Cleaning robots

Abstract

This application discloses a cleaning robot. The cleaning robot includes a housing, a cleaning component, a dustbin assembly, and two drive wheel structures. The housing has a front end and a rear end. The cleaning component includes a roller brush and a roller brush drive unit. The roller brush is rotatably disposed at the front end of the housing, and the roller brush drive unit is built into the roller brush for driving the roller brush to rotate. The dustbin assembly is disposed between the front end and the rear end of the housing. The battery is disposed at the rear end of the housing. The two drive wheel structures are disposed on the housing, respectively located on both sides of the dustbin, and positioned between the battery and the roller brush. The technical solution provided by this application can solve the problems of small roller brush size and small cleaning area in the prior art.

Description

Technical Field

[0001] This application relates to the field of cleaning robot technology, and more specifically, to a cleaning robot. Background Technology

[0002] Cleaning robots, also known as robotic vacuum cleaners, are a new generation of household helpers, capable of cleaning up hair, sunflower seed shells, dust, and other indoor debris. With the continuous improvement of living standards in China, robotic vacuum cleaners, originally sold primarily in the European and American markets, are gradually entering ordinary households and gaining wider acceptance. In the near future, robotic vacuum cleaners will become an indispensable cleaning assistant for every family, just like white goods. The products will also evolve from their current basic intelligence to a higher level of automation, gradually replacing manual cleaning. Robotic vacuum cleaners, as a newly emerging intelligent household cleaning device in recent years, are gradually entering and improving people's lifestyles.

[0003] However, existing cleaning robots are limited by their own drive wheels, resulting in small brush sizes and thus small cleaning areas. Summary of the Invention

[0004] This application provides a cleaning robot that can solve the problems of small brush size and small cleaning area in the prior art.

[0005] This invention provides a cleaning robot, comprising:

[0006] The casing has a front end and a rear end;

[0007] The cleaning assembly includes a roller brush and a roller brush drive unit. The roller brush is rotatably disposed at the front end of the housing, and the roller brush drive unit is built into the roller brush for driving the roller brush to rotate.

[0008] The dustbin assembly is located between the front and rear ends of the housing;

[0009] The battery is located at the rear of the casing; and

[0010] The device has two drive wheels, which are located on either side of the dust box and between the battery and the roller brush.

[0011] In the above process, the cleaning robot walks on the ground driven by the drive wheel structure. The roller brush in the cleaning component shakes the dirt on the ground by its own rotation, so that the dirt is quickly removed from the ground and then sucked into the dust box component to complete the cleaning. To improve cleaning performance compared to existing technologies, this technical solution places the roller brush at the front to avoid interference from the drive wheel structure and increases the length of the roller brush, thereby increasing the contact area with the ground and improving cleaning efficiency. Simultaneously, by embedding the roller brush drive unit within the roller brush, the internal space of the cleaning robot is prevented from being occupied by an external drive unit, further increasing the length of the roller brush. Furthermore, the dustbin assembly is placed in the middle, and the battery is placed at the rear and arranged around the dustbin assembly, ensuring a compact internal structure and balanced center of gravity distribution. This prevents the cleaning robot from tilting forward or backward using the drive wheel structure as a fulcrum, ensuring good walking posture and obstacle-crossing ability. For example, with an overall width of 310mm, the cleaning robot provided according to this technical solution can have a roller length of 275mm, which is 105mm longer than the 170mm roller in the prior art, significantly improving cleaning efficiency.

[0012] In an optional embodiment, the roller brush has a hollow structure, and a roller brush shaft is formed inside the roller brush;

[0013] The roller brush drive unit includes a roller brush motor bracket and a roller brush motor;

[0014] The roller brush motor bracket is located on the inner wall of the roller brush and can rotate relative to the roller brush.

[0015] The roller brush motor is fixed on the roller brush motor bracket, and the output shaft of the roller brush motor is connected to the roller brush shaft to drive the roller brush to rotate.

[0016] In the above process, both the roller brush motor bracket and the roller brush motor are located inside the roller brush so as not to affect the external dimensions of the roller brush. When the roller brush motor is working, it will drive the roller brush shaft, i.e., the roller brush, to rotate. Since the roller brush motor bracket rotates relative to the roller brush, the outer casing of the roller brush motor can remain stationary when the roller brush rotates, which is conducive to the circuit layout of the roller brush motor and ensures the normal operation of the roller brush motor.

[0017] In an optional embodiment, the output shaft of the roller brush motor is equipped with a rotating sleeve, which is interference-fitted into the roller brush shaft;

[0018] An anti-rotation block is formed inside the rotating sleeve, and the output shaft is inserted into the rotating sleeve and cooperates with the anti-rotation block.

[0019] In the above process, the output shaft of the roller brush motor is inserted into the rotating sleeve. When the roller brush motor is working, the output shaft abuts against the anti-rotation block, which drives the rotating sleeve to rotate, thereby driving the roller brush shaft to rotate. The output shaft of the roller brush motor drives the roller brush through the rotating sleeve, which can avoid wear of the roller brush by the output shaft of the roller brush motor. After the rotating sleeve has been working for a certain period of time, when it is worn by the output shaft of the roller brush motor, it can be easily removed from the output shaft of the roller brush motor for easy replacement.

[0020] In an optional embodiment, the cleaning assembly further includes a side brush and a side brush drive unit;

[0021] The side brush is located on one side of the roller, and the side brush drive unit is built into the roller brush to drive the side brush to rotate.

[0022] In the process described above, the cleaning robot also includes a side brush, which is used to sweep impurities around the roller brush on the ground into the cleaning range of the roller brush, so that the roller brush can clean the impurities to the dust box assembly, thereby improving cleaning efficiency. Since the size of the roller brush is increased, in order to further integrate the structure of the cleaning robot, the side brush drive unit used to drive the side brush can be integrated into the inside of the roller brush, thereby simplifying the external size of the cleaning robot.

[0023] In an optional embodiment, the side brush drive unit includes a side brush motor bracket, a side brush motor, and a transmission gear set;

[0024] The side brush motor bracket is connected to the roller brush motor bracket and rotates relative to the roller brush.

[0025] The side brush motor is fixed on the side brush motor, and the output shaft of the side brush motor is connected to the transmission gear set, which drives the side brush to rotate.

[0026] In the above process, the side brush motor is fixed inside the roller brush through the side brush motor bracket, and its output shaft transmits power to the side brush located outside the roller brush through the transmission gear set. Since the side brush motor can rotate relative to the roller brush, when the roller brush is working, the side brush motor can transmit power to the side brush in a static, i.e., fixed state inside the roller brush, so that the side brush can work normally.

[0027] In an optional embodiment, one end of the side brush motor bracket is formed with a stepped protrusion, and one end of the roller brush motor bracket engages with the stepped protrusion.

[0028] The wall of the roller brush motor bracket has a positioning groove, and the wall of the side brush motor bracket has a positioning block, which is embedded in the positioning groove.

[0029] In the above process, the side brush motor bracket and the roller brush motor bracket are engaged by the stepped protrusions, so that the side brush motor bracket and the roller brush motor bracket achieve coaxial stability in the radial direction; at the same time, due to the cooperation of the limiting groove and the limiting block, it can be ensured that the side brush motor bracket and the roller brush motor bracket will not rotate relative to each other; thus avoiding mutual interference between the side brush motor and the roller brush motor during operation, which could cause the side brush motor bracket and the roller brush motor bracket to loosen.

[0030] In an optional embodiment, the cleaning component includes an upper cover and a lower cover, which are closed to each other, and the cleaning component is located at the front end of the housing through the upper cover.

[0031] The roller brush is rotatably disposed between the upper cover and the lower cover, with the roller brush exposed in the cleaning opening of the lower cover;

[0032] The side brush is rotatably mounted on the lower cover.

[0033] In the above process, the cleaning components are integrated and unified through the upper and lower covers, which facilitates the assembly or disassembly of the cleaning components to the housing, and facilitates maintenance and replacement. At the same time, the roller brush rotates between the upper and lower covers, which can avoid wear on the housing caused by the rotation of the roller brush and help to improve the service life of the cleaning robot. Meanwhile, the side brush is set in the lower cover, which can effectively separate it from the roller brush and avoid mutual interference when the two rotate.

[0034] In an optional implementation, the two ends of the roller brush are open, forming a first open end and a second open end;

[0035] The roller brush is equipped with a first end cap, a second end cap, a first bearing, a second bearing, and a knurled shaft. The first end cap and the second end cap are respectively fastened to the first open end and the second open end.

[0036] One end of the knurling shaft is fixed to the brush shaft, and the other end passes through the first end cap and is connected to the inner ring of the first bearing. The outer ring of the first bearing is fixed between the upper and lower covers.

[0037] The second bearing is embedded in the second end cap, and the inner ring of the second bearing is placed on the side brush motor bracket.

[0038] In the above process, opening the first end cover and the second end cover allows both ends of the roller brush to be open, which facilitates the assembly of the roller brush motor bracket, roller brush motor, side brush motor bracket, side brush motor, and roller brush shaft, etc., reducing the difficulty of assembly and improving production efficiency. At the same time, through the cooperation between the first bearing, the second bearing, the first end cover, and the second end cover, the roller brush can rotate between the upper cover and the lower cover, and the wear of the upper cover and the lower cover caused by the rotation of the roller brush is reduced.

[0039] In an optional embodiment, the lower cover is formed with a gear mounting groove, and a gear cover is disposed thereon, the gear cover covering the gear mounting groove and together forming a gear through hole;

[0040] The transmission gear set includes a primary gear and a secondary gear;

[0041] The primary gear is connected to the output shaft of the side brush motor and extends through the gear hole into the gear mounting slot;

[0042] The secondary gear is located in the gear mounting slot. One end of the secondary gear shaft is rotatably connected to the gear cover, and the other end of the secondary gear shaft passes through the lower cover and is connected to the side brush.

[0043] The first-stage gear meshes with the second-stage gear to drive the shaft of the second-stage gear to rotate.

[0044] In the above implementation process, the specific relationship between the transmission gear set, the lower cover and the side brush is provided. By setting the gear mounting groove and the gear cover, it can be ensured that the transmission gear assembly can stably transmit the power of the side brush motor to the side brush, ensuring the normal operation of the side brush. At the same time, since the secondary gear is located inside the lower cover, it will not affect the external dimensions of the cleaning robot.

[0045] In an optional embodiment, the surface of the roller brush is provided with a velvet cloth.

[0046] In the process described above, by placing a soft cloth on the surface of the roller brush, the dirt on the ground can be effectively agitated when the roller brush rotates at high speed, thus achieving efficient cleaning. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a top view of the cleaning robot in this embodiment;

[0049] Figure 2 This is a bottom view of the cleaning robot in this embodiment;

[0050] Figure 3 This is a schematic diagram of the internal structure of the cleaning robot in this embodiment;

[0051] Figure 4 and Figure 5 The cleaning component in this embodiment is shown in two perspective views.

[0052] Figure 6 This is a top view of the cleaning component in this embodiment;

[0053] Figure 7 for Figure 6 Sectional view of AA;

[0054] Figure 8 This is a cross-sectional view of the roller brush in this embodiment;

[0055] Figure 9 This is an assembly diagram of the side brush motor bracket and the roller brush motor bracket in this embodiment;

[0056] Figure 10 for Figure 7 A magnified view of point X.

[0057] Icons: 10-Housing; 11-Cleaning Components; 12-Dustbin Components; 13-Battery; 14-Drive Wheel Structure; 15-Roller Brush; 16-Roller Brush Shaft; 17-Roller Brush Motor Bracket; 18-Roller Brush Motor; 19-Rotating Sleeve; 20-Side Brush; 21-Side Brush Motor Bracket; 22-Side Brush Motor; 23-Transmission Gear Set; 24-Step Protrusion; 25-Positioning Groove; 26-Positioning Block; 27-Top Cover; 28-Lower Cover; 29-Sweeping Opening; 30-First End Cover; 31-Second End Cover; 32-First Bearing; 33-Second Bearing; 34-Knurled Shaft; 35-Gear Mounting Groove; 36-Gear Cover; 37-Gear Through Hole; 38-First Stage Gear; 39-Second Stage Gear; 40-Flannel Cloth. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0060] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0061] In the description of the embodiments of this application, it should be understood that the terms "center", "upper", "lower", "first", "second", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0064] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0065] This embodiment provides a cleaning robot that can solve the problem of small size and small cleaning area of ​​the roller brush 15 in the prior art.

[0066] Please see Figures 1-3 , Figure 1 This is a top view of the cleaning robot in this embodiment. Figure 2 This is a bottom view of the cleaning robot in this embodiment. Figure 3 This is a schematic diagram of the internal structure of the cleaning robot in this embodiment.

[0067] The cleaning robot includes a housing 10, a cleaning component 11, a dustbin component 12, a battery 13, and two drive wheel structures 14.

[0068] The casing 10 has a front end and a rear end. Figure 1 The front-end and back-end are marked with arrows for easy distinction.

[0069] The cleaning assembly 11 includes a roller brush 15 and a roller brush 15 drive unit. The roller brush 15 is rotatably disposed at the front end of the housing 10, and the roller brush 15 drive unit is built into the roller brush 15 for driving the roller brush 15 to rotate. It should be noted that the cleaning assembly 11 will be described in detail below.

[0070] The dust box assembly 12 is located between the front and rear ends of the housing 10.

[0071] Battery 13 is located at the rear end of housing 10. See Figure 3 In this disclosure, the outer contour of the dust box in the dust box assembly 12 is circular, and the outer contour of the battery 13 is arc-shaped and arranged around the outer contour of the dust box assembly 12, opposite to the cleaning assembly 11, so that the center of gravity of the sweeper is close to the center of the sweeper.

[0072] Two drive wheel structures 14 are located on the housing 10, on either side of the dust box, and between the battery 13 and the roller brush 15. (See...) Figure 2 It can be seen that the drive wheel structure 14 and the cleaning component 11 have a certain distance between them, and they will not interfere with each other.

[0073] In the above process, the cleaning robot walks on the ground driven by the drive wheel structure 14. The roller brush 15 in the cleaning component 11 beats the dirt on the ground by its own rotation, so that the dirt is quickly removed from the ground and then adsorbed into the dust box component 12 by the working of the dust box component 12 to complete the cleaning. To improve cleaning performance, compared to existing technologies, this technical solution places the roller brush 15 at the front to avoid interference from the drive wheel structure 14, increasing the length of the roller brush 15 and thus increasing the contact area with the ground, thereby increasing cleaning efficiency. Simultaneously, the drive unit of the roller brush 15 is built into the roller brush 15 to prevent the external drive unit from occupying the internal space of the cleaning robot, further increasing the length of the roller brush 15. Furthermore, the dust box assembly 12 is placed in the middle, and the battery 13 is placed at the rear and arranged around the dust box assembly 12, ensuring a compact internal structure for the cleaning robot and balancing its center of gravity. This prevents the cleaning robot from tilting forward or backward using the drive wheel structure 14 as a fulcrum, ensuring good walking posture and obstacle-crossing ability. For example, with an overall width of 310mm, the cleaning robot provided according to this technical solution can have a roller length of 275mm, which is 105mm longer than the 170mm roller in the prior art, greatly improving cleaning efficiency.

[0074] Please see Figures 4-8 , Figure 4 and Figure 5 The following are perspective views of the cleaning component 11 in this embodiment from two different perspectives. Figure 6 This is a top view of the cleaning component 11 in this embodiment. Figure 7 for Figure 6 Sectional view of AA, Figure 8 This is a cross-sectional view of the roller brush 15 in this embodiment.

[0075] In this disclosure, the roller brush 15 has a hollow structure, and a roller brush shaft 16 is formed inside the roller brush 15.

[0076] The drive unit of the roller brush 15 includes a roller brush motor bracket 17 and a roller brush motor 18.

[0077] The roller brush motor bracket 17 is located on the inner wall of the roller brush 15 and can rotate relative to the roller brush 15.

[0078] The roller brush motor 18 is fixed on the roller brush motor bracket 17, and the output shaft of the roller brush motor 18 is connected to the roller brush shaft 16 to drive the roller brush 15 to rotate.

[0079] In the above implementation process, both the roller brush motor bracket 17 and the roller brush motor 18 are located inside the roller brush 15 so as not to affect the external dimensions of the roller brush 15. When the roller brush motor 18 is working, it will drive the roller brush shaft 16, i.e. the roller brush 15, to rotate. Since the roller brush motor bracket 17 rotates relative to the roller brush 15, the outer casing of the roller brush motor 18 can remain stationary when the roller brush 15 rotates, which is conducive to the circuit layout of the roller brush motor 18 and ensures the normal operation of the roller brush motor 18.

[0080] In this disclosure, the output shaft of the roller brush motor 18 is equipped with a rotating sleeve 19, which is interference-fitted into the roller brush shaft 16.

[0081] An anti-rotation block (not shown in the figure) is formed inside the rotating sleeve 19, and the output shaft is inserted into the rotating sleeve 19 and cooperates with the anti-rotation block.

[0082] The output shaft of the roller brush motor 18 and the anti-rotation block are in planar contact, which allows the torque of the roller brush motor 18 to be smoothly transmitted to the rotating sleeve 19.

[0083] In the above process, the output shaft of the roller brush motor 18 is inserted into the rotating sleeve 19. When the roller brush motor 18 is working, the output shaft abuts against the anti-rotation block, which drives the rotating sleeve 19 to rotate, thereby driving the roller brush shaft 16 to rotate. The output shaft of the roller brush motor 18 drives the roller brush 15 through the rotating sleeve 19, which can avoid the output shaft of the roller brush motor 18 from wearing the roller brush 15. After the rotating sleeve 19 has been working for a certain period of time, when it is worn by the output shaft of the roller brush motor 18, it can be easily removed from the output shaft of the roller brush motor 18 for easy replacement.

[0084] In this disclosure, the cleaning component 11 also includes a side brush 20 and a drive unit for the side brush 20.

[0085] The side brush 20 is located on one side of the roller, and the drive unit of the side brush 20 is built into the roller brush 15 to drive the side brush 20 to rotate.

[0086] In the above-mentioned process, the cleaning robot also includes a side brush 20, which is used to sweep the impurities around the roller brush 15 on the ground into the cleaning range of the roller brush 15, so that the roller brush 15 cleans the impurities to the dust box assembly 12, thereby improving cleaning efficiency. Since the size of the roller brush 15 is increased, in order to further integrate the structure of the cleaning robot, the drive unit of the side brush 20 used to drive the side brush 20 can be integrated into the inside of the roller brush 15, thereby simplifying the external size of the cleaning robot.

[0087] The side brush 20 drive unit includes a side brush motor bracket 21, a side brush motor 22, and a transmission gear set 23.

[0088] The side brush motor bracket 21 is connected to the roller brush motor bracket 17 and rotates relative to the roller brush 15.

[0089] The side brush motor 22 is fixed on the side brush motor 22. The output shaft of the side brush motor 22 is connected to the transmission gear set 23, and the side brush 20 is driven to rotate through the transmission gear set 23.

[0090] In the above process, the side brush motor 22 is fixedly installed inside the roller brush 15 through the side brush motor bracket 21, and its output shaft transmits power to the side brush 20 located outside the roller brush 15 through the transmission gear set 23. Since the side brush motor 22 can rotate relative to the roller brush 15, when the roller brush 15 is working, the side brush motor 22 can transmit power to the side brush 20 in a static, i.e. fixed state inside the roller brush 15, so that the side brush 20 can work normally.

[0091] Combination Figure 9 , Figure 9 This is an assembly diagram of the side brush motor bracket 21 and the roller brush motor bracket 17 in this embodiment.

[0092] One end of the side brush motor bracket 21 has a stepped protrusion 24, and one end of the roller brush motor bracket 17 engages with the stepped protrusion 24. The wall of the roller brush motor bracket 17 has a positioning groove 25, and the wall of the side brush motor bracket 21 has a positioning block 26, which is embedded in the positioning groove 25.

[0093] In the above process, the side brush motor bracket 21 and the roller brush motor bracket 17 are engaged by the stepped protrusion 24, so that the side brush motor bracket 21 and the roller brush motor bracket 17 achieve coaxial stability in the radial direction; at the same time, due to the mutual cooperation of the limiting groove and the limiting block, it can be ensured that the side brush motor bracket 21 and the roller brush motor bracket 17 will not rotate relative to each other; thus avoiding mutual interference between the side brush motor 22 and the roller brush motor 18 during operation, which would cause the side brush motor bracket 21 and the roller brush motor bracket 17 to loosen.

[0094] See again Figures 4-7The cleaning assembly 11 includes an upper cover 27 and a lower cover 28, which are closed to each other. The cleaning assembly 11 is located at the front end of the housing 10 via the upper cover 27. A roller brush 15 is rotatably disposed between the upper cover 27 and the lower cover 28, and the roller brush 15 is exposed in the cleaning opening 29 of the lower cover 28. A side brush 20 is rotatably disposed on the lower cover 28.

[0095] In the above process, the cleaning component 11 is integrated and unified through the upper cover 27 and the lower cover 28, which facilitates the assembly or disassembly of the cleaning component 11 to the housing 10, and facilitates maintenance and replacement. At the same time, the roller brush 15 rotates between the upper cover 27 and the lower cover 28, which can avoid wear caused by the rotation of the roller brush 15 to the housing 10, and help to improve the service life of the cleaning robot. Meanwhile, the side brush 20 is set in the lower cover 28, which can effectively separate it from the roller brush 15 and avoid mutual interference when the two rotate.

[0096] In this disclosure, the two ends of the roller brush 15 are open, forming a first open end and a second open end.

[0097] The roller brush 15 is equipped with a first end cap 30, a second end cap 31, a first bearing 32, a second bearing 33, and a knurled shaft 34. The first end cap 30 and the second end cap 31 are respectively fastened to the first open end and the second open end. One end of the knurled shaft 34 is fixed to the roller brush shaft 16, and the other end passes through the end of the first end cap 30 and connects to the inner ring of the first bearing 32. The outer ring of the first bearing 32 is fixed between the upper cover 27 and the lower cover 28. The second bearing 33 is embedded in the second end cap 31, and the inner ring of the second bearing 33 is fitted onto the side brush motor bracket 21.

[0098] In the above process, opening the first end cover 30 and the second end cover 31 allows both ends of the roller brush 15 to be open, which facilitates the assembly of the roller brush motor bracket 17, roller brush motor 18, side brush motor bracket 21, side brush motor 22, and roller brush shaft 16, etc., which can reduce the difficulty of assembly and improve production efficiency. At the same time, through the mutual cooperation between the first bearing 32, the second bearing 33, the first end cover 30 and the second end cover 31, the roller brush 15 can be rotated between the upper cover 27 and the lower cover 28, and the wear of the upper cover 27 and the lower cover 28 caused by the rotation of the roller brush 15 can be reduced.

[0099] See Figure 10 , Figure 10 for Figure 7 A magnified view of point X.

[0100] In this disclosure, the lower cover 28 has a gear mounting groove 35 and a gear cover 36 is disposed thereon. The gear cover 36 covers the gear mounting groove 35 and together they form a gear through hole 37.

[0101] The transmission gear set 23 includes a primary gear 38 and a secondary gear 39. The primary gear 38 is connected to the output shaft of the side brush motor 22 and extends through the gear through hole 37 into the gear mounting groove 35. The secondary gear 39 is located in the gear mounting groove 35. One end of the shaft of the secondary gear 39 is rotatably connected to the gear cover 36, and the other end of the shaft of the secondary gear 39 passes through the lower cover 28 and is connected to the side brush 20. The primary gear 38 meshes with the secondary gear 39 to drive the shaft of the secondary gear 39 to rotate.

[0102] In the above implementation process, the specific relationship between the transmission gear set 23, the lower cover 28 and the side brush 20 is provided. By setting the gear mounting groove 35 and the gear cover 36, it can be ensured that the transmission gear set 23 stably transmits the power of the side brush motor 22 to the side brush 20, ensuring the normal operation of the side brush 20. At the same time, since the secondary gear 39 is located inside the lower cover 28, it will not affect the external dimensions of the cleaning robot.

[0103] In this disclosure, the surface of the roller brush 15 is provided with a velvet cloth 40.

[0104] In the process described above, by setting a cloth 40 on the surface of the roller brush 15, the dirt on the ground can be effectively agitated when the roller brush 15 rotates at high speed, thus achieving efficient cleaning.

[0105] It should be noted that, in Figure 2 The edge brush 20 is not shown in the text, which is interpreted as being in... Figure 2 In the cleaning robot shown, the side brush 20 is omitted, and only the roller brush 15 is provided in its cleaning component 11. After understanding the specific technical solution of the roller brush motor 18 and the side brush motor 22 being located inside the roller brush 15, those skilled in the art can deduce the specific technical solution of the roller brush motor 18 being located inside the roller brush 15 after the side brush motor 22 is omitted.

[0106] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cleaning robot, characterized in that, include: The casing has a front end and a rear end; A cleaning assembly includes a roller brush, a roller brush drive unit, a side brush, and a side brush drive unit. The roller brush is rotatably mounted at the front end of the housing. The roller brush drive unit is built into the roller brush and drives the roller brush to rotate. The roller brush has a hollow structure, and a roller brush shaft is formed inside the roller brush. The roller brush drive unit includes a roller brush motor bracket and a roller brush motor. The roller brush motor bracket is located on the inner wall of the roller brush and can rotate relative to the roller brush. The roller brush motor is fixed on the roller brush motor bracket, and the output shaft of the roller brush motor is connected to the roller brush shaft to drive the roller brush to rotate. A side brush is located on one side of the roller brush. The side brush drive unit is built into the roller brush and drives the side brush to rotate. The side brush drive unit includes a side brush motor bracket, a side brush motor, and a transmission gear set. The side brush motor bracket is connected to the roller brush motor bracket and rotates relative to the roller brush. The side brush motor is fixed on the side brush motor bracket, and the output shaft of the side brush motor is connected to the transmission gear set, which drives the side brush to rotate. The dust box assembly is located between the front and rear ends of the housing; The battery is located at the rear end of the housing; as well as Two drive wheel structures are disposed on the housing, with the two drive wheel structures located on both sides of the dust box assembly and positioned between the battery and the roller brush.

2. The cleaning robot according to claim 1, characterized in that, The output shaft of the roller brush motor is equipped with a rotating sleeve, which is interference-fitted into the roller brush shaft. An anti-rotation block is formed inside the rotating sleeve, and the output shaft is inserted into the rotating sleeve and cooperates with the anti-rotation block.

3. The cleaning robot according to claim 1, characterized in that, One end of the side brush motor bracket has a stepped protrusion, and one end of the roller brush motor bracket engages with the stepped protrusion. The wall surface of the roller brush motor bracket is formed with a positioning groove, and the wall surface of the side brush motor bracket is formed with a positioning block, which is embedded in the positioning groove.

4. The cleaning robot according to claim 1, characterized in that, The cleaning component includes an upper cover and a lower cover, which are closed to each other. The cleaning component is located at the front end of the housing via the upper cover. The roller brush is rotatably disposed between the upper cover and the lower cover, and the roller brush is exposed in the cleaning opening of the lower cover; The side brush is rotatably mounted on the lower cover.

5. The cleaning robot according to claim 4, characterized in that, The roller brush has open ends, forming a first open end and a second open end; The roller brush is equipped with a first end cap, a second end cap, a first bearing, a second bearing, and a knurled shaft. The first end cap and the second end cap are respectively fastened to the first open end and the second open end. One end of the knurling shaft is fixed to the brush shaft, and the other end passes through the first end cap and is connected to the inner ring of the first bearing. The outer ring of the first bearing is fixed between the upper cover and the lower cover. The second bearing is embedded in the second end cap, and the inner ring of the second bearing is placed on the side brush motor bracket.

6. The cleaning robot according to claim 4, characterized in that, The lower cover has a gear mounting groove and is equipped with a gear cover, which covers the gear mounting groove and together forms a gear through hole. The transmission gear set includes a primary gear and a secondary gear; The primary gear is connected to the output shaft of the side brush motor and extends through the gear through hole into the gear mounting slot; The secondary gear is located in the gear mounting slot. One end of the shaft of the secondary gear is rotatably connected to the gear cover, and the other end of the shaft of the secondary gear passes through the lower cover and is connected to the side brush. The primary gear meshes with the secondary gear to drive the shaft of the secondary gear to rotate.

7. The cleaning robot according to any one of claims 1-6, characterized in that, The surface of the roller brush is covered with a felt cloth.

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