Edge brush assembly and cleaning robot

Abstract

The utility model discloses a kind of side brush assembly and cleaning robot, it is related to intelligent household cleaning equipment technical field, wherein, side brush assembly includes installation part and at least one along the circumferential interval of installation part Cleaned department, cleaned department includes first connecting section, second connecting section and brush section, first connecting section one end connects installation part, the other end is connected with second connecting section, brush section is connected in the free end of second connecting section, and extend along the direction of being away from first connecting section.The utility model provides the technical scheme of the one end of second connecting section and first connecting section away from installation part is connected, reduce the entanglement phenomenon of hair between adjacent side brush, to improve the cleaning efficiency and performance of cleaning robot.

Description

Technical Field

[0001] This utility model relates to the field of smart home cleaning equipment technology, and in particular to a side brush component and a cleaning robot. Background Technology

[0002] Cleaning robots, as smart home cleaning devices, are widely used in daily life. Side brushes are one of their key cleaning components, primarily used to clean dust and debris from hard-to-reach areas such as walls, corners, and under furniture. However, in actual use, hair (such as pet hair and human hair) is a common type of debris. When the side brushes rotate at high speed, hair easily becomes entangled between adjacent brushes. This not only reduces the brush rotation speed, affecting cleaning effectiveness and accelerating brush wear, but also increases the load on the drive motor. Prolonged operation may lead to motor overheating, thus affecting the device's performance. Utility Model Content

[0003] The main purpose of this invention is to provide a side brush assembly and a cleaning robot, which aims to reduce the entanglement of hair between adjacent side brushes, thereby improving the cleaning efficiency and performance of the cleaning robot.

[0004] To achieve the above objectives, the present invention proposes a side brush assembly, which includes a mounting portion and at least one cleaning portion arranged circumferentially along the mounting portion. The cleaning portion includes a first connecting segment, a second connecting segment, and a brush segment. One end of the first connecting segment is connected to the mounting portion, and the other end intersects and connects with the second connecting segment. The brush segment is connected to the free end of the second connecting segment and extends in a direction away from the first connecting segment.

[0005] In one embodiment, the included angle between the first connecting segment and the second connecting segment is θ, where θ satisfies: 80°≤θ≤100°.

[0006] In one embodiment, the second connecting segment is curved along its extension direction, and the height of the free end of the second connecting segment in the axial direction of the mounting portion is lower than the height of its connection end with the first connecting segment.

[0007] In one embodiment, at the free end of the second connecting segment, the side of the segment furthest from the mounting portion is at a higher height in the axial direction of the mounting portion than the side closest to the mounting portion.

[0008] In one embodiment, the end of the first connecting segment that connects to the mounting portion is higher than the other end of the first connecting segment that connects to the second connecting segment.

[0009] In one embodiment, the cross-sectional area of ​​the first connecting segment at the end connected to the mounting portion is larger than its cross-sectional area at the other end connected to the second connecting segment.

[0010] In one embodiment, the straight-line distance between the second connecting segment and its connecting end to the first connecting segment and its free end is not less than the straight-line distance between the first connecting segment and its connecting end to the mounting portion and its connecting end to the second connecting segment.

[0011] In one embodiment, the mounting portion, the first connecting segment, and the second connecting segment are formed as a single unit.

[0012] In one embodiment, in the projection of the side brush assembly along the axial direction of the mounting portion, the angle between the central axis of the projection of the first connecting segment and the tangent of the outline of the mounting portion at the intersection point is α, where α satisfies: 80°≤α≤100°.

[0013] In one embodiment, the brush segment includes a hard brush layer, a soft brush layer, and an electrostatic adsorption layer, wherein the hard brush layer is disposed on the outer periphery of the soft brush layer, and the soft brush layer is disposed between the hard brush layer and the electrostatic adsorption layer.

[0014] This utility model also proposes a cleaning robot, comprising:

[0015] Organism;

[0016] Rollers mounted on the machine body;

[0017] A dust collection assembly disposed within the body of the machine body, the dust collection assembly having a dust suction port formed at the bottom of the body, the dust collection assembly including a roller brush rotatably disposed within the dust suction port; and

[0018] The aforementioned side brush assembly is disposed at the bottom of the body and located on one side of the suction port. The mounting part is rotatably connected to the body, so that the cleaning part can rotate with the mounting part to sweep the debris into the suction port.

[0019] The technical solution of this utility model connects the second connecting section to the end of the first connecting section away from the mounting part, and the brush section is connected to the second connecting section and is arranged in an offset extension relative to the mounting part, which effectively increases the spatial distance between adjacent brush sections. At the same time, during high-speed operation, the hair rotates together with the brush section in an almost perpendicular posture and is almost parallel to the brush section of the adjacent cleaning part, thereby reducing the risk of hair getting tangled between adjacent cleaning parts, reducing the problem of speed drop and motor load increase caused by hair tangling, helping to extend the service life of the motor, and improving the stability and energy efficiency of the whole machine operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the cleaning robot provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment of the side brush assembly provided by this utility model;

[0023] Figure 3 for Figure 2 A structural diagram of the brush component from another perspective;

[0024] Figure 4 for Figure 2 A top view of the brush component in the image;

[0025] Figure 5 for Figure 2 A partial top view of the brush component in the image;

[0026] Figure 6 for Figure 2 A cross-sectional view of the brush section.

[0027] Explanation of icon numbers:

[0028] 10. Side brush assembly; 100. Mounting section; 200. Cleaning section; 210. First connecting section; 220. Second connecting section; 230. Brush section; 231. Hard brush layer; 232. Soft brush layer; 233. Electrostatic adsorption layer; 20. Body; 30. Roller; 40. Vacuuming assembly; 41. Vacuum port; 42. Roller brush.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a side brush component.

[0034] Please see Figures 1 to 5 In one embodiment of the present invention, the side brush assembly 10 includes a mounting portion 100 and at least one cleaning portion 200 arranged circumferentially along the mounting portion 100. The cleaning portion 200 includes a first connecting segment 210, a second connecting segment 220 and a brush segment 230. One end of the first connecting segment 210 is connected to the mounting portion 100, and the other end is intersected and connected to the second connecting segment 220. The brush segment 230 is connected to the free end of the second connecting segment 220 and extends in a direction away from the first connecting segment 210.

[0035] Specifically, the side brush assembly 10 includes a mounting portion 100 and at least one cleaning portion 200 spaced circumferentially along the mounting portion 100. Each cleaning portion 200 includes a first connecting section 210, a second connecting section 220, and a brush section 230. A single cleaning portion 200 can be provided to achieve unilateral cleaning; two cleaning portions 200 can be arranged opposite each other, or the included angle between the centers of two cleaning portions 200 can be greater than 90° and less than 150°, preferably 120°; or three or more cleaning portions 200 can be distributed circumferentially along the mounting portion 100 to improve cleaning coverage, enhance debris guiding ability, improve dynamic balance performance during rotation, and reduce vibration. The mounting portion 100 is used to connect to the output shaft of the side brush motor of the cleaning robot to provide power input, enabling the entire side brush assembly 10 to rotate at high speed. The multiple cleaning portions 200 distributed circumferentially along the mounting portion 100 ensure that dust and debris can be continuously and effectively swept towards the robot's suction port 41 during rotation. One end of the first connecting segment 210 is fixed to the mounting part 100, and the other end is connected to the second connecting segment 220. The brush segment 230 is connected to the free end of the second connecting segment 220 and extends in a direction away from the first connecting segment 210. The brush segment 230 is responsible for contacting the cleaning surface and cleaning up the garbage.

[0036] The design of the second connecting section 220 intersecting with the first connecting section 210 causes the brush section 230 connected to the second connecting section 220 to no longer extend radially along the mounting part 100, but instead undergoes lateral offset and angular rotation relative to the mounting part 100 in space. During operation, the brush section 230 is in an outward-extending state, enabling it to reach deep into areas such as walls and corners for cleaning. When the cleaning robot is working, the side brush motor drives the side brush assembly 10 to rotate at high speed, and multiple cleaning parts 200 work together to concentrate dust, particles, hair, and other debris on the ground towards the cleaning robot's suction port 41. When encountering soft debris such as hair, the hair is swept up and carried by the brush section 230. Due to the centrifugal force of rotation and the direction of the brush bristles, the hair tends to be perpendicular to the extension direction of the brush section 230 during its movement. The hair on the cleaning section 200 is approximately parallel to the brush segments 230 of adjacent cleaning sections 200, reducing the possibility of hair bridging and tangling between multiple brush segments 230. This effectively prevents hair from contacting and tangling between adjacent cleaning sections 200, thus preventing hair from gradually accumulating, twisting, and further entangled on the mounting part 100 of the side brush assembly 10 or the motor shaft. The additional resistance experienced by the side brush assembly 10 during operation is reduced, thereby avoiding problems such as decreased speed, motor overload, or even component damage, improving the cleaning efficiency and performance of the cleaning robot. At the same time, the hair that is lifted and directionally guided is immediately sucked into the dust box by a powerful airflow when it moves with the side brush to the vicinity of the suction port 41, achieving rapid removal and further reducing the time window for hair retention and tangling.

[0037] In addition, the side brush assembly 10 can achieve all-around cleaning. When cleaning the corner, one set of cleaning sections 200 can be perpendicular to the wall to sweep out dust, hair and other debris from the corner crevices, while the other cleaning sections 200 are responsible for gathering the swept debris towards the suction port 41, thereby achieving the cleaning of the corner.

[0038] The technical solution of this utility model connects the second connecting section 220 to the end of the first connecting section 210 away from the mounting part 100, and the brush section 230 is connected to the second connecting section 220 and is arranged in an offset extension relative to the mounting part 100. This effectively increases the spatial distance between adjacent brush sections 230. At the same time, during high-speed operation, the hair rotates together with the brush section 230 in an attitude that is approximately perpendicular to it and is approximately parallel to the brush section 230 of the adjacent cleaning part 200. This reduces the risk of hair getting tangled between adjacent cleaning parts 200, reduces the problem of speed reduction and motor load increase caused by hair tangling, helps to extend the service life of the motor, and improves the stability and energy efficiency of the whole machine operation.

[0039] In one implementation, please refer to Figure 5 The included angle between the first connecting segment 210 and the second connecting segment 220 is θ, and θ satisfies: 80°≤θ≤100°.

[0040] With a design θ between 80° and 100°, the spatial orientation of the brush segment 230 ensures that, during rotation, the brush segments 230 of adjacent cleaning sections 200 are approximately parallel, and the spatial distance between them increases. When hair moves in the air, it is difficult for it to bridge across two non-collinear, non-radial brush segments 230, thus significantly reducing the possibility of hair tangling between adjacent cleaning sections 200. When θ is less than 80°, the second connecting segment 220 and the brush segment 230 connected to it tilt excessively inward, causing the brush segments 230 to approach each other too closely during rotation, increasing the possibility of hair bridging and tangling between adjacent brush segments 230. Conversely, when θ is greater than 100°, the outward angle of the brush segment 230 is too large, which may not only affect structural strength but also cause the brush segment 230 to interfere with the ground or obstacles when near the wall, reducing the edge cleaning effect and increasing operating resistance. By controlling the included angle θ between 80° and 100°, it is possible to ensure that the brush segment 230 has a sufficient outward angle to reach into corners and crevices for efficient cleaning, while also ensuring that the brush segments 230 of adjacent cleaning sections 200 maintain sufficient space intervals when rotating at high speed. This allows the hair that is lifted to move in a state approximately perpendicular to the extension direction of the brush segment 230 under the action of centrifugal force, and to maintain an approximately parallel relationship with adjacent brush segments 230. This reduces the probability of hair crossing multiple brush segments 230 and forming entanglements, avoiding problems such as increased motor load, decreased speed, or even motor overheating and damage caused by hair entanglement, thus improving the operational stability and reliability of the cleaning robot.

[0041] Preferably, θ = 90°. That is, the second connecting segment 220 is vertically connected to the free end of the first connecting segment 210, causing the brush segment 230 to have a significant lateral offset relative to the mounting part 100 in space, forming a stable "L"-shaped structure. This orthogonal connection of the first connecting segment 210 and the second connecting segment 220 maximizes the spatial distance between adjacent brush segments 230 and optimizes the misalignment of their movement trajectories. The θ = 90° design ensures that the second connecting segment 220 and its connected brush segment 230 are completely deviated from the radial extension line of the mounting part 100. During the high-speed rotation of the side brush assembly 10, the hair raised by the cleaning part 200 is mainly thrown outward along the tangential direction, while the brush segments 230 of the adjacent cleaning part 200 are located in their lateral vertical direction. The two have approximately parallel and non-intersecting running trajectories in space, greatly reducing the possibility of hair bridging and tangling between different brush segments 230. The θ = 90° design ensures sufficient outward extension distance while preventing insufficient spacing of the brush segments 230 due to an excessively small angle, and also avoiding structural interference or increased rotational inertia caused by an excessively large angle. Furthermore, the 90° right-angle connection clarifies the force transmission path; the first connecting segment 210 primarily bears tensile and bending loads, while the second connecting segment 220 primarily bears torsional and lateral forces, which facilitates a rational distribution of structural strength and improves overall rigidity and durability.

[0042] In other implementations, θ may also satisfy: 75°≤θ<80°; or, 100°<θ≤105°.

[0043] In one implementation, please refer to Figure 2 and Figure 3 The second connecting segment 220 is curved in an arc along its extension direction, and the height of the free end of the second connecting segment 220 in the axial direction of the mounting part 100 is lower than the height of its connection end with the first connecting segment 210.

[0044] The second connecting segment 220 is curved along its extension direction, meaning it has a smooth arc-shaped profile. The height of the free end of the second connecting segment 220 in the axial direction of the mounting portion 100 is lower than the height of its connection end with the first connecting segment 210. This means that when the cleaning robot is in use, the height of the free end of the second connecting segment 220 from the ground is less than the height of its connection end with the first connecting segment 210 from the ground. In other words, the second connecting segment 220 slopes downwards from its end near the mounting portion 100 (connection end) to its far end (free end), meaning the brush segment 230 is generally offset downwards. This arc-shaped, decreasing-height geometry allows the brush segment 230 to more naturally conform to the ground contour when the side brush assembly 10 rotates at high speed. Especially in complex areas such as near walls, baseboards, or the bottom of furniture, it effectively avoids the jumping or lifting-off phenomenon that may occur with rigid straight rod structures, thereby improving the cleaning adhesion between the side brush and the ground. Meanwhile, due to its lower free end position, the brush segment 230 operates at an angle, enhancing its ability to clean dust and hair accumulated in crevices. This allows it to more effectively lift hidden debris and guide it towards the robot's suction port 41. For example, when cleaning the bottom edge of a carpet, hair and fine dust often accumulate there due to static electricity and pressure, making it difficult for ordinary straight brush bristles to reach. The brush segment 230, with its angled position, can easily insert into the tiny gaps at the bottom of the carpet, lifting and pushing deeply hidden contaminants towards the suction port 41 during rotation, thus improving its cleaning ability in areas where debris is hidden.

[0045] When the side brush rotates at high speed, the hair swept up is mainly thrown outward along the extension direction of the brush segment 230 under the action of centrifugal force. The second connecting segment 220 is curved downward. The brush segments 230 of adjacent cleaning sections 200 are not only laterally offset in space, but also have a longitudinal height difference. This makes it more difficult for the hair lifted by one cleaning section 200 to cross and come into contact with the lower-positioned brush segment 230 of another cleaning section 200, thus further increasing the difficulty of hair bridging and entanglement between different cleaning sections 200. In addition, the curved structure has better mechanical flexibility and can produce slight elastic deformation when encountering obstacles, which plays a buffering role, reduces impact load, and extends the service life of the side brush.

[0046] In other embodiments, the second connecting segment 220 may also be a straight line inclined downward in the horizontal direction.

[0047] In one implementation, please refer to Figure 2 and Figure 3 At the free end of the second connecting section 220, the side away from the mounting part 100 is at a higher axial height in the mounting part 100 than the other side near the mounting part 100.

[0048] The free end of the second connecting segment 220 refers to the area where the second connecting segment 220 connects to the brush segment 230. The side of the second connecting segment 220 furthest from the mounting portion 100 and the side closest to the mounting portion 100 refer to the two edges along the width direction of the second connecting segment 220. The side furthest from the mounting portion 100 points outward, i.e., the side further radially; the side closer to the mounting portion 100 points inward, i.e., the side towards the center of rotation. At this free end, the side furthest from the mounting portion 100 is higher than the side closer to the mounting portion 100 in a direction perpendicular to the axial direction of the mounting portion 100. This design creates a twisted structure at the end of the second connecting segment 220, with a lower inner diameter and a higher outer diameter. This asymmetrical height distribution, combined with the overall arcuate curvature and downward tilt of the second connecting segment 220, forms a composite spatial curved surface structure, improving the cleaning adaptability and anti-tangling performance of the side brush assembly 10. Furthermore, this structure has good flexibility and stability. When the cleaning section 200 encounters an obstacle, it can effectively buffer the impact on the first connecting section 210, extending the service life of the cleaning section 200. It also reduces the probability of dust / gravel being blown away and thrown up when sweeping and cutting dust / gravel, thus improving the cleaning effect.

[0049] In other embodiments, at the free end of the second connecting segment 220, the side away from the mounting portion 100 has the same height in the axial direction of the mounting portion 100 as the side closer to the mounting portion 100.

[0050] In one implementation, please refer to Figure 2 and Figure 3 One end of the first connecting segment 210 that connects to the mounting part 100 is higher than the other end of the first connecting segment 210 that connects to the second connecting segment 220.

[0051] The fact that one end of the first connecting segment 210 connects to the mounting part 100 is higher than the other end of the first connecting segment 210 connects to the second connecting segment 220 means that, when the cleaning robot is in use, the ground clearance of the first connecting segment 210 gradually decreases from the mounting part 100 to the second connecting segment 220. The inclined design of the first connecting segment 210, which is higher in the inside and lower in the outside, causes the center of gravity of the entire cleaning part 200 to shift outward and downward, thereby increasing the adhesion pressure of the brush segment 230 to the ground when the side brush assembly 10 rotates at high speed. Especially in the edge and corner areas, it can more effectively press into the gaps, turn up and sweep out hidden dust, particles and hair, and improve the cleaning coverage of hard-to-clean areas such as wall edges and corners.

[0052] In other embodiments, the first connecting segment 210 may also extend in a direction perpendicular to the axial direction of the mounting portion 100.

[0053] In one implementation, please refer to Figures 2 to 4 The cross-sectional area of ​​the first connecting segment 210 at one end of the connecting mounting part 100 is larger than its cross-sectional area at the other end of the connecting second connecting segment 220.

[0054] The cross-sectional area of ​​the first connecting segment 210 refers to the cross-sectional area perpendicular to the length direction of the first connecting segment 210. In injection molding or stamping structures, the cross-sectional area can be changed by altering the thickness, width, or shape.

[0055] The first connecting segment 210 may be a tapered or gradient-diameter structure that gradually tapers outward from the mounting portion 100. Alternatively, the first connecting segment 210 may include a main body segment and a first end and a second end located at both ends of the main body segment. The cross-sectional area of ​​the main body segment remains constant along its length. The first end is connected to the mounting portion 100 and has a cross-sectional area larger than that of the main body segment. The second end is connected to the second connecting segment 220 and has a cross-sectional area the same as that of the main body segment.

[0056] The first connecting section 210, with one end connected to the mounting part 100 near the center of rotation, is the moment fulcrum and main stress area of ​​the entire cleaning part 200, bearing significant bending moments, shear forces, and alternating stresses during the high-speed rotation of the side brush assembly 10. By increasing the cross-sectional area of ​​this end, the structural strength and fatigue resistance at the connection between the first connecting section 210 and the mounting part 100 can be significantly improved, effectively preventing breakage or loosening caused by long-term vibration and impact, and ensuring the reliability and durability of the side brush assembly 10.

[0057] In other embodiments, the first connecting segment 210 may have the same cross-sectional area at any position along its length.

[0058] In one implementation, please refer to Figure 2 and Figure 5The connection between the first connecting segment 210 and the second connecting segment 220 is a rounded transition.

[0059] The connection between the first connecting section 210 and the second connecting section 220 adopts a rounded corner transition structure, avoiding stress concentration points that may be formed by traditional right-angle or acute-angle connections. This allows the first connecting section 210 and the second connecting section 220 to form a smooth and continuous curved surface transition at the intersection area. During the high-speed rotation of the side brush assembly 10, the cleaning section 200 is subjected to continuous centrifugal force, ground friction, and impact loads from collisions with obstacles. Especially in the connection area between the first connecting section 210 and the second connecting section 220, abrupt structural changes can easily lead to stress concentration, becoming a high-risk point for fatigue crack initiation and structural fracture. By setting a rounded corner transition, local stress is effectively dispersed, the stress concentration coefficient is reduced, and the fatigue strength and durability of the connecting section are improved, thereby extending the service life of the side brush assembly 10. Simultaneously, the rounded corner structure has better flexibility, enabling slight elastic deformation when the side brush assembly 10 contacts complex terrain such as carpet edges, thresholds, or furniture bottoms. This provides a buffering effect, reducing the reverse load on the motor and transmission system from rigid impacts, and improving the overall stability and reliability of the machine's operation.

[0060] Furthermore, the rounded corner design further helps prevent tangling. During cleaning, soft debris such as hair and fibers are easily picked up by the side brush section and rotate with it. If there are sharp corners or right-angled grooves at the joints, they can easily become hook points for hair, causing it to entangle and accumulate, eventually affecting the side brush speed or even damaging the motor. The rounded corners eliminate sharp edges and recessed structures, making the surface smooth and continuous. Even if hair comes into contact with this area, it is not easily caught and can smoothly slide off the curved surface and be carried away by the airflow, thus effectively preventing the initial tangling of hair at the structural joints and cutting off the starting point of the tangling chain.

[0061] In one implementation, please refer to Figure 5 The straight-line distance between the second connecting segment 220 and its free end at the connection end with the first connecting segment 210 is not less than the straight-line distance between one end of the first connecting segment 210 at the connection mounting part 100 and the other end connecting the second connecting segment 220.

[0062] The straight-line distance between the first connecting segment 210 and one end of its connection to the mounting part 100 and the other end of its connection to the second connecting segment 220 is L1, and the straight-line distance between the second connecting segment 220 and its free end is L2, where L1 ≤ L2. The longer second connecting segment 220 allows the working area of ​​the brush segment 230 to be further away from the center of the mounting part 100, expanding the cleaning radius of the side brush and enabling it to reach deeper into narrow spaces such as wall edges, corners, and the bottom of furniture, thus improving the cleaning coverage of edge areas. Especially when cleaning right-angle corners, some of the brush segments 230 of the cleaning part 200 can be perpendicular to the wall surface to effectively sweep out dust and hair from the gaps, while the remaining cleaning parts 200 work together to gather the debris towards the suction port 41, achieving all-round and efficient cleaning. Moreover, the lengthening of the second connecting segment 220 further enhances the spatial isolation effect between adjacent brush segments 230. During the high-speed rotation of the side brush, the hair that is lifted mainly moves along the extension direction of the brush segment 230. Because the second connecting section 220 is longer, the brush section 230 it drives maintains a greater distance in both the radial and tangential directions from the connection area of ​​other cleaning sections 200 (especially near the first connecting section 210 and the mounting section 100) on the rotation trajectory. This reduces the possibility of hair bridging and tangling across different cleaning sections 200, effectively blocking the path of hair spreading to the root of the side brush and the motor shaft.

[0063] In other embodiments, the straight-line distance between the second connecting segment 220 and its free end at the connection end with the first connecting segment 210 may be greater than the straight-line distance between one end of the first connecting segment 210 at the connection mounting portion 100 and the other end connecting the second connecting segment 220.

[0064] In one implementation, please refer to Figure 2 and Figure 3 The mounting section 100, the first connecting section 210, and the second connecting section 220 are formed into one piece.

[0065] The mounting section 100, the first connecting section 210, and the second connecting section 220 are molded into a single structure. Through injection molding, compression molding, or other integrated molding processes, the mounting section 100, which might otherwise be manufactured separately, and the connecting structures (i.e., the first connecting section 210 and the second connecting section 220) of the multiple cleaning sections 200 can be integrated into a single component, forming an integral side brush frame. This simplifies the assembly process and improves production efficiency. Integrated molding eliminates the risks of gaps, loosening, or detachment that may occur in traditional separate structures due to screw connections, snap-fit ​​assembly, or adhesive bonding. During the high-speed rotation of the side brush assembly 10, the connecting parts are subjected to continuous centrifugal force and vibration loads. Separate structures are prone to fretting wear or fatigue fracture at the connection points, while the integrated structure avoids such weak points, ensuring continuous and stable force transmission, improving the overall strength and fatigue resistance of the side brush assembly 10, and extending its service life. Moreover, the integrated design ensures the positional accuracy and symmetry of each cleaning section 200 in the circumferential direction of the mounting section 100, making the radial projection direction of each first connecting section 210, the connection angle of the second connecting section 220, and the spatial posture height consistent. This ensures that the cleaning section 200 has good dynamic balance during rotation, reduces vibration and noise, improves operational stability, and helps protect the motor and transmission system.

[0066] In one implementation, please refer to Figure 4 and Figure 5 In the projection of the side brush assembly 10 along the axial direction of the mounting portion 100, the angle between the central axis of the projection of the first connecting segment 210 and the tangent of the outline of the mounting portion 100 at the intersection point is α, and α satisfies: 80°≤α≤100°.

[0067] In the projection of the side brush assembly 10 along the axial direction of the mounting portion 100, the projection of the first connecting segment 210 is a line segment, where the intersection of the axis and the contour of the mounting portion 100 is a tangent to the contour, and the angle between the central axis and the tangent is α. When α is less than 80°, the projection of the central axis of the first connecting segment 210 is too biased towards the front of the rotation direction. When the side brush rotates at high speed clockwise or counterclockwise, the end of the first connecting segment 210 connected to the mounting portion 100 will bear greater frontal resistance and shear stress, which may easily lead to structural fatigue. At the same time, it may cause the cleaning portion 200 to have a dragging effect during rotation, affecting the smoothness of garbage collection. When α is greater than 100°, the first connecting segment 210 is too biased towards the rear of the rotation direction, which may cause the brush segment 230 to reduce the efficiency of pushing garbage during rotation, weaken the cleaning power, and affect the dust collection effect. By controlling α between 80° and 100°, the force direction of the first connecting segment 210 is nearly perpendicular to the rotation tangent direction, effectively dispersing the shear force and bending moment generated during rotation, and improving the structural stability and durability of the connecting part.

[0068] Preferably, α = 90°. That is, the end of the first connecting segment 210 connected to the mounting portion 100 is higher than the end connected to the second connecting segment 220, but the projection of the first connecting segment 210 onto a plane perpendicular to the axial direction of the mounting portion 100 is a line segment extending radially along the mounting portion 100. Thus, the planar layout of the first connecting segment 210 follows the radial path of the mounting portion 100, and its overall extension direction is radially aligned with the rotation center line. When the side brush assembly 10 rotates at high speed, the radial projection direction of each first connecting segment 210 is consistent with the main direction of the centrifugal force it experiences, making the structural force path most direct, effectively reducing torque and lateral stress caused by directional deviation, thereby improving rotational stability, avoiding vibration and sway, and ensuring the smoothness of cleaning operations.

[0069] In other implementations, α may also satisfy: 75°≤α<80°; or, 100°<α≤105°.

[0070] In one embodiment, the second connecting segment 220 is made of silicone.

[0071] The second connecting section 220 is made of silicone. The second connecting section 220 possesses excellent flexibility and elasticity, further enhancing the side brush assembly 10's adaptability, operational stability, and anti-tangling performance in complex floor environments. Silicone, as a high-molecular elastomer, exhibits good wear resistance, aging resistance, and tear resistance, maintaining structural integrity and functional stability under long-term high-speed rotation and frequent contact with the ground and obstacles. The high elasticity of the second connecting section 220 allows the brush section 230 to automatically adjust its contact pressure according to floor undulations during cleaning. It deforms appropriately when encountering carpet edges, thresholds, floor seams, or uneven areas, avoiding rigid collisions and achieving a tighter fit to the floor. This effectively prevents debris from slipping through the gaps between the side brush assembly 10 and the floor, thereby improving its cleaning adaptability to different floor types. Secondly, the silicone material has a low surface friction coefficient and good repellency properties. When hair, fibers and other flexible debris come into contact with the second connecting section 220 during the cleaning process, they are not easily adhered or hooked. They can slide off smoothly and enter the suction port 41 with the airflow, which significantly reduces the risk of hair starting to entangle on the surface of the connecting section and further enhances the overall anti-entanglement effect.

[0072] Furthermore, the damping properties of silicone help absorb the vibration and impact energy generated by the side brush assembly 10 during operation. When the side brush assembly 10 accidentally collides with furniture legs, walls, or small obstacles, the silicone second connecting section 220 acts as a buffer, reducing damage to the motor and transmission system from the reverse impact force, extending the overall service life of the machine, while also reducing operating noise and improving the user experience. The flexibility of silicone allows the second connecting section 220 to precisely achieve complex curved surface structures during the molding process.

[0073] In other embodiments, the material of the second connecting segment 220 may also be a thermoplastic elastomer, thermoplastic polyurethane, rubber, polypropylene / EPDM blend, or metal, etc.

[0074] In one embodiment, the hardness of the first connecting segment 210 is not less than the hardness of the second connecting segment 220.

[0075] The hardness of the first connecting section 210 is no less than that of the second connecting section 220, meaning that the first connecting section 210 has higher rigidity or resistance to deformation compared to the second connecting section 220. As the main load-bearing structure between the cleaning unit 200 and the mounting unit 100, the first connecting section 210 is fixed at one end to the mounting unit 100 and connected to the second connecting section 220 at the other end, serving as the supporting structure for the entire cantilever cleaning unit 200. During the high-speed rotation of the side brush assembly 10, the first connecting section 210 bears significant bending moments, shear forces, and alternating stresses, especially at the connection root with the mounting unit 100, where stress concentration is significant. Therefore, the higher hardness of the first connecting section 210 effectively ensures its structural rigidity, prevents fatigue cracking or loosening due to excessive deformation, ensures stable power transmission, and improves the long-term operational reliability of the side brush assembly 10. In contrast, the second connecting section 220 and its connected brush section 230 directly contact the ground and must adapt to complex terrain such as undulating floors, carpet edges, and corners. The second connecting section 220 is designed with a relatively soft structure (such as silicone material), which gives it good elastic deformation ability, enabling it to adapt to the ground during cleaning, avoid jumping or getting stuck, and improve the cleaning coverage of uneven ground and crevices.

[0076] In addition, the stiffer first connecting segment 210 helps maintain a stable geometric posture, ensuring that the spatial offset angle and height relationship of the second connecting segment 220 are precisely controllable, thereby maintaining an effective isolation distance between adjacent brush segments 230; while the softer second connecting segment 220 is less likely to form a rigid hook point when in contact with hair, and the flexible surface helps hair slip off, reducing the starting point of entanglement.

[0077] In one implementation, please refer to Figure 6 The brush segment 230 includes a hard brush layer 231, a soft brush layer 232 and an electrostatic adsorption layer 233. The hard brush layer 231 is disposed on the outer periphery of the soft brush layer 232, and the soft brush layer 232 is disposed between the hard brush layer 231 and the electrostatic adsorption layer 233.

[0078] The brush section 230 employs a multi-layered composite brush structure. The hard brush layer 231 uses high-strength, wear-resistant hard bristles for cleaning larger particles and stubborn stains. The soft brush layer 232 uses elastic soft bristles that effectively conform to the floor and corners, enhancing cleaning performance. The electrostatic adsorption layer 233 uses fiber bristles with electrostatic adsorption function to attract fine dust. Specifically, when cleaning hard floors, seams, carpet edges, or uneven areas, the soft brush layer 232 can bend and deform moderately, effectively filling tiny depressions in the floor and preventing dust and fine particles from slipping between the bristles and the floor, thus improving cleaning coverage. Simultaneously, the smooth surface of the soft brush layer 232 minimizes friction on surfaces such as wood floors, wooden floors, or tiles, preventing scratches and protecting the floor material. The hard-bristle brush layer 231 is located on the outer periphery of the soft-bristle brush layer 232. Its material has high rigidity and stiffness, maintaining an extended state during high-speed rotation. This allows it to powerfully sweep up large particles, gravel, pet hair, and other debris on the floor, quickly gathering them towards the cleaning robot's suction port 41. The high rigidity of the hard-bristle brush prevents it from collapsing when contacting walls, baseboards, or the bottom of furniture, allowing it to reach deep into crevices, prying up and removing accumulated dust and hair, enhancing cleaning ability in edge areas. Furthermore, when hair is swept up and rotates with the side brushes, it first contacts the hard-bristle brush layer 231, whose regularly arranged rigid bristles are less prone to tangling. Simultaneously, the stronger centrifugal force of the hard-bristle brush more effectively lifts and throws hair into the suction airflow, reducing residence time. The combination of the hard-bristle brush layer 231 and the soft-bristle brush layer 232 ensures both gentle cleaning without damaging the floor and powerful cleaning without missing any areas, adapting to various floor types and debris shapes.

[0079] The electrostatic adsorption layer 233, as the innermost layer of the brush section 230, is made of a material with durable electrostatic electret properties (such as electret-treated polypropylene fibers or functional polymer films), which can continuously generate an electrostatic field during the high-speed rotation of the side brush assembly 10. When fine debris such as dust, dander, and short hairs are swept up by the hard brush layer 231 and pass near the electrostatic adsorption layer 233, charged particles or polar molecules are quickly adsorbed and temporarily fixed on the electrostatic adsorption layer 233 under the action of electrostatic attraction, effectively preventing them from being scattered or escaped again under the action of centrifugal force, ensuring that the debris is continuously transported towards the suction port 41. At the same time, the soft brush layer 232 is located between the hard brush layer 231 and the electrostatic adsorption layer 233, which not only plays a role in structural support and elastic buffering, but also serves as an intermediate transition layer to prevent the rigid impact of the hard brush from being directly transmitted to the electrostatic adsorption layer 233, protecting its structural integrity and extending the duration of the electrostatic function.

[0080] In other embodiments, the brush segment 230 may also adopt a single-layer brush structure, such as only providing a hard brush layer 231; or only providing a hard brush layer 231 and a soft brush layer 232; or only providing a hard brush layer 231 and an electrostatic adsorption layer 233.

[0081] This utility model also proposes a cleaning robot, which includes a body, rollers, a dust collection component and a side brush component. The specific structure of the side brush component is as described in the above embodiments. Since this cleaning robot adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0082] Please see Figure 1 The roller 30 is installed on the body 20, the dust collection component 40 is disposed inside the body 20, the dust collection component 40 is provided with a dust collection port 41, the dust collection port 41 is formed at the bottom of the body 20, the dust collection component 40 includes a roller brush 42 rotatably disposed in the dust collection port 41; the side brush component 10 is disposed at the bottom of the body 20 and located on one side of the dust collection port 41, and the mounting part 100 is rotatably connected to the body 20, so that the cleaning part 200 can rotate with the mounting part 100 to sweep the garbage into the dust collection port 41.

[0083] The rollers 30 support the body 20 and allow it to move freely on the ground. The vacuuming assembly 40 has a vacuum port 41 formed at the bottom of the body 20 for sucking up dust, particles, hair, and other debris from the ground. The vacuuming assembly 40 also includes a roller brush 42 rotatably disposed within the vacuum port 41. The roller brush 42 contacts the surface of the area to be cleaned and cleans it. The roller brush 42 can also further agitate the debris on the ground during rotation to improve vacuuming efficiency. The side brush assembly 10 is disposed at the bottom of the body 20 and located on one side of the vacuum port 41. Its mounting part 100 is rotatably connected to the body 20. It typically achieves rotational power input through gear transmission or direct motor drive, enabling multiple cleaning parts 200 to rotate synchronously at high speed with the mounting part 100.

[0084] When the cleaning robot is working, the cleaning section 200 of the side brush assembly 10 extends outward and rotates at high speed, sweeping the debris outward and guiding it to the vicinity of the suction port 41. Simultaneously, the negative pressure airflow generated by the suction assembly 40 rapidly sucks the debris gathered by the side brush section into the suction port 41, achieving efficient removal. Through the coordinated operation of the side brush assembly 10 and the suction assembly 40, the cleaning robot achieves comprehensive cleaning coverage of edge areas and open areas. Especially when dealing with easily tangled debris such as pet hair and human hair, the side brush assembly 10 significantly reduces the risk of hair getting tangled at the base of the side brush or the motor shaft, avoiding motor overheating, speed reduction, or shutdown due to increased load, thereby improving the overall cleaning efficiency, operational reliability, and service life of the machine.

[0085] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A side brush assembly, characterized in that, The device includes an installation portion and at least one cleaning portion arranged circumferentially along the installation portion. The cleaning portion includes a first connecting segment, a second connecting segment, and a brush segment. One end of the first connecting segment is connected to the installation portion, and the other end intersects and connects to the second connecting segment. The brush segment is connected to the free end of the second connecting segment and extends in a direction away from the first connecting segment.

2. The side brush assembly as described in claim 1, characterized in that, The angle formed between the first connecting segment and the second connecting segment is θ, which satisfies: 80°≤θ≤100°.

3. The side brush assembly as described in claim 1, characterized in that, The second connecting segment is curved in an arc along its extension direction, and the height of the free end of the second connecting segment in the axial direction of the mounting part is lower than the height of its connection end with the first connecting segment.

4. The side brush assembly as described in claim 3, characterized in that, At the free end of the second connecting segment, the side of the segment away from the mounting portion is at a higher axial height in the mounting portion than the side of the segment closer to the mounting portion.

5. The side brush assembly as described in claim 1, characterized in that, The end of the first connecting segment that connects to the mounting part is higher than the other end of the first connecting segment that connects to the second connecting segment.

6. The side brush assembly as described in claim 1, characterized in that, The cross-sectional area of ​​the first connecting segment at the end connected to the mounting part is larger than its cross-sectional area at the other end connected to the second connecting segment.

7. The side brush assembly as described in claim 1, characterized in that, The straight-line distance between the second connecting segment and its connection end with the first connecting segment and its free end is not less than the straight-line distance between the first connecting segment and the other end of its connection end with the mounting part; And / or, the mounting portion, the first connecting segment, and the second connecting segment are formed as a single unit.

8. The side brush assembly as described in claim 1, characterized in that, In the projection of the side brush assembly along the axial direction of the mounting portion, the angle between the central axis of the projection of the first connecting segment and the tangent of the outline of the mounting portion at the intersection point is α, where α satisfies: 80°≤α≤100°.

9. The side brush assembly as claimed in claim 1, characterized in that, The brush segment includes a hard brush layer, a soft brush layer, and an electrostatic adsorption layer. The hard brush layer is disposed on the outer periphery of the soft brush layer, and the soft brush layer is disposed between the hard brush layer and the electrostatic adsorption layer.

10. A cleaning robot, characterized in that, include: Organism; Rollers mounted on the machine body; A dust collection component is disposed within the body of the machine. The dust collection component has a dust collection port formed at the bottom of the body. The dust collection component includes a roller brush rotatably disposed within the dust collection port. as well as The side brush assembly as described in any one of claims 1 to 9, wherein the side brush assembly is disposed at the bottom of the body and located on one side of the suction port, and the mounting part is rotatably connected to the body, such that the cleaning part can rotate with the mounting part to sweep the debris into the suction port.

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