Roller brush assembly, cleaning apparatus and cleaning system

Abstract

A roller brush assembly (151), a cleaning apparatus (10) and a cleaning system. The roller brush assembly (151) comprises at least two roller brushes (1511), wherein each roller brush (1511) comprises a connecting end and a free end; the free ends of the at least two roller brushes (1511) are oppositely arranged spaced apart from each other; and there is a rotational speed difference between two oppositely arranged roller brushes (1511), thereby improving the effect of the roller brush assembly (151) in preventing hair tangling.

Description

Rolling brush assembly, cleaning device and cleaning system

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority to Chinese Patent Application Nos. 202421529917.6, 202410869770.3 and 202421529942.4, filed on June 28, 2024, the disclosures of which are hereby incorporated by reference in their entirety as part of the present disclosure. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of cleaning devices, and in particular, to a rolling brush assembly, a cleaning device and a cleaning system. BACKGROUND

[0004] With the development of modern society, in order to save time and maintain household hygiene, more and more people begin to purchase cleaning devices in order to clean household hygiene in time and conveniently. Cleaning devices can automatically complete the cleaning work of the ground in the room by means of certain artificial intelligence.

[0005] The cleaning device in the related art is mainly a sweeping robot. During the execution of the cleaning task by the sweeping robot, hair and other foreign matters are easy to be entangled on the rolling brush.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information which does not constitute prior art known to those of ordinary skill in the art.

[0007] SUMMARY

[0008] The present disclosure aims to provide a rolling brush assembly, a cleaning device and a cleaning system.

[0009] According to one aspect of the present disclosure, a rolling brush assembly is provided, which comprises:

[0010] at least two rolling brushes, each of the rolling brushes comprising a connecting end and a free end, the free ends of the at least two rolling brushes being oppositely spaced, and the two oppositely arranged rolling brushes having a rotational speed difference.

[0011] In an exemplary embodiment of the present disclosure, the rotational speed ratio of the two oppositely arranged rolling brushes is 1:1.05-1:1.2.

[0012] In an exemplary embodiment of the present disclosure, the rotational speed difference of the two oppositely arranged rolling brushes is 50 r / min-350 r / min.

[0013] In an exemplary embodiment of the present disclosure, the two oppositely arranged rolling brushes have the same rotational direction.

[0014] In an exemplary embodiment of the present disclosure, the rolling brush assembly further comprises:

[0015] a driving device;

[0016] a first transmission assembly connecting the driving device and one of the two oppositely arranged rolling brushes;

[0017] a second transmission assembly connecting the driving device and the other of the two oppositely arranged rolling brushes;

[0018] wherein the transmission ratio of the first transmission assembly and the second transmission assembly is different.

[0019] In an exemplary embodiment of the present disclosure, the rolling brush assembly further comprises:

[0020] a first driving device and a first transmission assembly connecting the first driving device and one of the two oppositely arranged rolling brushes;

[0021] a second driving device and a second transmission assembly connecting the second driving device and the other of the two oppositely arranged rolling brushes;

[0022] wherein the transmission ratio of the first transmission assembly and the second transmission assembly is different, and / or the rotation speed of the output shafts of the first driving device and the second driving device is different.

[0023] In an exemplary embodiment of the present disclosure, the first transmission assembly and / or the second transmission assembly is a gear transmission assembly.

[0024] In an exemplary embodiment of the present disclosure, the end surface of the free end of at least one of the two oppositely arranged rolling brushes is obliquely arranged relative to the rotation axis of the rolling brush.

[0025] In an exemplary embodiment of the present disclosure, the end surface of the free end of the rolling brush is a plane, an arc surface or a wavy surface.

[0026] In an exemplary embodiment of the present disclosure, the end surfaces of the free ends of the two oppositely arranged rolling brushes are of the same surface type.

[0027] In an exemplary embodiment of the present disclosure, the rolling brush comprises a shaft and an end cap arranged on the shaft to form the free end of the rolling brush, and the outer surface of the end cap forms the end surface of the free end.

[0028] In an exemplary embodiment of the present disclosure, the rolling brush assembly further comprises:

[0029] a blocking piece, at least part of which is located between two of the brush rolls arranged oppositely.

[0030] In an exemplary embodiment of the present disclosure, the brush roll assembly further comprises:

[0031] a brush roll cabin corresponding to the at least two brush rolls, and the blocking piece is arranged on the inner wall of the brush roll cabin.

[0032] In an exemplary embodiment of the present disclosure, the brush roll cabin is provided with a dust collecting port for communicating with a dust box, and the blocking piece is arranged on the inner wall of the brush roll cabin away from the dust collecting port and opposite to the dust collecting port.

[0033] In an exemplary embodiment of the present disclosure, at the bottom of the brush roll assembly, the brush roll rotates from a first side to a second side of the brush roll cabin, and the blocking piece is arranged on the first side.

[0034] In an exemplary embodiment of the present disclosure, the blocking piece comprises a connecting section and a blocking section, the connecting section is connected to the inner wall of the brush roll cabin, and the blocking section is connected to the connecting section, and the extending direction of the blocking section is different from that of the connecting section.

[0035] In an exemplary embodiment of the present disclosure, the brush roll assembly further comprises:

[0036] a support comprising a sleeving rod, and the brush roll is sleeved on the sleeving rod.

[0037] In an exemplary embodiment of the present disclosure, the sleeving rod comprises an inner rod and an outer rod, and the outer rod is sleeved on the inner rod and rotationally connected to the inner rod.

[0038] In an exemplary embodiment of the present disclosure, a bearing is sleeved on the inner rod, and the outer rod is rotationally connected to the inner rod through the bearing.

[0039] In an exemplary embodiment of the present disclosure, a sleeving hole is arranged on the brush roll, and the brush roll is sleeved on the sleeving rod through the sleeving hole.

[0040] In an exemplary embodiment of the present disclosure, the shapes of the sleeving holes on the two brush rolls arranged oppositely are different, and the shape of the sleeving hole on the brush roll matches that of the corresponding sleeving rod.

[0041] In an exemplary embodiment of the present disclosure, the brush roll comprises a shaft rod and a cleaning piece arranged on the shaft rod, and the cleaning piece comprises a blade and / or a tuft.

[0042] In an example embodiment of the present disclosure, when the cleaning member comprises a blade, the shaft and the blade are integrally formed.

[0043] In an example embodiment of the present disclosure, the shaft and the blade are made by double injection molding, in-mold injection, liquid injection or oil pressure forming.

[0044] In an example embodiment of the present disclosure, when the cleaning member comprises a blade and a tuft, the blade is a plurality of blades, the plurality of blades are arranged along the circumference of the shaft, and the tuft is arranged between adjacent blades in the circumferential direction of the shaft.

[0045] In an example embodiment of the present disclosure, when the cleaning member comprises a tuft, the tuft comprises a fixed end and a movable end, the fixed end is connected to the shaft, the movable end extends away from the shaft, and is inclined towards the free end of the roller brush.

[0046] According to a second aspect of the present disclosure, there is provided a cleaning device comprising the roller brush assembly as described above.

[0047] According to a third aspect of the present disclosure, there is provided a cleaning system comprising:

[0048] a cleaning device as described above;

[0049] a base station for parking the cleaning device.

[0050] The roller brush assembly provided by the present disclosure effectively improves the stability during cleaning by providing at least two roller brushes compared to providing only one roller brush. By providing a gap between the free ends of the two roller brushes, interference or jamming of debris between the two oppositely arranged roller brushes is avoided. Since hair on the ground is easily entangled on the roller brush during cleaning operation and cannot be self-disengaged, the user needs to manually remove the hair entangled on the roller brush, which greatly reduces the user experience. By providing a speed difference between the two roller brushes, when hair is entangled on the roller brush, the hair entangled on the roller brush can be pulled out, thereby achieving hair flinging into the dust box and improving user experience.

[0051] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0052] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure. It is to be understood that the drawings are only schematic, and that they do not purport to be to scale with respect to one another. The embodiments will be described with reference to the drawings in conjunction with a detailed description.

[0053] Fig. 1 is a front view of a cleaning device according to an embodiment of the present disclosure.

[0054] Fig. 2 is a back view of a cleaning device according to an embodiment of the present disclosure.

[0055] Fig. 3 is a view of a roller brush assembly according to an embodiment of the present disclosure.

[0056] Fig. 4 is another view of a roller brush assembly according to an embodiment of the present disclosure.

[0057] Fig. 5 is a view of a first roller brush and a second roller brush according to an embodiment of the present disclosure.

[0058] Fig. 6 is a view of a first roller brush according to an embodiment of the present disclosure.

[0059] Fig. 7 is a view of a second roller brush according to an embodiment of the present disclosure.

[0060] Fig. 8 is a view of a driving device driving a first roller brush and a second roller brush according to an embodiment of the present disclosure.

[0061] Fig. 9 is a view of a first transmission assembly according to an embodiment of the present disclosure.

[0062] Fig. 10 is a view of a second transmission assembly according to an embodiment of the present disclosure.

[0063] Fig. 11 is a view of a first driving device and a second driving device driving a first roller brush and a second roller brush according to an embodiment of the present disclosure.

[0064] Fig. 12 is a view of an end face shape of a first roller brush and a second roller brush according to an embodiment of the present disclosure.

[0065] Fig. 13 is a view of an end face shape of a first roller brush and a second roller brush according to another embodiment of the present disclosure.

[0066] Fig. 14 is a view of an end face shape of a first roller brush and a second roller brush according to yet another embodiment of the present disclosure.

[0067] Fig. 15 is a view of a first shaft according to an embodiment of the present disclosure.

[0068] FIG. 16 is a schematic view of a second shaft according to an embodiment of the present disclosure.

[0069] FIG. 17 is a schematic view of a first roller brush and a second roller brush with a barrier therebetween according to an embodiment of the present disclosure.

[0070] FIG. 18 is a schematic view of a roller brush cabin with a barrier therein according to an embodiment of the present disclosure.

[0071] FIG. 19 is a schematic view of a barrier according to an embodiment of the present disclosure.

[0072] FIG. 20 is a schematic view of a first roller brush and a first support according to an embodiment of the present disclosure.

[0073] FIG. 21 is a schematic view of a first support according to an embodiment of the present disclosure.

[0074] FIG. 22 is an exploded view of a first support according to an embodiment of the present disclosure.

[0075] FIG. 23 is a schematic view of a second roller brush and a second support according to an embodiment of the present disclosure.

[0076] FIG. 24 is a schematic view of a second support according to an embodiment of the present disclosure.

[0077] FIG. 25 is an exploded view of a second support according to an embodiment of the present disclosure.

[0078] FIG. 26 is a schematic view of a first set of interface holes on a first roller brush according to an embodiment of the present disclosure.

[0079] FIG. 27 is a schematic view of a second set of interface holes on a second roller brush according to an embodiment of the present disclosure.

[0080] FIG. 28 is a schematic view of a cleaning system according to an embodiment of the present disclosure.

[0081] Legend:

[0082] 10, cleaning device; 11, device body; 12, driving module; 13, sensing module; 14, control module; 15, cleaning module; 16, energy module; 17, human-computer interaction module; 121, driving wheel assembly; 122, steering wheel;

[0083] 151 brush roll assembly; 1511 brush roll; 15111 first brush roll; 151111 first shaft; 151112 first blade; 151113 first tuft; 151114 first end cap; 151115 first socket; 15112 second brush roll; 151121 second shaft; 151122 second blade; 151123 second tuft; 151124 second end cap; 151125 second socket; 1512 brush roll cover; 15121 brush roll chamber; 15122 dust collection opening; 15131 drive device; 15132 first transmission assembly; 151321 first drive gear; 151322 first connecting gear; 151323 second connecting gear; 151324 first driven gear; 151325 fourth connecting gear; 151326 fifth connecting gear; 15133 second transmission assembly; 151331 second driven gear; 151332 third connecting gear; 151333 third driven gear; 15134 transmission rod; 15135 first drive device; 15136 second drive device; 1514 blocking member; 15141 connecting section; 15142 blocking section; 1515 first bracket; 15151 first outer rod; 15152 first inner rod; 15153 first rubber core; 15154 first bearing; 15155 first fastener; 1516 second bracket; 15161 second outer rod; 15162 second inner rod; 15163 second rubber core; 15164 second bearing; 15165 second fastener; 152 edge brush; 153 cleaning head; 20 base station. DETAILED DESCRIPTION

[0084] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will be omitted from descriptions of subsequent figures.

[0085] Although relative terms such as "upper", "lower", etc. are used herein to describe one component's relationship to another component of a figure, such terminology is used for convenience only and is not intended to limit the scope of the disclosure to the examples described herein. It is to be understood that if a figure is turned upside down, the component described as being on "top" would then be on the "bottom". When a structure is on another structure, it can mean that the structure is formed integrally with the other structure, or that the structure is "directly" on the other structure, or that the structure is "indirectly" on the other structure via another structure.

[0086] The terms "one", "a", "the", "said", and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusion of one or more elements / components / etc. in the description of a process, a method, a product, etc., and that the description does not exclude additional elements / components / etc.; the terms "first", "second", and "third", etc. are used only as labels, and do not limit the number of objects to which the labels are applied.

[0087] Embodiments of the present disclosure provide a cleaning device, which can be a robot vacuum cleaner, a robot mop, a handheld robot vacuum cleaner, a handheld robot mop, etc. As shown in FIGS. 1 and 2, the present disclosure will be exemplarily described below with a cleaning device 10 as a robot mop, which can include a device body 11, a driving module 12, a sensing module 13, a control module 14, a cleaning module 15, an energy module 16, a human-machine interaction module 17, etc.

[0088] In some embodiments, the device body 11 is configured to automatically move along a target direction on a travel surface, which can be a surface to be cleaned by the cleaning device 10. The cleaning device 10 can be a robot mop, and the cleaning device 10 works on a ground, which is the above-mentioned travel surface.

[0089] In order to more clearly describe the behavior of the cleaning device 10, the following directional definitions are made: the cleaning device 10 can travel on the ground by various combinations of movements relative to the following three mutually perpendicular axes defined by the device body 11: a front-rear axis X, a lateral axis Y, and a central vertical axis Z. The forward driving direction along the front-rear axis X is denoted as "forward", and the rearward driving direction along the front-rear axis X is denoted as "rearward". The cleaning device 10 can rotate about the Y axis. When the forward portion of the cleaning device 10 is tilted upward and the rearward portion is tilted downward, it is "pitched up", and when the forward portion of the cleaning device 10 is tilted downward and the rearward portion is tilted upward, it is "pitched down". In addition, the cleaning device 10 can rotate about the Z axis. In the forward direction of the cleaning device 10, when the cleaning device 10 is tilted to the right side of the axis, it is "turned right", and when the cleaning device 10 is tilted to the left side of the Y axis, it is "turned left".

[0090] In some embodiments, the driving module 12 includes a driving wheel assembly 121, and the driving module 12 can simultaneously control the left wheel and the right wheel. In order to more accurately control the movement of the machine, it is preferred that the driving module 12 respectively includes a left driving wheel assembly and a right driving wheel assembly. The left and right driving wheel assemblies are symmetrically arranged along the lateral axis Y defined by the device body 11.

[0091] In some embodiments, as shown in FIG. 2, in order to enable the automatic cleaning device 10 to move more stably on the ground or have stronger movement ability, the automatic cleaning device 10 can include one or more steering wheels 122; the steering wheels 122 can be driven wheels or driving wheels, and the structural forms thereof include but are not limited to universal wheels, and the steering wheels 122 can be located in front of the driving wheel assembly 121. A driving motor provides power for the driving wheel assembly 121 and / or the steering wheels 122.

[0092] In some embodiments, the perception module 13 includes a position determining device located above the device body 11, a bumper located at the front portion of the device body 11, a cliff sensor and an ultrasonic sensor located at the bottom of the device body 11, an infrared sensor, a magnetometer, an accelerometer, a gyroscope, an odometer, and the like, which provide various position information and motion state information of the device body 11 to the control module 14. For example, the front portion of the device body 11 is provided with a bumper, and when the driving wheel assembly propels the cleaning device 10 to walk on the ground during the cleaning process, the bumper detects one or more events (or objects) in the travel path of the cleaning device 10 via a sensor module, such as an infrared sensor, and the cleaning device 10 can control the driving structure to respond to the event (or object), such as climbing over a step, by the event (or object) detected by the bumper, such as a step, an obstacle, a wall.

[0093] In some embodiments, the control module 14 can comprehensively judge the current working state of the cleaning robot, such as climbing a step, passing a threshold, being on a carpet, being at a cliff, being stuck above or below, being full of a dust box, being picked up, and the like, in combination with the distance information, speed information, and the like, fed back by the bumper, the cliff sensor and the ultrasonic sensor, the infrared sensor, the magnetometer, the accelerometer, the gyroscope, the odometer, and the like, and can give specific next action strategies for different situations, so that the work of the cleaning device 10 is more in line with the requirements of the owner, and better user experience is achieved. Further, the control module 14 can plan the most efficient and reasonable cleaning path and cleaning mode based on the real-time map information drawn by SLAM (Simultaneous Localization and Mapping), so as to improve the cleaning efficiency of the cleaning device 10.

[0094] In some embodiments, the energy module 16 includes a rechargeable battery, such as a nickel-hydrogen battery and a lithium battery. The rechargeable battery can be connected with a charging control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit, and the charging control circuit, the battery pack charging temperature detection circuit, and the battery undervoltage monitoring circuit are connected with a single-chip microcomputer control circuit. The host is connected with a charging pile for charging through a charging electrode arranged at the side or the lower portion of the machine body.

[0095] In some embodiments, the human-machine interaction module 17 includes keys on the host panel for the user to select functions; it can also include a display screen and / or indicator lights and / or a loudspeaker to show the user the current state of the machine or the function selection items; it can also include a mobile phone client program. For path navigation type cleaning equipment, the mobile phone client can show the user a map of the environment in which the equipment is located, and the position of the machine, and can provide the user with more abundant and humanized function items.

[0096] In some embodiments, the cleaning module 15 can include a dry cleaning module, or a dry and wet cleaning module. As shown in FIG. 2, the dry cleaning module can include a roller brush assembly 151, an edge brush 152, etc.; the wet cleaning module includes a cleaning head 153, a water tank, etc.

[0097] In some embodiments, the roller brush assembly 151 includes a roller brush, a dust box, a fan, and an air outlet. The roller brush with a certain interference with the ground sweeps up the garbage on the ground and brings it to the front of the dust collection port between the roller brush and the dust box, and then the garbage is sucked into the dust box by the gas generated by the fan structure and passing through the dust box. The garbage is isolated inside the dust box near the dust collection port by the filter screen, the filter screen completely isolates the dust collection port from the air outlet, and the filtered air enters the fan through the air outlet.

[0098] In some embodiments, the dust collection port of the dust box is located in front of the machine, the air outlet is located on the side of the dust box, and the air inlet of the fan is opposite to the air outlet of the dust box. The front panel of the dust box can be opened for cleaning the garbage in the dust box. The filter screen and the box body of the dust box are detachably connected, facilitating the disassembly and cleaning of the filter screen.

[0099] In some embodiments, as shown in FIGS. 3-5, the roller brush assembly 151 includes at least two roller brushes 1511, each of which includes a connecting end and a free end. The at least two roller brushes 1511 include two oppositely arranged first and second roller brushes 15111 and 15112, the first roller brush 15111 includes a first connecting end and a first free end, and the second roller brush 15112 includes a second connecting end and a second free end. The first free end of the first roller brush 15111 and the second free end of the second roller brush 15112 are oppositely spaced, and the first roller brush 15111 and the second roller brush 15112 have a speed difference.

[0100] By arranging at least two roller brushes 1511 in the roller brush assembly 151, compared with arranging only one roller brush 1511, the stability during cleaning is effectively improved. By arranging a gap between the first free end of the first roller brush 15111 and the second free end of the second roller brush 15112, the interference or jamming of the oppositely arranged first and second roller brushes 15111 and 15112 is avoided.

[0101] In addition, since the hair on the ground is easy to entangle on the roller brush 1511 and cannot fall off by itself when the cleaning device 10 is performing the cleaning operation, the user needs to manually remove the hair entangled on the roller brush 1511, which greatly reduces the user experience. By having a speed difference between the first roller brush 15111 and the second roller brush 15112, when the hair is entangled on the first roller brush 15111 and the second roller brush 15112, the first roller brush 15111 can pull out the hair entangled on the second roller brush 15112, or the second roller brush 15112 can pull out the hair entangled on the first roller brush 15111, thereby realizing the hair being thrown out into the dust box and improving the user experience.

[0102] In some embodiments, as shown in FIGS. 3 and 4, the roller brush assembly 151 further includes a roller brush cover 1512, a roller brush cabin 15121 is formed through the roller brush cover 1512, and the at least two roller brushes 1511 are arranged in the roller brush cabin 15121. A dust collection port 15122 is arranged on the roller brush cabin 15121, and the dust collection port 15122 is used to communicate with the dust box. The position of the dust collection port 15122 can correspond to the gap between the first roller brush 15111 and the second roller brush 15112, and during the rotation of the first roller brush 15111 and the second roller brush 15112, the garbage, hair and the like are swept to the position corresponding to the gap, and then the garbage, hair and the like can be timely and effectively sucked into the dust box through the dust collection port 15122 located at the gap.

[0103] In some embodiments, the rotation directions of the two oppositely arranged roller brushes 1511 are the same. The rotation directions of the first roller brush 15111 and the second roller brush 15112 can be the same, so as to simultaneously sweep the garbage on the ground and roll it to the front of the dust collection port 15122 between the roller brush 1511 and the dust box, and then be sucked into the dust box.

[0104] In some embodiments, the rotation speed ratio of the two oppositely arranged roller brushes 1511 is 1:1.05-1:1.2, for example, 1:1.05, 1:1.1, 1:1.15 or 1:1.2. That is, the rotation speed ratio of the first roller brush 15111 and the second roller brush 15112 is 1:1.05-1:1.2, or the rotation speed ratio of the second roller brush 15112 and the first roller brush 15111 is 1:1.05-1:1.2. By having the rotation speed ratio of the two oppositely arranged roller brushes 1511 be 1:1.05-1:1.2, the rotation speeds of the two roller brushes 1511 are relatively close, so that both of the two roller brushes 1511 have good cleaning effect when cleaning the garbage, so as to avoid the cleaning effect being reduced when one of the rotation speeds is relatively slow, or the service life being reduced due to accelerated wear when one of the rotation speeds is relatively high.

[0105] In some embodiments, the two relatively arranged rolling brushes 1511 have relatively fast rotating speed, and the rotating speed of the rolling brush 1511 with relatively fast rotating speed can be 850 r / min-1600 r / min, for example, 850 r / min, 900 r / min, 950 r / min, 1000 r / min, 1100 r / min, 1200 r / min, 1300 r / min, 1400 r / min, 1500 r / min, etc.; the rotating speed of the rolling brush 1511 with relatively slow rotating speed can be 500 r / min-1250 r / min, for example, 500 r / min, 550 r / min, 600 r / min, 700 r / min, 800 r / min, 900 r / min, 1000 r / min, 1100 r / min, 1200 r / min, etc. The rotating speeds of the two rolling brushes 1511 are relatively close, and both of the two rolling brushes 1511 have good cleaning effect when cleaning garbage, so as to avoid that the cleaning effect is reduced when one of the rotating speeds is slow, or the service life is reduced due to accelerated wear when one of the rotating speeds is high.

[0106] In some embodiments, the rotating speed difference between the two relatively arranged rolling brushes 1511 can be 50 r / min-350 r / min, for example, 50 r / min, 100 r / min, 150 r / min, 200 r / min, 250 r / min, 300 r / min, 350 r / min, etc. The rotating speed difference between the two rolling brushes 1511 is relatively small, and both of the two rolling brushes 1511 have good cleaning effect when cleaning garbage, so as to avoid that the cleaning effect is reduced when one of the rotating speeds is slow, or the service life is reduced due to accelerated wear when one of the rotating speeds is high.

[0107] In some embodiments, as shown in FIG. 5, the first rolling brush 15111 and the second rolling brush 15112 each include a shaft and a cleaning element arranged on the shaft, the cleaning element includes a blade, or the cleaning element includes a bundle of hairs, or the cleaning element includes a blade and a bundle of hairs. When the cleaning element includes a blade and a bundle of hairs, the blade and the bundle of hairs can be respectively connected to the shaft, or the blade and the bundle of hairs are integrated. As shown in FIG. 6, the first rolling brush 15111 includes a first shaft 151111 and a first blade 151112 and a first bundle of hairs 151113 arranged on the first shaft 151111; as shown in FIG. 7, the second rolling brush 15112 includes a second shaft 151121 and a second blade 151122 and a second bundle of hairs 151123 arranged on the second shaft 151121; through the arranged blade, the blade is driven to rotate in the rotating process of the shaft, and the garbage is rolled to the front of the dust collecting port 15122 between the rolling brush 1511 and the dust box, and then is sucked into the dust box. Through the arranged bundle of hairs, the bundle of hairs can sweep the garbage such as dust and hair to the front of the dust collecting port 15122 between the rolling brush 1511 and the dust box, and then is sucked into the dust box. Through the cooperation of the bundle of hairs and the blade, the cleaning effect of the rolling brush 1511 can be improved.

[0108] In some embodiments, when the cleaning piece includes the blade, the shaft rod and the blade are integrally formed. In the case of preventing hair from winding around the roller brush 1511, if the shaft rod and the blade are assembled together as separate structures, there is usually a gap at the assembly position of the shaft rod and the blade during assembly, and if the hair enters the gap position, it cannot be detached from the roller brush 1511. By setting the shaft rod and the blade as an integrally formed structure, the gap between the shaft rod and the blade is avoided, and the situation that the hair cannot be detached from the roller brush 1511 after entering the gap is avoided, thereby enhancing the effect of preventing hair from winding around the first roller brush 15111 and the second roller brush 15112.

[0109] In some embodiments, the shaft rod and the blade can be combined to form an integrally formed structure through processes such as in-mold injection, liquid injection, and oil pressure forming, thereby avoiding the gap between the shaft rod and the blade, and avoiding the situation that the hair cannot be detached from the roller brush 1511 after entering the gap.

[0110] In some embodiments, the shaft rod can be made of PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), PC+ABS, PA (polyamide), PC+GF (glass fiber), ABS+GF, PC+ABS+GF, PA+GF, etc. The blade can be made of at least one of TPU (thermoplastic polyurethane rubber), TPE (thermoplastic elastomer), silicone, and rubber.

[0111] In some embodiments, when the cleaning piece includes the blade and the tuft, the blade is a plurality of blades, the plurality of blades are arranged along the circumference of the shaft rod, and the tuft is arranged between adjacent blades in the circumferential direction of the shaft rod. By arranging the tuft between adjacent blades, dust, hair, and other garbage can be swept to the front of the dust collection port 15122 between the dust boxes, and then sucked into the dust box. By the cooperation of the tuft and the blade, the cleaning effect of the roller brush 1511 can be improved.

[0112] In some embodiments, as shown in FIGS. 6 and 7, a plurality of tufts are arranged between adjacent blades, and the blades are arranged in a spiral shape in the axial direction of the shaft rod, and the plurality of tufts are arranged in a spiral shape along the axial direction of the shaft rod. By arranging the plurality of blades and the tufts in a spiral shape along the axial direction of the shaft rod, during the rotation of the roller brush 1511, garbage can be moved towards the movable end, thereby making it easier for the garbage to pass through.

[0113] In some embodiments, the hair bundle includes a fixed end and a movable end, the fixed end is connected with the shaft, and the hair bundle extends in a straight line without deformation under no external force. The movable end extends towards the free end of the roller brush 1511 and is inclined towards the free end of the roller brush 1511. When the dirt is moved, the movable end can guide the dirt to move along the extension direction of the hair bundle to the free end of the shaft, and then the dirt is sucked into the dust box, thereby improving the cleaning effect.

[0114] In some embodiments, the angle between the hair bundle and the outer wall of the shaft after the hair bundle is inclined towards the free end of the roller brush 1511 along the axial direction of the shaft can be 30°-60°, such as 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0115] In some embodiments, the outer wall of the shaft can be made of elastic material, so that the outer wall of the shaft can be elastically deformed. In other embodiments, the outer wall of the shaft can be rigid. It should be noted that rigid means that the outer wall of the shaft will not deform or will deform slightly under normal working conditions, but it does not mean that the outer wall of the shaft cannot deform at all. The rigid outer wall of the shaft will not deform under normal working conditions.

[0116] In some embodiments, the end of the shaft is made of soft rubber material, which has large surface friction and is beneficial to the hair being thrown out. It can be understood that the part of the shaft except the end can be made of hard rubber material.

[0117] In some embodiments, as shown in FIG. 8, the roller brush assembly 151 further includes a driving device 15131, a first transmission assembly 15132 and a second transmission assembly 15133. The first transmission assembly 15132 connects the driving device 15131 and the first roller brush 15111, and the second transmission assembly 15133 connects the driving device 15131 and the second roller brush 15112. The transmission ratios of the first transmission assembly 15132 and the second transmission assembly 15133 are different.

[0118] In some embodiments, the first transmission assembly 15132 is a gear transmission assembly. As shown in FIG. 9, the first transmission assembly 15132 can include a first drive gear 151321, a first connecting gear 151322, a second connecting gear 151323, and a first driven gear 151324 engaged together in sequence, the first drive gear 151321 is connected with the output shaft of the driving device 15131, and the first driven gear 151324 is fixedly connected with the first rolling brush 15111; the first drive gear 151321 is driven to rotate by the driving device 15131, thereby driving the first driven gear 151324 to rotate, and the purpose of driving the first rolling brush 15111 to rotate is achieved through the first driven gear 151324. In some embodiments, as shown in FIG. 9, the first connecting gear 151322 can be a double-layer gear, the lower layer gear ring with more teeth is engaged with the first drive gear 151321, and the upper layer gear ring with fewer teeth is engaged with the second connecting gear 151323; by setting the first connecting gear 151322 as a double-gear ring with different numbers of teeth, it is beneficial to adjust the transmission ratio of the first transmission assembly 15132.

[0119] In some embodiments, the second transmission assembly 15133 is a gear transmission assembly. As shown in FIGS. 9 and 10, the second transmission assembly 15133 can include a second driven gear 151331, a third connecting gear 151332, and a third driven gear 151333 engaged together in sequence, the third driven gear 151333 is fixedly connected with the second rolling brush 15112; the first transmission assembly 15132 further includes a fourth connecting gear 151325 and a fifth connecting gear 151326 engaged together, the fourth connecting gear 151325 is engaged with the first driven gear 151324, and the fifth connecting gear 151326 is connected with the second driven gear 151331 through a transmission rod 15134 to rotate synchronously; when the first driven gear 151324 rotates, the fourth connecting gear 151325 and the fifth connecting gear 151326 are driven to rotate, thereby driving the second driven gear 151331 to rotate through the transmission rod 15134, then driving the third driven gear 151333 to rotate through the second driven gear 151331, and the purpose of driving the second rolling brush 15112 to rotate is achieved.

[0120] By the arrangement of the second transmission assembly 15133, the synchronous rotation of the first roller brush 15111 and the second roller brush 15112 is realized; at the same time, by the second transmission assembly 15133, one driving device 15131 can be used to drive the first roller brush 15111 and the second roller brush 15112 simultaneously. In addition, by adjusting the transmission ratio of the gears in the first transmission assembly 15132 and the second transmission assembly 15133, the rotation speed of the first roller brush 15111 and the second roller brush 15112 can be adjusted; for example, the number of teeth of the fourth connecting gear 151325 can be the same as that of the third connecting gear 151332, the number of teeth of the fifth connecting gear 151326 and the second driven gear 151331 can be the same, the number of teeth of the first driven gear 151324 can be twenty, and the number of teeth of the third driven gear 151333 can be twenty-two; by adjusting the number of teeth of the first driven gear 151324 and the third driven gear 151333, the rotation speed of the first roller brush 15111 and the second roller brush 15112 can be adjusted.

[0121] In some embodiments, the driving device 15131 can be a motor, which is used as a driving source to provide power for the driving device 15131. The motor has high controllability and stability, and can improve the precise control of the rotation speed of the first roller brush 15111 and the second roller brush 15112.

[0122] In some embodiments, the driving device 15131 can be a motor, which is used as a driving source to provide power for the driving device 15131. The motor has high controllability and stability, and can improve the precise control of the rotation speed of the first roller brush 15111 and the second roller brush 15112.

[0123] In some embodiments, as shown in FIG. 11, the roller brush assembly 151 further includes a first driving device 15135, a first transmission assembly 15132, a second driving device 15136, and a second transmission assembly 15133. The first transmission assembly 15132 connects the first driving device 15135 and the first roller brush 15111 of the two oppositely arranged roller brushes 1511, and the second transmission assembly 15133 connects the second driving device 15136 and the second roller brush 15112. By arranging two first driving devices 15135 and second driving devices 15136, the first roller brush 15111 and the second roller brush 15112 are driven respectively.

[0124] In some embodiments, the transmission ratios of the first transmission assembly 15132 and the second transmission assembly 15133 are different to achieve the adjustment of the rotation speeds of the first and second rolling brushes 15111 and 15112. The specific structure of the first driving device 15135 driving the first transmission assembly 15132 to rotate the first rolling brush 15111 and the specific structure of the second driving device 15136 driving the second transmission assembly 15133 to rotate the second rolling brush 15112 can be the same as the specific structure of the driving device 15131 driving the first transmission assembly 15132 to rotate the first rolling brush 15111 in the above-mentioned embodiments, which will not be described here again.

[0125] In some embodiments, the rotation speeds of the first driving device 15135 and the second driving device 15136 can be the same, and the adjustment of the rotation speeds of the first and second rolling brushes 15111 and 15112 can be achieved by adjusting the number of teeth of the driven gear connected with the first rolling brush 15111 in the first transmission assembly 15132 and the number of teeth of the driven gear connected with the second rolling brush 15112 in the second transmission assembly 15133. In other embodiments, the first transmission assembly 15132 and the second transmission assembly 15133 using gears as transmission assemblies can adjust the transmission ratio by adjusting the number of teeth of any gear in the gear transmission assembly, which is not limited in the present disclosure.

[0126] In some embodiments, the rotation speeds of the output shafts of the first driving device 15135 and the second driving device 15136 are different, and the transmission ratios of the first transmission assembly 15132 and the second transmission assembly 15133 are the same, that is, the adjustment of the rotation speeds of the first and second rolling brushes 15111 and 15112 can be achieved by adjusting the rotation speeds of the output shafts of the first driving device 15135 and the second driving device 15136. In other embodiments, the adjustment of the rotation speeds of the first and second rolling brushes 15111 and 15112 can be achieved by simultaneously adjusting the rotation speeds of the output shafts of the first driving device 15135 and the second driving device 15136 and the transmission ratios of the first transmission assembly 15132 and the second transmission assembly 15133, which is not limited in the present disclosure.

[0127] In some embodiments, the first driving device 15135 and the second driving device 15136 can directly drive the first rolling brush 15111 and the second rolling brush 15112, i.e., without the transmission assembly. By adjusting the rotation speed of the output shaft of the first driving device 15135 and the second driving device 15136, the rotation speed of the first rolling brush 15111 and the second rolling brush 15112 can be adjusted. By adjusting the rotation speed of the output shaft of the first driving device 15135 and the second driving device 15136 through the controller, the rotation speed of the first rolling brush 15111 and the second rolling brush 15112 can be adjusted, so that the rotation speed of the first rolling brush 15111 and the second rolling brush 15112 can be adjusted when facing different surfaces to be cleaned.

[0128] In some embodiments, the end surface of the free end of at least one of the two rolling brushes 1511 arranged oppositely is arranged to be inclined relative to the rotation axis of the rolling brush 1511, the end surface of the free end of the first rolling brush 15111 is arranged to be inclined relative to the rotation axis of the rolling brush 1511, or the end surface of the free end of the second rolling brush 15112 is arranged to be inclined relative to the rotation axis of the rolling brush 1511, or the end surface of the free end of the first rolling brush 15111 and the second rolling brush 15112 is arranged to be inclined relative to the rotation axis of the rolling brush 1511.

[0129] By arranging the end surface of the free end of the rolling brush 1511 to be inclined, the end surface is formed as an inclined surface. When the hair is entangled at the end of the shaft, the hair will slide along the inclined end surface as it gradually tightens, and eventually come off the shaft. This solves the problem of the end of the shaft being easily entangled with hair. Moreover, after the hair comes off the shaft, it will be thrown out by the rotation of the rolling brush 1511. By arranging at least one end surface of the shaft to be inclined relative to the central axis of the shaft, the hair is easily thrown out, which facilitates the hair entering the dust box from the main brush chamber and improves the user experience.

[0130] In some embodiments, the end surfaces of the free ends of the first rolling brush 15111 and the second rolling brush 15112 are arranged to be inclined, and there is a state in which the inclined directions are the same when the first rolling brush 15111 and the second rolling brush 15112 are rotating or not rotating.

[0131] In some embodiments, the end surfaces of the free ends of the first rolling brush 15111 and the second rolling brush 15112 are arranged to be inclined, and there is a state in which the end surfaces are arranged to be parallel when the first rolling brush 15111 and the second rolling brush 15112 are rotating or not rotating.

[0132] In some embodiments, as shown in FIG. 12, the end surface of the free end of the rolling brush 1511 is a plane. By arranging the end surface of the free end of the rolling brush 1511 to be an inclined plane, when the hair is entangled at the end of the shaft, the hair will slide along the inclined plane as it gradually tightens, and eventually come off the shaft. This improves the problem of the end of the shaft being easily entangled with hair.

[0133] In some embodiments, as shown in FIG. 13, the end face of the free end of the rolling brush 1511 is an arc face. By setting the end face of the free end of the rolling brush 1511 as an inclined arc face, the end face is smooth; when the hair is entangled at the end of the shaft, as the hair gradually tightens, the hair will slide along the inclined arc face, so that the hair can smoothly slide on the end face and finally come out of the shaft, thereby improving the problem of easy entanglement of hair at the end of the shaft. The end faces of the first rolling brush 15111 and the second rolling brush 15112 are arc faces facing each other.

[0134] In some embodiments, as shown in FIG. 14, the end face of the free end of the rolling brush 1511 is a wavy face. By setting the end face of the free end of the rolling brush 1511 as an inclined wavy face, the end face is smooth; when the hair is entangled at the end of the shaft, as the hair gradually tightens, the hair will slide along the inclined wavy face, so that the hair can smoothly slide on the end face and finally come out of the shaft, thereby improving the problem of easy entanglement of hair at the end of the shaft.

[0135] In some embodiments, the end faces of the free ends of the two rolling brushes 1511 arranged oppositely are of the same face type. By making the end faces of the free ends of the first rolling brush 15111 and the second rolling brush 15112 of the same face type, it is convenient to set the size of the gap between the first rolling brush 15111 and the second rolling brush 15112, and at the same time, the hair on the first rolling brush 15111 and the second rolling brush 15112 can be synchronized to come out of the shaft as much as possible on the end face.

[0136] In some embodiments, as shown in FIGS. 15 and 16, the first rolling brush 15111 includes a first shaft 151111 and a first end cover 151114 arranged on the first shaft 151111 to form a first free end of the first rolling brush 15111, and an outer surface of the first end cover 151114 forms an end face of the first free end; the second rolling brush 15112 includes a second shaft 151121 and a second end cover 151124 arranged on the second shaft 151121 to form a second free end of the second rolling brush 15112, and an outer surface of the second end cover 151124 forms an end face of the second free end. By setting the end cover and setting the end face of the end cover as inclined, the end face is formed as an inclined face; when the hair is entangled at the end of the shaft, as the hair gradually tightens, the hair will slide along the inclined end face, and finally come out of the shaft, thereby solving the problem of easy entanglement of hair at the end of the shaft; at the same time, after the hair comes out of the shaft, the hair is rotated with the rolling brush 1511, by setting at least one end face of the shaft to be inclined compared to the central axis of the shaft, the hair is easily thrown out, which is beneficial to the hair entering the dust box from the main brush bin, and improves the use experience.

[0137] In some embodiments, the shaft rod can be a cylindrical structure, and the shaft rod extends in a straight line. The end cover can be provided on the free end of the shaft rod by clamping, bonding, threaded connection or the like. The end face of the end cover is arranged obliquely relative to the central axis of the shaft rod, that is, the end face of the end cover is neither parallel to the central axis of the shaft rod nor perpendicular to the central axis of the shaft rod, that is, the central axis of the shaft rod forms an angle with the end face which is not 90 degrees.

[0138] In some embodiments, as shown in FIG. 17, the rolling brush assembly 151 further comprises a blocking piece 1514, at least part of the blocking piece 1514 is located between the oppositely arranged first rolling brush 15111 and the second rolling brush 15112. By arranging the blocking piece 1514 and making at least part of the blocking piece 1514 located between the oppositely arranged first rolling brush 15111 and the second rolling brush 15112, when the hair wound on the rolling brush 1511 follows the rotation of the rolling brush 1511, the hair will be hooked and the moving direction will be changed, the hair is diverted to move towards the dust collecting port 15122 side, and then is sucked into the dust box by the fan, thereby achieving the effect of removing the hair wound on the rolling brush 1511.

[0139] In some embodiments, the blocking piece 1514 is arranged on the inner wall of the rolling brush cabin 15121 away from the dust collecting port 15122 along the front-rear axis X and is arranged opposite to the dust collecting port 15122, which is conducive to the movement of the hair towards the dust collecting port 15122 side and then being sucked into the dust box by the fan.

[0140] In some embodiments, as shown in FIG. 18, the blocking piece 1514 is arranged on the inner wall of the rolling brush cabin 15121. By arranging the blocking piece 1514 on the inner wall of the rolling brush cabin 15121, the blocking piece 1514 can be stably connected, and part of the blocking piece 1514 can extend to the end face between the first rolling brush 15111 and the second rolling brush 15112 opposite to each other.

[0141] In some embodiments, at the bottom of the rolling brush assembly 151, the rolling brush 1511 rotates from the first side to the second side of the rolling brush cabin 15121, and the blocking piece 1514 is arranged on the first side, that is, the blocking piece 1514 is arranged on the side close to the front along the front-rear axis X and is arranged opposite to the dust collecting port 15122, which is conducive to the movement of the hair towards the dust collecting port 15122 side and then being sucked into the dust box by the fan.

[0142] In some embodiments, as shown in FIG. 19, the blocking piece 1514 includes a connecting segment 15141 and a blocking segment 15142, the connecting segment 15141 is connected to the inner wall of the rolling brush cabin 15121, and the blocking segment 15142 is connected to the connecting segment 15141, and the extension direction of the blocking segment 15142 is different from the extension direction of the connecting segment 15141. By arranging the connecting segment 15141, the blocking piece 1514 can be stably fixed in the rolling brush cabin 15121. By arranging the extension direction of the blocking segment 15142 to be different from the extension direction of the connecting segment 15141, the connecting segment 15141 can extend between the oppositely arranged rolling brushes 1511, thereby playing a role in blocking hair.

[0143] In some embodiments, the blocking segment 15142 extends perpendicularly to the axial direction of the rolling brush 1511 between the opposite rolling brushes 1511, and the gap between the first rolling brush 15111 and the second rolling brush 15112 can be relatively small, so that the first rolling brush 15111 and the second rolling brush 15112 do not interfere with the blocking segment 15142 when rotating.

[0144] In some embodiments, as shown in FIG. 19, the connecting segment 15141 is provided with an arc surface for connecting with the inner wall of the rolling brush cabin 15121, the arc surface is attached to the arc-shaped inner wall of the main brush cover along the circumferential direction of the rolling brush 1511, the curvature of the arc surface of the connecting segment 15141 is matched with the curvature of the arc-shaped inner wall of the rolling brush cabin 15121, thereby achieving close attachment and connection, which can be connected by means of gluing.

[0145] In some embodiments, as shown in FIG. 19, the blocking segment 15142 is connected to the connecting segment 15141, and the blocking segment 15142 and the connecting segment 15141 form a hook-shaped structure, which can also be referred to as an L-shaped structure, after being connected, the extension direction of the blocking segment 15142 is perpendicular to the axial direction of the rolling brush 1511, and extends between the opposite rolling brushes 1511. The end of the blocking segment 15142 away from the connecting segment 15141 extends to the central axis of the rolling brush 1511.

[0146] In some embodiments, the rolling brush assembly 151 further includes a support, the support includes a sleeving rod, and the rolling brush 1511 is sleeved on the sleeving rod, so that the rolling brush 1511 can stably rotate on the sleeving rod.

[0147] In some embodiments, as shown in FIGS. 20 and 21, the first support 1515 corresponding to the first roller brush 15111 is provided with a first sleeve rod, which includes a first inner rod 15152 and a first outer rod 15151. The first outer rod 15151 is sleeved on the first inner rod 15152 and rotationally connected with the first inner rod 15152. The first outer rod 15151 is fixedly arranged to provide support, and the first inner rod 15152 drives the first roller brush 15111 to rotate. The cooperation between the first inner rod 15152 and the first outer rod 15151 realizes the driving of the assembly of the first roller brush 15111.

[0148] In some embodiments, as shown in FIG. 22, the first inner rod 15152 is limitedly installed in the axial direction by the first fastener 15155. The driving device drives the first inner rod 15152 to rotate by driving the first fastener 15155 to rotate. The first inner rod 15152 is sleeved with the first bearing 15154. The inner ring of the first bearing 15154 is sleeved on the outer peripheral wall of the first inner rod 15152, and the outer ring of the first bearing 15154 is connected to the inner peripheral wall of the first outer rod 15151. The first outer rod 15151 is rotationally connected with the first inner rod 15152 through the first bearing 15154. The first bearing 15154 arranged between the first outer rod 15151 and the first inner rod 15152 can ensure the relative rotation between the first outer rod 15151 and the first inner rod 15152 to be more stable, and reduce the wear between the first outer rod 15151 and the first inner rod 15152. In some embodiments, the first bearing 15154 is at least two, and the at least two first bearings 15154 are arranged along the axial direction of the first inner rod 15152, which can further ensure the stable rotation of the first inner rod 15152 in the first outer rod 15151. When the number of the first bearing 15154 is two, one first bearing 15154 is arranged on the inner wall of one end of the first outer rod 15151, and the other first bearing 15154 is arranged on the inner wall of the other end of the first outer rod 15151.

[0149] In some embodiments, the first outer rod 15151 is in one-piece structure with the body of the first support 1515, and a section of the first inner rod 15152 is rotatably arranged in the first outer rod 15151. One end of the first inner rod 15152 is connected with the driving device 15131, so that the driving device 15131 can drive the first inner rod 15152 to rotate. The section of the first inner rod 15152 away from the driving device penetrates out of the first outer rod 15151, and a first rubber core 15153 is fixedly sleeved on the section of the first inner rod 15152 penetrating out of the first outer rod 15151. The first shaft rod 151111 of the first rolling brush 15111 is provided with a first sleeve hole 151115, and the first rolling brush 15111 is sleeved on the first rubber core 15153 and the first outer rod 15151 through the first sleeve hole 151115. The first rubber core 15153 is fixedly connected with the first shaft rod 151111 in the circumferential direction, so that the first rubber core 15153 can drive the first shaft rod 151111 to rotate. That is, the driving device 15131 drives the first inner rod 15152 to rotate, the first inner rod 15152 drives the first rubber core 15153 to rotate, and the first rubber core 15153 drives the first shaft rod 151111 to rotate.

[0150] In some embodiments, as shown in FIGS. 23 and 24, the second rolling brush 15112 is provided with a second sleeve rod on the corresponding second support 1516. The second sleeve rod includes a second inner rod 15162 and a second outer rod 15161, and the second outer rod 15161 is sleeved on the second inner rod 15162 and is rotatably connected with the second inner rod 15162. The second outer rod 15161 is fixedly arranged to form a supporting effect, and the second inner rod 15162 drives the second rolling brush 15112 to rotate. The cooperation of the second inner rod 15162 and the second outer rod 15161 realizes the driving of the assembly of the second rolling brush 15112.

[0151] In some embodiments, as shown in FIG. 25, the second inner rod 15162 is formed in axial limiting installation through the second fastener 15165, and the driving device can drive the second fastener 15165 to rotate so as to achieve the purpose of driving the second inner rod 15162 to rotate; the second inner rod 15162 is sleeved with the second bearing 15164, the inner ring of the second bearing 15164 is sleeved on the outer circumferential wall of the second inner rod 15162, the outer ring of the second bearing 15164 is connected to the inner circumferential wall of the second outer rod 15161, and the second outer rod 15161 is rotationally connected with the second inner rod 15162 through the second bearing 15164. By arranging the second bearing 15164 between the second outer rod 15161 and the second inner rod 15162, the relative rotation between the second inner rod 15162 and the second outer rod 15161 can be more stable, and the wear between the second outer rod 15161 and the second inner rod 15162 is also reduced. In some embodiments, the second bearing 15164 is at least two, and the at least two second bearings 15164 are arranged along the axial direction of the second inner rod 15162, so as to further ensure that the second inner rod 15162 stably rotates in the second outer rod 15161. When the number of the second bearing 15164 is two, one second bearing 15164 is arranged on the inner wall of one end of the second outer rod 15161, and the other second bearing 15164 is arranged on the inner wall of the other end of the second outer rod 15161.

[0152] In some embodiments, the second outer rod 15161 and the body of the second support 1516 are in an integral structure, and a section of the second inner rod 15162 can be rotatably arranged in the second outer rod 15161. One end of the second inner rod 15162 is connected with the driving device 15131, so that the driving device 15131 can drive the second inner rod 15162 to rotate, and a section of the second inner rod 15162 away from the driver penetrates out of the second outer rod 15161, and a second rubber core 15163 is fixedly sleeved on the section of the second inner rod 15162 penetrating out of the second outer rod 15161; the second shaft rod 151121 of the second rolling brush 15112 is provided with a second sleeve hole 151125, and the second rolling brush 15112 is sleeved on the second rubber core 15163 and the second outer rod 15161 through the second sleeve hole 151125, and the second rubber core 15163 and the second shaft rod 151121 are fixedly connected in the circumferential direction, so that the second rubber core 15163 can drive the second shaft rod 151121 to rotate, that is, the driving device 15131 drives the second inner rod 15162 to rotate, the second inner rod 15162 drives the second rubber core 15163 to rotate, and the second rubber core 15163 drives the second shaft rod 151121 to rotate.

[0153] In some embodiments, the first bearings 15154 and the second bearings 15164 can be oil-impregnated bearings or ball bearings, or both, to ensure good rotational stability. For example, the two first bearings 15154 and the two second bearings 15164 can all be oil-impregnated bearings. The oil-impregnated bearings have good wear resistance, are made of powder metallurgy materials, and can be customized to various shapes to meet different design spaces. The two first bearings 15154 can have the same size, and the two second bearings 15164 can have the same size to reduce costs and facilitate assembly.

[0154] In some embodiments, the two oppositely arranged rolling brushes 1511 have different shapes of the sleeve holes, and the shapes of the sleeve holes on the rolling brushes 1511 match those of the corresponding sleeve rods. The first rolling brush 15111 is assembled on the first support 1515, and the second rolling brush 15112 is assembled on the second support 1516. The first sleeve rod on the first support 1515 and the second sleeve rod on the second support 1516 can be the same or different. When the first sleeve rod on the first support 1515 and the second sleeve rod on the second support 1516 are the same, the installation positions of the first rolling brush 15111 and the second rolling brush 15112 can be interchangeable. When the first sleeve rod on the first support 1515 and the second sleeve rod on the second support 1516 are different, i.e., the first sleeve hole 151115 on the first rolling brush 15111 and the second sleeve hole 151125 on the second rolling brush 15112 are different, the first rolling brush 15111 and the second rolling brush 15112 can be prevented from being installed in the wrong positions on the first support 1515 and the second support 1516, thereby ensuring product yield.

[0155] In some embodiments, the first rolling brush 15111 is provided with a first sleeve hole 151115 and is sleeved on the sleeve rod of the first support 1515 through the first sleeve hole 151115. The cross section of the first sleeve hole 151115 is adapted to the cross section of the sleeve rod of the first support 1515. The second rolling brush 15112 is provided with a second sleeve hole 151125 and is sleeved on the sleeve rod of the second support 1516 through the second sleeve hole 151125. The cross section of the second sleeve hole 151125 is adapted to the cross section of the sleeve rod of the second support 1516. The cross sections of the first sleeve hole 151115 and the second sleeve hole 151125 are different, and the cross sections of the sleeve rods of the first support 1515 and the second support 1516 are different, so as to prevent the first rolling brush 15111 and the second rolling brush 15112 from being installed in the wrong positions on the first support 1515 and the second support 1516.

[0156] In some embodiments, as shown in FIG. 26, the first sleeve hole 151115 on the first roller brush 15111 is rectangular in cross section, i.e., the first sleeve hole 151115 is a rectangular hole. The first glue core 15153 on the first support 1515 is also rectangular in cross section and has a size and shape that are adapted to the first sleeve hole 151115. After the first glue core 15153 on the first support 1515 is inserted into the first sleeve hole 151115, the first glue core 15153 abuts the rectangular structure of the first sleeve hole 151115 in the circumferential direction through the rectangular structure, thereby driving the first roller brush 15111 to rotate.

[0157] In some embodiments, as shown in FIG. 27, the second sleeve hole 151125 on the second roller brush 15112 is plum blossom-shaped in cross section, i.e., the second sleeve hole 151125 is a plum blossom-shaped hole. The second glue core 15163 on the second support 1516 is also plum blossom-shaped in cross section and has a size and shape that are adapted to the second sleeve hole 151125. After the second glue core 15163 on the second support 1516 is inserted into the second sleeve hole 151125, the second glue core 15163 on the second support 1516 abuts the plum blossom-shaped structure of the second sleeve hole 151125 in the circumferential direction through the plum blossom-shaped structure, thereby driving the second roller brush 15112 to rotate.

[0158] By making the cross section of the first sleeve hole 151115 and the cross section of the first glue core 15153 on the first support 1515 rectangular, and making the cross section of the second sleeve hole 151125 and the cross section of the second glue core 15163 on the second support 1516 plum blossom-shaped, the cross section shapes are different and the sizes are different, so that the first glue core 15153 on the first support 1515 cannot be inserted into the second sleeve hole 151125, and the second glue core 15163 on the second support 1516 cannot be inserted into the first sleeve hole 151115, thereby forming a foolproof effect.

[0159] Embodiments of the present disclosure also provide a cleaning system, as shown in FIG. 28, which includes a base station 20 and a cleaning device 10 provided by the above-mentioned embodiments, and the base station 20 is used to dock the cleaning device 10. The cleaning device 10 can perform functions such as charging, self-cleaning, parking, sewage discharge, and water replenishment on the base station 20. The beneficial effects of the cleaning system provided by the present disclosure are described in detail in the above-mentioned cleaning device embodiments, which will not be repeated here.

[0160] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

[0161] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A roller brush assembly, comprising: At least two roller brushes, each roller brush including a connecting end and a free end, the free ends of the at least two roller brushes being arranged at a relative interval, and the two roller brushes arranged at a relative interval having a rotational speed difference.

2. The roller brush assembly according to claim 1, wherein, The rotational speed ratio of the two rollers set relative to each other is 1:1.05 to 1:1.

2.

3. The roller brush assembly according to claim 1, wherein, The rotational speed difference between the two rollers set relative to each other is 50 r / min to 350 r / min.

4. The roller brush assembly according to claim 1, wherein, The two rollers positioned opposite each other rotate in the same direction.

5. The roller brush assembly according to claim 1, wherein, The roller brush assembly also includes: Drive unit; A first transmission assembly connects the drive device to one of two oppositely arranged roller brushes; A second transmission assembly connects the drive device to the other of the two opposing roller brushes. The transmission ratios of the first transmission component and the second transmission component are different.

6. The roller brush assembly according to claim 1, wherein, The roller brush assembly also includes: A first drive device and a first transmission assembly, wherein the first transmission assembly connects the first drive device to one of two oppositely disposed roller brushes; A second drive unit and a second transmission assembly, the second transmission assembly connecting the second drive unit to the other of the two oppositely arranged roller brushes; Wherein, the transmission ratios of the first transmission component and the second transmission component are different, and / or, the rotational speeds of the output shafts of the first drive device and the second drive device are different.

7. The roller brush assembly according to claim 5 or 6, wherein, The first transmission component and / or the second transmission component are gear transmission components.

8. The roller brush assembly according to any one of claims 1 to 7, wherein, At least one of the two opposing roller brushes has its free end face tilted relative to the roller brush's axis of rotation.

9. The roller brush assembly according to claim 8, wherein, The free end face of the roller brush is a flat surface, an arc surface, or a wavy surface.

10. The roller brush assembly according to claim 9, wherein, The free ends of the two rollers that are positioned opposite each other have the same surface shape.

11. The roller brush assembly according to any one of claims 8 to 10, wherein, The roller brush includes a shaft and an end cap, the end cap being disposed on the shaft to form the free end of the roller brush, and the outer surface of the end cap forming the end face of the free end.

12. The roller brush assembly according to any one of claims 1 to 11, wherein, The roller brush assembly also includes: A blocking element, at least a portion of which is located between two opposing rollers.

13. The roller brush assembly according to claim 12, wherein, The roller brush assembly also includes: The roller brush chamber is disposed corresponding to the at least two roller brushes, and the blocking member is disposed on the roller brush. On the inner wall of the cabin.

14. The roller brush assembly according to claim 13, wherein, The roller brush chamber is provided with a dust collection port, which is used to communicate with the dust box. The blocking member is provided on the inner wall of the roller brush chamber on the side away from the dust collection port and is arranged opposite to the dust collection port.

15. The roller brush assembly according to claim 13, wherein, At the bottom of the roller brush assembly, the roller brush rotates from a first side of the roller brush chamber toward a second side, and the blocking member is disposed on the first side.

16. The roller brush assembly according to claim 13, wherein, The blocking component includes a connecting section and a blocking section. The connecting section is connected to the inner wall of the roller brush chamber, and the blocking section is connected to the connecting section. The extending direction of the blocking section is different from the extending direction of the connecting section.

17. The roller brush assembly according to any one of claims 1 to 16, wherein, The roller brush assembly also includes: A support frame, the support frame including a connecting rod, and the roller brush sleeved on the connecting rod.

18. The roller brush assembly according to claim 17, wherein, The connecting rod includes an inner rod and an outer rod, with the outer rod sleeved on the inner rod and rotatably connected to the inner rod.

19. The roller brush assembly according to claim 18, wherein, The inner rod is fitted with a bearing, and the outer rod and the inner rod are rotatably connected through the bearing.

20. The roller brush assembly of claim 17, wherein, The roller brush is provided with a socket hole, and is sleeved on the socket rod through the socket hole.

21. The roller brush assembly according to claim 20, wherein, The shapes of the socket holes on the two roller brushes that are set opposite to each other are different, and the shapes of the socket holes on the roller brushes match the shapes of the corresponding socket rods.

22. The roller brush assembly according to any one of claims 1 to 21, wherein, The roller brush includes a shaft and a cleaning element disposed on the shaft, the cleaning element including blades and / or bristles.

23. The roller brush assembly according to claim 22, wherein, When the cleaning component includes blades, the shaft and the blades are integrally formed.

24. The roller brush assembly according to claim 23, wherein, The shaft and the blade are manufactured by two-material injection molding, in-mold injection molding, liquid injection molding or hydraulic molding.

25. The roller brush assembly according to claim 22, wherein, When the cleaning component includes blades and bristle bundles, there are multiple blades arranged circumferentially along the shaft, and the bristle bundles are disposed between adjacent blades in the circumferential direction of the shaft.

26. The roller brush assembly according to claim 22, wherein, When the cleaning component includes bristles, the bristles include a fixed end and a movable end, the fixed end being connected to the shaft, and the movable end extending away from the shaft and inclined toward the free end of the roller brush.

27. A cleaning device comprising a roller brush assembly as claimed in any one of claims 1 to 26.

28. A cleaning system comprising: The cleaning equipment as described in claim 27; A base station, which is used to park the cleaning equipment.

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