Cleaning device

Abstract

The embodiment of the utility model provides cleaning equipment. The cleaning equipment comprises a main machine body; the floor brush assembly is rotationally connected with the main machine body, and the floor brush assembly comprises a shell, a cleaning part and a wheel assembly; the cleaning part is arranged at one end of the shell, the wheel assembly is arranged at the end, away from the cleaning part, of the floor brush assembly, and the cleaning part and the wheel assembly are arranged at intervals in the first direction. The wheel assembly comprises a first driving mechanism, a driving wheel and at least two auxiliary wheels, the driving wheel is arranged in the middle of the end, away from the cleaning part, of the floor brush assembly, and the auxiliary wheels are located on the two opposite sides of the driving wheel in the second direction, so that the situation that the floor brush assembly topples over on one side is avoided. The ground brush assembly is damaged due to the fact that the ground brush assembly collides with the to-be-cleaned face, and the service life of the ground brush assembly can be effectively prolonged. And secondly, the driving wheel is arranged in the middle, so that the space required by the floor brush assembly in the rotating process is reduced, and the floor brush assembly disclosed by the embodiment of the utility model can steer in a smaller space.

Description

Technical Field

[0001] The present disclosure relates to the technical field of household appliances, and in particular to a cleaning device and a power assist device. Background Art

[0002] With the development of social productivity, people's living standards have also improved. With material resources guaranteed, people have begun to use a variety of tools to reduce labor and improve their quality of life, and cleaning equipment has emerged as a result. Among them, floor scrubbers with both dust and water absorption capabilities have gained widespread favor with consumers for their powerful floor cleaning capabilities. In recent years, with technological advancements and product iterations, floor cleaning equipment has achieved significant development.

[0003] In the prior art, a drive wheel is typically located on each side of a floor scrubber's brush. When the scrubber is operating, the drive wheels can rotate forward or reverse under the drive force of the wheel motor, thereby assisting the cleaning device in moving forward or backward and reducing the pushing and pulling force exerted by the user. On the one hand, in some floor scrubbers, the two drive wheels are placed on the outermost sides of the floor brush, placing them at their greatest distance from the center of the brush. This increases the turning radius of the drive wheels when the user turns the scrubber, and combined with the resistance of the drive wheels themselves, makes steering the scrubber very difficult, significantly reducing the user experience. On the other hand, when the scrubber is turned off or paused, and the user needs to push or pull the scrubber to move it to another location, the drive wheels, equipped with components such as a reduction gearbox, resist rotation when the wheel motor is not operating. This results in the user applying greater force to push or pull the scrubber than with conventional follower wheels, making it even more difficult to push or pull the scrubber when not operating. Utility Model Content

[0004] The embodiments of the present disclosure provide a cleaning device to solve or alleviate one or more technical problems in the prior art.

[0005] In a first aspect, an embodiment of the present disclosure provides a cleaning device, comprising: a main body; a floor brush assembly, rotatably connected to the main body, the floor brush assembly comprising a shell, a cleaning member, and a wheel assembly; the cleaning member is arranged at one end of the shell, the wheel assembly is arranged at an end of the floor brush assembly away from the cleaning member, and the cleaning member and the wheel assembly are spaced apart along a first direction; the wheel assembly comprises a first driving mechanism, a driving wheel, and at least two auxiliary wheels, the driving wheel is centered at the end of the floor brush assembly away from the cleaning member, the at least two auxiliary wheels are located on opposite sides of the driving wheel in a second direction, and the driving wheel is transmission-connected to the first driving mechanism; wherein the first direction and the second direction intersect.

[0006] In some embodiments, when the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture; in the first posture, the driving wheel has a contact point in contact with the surface to be cleaned, the contact point is recorded as the reference point, and the tangent plane passing through the reference point is recorded as the first tangent plane; the outer peripheral walls of the two auxiliary wheels are respectively separated from the first tangent plane.

[0007] In some embodiments, the side of the driving wheel away from the cleaning member has a second tangent plane perpendicular to the first tangent plane, and the second tangent plane is tangent to the outer peripheral wall of the driving wheel; the side of the two auxiliary wheels away from the cleaning member has a third tangent plane perpendicular to the first tangent plane, and the third tangent plane is tangent to the outer peripheral walls of the two auxiliary wheels respectively; wherein the third tangent plane is located on the side of the second tangent plane away from the cleaning member.

[0008] In some embodiments, the distance between the rotation center of the auxiliary wheel and the first tangent plane is smaller than the distance between the rotation center of the driving wheel and the first tangent plane.

[0009] In some embodiments, when the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture, the rotation center of the auxiliary wheel is located on the side of the rotation center of the driving wheel away from the cleaning member, and the radius of the auxiliary wheel is smaller than the radius of the driving wheel.

[0010] In some embodiments, the radius of the driving wheel is R1, the distance between the central axis of the driving wheel and the central axis of the auxiliary wheel is D, and R1>D.

[0011] In some embodiments, in the first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel and the first tangent plane is L2; ​​when observing the floor brush assembly along the second direction, the maximum distance between the outer peripheral wall of the driving wheel and the outer peripheral wall of the auxiliary wheel is L1, L1>L2.

[0012] In some embodiments, in a first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel and the first tangent plane is L2; ​​the floor brush assembly also has a second posture, in which one end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, the two auxiliary wheels are in contact with the surface to be cleaned, the floor brush assembly and the surface to be cleaned have an angle θ, and the distance between the lowest point of the outer peripheral wall of the driving wheel and the surface to be cleaned is L3; L3, L2, and θ satisfy: when 35°≤θ≤65°, L3>L2.

[0013] In some embodiments, the driving wheel is centrally disposed on the housing in a second direction, and the second direction is parallel to the rotation axis of the cleaning member.

[0014] In some embodiments, the floor brush assembly also includes two support wheels, which are adjacent to the cleaning member and are respectively arranged at opposite ends of the shell in the second direction; when the cleaning equipment performs the cleaning task of the surface to be cleaned, the floor brush assembly has a first posture, and the driving wheel and the two support wheels form a three-point support for the bottom surface of the shell.

[0015] In some embodiments, a mounting groove is provided at the bottom of the housing, the driving wheel is at least partially disposed in the mounting groove, and at least a portion of the driving wheel is located inside the housing.

[0016] In some embodiments, the first driving mechanism includes: a first motor and a transmission mechanism, the output shaft of the first motor is connected to the driving wheel through the transmission mechanism; the output shaft of the first motor is located above the rotation axis of the driving wheel.

[0017] In some embodiments, when the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture. When the floor brush assembly moves in the first posture, the driving wheel rotates and at least one auxiliary wheel does not rotate.

[0018] In some embodiments, the floor brush assembly has a second posture. In the second posture, one end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, and the two auxiliary wheels are in contact with the surface to be cleaned; when the floor brush assembly moves in the second posture, the two auxiliary wheels rotate and the driving wheel does not rotate.

[0019] In the second aspect, the embodiment of the present disclosure also provides a cleaning device, which includes: a main body; a floor brush assembly, which is rotatably connected to the main body, the floor brush assembly including a shell, a cleaning member, and a wheel assembly; the cleaning member is arranged at one end of the shell, and the wheel assembly is arranged at an end of the shell away from the cleaning member, and the cleaning member and the wheel assembly are spaced apart along a first direction; the wheel assembly includes a first driving mechanism, a driving wheel and two auxiliary wheels, the two auxiliary wheels are located on opposite sides of the driving wheel in the second direction, and the driving wheel is transmission-connected to the first driving mechanism; wherein the first direction and the second direction intersect; when the cleaning device performs the cleaning task of the surface to be cleaned, the floor brush assembly has a first posture, the driving wheel contacts the traveling surface, and at least one auxiliary wheel is disengaged from the traveling surface; the floor brush assembly also has a second posture, in the second posture, the end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, the two auxiliary wheels contact the traveling surface, and the driving wheel is disengaged from the traveling surface.

[0020] The embodiments of the present disclosure have the following beneficial effects:

[0021] According to the technology disclosed herein, on one hand, by providing auxiliary wheels on opposite sides of the driving wheel in the second direction, when the floor brush assembly tilts on one side due to weight imbalance, the auxiliary wheels corresponding to the tilted side abut against the surface to be cleaned and provide a certain degree of support and guidance for the floor brush assembly, thereby preventing the floor brush assembly from colliding with the surface to be cleaned when the floor brush assembly tilts on one side, thereby causing damage to the floor brush assembly, and effectively increasing the service life of the floor brush assembly. On the other hand, the central arrangement of the driving wheels reduces the space required for the floor brush assembly to rotate, which facilitates the floor brush assembly of the disclosed embodiment to achieve steering in a smaller space. On the other hand, when the cleaning device needs to be moved quickly, the cleaning device can be shut down or the cleaning task can be paused, and then the floor brush assembly is placed in the second posture, so that the driving wheel is lifted off the surface to be cleaned and the two auxiliary wheels are in contact with the surface to be cleaned. Since the driving wheel is not in contact with the ground in this state and the auxiliary wheels are driven wheels, when the user moves the cleaning device, they only need to overcome the friction between the auxiliary wheels and the surface to be cleaned, and no longer need to overcome the resistance of the first drive mechanism and the driving wheels, making it easier for the user to move the cleaning device.

[0022] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0024] Figure 1 A schematic structural diagram showing a cleaning device in a first posture according to an embodiment of the present disclosure;

[0025] Figure 2 A schematic diagram of the bottom structure of a floor brush assembly according to an embodiment of the present disclosure is shown;

[0026] Figure 3 A schematic structural diagram showing a cleaning device in a second posture according to an embodiment of the present disclosure;

[0027] Figure 4 A cross-sectional view showing a floor brush assembly in a first posture according to an embodiment of the present disclosure;

[0028] Figure 5 A cross-sectional view showing a floor brush assembly in a second posture according to an embodiment of the present disclosure;

[0029] Figure 6 A cross-sectional view showing a floor brush assembly in a first posture according to an embodiment of the present disclosure;

[0030] Figure 7 A schematic diagram showing the positional relationship between auxiliary wheels and driving wheels according to an embodiment of the present disclosure;

[0031] Figure 8 A schematic diagram showing the positional relationship between auxiliary wheels and driving wheels according to an embodiment of the present disclosure;

[0032] Figure 9 A schematic structural diagram of a first driving structure according to an embodiment of the present disclosure is shown;

[0033] Figure 10 A schematic structural diagram of a cleaning device according to an embodiment of the present disclosure is shown.

[0034] Description of reference numerals:

[0035] 1. Cleaning equipment;

[0036] 10. Main body; 11. Handle;

[0037] 20. Floor brush assembly; 21. Housing; 211. Mounting slot; 22. Cleaning element; 23. Wheel assembly; 231. Drive wheel; 232. Auxiliary wheel; 233. First drive mechanism; 2331. First motor; 2332. Transmission mechanism; 24. First cutting plane; 25. Second cutting plane; 26. Third cutting plane; 27. Support wheel;

[0038] 30. Surface to be cleaned;

[0039] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0040] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0041] Figure 1 A schematic structural diagram showing a cleaning device 1 in a first posture according to an embodiment of the present disclosure is shown. Figure 2 A schematic diagram of the bottom structure of the floor brush assembly 20 according to an embodiment of the present disclosure (i.e., bottom view) is shown. Figure 1 and Figure 2The embodiment of the present disclosure provides a cleaning device 1, which includes: a main body 10 and a floor brush assembly 20. Specifically, the floor brush assembly 20 is rotatably connected to the main body 10, and the floor brush assembly 20 includes a shell 21, a cleaning member 22, and a wheel assembly 23. The cleaning member 22 is arranged at one end of the shell 21, and the wheel assembly 23 is arranged at the end of the floor brush assembly 20 away from the cleaning member 22. The cleaning member 22 and the wheel assembly 23 are arranged at intervals along the first direction X. The wheel assembly 23 includes a first driving mechanism 233, a driving wheel 231 and at least two auxiliary wheels 232. The driving wheel 231 is centered at the end of the floor brush assembly 20 away from the cleaning member 22. The at least two auxiliary wheels 232 are located on opposite sides of the driving wheel 231 in the second direction Y. The driving wheel 231 is transmission-connected to the first driving mechanism 233. Wherein, the first direction X and the second direction Y intersect.

[0042] It should be noted that at least one auxiliary wheel 232 is located on one side of the driving wheel 231 in the second direction Y, and at least one auxiliary wheel 232 is located on the other side of the driving wheel 231 in the second direction Y. The number of auxiliary wheels 232 on both sides of the driving wheel 231 can be the same or different. For example, the number of auxiliary wheels 232 on one side of the driving wheel 231 is 1, 2, or 3, and the number of auxiliary wheels 232 on the other side of the driving wheel 231 is 1, 2, or 3, but this is not limited here.

[0043] In the disclosed embodiments, the cleaning device 1 can be any device, such as a floor scrubber, a robot vacuum, a handheld vacuum cleaner, or a carpet cleaner. The following description of this disclosure uses a floor scrubber as an example. It is understood that a floor scrubber is a cleaning device 1 suitable for cleaning hard surfaces and capable of sucking up wastewater and removing it from the cleaning area. It offers advantages such as environmental friendliness, energy efficiency, and high efficiency.

[0044] In some optional embodiments, see Figure 1 and Figure 3 , a handle 11 is provided at one end of the main body 10 away from the floor brush assembly 20, and the handle 11 is used for the user to hold. The user applies force to the handle 11 to drive the cleaning device 1 to move on the surface to be cleaned 30, thereby achieving regional cleaning of the surface to be cleaned 30. The handle 11 usually includes some control buttons or switches, which may include a power on / off button, a mode switching button, a power adjustment button, or buttons for controlling other functions of the floor scrubber. It should be noted that the first direction X can be the forward or backward direction of the cleaning device 1, and the second direction Y can be the turning direction of the cleaning device 1, and the first direction X and the second direction Y are perpendicular.

[0045] It can be understood that "vertical" not only includes the absolutely vertical situation, but also includes the roughly vertical situation commonly recognized in engineering. For example, "vertical" refers to the state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°.

[0046] For example, the cleaning member 22 can be a roller brush or a mop. Taking the example of a roller brush as the cleaning member 22, a first receiving groove is provided at the bottom of the housing 21, and the first receiving groove extends along the second direction Y. At least a portion of the structure of the cleaning member 22 is accommodated in the first receiving groove, and the cleaning member 22 is rotatably arranged in the first receiving groove by a rotating shaft. The rotating shaft extends along the second direction Y, and the second direction Y is parallel to the axial direction of the cleaning member 22. The cleaning member 22 can rotate around the rotating shaft, thereby cleaning the dirt on the surface to be cleaned 30 by the rotating cleaning member 22. The material of the outer peripheral wall of the cleaning member 22 can be set accordingly according to the properties of the surface to be cleaned 30 and the corresponding cleaning requirements. For example, bristles can be provided on the outer peripheral wall of the cleaning member 22. When the surface to be cleaned 30 is a smooth floor, the material of the bristles can be velvet; for another example, when the surface to be cleaned 30 is a rough floor or has stubborn stains, the material of the bristles can be nylon. In addition, the material of the bristles can also be polypropylene or metal wire, etc., and can be set accordingly according to actual cleaning needs.

[0047] In some optional embodiments, the floor brush assembly 20 further includes a driving module, which is in transmission connection with the cleaning member 22. For example, when the cleaning member 22 is a roller brush, the driving module can drive the cleaning member 22 to rotate about its central axis, thereby cleaning dirt on the surface to be cleaned 30 through the rotating cleaning member 22. For example, the driving module can be a motor, and the output shaft of the motor is coaxially connected to the rotating shaft of the cleaning member 22, so that the driving module can drive the cleaning member 22 to rotate.

[0048] For example, the main body 10 and the floor brush assembly 20 of the cleaning device 1 are rotatably connected via an adapter. Figure 1 As shown, the main body 10 remains in an upright state, and the cleaning device 1 can be parked on the surface to be cleaned in the off state or the cleaning task pause state, or parked on the base station, which provides the floor scrubber with functions such as charging, self-cleaning, automatic replenishment of cleaning fluid, and automatic sewage discharge. Figure 10As shown, when the operator grasps the handle 11 and rotates the main body 10 backward to a tilted position, the operator can push and pull the brush assembly 20 forward and backward to allow it to move freely across the surface to be cleaned. In some embodiments, the main body 10 can be rotated to a flat position, essentially parallel to the surface to be cleaned. In this position, the brush assembly 20 can reach deep into low spaces, such as under sofas or beds. The operator can also grasp the handle 11 and twist the main body 10 left or right relative to the brush assembly 20 to achieve steering of the cleaning device 1.

[0049] Illustratively, the cleaning apparatus 1 also includes a fluid supply system consisting of a clean water tank, a water pump, and a fluid distributor. The clean water tank stores clean water or water with detergent added, providing the necessary cleaning medium for the cleaning process. The water pump draws the cleaning medium from the clean water tank and delivers it via a pipe to the fluid distributor, which evenly sprays the cleaning medium onto the cleaning element 22 or the surface to be cleaned, softening the dirt and helping the cleaning element 22 to more effectively pick up the dirt.

[0050] Illustratively, the cleaning device 1 also includes a dirt recovery system, which consists of a wastewater tank, a recovery channel, a dirt suction port, and a suction motor. The dirt suction port, located behind the cleaning element 22, is connected to the suction motor and is responsible for sucking in dirt picked up by the cleaning element 22. The suction motor generates a strong suction force to lift dirt from the ground and deliver it to the wastewater tank through the recovery channel.

[0051] Exemplarily, the cleaning device 1 may also include an energy supply module, which may include a rechargeable battery, such as a lithium-ion battery or a nickel-cadmium battery, which may provide the necessary electrical energy to the main body 10 and the floor brush assembly 20, so that the cleaning device 1 can be freed from the constraints of wires, ensuring that the cleaning device 1 can efficiently complete the cleaning task in an environment away from the socket.

[0052] like Figure 2 As shown, when the cleaning device 1 of the present disclosure performs a cleaning task on the surface to be cleaned 30 (that is, the cleaning device 1 is turned on, the main body 10 is tilted or lying flat, the suction motor works to generate negative pressure suction, the water pump works to transport the cleaning medium to the cleaning member 22, and the cleaning member 22 works and rotates on the surface to be cleaned 30 to wipe the surface to be cleaned 30 and pick up dirt), the floor brush assembly 20 has a first posture, and the user can push and pull the floor brush assembly 20 in the first posture through the handle 11 to clean the surface to be cleaned 30. Figure 3As shown, the floor brush assembly 20 can have a second posture. When the floor brush assembly 20 is in the second posture, the main body 10 remains in an upright state, the floor brush assembly 20 and the surface to be cleaned 30 have an angle θ, the end of the housing 21 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, and the end of the housing 21 away from the cleaning member 22 is in contact with the surface to be cleaned 30. At this time, the cleaning device 1 is in the off state or the paused cleaning state. A typical scenario in which the floor brush assembly 20 is in the second posture is that when the cleaning device 1 is turned off or the cleaning task is paused, the user can push and pull the floor brush assembly 20 in the second posture through the handle 11 to move the cleaning device 1 on the surface to be cleaned 30, for example: move the cleaning device 1 to a base station, move the cleaning device 1 to a predetermined position, etc. It should be noted that when the cleaning device 1 is in the off state or the cleaning task is paused, the first drive mechanism 233 for driving the drive wheel 231 to rotate does not work. As a result, the reducer in the first drive mechanism 233 will bring a certain resistance to the rotation of the drive wheel 231.

[0053] Figure 3 A schematic structural diagram showing the cleaning device 1 in a second posture according to an embodiment of the present disclosure is shown. Figure 4 A cross-sectional view showing the floor brush assembly 20 in a first posture according to an embodiment of the present disclosure is shown. Figure 5 A cross-sectional view showing the floor brush assembly 20 in the second posture according to an embodiment of the present disclosure is shown. Figure 1 、 Figure 3 、 Figure 4 as well as Figure 5 When the floor brush assembly 20 is in a first posture, the floor brush assembly 20 is placed flat on the surface to be cleaned 30, and the cleaning member 22 and the driving wheel 231 of the floor brush assembly 20 are in contact with the surface to be cleaned 30, so that the floor brush assembly 20 can move along the first direction X by respectively contacting the surface to be cleaned 30 through the driving wheel 231 and the cleaning member 22. When the floor brush assembly 20 is in a second posture, the floor brush assembly 20 and the surface to be cleaned 30 form an angle θ, the end of the housing 21 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, the two auxiliary wheels 232 of the floor brush assembly 20 are in contact with the surface to be cleaned 30, and the driving wheel 231 is lifted away from the surface to be cleaned 30, so that the cleaning device 1 can move along the first direction X by contacting the surface to be cleaned 30 through the two auxiliary wheels 232.

[0054] In this patent, when the cleaning device 1 performs a cleaning task, the floor brush assembly 20 is in a first posture, the driving wheel 231 is in contact with the surface to be cleaned 30, and the driving wheel 231 can rotate forward or reverse under the drive of the first driving mechanism 233. The driving wheel 231 is driven by the first driving mechanism 233 to rotate forward to help the cleaning device 1 move forward, and the driving wheel 231 is driven by the first driving mechanism 233 to reverse to help the cleaning device 1 move backward, thereby reducing the push and pull force when the user pushes and pulls the cleaning device 1 forward. When the cleaning device 1 needs to be moved quickly, the cleaning device 1 can be turned off or the cleaning task can be paused, and then the floor brush assembly 20 is in a second posture, so that the driving wheel 231 is lifted off the surface to be cleaned 30, and the two auxiliary wheels 232 are in contact with the surface to be cleaned 30. Since the driving wheel 231 is not in contact with the ground in this state, and the auxiliary wheel 232 is a driven wheel, when the user moves the cleaning device 1, he only needs to overcome the friction between the auxiliary wheel 232 and the surface to be cleaned 30, and no longer needs to overcome the resistance of the first driving mechanism 233 and the driving wheel 231, which makes it easier for the user to move the cleaning device 1.

[0055] The bottom of the housing 21 in the related art is provided with two drive wheels 231. Therefore, when the floor brush assembly 20 in the related art is turned, the two drive wheels 231 need to turn synchronously to realize the turning of the cleaning device 1. This causes the floor brush assembly 20 in the related art to have a large sliding stroke and a large turning radius when rotating, which causes the user to do more work when operating the cleaning device 1 to rotate, which is not conducive to the floor brush assembly 20 to achieve turning in a relatively narrow space. The drive wheel 231 of the embodiment of the present disclosure is centrally arranged at the bottom of the floor brush assembly. Since the adapter rotatably connected to the main body 10 and the floor brush assembly 20 is located on the longitudinal (first direction X) center axis of the floor brush assembly 20, the central drive wheel 231 and the adapter are located on the same longitudinal line, so that the rotation center of the drive wheel 231 and the rotation center of the adapter are on the same longitudinal line, so that the floor brush assembly 20 can turn more easily. In the prior art, the driving wheels 231 placed on both sides have a certain rotation radius and sliding stroke. In addition, due to the resistance of the driving transmission structure of the driving wheel 231 itself, the user needs a large force to achieve steering. However, the present application reduces the space required by the floor brush assembly 20 during the rotation process by centrally arranging the driving wheel 231, which is conducive to the floor brush assembly 20 of the disclosed embodiment to achieve steering in a smaller space.

[0056] According to the cleaning device 1 of the embodiment of the present disclosure, when the floor brush assembly 20 in the related art is placed flat on the surface 30 to be cleaned, the weight on both sides in the second direction Y is not completely balanced or the force applied to the floor brush assembly 20 by the user is uneven, which will cause the floor brush assembly 20 to tilt toward one side, thereby causing the side of the floor brush assembly 20 to fall and collide with the surface 30 to be cleaned. Based on this, in order to prevent the floor brush assembly 20 from tilting to one side when walking, the embodiment of the present disclosure provides auxiliary wheels 232 on the opposite sides of the driving wheel 231 in the second direction Y, so that when the floor brush assembly 20 tilts on one side due to weight imbalance, the auxiliary wheel 232 corresponding to the falling side abuts against the surface 30 to be cleaned and plays a certain supporting and guiding role on the floor brush assembly 20, thereby avoiding the situation where the floor brush assembly 20 collides with the surface 30 to be cleaned when the floor brush assembly 20 falls on one side, thereby causing damage to the floor brush assembly 20, which can effectively increase the service life of the floor brush assembly 20.

[0057] In some embodiments, see Figure 2 The driving wheel 231 is centrally arranged on the housing 21 in the second direction Y, and the second direction Y is parallel to the rotation axis of the cleaning member 22.

[0058] For example, see Figure 2 The driving wheel 231 is centrally arranged on the housing 21 in the second direction Y, and the two auxiliary wheels 232 are symmetrically distributed on both sides of the driving wheel 231.

[0059] Through the above-mentioned embodiment, compared with the related technical solution of setting two driving wheels 231 at the bottom of the shell 21 in the related art, the driving wheel 231 of the embodiment of the present disclosure is set in the center. Since the adapter that can rotatably connect the main body 10 and the floor brush assembly 20 is located on the longitudinal (first direction X) center axis of the floor brush assembly 20, the centered driving wheel 231 and the adapter are located on the same longitudinal line, so that the rotation center of the driving wheel 231 and the rotation center of the adapter are on the same longitudinal line, so that the floor brush assembly 20 can be turned more easily. The driving wheels 231 placed on both sides in the prior art have a certain rotation radius and sliding stroke. In addition, due to the resistance of the driving transmission structure of the driving wheel 231 itself, the user needs a large force to achieve steering. In addition, the central setting of the driving wheel 231 also reduces the space required by the floor brush assembly 20 during rotation, which is conducive to the floor brush assembly 20 of the embodiment of the present disclosure to achieve steering in a smaller space.

[0060] In another embodiment, the driving wheel 231 does not need to be provided on the housing 21, but can also be provided at the rear of the housing 21, that is, the driving wheel 231 is provided at the end of the floor brush assembly 20 away from the cleaning member 23 and is centrally provided. The principle is the same as above, and the technical effects of easy steering and steering in a small space can also be achieved.

[0061] It should be noted that, in the above embodiment, there is one driving wheel 231. However, in other embodiments, the centrally arranged driving wheel 231 is not limited to one, and there may be two, as long as the two driving wheels are centrally located on the floor brush assembly 20.

[0062] In some optional embodiments, see Figure 4 When the cleaning device 1 performs the cleaning task of the surface to be cleaned 30, the floor brush assembly 20 has a first posture, that is, a posture in which the cleaning member 22 and the driving wheel 231 are both in contact with the surface to be cleaned 30, and the driving wheel 231 has a contact point in contact with the surface to be cleaned 30. The contact point is recorded as the reference point, and the tangent plane passing through the reference point is recorded as the first tangent plane 24. At least when the floor brush assembly 20 is in the first posture, the outer peripheral walls of the two auxiliary wheels 232 are respectively separated from the first tangent plane 24. In addition, since the relative positions of the first tangent plane 24 and the shell 21 are fixed, and the relative positions of the auxiliary wheels 232 and the shell 21 are fixed, the positions of the auxiliary wheels 232 and the first tangent plane 24 are fixed. When the floor brush assembly 20 is in the second posture, the outer peripheral walls of the two auxiliary wheels 232 are also respectively separated from the first tangent plane 24. That is, regardless of whether the floor brush assembly 20 is in the first posture or the second posture, the outer peripheral walls of the two auxiliary wheels 232 are respectively separated from the first tangent plane 24.

[0063] It should be noted that since the auxiliary wheel 232 of the embodiment of the present disclosure is a driven wheel, the auxiliary wheel 232 is arranged at the bottom of the shell 21 through a rotating shaft. Therefore, when the floor brush assembly 20 is in the first posture and the floor brush assembly 20 is in the power-on state, when the auxiliary wheel 232 contacts the ground, the friction between the auxiliary wheel 232 and the ground will bring certain resistance to the forward or backward movement of the cleaning device 1. Based on this, when the floor brush assembly 20 is in a flat state, that is, when the floor brush assembly 20 is not tilted toward one side, the cleaning member 22 and the driving wheel 231 of the floor brush assembly 20 in the first posture are in contact with the surface 30 to be cleaned. At this time, the two auxiliary wheels 232 are disengaged from the surface 30 to be cleaned. Such a setting can ensure that the floor brush assembly 20 in the first posture will not be subject to the resistance brought to the floor brush assembly 20 by the auxiliary wheels 232 when it moves forward or backward in a flat state. Such a setting, on the one hand, avoids the friction resistance of the auxiliary wheels 232 when the user pushes and pulls the floor brush assembly 20 in a flat state. On the other hand, when the floor brush assembly 20 tilts to one side due to weight imbalance, the auxiliary wheels 232 on the tilted side are in contact with the surface 30 to be cleaned, which can effectively prevent the floor brush assembly 20 from colliding with the surface 30 to be cleaned when the floor brush assembly 20 tilts to one side, thereby causing damage to the shell 21.

[0064] In some embodiments, see Figure 4 and Figure 6The driving wheel 231 has a second tangent plane 25 on the side away from the cleaning member 22, perpendicular to the first tangent plane 24. The second tangent plane 25 is tangent to the outer peripheral wall of the driving wheel 231. The two auxiliary wheels 232 have third tangent planes 26 on the side away from the cleaning member 22, perpendicular to the first tangent plane 24. The third tangent planes 26 are tangent to the outer peripheral walls of the two auxiliary wheels 232. The third tangent planes 26 are located on the side of the second tangent plane 25 away from the cleaning member 22.

[0065] It should be noted that when the floor brush assembly 20 is in the second posture, the bottom surface of the shell 21 and the surface to be cleaned 30 have an angle θ, the end of the shell 21 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, the two auxiliary wheels 232 are in contact with the surface to be cleaned 30, and the driving wheel 231 is disengaged from the surface to be cleaned 30, so that when the user drags the cleaning device 1, the two auxiliary wheels 232 of the floor brush assembly 20 can contact the surface to be cleaned 30, thereby moving forward or backward along the first direction X, avoiding contact between the driving wheel 231 and the surface to be cleaned 30. Therefore, when observing the floor brush assembly 20 from the second direction Y, at least a portion of the auxiliary wheel 232 needs to protrude from the driving wheel 231 with the back of the cleaning member 22, so that the two auxiliary wheels 232 of the floor brush assembly 20 in the second posture can contact the surface to be cleaned 30 and the driving wheel 231 can be disengaged from the surface to be cleaned 30. Secondly, when the floor brush assembly 20 is in the second posture and the first driving mechanism 233 for driving the driving wheel 231 to rotate is not working, since the first driving mechanism 233 includes a reducer, if the driving wheel 231 and the auxiliary wheel 232 contact the ground at the same time, the floor brush assembly 20 in the second posture will be subject to resistance from the reducer during the pushing and pulling process. In order to avoid the user from encountering resistance from the driving wheel 231 when pushing and pulling the floor brush assembly 20 in the second posture, the driving wheel 231 of the floor brush assembly 20 in the second posture needs to be disengaged from the surface 30 to be cleaned.

[0066] Because the third cutting plane 26 in the above embodiment is located on the side of the second cutting plane 25 away from the cleaning member 22, at least a portion of the auxiliary wheel 232 can be protruded from the driving wheel 231 with its back facing the cleaning member 22, so that the two auxiliary wheels 232 of the cleaning device 1 in the second posture are in contact with the surface 30 to be cleaned and the driving wheel 231 is disengaged from the surface 30 to be cleaned, so that when the user pushes or pulls the cleaning device 1 in the second posture, he will not be subject to the resistance of the reducer of the driving wheel 231, which makes it easier for the user to push and pull the cleaning device 1.

[0067] In some embodiments, the distance between the rotation center of the auxiliary wheel 232 and the first tangent plane 24 is smaller than the distance between the rotation center of the driving wheel 231 and the first tangent plane 24. It should be noted that the distance between the rotation center of the driving wheel 231 and the first tangent plane 24 is the radius of the driving wheel 231.

[0068] Through the above embodiment, the auxiliary wheel 232 is required to satisfy the requirement that its outer peripheral wall is separated from the first tangent plane 24, and the distance between the rotation center of the auxiliary wheel 232 and the first tangent plane 24 is smaller than the distance between the rotation center of the drive wheel 231 and the first tangent plane 24. As a result, the radius of the drive wheel 231 is larger than the radius of the auxiliary wheel 232. This allows the drive wheel 231 to contact the surface to be cleaned 30 while the auxiliary wheel 232 does not contact the surface to be cleaned 30 when the floor brush assembly 20 is laid flat. In addition, the size of the auxiliary wheel 232 can be made smaller, reducing the installation space of the auxiliary wheel 232 on the housing 21, which is beneficial for freeing up the internal space of the housing 21, improving the structural compactness of the floor brush assembly 20, and also facilitating the reduction of the size of the floor brush assembly 20.

[0069] In some embodiments, when the cleaning device 1 performs a cleaning task on the surface to be cleaned 30, the floor brush assembly 20 has a first posture, the rotation center of the auxiliary wheel 232 is located on the side of the rotation center of the driving wheel 231 away from the cleaning member 22, and the radius of the auxiliary wheel 232 is smaller than the radius of the driving wheel 231. This configuration enables the driving wheel 231 to contact the surface to be cleaned 30 while the auxiliary wheel 232 does not contact the surface to be cleaned when the floor brush assembly 20 is in the first posture, and the auxiliary wheel 232 to contact the surface to be cleaned 30 while the driving wheel 231 does not contact the surface to be cleaned when the floor brush assembly 20 is in the second posture. In addition, the size of the auxiliary wheel 232 can be made smaller, reducing the installation space of the auxiliary wheel 232 on the housing 21, which is conducive to freeing up the internal space of the housing 21, improving the structural compactness of the floor brush assembly 20, and also helping to reduce the size of the floor brush assembly 20.

[0070] Figure 6 A cross-sectional view showing the floor brush assembly 20 in a first posture according to an embodiment of the present disclosure is shown. Figure 7 Schematic diagram showing the positional relationship between the auxiliary wheel 232 and the driving wheel 231 according to an embodiment of the present disclosure, Figure 8 Schematic diagram showing the positional relationship between the auxiliary wheel 232 and the driving wheel 231 according to an embodiment of the present disclosure. In some embodiments, see Figures 6 to 8 The radius of the driving wheel 231 is R1, the distance between the central axis of the driving wheel 231 and the central axis of the auxiliary wheel 232 is D, and R1>D. In other words, when observing the cleaning device 1 from the second direction Y, the central axis of the auxiliary wheel 232 falls within the orthographic projection range of the driving wheel 231, so that a smaller portion of the auxiliary wheel 232 protrudes from the driving wheel 231, making the auxiliary wheel 232 of the present disclosure smaller in size, which helps to reduce the internal space of the housing 21 and improve the structural compactness of the floor brush assembly 20, thereby reducing the size of the floor brush assembly 20.

[0071] In the embodiment of the present disclosure, the third tangent plane 26 can be arranged to be located on the side of the second tangent plane 25 away from the cleaning member 22, so that the auxiliary wheel 232 can, on the one hand, meet the requirement that when observing the cleaning device 1 from the second direction Y, the center axis of the auxiliary wheel 232 falls within the positive projection range of the driving wheel 231, and on the other hand, the third tangent plane 26 is located on the side of the second tangent plane 25 away from the cleaning member 22, thereby making the distance between the second tangent plane 25 and the third tangent plane 26 smaller than the radius of the auxiliary wheel 232, so that the auxiliary wheel 232 of the present disclosure can, on the one hand, be supported on the surface to be cleaned 30 when the floor brush assembly 20 is in the second posture, and on the other hand, a smaller part of the auxiliary wheel 232 can protrude from the driving wheel 231, so that the size of the auxiliary wheel 232 of the present disclosure is smaller, which is conducive to reducing the internal space of the shell 21.

[0072] In this embodiment, there is no specific limitation on the values ​​of R1 and D, as long as R1 is greater than D.

[0073] In some embodiments, see Figures 6 to 8 In the first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel 232 and the first tangent plane 24 is L2. When observing the floor brush assembly 20 along the second direction Y, the maximum distance between the outer peripheral wall of the driving wheel 231 and the outer peripheral wall of the auxiliary wheel 232 is L1. The maximum distance between the outer peripheral wall of the driving wheel 231 and the outer peripheral wall of the auxiliary wheel 232 is the maximum distance that can be achieved between the driving wheel 231 and the surface to be cleaned 30 in the second posture, and L1>L2.

[0074] In this embodiment, there is no specific limitation on the values ​​of L1 and L2, as long as L1 is greater than L2.

[0075] Through the above embodiment, the distance between the auxiliary wheel 232 and the surface to be cleaned 30 in the first posture can be made smaller than the distance between the driving wheel 231 and the surface to be cleaned 30 in the second posture, so that the driving wheel 231 in the second posture is as far away from the ground as possible, thereby ensuring that the driving wheel 231 in the second posture does not touch the surface to be cleaned 30.

[0076] In some embodiments, see Figures 6 to 8 In the first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel 232 and the first tangent plane 24 is L2. In the second posture, the end of the floor brush assembly 20 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, and the end of the floor brush assembly 20 where the wheel assembly 23 is located is in contact with the surface to be cleaned 30. The floor brush assembly 20 and the surface to be cleaned 30 form an included angle θ. The distance between the lowest point of the outer peripheral wall of the driving wheel 231 and the surface to be cleaned 30 is L3.

[0077] L3, L2, θ satisfy: when 35°≤θ≤65°, L3>L2

[0078] Specifically, see Figure 1 and Figure 3 , the angle θ is the angle between the floor brush assembly 20 and the surface to be cleaned 30. In the second posture, the distance L3 between the driving wheel 231 and the surface to be cleaned 30 is related to the angle at which the user lifts the floor brush assembly 20. Generally speaking, when an adult holds the handle 11 to put the floor brush assembly 20 in the second posture, the adult's arm naturally droops or slightly bends. At this time, the main body 10 and the surface to be cleaned 30 have an angle β. Depending on the length of the main body 10 and the height of the handle 11 from the ground in the second posture, β is between 35° and 65°. The extension direction of the main body 10 in the second posture and the angle between the housing 21 are fixed and approximately 90°. Therefore, θ+β needs to be 90°. When 35°≤β≤65° is satisfied, θ needs to satisfy 35°≤θ≤65°.

[0079] Through the above embodiment, the distance between the auxiliary wheel 232 and the surface to be cleaned 30 in the first posture can be made smaller than the distance between the driving wheel 231 and the surface to be cleaned 30 in the second posture, so that the driving wheel 231 in the second posture is as far away from the ground as possible, thereby ensuring that the driving wheel 231 in the second posture does not touch the surface to be cleaned 30.

[0080] In this embodiment, there is no specific limitation on the values ​​of L3, L2, and θ, as long as L3 is greater than L2.

[0081] It can be understood that when the floor brush assembly 20 is in the second posture, the distance between the lowest point of the outer peripheral wall of the driving wheel 231 and the surface to be cleaned 30 is L3, L3≤L1, when the connecting line of the rotation center of the driving wheel 231 and the rotation center of the auxiliary wheel 232 is perpendicular to the surface to be cleaned 30, L3=L1, and at this time the distance between the lowest point of the outer peripheral wall of the driving wheel 231 and the surface to be cleaned 30 is L1, which can make the distance between the lowest point of the outer peripheral wall of the driving wheel 231 and the surface to be cleaned 30 reach the maximum distance, and make the driving wheel 231 in the second posture as far away from the surface to be cleaned 30 as possible, so as to avoid the driving wheel 231 from colliding with the surface to be cleaned 30 when the floor brush assembly 20 moves in the second posture.

[0082] In some embodiments, see Figure 2, the floor brush assembly 20 also includes two supporting wheels 27, which are adjacent to the cleaning member 22 and are respectively arranged at opposite ends of the housing 21 in the second direction Y. When the cleaning device 1 performs the cleaning task of the surface to be cleaned 30, the floor brush assembly 20 has a first posture, and the driving wheel 231 and the two supporting wheels 27 form a three-point support for the bottom surface of the housing 21. The embodiment of the present disclosure supports the floor brush assembly 20 on the surface to be cleaned 30 by providing two supporting wheels 27, so that the cleaning device 1 in the first posture can be stably supported on the surface to be cleaned 30. Secondly, it can avoid the situation where the floor brush assembly 20 collides with the surface to be cleaned 30 when the floor brush assembly 20 falls to one side, thereby preventing the floor brush assembly 20 from being damaged.

[0083] Illustratively, two second accommodating grooves are provided at the bottom of the shell 21, the two second accommodating grooves are spaced apart along the second direction Y, and the two second accommodating grooves are respectively provided at the opposite ends of the cleaning member 22 in the second direction Y, a part of the structure of the two support wheels 27 is respectively provided in the two second accommodating grooves, and the two support wheels 27 are rotatably provided in the second accommodating grooves through the rotating shaft.

[0084] Through the above embodiment, the floor brush assembly 20 in the first posture can be supported on the surface to be cleaned 30 by the driving wheel 231 and the two supporting wheels 27, so that the floor brush assembly 20 in the first posture can achieve three-point support during normal operation, so that the floor brush assembly 20 in the first posture can be stably supported on the surface to be cleaned 30 during normal operation. Secondly, since the two supporting wheels 27 are arranged at both ends of the cleaning member 22 in the second direction Y, when the floor brush assembly 20 in the first posture is turning, the position of the floor brush assembly 20 adjacent to the driving wheel 231 still has the possibility of tipping over. Two auxiliary wheels 232 are respectively provided at both ends of the second direction Y, which are opposite to the first tangent plane 24, so that when the floor brush assembly 20 is adjacent to the driving wheel 231, the auxiliary wheel 232 on the tilting side contacts the surface to be cleaned 30, thereby avoiding the collision between the floor brush assembly 20 and the surface to be cleaned 30, thereby avoiding damage to the shell 21. On the one hand, the present disclosure ensures the stability of the floor brush assembly 20 in the first posture when moving forward or backward, and on the other hand, ensures the stability of the floor brush assembly 20 in the first posture when turning, thereby avoiding the collision between the floor brush assembly 20 and the surface to be cleaned 30, and improving the service life of the floor brush assembly 20.

[0085] It should be noted that, in the second posture of the floor brush assembly 20 , the two supporting wheels 27 are also lifted away from the surface to be cleaned 30 following the cleaning member 22 .

[0086] In some embodiments, see Figure 4A mounting groove 211 is provided at the bottom of the shell 21 , the driving wheel 231 is at least partially disposed in the mounting groove 211 , and at least a portion of the driving wheel 231 is located inside the shell 21 .

[0087] Exemplarily, the mounting groove 211 is formed by a depression at the bottom of the housing 21 . The mounting groove 211 is centrally disposed in the housing 21 in the second direction Y, and the rotating shaft of the driving wheel 231 is disposed in the mounting groove 211 .

[0088] Through the above embodiment, the driving wheel 231 can be embedded in the installation groove 211 as much as possible. While the driving wheel 231 can assist the floor brush assembly 20 in moving forward or backward, the size ratio of the driving wheel 231 extending outside the shell 21 is reduced, thereby reducing the space between the bottom of the shell 21 and the surface to be cleaned 30 in the first posture, and thus making the bottom of the shell 21 in the first posture fit the surface to be cleaned 30 as much as possible, ensuring that the cleaning device 1 can lie flat in the first posture.

[0089] Figure 9 A schematic diagram showing the structure of the first driving structure according to an embodiment of the present disclosure is shown. In some embodiments, see Figure 9 The first driving mechanism 233 includes: a first motor 2331 and a transmission mechanism 2332. The output shaft of the first motor 2331 is connected to the driving wheel 231 through the transmission mechanism 2332. The axis Z1 of the output shaft of the first motor 2331 is located above the rotation axis Z2 of the driving wheel 231.

[0090] In the embodiment of the present disclosure, there is no specific limitation on the model and specifications of the first motor 2331; the transmission mechanism 2332 can adopt any form of reducer, and there is no specific limitation on the transmission ratio of the reducer.

[0091] Exemplarily, the output shaft of the first motor 2331 is coaxially arranged with the input end of the reducer, the output end of the reducer is arranged off-axis with the input end of the reducer, and the output end of the reducer is arranged coaxially with the central axis of the drive wheel 231. In addition, the central axis of the first motor 2331 and the central axis of the reducer can be coaxially arranged, and the outer diameter of the first motor 2331 is substantially the same as the outer diameter of the reducer, thereby improving the integration of the first motor 2331 and the reducer. The central axis of the reducer and the central axis of the drive wheel 231 can be off-axis, and the top of the reducer is substantially flush with the top of the drive wheel 231. Among them, the first motor 2331 and the reducer can be installed together in the housing 21.

[0092] By adopting the above embodiment, the driving wheel 231 is eccentrically arranged relative to the first motor 2331 and the transmission mechanism 2332. On the one hand, the rotation center of the driving wheel 231 can be lowered, and a smaller driving wheel 231 can be used; on the other hand, the first motor 2331 is raised to ensure that the part of the driving wheel 231 extending from the mounting groove 211 has a certain height, thereby ensuring that there is a certain height between the bottom of the shell 21 and the surface to be cleaned 30, thereby ensuring the movement reliability of the floor brush assembly 20; on the other hand, the height space occupied by the driving wheel 231 inside the shell 21 can be reduced, which is beneficial to improving the structural compactness inside the shell 21 and also beneficial to reducing the height size of the shell 21.

[0093] In some embodiments, see Figure 1 、 Figure 4 as well as Figure 6 When the cleaning device 1 performs the cleaning task of the surface to be cleaned 30, the floor brush assembly 20 has a first posture. The cleaning member 22 and the driving wheel 231 in the first posture are in contact with the surface to be cleaned 30. When the floor brush assembly 20 moves in the first posture, the driving wheel 231 rotates, and at least one auxiliary wheel 232 does not rotate.

[0094] For example, when the floor brush assembly 20 moves in a first posture and the floor brush assembly 20 is in a balanced state and is not tilted toward one side, the cleaning member 22 and the driving wheel 231 of the floor brush assembly 20 in the first posture are in contact with the surface to be cleaned 30, and at this time, both auxiliary wheels 232 are disengaged from the surface to be cleaned 30. When the floor brush assembly 20 moves in a first posture and the cleaning device 1 is in an unbalanced state and tilted toward one side, the cleaning member 22 and the driving wheel 231 of the floor brush assembly 20 in the first posture are in contact with the surface to be cleaned 30, and at this time, the auxiliary wheel 232 on the tilted side is in contact with the surface to be cleaned 30.

[0095] Through the above embodiment, on the one hand, when the user pushes and pulls the floor brush assembly 20 when the floor brush assembly 20 is in a balanced state, the user will not be subject to the resistance to the floor brush assembly 20 caused by the friction between the auxiliary wheel 232 and the surface to be cleaned 30, and there is no need to apply greater force. On the other hand, when the floor brush assembly 20 tilts on one side due to weight imbalance, the auxiliary wheel 232 on the tilted side contacts the surface to be cleaned 30, avoiding the situation where the shell 21 collides with the surface to be cleaned 30 when the floor brush assembly 20 tilts on one side, thereby causing damage to the shell 21.

[0096] In some embodiments, see Figure 3 and Figure 5The floor brush assembly 20 has a second posture. In the second posture, one end of the floor brush assembly 20 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, and one end of the floor brush assembly 20 where the wheel assembly 23 is located is in contact with the surface to be cleaned 30. When the floor brush assembly 20 moves in the second posture, the two auxiliary wheels 232 rotate, and the driving wheel 231 does not rotate.

[0097] Through the above embodiment, the two auxiliary wheels 232 of the floor brush assembly 20 in the second posture can be in contact with the surface to be cleaned 30 and the driving wheel 231 can be separated from the surface to be cleaned 30, so that when the user pushes and pulls the floor brush assembly 20 in the second posture, there will be no resistance from the reducer of the driving wheel 231, which makes it easier for the user to move the cleaning device 1.

[0098] In some optional examples, the cleaning member 22 is detachably mounted on the bottom of the housing 21, and the cleaning device 1 may include multiple cleaning members 22 with different media on the outer peripheral walls, so that the multiple cleaning members 22 have different cleaning properties. With this arrangement, the user can select a cleaning member 22 with corresponding cleaning properties according to the properties of the surface 30 to be cleaned and install it on the housing 21 to meet specific cleaning needs. In the embodiment of the present disclosure, there is no specific limitation on the number of cleaning members 22 provided on the bottom of the housing 21. For example, the bottom of the housing 21 may be provided with only one cleaning member 22, or multiple cleaning members 22 arranged side by side may be provided.

[0099] See also Figures 1 to 9 The embodiment of the present disclosure also provides another cleaning device 1, which includes: a main body 10 and a floor brush assembly 20. Specifically, the floor brush assembly 20 is rotatably connected to the main body 10, and the floor brush assembly 20 includes a shell 21, a cleaning member 22, and a wheel assembly 23. The cleaning member 22 is arranged at one end of the shell 21, and the wheel assembly 23 is arranged at an end of the shell 21 away from the cleaning member 22. The cleaning member 22 and the wheel assembly 23 are spaced apart along the first direction X. The wheel assembly 23 includes a first driving mechanism 233, a driving wheel 231 and two auxiliary wheels 232. The two auxiliary wheels 232 are located on opposite sides of the driving wheel 231 in the second direction Y, and the driving wheel 231 is transmission-connected to the first driving mechanism 233. The first direction X and the second direction Y intersect. When the cleaning device 1 performs a cleaning task on the surface 30 to be cleaned, the floor brush assembly 20 has a first posture, the driving wheel 231 is in contact with the driving surface, and at least one auxiliary wheel 232 is detached from the driving surface. The floor brush assembly 20 also has a second posture. In the second posture, one end of the floor brush assembly 20 where the cleaning member 22 is located is lifted away from the surface to be cleaned 30, the two auxiliary wheels 232 are in contact with the driving surface, and the driving wheel 231 is separated from the driving surface.

[0100] According to the cleaning device 1 of the embodiment of the present disclosure, the floor brush assembly 20 in the first posture has the following advantages: on the one hand, when the user pushes and pulls the cleaning device 1 when the cleaning device 1 is in a balanced state, the user will not be subject to the resistance brought to the cleaning device 1 by the auxiliary wheel 232, and there is no need to apply greater force; on the other hand, when the floor brush assembly 20 tilts on one side due to weight imbalance, the auxiliary wheel 232 on the tilted side contacts the surface to be cleaned 30, thereby preventing the shell 21 from colliding with the surface to be cleaned 30 when the cleaning device 1 tilts on one side, thereby causing damage to the shell 21. In the second posture, the two auxiliary wheels 232 of the floor brush assembly 20 contact the surface to be cleaned 30 and the driving wheel 231 is disengaged from the surface to be cleaned 30, so that when the user pushes and pulls the cleaning device 1 in the second posture, the user will not be subject to the resistance of the reducer of the driving wheel 231, which makes it easier for the user to push and pull the cleaning device 1.

[0101] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0102] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0103] In this disclosure, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0104] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0105] The disclosure above provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0106] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this disclosure, and such modifications or substitutions should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A cleaning device, characterized in that: include: host body; A floor brush assembly is rotatably connected to the main body, and the floor brush assembly includes a shell, a cleaning member, and a wheel assembly; The cleaning member is arranged at one end of the housing, the wheel assembly is arranged at one end of the floor brush assembly away from the cleaning member, and the cleaning member and the wheel assembly are spaced apart along a first direction; The wheel assembly includes a first driving mechanism, a driving wheel, and at least two auxiliary wheels, wherein the driving wheel is centrally arranged at an end of the floor brush assembly away from the cleaning member, and at least two auxiliary wheels are located on opposite sides of the driving wheel in the second direction, and the driving wheel is in transmission connection with the first driving mechanism; The first direction and the second direction intersect.

2. The cleaning device according to claim 1, characterized in that When the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture; in the first posture, the driving wheel has a contact point in contact with the surface to be cleaned, the contact point is recorded as a reference point, and the tangent plane passing through the reference point is recorded as a first tangent plane; The outer peripheral walls of the two auxiliary wheels are respectively separated from the first tangent plane.

3. The cleaning device according to claim 2, characterized in that The driving wheel has a second tangent plane perpendicular to the first tangent plane on a side away from the cleaning member, and the second tangent plane is tangent to the outer peripheral wall of the driving wheel; the two auxiliary wheels have a third tangent plane perpendicular to the first tangent plane on a side away from the cleaning member, and the third tangent plane is tangent to the outer peripheral walls of the two auxiliary wheels respectively; wherein the third tangent plane is located on the side of the second tangent plane away from the cleaning member.

4. The cleaning device according to claim 2, characterized in that The distance between the rotation center of the auxiliary wheel and the first tangent plane is smaller than the distance between the rotation center of the driving wheel and the first tangent plane.

5. The cleaning device according to claim 1, characterized in that When the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture, the rotation center of the auxiliary wheel is located on the side of the rotation center of the driving wheel away from the cleaning member, and the radius of the auxiliary wheel is smaller than the radius of the driving wheel.

6. The cleaning device according to claim 4, characterized in that The radius of the driving wheel is R1, the distance between the central axis of the driving wheel and the central axis of the auxiliary wheel is D, and R1>D.

7. The cleaning device according to claim 2, characterized in that In the first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel and the first tangent plane is L2; When observing the floor brush assembly along the second direction, the maximum distance between the outer peripheral wall of the driving wheel and the outer peripheral wall of the auxiliary wheel is L1, and L1>L2.

8. The cleaning device according to claim 2, characterized in that In the first posture, the minimum distance between the outer peripheral wall of the auxiliary wheel and the first tangent plane is L2; The floor brush assembly further has a second posture, in which one end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, the two auxiliary wheels are in contact with the surface to be cleaned, the floor brush assembly and the surface to be cleaned form an angle θ, and the distance between the lowest point of the outer peripheral wall of the driving wheel and the surface to be cleaned is L3; The L3, L2, and θ satisfy the following: when 35°≤θ≤65°, L3>L2.

9. The cleaning device according to claim 1, characterized in that The driving wheel is centrally arranged on the housing in the second direction, and the second direction is parallel to the rotation axis of the cleaning member.

10. The cleaning device according to claim 1, characterized in that The floor brush assembly also includes two supporting wheels, which are adjacent to the cleaning member and are respectively arranged at opposite ends of the shell in the second direction; when the cleaning device performs the cleaning task of the surface to be cleaned, the floor brush assembly has a first posture, and the driving wheel and the two supporting wheels form a three-point support for the bottom surface of the shell.

11. The cleaning device according to claim 1, characterized in that The bottom of the shell is provided with a mounting groove, the driving wheel is at least partially provided in the mounting groove, and at least a portion of the driving wheel is located inside the shell.

12. The cleaning device according to claim 1, characterized in that The first driving mechanism includes: a first motor and a transmission mechanism, the output shaft of the first motor is connected to the driving wheel through the transmission mechanism; the output shaft of the first motor is located above the rotation axis of the driving wheel.

13. The cleaning device according to any one of claims 1 to 12, characterized in that: When the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture. When the floor brush assembly moves in the first posture, the driving wheel rotates and at least one of the auxiliary wheels does not rotate.

14. The cleaning device according to any one of claims 1 to 12, characterized in that: The floor brush assembly has a second posture, in which the end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, and the two auxiliary wheels are in contact with the surface to be cleaned; When the floor brush assembly moves in the second posture, the two auxiliary wheels rotate, and the driving wheel does not rotate.

15. A cleaning device, characterized in that: include: host body; A floor brush assembly is rotatably connected to the main body, and the floor brush assembly includes a shell, a cleaning member, and a wheel assembly; The cleaning member is arranged at one end of the housing, the wheel assembly is arranged at an end of the housing away from the cleaning member, and the cleaning member and the wheel assembly are spaced apart along a first direction; The wheel assembly includes a first driving mechanism, a driving wheel, and two auxiliary wheels, wherein the two auxiliary wheels are located on opposite sides of the driving wheel in the second direction, and the driving wheel is in transmission connection with the first driving mechanism; wherein the first direction and the second direction intersect; When the cleaning device performs a cleaning task on the surface to be cleaned, the floor brush assembly has a first posture, the driving wheel is in contact with the driving surface, and at least one of the auxiliary wheels is disengaged from the driving surface; The floor brush assembly also has a second posture. In the second posture, one end of the floor brush assembly where the cleaning member is located is lifted away from the surface to be cleaned, the two auxiliary wheels are in contact with the driving surface, and the driving wheel is disengaged from the driving surface.

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