Side brush assembly and cleaning device

Abstract

A side brush assembly (100) and a cleaning device. The side brush assembly (100) comprises a brush base (110), brush arms (120) and bristles (130), wherein the brush arms (120) are distributed on the peripheral side of the brush base (110); the bristles (130) are connected to the ends of the brush arms (120) away from the brush base (110); the brush base (110) is configured to be connected to a driving assembly of a cleaning device, such that the driving assembly drives the brush base (110) to rotate; and the included angles between at least two adjacent brush arms (120) are not equal. Therefore, the bristles (130) can be concentrated on part of the peripheral side of the brush base (110), thereby increasing the free area on the peripheral side of the brush base (110). During the assembly of the side brush assembly (100) with a body, the brush arms (120) and the bristles (130) can all be located in a projection area of the edge of the body, thereby reducing the overall volume of the cleaning device, such that the cleaning device is convenient to store, keep clear of obstacles during traveling, and return to and leave a pile, and has a relatively clean appearance.

Description

Side brush assembly and cleaning equipment Cross-referencing related applications

[0001] This disclosure claims priority to Chinese Patent Application No. 202421459418.4, filed on June 25, 2024, entitled "Side Brush Component and Cleaning Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of smart home technology, and more particularly to a side brush assembly and cleaning device. Background Technology

[0003] With the continuous development of science and technology and the continuous improvement of people's living standards, cleaning equipment, such as intelligent robotic vacuum cleaners, has increasingly entered our daily lives. These devices, relying on a certain level of artificial intelligence, can automatically clean floors in a room.

[0004] Typically, robotic vacuum cleaners use a brushing method to suck up debris from the floor and collect it into their dustbin, thus cleaning the floor. To clean areas beyond the main brush, robotic vacuum cleaners usually have side brushes to increase the cleaning range. For example, current three-claw side brushes often have some bristles exposed outside the main body. This increases the cleaning range as the side brush rotates, thus providing auxiliary cleaning functionality. Summary of the Invention

[0005] The disclosure section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the disclosure is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] An embodiment of the first aspect of this disclosure provides a side brush assembly for a cleaning device. The side brush assembly includes a brush base, brush arms, and bristles, wherein the brush base is configured to be connected to a drive assembly of the cleaning device so that the drive assembly drives the brush base to rotate; when the side brush assembly includes multiple brush arms, the multiple brush arms are non-uniformly distributed in the circumference of the brush base; and the bristles are connected to the end of the brush arm away from the brush base.

[0007] In some embodiments, the side brush assembly includes a first brush arm and a second brush arm, wherein the first brush arm has a first angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the second brush arm has a second angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the first angle and the second angle are not equal.

[0008] In some embodiments, the side brush assembly includes a first brush arm and a second brush arm, wherein the second brush arm is located on the first brush arm; when the side brush assembly is installed on a cleaning device, the distance between the bristles of the first brush arm and the surface to be cleaned is greater than the distance between the bristles of the second brush arm and the surface to be cleaned.

[0009] In some embodiments, the length of the bristles on the first brush arm is greater than the length of the bristles on the second brush arm.

[0010] In some embodiments, the brush arm is spiral-shaped.

[0011] In some embodiments, the brush arm includes a first segment, a second segment, and a third segment arranged sequentially and gradually tapering along the direction from the brush holder to the bristles, wherein the distance between the first segment, the second segment, and the third segment and the brush holder gradually increases along the direction perpendicular to the horizontal plane.

[0012] In some embodiments, the projection of the brush arm onto the horizontal plane is an involute.

[0013] In some embodiments, the brush arm includes a first end connected to the bristles. The first end includes a first portion and a second portion. The second portion and the first portion are disposed opposite each other, with the second portion located above the first portion and protruding from the first portion along the extension direction of the brush arm. The first portion is provided with a protruding structure, and the bristles are arranged obliquely downward from the first end relative to the protruding structure.

[0014] In some embodiments, the second portion is tilted upward relative to the first portion in a direction away from the brush holder.

[0015] In some embodiments, the brush arm is a flexible component.

[0016] In some embodiments, the brush holder has a connection hole for connection with a drive assembly, and the side brush assembly further includes a connector, the connection hole having a segment for receiving the connector.

[0017] In some embodiments, the bristles extend along the tangential direction of the brush arm, and the angle between the extension directions of two bristles is no greater than 120°.

[0018] In some embodiments, the two brush arms are located on the same side of the brush holder via the midline of the brush holder's axis of rotation.

[0019] In some embodiments, the brush holder is provided with a first installation indicator, and the drive assembly is provided with a second installation indicator, wherein the first installation indicator and the second installation indicator match to indicate that the brush holder is in the installation position.

[0020] In some embodiments, when the brush holder is in the installation position, the orthographic projection of the brush bristles onto the horizontal plane is located within the orthographic projection area of ​​the edge of the body of the cleaning device onto the horizontal plane.

[0021] In some embodiments, a first mounting indicator is disposed on the wall of the connecting hole, wherein one of the first mounting indicator and the second mounting indicator is configured as a recess and the other as a protrusion.

[0022] In some embodiments, the connecting hole includes a first hole segment and a second hole segment along the axial direction of the brush holder. The first hole segment is located above the second hole segment and matches the drive assembly. A first installation indicator is disposed in the first hole segment, and a connector passes through the second hole segment to connect with the drive assembly.

[0023] In some embodiments, the connection hole further includes a third segment located below the second segment, with the end of the connector away from the drive assembly accommodated within the third segment.

[0024] In some embodiments, the brush arm includes a second end connected to a brush holder, the brush holder being injection molded over the outside of the second end.

[0025] In some embodiments, when the side brush assembly is mounted on the cleaning device, the distance between the second end and the surface to be cleaned is greater than the distance between the first end and the surface to be cleaned.

[0026] In some embodiments, the hardness of the brush holder is greater than the hardness of the brush bristles.

[0027] In some embodiments, the cleaning device includes: a drive assembly configured to drive the brush holder to switch between an installed position and a working position; or the cleaning device includes: a drive assembly and a telescopic assembly, wherein the telescopic assembly is connected to the brush holder to drive the brush holder to switch between an installed position and a working position.

[0028] In some embodiments, the brush holder is driven such that, when in the mounting position, the entire side brush assembly is retracted to the edge of the body of the cleaning device within the projection area on the horizontal plane; and when in the working position, the bristles are extended beyond the edge of the body outside the projection area on the horizontal plane.

[0029] An embodiment of the second aspect of this disclosure provides a cleaning device, including: a main body and a side brush assembly of any one of the first aspects, the side brush assembly being located at the bottom of the main body.

[0030] The side brush assembly and cleaning device disclosed herein include a brush base, brush arms, and bristles. The brush base is connected to a drive assembly, enabling the drive assembly to rotate the brush base relative to the main body, thereby causing the brush arms and bristles to rotate synchronously, achieving the auxiliary cleaning function of the side brush assembly. Because the brush arms are non-uniformly distributed around the brush base, compared to the symmetrical structure of the brush arms in the three-claw structure of related technologies, the bristles are more concentrated on one side of the brush base, while the other side of the brush base is unoccupied. Furthermore, the unoccupied area on the periphery of the brush base is larger than that of the three-claw structure side brush. When encountering easily entangled objects such as hair, due to the larger unoccupied area on the periphery of the brush base of the side brush assembly of this disclosure, these easily entangled objects are more easily guided to the unoccupied area during the movement of the bristles, rather than tightly entangled on the brush arms and bristles, thus greatly reducing the risk of entanglement.

[0031] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0033] Figure 1 shows a perspective view of the three-dimensional structure of the side brush assembly provided in an embodiment of this disclosure;

[0034] Figure 2 shows a structural schematic diagram of the side brush assembly provided in an embodiment of the present disclosure from one perspective;

[0035] Figure 3 shows a structural schematic diagram of the side brush assembly provided in an embodiment of this disclosure from another perspective;

[0036] Figure 4 shows a cross-sectional view of the side brush assembly in the AA direction of the embodiment shown in Figure 3;

[0037] Figure 5 shows a structural schematic diagram of the side brush body provided in an embodiment of this disclosure from another perspective;

[0038] Figure 6 shows a structural schematic diagram of the brush body provided in another embodiment of the present disclosure;

[0039] Figure 7 shows a three-dimensional structural schematic diagram of the side brush assembly provided in an embodiment of this disclosure from another perspective.

[0040] The correspondence between the reference numerals and component names in Figures 1 to 7 is as follows:

[0041] 100 Side brush assembly, 110 Brush holder, 111 First mounting indicator, 112 Connecting hole, 1121 First hole segment, 1122 Second hole segment, 1123 Third hole segment, 120 Brush arm, 121 First end, 1211 First part, 1212 Second part, 122 Protruding structure, 123 Second end, 124 First segment, 125 Second segment, 126 Third segment, 130 Brush bristles. Detailed Implementation

[0042] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided in this disclosure. However, it will be apparent to those skilled in the art that the technical solutions provided in this disclosure can be implemented without one or more of these details.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0044] Exemplary embodiments according to this disclosure will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and that the concept of these exemplary embodiments will be fully conveyed to those skilled in the art.

[0045] As shown in Figures 1 to 7, an embodiment of the first aspect of this disclosure provides a side brush assembly 100, and an embodiment of the second aspect of this disclosure provides a cleaning device, wherein the side brush assembly 100 is applied to the cleaning device, and the cleaning device can be a robot vacuum cleaner, a robot vacuum and mop combo, or other cleaning robots that meet the requirements.

[0046] Specifically, cleaning equipment includes, but is not limited to, a main body, a cleaning system, and a drive system. These systems coordinate with each other to enable the cleaning equipment to move autonomously and perform its cleaning function. The functional components constituting these systems are integrated within the main body. It is understood that the cleaning equipment can be a self-moving cleaning device, which is a device that automatically performs cleaning operations in a designated area without user intervention.

[0047] The main body includes a front part and a rear part, and can have an approximately circular shape or other shapes, including but not limited to an approximately D-shaped shape with a front and rear circle, and a rectangular or square shape with a front and rear.

[0048] The cleaning system includes a dry cleaning system, in which the cleaning equipment can be a robot vacuum cleaner; or the cleaning system includes both wet and dry cleaning systems, in which the cleaning equipment can be a robot vacuum and mop combo.

[0049] Dry cleaning systems can include roller brushes, dustbins, and vacuum fans. The roller brushes, which have some contact with the ground, sweep up debris and carry it to the suction port between the roller brush and the dustbin. The suction fan then draws the debris into the dustbin with the powerful airflow generated by the dustbin.

[0050] Furthermore, the cleaning equipment provided in this embodiment may also include a side brush assembly 100, which is rotatably connected to the main body and is used to move debris and other impurities outside the roller brush area to the roller brush area of ​​the cleaning system.

[0051] Currently, side brush assemblies in related technologies are typically designed with a three-pronged structure. This means the assembly usually includes three brush arms and three bristles, with the brush arms arranged symmetrically around the brush base. This symmetrical structure easily leads to entanglement of fibers and other easily wrapped objects onto the brush arms, affecting the normal rotation of the side brush. During the assembly process of these side brush assemblies, the three-pronged structure exposes one bristle to the outside of the main body. As the side brush rotates, the three bristles sequentially rotate to the outside of the main body to increase the cleaning area and provide auxiliary cleaning. However, this design means that even when the side brush assembly is not in use, one bristle remains exposed, resulting in a larger overall size of the cleaning device, making it inconvenient to store and move.

[0052] In view of this, as shown in Figures 1, 2, and 3, the side brush assembly 100 provided in the first aspect embodiment of this disclosure includes: a brush base 110, brush arms 120, and brush bristles 130. The brush base 110 is configured to be connected to a drive assembly of a cleaning device so that the drive assembly drives the brush base to rotate. There may be multiple brush arms 120, and when the side brush assembly includes multiple brush arms 120, the multiple brush arms 120 are non-uniformly distributed circumferentially around the brush base 110. The brush bristles 130 are connected to the end of the brush arm 120 away from the brush base 110.

[0053] The drive assembly can be installed on the main body of the cleaning equipment. The brush holder 110 is connected to the drive assembly, so that the drive assembly can drive the brush holder 110 to rotate relative to the main body. Since the bristles 130 are connected to the brush holder 110 through the brush arm 120, the rotation of the brush holder 110 can drive the brush arm 120 and the bristles 130 to rotate synchronously, so that the bristles 130 can guide debris and other impurities outside the roller brush area into the roller brush area of ​​the cleaning system, thereby achieving the function of auxiliary cleaning and improving the cleaning effect of the cleaning equipment.

[0054] In this embodiment, when the side brush assembly 100 includes a plurality of brush arms 120, the plurality of brush arms 120 are non-uniformly distributed in the circumference of the brush holder 110, that is, the brush arms 120 have an asymmetrical structure in the circumference of the brush holder 110. In some embodiments, when the plurality of brush arms 120 includes at least a first brush arm and a second brush arm, the first brush arm has a first angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the second brush arm has a second angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the first angle and the second angle are not equal. It can be understood that the bristles 130 are correspondingly arranged with the brush arms 120, and the number of bristles 130 is the same as the number of brush arms 120, that is, the bristles 130 have an asymmetrical structure in the circumference of the brush holder 110. This arrangement allows the bristles 130 to be relatively concentrated on a portion of the periphery of the brush holder 110, while the other portion of the periphery of the brush holder 110 is empty. Furthermore, with the same number of brush arms 120, the asymmetrical structure of the brush arms 120 around the brush holder 110 results in a larger empty area on the periphery compared to a symmetrical structure. Therefore, when encountering easily entangled objects such as hair, the larger empty area on the periphery of the brush holder of this side brush assembly allows these easily entangled objects to be more easily guided to this empty area during brush movement, rather than tightly entangled on the brush arms and bristles, thus greatly reducing the risk of entanglement. Specifically, when the bristles capture objects such as hair during rotation, as the brush holder continues to rotate, the hair and other objects will gradually move towards the empty area of ​​the brush holder under the influence of centrifugal force and inertia. Due to the larger empty area and the absence of obstruction from the brush arms and bristles, the hair and other objects are unlikely to form a tight entanglement structure, thus greatly reducing the risk of entanglement. Furthermore, during the assembly of the side brush assembly 100 with the main body, the relative positions of the brush arm 120, the bristles 130, and the main body can be reasonably adjusted so that the free portion around the brush holder 110 faces the outer edge of the nearby main body. This ensures that the brush arm 120 and the bristles 130 are both located within the edge projection area of ​​the main body. In other words, the orthographic projection of the brush arm 120 and the bristles 130 on the horizontal plane is located within the area of ​​the orthographic projection of the edge of the main body on the horizontal plane. Compared with the side brushes in related technologies where the brush arm of the three-claw structure has a symmetrical structure around the brush holder and some bristles are exposed on the outside of the main body, this reduces the space occupied by the cleaning equipment, making it easier to store, avoid obstacles, and install and remove posts. At the same time, it makes the appearance neater and improves market competitiveness.

[0055] Specifically, in the related technology, the three-claw structure side brush typically has three brush arms symmetrically arranged around the brush holder, meaning the angle between the midlines of two adjacent brush arms is 120°. Therefore, ignoring the width of the brush arm 120, the included angle of the area surrounding the brush holder 110 is approximately 120°. However, in this embodiment, the brush arms 120 are asymmetrically arranged around the brush holder 110, such as the three brush arms 120 being asymmetrically arranged around the brush holder 110. Ignoring the width of the brush arm 120, the included angle of the area surrounding the brush holder 110 will be greater than 120°. Alternatively, when the number of brush arms 120 is greater than three or less than three, the position of the brush arms 120 around the brush holder 110 can be reasonably set to make the included angle of the area surrounding the brush holder 110 greater than 120°, ignoring the width of the brush arm 120. In this way, compared with the three-claw structure in related technologies, a larger free area will be formed around the brush holder, making it easier for easily entangled objects to be guided to the free area during the movement of the bristles, rather than tightly wrapped around the brush arm and bristles. Furthermore, during the assembly of the side brush assembly 100 with the main body, the relative positions of the brush arm 120, bristles 130, and the main body can be reasonably adjusted so that the free area around the brush holder 110 faces the outer edge of the adjacent part of the main body. This ensures that the brush arm 120 and bristles 130 are both located within the edge projection area of ​​the main body, and the bristles 130 are not exposed outside the main body, reducing the space occupied by the cleaning device. It is understood that as the brush holder 110 rotates with the drive assembly, the bristles 130 will extend beyond the edge projection area of ​​the main body to increase the cleaning range and achieve the function of auxiliary cleaning.

[0056] In some possible embodiments provided in this disclosure, the number of brush arms 120 is set to one or two. It is understood that the number of bristles 130 is the same as the number of brush arms 120, that is, the number of bristles 130 is one or two. Compared with the three-claw structure side brush in the related art, this arrangement allows the bristles 130 to be more concentratedly distributed on part of the periphery of the brush base 110, while the other part of the periphery of the brush base 110 is empty. Moreover, the empty part of the periphery of the brush base 110 is larger than that of the three-claw structure side brush. Therefore, when encountering easily entangled objects such as hair, since there is a large empty area on the periphery of the brush base of the side brush assembly of this disclosure, these easily entangled objects are more easily guided to the empty area during the movement of the bristles, rather than tightly wrapped around the brush arms and bristles, thereby greatly reducing the risk of entanglement. Furthermore, during the assembly of the side brush assembly 100 with the main body, the relative positions of the brush arm 120, the bristles 130, and the main body can be reasonably adjusted so that the free portion around the brush base 110 faces the outer edge of the nearby part of the main body. This ensures that the brush arm 120 and the bristles 130 are both located within the edge projection area of ​​the main body. In other words, the projection of the brush arm 120 and the bristles 130 on the horizontal plane is located within the area of ​​the projection of the main body on the horizontal plane. Compared with the side brush of the three-claw structure in related technologies where the bristles are exposed on the outside of the main body, this reduces the space occupied by the cleaning equipment, making it easier to store, avoid obstacles, and install and remove posts. At the same time, it results in a neater appearance and improves market competitiveness.

[0057] Specifically, in the related art, the three-claw side brush typically has three brush arms 120 evenly distributed around the brush base 110, meaning the angle between the midlines of two adjacent brush arms is 120°. Therefore, ignoring the width of the brush arms 120, the included angle of the surrounding space of the brush base 110 is approximately 120°. In this embodiment, when there is only one brush arm 120, ignoring the width of the brush arm 120, the included angle of the unused portion around the brush base 110 is approximately 360°, which is obviously much larger than the included angle of the surrounding space of the brush base in a three-claw side brush. When there are two brush arms 120, if the two brush arms 120 are arranged around the brush base 110 at a maximum included angle of 180°, ignoring the width of the brush arms 120, the included angle of the unused portion around the brush base 110 is approximately 180°, which is also obviously larger than the included angle of the surrounding space of the brush base 110 in a three-claw side brush. Therefore, because the area angle of the peripheral space of the brush base 110 of the side brush assembly 100 in this embodiment is relatively large, when encountering easily entangled objects such as hair, these objects are more easily guided to the free area during the movement of the brush bristles, rather than tightly wrapped around the brush arm and bristles, thus greatly reducing the risk of entanglement. Furthermore, during the assembly of the side brush assembly 100 with the main body, the relative positions of the brush arm 120, bristles 130, and the main body can be reasonably adjusted so that the free area on the periphery of the brush base 110 faces the outer edge of the adjacent part of the main body. This ensures that the brush arm 120 and bristles 130 are both located within the edge projection area of ​​the main body, and the bristles 130 are not exposed outside the main body, reducing the space occupied by the cleaning device. It is understood that when the brush base 110 rotates with the drive assembly, the bristles 130 will extend beyond the edge projection area of ​​the main body to increase the cleaning range and achieve the function of auxiliary cleaning.

[0058] In some possible embodiments provided in this disclosure, the brush holder 110 is provided with a first installation indicator 111, and the drive assembly is provided with a second installation indicator. The first installation indicator 111 and the second installation indicator match to indicate that the brush holder 110 is in the installation position.

[0059] In this embodiment, by setting a first installation indicator 111 on the brush holder 110 and a second installation indicator on the drive assembly, during the process of connecting and assembling the side brush assembly 100 with the drive assembly, when the first installation indicator 111 matches the second installation indicator, the brush holder 110 is indicated to be in the installation position. The brush holder 110 can be connected to the drive assembly in this position to realize the connection and assembly of the side brush assembly 100 and the drive assembly.

[0060] Furthermore, when the brush holder 110 is in the installation position, the bristles 130 are located within the edge projection area of ​​the main body of the cleaning device. That is, the orthographic projection of the bristles 130 on the horizontal plane is located within the orthographic projection area of ​​the edge of the main body of the cleaning device on the horizontal plane. In other words, the bristles 130 do not extend beyond the edge projection area of ​​the main body. Therefore, compared with the related technology in which some bristles are exposed on the outside of the main body, the overall volume of the cleaning device when the brush holder 110 is in the installation position is reduced, thereby reducing the space occupied by the cleaning device when the brush holder 110 is in the installation position. This makes the cleaning device easier to store, easier to avoid obstacles, and easier to install and remove from the device when the brush holder 110 is in the installation position. At the same time, it makes the appearance neater and improves market competitiveness.

[0061] When the brush holder 110 is in the installation position, the bristles 130 are located within the projection area of ​​the edge of the main body of the cleaning device. This can be understood as the orthographic projection of the bristles 130 on the horizontal plane being located within the area of ​​the orthographic projection of the edge of the main body on the horizontal plane. Alternatively, the brush holder 110 may also have a working position where some of the bristles 130 are located outside the main body. In other words, when the brush holder 110 is in the working position, at least some of the bristles 130 are located within the edge projection area of ​​the main body of the cleaning device. This can be understood as the orthographic projection of some of the bristles 130 on the horizontal plane being located outside the area of ​​the orthographic projection of the edge of the main body on the horizontal plane; or, all the bristles 130 may have their orthographic projections on the horizontal plane located outside the area of ​​the orthographic projection of the edge of the main body on the horizontal plane. In this example, the side brush assembly 100 can be configured as a telescopic structure relative to the main body, so that when the brush holder 110 is in the installation position, the entire side brush assembly 100 can retract into the edge projection area of ​​the main body, and when the brush holder 110 is in the working position, all the bristles 130 can extend beyond the edge projection area of ​​the main body. Specifically, when the brush holder 110 is in the working position, the cleaning equipment can use the side brush assembly 100 for auxiliary cleaning. When the brush holder 110 is in the installation position, the cleaning equipment can perform auxiliary cleaning without using the side brush assembly 100. The cleaning equipment can be in the storage position, performing obstacle avoidance operations, loading and unloading operations, and auxiliary operations such as charging, dust collection, and water replenishment on the charging pile. The charging pile mentioned in this application can be understood as a charging pile, dust collection pile, base station, etc., used in conjunction with the cleaning equipment.

[0062] Furthermore, by setting a first installation indicator 111 on the brush holder 110, since the relative positions of the first installation indicator 111 and the brush arm 120 are known during the design process, and the relative positions of the bristles 130 and the brush arm 120 are also known during the design process, the positions of the brush arm 120 and the bristles 130 relative to the main body can be restricted by matching the first installation indicator 111 with the second installation indicator on the drive assembly, so that when the brush holder 110 is in the installation position, the bristles 130 are located within the edge projection area of ​​the main body.

[0063] Furthermore, the first installation indicator 111 and the second installation indicator cooperate to limit the rotation of the brush holder 110 relative to the main body, ensuring that the brush holder 110 remains in the installation position relative to the main body when the drive assembly is not in operation. Specifically, the drive assembly can be a motor, with its output shaft connected to the brush holder 110. The motor can be equipped with a locking mechanism to ensure that the output shaft does not rotate when the motor is not in operation. This ensures that after the output shaft and the brush holder 110 are in the installation position through the cooperation of the first installation indicator 111 and the second installation indicator, the brush holder 110 remains in the installation position, preventing the brush holder 110 from rotating relative to the output shaft and causing the bristles 130 to extend beyond the edge projection area of ​​the main body when the motor is not in operation.

[0064] As shown in Figures 1, 2, 3 and 4, in some possible embodiments provided in this disclosure, the brush holder 110 has a connection hole 112 for connecting with the drive assembly. A first installation indicator 111 is disposed on the hole wall of the connection hole 112. Therefore, when the brush holder 110 is connected to the drive assembly through the connection hole 112, the first installation indicator 111 on the hole wall of the connection hole 112 matches the second installation indicator on the drive assembly, which plays a limiting and foolproof role and can accurately and conveniently indicate that the brush holder 110 is in the installation position.

[0065] In this design, one of the first installation indicator 111 and the second installation indicator is a recess, and the other is a convex part. The recess and convex parts are easy to manufacture and implement, which helps reduce the overall manufacturing cost of the side brush assembly 100. At the same time, the recess and convex parts provide good positioning and error prevention, and facilitate assembly. They can accurately, conveniently, and quickly indicate the installation position of the brush holder 110, making them suitable for widespread application.

[0066] Specifically, the first mounting indicator 111 can be a protrusion, and the second mounting indicator can be a recess, or the first mounting indicator 111 can be a recess, and the second mounting indicator can be a protrusion. It is understood that in some examples, the first mounting indicator 111 can include both a recess and a protrusion, and the second mounting indicator can also include corresponding protrusions and recesses, thereby satisfying the need for different structures for the first mounting indicator 111 and the second mounting indicator.

[0067] Furthermore, the drive assembly includes a motor, and the output shaft of the motor is connected to the brush holder 110 through a connecting hole 112, meaning that the second mounting indicator can be disposed on the output shaft. Specifically, the first mounting indicator 111 can be a protruding structure 122, and the second mounting indicator can be a recessed structure.

[0068] As shown in Figures 3 and 4, in some possible embodiments provided in this disclosure, the side brush assembly 100 further includes a connector. The connecting hole 112 includes a first hole segment 1121 and a second hole segment 1122 along the axial direction of the brush holder 110. The first hole segment 1121 is located above the second hole segment 1122 and matches the drive assembly. A first mounting indicator 111 is disposed in the first hole segment 1121, and the connector passes through the second hole segment 1122 and connects to the drive assembly. The axial direction of the brush holder 110 can be in the direction shown by arrow Z in Figure 4.

[0069] Therefore, during the assembly of the side brush assembly 100 and the drive assembly, the first hole segment 1121 is matched with the drive assembly for initial positioning. Then, the first installation indicator 111 of the first hole segment 1121 is matched with the second installation indicator on the drive assembly to achieve a limiting and foolproof function, accurately positioning the brush holder 110 and the drive assembly. This ensures that the brush holder 110 can be accurately and quickly placed in the installation position, ensuring that the bristles 130 are located within the edge projection area of ​​the main body. Then, the connector passes through the second hole segment 1122 and connects to the drive assembly, thus achieving a reliable connection between the brush holder 110 and the drive assembly. This operation is simple and helps improve the assembly efficiency and accuracy of the brush holder 110 and the drive assembly.

[0070] Specifically, the first hole segment 1121 can be polygonal, and the output shaft of the drive component can also be polygonal. Thus, the combination of the polygonal hole and the polygonal shaft provides a good limiting effect, restricting the rotation of the brush holder 110 relative to the output shaft and ensuring that the brush holder 110 and the output shaft rotate synchronously. Alternatively, the first hole segment 1121 can be hexagonal, and the output shaft of the drive component can also be hexagonal. It is understood that the first hole segment 1121 can also be other shapes.

[0071] The opening size of the first hole segment 1121 can be larger than the opening size of the second hole segment 1122. For example, the connector can be a bolt. The second hole segment 1122 can be circular. The opening size of the first hole segment 1121 can be understood as the radial dimension of the second hole segment 1122. The end of the output shaft of the drive assembly is provided with a threaded hole. The bolt passes through the second hole segment 1122 and connects with the threaded hole, thereby connecting the output shaft and the brush holder 110.

[0072] As shown in FIG4, in some possible embodiments provided in this disclosure, the connection hole 112 further includes a third hole segment 1123 located below the second hole segment 1122, and the end of the connector away from the drive assembly is accommodated in the third hole segment 1123.

[0073] In this embodiment, the third hole segment 1123 provides a receiving space for the end of the connector away from the drive component, so that the connector does not protrude from the bottom of the brush holder 110. This reduces or avoids the problem that hair, thread and other debris can easily get tangled on the connector when the connector protrudes from the bottom of the brush holder 110, making the connector difficult to disassemble or jamming. This reduces the interference of hair, thread and other debris on the connector, allowing the connector to be disassembled quickly and conveniently, thereby improving the disassembly and maintenance efficiency of the side brush assembly 100, while ensuring that the side brush assembly 100 can work reliably.

[0074] Specifically, the opening size of the third hole 1123 can be larger than the opening size of the second hole 1122. The second hole 1122 can be circular, and the opening size of the third hole 1123 can be understood as the radial dimension of the second hole 1122. The connector can be a bolt, with the bolt head housed within the third hole 1123, preventing the bolt from protruding from the bottom of the brush holder 110 and reducing or preventing the bolt head from being entangled in hair.

[0075] As shown in Figures 1, 2 and 5, in some possible embodiments provided in this disclosure, the number of brush arms 120 is two, including a first brush arm and a second brush arm. The first brush arm has a first angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the second brush arm has a second angle between its extension direction relative to the brush holder and the tangent of the brush holder. The first angle and the second angle are not equal.

[0076] In other embodiments, the second brush arm is located on top of the first brush arm. When the side brush assembly is mounted on the cleaning device, the distance between the bristles of the first brush arm and the surface to be cleaned is greater than the distance between the bristles of the second brush arm and the surface to be cleaned. In this embodiment, the length of the bristles of the first brush arm is greater than the length of the bristles of the second brush arm.

[0077] In some embodiments, the brush arm 120 is spiral-shaped, and the bristles 130 correspond to the brush arm 120, that is, there are two bristles 130 connected to the corresponding brush arm 120. The bristles 130 extend along the tangential direction of the brush arm 120, and the included angle between the extension directions of the two bristles 130 is no greater than 120°.

[0078] The two brush arms 120 and the two bristles 130 ensure that the side brush assembly 100 has a large cleaning range, which helps to ensure a good cleaning effect.

[0079] The included angle between the extending directions of the two bristles 130 can be as shown by angle α in Figure 5, i.e., α is less than or equal to 120°. This allows the two brush arms 120 and the two bristles 130 to be relatively concentrated on a portion of the periphery of the brush holder 110, while the other portion of the periphery of the brush holder 110 is empty, without brush arms 120 or bristles 130. By appropriately setting the installation position of the brush holder 110, when the brush holder 110 is in the installation position, the brush arms 120 and bristles 130 are arranged close to the interior of the main body, while the empty portion of the periphery of the brush holder 110 faces the exterior of the main body, ensuring that the two bristles 130 are located within the edge projection of the main body. Furthermore, the brush holder 110 can be positioned at the bottom of the main body near the edge, ensuring that when the brush holder 110 is in the installation position, the bristles 130 are within the edge projection area of ​​the main body, and when the brush holder 110 is in the working position, the bristles 130 can extend smoothly to the exterior of the main body, ensuring a larger cleaning range and facilitating easy switching between the installation and working positions.

[0080] Furthermore, since the side brush assembly in related technologies is usually installed at the bottom of the main body near the edge, such as when there are three brush arms, one bristle usually extends outside the edge projection area of ​​the main body, making the overall size of the cleaning device large, inconvenient to store and move, and untidy in appearance. In this embodiment, by setting the side brush assembly 100 as two brush arms 120, and the bristles 130 extending along the tangent direction of the brush arm 120, the included angle between the extension directions of the two bristles 130 is no greater than 120°. Thus, without changing the original structure of the cleaning device, the side brush assembly 100 in this embodiment is adapted to the first installation indicator 111 and the second installation indicator of the drive assembly, so that the brush base 110 is in the installation position, ensuring that the bristles 130 are located within the edge projection area of ​​the main body, reducing the overall size of the cleaning device, thereby reducing the space occupied by the cleaning device. This makes the cleaning device easier to store, easier to move around obstacles, and easier to load and unload when the brush base 110 is in the installation position. At the same time, it makes the appearance of the cleaning device more tidy and improves its market competitiveness.

[0081] Specifically, the included angle α between the extending directions of the two bristles 130 can be 120°, 110°, 100°, 90°, 80°, or other angles. By reasonably setting the angle α between the extending directions of the two bristles 130, when the brush holder 110 is in the installation position, the two bristles 130 can be located more comprehensively within the edge projection area of ​​the main body. At the same time, it ensures that the two bristles 130 have a large radiation range, so as to ensure a good auxiliary cleaning effect when the brush holder 110 is in the working position.

[0082] As shown in Figures 1, 5, and 6, in some possible embodiments provided in this disclosure, the projection of the brush arm 120 onto the horizontal plane is an involute. An involute is the trajectory of a point K on a straight line when it rolls purely on a circle. In this embodiment, the brush arm 120 is spiral-shaped, and its projection onto the horizontal plane is an involute. This can be understood as follows: the brush holder 110 is cylindrical, its axis can be considered perpendicular to the horizontal plane, and the brush arms 120 are spirally distributed along the axis of the brush holder 110. The projection of the brush arm 120 onto the horizontal plane coincides with the portion of the trajectory of point K on the straight line when it rolls purely on the cylindrical brush holder 110, where the projection connects to the brush holder 110. Pure rolling refers to rolling where the contact point between a rigid body and a plane is relatively stationary at the instant of contact, without any relative sliding, i.e., rolling with zero relative velocity. When the plane is a fixed plane, the contact point is the instantaneous center of velocity of the two objects.

[0083] In this design, the horizontal plane can be considered as the rotation axis perpendicular to the brush holder 110. Since the brush arm 120 is helical, its projection on the horizontal plane is a helical involute. Thus, during the rotation of the brush holder 110, hair, thread, and other debris wrapped around the brush arm 120 will move along the rotating, helical brush arm 120 and become tightly wrapped around it. As the brush holder 110 continues to rotate, the force of the debris wrapping around the brush arm 120 increases. By configuring the brush arm 120 as an elastic element, when the wrapping force of the debris reaches the limit that the elastic brush arm 120 can withstand, the brush arm 120 will elastically deform, ejecting the debris wrapped around it. This reduces the likelihood of hair, thread, and other debris becoming entangled, thereby reducing the frequency of cleaning the side brush assembly 100 and extending its replacement cycle, reducing usage costs and improving the user experience. In some embodiments, the brush arm 120 is configured as a flexible element.

[0084] As shown in Figure 5, in some possible embodiments provided in this disclosure, the two brush arms 120 are located on the same side of the brush holder 110 through the midpoint of the rotating shaft of the brush holder 110. This arrangement ensures that the two brush arms 120 are relatively concentrated on the periphery of the brush holder 110, while a large area of ​​the periphery of the brush holder 110 is not provided with brush arms 120, so as to ensure that the original structure of the cleaning equipment is not changed. When the side brush assembly 100 is connected to the drive assembly, the two bristles 130 can be effectively located within the edge projection area of ​​the main body when the brush holder 110 is in the installation position, while when the brush holder 110 is in the working position, some of the bristles 130 can be located outside the edge projection area of ​​the main body.

[0085] As shown in Figure 5, in some possible embodiments provided in this disclosure, the angle between the extending direction of the bristles 130 and the extending direction of the connected brush arm 120 relative to the extending direction of the brush base 110 is no greater than 120°, that is, the angle between the extending direction of the bristles 130 and the extending direction of the connected brush arm 120 relative to the extending direction of the brush base 110 is less than or equal to 120°. Specifically, the angle between the extending direction of the bristles 130 and the extending direction of the connected brush arm 120 relative to the extending direction of the brush base 110 can be as shown by angle β in Figure 5, that is, β is less than or equal to 120°. Specifically, β can be 120°, 110°, 100°, 90°, 80°, or other angles.

[0086] This arrangement ensures that the two brush arms 120 and the two bristles 130 are relatively concentrated on a portion of the periphery of the brush holder 110, while the other portion of the periphery of the brush holder 110 is not equipped with brush arms 120. This allows the brush holder 110 to rotate relative to the main body to different positions, so that the two bristles 130 can be effectively located within the edge projection area of ​​the main body to put the brush holder 110 in the installation position, or, some of the bristles 130 can be located outside the edge projection area of ​​the main body to put the brush holder 110 in the working position. Thus, without changing the original structure of the cleaning equipment, the side brush assembly 100 provided in this embodiment can be connected to the drive assembly. By reasonably defining the installation position of the brush holder 110 through the first installation indicator 111 and the second installation indicator, it can be ensured that when the brush holder 110 is in the installation position, the bristles 130 are located within the edge projection area of ​​the main body. By driving the brush holder 110 to rotate through the drive assembly, the installation position and working position of the brush holder 110 can be switched. The operation is simple and easy to implement.

[0087] As shown in Figures 6 and 7, in some possible embodiments provided in this disclosure, the brush arm 120 includes a first end 121 connected to the bristles 130. A protruding structure 122 is provided at the bottom of the first end 121, and the bristles 130 are arranged obliquely downwards from the first end 121 relative to the protruding structure 122. This arrangement ensures that the bristles 130 have sufficient interference force on the surface to be cleaned, guaranteeing a good cleaning effect. Simultaneously, this arrangement positions the protruding structure 122 below the portion where the bristles 130 are connected to the first end 121, preventing debris from moving or shifting downwards along the brush arm 120 towards the brush holder 110 from the lower direction of the first end 121. In other words, the protrusion structure 122 can restrict the movement of hair, thread, and other debris along the brush arm 120 from the first end 121 toward the brush holder 110. This reduces the likelihood of hair, thread, and other debris approaching the brush holder 110 and entering the drive assembly through the brush arm 120 and brush holder 110, thus causing drive assembly failure. This helps to extend the service life of the drive assembly and improve its reliability.

[0088] Specifically, the drive component can be a motor, and the brush holder 110 is connected to the output shaft of the motor. When the side brush assembly 100 is entangled with hair, thread, or other debris, if this debris winds upward along the circumferential sidewall of the brush holder 110 and onto the output shaft, the output shaft may become stuck, thus affecting the reliability of the motor. This application, through the provision of the protruding structure 122, can significantly reduce the occurrence of this situation, thereby extending the service life of the motor.

[0089] As shown in Figures 6 and 7, in some possible embodiments provided in this disclosure, the first end portion 121 includes a first portion 1211 and a second portion 1212. The first portion 1211 and the second portion 1212 are arranged vertically opposite each other, with the second portion 1212 located above the first portion 1211 and protruding from the first portion 1211 along the extending direction of the brush arm 120. The first portion 1211 is provided with a protruding structure 122 and connected to the bristles 130. The vertical direction is shown by arrow Z in Figure 7.

[0090] In other words, the second part 1212 is located above the bristles 130, and the protruding structure 122 is located below the bristles 130. This makes the second part 1212 form a baffle-like structure, preventing debris from moving along the bristles 130 towards the brush arm 120 from above. Therefore, by cooperating with the second part 1212 and the protruding structure 122, debris moving along the bristles 130 towards the brush arm 120 can be simultaneously stopped at the first end 121 from both above and below the bristles 130. This further limits the possibility of hair, thread, and other debris moving along the bristles 130 to the brush arm 120 via the first end 121, thus reducing the possibility of the brush arm 120 being entangled by hair or thread. This, in turn, reduces the likelihood of hair, thread, and other debris approaching the brush holder 110, and reduces the possibility of debris entering the drive assembly via the brush arm 120 and brush holder 110, potentially causing drive assembly failure. This, in turn, helps extend the service life of the drive assembly and improve its reliability.

[0091] As shown in Figures 6 and 7, in some possible embodiments provided in this disclosure, the second portion 1212 is inclined upward relative to the first portion 1211 in a direction away from the brush holder 110. That is, the gap between the second portion 1212 and the bristles 130 gradually increases from the direction away from the brush holder 110 to the direction closer to the brush holder 110. This arrangement guides the movement of debris along the bristles 130, allowing the debris to be smoothly contained in the gap between the second portion 1212 and the bristles 130, reducing the possibility of debris moving from above the second portion 1212 to the brush arm 120, and effectively preventing hair and thread-like debris from getting tangled in the brush arm 120.

[0092] As shown in Figure 4, in some possible embodiments provided in this disclosure, the brush arm 120 includes a second end 123 connected to the brush holder 110. The brush holder 110 is injection molded and wrapped around the second end 123. That is, the brush holder 110 and the brush arm 120 can be manufactured by injection molding. This ensures the reliability of the connection between the brush arm 120 and the brush holder 110, and at the same time, it is easy to process and easy to produce.

[0093] Furthermore, when the side brush assembly is installed in the cleaning device, the distance between the second end and the surface to be cleaned is greater than the distance between the first end and the surface to be cleaned.

[0094] Furthermore, both the brush arm 120 and the brush holder 110 are made of plastic, which is low in cost, easy to mold, convenient to process, and suitable for widespread application.

[0095] The brush holder 110 has a higher hardness than the brush arm 120. For example, the brush holder 110 is made of hard plastic, while the brush arm 120 is made of soft plastic. This ensures that the brush holder 110 has sufficient hardness and strength, while the brush arm 120 has sufficient strength and elasticity. Specifically, the elasticity of the brush arm 120 is greater than that of the brush holder 110.

[0096] As shown in Figure 5, in some possible embodiments provided in this disclosure, the brush arm 120 includes a first segment 124, a second segment 125, and a third segment 126 arranged sequentially along the direction from the brush base 110 to the bristles 130, wherein the first segment 124, the second segment 125, and the third segment 126 gradually become thinner. Along the direction perpendicular to the horizontal plane, the distance between the first segment 124, the second segment 125, the third segment 126 and the brush base gradually increases.

[0097] The segments 124, 125, and 126 gradually become thinner. This can be understood as the width of their projections in the horizontal plane gradually decreasing, or, conversely, the vertical dimensions of their projections in the horizontal plane gradually decreasing. Specifically, the width of the brush arm 120's projection in the horizontal plane can be represented by distance D in Figure 5, and the vertical dimension of the brush arm 120 can be considered as its dimension along the Z-axis.

[0098] This design ensures that the first segment 124, connected to the brush holder 110, has sufficient strength, allowing for a reliable connection between the brush holder 110 and the brush arm 120. Simultaneously, it ensures that the third segment 126, connected to the bristles 130, has sufficient elasticity, enabling the bristles 130 to provide sufficient contact force with the surface to be cleaned, ensuring a good cleaning effect. The second segment 125, located between the first segment 124 and the third segment 126, provides a transitional connection between them, allowing the strength of the brush arm 120 to gradually decrease and its elasticity to gradually increase from the first segment 124 to the third segment 126, ensuring that the brush arm 120 possesses both good strength and elasticity. It is understood that when the brush holder 110 rotates, the starting point of the deformation position of the brush arm 120 can be located at the second segment 125 of the brush arm 120.

[0099] An embodiment of the second aspect of this disclosure provides a cleaning device, including: a main body, and a side brush assembly 100 of any embodiment of the first aspect, wherein the side brush assembly 100 is located at the bottom of the main body. Since the cleaning device includes the side brush assembly 100 of any of the foregoing embodiments, it possesses all the technical effects of the aforementioned side brush assembly 100, which will not be elaborated upon here.

[0100] Furthermore, the cleaning device also includes a drive assembly connected to the brush holder 110 to drive the brush holder 110 to rotate.

[0101] In one example, the drive component is configured to drive the brush holder 110 to switch between an installed position and a working position to enable the side brush component 100 to assist in cleaning. That is, the drive component drives the brush holder 110 to rotate, thereby switching between the installed and working positions. Specifically, when the brush holder 110 is in the working position, some of the bristles 130 extend beyond the edge projection area of ​​the main body.

[0102] In another example, the cleaning device also includes a telescopic assembly connected to the brush holder 110 to drive the brush holder 110 to switch between an installation position and a working position. In the installation position, the bristles 130 are located within the projected edge area of ​​the main body, while in the working position, some of the bristles 130 are located outside the projected edge area of ​​the main body. That is, the telescopic assembly drives the brush holder 110 to extend or retract relative to the main body to switch between the installation and working positions. It is understood that in this case, the drive assembly is used to drive the brush holder 110 to rotate; for example, the drive assembly can drive the brush holder 110 to rotate when it is in the working position, or it can also drive the brush holder 110 to rotate when it is in the installation position.

[0103] This disclosure has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this disclosure to the described embodiments. Furthermore, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this disclosure, all of which fall within the scope of protection claimed by this disclosure. The scope of protection of this disclosure is defined by the appended claims and their equivalents.

Claims

1. A side brush assembly (100) for cleaning equipment, the side brush assembly (100) comprising: A brush holder (110) is configured to be connected to a drive assembly of the cleaning device so that the drive assembly drives the brush holder (110) to rotate; Brush arm (120), wherein when the side brush assembly includes a plurality of brush arms, the plurality of brush arms are non-uniformly distributed in the circumference of the brush holder; Brush bristles (130) are attached to one end of the brush arm (120) away from the brush base (110).

2. The side brush assembly according to claim 1, comprising a first brush arm and a second brush arm, wherein, The first brush arm has a first angle between its extension direction relative to the brush holder and the tangent of the brush holder, and the second brush arm has a second angle between its extension direction relative to the brush holder and the tangent of the brush holder, wherein the first angle and the second angle are not equal.

3. The side brush assembly according to claim 1, comprising a first brush arm and a second brush arm, wherein, The second brush arm is located on the first brush arm; when the side brush assembly (100) is installed on the cleaning device, the distance between the bristles of the first brush arm and the surface to be cleaned is greater than the distance between the bristles of the second brush arm and the surface to be cleaned.

4. The side brush assembly according to claim 3, wherein, The length of the bristles on the first brush arm is greater than the length of the bristles on the second brush arm.

5. The side brush assembly according to any one of claims 1 to 4, wherein, The brush arm (120) is spiral-shaped.

6. The side brush assembly according to claim 5, wherein, The brush arm (120) includes a first segment (124), a second segment (125), and a third segment (126) that are arranged sequentially and gradually become thinner along the direction from the brush base (110) to the bristles (130). The distance between the first segment (124), the second segment (125), the third segment (126) and the brush base gradually increases along the direction perpendicular to the horizontal plane.

7. The side brush assembly according to claim 5, wherein, The projection of the brush arm (120) on the horizontal plane is an involute.

8. The side brush assembly according to any one of claims 1 to 7, wherein, The brush arm (120) includes a first end (121) connected to the bristles (130). The first end includes a first part (1211) and a second part (1212). The second part (1212) and the first part (1211) are arranged vertically opposite each other. The second part (1212) is located above the first part (1211) and protrudes from the first part (1211) along the extension direction of the brush arm (120). The first part (1211) is provided with a protruding structure (122), and the bristles (130) are arranged obliquely downward from the first end (121) relative to the protruding structure (122).

9. The side brush assembly according to claim 8, wherein the second portion (1212) is inclined upward relative to the first portion (1211) in a direction away from the brush holder (110).

10. The side brush assembly according to any one of claims 1 to 9, wherein, The brush arm is a flexible component.

11. The side brush assembly according to any one of claims 1 to 10, wherein, The brush holder (110) has a connection hole (112) for connecting to the drive assembly. The side brush assembly also includes a connector, and the connection hole (112) has a hole segment for accommodating the connector.

12. The side brush assembly according to claim 2, wherein the bristles (130) extend along the tangential direction of the brush arm (120), and the included angle between the extension directions of the two bristles (130) is not greater than 120°.

13. The side brush assembly according to claim 12, wherein, The two brush arms (120) are located on the same side of the brush holder (110) through the midline of the axis of rotation of the brush holder (110).

14. The side brush assembly according to claim 11, wherein, The brush holder (110) is provided with a first installation indicator (111), and the drive assembly is provided with a second installation indicator. The first installation indicator (111) and the second installation indicator match to indicate that the brush holder (110) is in the installation position.

15. The side brush assembly according to claim 14, wherein, When the brush holder (110) is in the installation position, the orthographic projection of the brush bristles (130) on the horizontal plane is located within the orthographic projection area of ​​the edge of the main body of the cleaning device on the horizontal plane.

16. The side brush assembly according to claim 14, wherein, The first installation indicator (111) is disposed on the wall of the connecting hole (112); In this embodiment, one of the first mounting indicator (111) and the second mounting indicator is configured as a recess and the other is configured as a convex part.

17. The side brush assembly according to claim 16, wherein, The connecting hole (112) includes a first hole segment (1121) and a second hole segment (1122) along the axial direction of the brush holder (110). The first hole segment (1121) is located above the second hole segment (1122) and matches the drive assembly. The first installation indicator (111) is disposed in the first hole segment (1121), and the connector passes through the second hole segment (1122) and connects to the drive assembly.

18. The side brush assembly according to claim 17, wherein, The connecting hole (112) also includes a third hole segment (1123) located below the second hole segment (1122), and the end of the connector away from the drive assembly is accommodated in the third hole segment (1123).

19. The side brush assembly according to any one of claims 1-18, wherein, The brush arm (120) includes a second end (123) connected to the brush holder (110), the brush holder (110) being injection molded over the outside of the second end (123).

20. The side brush assembly according to claim 19, wherein, When the side brush assembly (100) is installed on the cleaning device, the distance between the second end and the surface to be cleaned is greater than the distance between the first end and the surface to be cleaned.

21. The side brush assembly according to any one of claims 1-20, wherein, The hardness of the brush holder (110) is greater than the hardness of the brush bristles (130).

22. The side brush assembly according to any one of claims 1-21, wherein, The cleaning device includes: the drive assembly configured to drive the brush holder (110) to switch between an installation position and a working position; or The cleaning device includes: the drive assembly and the telescopic assembly, wherein the telescopic assembly is connected to the brush holder (110) to drive the brush holder (110) to switch between the installation position and the working position.

23. The side brush assembly according to claim 22, wherein, The brush holder (110) is driven such that, when in the mounting position, the side brush assembly (100) can be retracted to the edge of the main body of the cleaning device within the projection area on the horizontal plane; and when in the working position, the bristles (130) can extend beyond the edge of the main body outside the projection area on the horizontal plane.

24. A cleaning device, comprising: The main body, and The side brush assembly (100) as claimed in any one of claims 1 to 23, the side brush assembly (100) being located at the bottom of the body.

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