Rolling brush mechanism and cleaning robot

Abstract

The utility model relates to a rolling brush mechanism and a cleaning robot, the rolling brush mechanism comprises a rolling brush assembly and a mounting assembly, the rolling brush assembly comprises a rolling brush body, a first shielding part and a second shielding part, the first shielding part is arranged on the peripheral surface of the rolling brush body in a surrounding mode and located at one axial end of the rolling brush body, and the second shielding part is located at the other axial end of the rolling brush body; the second shielding piece is arranged on the peripheral face of the rolling brush body in a surrounding mode and located at the other axial end of the rolling brush body, the mounting assembly comprises a first mounting piece and a second mounting piece, fixing grooves are formed in the first mounting piece and the second mounting piece, and the first shielding piece and the second shielding piece are correspondingly located in the fixing grooves respectively and are in interference fit with the fixing grooves; according to the rolling brush mechanism and the cleaning robot, the first shielding piece and the second shielding piece are arranged at the two axial ends of the rolling brush body correspondingly, so that hair, fibers and other objects can be blocked by the first shielding piece and the second shielding piece, and the problems that the robot is damaged and potential safety hazards are caused by the hair, the fibers and other objects are solved.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, and in particular to roller brush mechanisms and cleaning robots. Background Technology

[0002] With the improvement of economic level and the continuous acceleration of work and life pace, cleaning robots can replace manual cleaning to perform automated cleaning, effectively reducing the intensity of indoor cleaning work for consumers, and are therefore very popular among consumers.

[0003] Currently, most cleaning robots on the market use rotating brushes to pick up dust, trash, and debris from the ground and send them into a waste collection system to achieve cleaning.

[0004] However, when existing cleaning robots are cleaning, hair and lint often get tangled on the roller brush. Sometimes, hair and lint can even get into the base of the roller brush at both ends, causing the roller brush to wear out or get stuck, resulting in damage to the robot and safety hazards. Utility Model Content

[0005] Therefore, it is necessary to provide a roller brush mechanism and a cleaning robot to address the problem that hair and lint wrapped around the roller brush can enter the base at both ends of the roller brush, causing damage to the robot and safety hazards.

[0006] According to one aspect of this application, a roller brush mechanism is provided, comprising:

[0007] A roller brush assembly includes a roller brush body, a first shielding member and a second shielding member. The first shielding member is disposed around the outer peripheral surface of the roller brush body and is located at one axial end of the roller brush body. The second shielding member is disposed around the outer peripheral surface of the roller brush body and is located at the other axial end of the roller brush body.

[0008] The mounting assembly includes a first mounting component and a second mounting component. Both the first mounting component and the second mounting component are provided with a fixing groove. The first blocking component and the second blocking component are respectively located in the fixing groove and are interference-fitted with the fixing groove.

[0009] In one embodiment, at least one of the first shielding member and the second shielding member includes a flexible member, the flexible member being disposed around the shaft end of the roller brush body, and the end of each flexible member facing away from the roller brush body abutting against the fixing groove.

[0010] In one embodiment, at least one of the first shielding member and the second shielding member further includes a shielding ring, the shielding ring being sleeved on the shaft end of the roller brush body, and the distance between the shielding ring and the opening of the fixing groove is greater than the distance between the flexible member and the opening of the fixing groove.

[0011] In one embodiment, the flexible component includes a first flexible component and a second flexible component; the fixing groove includes a first fixing groove and a second fixing groove, wherein the first fixing groove is disposed on the first mounting member and the second fixing groove is disposed on the second mounting member;

[0012] The first shielding member includes a plurality of first flexible members, all of which are arranged around one axial end of the roller brush body, and the end of each first flexible member facing away from the roller brush body abuts against the first fixing groove.

[0013] The second shielding member includes a plurality of second flexible members, all of which are arranged around the other end of the roller brush body along the axial direction, and the end of each second flexible member facing away from the roller brush body abuts against the second fixing groove.

[0014] In one embodiment, the shielding ring includes a first shielding ring and a second shielding ring;

[0015] The first shielding member includes a first shielding ring, which is sleeved on one axial end of the roller brush body, and the distance between the first shielding ring and the opening of the first fixing groove is greater than the distance between the first flexible member and the opening of the first fixing groove.

[0016] The second shielding member includes a second shielding ring, which is sleeved on the other axial end of the roller brush body, and the distance between the second shielding ring and the opening of the second fixing groove is greater than the distance between the second flexible member and the opening of the second fixing groove.

[0017] In one embodiment, the roller brush mechanism further includes a drive assembly disposed on the mounting assembly and connected to the roller brush assembly via a drive shaft, the drive assembly being configured to drive the roller brush assembly to rotate about its own axis via the drive shaft.

[0018] In one embodiment, the first mounting component is further provided with a positioning groove, the positioning groove and the first fixing groove are spaced apart along the axial direction of the roller brush body, and the positioning groove and the first fixing groove are connected through a through hole.

[0019] A portion of the drive shaft is located within the positioning groove and has a first gap with the positioning groove. Another portion of the drive shaft passes through the through hole and is connected to the roller brush assembly located within the first fixing groove. The roller brush assembly has a second gap with the through hole and a third gap with the first fixing groove. The first gap, the second gap, and the third gap cooperate to form a labyrinth structure.

[0020] In one embodiment, the roller brush assembly has an internal elastic element, and one end of the drive shaft is inserted into the interior of the roller brush assembly along the axial direction of the roller brush assembly and is interference-fitted with the elastic element.

[0021] In one embodiment, the drive shaft is provided with an oil seal, the mounting assembly has a cavity hole that mates with the oil seal, and the mounting assembly has an overflow port that is wider inside and narrower outside, the overflow port connecting the cavity hole to the outside.

[0022] In one embodiment, the inlet direction of the overflow port is toward the rotation direction of the drive shaft, and the angle between the overflow port and the rotation direction of the drive shaft is an acute angle; and / or, the lower edge of the overflow port is lower than the lower edge of the diameter of the drive shaft.

[0023] According to another aspect of this application, a cleaning robot is provided, including a roller brush mechanism as described in any of the above embodiments.

[0024] The aforementioned roller brush mechanism and cleaning robot, by setting a first blocking member and a second blocking member at both ends of the axial direction of the roller brush body, and by ensuring that the first blocking member can be interference-fitted with the fixing groove corresponding to the first mounting member, and the second blocking member can be interference-fitted with the fixing groove corresponding to the second mounting member, ensure that after the roller brush assembly is installed with the mounting assembly, hair, fibers and other objects can be blocked by the first blocking member and the second blocking member, making it difficult for them to enter the interior of the mounting assembly, thus solving the problem of damage to the robot and safety hazards caused by hair, fibers and other objects. Attached Figure Description

[0025] Figure 1 This is a perspective view of the brush mechanism of some embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the structure of the roller brush mechanism in some embodiments of this application.

[0027] Figure 3 for Figure 2 A magnified view of part A.

[0028] Figure 4 for Figure 2 A magnified view of part B.

[0029] Figure 5 This is a schematic diagram of the structure between the drive shaft and the first mounting member of the roller brush mechanism in some embodiments of this application.

[0030] Figure 6 This is a schematic diagram of the structure between the cavity hole and the overflow port of the roller brush mechanism in some embodiments of this application.

[0031] Figure label:

[0032] 1. Roller brush assembly;

[0033] 11. First shielding component; 111. First shielding ring; 112. First flexible component;

[0034] 12. Second shielding component; 121. Second shielding ring; 122. Second flexible component;

[0035] 13. Brush body; 14. Brush bristle structure; 15. Elastic component;

[0036] 2. Mounting components; 21. First mounting component; 22. Second mounting component; 23. First fixing groove; 24. Second fixing groove; 25. Bearing; 26. Cavity hole; 27. Overflow port; 28. Oil seal; 29. ​​Positioning groove;

[0037] 3. Drive assembly; 31. Driver; 32. Drive shaft; 33. Transmission component; 34. Tip;

[0038] 4. Maze structure; 41. First gap; 42. Second gap; 43. Third gap. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] During the cleaning process, hair, lint, and other debris on the floor can become entangled on the cylindrical body of a cleaning robot's sweeping or scrubbing brush as it rotates. As more and more hair gets entangled at both ends of the brush, a large amount of hair, lint, and other debris fills the space between the brush and the base at both ends, and even enters the interior of the base. This increases the resistance to the brush's rotation and can even cause the brush to jam and become unable to rotate, resulting in damage to the robot.

[0041] Therefore, this application provides a roller brush mechanism and a cleaning robot, which solves the above-mentioned problem by setting a shield between the roller brush and the substrate, so that hair, lint and other objects can be blocked by the shield and thus are less likely to enter the interior of the substrate.

[0042] See Figure 1 and Figure 2This application provides a roller brush mechanism, including a roller brush assembly 1 and a mounting assembly 2. The mounting assembly 2 is used to mount the roller brush assembly 1. Specifically, the mounting assembly 2 includes a first mounting member 21 and a second mounting member 22, which are spaced apart along the axial direction of the roller brush assembly 1, so that both axial ends of the roller brush assembly 1 can be respectively mounted on the first mounting member 21 and the second mounting member 22.

[0043] In one embodiment, the roller brush assembly 1 is detachably connected to the first mounting member 21, and the roller brush assembly 1 is fixedly connected to the second mounting member 22. When the roller brush assembly 1 is removed from the first mounting member 21, the roller brush assembly 1 and the second mounting member 22 are removed together.

[0044] The roller brush assembly 1 includes a roller brush body 13, a first shield 11, and a second shield 12. The outer peripheral surface of the roller brush body 13 is provided with a plurality of bristle structures 14 for cleaning. When the roller brush body 13 rotates, the bristle structures 14 can contact the ground and sweep away garbage or wash the ground.

[0045] See Figures 2-4 The first shielding member 11 is disposed around the outer peripheral surface of the roller brush body 13 and is located at one axial end of the roller brush body 13; the second shielding member 12 is disposed around the outer peripheral surface of the roller brush body 13 and is located at the other axial end of the roller brush body 13. The mounting assembly 2 includes a first mounting member 21 and a second mounting member 22. Both the first mounting member 21 and the second mounting member 22 are provided with fixing grooves (not shown in the figure). The first shielding member 11 and the second shielding member 12 are respectively located in the fixing grooves and are interference fit with the fixing grooves.

[0046] See Figures 2-4 In one embodiment, the fixing groove includes a first fixing groove 23 and a second fixing groove 24. The first fixing groove 23 is disposed on the first mounting member 21, and the second fixing groove 24 is disposed on the second mounting member 22. A first blocking member 11 is disposed around the outer peripheral surface of the roller brush body 13 and is located at one axial end of the roller brush body 13. The first mounting member 21 is provided with the first fixing groove 23. When the roller brush assembly 1 is installed on the first mounting member 21, the first blocking member 11 is located in the first fixing groove 23 and is press-fitted with the first fixing groove 23. By directly inserting one axial end of the roller brush body 13 into the first mounting member 21 and blocking the opening of the first fixing groove 23 by the first blocking member 11, hair, fibers, and other materials are less likely to enter the interior of the first mounting member 21 through the first fixing groove 23, thus solving the problem of damage to the robot and safety hazards caused by hair, fibers, and other materials.

[0047] The second shielding member 12 is arranged around the outer peripheral surface of the roller brush body 13 and located at the other axial end of the roller brush body 13. The second mounting member 22 is provided with a second fixing groove 24. When the roller brush assembly 1 is installed on the second mounting member 22, the second shielding member 12 is located in the second fixing groove 24 and is press-fitted with the second fixing groove 24. By directly inserting the other axial end of the roller brush body 13 into the second mounting member 22 and blocking the opening of the second fixing groove 24 by the second shielding member 12, hair, fibers and other objects are less likely to enter the interior of the second mounting member 22 through the second fixing groove 24, thus solving the problem of damage to the robot and safety hazards caused by hair, fibers and other objects.

[0048] In summary, the roller brush mechanism of this application, by providing a first blocking member 11 and a second blocking member 12 at both ends of the axial direction of the roller brush body 13, and by ensuring that the first blocking member 11 can be interference-fitted with the first fixing groove 23 of the first mounting member 21, and the second blocking member 12 can be interference-fitted with the second fixing groove 24 of the second mounting member 22, ensures that after the roller brush assembly 1 is installed with the mounting assembly 2, hair, fibers, and other materials can be blocked by the first blocking member 11 and the second blocking member 12, making it difficult for them to enter the interior of the mounting assembly 2, thus solving the problem of damage to the robot and safety hazards caused by hair, fibers, and other materials.

[0049] See Figure 1 and Figure 2 In one embodiment, the roller brush mechanism further includes a drive component 3, which is disposed on the mounting component 2 and connected to the roller brush assembly 1. The drive component 3 is configured to drive the roller brush assembly 1 to rotate about its own axis so that the roller brush assembly 1 can perform cleaning work.

[0050] Specifically, in the embodiments of this application, the drive component 3 is disposed on the first mounting member 21 and is drivenly connected to the roller brush body 13. The drive component 3 can drive the roller brush body 13 to rotate around its own axis to clean the bearing surface (e.g., the ground, desktop, or other supporting surface).

[0051] Understandably, in the embodiments of this application, the first mounting member 21 is used to connect the drive assembly 3 and the roller brush assembly 1. The second mounting member 22 is used to connect and support the roller brush assembly 1, and assist the drive assembly 3 in driving the roller brush assembly 1 to rotate.

[0052] For example, the second mounting member 22 is provided with a bearing 25, and the end of the roller brush body 13 opposite to the first mounting member 21 is provided with a rotating shaft (not shown in the figure), which passes through the bearing 25. When the drive assembly 3 drives the roller brush body 13 to rotate, the rotating shaft rotates within the bearing 25.

[0053] In one embodiment, the drive assembly 3 includes a driver 31, on which a drive shaft 32 is mounted. The drive assembly 3 is detachably mounted on the drive shaft 32 and can rotate with the drive shaft 32 under the drive of the driver 31. Specifically, the driver 31 includes a geared motor, which is connected to the drive shaft 32 via a synchronous belt, synchronous pulley, and / or gears, etc., to drive the drive shaft 32 to rotate. The roller brush body 13 has a mounting groove coaxial with it, and an elastic member 15 is provided in the mounting groove. One end of the drive shaft 32 is inserted into the interior of the roller brush body 13 along the axial direction and is press-fitted with the elastic member 15 to press the roller brush body 13 against the first mounting member 21, thereby reducing the gap between the first shielding ring 111 and the first mounting member 21 and preventing hair, fibers, etc. from entering the interior of the first mounting member 21. On the other hand, the detachable connection facilitates the installation and replacement of the roller brush assembly 1 and the drive assembly 3.

[0054] See Figure 1 , Figure 2 and Figure 5 Furthermore, in the embodiments of this application, the mounting groove is formed on the side of the roller brush body 13 facing the first mounting member 21, and extends a distance into the roller brush body 13 along the axial direction of the roller brush body 13. When one end of the drive shaft 32 is inserted into the roller brush body 13 through the mounting groove, the axis of the drive shaft 32 coincides with the axis of the roller brush body 13, so as to ensure that the drive assembly 3 can drive the roller brush body 13 to rotate around its own axis by driving the drive shaft 32 to rotate.

[0055] The elastic element 15 is an elastic block, which is disposed inside the mounting groove and is interference-fitted with the mounting groove. This allows for a large contact force between the elastic block and the mounting groove, effectively distributing the load and reducing loosening caused by vibration or impact, ensuring that the elastic block is securely disposed within the mounting groove. The drive shaft 32 has a pointed tip 34 on the side opposite to the first mounting element 21, and the outer surface of the pointed tip 34 is surrounded by multiple mating planes. When the drive shaft 32 and the elastic element 15 are interference-fitted, the pointed tip 34 is inserted into the interior of the elastic element 15, and the multiple planes abut against the interior of the elastic element 15, effectively increasing the contact area between the drive shaft 32 and the elastic element 15, enhancing the fixing force between them, ensuring a more stable connection, and preventing slippage or loosening.

[0056] See Figure 2 and Figure 5 To prevent leakage of lubricating oil or other liquids inside the driver 31, and to prevent external contaminants from entering, thus ensuring the normal operation of the driver 31, an oil seal 28 is also provided on the drive shaft 32 of the driver 31.

[0057] For details, please refer to Figures 5-6In one embodiment, the mounting assembly 2 has a cavity hole 26 that mates with the drive shaft 32. An oil seal 28 is disposed within the cavity hole 26, and the outer ring of the oil seal 28 is connected to the inner wall of the cavity hole 26 by an interference fit or fastening to prevent fluid leakage from the contact surface between the oil seal 28 and the cavity hole 26, and to prevent external contaminants from entering from the contact surface between the oil seal 28 and the cavity hole 26. The inner ring of the oil seal 28 is in close contact with the outer surface of the drive shaft 32, forming a sealing interface to prevent fluid leakage from the contact surface between the oil seal 28 and the drive shaft 32, and to prevent external contaminants from entering from the contact surface between the oil seal 28 and the drive shaft 32.

[0058] To maintain the normal liquid level and pressure balance in the cavity hole 26 and avoid insufficient or excessive lubrication due to excessively high or low liquid level, the mounting assembly 2 is also provided with an overflow port 27 that connects the cavity hole 26 to the outside.

[0059] The overflow port 27 has an inner wider and outer narrower structure to utilize the pressure difference, flow velocity change, flow resistance, and inertia of the fluid to help liquids and impurities be discharged more easily and prevent them from flowing back in. Furthermore, in the embodiments of this application, the inlet direction of the overflow port 27 faces the rotation direction of the drive shaft 32, and the angle between the inlet and the rotation direction of the drive shaft 32 is acute. This ensures that the centrifugal force generated when the drive shaft 32 rotates pushes the liquids and impurities towards the inlet of the overflow port 27, and assists in the smooth flow of liquids and impurities along the overflow port.

[0060] Furthermore, in the embodiments of this application, the lower edge of the overflow port 27 is lower than the lower diameter edge of the drive shaft 32 to ensure that the contact position between the drive shaft 32 and the oil seal 28 is not submerged by liquid for a long period of time. It is understood that the main function of the oil seal 28 is to prevent liquid or impurities from seeping in from the outside. If the lower edge of the overflow port 27 is too high, liquid may rise to the area of ​​the oil seal 28, causing the oil seal 28 to come into contact with the liquid, thereby damaging the oil seal material or causing leakage. By designing the overflow port 27 to be lower than the lower diameter edge of the drive shaft 32, excessively high liquid levels can be effectively avoided, ensuring that the oil seal 28 does not come into prolonged contact with the liquid, and extending the service life of the oil seal 28. In addition, the overflow port 27, as a drainage channel, with its lower edge lower than the lower diameter edge of the drive shaft 32, also helps to guide liquid out through the overflow port 27, preventing liquid accumulation from adversely affecting the drive shaft 32 and the oil seal 28, and ensuring the self-cleaning and drainage functions of the roller brush mechanism of this application.

[0061] In one embodiment, at least one of the first shielding member 11 and the second shielding member 12 includes a flexible member, which is disposed around the shaft end of the roller brush body 13, and the end of each flexible member facing away from the roller brush body 13 abuts against the fixing groove.

[0062] In one embodiment, at least one of the first shielding member 11 and the second shielding member 12 further includes a shielding ring, which is sleeved on the shaft end of the roller brush body 13, and the distance between the shielding ring and the groove of the fixing groove is greater than the distance between the flexible member and the groove of the fixing groove.

[0063] In one embodiment, the flexible element includes a first flexible element 112 and a second flexible element 122; the fixing groove includes a first fixing groove 23 and a second fixing groove 24, the first fixing groove 23 being disposed on the first mounting member 21 and the second fixing groove 24 being disposed on the second mounting member 22; the shielding ring includes a first shielding ring 111 and a second shielding ring 121.

[0064] See Figure 1 , Figure 2 , Figure 3 and Figure 5 In one embodiment, the first shielding member 11 includes a first shielding ring 111 and a plurality of first flexible members 112. The first shielding ring 111 is sleeved on one axial end of the roller brush body 13 to shield the opening of the first fixing groove 23, making it difficult for hair, fibers, and other objects to enter the interior of the first mounting member 21 through the first fixing groove 23. In the embodiments of this application, the first shielding ring 111 may be a flange. The first shielding ring 111 and the roller brush body 13 may be formed separately or integrally.

[0065] Several first flexible elements 112 are arranged around one axial end of the roller brush body 13, and the distance between the first shielding ring 111 and the opening of the first fixing groove 23 is greater than the distance between the first flexible element 112 and the opening of the first fixing groove 23. The first shielding ring 111 can block large particles of sand and gravel and other impurities from entering the first mounting component 21, and the first shielding ring 111 and the first mounting component 22 maintain a certain distance to avoid friction between the roller brush body 13 and the first mounting component 21 during the rotation of the roller brush body 13, so as to avoid damage to the first shielding ring 111, the first mounting component 22 and the drive assembly 3 that drives the roller brush body 13 to rotate; the first flexible elements 112 can block small particles of sand and dust and other impurities to prevent or reduce the intrusion of sand and dust and other impurities into the oil seal 28 position inside the first mounting component 21. Since the first flexible component 112 is relatively soft, it will not damage the first mounting component 21 during rotation. Furthermore, the end of each first flexible component 112 that is away from the roller brush body 13 abuts against the first fixing groove 23 to ensure the blocking effect of the first flexible component 112 on impurities such as sand and dust.

[0066] Understandably, the first flexible component 112 is a component with a thin and soft structure. In the embodiments of this application, the first flexible component 112 may be a pile, which is used to prevent or reduce the intrusion of impurities such as sand and dust into the oil seal 28 position inside the first mounting component 21 by interference fit between the pile and the first fixing groove 23.

[0067] To further prevent hair, fibers, and other debris from entering the interior of the mounting component 2, and to address the problem of damage to the roller brush mechanism and safety hazards caused by hair, fibers, and other debris, in this embodiment of the application, a positioning groove 29 is also provided inside the first mounting component. The positioning groove 29 and the first fixing groove 23 are spaced apart along the axial direction of the roller brush body 13, and the positioning groove 29 and the first fixing groove 23 are connected through a through hole. The cross-sectional area of ​​the positioning groove 29 along the axial direction of the roller brush body 13 and the cross-sectional area of ​​the first fixing groove 23 along the axial direction of the roller brush body 13 are both greater than the cross-sectional area of ​​the through hole along the axial direction of the roller brush body 13.

[0068] One part of the drive shaft 32 is located within the positioning groove 29, with a first gap 41 between it and the positioning groove 29. Another part of the drive shaft 32 passes through a through hole and connects to the roller brush assembly 1 located within the first fixing groove 23. The roller brush assembly 1 has a second gap 42 between it and the through hole, and a third gap 43 between it and the first fixing groove 23. The first gap 41, the second gap 42, and the third gap 43 cooperate to form a maze structure 4. By setting multiple complex channels and winding paths in the maze structure 4, the difficulty for hair, fibers, and other objects to enter the mounting assembly 2 is increased. When hair, fibers, and other objects enter the maze structure 4, they will be obstructed by turns, narrowness, and other factors, and will not be able to pass smoothly.

[0069] See Figure 2 and Figure 4 In one embodiment, the second shielding member 12 includes a second shielding ring 121 and a plurality of second flexible members 122. The second shielding ring 121 is sleeved on the other axial end of the roller brush body 13 to shield the opening of the second fixing groove 24, making it difficult for hair, fibers, and other objects to enter the interior of the second mounting member 22 through the second fixing groove 24. In the embodiments of this application, the second shielding ring 121 may be a flange. The second shielding ring 121 and the roller brush body 13 may be formed separately or integrally.

[0070] Several second flexible elements 122 are arranged around one axial end of the roller brush body 13, and the distance between the second shielding ring 121 and the opening of the second fixing groove 24 is greater than the distance between the second flexible elements 122 and the opening of the second fixing groove 24. The second shielding ring 121 can prevent large particles of sand and gravel from entering the second mounting member 22, and the second shielding ring 121 and the second mounting member 22 maintain a certain distance to avoid friction between the second shielding ring 121 and the second mounting member 22 during the rotation of the roller brush body 13, which would damage the second shielding ring 121 and the second mounting member 22. The second flexible elements 122 can block small particles of sand and dust, thereby preventing or reducing the intrusion of sand and dust into the bearing 25 position inside the second mounting member 22. Since the second flexible component 122 is relatively soft, it will not damage the second mounting component 22 during rotation. Furthermore, the end of each second flexible component 122 that is away from the roller brush body 13 abuts against the second fixing groove 24 to ensure the blocking effect of the second flexible component 122 on impurities such as sand and dust.

[0071] Understandably, the second flexible component 122 is a component with a thin and flexible structure. In the embodiments of this application, the second flexible component 122 may be a pile, which is used to prevent or reduce the intrusion of impurities such as sand and dust into the bearing 25 position inside the second mounting member 22 by interference fit between the pile and the second fixing groove 24.

[0072] Embodiments of this application also provide a cleaning robot, including a roller brush mechanism as described in any of the foregoing embodiments. Specifically, the cleaning robot has a mounting housing, and the roller brush mechanism is disposed on the mounting housing. The cleaning robot can perform cleaning work through the roller brush mechanism during use.

[0073] The cleaning robot of this application provides a first blocking member 11 and a second blocking member 12 at both ends of the axial direction of the roller brush body 13. The first blocking member 11 can be interference-fitted with the first fixing groove 23 of the first mounting member 21, and the second blocking member 12 can be interference-fitted with the second fixing groove 24 of the second mounting member 22. This ensures that after the roller brush assembly 1 is installed with the mounting assembly 2, hair, fibers, and other objects can be blocked by the first blocking member 11 and the second blocking member 12, making it difficult for them to enter the interior of the mounting assembly 2. This solves the problem of damage to the robot and safety hazards caused by hair, fibers, and other objects.

[0074] See Figure 1 and Figure 2 In one embodiment, the roller brush mechanism further includes a drive assembly 3, which includes a driver 31. The driver 31 is provided with a drive shaft 32. The drive assembly 3 is detachably mounted on the drive shaft 32 and can rotate with the drive shaft 32 under the drive of the driver 31.

[0075] See Figure 2 and Figure 5To prevent leakage of lubricating oil or other liquids inside the drive 31, and to prevent external contaminants from entering, ensuring the normal operation of the drive 31, an oil seal 28 is also provided on the drive shaft 32 of the drive 31. For details, please refer to... Figures 5-6 The mounting assembly 2 has a cavity hole 26 that mates with the drive shaft 32. An oil seal 28 is disposed within the cavity hole 26, and the outer ring of the oil seal 28 is connected to the inner wall of the cavity hole 26 by an interference fit or fastening to prevent fluid leakage from the contact surface between the oil seal 28 and the cavity hole 26, and to prevent external contaminants from entering from the contact surface between the oil seal 28 and the cavity hole 26. The inner ring of the oil seal 28 is in close contact with the outer surface of the drive shaft 32, forming a sealed interface to prevent fluid leakage from the contact surface between the oil seal 28 and the drive shaft 32, and to prevent external contaminants from entering from the contact surface between the oil seal 28 and the drive shaft 32.

[0076] To maintain the normal liquid level and pressure balance in the cavity hole 26 and avoid insufficient or excessive lubrication due to excessively high or low liquid level, the mounting assembly 2 is also provided with an overflow port 27 that connects the cavity hole 26 to the outside.

[0077] The overflow port 27 has an inner wider and outer narrower structure to utilize the pressure difference, flow velocity change, flow resistance, and inertia of the fluid to help liquids and impurities be discharged more easily and prevent them from flowing back in. Furthermore, in the embodiments of this application, the inlet direction of the overflow port 27 faces the rotation direction of the drive shaft 32, and the angle between the inlet and the rotation direction of the drive shaft 32 is acute. This ensures that the centrifugal force generated when the drive shaft 32 rotates pushes the liquids and impurities towards the inlet of the overflow port 27, and assists in the smooth flow of liquids and impurities along the overflow port.

[0078] Furthermore, in the embodiments of this application, the lower edge of the overflow port 27 is lower than the lower diameter edge of the drive shaft 32 to ensure that the contact position between the drive shaft 32 and the oil seal 28 is not submerged by liquid for a long period of time. It is understood that the main function of the oil seal 28 is to prevent liquid or impurities from seeping in from the outside. If the lower edge of the overflow port 27 is too high, liquid may rise to the area of ​​the oil seal 28, causing the oil seal 28 to come into contact with the liquid, thereby damaging the oil seal material or causing leakage. By designing the overflow port 27 to be lower than the lower diameter edge of the drive shaft 32, excessively high liquid levels can be effectively avoided, ensuring that the oil seal 28 does not come into prolonged contact with the liquid, and extending the service life of the oil seal 28. In addition, the overflow port 27, as a drainage channel, with its lower edge lower than the lower diameter edge of the drive shaft 32, also helps to guide liquid out through the overflow port 27, preventing liquid accumulation from adversely affecting the drive shaft 32 and the oil seal 28, and ensuring the self-cleaning and drainage functions of the roller brush mechanism of this application.

[0079] See Figure 1 , Figure 2 , Figure 3 and Figure 5In one embodiment, the first shielding member 11 includes a first shielding ring 111 and a plurality of first flexible members 112. The first shielding ring 111 is sleeved on one axial end of the roller brush body 13 to shield the opening of the first fixing groove 23, making it difficult for hair, fibers, and other objects to enter the interior of the first mounting member 21 through the first fixing groove 23. In the embodiments of this application, the first shielding ring 111 may be a flange. The first shielding ring 111 and the roller brush body 13 may be formed separately or integrally.

[0080] Several first flexible elements 112 are arranged around one axial end of the roller brush body 13, and the distance between the first shielding ring 111 and the opening of the first fixing groove 23 is greater than the distance between the first flexible element 112 and the opening of the first fixing groove 23. The first shielding ring 111 can block large particles of sand and gravel and other impurities from entering the first mounting component 21, and the first shielding ring 111 and the first mounting component 22 maintain a certain distance to avoid friction between the roller brush body 13 and the first mounting component 21 during the rotation of the roller brush body 13, so as to avoid damage to the first shielding ring 111, the first mounting component 22 and the drive assembly 3 that drives the roller brush body 13 to rotate; the first flexible elements 112 can block small particles of sand and dust and other impurities to prevent or reduce the intrusion of sand and dust and other impurities into the oil seal 28 position inside the first mounting component 21. Since the first flexible component 112 is relatively soft, it will not damage the first mounting component 21 during rotation. Furthermore, the end of each first flexible component 112 that is away from the roller brush body 13 abuts against the first fixing groove 23 to ensure the blocking effect of the first flexible component 112 on impurities such as sand and dust.

[0081] Understandably, the first flexible component 112 is a component with a thin and soft structure. In the embodiments of this application, the first flexible component 112 may be a pile, which is used to prevent or reduce the intrusion of impurities such as sand and dust into the oil seal 28 position inside the first mounting component 21 by interference fit between the pile and the first fixing groove 23.

[0082] To further prevent hair, fibers, and other debris from entering the interior of the mounting component 2, and to address the problem of damage to the roller brush mechanism and safety hazards caused by hair, fibers, and other debris, in this embodiment of the application, a positioning groove 29 is also provided inside the first mounting component. The positioning groove 29 and the first fixing groove 23 are spaced apart along the axial direction of the roller brush body 13, and the positioning groove 29 and the first fixing groove 23 are connected through a through hole. The cross-sectional area of ​​the positioning groove 29 along the axial direction of the roller brush body 13 and the cross-sectional area of ​​the first fixing groove 23 along the axial direction of the roller brush body 13 are both greater than the cross-sectional area of ​​the through hole along the axial direction of the roller brush body 13.

[0083] One part of the drive shaft 32 is located within the positioning groove 29, with a first gap 41 between it and the positioning groove 29. Another part of the drive shaft 32 passes through a through hole and connects to the roller brush assembly 1 located within the first fixing groove 23. The roller brush assembly 1 has a second gap 42 between it and the through hole, and a third gap 43 between it and the first fixing groove 23. The first gap 41, the second gap 42, and the third gap 43 cooperate to form a maze structure 4. By setting multiple complex channels and winding paths in the maze structure 4, the difficulty for hair, fibers, and other objects to enter the mounting assembly 2 is increased. When hair, fibers, and other objects enter the maze structure 4, they will be obstructed by turns, narrowness, and other factors, and will not be able to pass smoothly.

[0084] See Figure 2 and Figure 4 In one embodiment, the second shielding member 12 includes a second shielding ring 121 and a plurality of second flexible members 122. The second shielding ring 121 is sleeved on the other axial end of the roller brush body 13 to shield the opening of the second fixing groove 24, making it difficult for hair, fibers, and other objects to enter the interior of the second mounting member 22 through the second fixing groove 24. In the embodiments of this application, the second shielding ring 121 may be a flange. The second shielding ring 121 and the roller brush body 13 may be formed separately or integrally.

[0085] Several second flexible elements 122 are arranged around one axial end of the roller brush body 13, and the distance between the second shielding ring 121 and the opening of the second fixing groove 24 is greater than the distance between the second flexible elements 122 and the opening of the second fixing groove 24. The second shielding ring 121 can prevent large particles of sand and gravel from entering the second mounting member 22, and the second shielding ring 121 and the second mounting member 22 maintain a certain distance to avoid friction between the second shielding ring 121 and the second mounting member 22 during the rotation of the roller brush body 13, which would damage the second shielding ring 121 and the second mounting member 22. The second flexible elements 122 can block small particles of sand and dust, thereby preventing or reducing the intrusion of sand and dust into the bearing 25 position inside the second mounting member 22. Since the second flexible component 122 is relatively soft, it will not damage the second mounting component 22 during rotation. Furthermore, the end of each second flexible component 122 that is away from the roller brush body 13 abuts against the second fixing groove 24 to ensure the blocking effect of the second flexible component 122 on impurities such as sand and dust.

[0086] Understandably, the second flexible component 122 is a component with a thin and flexible structure. In the embodiments of this application, the second flexible component 122 may be a pile, which is used to prevent or reduce the intrusion of impurities such as sand and dust into the bearing 25 position inside the second mounting member 22 by interference fit between the pile and the second fixing groove 24.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A roller brush mechanism, characterized in that, include: A roller brush assembly includes a roller brush body, a first shielding member and a second shielding member. The first shielding member is disposed around the outer peripheral surface of the roller brush body and is located at one axial end of the roller brush body. The second shielding member is disposed around the outer peripheral surface of the roller brush body and is located at the other axial end of the roller brush body. The mounting assembly includes a first mounting component and a second mounting component. Both the first mounting component and the second mounting component are provided with a fixing groove. The first blocking component and the second blocking component are respectively located in the fixing groove and are interference-fitted with the fixing groove.

2. The roller brush mechanism according to claim 1, characterized in that, At least one of the first shielding member and the second shielding member includes a flexible member, which is disposed around the shaft end of the roller brush body, and the end of each flexible member facing away from the roller brush body abuts against the fixing groove.

3. The roller brush mechanism according to claim 2, characterized in that, At least one of the first shielding member and the second shielding member further includes a shielding ring, which is sleeved on the shaft end of the roller brush body, and the distance between the shielding ring and the opening of the fixing groove is greater than the distance between the flexible member and the opening of the fixing groove.

4. The roller brush mechanism according to claim 3, characterized in that, The flexible component includes a first flexible component and a second flexible component; the fixing groove includes a first fixing groove and a second fixing groove, wherein the first fixing groove is disposed on the first mounting component and the second fixing groove is disposed on the second mounting component; The first shielding member includes a plurality of first flexible members, all of which are arranged around one axial end of the roller brush body, and the end of each first flexible member facing away from the roller brush body abuts against the first fixing groove. The second shielding member includes a plurality of second flexible members, all of which are arranged around the other end of the roller brush body along the axial direction, and the end of each second flexible member facing away from the roller brush body abuts against the second fixing groove.

5. The roller brush mechanism according to claim 4, characterized in that, The shielding ring includes a first shielding ring and a second shielding ring; The first shielding member includes a first shielding ring, which is sleeved on one axial end of the roller brush body, and the distance between the first shielding ring and the opening of the first fixing groove is greater than the distance between the first flexible member and the opening of the first fixing groove. The second shielding member includes a second shielding ring, which is sleeved on the other axial end of the roller brush body, and the distance between the second shielding ring and the opening of the second fixing groove is greater than the distance between the second flexible member and the opening of the second fixing groove.

6. The roller brush mechanism according to claim 5, characterized in that, The roller brush mechanism further includes a drive assembly, which is disposed on the mounting assembly and connected to the roller brush assembly via a drive shaft. The drive assembly is configured to drive the roller brush assembly to rotate about its own axis via the drive shaft.

7. The roller brush mechanism according to claim 6, characterized in that, The first mounting component is also provided with a positioning groove, which is spaced apart from the first fixing groove along the axial direction of the roller brush body, and the positioning groove and the first fixing groove are connected through a through hole. A portion of the drive shaft is located within the positioning groove and has a first gap with the positioning groove. Another portion of the drive shaft passes through the through hole and is connected to the roller brush assembly located within the first fixing groove. The roller brush assembly has a second gap with the through hole and a third gap with the first fixing groove. The first gap, the second gap, and the third gap cooperate to form a labyrinth structure.

8. The roller brush mechanism according to claim 6, characterized in that, The roller brush assembly has an elastic element inside, and one end of the drive shaft is inserted into the roller brush assembly along the axial direction of the roller brush assembly and is interference-fitted with the elastic element.

9. The roller brush mechanism according to claim 6, characterized in that, The drive shaft is provided with an oil seal, the mounting assembly is provided with a cavity hole that mates with the oil seal, and the mounting assembly is provided with an overflow port that is wider inside and narrower outside, the overflow port connecting the cavity hole to the outside.

10. The roller brush mechanism according to claim 9, characterized in that, The inlet direction of the overflow port is oriented toward the rotation direction of the drive shaft, and the angle between the overflow port and the rotation direction of the drive shaft is an acute angle; and / or, the lower edge of the overflow port is lower than the lower edge of the diameter of the drive shaft.

11. A cleaning robot, characterized in that, Includes the roller brush mechanism as described in any one of claims 1-10.

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