Rolling brush assembly and cleaning robot

Abstract

The utility model relates to the field of robots, in particular to a rolling brush assembly and a cleaning robot. The rolling brush assembly comprises a roller structure and brushes, the roller structure comprises a brush mounting part and a rotary connecting part which are coaxially arranged, the brush mounting part and the rotary connecting part extend in the axial direction of the roller structure, and the brushes are arranged on the outer circumferential face of the brush mounting part at intervals in the circumferential direction of the brush mounting part. The brush mounting part is located on the peripheral side of the rotary connecting part, a first inner cavity is formed between the brush mounting part and the rotary connecting part, a first opening is formed in at least one end of the brush mounting part, and the first opening is used for allowing water to flow into the first inner cavity or allowing water in the first inner cavity to flow out; the water drainage speed is increased, so that a user does not need to spend large effort when lifting the cleaning robot out of the water surface, the water inlet speed is increased, when the user throws the cleaning robot into water to work, the sinking speed of the cleaning robot into the water bottom is increased, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of robot technology, and in particular to a roller brush assembly and a cleaning robot. Background Art

[0002] After long-term use, various dirt and garbage will float on the surface of the pool and the bottom of the pool will also accumulate, which will seriously pollute the water quality of the pool or affect the appearance. Therefore, a cleaning robot is needed to clean the underwater. The existing drum cannot drain or take in water quickly. Draining water is when the robot is lifted out of the water. If the drainage is not timely, the user needs to spend a lot of effort. Taking in water is when the robot is thrown into the water to work. If the water intake is slow, the robot will sink to the bottom of the water very slowly, reducing work efficiency. Utility Model Content

[0003] The main purpose of the present application is to propose a roller brush assembly, aiming to solve the technical problems of water ingress and slow drainage of the roller brush assembly of the existing cleaning robot.

[0004] To achieve the above-mentioned objectives, in a first aspect, the present application provides a roller brush assembly, including a roller structure and a brush, the roller structure including a coaxially arranged brush mounting portion and a rotating connection portion, the brush mounting portion and the rotating connection portion both extending along the axial direction of the roller structure, the brushes being arranged on the outer peripheral surface of the brush mounting portion at intervals along the circumference of the brush mounting portion, the brush mounting portion being located on the outer peripheral side of the rotating connection portion and a first inner cavity being formed therebetween, at least one end of the brush mounting portion being configured with a first opening, the first opening being used to supply water to flow into the first inner cavity or to supply water in the first inner cavity to flow out.

[0005] A roller brush assembly provided in an embodiment of the present application includes a roller structure and a brush, wherein the roller structure includes a coaxially arranged brush mounting portion and a rotating connection portion, wherein the brush mounting portion and the rotating connection portion both extend along the axial direction of the roller structure, wherein the brushes are arranged on the outer peripheral surface of the brush mounting portion at intervals along the circumference of the brush mounting portion, wherein the brush mounting portion is located on the outer peripheral side of the rotating connection portion and a first inner cavity is formed between the two, wherein at least one end of the brush mounting portion is configured with a first opening, wherein the first opening is used to supply water to flow into the first inner cavity or to supply water in the first inner cavity to flow out, and the provision of the first opening can speed up the drainage or water intake inside the roller structure. The faster drainage speed allows the user to lift the robot out of the water without spending much effort, and the faster water intake speed allows the robot to sink to the bottom of the water faster when the user throws the robot into the water for work, thereby improving work efficiency.

[0006] In an optional embodiment, the rotating connection part is configured with a second inner cavity, the end of the rotating connection part close to the first opening is a closed end, and the end of the rotating connection part away from the first opening has a second opening, the second opening is connected to the second inner cavity, and the second opening is used to supply water to flow into the second inner cavity or to allow water in the second inner cavity to flow out.

[0007] In an optional embodiment, the rotating connection part is provided with a plurality of conducting holes penetrating the first inner cavity and the second inner cavity, and the plurality of conducting holes are arranged on the outer peripheral surface of the rotating connection part at intervals along the circumference of the rotating connection part, and each of the conducting holes extends along the axial direction of the rotating connection part.

[0008] In an optional embodiment, the roller brush assembly includes at least two roller structures, at least two of the roller structures are spaced apart along their axial direction, and at least two of the roller structures can rotate relative to each other, the second inner cavity, the conducting hole, the first inner cavity and the first opening form a first water path, the second inner cavity, the second opening and the gap between two adjacent roller structures form a second water path, and the water flux on the first water path is greater than the water flux on the second water path.

[0009] In an optional embodiment, each of the two adjacent roller structures is connected to an end cover, and the two end covers are respectively fixed at the second openings of the two adjacent roller structures. The two end covers are both hollow and have a fixed shaft passing therein, and the two end covers are respectively rotatably connected to the fixed shaft.

[0010] In an optional embodiment, the roller brush assembly also includes a gear transmission component, which includes a connecting shaft and a transmission gear, one end of the connecting shaft is connected to the rotating connection part, and the other end of the connecting shaft is connected to the transmission gear, and the transmission gear is used to engage with the driving gear of the cleaning robot.

[0011] In an optional embodiment, the roller brush assembly also includes a sleeve, which is sleeved on the periphery of the connecting shaft, and the outer surface of the sleeve is provided with a plurality of engaging protrusions, which are used to engage with the engaging positions of the main body of the cleaning robot when the roller brush assembly is configured to the cleaning robot.

[0012] In an optional embodiment, a stop groove is constructed at one end of the rotating connection portion close to the first opening, and a stop portion adapted to the stop groove is provided at one end of the connecting shaft, and the stop portion is inserted into the stop groove.

[0013] In an optional embodiment, a plurality of baffles are provided between the brush mounting portion and the rotating connection portion, the plurality of baffles are distributed at intervals along the circumference of the brush mounting portion, and each of the baffles extends axially along the brush mounting portion, a chamber is formed between two adjacent baffles, and at least one conducting hole is provided in each of the chambers.

[0014] In a second aspect, an embodiment of the present application provides a cleaning robot, which includes a body and the roller brush assembly, wherein the roller brush assembly is disposed on the body and is rotatably connected to two opposite side walls of the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0016] Figure 1 It is a structural schematic diagram of a cleaning robot provided in an embodiment of the present application;

[0017] Figure 2 is a schematic diagram of the exploded structure of a cleaning robot provided in an embodiment of the present application;

[0018] Figure 3 It is a structural schematic diagram of a roller brush assembly provided in an embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the exploded structure of a roller brush assembly provided in an embodiment of the present application;

[0020] Figure 5 This is a three-dimensional structure diagram of a drum structure provided in an embodiment of the present application. Figure 1 ;

[0021] Figure 6 It is a structural schematic diagram of an open end of a brush mounting portion in a roller structure provided in an embodiment of the present application;

[0022] Figure 7 This is a three-dimensional structure diagram of a drum structure provided in an embodiment of the present application. Figure 2 ;

[0023] Figure 8 It is a structural schematic diagram of an open end of a rotating connection part in a drum structure provided in an embodiment of the present application;

[0024] Fig. 9 This is a schematic diagram of a cross-section of a roller structure along the axial direction provided in an embodiment of the present application. Figure 1 ;

[0025] Fig.10 This is a schematic diagram of a cross-section of a roller structure along the axial direction provided in an embodiment of the present application. Figure 2 ;

[0026] Fig.11 This is a schematic diagram of a cross-section of a roller structure along the axial direction provided in an embodiment of the present application. Figure 3 ;

[0027] Fig.12 It is a schematic cross-sectional view of a roller brush assembly along the axial direction provided in an embodiment of the present application.

[0028] Description of Figure Numbers:

[0029] Cleaning robot 100; body 10; roller brush assembly 20; cavity 10a; roller structure 21; brush 22; rotating connection part 211; brush mounting part 212; first inner cavity 213; first opening 214; second inner cavity 215; conducting hole 216; first end 212a; third end 211a; second end 212b; fourth end 211b; first ridge 217; baffle 218; chamber 219; second ridge 220; first roller structure 222; second roller structure 223; gear transmission part 224; bushing 225; second opening 227; end cover (228, 229); fixed shaft 230; connecting shaft 231; transmission gear 232; engaging protrusion 233; anti-rotation groove 234; anti-rotation part 235. DETAILED DESCRIPTION

[0030] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0031] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0032] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but optionally includes one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0033] See also Figure 1 and Figure 2 The cleaning robot 100 includes a body 10 and a roller brush assembly 20. The front end bottom of the body 10 has a cavity 10a. The roller brush assembly 20 is located in the cavity 10a. The opposite ends of the roller brush assembly 20 are rotatably connected to the two opposite side walls of the body 10 respectively.

[0034] The front end of the main body 10 refers to one end of the forward direction of the cleaning robot 100. The front bottom of the main body 10 is the part close to the bottom of the pool when the main body 10 is working at the bottom of the pool.

[0035] For further information, see Figure 1 and Figure 2 The cleaning robot 100 also includes a garbage collection device (located at Figure 2 The garbage collecting device is arranged in the fuselage main body 10, and the garbage collecting device is located at the rear end of the roller brush assembly 20 (the end away from the front end of the fuselage main body 10). The garbage collecting device has a garbage collecting port, and the position of the garbage collecting port corresponds to the position of the roller brush assembly 20, so that the roller brush assembly 20 can roll toward the side where the garbage collecting device is located. The roller brush assembly 20 pushes the garbage into the garbage collecting device through the garbage collecting port during the rolling process.

[0036] Optionally, the cleaning robot 100 can perform underwater cleaning and surface cleaning. The cleaning robot 100 is in an upright state to perform underwater cleaning. The cleaning robot 100 is in an inverted state to perform surface cleaning. Whether it is underwater cleaning or surface cleaning, the roller brush assembly 20 rolls to bring garbage into the garbage collection device. In other words, the cleaning robot 100 reuses the same roller brush assembly 20 during underwater cleaning and surface cleaning.

[0037] See also Figure 3 and Figure 4 The roller brush assembly 20 includes at least one roller structure 21 and at least one brush 22 . Figure 3 and Figure 4In each case, two roller structures 21 are fixedly connected together to form a roller brush assembly 20 , and a circle of brushes 22 is arranged around each roller structure 21 .

[0038] The structure of a drum structure 21 is described below by way of example.

[0039] See also Figures 5 to 8 The roller structure 21 includes a coaxially arranged rotating connection portion 211 and a brush mounting portion 212. The brush mounting portion 212 and the rotating connection portion 211 both extend along the axial direction of the roller structure. Optionally, the rotating connection portion 211 and the brush mounting portion 212 can be interconnected as a whole. The rotating connection portion 211 is arranged in the brush mounting portion 212. Furthermore, the brush 22 is arranged around the circumference of the brush mounting portion 212. The brushes 22 are arranged on the outer peripheral surface of the brush mounting portion 212 at intervals along the circumference of the brush mounting portion 212.

[0040] See also Figures 5 to 8 The brush mounting portion 212 is sleeved on the outer periphery of the rotating connection portion 211 and connected to the rotating connection portion 211. Optionally, the brush mounting portion 212 and the rotating connection portion 211 may be connected at the ends, or the brush mounting portion 212 and the rotating connection portion 211 may be connected in the middle, for example, the middle position of the outer surface of the rotating connection portion 211 is connected to the middle position of the inner surface of the brush mounting portion 212. Figure 5 The middle brush mounting portion 212 is connected to the rotation connection portion 211 at the end.

[0041] See also Figures 5 to 8 , the brush mounting part 212 is located on the outer peripheral side of the rotating connecting part 211 and a first inner cavity 213 is formed between the two. At least one end of the brush mounting part 212 is configured with a first opening 214. The first opening 214 is used for water to flow into the first inner cavity 213 or for water in the first inner cavity 213 to flow out. The first inner cavity 213 may be an annular chamber. At least one end of the brush mounting part 212 is provided with a first opening 214. In other words, one end of the brush mounting part 212 is an open end, and the first opening 214 connects the first inner cavity 213 with the outside. The first opening 214 facilitates the discharge of accumulated water in the first inner cavity 213 of the roller brush assembly 20 or the entry of water. In this embodiment, one end of the brush mounting part 212 is an open structure (provided with a first opening 214), so it is not easy to form accumulated water in the brush mounting part 212, reducing the weight of the cleaning robot 100 when it is lifted out. When water accumulates in the brush mounting portion 212, the accumulated water can be poured out by tilting the cleaning robot 100 or tilting the roller brush assembly 20. One end of the brush mounting portion 212 is an open structure (with a first opening 214), which can also increase the sinking speed of the cleaning robot 100 during the process of sinking to the bottom of the water, thereby improving work efficiency.

[0042] In the existing roller, because one end of the brush mounting part 212 needs to be connected to the gear assembly, an end cover is provided (that is, one end of the brush mounting part 212 is a closed end). The end cover is connected to the gear assembly, and a through hole is constructed on the end cover for water to flow in or out. However, since the end cover is provided at one end of the brush mounting part 212, the water flow rate becomes smaller, and the speed of water drainage or water intake is reduced, and water cannot be drained or water intake quickly. Water drainage is when the robot is lifted out of the water. If the water is not drained in time, the user needs to spend more effort. Water intake is when the robot is thrown into the water for work. If the water intake is slow, the robot will sink to the bottom of the water very slowly, reducing work efficiency.

[0043] A roller brush assembly 20 provided in an embodiment of the present application includes a roller structure 21 and a brush 22, wherein the roller structure 21 includes a coaxially arranged brush mounting portion 212 and a rotating connection portion 211, wherein the brush mounting portion 212 and the rotating connection portion 211 both extend along the axial direction of the roller structure 21, and the brush 22 is arranged on the outer peripheral surface of the brush mounting portion 212 at circumferential intervals along the brush mounting portion 212, wherein the brush mounting portion 212 is located on the outer peripheral side of the rotating connection portion 211 and a first inner cavity 213 is formed therebetween, and at least one end of the brush mounting portion 212 is configured with a first opening 214, wherein the first opening 214 is used for supplying water to flow into the first inner cavity 213 or for supplying water in the first inner cavity 213 to flow out, and the provision of the first opening 214 can accelerate the drainage or water inlet into the roller structure 21. The faster water drainage speed allows the user to lift the cleaning robot 100 out of the water without having to exert much effort. The faster water intake speed allows the cleaning robot 100 to sink to the bottom of the water faster when the user throws the robot into the water to work, thereby improving work efficiency.

[0044] Optional, see Figures 5 to 8 The rotating connection part 211 has a second inner cavity 215. The end of the rotating connection part 211 close to the first opening 214 is a closed end, and the end of the rotating connection part 211 away from the first opening 214 has a second opening 227, and the second opening 227 is connected to the second inner cavity 215. The second opening 227 is used to supply water to flow into the second inner cavity 215 or to allow water in the second inner cavity 215 to flow out.

[0045] Specifically, the rotating connection part 211 has a second inner cavity 215 arranged along the axial direction. In other words, the rotating connection part 211 is a hollow structure. To reduce the weight of the rotating connection part 211, the weight of the roller brush can be reduced, and then the weight of the whole machine can be reduced, making it easier for the cleaning robot 100 to adjust the center of gravity to be stable when cleaning the water surface.

[0046] The rotating connection part 211 is provided with at least one through hole 216 penetrating the second inner cavity 215 and the first inner cavity 213. The through holes 216 are arranged on the outer circumferential surface of the rotating connection part 211 at intervals along the circumferential direction of the rotating connection part 211. Each of the through holes 216 extends along the axial direction of the rotating connection part 211.

[0047] In this embodiment, the rotating connection part 211 is provided with at least one conducting hole 216 that penetrates the inner surface and the outer surface of the rotating connection part 211. Take the case where the number of the conducting holes 216 is multiple as an example. The multiple conducting holes 216 increase the drainage rate of the accumulated water in the rotating connection part 211. Among them, the conducting hole 216 is a strip hole extending along the axial direction of the rotating connection part 211, so that the water in the rotating connection part 211 can flow into the first inner cavity 213 more easily through the conducting hole 216, and then in the process of the cleaning robot 100 being lifted out of the water, it is convenient to discharge the accumulated water in the rotating connection part 211 and reduce the accumulated water in the rotating connection part 211; or in the process of the cleaning robot 100 sinking, it is convenient for water to enter the second inner cavity 215 through the first opening 214 and the conducting hole 216.

[0048] See also Figures 9 to 11 , the accumulated water in the rotating connection part 211 flows into the first inner cavity 213 through the conducting hole 216, and flows out from the first opening 214. The direction indicated by the arrow in the figure is the path for the accumulated water to be discharged.

[0049] In other embodiments, the rotating connection portion 211 may also be a solid structure to improve the structural strength of the rotating connection portion 211 .

[0050] Optionally, one end of the brush mounting portion 212 away from the first opening 214 is sealedly connected to the outer surface of the rotating connection portion 211. One end of the rotating connection portion 211 close to the first opening 214 is a closed end. One end of the rotating connection portion 211 away from the first opening 214 is an open end.

[0051] For details, please refer to Figures 5 to 8The rotating connection part 211 and the brush mounting part 212 are an inner and outer outer structure, the first end 212a of the brush mounting part 212 corresponds to the third end 211a of the rotating connection part 211, and the second end 212b of the brush mounting part 212 corresponds to the fourth end 211b of the rotating connection part 211. Among them, the first end 212a of the brush mounting part 212 is an open end, and the third end 211a of the rotating connection part 211 is a closed end, so as to facilitate connection with the subsequent gear assembly. The first opening 214 is an annular opening. The second end 212b of the brush mounting part 212 is a closed end, so as to facilitate connection between the second ends 212b of two adjacent brush mounting parts 212, and the fourth end 211b of the rotating connection part 211 is an open end, so as to facilitate communication between the first inner cavities 213 of two adjacent rotating connection parts 211.

[0052] The closed end described in the present application may be provided with some fixing holes, mounting holes, etc.

[0053] When water accumulates in the rotating connection part 211, the accumulated water can flow into the first inner cavity 213 between the brush mounting part 212 and the rotating connection part 211 through the conducting hole 216. Furthermore, the accumulated water in the first inner cavity 213 between the brush mounting part 212 and the rotating connection part 211 can flow out of the roller brush assembly 20 through the first opening 214, thereby reducing the water accumulation inside the roller brush assembly 20.

[0054] Optionally, a manual mode or an automatic mode may be adopted when cleaning the accumulated water in the roller brush assembly 20 . In the manual mode, the user pours out the accumulated water in the roller brush assembly 20 by manually tilting the cleaning robot 100 .

[0055] The automatic mode includes the cleaning robot 100 receiving an instruction from the user to clean up the accumulated water (including but not limited to voice, button trigger, etc.), and the cleaning robot 100 drives the roller brush assembly 20 to rotate, and by designing the internal structure of the roller brush assembly 20, such as forming a spiral flow channel, the accumulated water in the roller brush assembly 20 is thrown out from the first opening 214 under the action of centrifugal force.

[0056] In the present embodiment, when the user needs to clean up the accumulated water, the user turns on the accumulated water cleaning mode of the cleaning robot 100 , and the cleaning robot 100 drives the roller brush assembly 20 to rotate to clean up the accumulated water without manually pouring it out.

[0057] In addition, the roller brush assembly 20 may be rotated manually to discharge the accumulated water in the roller brush assembly 20 .

[0058] See also Figures 4 to 8, the roller brush assembly 20 includes at least two roller structures 21. At least two of the roller structures 21 are spaced apart along their axial direction. At least two of the roller structures 21 can rotate relative to each other. Most of the water in the second inner cavity 215 flows into the first inner cavity 213 from the conducting hole and then flows out from the first opening 214. A small part of the water in the second inner cavity 215 flows out through the second opening 227 and the gap between the two adjacent roller structures 21. In other words, the second inner cavity 215, the conducting hole 216, the first inner cavity 213 and the first opening 214 form a first water path, the second inner cavity 215, the second opening 227 and the gap between the two adjacent roller structures 21 form a second water path, and the water flux on the first water path is greater than the water flux on the second water path. In this way, the water in the second inner cavity 215 can be discharged through the conducting hole 216, the first inner cavity 213, and the first opening 214, and can also be discharged through the second opening 227 and the gap between two adjacent drum structures 21. The drainage path of the second inner cavity 215 is increased, and the drainage rate is also increased. Correspondingly, the water inlet path is also increased, and the water inlet rate is also increased.

[0059] For details, please refer to Figure 3 and Figure 4 The at least one roller structure 21 includes a first roller structure 222 and a second roller structure 223 connected in the axial direction. The first opening 214 of the first roller structure 222 and the first opening 214 of the second roller structure 223 are arranged opposite to each other.

[0060] The first roller structure 222 and the second roller structure 223 have the same structure. The closed end of the brush mounting portion 212 in the first roller structure 222 is connected to the closed end of the brush mounting portion 212 in the second roller structure 223. The second opening 227 of the rotating connection portion 211 in the first roller structure 222 is connected to the second opening 227 of the rotating connection portion 211 in the second roller structure 223. The outer surfaces of the brush mounting portions 212 of the first roller structure 222 and the second roller structure 223 are surrounded by brushes 22.

[0061] See also Fig.12, the two adjacent roller structures 21 (the first roller structure 222 and the second roller structure 223) are each connected to an end cover (228, 229). The two end covers (228, 229) are respectively fixed at the second openings 227 of the two adjacent roller structures 21 (the first roller structure 222 and the second roller structure 223). The two end covers (228, 229) are both hollow and have a fixed shaft 230 passing through them. The two end covers (228, 229) are respectively rotatably connected to the fixed shaft 230. The fixed shaft realizes the axial fixation of the two roller structures 21, thereby increasing the axial dimension of the roller brush assembly 20.

[0062] In an alternative embodiment, see Figure 3 and Figure 4 , Fig.12 , the roller brush assembly 20 further includes at least one gear transmission member 224. The gear transmission member 224 includes a connecting shaft 231 and a transmission gear 232, one end of the connecting shaft 231 is connected to the rotating connection portion 211, and the other end of the connecting shaft 231 is connected to the transmission gear 232, and the transmission gear 232 is used to mesh with the driving gear of the cleaning robot 100. The driving gear of the cleaning robot 100 rotates under the drive of the motor, and then drives the roller brush assembly 20 to rotate through the gear transmission member 224.

[0063] The connecting shaft 231 of the gear transmission member 224 is coaxially connected to the closed end of the rotating connection part 211. For example, there are two gear transmission members 224, and the rotating shafts of the two gear transmission members 224 are respectively connected to the closed end of the rotating connection part 211 of the first roller structure 222 and the closed end of the rotating connection part 211 of the second roller structure 223. The two gear transmission members 224 are meshed and connected with the driving components on both sides of the fuselage body 10.

[0064] In an alternative embodiment, see Figure 3 and Figure 4 , Fig.12 The roller brush assembly 20 further includes a sleeve 225. The sleeve 225 is sleeved on the periphery of the rotating shaft of the gear transmission member 224 and connected to the rotating connection portion 211. A plurality of engaging protrusions 233 are provided on the outer surface of the sleeve 225. The engaging protrusions 233 are used to engage with the engaging positions of the body 10 of the cleaning robot when the roller brush assembly 20 is configured to the cleaning robot, so that the roller structure 21 can rotate around the sleeve 225 while the two ends of the roller brush assembly 20 are fixedly installed with the body 10. In this way, the roller brush assembly 20 can be rotated relative to the body 10 while being arranged on the body 10.

[0065] The end of the rotating connection part 211 close to the first opening 214 is configured with a rotation-stopping groove 234. One end of the connecting shaft is provided with a rotation-stopping part 235 adapted to the rotation-stopping groove 234. The rotation-stopping part 235 is inserted into the rotation-stopping groove 234. In this embodiment, the rotation-stopping groove 234 is designed to cooperate with the rotation-stopping part 235 to realize the synchronous rotation of the rotating connection part 211 and the gear transmission member 224.

[0066] In an alternative embodiment, see Figure 5 and Figure 6 A plurality of baffles 218 are provided between the brush mounting portion 212 and the rotating connecting portion 211. The baffles 218 are spaced apart along the circumference of the brush mounting portion 212, and each of the baffles 218 extends along the axial direction of the brush mounting portion 212. A chamber is formed between two adjacent baffles 218. At least one conducting hole 216 is provided in each of the chambers.

[0067] The baffle 218 is disposed between the inner surface of the brush mounting portion 212 and the outer surface of the rotating connection portion 211. In other words, one end of the baffle 218 is connected to the inner surface of the brush mounting portion 212, and the other end of the baffle 218 is connected to the outer surface of the rotating connection portion 211. The baffle 218 is supported between the inner surface of the brush mounting portion 212 and the outer surface of the rotating connection portion 211 to provide the structural strength of the roller brush assembly 20 in the radial direction. Optionally, the baffle 218 can be disposed in the axial direction. The baffle 218 is formed integrally with the brush mounting portion 212 and the rotating connection portion 211.

[0068] See also Figure 5 and Figure 6 The plurality of baffles 218 divide the first inner cavity 213 (annular cavity) into a plurality of cavities 219 . Each of the cavities 219 corresponds to at least one of the conducting holes 216 .

[0069] Optional, see Figure 5 and Figure 6 The drum structure 21 further includes at least one first convex strip 217. The first convex strip 217 is convexly arranged on the inner surface of the brush mounting portion 212. The first convex strip 217 is formed integrally with the brush mounting portion 212. The first convex strip 217 is used to enhance the structural strength of the drum structure 21.

[0070] In an optional embodiment, the first convex strip 217 extends in the axial direction of the brush mounting portion 212. There are multiple first convex strips 217, which are arranged at intervals along the circumferential direction of the inner surface of the brush mounting portion 212.

[0071] In another optional embodiment, the first convex strip 217 extends in an inclined or spiral shape along the inner surface of the brush mounting portion 212, and the first convex strip 217 extends to the first end 212a (open end) of the brush mounting portion 212. Specifically, during the rotation of the roller brush assembly 20, the water in the first inner cavity 213 is close to the inner surface of the brush mounting portion 212 under the action of centrifugal force. By designing the first convex strip 217 to extend in an inclined or spiral shape along the inner surface of the brush mounting portion 212 to the first opening 214, a flow channel leading to the first opening 214 is formed between two adjacent first convex strips 217, and the accumulated water in the first inner cavity 213 can be thrown out from the first opening 214 during the rotation of the roller brush assembly 20. In this embodiment, the first convex strip 217 is designed to enhance strength while forming a spiral flow path during the rotation of the roller brush assembly 20, thereby guiding the accumulated water in the first inner cavity 213 to the first opening 214, so as to throw the accumulated water out from the first opening 214 during the rotation of the roller brush assembly 20.

[0072] When the first convex strip 217 is inclined along the inner surface of the brush mounting portion 212 , during the rotation of the roller brush assembly 20 , the first convex strip 217 not only generates a tangential component force along the circumference of the drum, but also generates a component force toward the first opening 214 , thereby throwing the accumulated water out from the first opening 214 .

[0073] Optionally, the baffle 218 is a hollow structure, for example, water communication can be achieved between adjacent chambers 219. Since the roller brush assembly 20 is rotating, if there is water in the chamber 219 of the roller brush assembly 20, the water forms a rotation resistance to the roller brush assembly 20 during the rotation of the roller brush assembly 20. In this way, the design of the baffle 218 not only achieves structural support but also achieves internal water conduction, reduces the rotation resistance caused by water resistance, and avoids the problem of water accumulation in a certain chamber 219 and difficulty in discharge, thereby improving the efficiency of water discharge.

[0074] See also Figure 5 and Figure 6 Each chamber 219 corresponds to at least one conducting hole 216 , so that the accumulated water in the rotating connecting portion 211 can flow into the chamber 219 through the conducting hole 216 .

[0075] Optionally, each chamber 219 corresponds to a plurality of conducting holes 216 , so as to accelerate the rate at which the accumulated water in the rotating connection portion 211 flows into the chamber 219 through the conducting holes 216 .

[0076] Optionally, the present application does not limit the position of the through hole 216. For example, the through hole 216 may be disposed at a middle position between two adjacent baffles 218.

[0077] For another example, when the roller brush assembly 20 rotates clockwise, the conducting hole 216 may be close to the right baffle 218 position of the chamber 219 (with the position in the figure as a reference). During the rotation of the roller brush assembly 20, the accumulated water in the rotating connection part 211 enters the first inner cavity 213 through the conducting hole 216 under the action of centrifugal force. Since the roller brush assembly 20 rotates clockwise, the accumulated water in the first inner cavity 213 will accumulate to the left baffle 218 position. By placing the conducting hole 216 close to the right baffle 218 position of the chamber 219, the accumulated water in the first inner cavity 213 is prevented from flowing into the rotating connection part 211 through the conducting hole 216, so that the accumulated water in the rotating connection part 211 and the accumulated water in the first inner cavity 213 can be discharged during the rotation of the roller brush assembly 20.

[0078] Accordingly, when the roller brush assembly 20 rotates counterclockwise, the conducting hole 216 can be close to the left baffle 218 of the chamber 219 (with the position in the figure as a reference), so as to prevent the accumulated water in the first inner cavity 213 from flowing into the rotating connection part 211 through the conducting hole 216, so as to facilitate the discharge of the accumulated water in the rotating connection part 211 and the accumulated water in the first inner cavity 213 during the rotation of the roller brush assembly 20.

[0079] When there are multiple conducting holes 216, the multiple conducting holes 216 are arranged near the baffle 218 on the other side. Because during the rotation, the water in the first inner cavity 213 rotates counterclockwise or clockwise and moves toward the baffle 218 on one side, so multiple conducting holes 216 are arranged near the baffle 218 on the other side, which is conducive to the accumulated water in the rotating connection part 211 to flow into the first inner cavity 213, and also prevents the water in the first inner cavity 213 from flowing back into the rotating connection part 211 from the conducting holes 216, but instead flows out from the first opening 214 along the first convex strip 217.

[0080] In an alternative embodiment, see Figure 7 and Figure 8 The drum structure 21 further includes at least one second convex strip 220. The second convex strip 220 is convexly disposed on the inner surface of the rotating connection portion 211. The second convex strip 220 is formed integrally with the rotating connection portion 211. The second convex strip 220 is used to enhance the structural strength of the drum structure 21.

[0081] In an alternative embodiment, see Figure 7 and Figure 8 The extending direction of the second convex strip 220 is the axial direction of the brush mounting portion 212. There are multiple second convex strips 220, and the number of the multiple second convex strips 220 is arranged at intervals along the circumferential direction of the inner surface of the brush mounting portion 212.

[0082] In another optional embodiment, the second convex strip 220 extends in an inclined or spiral shape along the inner surface of the rotating connection part 211, and the second convex strip 220 extends to the conduction hole 216. Specifically, during the rotation of the roller brush assembly 20, the water in the rotating connection part 211 is close to the inner surface of the rotating connection part 211 under the action of centrifugal force. By designing the second convex strip 220 to extend in an inclined or spiral shape along the inner surface of the rotating connection part 211 to the conduction hole 216, a flow channel leading to the conduction hole 216 is formed between two adjacent second convex strips 220, and the accumulated water in the rotating connection part 211 can be thrown out from the conduction hole 216 during the rotation of the roller brush assembly 20. In this embodiment, the second convex strip 220 is designed. While enhancing the strength, the second convex strip 220 can also form a spiral flow channel during the rotation of the roller brush assembly 20, thereby guiding the accumulated water in the rotating connection portion 211 to the guide hole 216, so that the accumulated water can be thrown out from the guide hole 216 into the first inner cavity 213 during the rotation of the roller brush assembly 20. Combined with the above-mentioned position design between the guide hole 216 and the baffle 218, as well as the design of the first convex strip 217, the roller brush assembly 20 can throw the accumulated water in the first inner cavity 213 out of the first opening 214 during the rotation.

[0083] Optionally, the roller brush assembly 20 further includes a cover adapted to the first opening 214. When the cleaning robot 100 performs underwater cleaning, the cover is opened to allow water to enter the first inner cavity 213 and the rotating connection portion 211 of the roller brush assembly 20, so as to facilitate the sinking of the cleaning robot 100; when the cleaning robot 100 performs above-water cleaning, the cover is closed to form a structure similar to a floating cavity in the first inner cavity 213 of the roller brush assembly 20. After the cleaning robot 100 finishes cleaning, the cover is opened to pour out the accumulated water in the roller brush assembly 20.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A roller brush assembly, characterized in that: It includes a roller structure and a brush, the roller structure includes a coaxially arranged brush mounting part and a rotating connection part, the brush mounting part and the rotating connection part both extend along the axial direction of the roller structure, the brushes are arranged on the outer peripheral surface of the brush mounting part at intervals along the circumference of the brush mounting part, the brush mounting part is located on the outer peripheral side of the rotating connection part and a first inner cavity is formed therebetween, at least one end of the brush mounting part is configured with a first opening, the first opening is used to supply water to flow into the first inner cavity or to supply water in the first inner cavity to flow out.

2. The roller brush assembly according to claim 1, characterized in that: The rotating connection part is configured with a second inner cavity, wherein the end of the rotating connection part close to the first opening is a closed end, and the end of the rotating connection part away from the first opening has a second opening, the second opening is connected to the second inner cavity, and the second opening is used to supply water to flow into the second inner cavity or to supply water in the second inner cavity to flow out.

3. The roller brush assembly according to claim 2, characterized in that: The rotating connection part is provided with a plurality of conducting holes penetrating the first inner cavity and the second inner cavity. The plurality of conducting holes are arranged at intervals along the circumference of the rotating connection part on the outer peripheral surface of the rotating connection part, and each of the conducting holes extends along the axial direction of the rotating connection part.

4. The roller brush assembly according to claim 3, characterized in that: The roller brush assembly includes at least two roller structures, at least two of the roller structures are spaced apart along their axial direction, and at least two of the roller structures can rotate relative to each other. The second inner cavity, the conducting hole, the first inner cavity and the first opening form a first water path, and the second inner cavity, the second opening and the gap between two adjacent roller structures form a second water path. The water flux on the first water path is greater than the water flux on the second water path.

5. The roller brush assembly according to claim 4, characterized in that: Each of the two adjacent roller structures is connected to an end cover, and the two end covers are respectively fixed at the second openings of the two adjacent roller structures. The two end covers are both hollow and have a fixed shaft passing through them. The two end covers are respectively rotatably connected to the fixed shaft.

6. The roller brush assembly according to claim 1, characterized in that: The roller brush assembly also includes a gear transmission component, which includes a connecting shaft and a transmission gear. One end of the connecting shaft is connected to the rotating connection part, and the other end of the connecting shaft is connected to the transmission gear. The transmission gear is used to mesh with the driving gear of the cleaning robot.

7. The roller brush assembly according to claim 6, characterized in that: The roller brush assembly also includes a shaft sleeve, which is sleeved on the periphery of the connecting shaft. The outer surface of the shaft sleeve is provided with a plurality of engaging protrusions, and the engaging protrusions are used to engage with the engaging positions of the body of the cleaning robot when the roller brush assembly is configured to the cleaning robot.

8. The roller brush assembly according to claim 6, characterized in that: A rotation-stop groove is configured at one end of the rotating connection portion close to the first opening, and a rotation-stop portion adapted to the rotation-stop groove is disposed at one end of the connecting shaft, and the rotation-stop portion is inserted into the rotation-stop groove.

9. The roller brush assembly according to claim 3, characterized in that: A plurality of baffles are provided between the brush mounting portion and the rotating connection portion, and the baffles are distributed at intervals along the circumference of the brush mounting portion, and each of the baffles extends along the axial direction of the brush mounting portion. A chamber is formed between two adjacent baffles, and at least one conducting hole is provided in each of the chambers.

10. A cleaning robot, characterized in that: The cleaning robot comprises a body and a roller brush assembly as claimed in any one of claims 1 to 9, wherein the roller brush assembly is arranged on the body and is rotatably connected to two opposite side walls of the body.

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