similar or equivalent to those described herein can be used in the practice of the present application.

[0098] It should be understood that the terms such as "upper", "lower", "left", "right", "middle", and "one" used in the present specification are only for the convenience of clear description, and are not intended to limit the scope of the present application, and the change or adjustment of the relative relationship without substantial change of the technical content is also regarded as the scope of the present application.

[0099] The present application provides a cleaning device, which can be a floor mopping robot, a sweeping and mopping integrated machine, or other cleaning robots that meet the requirements.

[0100] 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 cleaning functions. The functional elements and the like constituting the above-mentioned systems in the cleaning device are integrally arranged in the device body. It can be understood that the cleaning device 1 can be a self-moving cleaning device, which is a device that 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.

[0101] The cleaning system of the cleaning device can include a dry cleaning system, the cleaning system including the aforementioned cleaning element capable of interfering with the surface to be cleaned to clean the surface to be cleaned. For example, the cleaning element can include a roller brush module, the cleaning system including a dust box, a dust suction fan, and a roller brush interfering with the ground to bring the dust, particulate matter, and other garbage on the ground to the front of the dust suction port between the roller brush and the dust box, and then sucked into the dust box by the suction gas generated by the dust suction fan.

[0102] The cleaning system can include a side brush module connected to the main body of the device for moving debris and other impurities outside the roller brush area into the roller brush area of the cleaning system. For example, the cleaning device can be a robot vacuum cleaner.

[0103] The cleaning system can include a wet cleaning system, the wet cleaning system including the aforementioned cleaning element capable of interfering with the surface to be cleaned to achieve wet cleaning of the surface to be cleaned. For example, the cleaning device can be a robot mop.

[0104] When cleaning the surface to be cleaned, the conventional wide and flat position can be cleaned more cleanly, but when encountering a corner area such as a wall corner, the cleaning device cannot enter the wall corner area due to its certain size, and the cleaning assembly of the cleaning device cannot clean the wall corner area.

[0105] In view of this, the utility model 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 take the side brush module as an example for detailed description.

[0106] The swing arm 200 of the cleaning assembly has a stowed position and an extended position. When cleaning 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 such as a wall corner, 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 wall corner area to clean the wall corner or the area close to the wall corner, thereby expanding the cleaning area of the cleaning device and improving the comprehensiveness of the cleaning range and the user experience.

[0107] Please refer to Figures 1 to 23 The utility model provides a cleaning assembly, which comprises a fixing frame 100, a swing arm 200, and a power assembly 300.

[0108] The fixing frame 100 is configured to be connected to the main body of the cleaning device. The swing arm 200 is provided with a rotatable cleaning element, and the swing arm 200 is rotationally connected to the fixing frame 100,

[0109] Please refer to Figure 1And Figure 2 In an embodiment, the fixed frame 100 is provided with a first rotating shaft 110. The swing arm 200 is rotatably connected to the fixed frame 100 through the first rotating shaft 110. For example, one end of the first rotating shaft 110 is fixed on the fixed frame 100, and the other end is arranged in the swing arm 200, so that the swing arm 200 can rotate relative to the first rotating shaft 110, and thus the swing arm 200 rotates relative to the fixed frame 100. Alternatively, one end of the first rotating shaft 110 is arranged in the fixed frame 100, and the other end is fixed on the swing arm 200, so that the first rotating shaft 110 can rotate relative to the fixed frame 100, and thus the swing arm 200 rotates relative to the fixed frame 100. Alternatively, one end of the first rotating shaft 110 is arranged in the fixed frame 100, and the other end is arranged in the swing arm 200, so that the first rotating shaft 110 can rotate relative to the fixed frame 100 and the swing arm 200, and thus the swing arm 200 rotates relative to the fixed frame 100.

[0110] Of course, as some optional ways, the first rotating shaft 110 can also be rotatably connected to the fixed frame 100 and / or the swing arm 200 through other ways, so that the swing arm 200 can rotate relative to the fixed frame 100.

[0111] The power assembly 300 drives the cleaning member to rotate, and can drive the swing arm 200 to rotate relative to the fixed frame 100, so as to drive the swing arm 200 to move between the retracted position and the extended position.

[0112] 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 retracted position, and in the special cleaning mode, the swing arm 200 is located in the extended position.

[0113] The cleaning assembly of the present application includes a fixed frame 100 and a swing arm 200 that can rotate relative to each other. The fixed frame 100 and the swing arm 200 are driven to rotate relative to each other by the power assembly 300, so that the cleaning range of the cleaning member changes. When cleaning a normal cleaning surface, 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 corner, the cleaning assembly is in a special cleaning mode, and the swing arm 200 is in an extended position, so as to clean an area that cannot be covered by the cleaning member in the normal cleaning mode, increase the cleaning range, reduce the cleaning blind area, improve the cleaning effect, and effectively improve the user satisfaction.

[0114] Please refer to Figure 3In one 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 to rotate relative to the fixed frame 100 under the driving of the driving member 310; the second transmission assembly 330 drives the cleaning member to rotate under the driving of the driving member 310.

[0115] One driving member 310 realizes the functions of swing arm 200 rotation and cleaning member rotation, improves the utilization rate of the driving member 310, reduces the number of driving member 310 settings, 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.

[0116] 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.

[0117] Please refer to Figure 11 In one 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 with the output shaft of the motor 313, for example, the rotating output shaft 311 is connected with 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 clock direction, and in the special cleaning mode, the rotating output shaft 311 rotates in a second clock direction. One of the first clock direction and the second clock 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 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 311 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. In other words, by changing the rotating direction of the rotating output shaft 311, the movement of the swing arm 200 between the stowed 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, the cleaning mode of the cleaning assembly is changed by changing the rotating direction of the rotating output shaft 311, which is convenient to control and beneficial to realize.

[0118] 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 dirt, particles and hair on the ground. If the cleaning member changes the rotation direction, the cleaned dirt, particles and other garbage will be polluted again, and dust will be raised. The cleaning member of the present application rotates in the same clockwise direction to facilitate the cleaning of dirt, particles and other garbage. The cleaning member has consistency in the normal cleaning mode and the special cleaning mode, which is conducive to the cleaning of dirt, particles and other garbage by the cleaning member and the temporary storage of the cleaned garbage by the cleaning device, thereby improving the cleaning degree.

[0119] In some embodiments, the power assembly 300 is arranged on the swing arm 200. The power assembly 300 has more gears and other components involved in the transmission mechanism, and the transmission connection is relatively complex. The power assembly 300 is arranged on the swing arm 200 as a whole, and the power assembly 300 moves with the swing arm 200 when the swing arm 200 rotates with the fixed frame 100. The power assembly 300 is arranged on the swing arm 200 as a whole, which can make the transmission mechanism swing with the swing arm 200 as a whole, 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.

[0120] Of course, as some optional ways, the power assembly 300 can also be arranged on the swing arm 200, and can also be partially arranged on the swing arm 200 and partially arranged on the fixed frame 100, which can achieve the rotation of the swing arm 200 relative to the fixed frame 100 driven by the power assembly 300.

[0121] In some embodiments, the first rotation 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 internal space of the swing arm 200 is very limited. 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, the first rotation shaft 110 is arranged independently of the first transmission assembly 320, the second transmission assembly 330 and other components of the power assembly 300, which can avoid the influence of the arrangement position of the first rotation shaft 110 on 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.

[0122] In some embodiments, the first rotation axis 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 improving the flexibility and compactness of the arrangement of the transmission mechanism in the swing arm; at the same time, it can also 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, ensure the swing range of the swing arm 200, improve the cleaning range, and improve the user experience.

[0123] Of course, in some embodiments, a gear shaft or a rotation output shaft 311 in the power assembly 300 can also be used as the first rotation axis 110.

[0124] 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 rotate relative to each other around the first rotation axis 110, realizing the switching of the swing arm 200 between the extended position and the retracted position.

[0125] Please refer to Figure 15 In an embodiment, the force between the friction wheel 321 and the matching surface 120 can be friction, for example, the surface of the friction wheel 321 rubs against the surface of the matching surface 120, so that the friction wheel 321 rolls along the surface of the matching surface 120. The outer wall of the friction wheel 321 can include a rough surface after roughening treatment, and the surface of the matching surface 120 is 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 matching surface 120. The outer wall of the friction wheel 321 can also be a corrugated surface, and the matching surface 120 is also a corrugated surface, thereby increasing the frictional resistance between the friction wheel 321 and the matching surface 120, facilitating the rolling of the friction wheel 321 along the surface of the matching 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 matching surface 120 can also be other surfaces treated to increase friction. The surface treatment methods of the outer wall of the friction wheel 321 and the matching surface 120 can be the same or different.

[0126] In order to increase the friction between the friction wheel 321 and the matching 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 matching surface 120. Of course, the outer wall of the friction wheel 321 can also be made of other plastic, metal or other materials.

[0127] In another embodiment, the friction wheel 321 and the accommodating surface 120 can be in 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 enable the friction wheel 321 to roll along the accommodating surface 120.

[0128] Of course, as some optional ways, the friction wheel 321 and the accommodating surface 120 can also be in other forces, so that the friction wheel 321 can roll along the surface of the accommodating surface 120 when rotating.

[0129] 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 friction 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 friction 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.

[0130] Please refer to Figure 11 and Figure 16 In some embodiments, the friction wheel 321 and the accommodating surface 120 are not in contact when the swing arm 200 moves to the stowed position or the extended position, which can avoid the continuous interaction between the friction wheel 321 and the accommodating surface 120, thereby improving the wear of the friction surface of the friction wheel 321 and the accommodating surface 120, and further affecting the swing of the swing arm 200. Therefore, by 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.

[0131] Please refer to Figure 7 In an embodiment, the accommodating surface 120 protrudes from the wall of the fixed frame 100. When the swing arm 200 is kept in the stowed position or the extended position, the friction wheel 321 is always rotating. By making the accommodating surface 120 protrude from the wall of the fixed frame 100, the friction wheel 321 can move to the two sides of the accommodating surface 120 without being in contact with the wall, which can avoid the friction between the swing arm 200 and the wall of the fixed frame 100 when the swing arm 200 is kept in the extended position or the stowed position, reduce the wear of the friction wheel 321 and the wall of the fixed frame 100, prolong the service life of the friction wheel 321, and improve the durability of the cleaning device.

[0132] Of course, as some optional ways, the accommodating surface 120 can be flush with part of the wall 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 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 wear of the friction wheel 321.

[0133] Referring to Figure 7 In an embodiment, the accommodating surface 120 comprises a first accommodating surface 121 and a second accommodating surface 122, 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, and the friction wheel 321 is moved up and down to respectively abut against the first accommodating surface 121 and the second accommodating surface 122, and then the friction wheel 321 is rotated in different directions to complete the switching of the position of the swing arm 200.

[0134] 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 comprises an outer swing transmission assembly 322, 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.

[0135] Referring to Figure 7 In an embodiment, the first end of the first accommodating surface 121 exceeds the first end of the second accommodating surface 122, and the second end of the second accommodating surface 122 exceeds the second end of the first accommodating surface 121, the first end and the second end are respectively two opposite ends of the accommodating surface 120, for example, the first end and the second end are respectively 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 on the side of the first end of the second accommodating surface 122 or the side of 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.

[0136] For example, as shown in Figure 12 When the swing arm 200 is kept in the retracted position, the friction wheel 321 is located above the second end of the second accommodating surface 122 and on the side of 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 be moved to the extended position, as shown in Figure 13As shown, the control friction wheel 321 moves downward to the second end of the second engaging surface 122, the friction wheel 321 abuts the second engaging surface 122, the rotation of the friction wheel 321 makes the friction wheel 321 move along the surface of the second engaging surface 122 until the friction wheel 321 moves to the first end of the second engaging surface 122 and then disengages from the second engaging surface 122, as shown. Figure 15 As shown, the swing arm 200 is in the extended position. Similarly, when the swing arm 200 needs to move from the extended position to the stowed position, as shown. Figure 16 As shown, the friction wheel 321 moves upward to the abutting position of the first engaging surface 121, and then the friction wheel 321 rolls along the surface of the first engaging surface 121, driving 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 engaging surface 122, beside the second end of the first engaging surface 121, and the swing arm 200 moves to the stowed position.

[0137] When the swing arm 200 is in the stowed position, the friction wheel 321 does not abut the first engaging surface 121, and the friction wheel 321 can abut the second engaging 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 the second engaging surface 122, and the friction wheel 321 can abut the first engaging surface 121 after moving along the axial direction of the friction wheel 321.

[0138] It should be noted that the above-mentioned first end and second end are for illustration only and are not specific to one end of the engaging surface 120, for example, the first end can be the left end of the engaging surface 120, or the right end of the engaging surface 120, and the second end is opposite to the first end. Similarly, the positions of the first engaging surface 121 and the second engaging surface 122 along the axial direction of the friction wheel 321 are also for illustration only, for example, when the axial direction of the friction wheel 321 is vertical, the first engaging surface 121 can be above the second engaging surface 122, or the first engaging surface 121 can be below the second engaging surface 122.

[0139] Please refer to Figures 4 to 6 In an embodiment, the outer swing transmission assembly 322 includes an axle 3221, the axle 3221 and one of the friction wheels 321 are provided with a helical tooth groove along the axial direction of the axle 3221, and the other is provided with a tooth that cooperates with the tooth groove, the tooth can slide in the tooth groove, so that the friction wheel 321 moves along the axial direction of the axle 3221.

[0140] 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 along the axial direction of the axle 3221 when the tooth slides in the tooth groove.

[0141] Please refer to Figure 5 and Figure 6 In some embodiments, a tooth groove is arranged on the outer periphery of the wheel shaft 3221, and a tooth is arranged on the inner wall of the friction wheel 321 penetrating the wheel shaft 3221. When the tooth slides in the tooth groove, the friction wheel 321 moves along the axial direction of the wheel shaft 3221. The axial length of the tooth groove along the wheel shaft 3221 is the same as or positively correlated with the stroke of the friction wheel 321 moving along the axial direction of the wheel shaft 3221. The tooth groove is arranged on the wheel shaft 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 wheel shaft 3221, effectively reducing the volume of the cleaning assembly, and facilitating the internal space layout of the cleaning assembly.

[0142] The outer swing transmission assembly 322 includes a first stop portion 3222 and a second stop portion 3223, which limit the stroke of the friction wheel 321 moving along the axial direction of 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, and this force has a tendency to hinder the rotation of the friction wheel 321 following the wheel shaft 3221. By arranging the first stop portion 3222 and the second stop portion 3223 to limit the friction wheel 321, 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, and thus the friction wheel 321 moves up and down along the wheel shaft 3221. Therefore, in the embodiments of the present application, the first stop portion 3222 and the second stop portion 3223 are arranged to drive the friction wheel 321 to rotate, which can further ensure the stability of the swing of the swing arm 200.

[0143] 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.

[0144] Please refer to Figure 5 and Figure 6In 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 moving stroke of the friction wheel 321 along the axial direction of the wheel shaft 3221.

[0145] For example, the wheel shaft 3221 is provided with a tooth groove on the outer periphery; 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; wherein the friction wheel 321 is provided with a tooth matched with the tooth groove, and the first stop portion 3222 and the second stop portion 3223 limit the stroke of the tooth of the friction wheel 321 sliding 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 tooth and the tooth groove, the friction wheel 321 rotates relative to the wheel shaft 3221, and further 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 tooth moves to the end of the tooth groove and is 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 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 stowed position and the deployed position is completed.

[0146] In some embodiments, the tooth on the friction wheel 321 can be a protrusion extending from the inner wall of the friction wheel 321 to the axial direction of the friction wheel 321, which is inserted into the tooth groove and moves 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 tooth on the friction wheel 321 can also be an internal thread arranged on the inner wall and matched with the tooth groove, which moves relative to the tooth groove, so as to make the friction wheel 321 move along the axial direction of the wheel shaft 3221.

[0147] 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 tooth and the tooth groove.

[0148] 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.

[0149] Please refer toFigure 5 In one embodiment, the end of the wheel shaft 3221 is fixed with a cover plate 3226, the outer diameter of the cover plate 3226 is larger than the outer diameter of the wheel shaft 3221, the cover plate 3226 further limits the friction wheel 321, avoiding the friction wheel 321 from being separated from the wheel shaft 3221 when the wheel shaft 3221 rotates relative to the friction wheel 321.

[0150] Please refer to Figure 6 The tooth groove is arranged on the outer periphery of the wheel shaft 3221, the first stop portion 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 stop portion 3222 in the tooth groove of the wheel shaft 3221, it is more convenient to process the first stop portion 3222 on the cover plate 3226, and the manufacturing cost is reduced. At the same time, if the first stop portion 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 stop portion 3222 on the cover plate 3226, it is beneficial to the assembly of the friction wheel 321 and the wheel shaft 3221.

[0151] 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 joint, and the bolt connection is preferred, that is, the bolt penetrates through the cover plate 3226 and is threadedly connected with the wheel shaft 3221, so that the cover plate 3226 and the wheel shaft 3221 are fixed.

[0152] Please refer to Figure 4 and Figure 5In an embodiment, the outer swing transmission assembly 322 comprises a first elastic member 3224, which exerts a force that reduces the pressure between the friction wheel 321 and the wheel shaft 3221, for example, reduces the pressure between the contact surfaces of the teeth and the tooth grooves, so as to reduce the friction between the friction wheel 321 and the wheel shaft 3221, for example, reduce the friction between the contact surfaces of the matching teeth and tooth grooves. As shown in the above embodiment, the wheel shaft 3221 and the friction wheel 321 are matched by the teeth and tooth grooves, so as to realize the movement of the friction wheel 321 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 tooth grooves, 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, thereby affecting 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 grooves of the wheel shaft 3221, so as to realize the movement of the friction wheel 321 along the axial direction of the wheel shaft 3221, and complete the switching of the friction wheel 321 between the first and second engaging surfaces 121 and 122.

[0153] 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.

[0154] 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.

[0155] The first elastic member 3224 is preferably a spring, which has stable and controllable elastic force, low cost and convenient arrangement.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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 shape of the friction wheel 321 caused by the blocking ring 3211 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.

[0165] In some embodiments, the blocking ring 3211 can be sleeved on the wheel shaft 3221 to further reduce the space occupation.

[0166] In some embodiments, the blocking ring 3211 can be sleeved on the wheel shaft 3221 to further reduce the space occupation.

[0167] 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.

[0168] 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 and / or fixed, the first gear 3231 at the input end of the first intermediate transmission assembly 323 is engaged with the driving output gear 312, and the 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 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.

[0169] Please refer to Figure 14 and Figure 18In one embodiment, the cleaning assembly includes a second elastic member 400. One end of the second elastic member 400 is disposed on the swing arm 200, and the other end of the second elastic member 400 is disposed on the fixing frame 100. When the swing arm 200 is in the retracted position, the second elastic member 400 applies a force to the swing arm 200 with a rotational tendency in a third clockwise direction, causing the friction wheel 321 to disengage from the mating surface 120. The third clockwise direction is the rotational direction of the swing arm 200 from the extended position to the retracted position. When the swing arm 200 is in the extended position, the second elastic member 400 applies a force to the swing arm 200 with a rotational tendency in a fourth clockwise direction, causing the friction wheel 321 to disengage from the mating surface 120. The fourth clockwise direction is the rotational direction of the swing arm 200 from the retracted position to the extended position.

[0170] When the cleaning component moves from the retracted position to the extended position, the force between the friction wheel 321 and the second contact surface 122 causes the friction wheel 321 to roll along the second contact surface 122. Figure 15 As shown, when the friction wheel 321 moves to the end of the second mating surface 122, the friction wheel 321 partially contacts the second mating surface 122. The force between the friction wheel 321 and the second mating surface 122 is insufficient to completely disengage the friction wheel 321 from the second mating surface 122. A certain force is always present between the ends of the friction wheel 321 and the second mating surface 122, which can lead to problems such as vibration of the swing arm 200, wear of the friction wheel 321, and wear of the second mating surface 122. The force applied to the swing arm 200 by the second elastic element 400 allows the friction wheel 321 to completely disengage from the second mating surface 122, thereby reducing the vibration of the swing arm 200, preventing wear of the friction wheel 321 and the second mating surface 122, and extending the service life of the friction wheel 321 and the second mating surface 122. Simultaneously, the continuous force applied to the swing arm 200 by the second elastic element 400 can also reduce the swaying of the swing arm 200 during the cleaning process and prevent the swing arm 200 from retracting. During the cleaning process, the cleaning component may be squeezed and bumped against the wall or other surfaces, causing the swing arm 200 to rotate toward the retracted position. Under the action of the second elastic element 400, the cleaning component will also return to the extended position in time.

[0171] Similarly, such as 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.

[0172] In some embodiments, if the swing arm 200 is pressed against the 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 the 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.

[0173] 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 with 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] Referring to Figure 22 In some embodiments, the fixing 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 fixing 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 fixing frame 100 connection or the first mounting member 160 body, and improves the durability of the first mounting member 160.

[0189] 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.

[0190] 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.

[0191] Please refer to Figure 23 In some embodiments, the swing arm 200 includes a relatively fixed upper housing 240 and a lower housing 250, which enclose a receiving cavity in which a part of the power assembly and the transmission mechanism, such as the first intermediate transmission assembly 323 and the second transmission assembly 330, are mounted.

[0192] 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.

[0193] 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.

[0194] In some embodiments, the first rotating shaft 110 is located between the friction wheel 321 and the connecting end of the cleaning member, and 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 of the swing arm 200 and perpendicular to the height direction of the swing arm 200. The line connecting the axis of the first rotating shaft 110 and the output shaft of the motor 313 is parallel or substantially parallel to the width direction of the swing arm 200. The first rotating shaft 110 can be close to the edge of the swing arm 200 and / or the fixed frame 100, which facilitates the relative rotation between the swing arm 200 and the fixed frame 100.

[0195] Referring to Figure 21 and Figure 22 In some embodiments, the fixed frame 100 comprises 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 is formed with a space for avoiding the motor 313 near the side of the motor 313, which prevents the motor 313 from interfering with the fixed frame 100. The friction wheel 321 is located below the top housing 170, and the top housing 170 protects the friction wheel 321, thereby reducing the risk of the friction wheel 321 being bumped. The friction wheel 321 rotates during use of the cleaning assembly. The top housing 170 protects the friction wheel 321, thereby reducing the risk of foreign matter entering the friction wheel 321 and reducing the risk of the friction wheel 321 being restricted by foreign matter.

[0196] Referring to 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.

[0197] 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.

[0198] 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 with the driving output gear 312, and the output end of the second rotary transmission assembly 332 is connected with 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.

[0199] 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 stowed 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.

[0200] 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.

[0201] 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.

[0202] 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; the second gear 3311 is movably and coaxially arranged between the third gear 3321 and the fourth gear 3322 along the axial direction of the second gear 3311; the side of the third gear 3321 and the fourth gear 3322 facing the second gear 3311 is provided with a ratchet; and the driving output gear 312 changes the rotating direction so that the ratchet of the second gear 3311 selectively engages with the ratchet of the third gear 3321 or the ratchet of the fourth gear 3322. The second gear 3311 is movable along the axial direction, and the ratchet of the second gear 3311 does not engage 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 engage 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.

[0203] 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.

[0204] 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 and the third gear 3321 are connected by a one-way bearing, and the second gear 3311 and the fourth gear 3322 are connected by another one-way bearing. Thus, 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.

[0205] 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 and the shaft of the third gear 3321 are connected by a one-way bearing, and the shaft of the second gear 3311 and the shaft of the fourth gear 3322 are connected by 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.

[0206] 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 first rotation transmission assembly 331.

[0207] The second aspect of the utility model provides a kind of cleaning equipment, including equipment main body and the cleaning assembly of any one described above, the fixing frame 100 of the cleaning assembly is installed in the equipment main body.Cleaning equipment is configured to clean the surface to be cleaned, and the cleaning equipment can be a vacuum cleaning robot, can also be a mop / brushing robot, can also be a window robot, etc., and the cleaning equipment can have moving, cleaning, dust collection and other functions.Cleaning equipment includes equipment main body, cleaning module and cleaning assembly, and the cleaning module and cleaning assembly are installed on the equipment main body to clean the surface to be cleaned.The cleaning equipment can also have other components or modules, such as a control system, a travel system, etc., please refer to the existing cleaning equipment, and this application will not be described here.

[0208] The cleaning assembly of the cleaning equipment includes 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 changes.When cleaning a normal 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 areas 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 user satisfaction.Therefore, the utility model effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

[0209] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model.Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model.Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A cleaning assembly characterized by, The cleaning assembly comprises: a fixing frame (100) configured to be connected to a main body of a cleaning device, the fixing frame (100) being provided with a first rotating shaft (110); a swing arm (200) rotatably connected to the fixing frame (100) through the first rotating shaft (110), the swing arm (200) being provided with a rotatable cleaning member; a power assembly (300) configured to drive the cleaning member to rotate and drive the swing arm (200) to rotate relative to the fixing frame (100) so as to drive the swing arm (200) to move between a retracted position and an extended position; wherein the first rotating shaft (110) is independent of the power assembly (300).

2. The cleaning assembly of claim 1, wherein, The power assembly (300) comprises: a driving member (310); a first transmission assembly (320) configured to drive the swing arm (200) to rotate relative to the fixing frame (100) under the drive of the driving member (310); a second transmission assembly (330) configured to drive the cleaning member to rotate under the drive of the driving member (310).

3. The cleaning assembly of claim 2, wherein, The driving member (310) comprises a rotating output shaft (311), the rotating output shaft (311) rotates in a first clockwise direction in a normal cleaning mode and rotates in a second clockwise direction in a special cleaning mode; in a 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 a 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.

4. The cleaning assembly of claim 3, wherein, The cleaning member rotates in the same clockwise direction in the special cleaning mode and in the normal cleaning mode.

5. The cleaning assembly according to claim 1, wherein: the fixing frame (100) is provided with a first limiting portion (130); the swing arm (200) is provided with a second limiting portion (210); the first limiting portion (130) and the second limiting portion (210) cooperate to limit the movement of the swing arm (200) between the retracted position and the extended position.

6. The cleaning assembly of claim 5, wherein, The second limiting portion (210) is a limiting groove, and the first limiting portion (130) is a limiting block inserted into the limiting groove, the limiting block being moved to two ends of the limiting groove closed in the retracted position and the extended position, respectively.

7. The cleaning assembly of claim 6, wherein, The limiting block is an arc-shaped block, the center of the arc-shaped block being on the axis of the first rotating shaft (110); a gap exists between the limiting block and the first rotating shaft (110); and the limiting groove is an arc-shaped groove.

8. The cleaning assembly of claim 1, wherein, The fixed frame (100) is provided with an insertion part (140), and 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). 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).

9. The cleaning assembly of claim 8, wherein, The cross section of the insertion part (140) along the radial direction of the insertion part (140) is circular, and the slot (230) is a circular slot; or the slot (230) is an arc-shaped slot, and the angle of the slot (230) is greater than 180°.

10. The cleaning assembly of claim 2, wherein, The output end of the first transmission assembly (320) comprises a friction wheel (321), and the wall surface of the fixed frame (100) is provided with a concave surface (120); when the friction wheel (321) abuts against the concave surface (120), an acting force exists between the friction wheel (321) and the concave surface (120), so that the friction wheel (321) rolls along the concave surface (120).

11. The cleaning assembly of claim 10, wherein, The friction wheel (321) does not abut against the concave surface (120) when the swing arm (200) is in the retracted position and the extended position.

12. The cleaning assembly of claim 11, wherein, Comprise: A second elastic member (400) is arranged at one end of the swing arm (200) and at the other end of the fixed frame (100). When the swing arm (200) is in the retracted position, the second elastic member (400) applies a force to the swing arm (200) to make the swing arm (200) have a tendency to rotate in a third clock direction, so that the friction wheel (321) is separated from the concave surface (120); the third clock direction is the rotating direction of the swing arm (200) from the extended position to the retracted position; when the swing arm (200) is in the extended position, the second elastic member (400) applies a force to the swing arm (200) to make the swing arm (200) have a tendency to rotate in a fourth clock direction, so that the friction wheel (321) is separated from the concave surface (120); the fourth clock direction is the rotating direction of the swing arm (200) from the retracted position to the extended position.

13. The cleaning assembly of claim 12, wherein, When the swing arm (200) switches between the retracted position and the extended position, the movement path of the action line of the force applied by the second elastic member (400) to the swing arm (200) passes through the axis of the first rotating shaft (110).

14. The cleaning assembly of claim 10 or 11, wherein: The concave surface (120) comprises a first concave surface (121) and a second concave surface (122); in the axial direction of the friction wheel (321), the first end of the projection of the first concave surface (121) is beyond the first end of the projection of the second concave surface (122), and the second end of the projection of the second concave surface (122) is beyond the second end of the projection of the first concave surface (121); the first end and the second end are opposite ends. The first transmission assembly (320) comprises an outer swing transmission assembly (322) which 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 and second abutment surfaces (121 and 122) respectively.

15. The cleaning assembly of claim 14, wherein, The outer swing transmission assembly (322) comprises: a wheel shaft (3221) provided with a helical-shaped tooth groove along the axial direction of the wheel shaft (3221), and the friction wheel (321) is provided with a tooth matched with the tooth groove; a first stop portion (3222) arranged in and / or outside the tooth groove; a second stop portion (3223) arranged in and / or outside the tooth groove; wherein the tooth moves along the tooth groove to drive the friction wheel (321) to move along the axial direction of the wheel shaft (3221), and the first and second stop portions (3222 and 3223) limit the axial movement of the friction wheel (321) along the wheel shaft (3221).

16. The cleaning assembly of claim 15, wherein, The first and second stop portions (3222 and 3223) are arranged at both ends of the tooth groove, and limit the movement of the tooth along the tooth groove, thereby limiting the axial movement of the friction wheel (321) along the wheel shaft (3221).

17. The cleaning assembly of claim 12, wherein, The fixed frame (100) is provided with: a rotating shaft mounting portion (150) through which the first rotating shaft (110) penetrates; a first mounting member (160) abutting against the rotating shaft mounting portion (150), and one end of the second elastic member (400) is connected to the first mounting member (160).

18. The cleaning assembly of claim 17, wherein, The first mounting member (160) comprises a plug rod (161) and a plug portion (162), and the plug rod (161) is plugged into 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).

19. The cleaning assembly of claim 12, wherein, The fixed frame (100) is provided with a first mounting member (160) arranged between the first rotating shaft (110) and the abutment 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) 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).

20. The cleaning assembly of claim 15, wherein, The first transmission assembly (320) comprises 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), so that the driving member (310) drives the wheel shaft (3221) to rotate.

21. The cleaning assembly of claim 20, wherein, The driving member (310) comprises a rotating output shaft (311) and a driving output gear (312), and the driving output gear (312) is fixed to the rotating output shaft (311); The wheel shaft (3221) is provided with an outer swing output gear (3225); The first intermediate transmission assembly (323) comprises a plurality of first gears (3231) arranged in sequence along a transmission direction, and adjacent first gears (3231) are engaged and / or fixed; The first gear (3231) at the input end of the first intermediate transmission assembly (323) is engaged with the driving output gear (312), and the first gear (3231) at the output end of the first transmission assembly (320) is engaged with the outer swing output gear (3225).

22. The cleaning assembly of claim 10, wherein, The driving member (310) comprises a motor (313), and the motor (313) is arranged on the upper side of the upper shell (240) of the swing arm (200); The connection ends of the friction wheel (321) and the cleaning member are respectively located at both ends of the swing arm (200) in the length direction, and the motor (313) is arranged between the connection ends of the friction wheel (321) and the cleaning member; When the swing arm (200) is in the extended position, the motor (313) is located on the lower side of the main body of the cleaning device.

23. The cleaning assembly of claim 22, wherein, The first rotating shaft (110) is located between the connection ends of the friction wheel (321) and the cleaning member; The first rotating shaft (110) and the motor (313) are arranged along the width direction of the swing arm (200).

24. The cleaning assembly of claim 22, wherein, The fixed frame (100) comprises: The top shell (170) is located above the upper shell (240) of the swing arm (200) and is formed with a clearance space for avoiding the motor (313) near the side of the motor (313), and the friction wheel (321) is located below the top shell (170); The side shell (180) is located on one side of the top shell (170) and extends towards the swing arm (200), and the accommodating surface (120) is arranged on the wall surface of the side shell (180) facing the friction wheel (321).

25. The cleaning assembly of claim 24, wherein, The fixed frame (100) is provided with a first limiting portion (130), and the first limiting portion (130) 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) 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.

26. The cleaning assembly of claim 25, wherein, The first limiting part (130) is located at the lower part of the fixed frame (100), and the second limiting part (210) is located at the upper part of the swing arm (200).

27. The cleaning assembly of claim 2, wherein The driving member (310) comprises a rotating output shaft (311) and a driving output gear (312), and the driving output gear (312) is fixed to the rotating output shaft (311); The second transmission assembly (330) comprises 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 with the driving output gear (312), and the output end of the second rotary transmission assembly (332) is connected with the cleaning member; The second rotary transmission assembly (332) comprises 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).

28. The cleaning assembly of claim 27, wherein, The output end of the first rotary transmission assembly (331) is a second gear (3311); The two input ends of the second rotary transmission assembly (332) are respectively a third gear (3321) and a fourth gear (3322); The second gear (3311) is coaxially arranged between the third gear (3321) and the fourth gear (3322), and the second gear (3311) and the third gear (3321) and the second gear (3311) and the fourth gear (3322) are respectively connected through one-way bearings, and the driving output gear (312) changes the rotating direction so that the second gear (3311) selectively drives the third gear (3321) or the fourth gear (3322) to rotate.

29. A cleaning apparatus, characterized by The device body and the cleaning assembly of any one of claims 1-28, wherein the fixed frame (100) of the cleaning assembly is mounted on the device body.

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