Sweeping robot

Abstract

The utility model relates to a kind of sweeping robots, comprising: host computer;Cleaning module, drive assembly and side brush assembly, side brush assembly includes mounting seat and at least two brush arms, mounting seat is rotatably arranged at the bottom of host computer, at least two brush arms are distributed on the outer wall of mounting seat along the circumferential direction of mounting seat, drive assembly is drivenly connected with mounting seat;Baffle, baffle is protrudingly arranged on the bottom wall outside of host computer and located in the rotation range of brush arm, at least one brush arm passes through baffle and is slidably contacted with baffle to make it swing relative to adjacent brush arm.The sweeping robot of the present application, at least one brush arm of side brush assembly will be touched with baffle when being driven to rotate and pass through baffle, so that brush arm is swung close to the brush arm behind in the reverse direction of the rotating direction of side brush assembly under the abutment of baffle, whereby the distance between the brush arm and adjacent brush arm changes, so that hair mass clamped between the two adjacent brush arms is easily separated from side brush assembly.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, and in particular to a sweeping robot. Background Technology

[0002] With the advent of the era of smart cleaning appliances, more and more intelligent cleaning robots, such as robotic vacuum cleaners, have appeared on the market. Existing robotic vacuum cleaners generally use outward-extending side brushes to achieve a larger coverage area and improve cleaning efficiency. While side brushes offer high cleaning efficiency, they are susceptible to getting tangled in hair. To maintain the robot vacuum's high cleaning efficiency, users need to regularly clean and maintain the side brushes, which inevitably affects the user experience. Utility Model Content

[0003] Therefore, it is necessary to provide a new type of robot vacuum cleaner that addresses the risk of hair entanglement in the side brush components of existing robot vacuum cleaners, which requires frequent cleaning and maintenance and impairs the user experience.

[0004] A robotic vacuum cleaner includes: a main unit; a cleaning module, the cleaning module including a drive assembly and a side brush assembly, the side brush assembly including a mounting base and brush arms, the number of brush arms being at least two, the mounting base being rotatably disposed at the bottom of the main unit, the at least two brush arms being disposed on the outer wall of the mounting base and distributed circumferentially at intervals along the mounting base, the drive assembly being drivenly connected to the mounting base to drive the mounting base to rotate at least two brush arms to clean the surface to be cleaned; and a stop block, the stop block being protruded on the outer side of the bottom wall of the main unit and located within the rotation range of the brush arms, at least one brush arm slidingly abutting against the stop block when passing through it to cause it to swing relative to the adjacent brush arm.

[0005] This application provides a robotic vacuum cleaner with a protruding stop on the outer side of the bottom wall of the main unit, within the rotation range of the side brush assembly. When the side brush assembly rotates, at least one brush arm of the side brush assembly will contact the stop as it rotates, causing the brush arm to swing backward in the opposite direction of the side brush assembly's rotation. This changes the distance between the brush arm and its adjacent arms, making it easier for clumps of hair stuck between the two adjacent brush arms to detach from the side brush assembly. Simultaneously, when the stop slides against the brush arm, it can push hair wrapped around the brush arm outward. By adopting this solution, the stop can simultaneously clean the hair on the side brush assembly while it is performing cleaning actions, effectively reducing the risk of hair further entanglement in the mounting base and drive components, reducing maintenance frequency, and improving the user experience.

[0006] In one embodiment, the brush arm includes a connecting arm and bristles. One end of the connecting arm is connected to the mounting base, and the other end is connected to the bristles. The extension direction of the projection of the bristles onto the horizontal plane forms an angle with the radial direction of the rotation axis of the mounting base. When the side brush assembly rotates for cleaning, the brush arm will experience air resistance opposite to the rotation direction of the mounting base. By adopting the above structure, this air resistance can be decomposed into a lateral component extending along the length of the bristles. This counteracts the tendency of hair to move along the bristles towards the mounting base and drive assembly, thereby blocking and retaining the hair in the middle or outer area of ​​the bristles, reducing the risk of entanglement on the motor shaft, and improving the stability and safety of equipment operation.

[0007] In one embodiment, the angle between the length direction of the projection of the bristles on the horizontal plane and the radial direction of the rotation axis of the mounting base is α, where 110°≤α≤140°.

[0008] In one embodiment, the connecting arm is involute-shaped from the side connected to the mounting base to the side connected to the brush bristles. By forming an involute-shaped connecting arm structure, on the one hand, the extension direction of the projection of the elongated brush bristles on the horizontal plane naturally forms an angle with the radial direction of the rotation axis of the mounting base; on the other hand, the projection of the connecting arm on the horizontal plane is curved and extended, thereby hindering the further movement of hair and other debris on the brush, greatly reducing the possibility of debris moving across the connecting arm to the mounting base and drive assembly, and further reducing the risk of entanglement on the motor shaft.

[0009] In one embodiment, the involute curve starts from the outer periphery of the mounting base and points in the opposite direction to the rotation direction of the side brush assembly. With this structure, the side of the brush arm facing away from the mounting base has weaker bending resistance and is more prone to wobbling when it comes into contact with the stop block.

[0010] In one embodiment, the brush arm includes a connecting arm and bristles. When at least one brush arm passes the stop, the stop slides against the end of the brush arm near the mounting base, causing the bristles to oscillate relative to the adjacent brush arm. With this configuration, the end of the brush arm near the mounting base has a small radius of rotation and a low linear velocity, resulting in low momentum and weak impact force upon collision. Simultaneously, its short lever arm minimizes the bending moment generated by the collision, allowing the brush arm root to oscillate without bearing a large torque.

[0011] In one embodiment, one end of the connecting arm is connected to the mounting base, and the other end of the connecting arm is connected to the brush bristles. The connecting arm is elastic, and when at least one brush arm passes the stop, the stop and the connecting arm slide against each other, causing the connecting arm to elastically deform relative to the mounting base and causing the brush bristles to swing relative to the adjacent brush arm. By adopting the above structure, the elastic connecting arm and the stop engage to drive the brush bristles to swing, which avoids the brush bristles from bending directly and being easily worn. At the same time, when the brush arm separates from the stop, the brush arm can quickly return to its normal cleaning state under the elastic restoring force of the connecting arm.

[0012] In one embodiment, one end of the connecting arm is connected to the mounting base, and the other end of the connecting arm is connected to the brush bristles. When at least one brush arm passes the stop, the stop slides against the end of the brush bristles near the connecting arm, causing the brush bristles to swing relative to the adjacent brush arm. With this structure, the brush bristles, under the abutment of the stop, swing towards the brush arm in the opposite direction of rotation of the side brush assembly, making it easier for the hair clump stuck between the two adjacent brush arms to detach from the side brush assembly. Simultaneously, when the stop slides against the brush bristles of the brush arm, it can push the hair wrapped around the brush arm outwards and away from the brush arm.

[0013] In one embodiment, the bristles are inclined downwards away from the connecting arm. By using downwardly inclined bristles, on the one hand, the height of the stop can be reduced when it abuts against the connecting arm or the end of the bristles near the connecting arm, avoiding easy contamination of the stop near the surface to be cleaned. On the other hand, the inclined bristles can better adapt to uneven ground, and when rotating at high speed, they form an angle with the ground. When the bristle tips contact the debris, they can generate a continuous inward thrust, more effectively scooping up the debris and throwing it along the curved surface of the bristles towards the suction port of the sweeping robot, while reducing debris splashing and dust, and avoiding secondary pollution.

[0014] In one embodiment, the bottom wall of the main unit is recessed inward to form a mounting groove. The cross-sectional area of ​​the mounting groove gradually increases towards the opening of the mounting groove. The mounting base and the connecting arm are disposed in the mounting groove, and the stop is located at the opening of the mounting groove. By placing the stop at the opening of the mounting groove, the stop can smoothly abut against the connecting arm or the end of the bristles near the connecting arm, while also further reducing the height of the stop to prevent it from being easily damaged by being close to the surface to be cleaned.

[0015] In one embodiment, the side of the stop block near the mounting base is recessed to form an arc-shaped abutment surface, and at least one of the brush arms slides against the arc-shaped abutment surface when passing the stop block. By adopting the above structure, when the brush arm abuts against the arc-shaped abutment surface, the bristles of the brush arm can swing more effectively to a preset position under the guidance of the arc-shaped abutment surface.

[0016] In one embodiment, the stop is formed with comb teeth, which are used to comb the bristles of the brush arm to remove hair when at least one of the brush arms passes through the stop.

[0017] In one embodiment, the distance between the portion of the brush arm that slides against the stop and the surface to be cleaned is greater than the distance between the bottom wall of the stop and the surface to be cleaned. This ensures that the sidewall of the portion of the brush arm that slides against the stop makes full contact with the sidewall of the stop, resulting in more even force distribution.

[0018] In one embodiment, the number of brush arms is three. By setting three brush arms evenly distributed around the circumference of the mounting base, a larger gap can be provided between two adjacent brush arms while ensuring the cleaning area and cleaning efficiency. On the one hand, this prevents small clumps of hair from getting stuck between two brush arms. On the other hand, when any brush arm abuts against the stop block, it provides more room for its bristles to move, so that the distance between the bristles of that brush arm and the adjacent brush arm can be shortened to a greater extent, making it easier for clumps of hair stuck between two brush arms to detach from the side brush assembly.

[0019] In one embodiment, all the brush arms pass sequentially through the stop and slide against the stop, causing their bristles to oscillate relative to adjacent brush arms. Each brush arm can slide against the stop, making it easier for hair and debris on the brush arm to be removed by the scraping action of the stop. At the same time, the spacing between every two adjacent brush arms will change periodically, effectively reducing the possibility of hair clumps getting stuck between two brush arms.

[0020] In one embodiment, the bottom of the main unit is provided with a suction port, and the stop is located on the side of the side brush assembly near the suction port. With the above structure, when the brush arm rotates to a position close to the suction port, it abuts against the stop, thereby causing the bristles to swing and change the distance between the bristles and the adjacent brush arm. After the hair stuck between them falls off, it can be sucked into the suction port more quickly by greater suction.

[0021] In one embodiment, a retaining key is provided on the outer peripheral wall of the output shaft of the drive assembly, and a rotating shaft hole passing through the output shaft is provided on the mounting base. The inner peripheral wall of the rotating shaft hole is recessed to form a keyway, and the keyway is adapted to the retaining key for installation. When the output shaft of the drive assembly is installed in the rotating shaft hole, the keyway and the retaining key form a limiting fit, so that the output shaft and the mounting base are relatively fixed. This allows the mounting base to rotate with the output shaft, and when the brush arm collides with the stop block and is subjected to a force in the opposite direction to its rotation, it can effectively prevent the mounting base from deflecting relative to the output shaft and causing it to loosen. Attached Figure Description

[0022] Figure 1 A first perspective view of a robotic vacuum cleaner according to one embodiment;

[0023] Figure 2 A second perspective view of a sweeping robot according to one embodiment;

[0024] Figure 3 A bottom view of a robotic vacuum cleaner according to one embodiment;

[0025] Figure 4 for Figure 3 Enlarged view of region A;

[0026] Figure 5 This is a top view of a brush assembly according to one embodiment.

[0027] The correspondence between the reference numerals and the component names is as follows:

[0028] 1 main unit, 101 mounting slot, 102 dust suction port;

[0029] 2 Cleaning module, 201 Rotary shaft hole, 202 Keyway, 21 Drive assembly, 22 Side brush assembly, 221 Mounting base, 222 Brush arm, 2221 Connecting arm, 2222 Brush bristles;

[0030] 3 stops, 31 arc-shaped contact surfaces. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0033] The sweeping robot of the present invention is described below with reference to the accompanying drawings.

[0034] like Figures 1 to 5 As shown, this embodiment discloses a sweeping robot, including: a main unit 1; a cleaning module 2, the cleaning module 2 including a drive component 21 and a side brush component 22, the side brush component 22 including a mounting base 221 and brush arms 222, the number of brush arms 222 being at least two, the mounting base 221 being rotatably disposed at the bottom of the main unit 1, the at least two brush arms 222 being disposed on the outer wall of the mounting base 221 and distributed at intervals along the circumference of the mounting base 221, the drive component 21 being drivenly connected to the mounting base 221 to drive the mounting base 221 to drive the at least two brush arms 222 to rotate to clean the surface to be cleaned; a stop block 3, the stop block 3 being protruded and disposed on the outer side of the bottom wall of the main unit 1 and located within the rotation range of the brush arms 222, at least one brush arm 222 slidingly abutting against the stop block 3 when passing through it so that it swings relative to the adjacent brush arm 222.

[0035] This application provides a robotic vacuum cleaner. By setting a protruding stop 3 on the outer side of the bottom wall of the main unit 1 and within the rotation range of the side brush assembly 22, when the side brush assembly 22 rotates, at least one brush arm 222 of the side brush assembly 22 will contact the stop 3 when it is driven to rotate and passes through the stop 3. Under the abutment of the stop 3, the brush arm 222 swings and approaches the brush arm 222 in the opposite direction of the rotation direction of the side brush assembly 22. As a result, the distance between the brush arm 222 and the adjacent brush arm 222 changes, making it easier for the hair stuck between the two adjacent brush arms 222 to detach from the side brush assembly 22. At the same time, when the stop 3 slides and abuts the brush arm 222, it can push the hair wrapped around the brush arm 222 outward and slide away from the brush arm 222. By adopting the above solution, when the side brush assembly 22 performs the cleaning action, the stop block 3 can simultaneously clean the hair on the side brush assembly 22, thereby effectively reducing the risk of hair further entangled in the mounting base 221 and drive assembly 21, and helping to reduce the maintenance frequency and improve the user experience.

[0036] like Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the brush arm 222 includes a connecting arm 2221 and bristles 2222. One end of the connecting arm 2221 is connected to the mounting base 221, and the other end of the connecting arm 2221 is connected to the bristles 2222. The extension direction of the projection of the bristles 2222 on the horizontal plane forms an angle with the radial direction of the rotation axis of the mounting base 221. When the side brush assembly 22 rotates for cleaning, the brush arm 222 will be subjected to air resistance opposite to the rotation direction of the mounting base 221. By adopting the above structure, the air resistance can be decomposed into a lateral component extending along the length direction of the bristles 2222. This can counteract the tendency of hair to move along the bristles 2222 towards the mounting base 221 and the drive assembly 21, thereby blocking and retaining the hair in the middle or outer end area of ​​the bristles 2222, reducing the risk of entanglement around the motor shaft, and improving the stability and safety of the equipment operation.

[0037] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further defines that the angle between the length direction of the projection of the bristles 2222 on the horizontal plane and the radial direction of the rotation axis of the mounting base 221 is α, 110°≤α≤140°.

[0038] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the connecting arm 2221 is involute-shaped from the side connected to the mounting base 221 to the side connected to the bristles 2222. By forming an involute-shaped connecting arm 2221 structure, on the one hand, the extension direction of the projection of the elongated bristles 2222 on the horizontal plane can naturally form an angle with the radial direction of the rotation axis of the mounting base 221; on the other hand, the projection of the connecting arm 2221 on the horizontal plane is curved and extended, thereby hindering the further movement of hair and other debris on the brush, greatly reducing the possibility of debris moving across the connecting arm 2221 to the mounting base 221 and the drive assembly 21, thereby further reducing the risk of entanglement on the motor shaft.

[0039] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the involute curve starts from the outer periphery of the mounting base 221 and points in the opposite direction to the rotation direction of the side brush assembly 22. By adopting the above structure, the side of the brush arm 222 facing away from the mounting base 221 has weaker bending resistance and is more prone to swinging when the brush arm 222 comes into contact with the stop block 3.

[0040] like Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the brush arm 222 includes a connecting arm 2221 and bristles 2222. When at least one brush arm 222 passes the stop block 3, the stop block 3 slides against the end of the brush arm 222 near the mounting base 221, so that the bristles 2222 swing relative to the adjacent brush arm 222. By adopting the above configuration, the end of the brush arm 222 near the mounting base 221 has a small radius of rotation and a low linear velocity, resulting in small momentum and weak impact force upon collision; at the same time, its short lever arm makes the bending moment generated by the collision very small, and the root of the brush arm 222 does not need to bear a huge torque to swing.

[0041] In addition to the features of the above embodiments, this embodiment further specifies that: one end of the connecting arm 2221 is connected to the mounting base 221, and the other end of the connecting arm 2221 is connected to the brush bristles 2222. The connecting arm 2221 is elastic; for example, the connecting arm 2221 can be made of ABS elastic plastic, and its elastic deformation angle range is 15° to 30°. When at least one brush arm 222 passes the stop block 3, the stop block 3 slides against the connecting arm 2221 to drive the connecting arm 2221 to undergo elastic deformation relative to the mounting base 221, and drive the brush bristles 2222 to swing relative to the adjacent brush arm 222. By adopting the above structure, the elastic connecting arm 2221 abuts against the stop block 3 to drive the brush bristles 2222 to swing, which can avoid the brush bristles 2222 from being directly bent and easily worn. At the same time, when the brush arm 222 separates from the stop block 3, the brush arm 222 can quickly return to normal cleaning state under the elastic restoring force of the connecting arm 2221.

[0042] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: one end of the connecting arm 2221 is connected to the mounting base 221, and the other end of the connecting arm 2221 is connected to the bristles 2222. When at least one brush arm 222 passes the stop block 3, the stop block 3 slides against the end of the bristles 2222 near the connecting arm 2221, so that the bristles 2222 swing relative to the adjacent brush arm 222. By adopting the above structure, the bristles 2222 swing towards the brush arm 222 in the opposite direction of the rotation direction of the side brush assembly 22 under the abutment of the stop block 3, making it easier for the hair clump stuck between the two adjacent brush arms 222 to detach from the side brush assembly 22. At the same time, when the stop block 3 can slide against the bristles 2222 of the brush arm 222, it can push the hair wrapped around the brush arm 222 outward and slide away from the brush arm 222.

[0043] like Figure 2As shown, in addition to the features of the above embodiments, this embodiment further specifies that the bristles 2222 are inclined downwards away from the connecting arm 2221. By using downwardly inclined bristles 2222, on the one hand, when the stop block 3 abuts against the connecting arm 2221 or the end of the bristles 2222 near the connecting arm 2221, the height of the stop block 3 can be reduced, avoiding easy contamination of the stop block 3 near the surface to be cleaned. On the other hand, the inclined bristles 2222 can better adapt to uneven ground, and when rotating at high speed, they form an angle with the ground. When the tip of the bristles 2222 contacts the garbage, it can generate a continuous inward pushing force, more effectively scooping up the garbage and throwing it along the curved surface of the bristles 2222 towards the suction port of the sweeping robot, while reducing garbage splashing and dust, and avoiding secondary pollution.

[0044] like Figures 2 to 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottom wall of the main unit 1 is recessed inward to form a mounting groove 101, the cross-sectional area of ​​the mounting groove 101 gradually increases towards the opening of the mounting groove 101, the mounting base 221 and the connecting arm 2221 are disposed in the mounting groove 101, and the stop block 3 is located at the opening of the mounting groove 101. By disposing the stop block 3 at the opening of the mounting groove 101, the stop block 3 can smoothly abut against the end of the connecting arm 2221 or the bristles 2222 near the connecting arm 2221, while the height of the stop block 3 can be further reduced to prevent the stop block 3 from being easily damaged when close to the surface to be cleaned.

[0045] like Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the side of the stop 3 near the mounting base 221 is recessed to form an arc-shaped abutment surface 31, and at least one brush arm 222 slides against the arc-shaped abutment surface 31 when passing the stop 3. By adopting the above structure, when the brush arm 222 abuts against the arc-shaped abutment surface 31, the bristles 2222 of the brush arm 222 can swing to a preset position better under the guidance of the arc-shaped abutment surface 31.

[0046] In addition to the features of the above embodiments, this embodiment further specifies that: the stop block 3 is formed with comb teeth, and when at least one brush arm 222 passes through the stop block 3, the comb teeth are used to comb the bristles 2222 of the brush arm 222 to remove hair.

[0047] like Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the distance between the part of the brush arm 222 that slides against the stop block 3 and the surface to be cleaned is greater than the distance between the bottom wall of the stop block 3 and the surface to be cleaned. Therefore, the sidewall of the part of the brush arm 222 that slides against the stop block 3 will be in full contact with the sidewall of the stop block 3, resulting in more even force distribution.

[0048] like Figure 3As shown, in addition to the features of the above embodiments, this embodiment further specifies that the number of brush arms 222 is three. By setting three brush arms 222 evenly distributed around the mounting base 221, while ensuring the cleaning area and cleaning efficiency, a larger gap can be provided between two adjacent brush arms 222. On the one hand, this can prevent small hair clumps from getting stuck between two brush arms 222. On the other hand, when any brush arm 222 abuts against the stop block 3, it can provide more room for its bristles 2222 to move, so that the distance between the bristles 2222 of the brush arm 222 and the adjacent brush arm 222 can be shortened to a large extent, making it easier for hair clumps stuck between two brush arms 222 to detach from the side brush assembly 22.

[0049] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: all brush arms 222 sequentially pass through the stop block 3 and slide against the stop block 3, so that their bristles 2222 swing relative to adjacent brush arms 222. Each brush arm 222 can slide against the stop block 3, and the hair and debris on the brush arm 222 will be more easily removed by the scraping of the stop block 3. At the same time, the distance between every two adjacent brush arms 222 will change periodically, which can effectively reduce the possibility of hair clumps getting stuck between two brush arms 222.

[0050] like Figure 2 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the bottom of the main unit 1 is provided with a suction port 102, and the stop block 3 is located on the side of the side brush assembly 22 near the suction port 102. By adopting the above structure, the brush arm 222 will abut against the stop block 3 when it rotates to a position close to the suction port 102, thereby causing its bristles 2222 to swing and change the distance between its bristles 2222 and the adjacent brush arm 222. After the hair clump stuck between them falls off, it can be sucked into the suction port 102 more quickly by greater suction.

[0051] like Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a retaining key is provided on the outer peripheral wall of the output shaft of the drive assembly 21, and a rotating shaft hole 201 passing through the output shaft is provided on the mounting base 221. The inner peripheral wall of the rotating shaft hole 201 is recessed to form a keyway 202, and the keyway 202 is adapted to the retaining key for installation. When the output shaft of the drive assembly 21 is installed with the rotating shaft hole 201, the keyway 202 and the retaining key form a limiting fit, so that the output shaft and the mounting base 221 are relatively fixed. This enables the mounting base 221 to rotate with the output shaft. Furthermore, when the brush arm 222 collides with the stop block 3 and is subjected to a force in the opposite direction to its rotation, it can effectively prevent the mounting base 221 from deflecting relative to the output shaft and causing it to loosen.

[0052] 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.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A robotic vacuum cleaner, characterized in that, include: Host (1); The cleaning module (2) includes a drive assembly (21) and a side brush assembly (22). The side brush assembly (22) includes a mounting base (221) and brush arms (222). The number of brush arms (222) is at least two. The mounting base (221) is rotatably disposed at the bottom of the main unit (1). At least two brush arms (222) are disposed on the outer wall of the mounting base (221) and are distributed at intervals along the circumference of the mounting base (221). The drive assembly (21) is driven to the mounting base (221) to drive the mounting base (221) to rotate at least two brush arms (222) to clean the surface to be cleaned. The stop (3) is protruding on the outside of the bottom wall of the host (1) and located within the rotation range of the brush arm (222). When at least one of the brush arms (222) passes the stop (3), it slides against the stop (3) so that it swings relative to the adjacent brush arm (222).

2. The sweeping robot according to claim 1, characterized in that, The brush arm (222) includes a connecting arm (2221) and bristles (2222). One end of the connecting arm (2221) is connected to the mounting base (221), and the other end of the connecting arm (2221) is connected to the bristles (2222). The extension direction of the projection of the bristles (2222) on the horizontal plane forms an angle with the radial direction of the rotation axis of the mounting base (221).

3. The sweeping robot according to claim 2, characterized in that, The connecting arm (2221) is involute-shaped from the side connected to the mounting base (221) to the side connected to the bristles (2222).

4. The sweeping robot according to claim 3, characterized in that, The involute starts from the outer periphery of the mounting base (221) and points in the opposite direction to the rotation direction of the side brush assembly (22).

5. The sweeping robot according to claim 1, characterized in that, The brush arm (222) includes a connecting arm (2221) and bristles (2222). When at least one of the brush arms (222) passes the stop (3), the stop (3) slides against the end of the brush arm (222) near the mounting base (221) so that the bristles (2222) swing relative to the adjacent brush arm (222).

6. The sweeping robot according to claim 5, characterized in that, One end of the connecting arm (2221) is connected to the mounting base (221), and the other end of the connecting arm (2221) is connected to the bristles (2222). The connecting arm (2221) is elastic. When at least one of the brush arms (222) passes the stop (3), the stop (3) slides against the connecting arm (2221) to drive the connecting arm (2221) to undergo elastic deformation relative to the mounting base (221), and cause the bristles (2222) to swing relative to the adjacent brush arm (222); or One end of the connecting arm (2221) is connected to the mounting base (221), and the other end of the connecting arm (2221) is connected to the bristles (2222). When at least one of the brush arms (222) passes the stop (3), the stop (3) slides against the end of the bristles (2222) near the connecting arm (2221) so that the bristles (2222) swing relative to the adjacent brush arm (222).

7. The sweeping robot according to claim 6, characterized in that, The bristles (2222) are inclined downwards away from the connecting arm (2221).

8. The sweeping robot according to claim 6, characterized in that, The bottom wall of the host (1) is recessed inward to form a mounting groove (101). The cross-sectional area of ​​the mounting groove (101) gradually increases towards the opening of the mounting groove (101). The mounting base (221) and the connecting arm (2221) are disposed in the mounting groove (101). The stop block (3) is located at the opening of the mounting groove (101).

9. The sweeping robot according to claim 1, characterized in that, The stop (3) has a recessed arc-shaped contact surface (31) on the side near the mounting base (221), and at least one of the brush arms (222) slides against the arc-shaped contact surface (31) when passing the stop (3); and / or The stop (3) is formed with comb teeth, and when at least one of the brush arms (222) passes through the stop (3), the comb teeth are used to comb the bristles (2222) of the brush arm (222) to remove hair; and / or The distance between the portion of the brush arm (222) that slides against the stop (3) and the surface to be cleaned is greater than the distance between the bottom wall of the stop (3) and the surface to be cleaned; and / or The number of brush arms (222) is three; and / or All the brush arms (222) pass through the stop (3) in sequence and slide against the stop (3) so that their bristles (2222) swing relative to the adjacent brush arms (222).

10. The sweeping robot according to claim 1, characterized in that, The bottom of the main unit (1) is provided with a dust suction port (102), and the block (3) is located on the side of the side brush assembly (22) near the dust suction port (102).

11. The sweeping robot according to any one of claims 1 to 10, characterized in that, The output shaft of the drive assembly (21) is provided with a key on its outer peripheral wall, and the mounting base (221) is provided with a rotating shaft hole (201) that passes through the output shaft. The inner peripheral wall of the rotating shaft hole (201) is recessed to form a keyway (202), and the keyway (202) is adapted to the key for installation.

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