Rotatable roll brush for a surface cleaning apparatus and self-propelled surface cleaning apparatus

Abstract

This disclosure provides a rotatable roller brush for a surface cleaning device, the roller brush including a brush body having an axis and a bristle belt, the bristle belt being carried on the brush body and extending along a body region and an end region of the brush body, wherein the bristle belt includes: a first bristle belt associated with the end region of the roller brush, the first bristle belt extending at a first angle to the longitudinal axis of the roller brush; and a second bristle belt associated with the body region of the roller brush, the second bristle belt extending at a second angle to the longitudinal axis of the roller brush; and the second bristle belt tending towards the first bristle belt; the first bristle belt and the second bristle belt forming an opening near the end. This disclosure also provides a self-moving surface cleaning device.

Description

Technical Field

[0001] This disclosure relates to a rotatable roller brush for surface cleaning equipment and a self-moving surface cleaning device. Background Technology

[0002] Self-moving surface cleaning devices, such as self-moving cleaning robots, can be equipped with rotating roller brushes to enhance cleaning performance. The roller brush includes a brush body, one end of which is mounted into a brush cavity, and the other end of which is mounted to a portion of a drive assembly. The roller brush can thus rotate within the brush cavity about its longitudinal axis under the drive assembly. The brush body carries multiple bristle belts. Each bristle belt includes several aligned bristles extending vertically away from the brush body. Each bristle belt is fixed in a V-shape or spiral configuration within a track defined by the brush body to provide a relatively dense and uniform arrangement of bristles or filaments to pick up particles or stains on the cleaning surface.

[0003] As agitated dust passes through the dirty air inlet, hair or thread can become entangled in the brush handle or its mounting. This can cause increased torque on the roller brush motor, and a significant buildup of entanglement on the roller brush can lead to bristle failure and reduced pickup performance. Typically, the roller brush can be removed from the brush chamber, allowing hair already entangled in it to be removed. However, removing hair by disassembling and reassembling the roller brush is cumbersome. Summary of the Invention

[0004] To address one of the aforementioned technical problems, according to one aspect of this disclosure, a rotatable roller brush for a surface cleaning device is provided. The roller brush includes a brush body having an axis and a bristle belt, the bristle belt being carried on the brush body and extending along a body region and an end region of the brush body. The bristle belt includes: a first bristle belt associated with the end region of the brush, the first bristle belt extending at a first angle to the longitudinal axis of the agitator; and a second bristle belt associated with the body region of the brush, the second bristle belt extending at a second angle to the longitudinal axis of the brush; and the second bristle belt tending towards the first bristle belt. The first and second bristle strips have openings near the ends.

[0005] According to one example of this disclosure, the first angle is a right angle and the second angle is a non-right angle.

[0006] According to one example of this disclosure, the first bristle strip and the second bristle strip are directly adjacent to each other.

[0007] According to one example of this disclosure, the first bristle strip and the second bristle strip are aligned in a row.

[0008] According to one example of this disclosure, the end region is offset from the center of the brush body.

[0009] According to one example of this disclosure, a bristle belt is received in a path disposed on a roller brush, the path being defined as a passage extending on the roller brush body.

[0010] According to one example of this disclosure, the first and second brush strips extend outward from the mixing body at the same longitudinal height.

[0011] According to one example of this disclosure, the brush includes blades spaced apart from the bristle belt, both of which are rotatable about the axis of the brush body.

[0012] According to one example of this disclosure, the blade is received in a track disposed on the roller brush, the track being defined as a path extending on the roller brush body.

[0013] According to one example of this disclosure, the blade is provided with a clearance opening that is adjacent to the opening in the circumferential direction of the brush body.

[0014] According to another aspect of this disclosure, a self-moving surface cleaning device is provided, comprising: main body; Side brush assembly located on the front side of the main body; A cleaning head assembly located at the bottom of the main body, wherein the end region of the cleaning head assembly is adjacent to the side brush assembly; The cleaning head assembly includes: A rotatable roller brush includes a roller brush body having an axis and a bristle belt, the bristle belt being carried on the roller brush body and extending along a body region and an end region of the roller brush body, wherein the bristle belt includes: a first bristle belt associated with the end region of the roller brush, the first bristle belt extending in a direction substantially perpendicular to the longitudinal axis of the roller brush; and a second bristle belt associated with the body region of the roller brush, the second bristle belt extending in a direction at an acute angle to the longitudinal axis of the roller brush, and the second bristle belt tending towards the first bristle belt; The first bristle strip and the second bristle strip form an opening at their adjacent positions; When the self-moving surface cleaning device is in operation, at least a portion of the first brush bristle belt interferes with the side brush assembly.

[0015] According to one example of this disclosure, the side brush assembly includes a side brush body capable of rotating about an axis, at least one bristle extending outward from the side brush body, the side brush body driving the bristle to rotate to form a sweeping surface, the sweeping surface passing through the first bristle band.

[0016] According to one example of this disclosure, the first bristle strip and the second bristle strip are directly adjacent to each other.

[0017] According to one example of this disclosure, it includes blades circumferentially spaced from the bristle band.

[0018] According to one example of this disclosure, the blade is provided with a clearance opening adjacent to the opening. Attached Figure Description

[0019] The accompanying drawings illustrate exemplary examples of this disclosure and, together with its description, serve to explain the principles of this disclosure. These drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this specification.

[0020] Figure 1 A schematic diagram of a rotatable roller brush according to one aspect of this disclosure is shown.

[0021] Figure 2 A schematic diagram of a rotatable roller brush according to one aspect of this disclosure is shown from another angle, illustrating vertical and inclined bristle bands.

[0022] Figure 3 A schematic diagram of a rotatable roller brush according to one aspect of this disclosure is shown from another angle.

[0023] Figure 4 A schematic diagram of the side of a rotatable roller brush according to one aspect of this disclosure is shown.

[0024] Figure 5 This is a schematic diagram of the chassis of a self-moving surface cleaning device according to one aspect of this disclosure.

[0025] Figure 6 A schematic diagram of a rotatable roller brush according to one aspect of this disclosure is shown from another angle, illustrating the blade clearance opening. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0027] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0029] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0030] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0031] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0032] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0033] When picking up dirt from floors or carpets, thin, long objects, such as strings or hair, can easily get tangled in the roller brush of surface cleaning equipment. If this tangled hair is not cleaned regularly, it will reduce the cleaning ability of the roller brush and may also damage the roller brush drive motor.

[0034] The disclosed solution involves setting the bristle band on the roller brush to a first part extending perpendicularly to the roller brush body and a second part extending inclined to the roller brush body, with an opening formed between the first and second parts. Under the action of Archimedes' spiral force, the slender entangled material moves toward the opening and falls off at the opening, and is eventually sucked up by the vacuum suction port. In addition, the first bristles of the roller brush on the side of the surface cleaning device are vertically planted, making it easier to roll up the hair on the side brush assembly and suck it into the vacuum suction port, while improving the edge cleaning ability.

[0035] according to Figure 1 As shown, the roller brush 10 according to this disclosure includes a roller brush body 12, which is elongated and has an axis. The roller brush body 12 carries strips having a plurality of bristles, hereinafter referred to as bristle strips 14, which extend along the outer surface of the roller brush body 12 in a generally helical or V-shaped path. In this specific example, the roller brush body 12 carries two bristle strips 14, which are circumferentially spaced at 180° apart. It should be understood that the roller brush 10 may carry more or fewer bristle strips as needed. Furthermore, uniform spacing is not required, and if desired, the bristle strips 14 may be unevenly spaced around the outer surface of the roller brush 10.

[0036] Each bristle band 14 is received and held in a corresponding path 16 defined by the roller brush body 12. In one example of this disclosure, two such paths 16 are provided, corresponding to a corresponding one of the bristle bands 14. Each path 16 extends from one end of the roller brush to its other end. In this example, the roller brush is formed of a polymer material.

[0037] Each bristle band comprises multiple bundles of aligned bristles 18 arranged in a continuous longitudinal configuration to form the main agitation component of the roller brush. In the bristle band 14, portions of the bristles 18 extend vertically away from the roller brush body 12, although some slight deviation from the vertical direction may be expected in practice. The bristle band 14 is secured in corresponding paths 16. Each path 16 is provided by a longitudinally extending channel defined within the outer surface of the roller brush 10.

[0038] Depend on Figure 1 and 2 It can be seen that a portion of the bristle band is effectively angled towards the end along the longitudinal axis L of the roller brush. In other words, the end of the bristle band 14 has an inclined extension towards the end. This increases the anti-tangling capability of the roller brush 10 of this disclosure. An example of a roller brush configuration that achieves this effect will now be described further.

[0039] For the purpose of explanation, combined with Figure 1 The roller brush body 12 can be considered to include a central region 20 and an end region 22. In this example, the central region 20 and the end region 22 of the roller brush body 12 are not separate components, but are defined by their proximity to the ends; the central region and the end region are not mechanically strictly divided. It is understood that the central region is closer to the vacuum inlet than the end region. In other examples, the end region 22 may be connected to the central region as a separate accessory.

[0040] End region 22, such as Figure 1 and 5 As shown, this is near the mounting end of the roller brush within the roller brush cavity. In another example, end region 22 is near the mounting side of the side brush assembly 64 of the self-moving surface cleaning device.

[0041] like Figure 3 As shown, the end region 22 includes a path segment 16b aligned with a corresponding path segment 16a of the central region 20 of the roller brush body 12, resulting in a continuous path 16 extending from one end of the roller brush 10 to the other. In one example, the path segment 16a on the central region 20 of the roller brush 10 includes a V-shaped inflection point O located at the angled bristle portion 14b, facilitating the pickup and agglomeration of particles from the cleaning surface. However, the V-shape is not mandatory; in one example, the tracks of the vertical bristle portion 14a and the angled bristle portion 14b together form a spiral on the surface of the roller brush body 12. In contrast, the path segment 16b defined by the end region 22 is generally linear, having a substantially constant radial distance from the longitudinal axis L to maintain the sweeping amplitude of the roller brush bristle band.

[0042] like Figure 2 and 3As shown, path segments 16a and 16b comprise two adjacent portions at the junction of end region 22 and central region 20, and they are associated with corresponding vertical bristle portions 14a and slanted bristle portions 14b of the bristle band 14. The vertical bristle portion 14a on the roller brush 10 has a verticality (an extension angle of approximately 90° relative to the longitudinal axis of the roller brush) to ensure particle pickup capability in the end region of the roller brush. The vertical bristle portion 14a extends approximately 20%-35% of its length along the axial direction on the roller brush body. At the adjacent position, the vertical bristle portion 14a transitions into the slanted bristle portion 14b, which has an inclination (an inclination of approximately 15-45 degrees relative to the longitudinal axis of the roller brush) and is inclined toward the vertical bristle portion 14a.

[0043] This change in tilt causes the free ends of the bristles associated with the tilted portion (across the central region 20 from the other end region 22' of the roller brush) to point towards the end region 22, thereby guiding elongated particles (e.g., hairs) in that region to adjacent positions through the action of Archimedean spiral forces as the roller brush rotates. In this specific example, the tilt of the tilted bristle portion 14b is approximately 30 degrees relative to the longitudinal axis of the roller brush, resulting in the bristles defining an angle of approximately 30 degrees about the longitudinal axis of the roller brush. A larger tilt angle is acceptable, but this would result in bristles with higher perpendicularity, at the cost of reduced guiding ability for elongated particles.

[0044] Because the end region 22 is provided with an inclined bristle portion 14b, if the inclined bristle portion 14b and the vertical bristle portion 14a have the same length, the radial distance from the free end of the inclined bristle portion 14b to the longitudinal axis is lower than that of the vertical bristle portion 14a due to the inclination of the inclined bristle portion 14b. In other words, overall, the rotation diameter of the roller brush with the inclined bristle portion 14b converges towards the longitudinal axis. Therefore, as... Figure 2 and 4 As shown, in order to ensure high cleaning efficiency of the roller brush and maximize the cleaning range of the agitator, this should be achieved by configuring the inclined bristle portion 14b to have an increased reach distance compared to the vertical bristle portion 14a. That is, the bristle length of the inclined bristle portion 14b is longer than the bristle length of the vertical bristle portion 14a, so that the outer diameter of the bristles of the roller brush is consistent throughout, thereby maintaining the consistency of the outer diameter of the roller brush rotation and ensuring that the roller brush has a sufficient sweeping range.

[0045] Figure 2A bristle belt 14, mounted on a roller brush 10, is shown. An inclined bristle portion 14b of the bristle belt 14 extends from one end region 22' of the roller brush along the central region 20 to the end region 22, and abuts against a vertical bristle portion 14a at the end region 22, forming an opening 40 at this abutment. That is, there is an angular difference between the vertical bristle portion 14a and the inclined bristle portion 14b, thus forming an open opening 40 at their abutment. During roller brush rotation, elongated particles (e.g., hairs) on the inclined bristle portion 14b move to the opening 40 and detach under the action of Archimedean spiral force, and are sucked into the vacuum suction port under the action of vacuum force. Because the vertical bristle portion 14a has a shorter extension distance in the longitudinal axis of rotation, it also detaches from the opening 40 before elongated particles become entangled, thus ensuring anti-entanglement performance while ensuring sufficient dirt pickup capability.

[0046] In one example of a roller brush mounted on a surface cleaning device, the free end of the vertical bristle portion 14a interferes with the side brush assembly 64 of the surface cleaning device. The vertical bristle portion 14a is guaranteed to have sufficient extension to pick up elongated particles on the side brush assembly 64.

[0047] Specifically, such as Figure 5 In one example of a self-moving surface cleaning device 60, the self-moving surface cleaning device 60 includes a chassis 62 and at least one drive wheel (not shown) mounted on the chassis 62 for propelling the self-moving surface cleaning device 60 across a surface.

[0048] In one example of this disclosure, a roller brush is mounted on a chassis 62 and protrudes from the outer surface of the bottom of the chassis 62. When the self-moving surface cleaning device 60 is advanced, the roller brush can be driven to rotate, thereby cooperating to pick up debris and guide it into the vacuum suction port of the self-moving surface cleaning device 60.

[0049] The self-moving surface cleaning device 60 disclosed herein includes a side brush assembly 64, which is further mounted on a chassis 62 near the front side. In some examples, the side brush assembly 64 includes at least one bundle of bristles 66 extending downward from a side brush body 65. The side brush body 65 is rotatable about an upwardly extending axis below the chassis 62 adjacent to the side of the chassis 62 to form a sweeping surface D to pick up particles from the outside of the chassis through the bristles 66 into the interior of the chassis 62.

[0050] The side brush assembly 64 includes an arm 67 extending from the side brush body 65 and bristles 66 connected to the free end of the arm 67. The bristles 66 are fibrous and may be made of synthetic or natural fibers. As the side brush body 65 rotates, the bristles 66 pick up debris in areas hard to reach outside the chassis 62 (such as corners and around furniture), and with further rotational oscillation, guide the debris into the roller brush for recycling to the vacuum suction port.

[0051] In one example, the sweeping surface D formed by the bristles 66 interferes with the vertical bristle portion 14a of the roller brush to facilitate the removal of elongated particles (e.g., hair) from the bristles 66. That is, when the bristle assembly is entangled with elongated particles in a hard-to-reach area outside the chassis 62 and returns to the roller brush, the rotation of the roller brush allows the end of the vertical bristle portion 14a to peel the entangled elongated particles from the bristles of the side brush assembly 64 and directly or through the opening 40 into the vacuum suction port.

[0052] In all the examples above, the brush is elongated and has a generally cylindrical outer surface. Of course, it is possible for the brush to have other cross-sections. In the examples above, end region 22 has been described as an integral part of the brush. However, it should be understood that end region 22 can replace the terrain as a separately processed unit.

[0053] In another example, the roller brush includes other agitating components besides bristles, such as... Figure 6 As shown, other agitation components include blades 70 extending longitudinally along the agitator body. The blades 70 define a track 71 around the roller brush body 12 from end region 22' to end region 22. This track 71 may be helical or V-shaped, and the path of one or more rows of bristle bands 14 remains substantially parallel to the track of the blades 70 on the outer circumferential surface of the roller brush body 12. Specifically, the bristle bands 14 extend adjacent to the blades 70, allowing for variable distances between the bristle bands 14 and adjacent blades 70. This can result in improved cleaning and reduced hair and debris entanglement around the roller brush body 12.

[0054] In one example of this disclosure, the blade 70 is provided with a relief opening 72 at the position corresponding to the opening 40 of the brush band 14 (i.e., the adjacent position of the vertical portion and the inclined portion), which is recessed into the surface of the roller brush body 12. When slender particles move to the relief opening 72 along the longitudinal axis of the roller brush, it is convenient for the slender particles to detach from the roller brush and be sucked in by the vacuum suction port.

[0055] The clearance opening 72 corresponds to the position of the opening 40, thereby better reducing the support force of fine particles such as hair on the roller brush, thus forming a loose and easy-to-fall-off state, which is then sucked into the vacuum suction port; or, before the hair has formed a tangled state, it is sucked into the vacuum suction port through the clearance opening 72 and the opening 40.

[0056] Corresponding to the shape of the opening 40, to further facilitate the removal of elongated particles from the brush blades 70, the forming edge angle of the clearance opening 72 of the blades should be substantially consistent with the shape of the opening. In one example, the clearance opening 72 includes a first edge 72a adjacent to the vertical bristle portion 14a and a second edge 72b adjacent to the inclined bristle portion 14b. The arrangement of the first edge 72a and the second edge 72b should facilitate the removal of elongated particles from the corresponding positions of the clearance opening 72 and the opening 40. In one example, the first edge 72a maintains the same angle as the first edge 72a, and the second edge 72b maintains a larger angle of inclination compared to the first edge 72a. In one example, the first edge 72a is approximately perpendicular to the longitudinal axis of the brush, and the second edge 72b forms a gentle slope along the direction of particle movement to create a transition line on the second edge 72b. This facilitates a gradual decrease in support for the entangled elongated particles as they move towards the bottom of the clearance opening 72, preventing the elongated particles from being intercepted by the second edge 72b and thus preventing them from being removed.

[0057] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. A rotatable roller brush for a surface cleaning device, the roller brush comprising a brush body having an axis and a bristle belt, characterized in that, The bristle band is supported on the roller brush body and extends along the main body area and end area of ​​the roller brush body. The brush band includes: a first brush band associated with the end region of the roller brush, the first brush band extending at a first angle to the longitudinal axis of the agitator; and a second brush band associated with the body region of the roller brush, the second brush band extending at a second angle to the longitudinal axis of the roller brush; and the second brush band tending towards the first brush band. The first and second bristle strips have openings near the ends.

2. The rotatable roller brush according to claim 1, characterized in that, The first angle is a right angle, and the second angle is a non-right angle.

3. The rotatable roller brush according to claim 1, characterized in that, The first bristle band and the second bristle band are directly adjacent to each other.

4. The rotatable roller brush according to claim 1, characterized in that, The first and second brush strips are aligned in a row.

5. The rotatable roller brush according to claim 1, characterized in that, The end region is offset from the center of the brush body.

6. The rotatable roller brush according to claim 1, characterized in that, The bristle belt is received in a path provided on the roller brush, the path being defined as a passage extending on the roller brush body.

7. The rotatable roller brush according to claim 1, characterized in that, The first and second brush strips extend outward to the same longitudinal height from the mixing body.

8. The rotatable roller brush according to any one of claims 1-7, characterized in that, Includes blades spaced apart from the bristle belt, both of which are rotatable about the axis of the roller brush body; Alternatively, the blades are received in a track disposed on the roller brush, the track being defined as a path extending on the roller brush body; Optionally, the blade is provided with a clearance opening, which is adjacent to the opening in the circumferential direction of the brush body.

9. A self-moving surface cleaning device, characterized in that, include: main body; Side brush assembly located on the front side of the main body; A cleaning head assembly located at the bottom of the main body, wherein the end region of the cleaning head assembly is adjacent to the side brush assembly; The cleaning head assembly includes: A rotatable roller brush includes a brush body with an axis and a bristle belt, the bristle belt being carried on the brush body and extending along the body area and end area of ​​the brush body. The brush band includes: a first brush band associated with the end region of the roller brush, the first brush band extending at a substantially right angle to the longitudinal axis of the roller brush; and a second brush band associated with the main body region of the roller brush, the second brush band extending at an acute angle to the longitudinal axis of the roller brush, and the second brush band tending towards the first brush band. The first bristle strip and the second bristle strip form an opening at their adjacent positions; When the self-moving surface cleaning device is in operation, at least a portion of the first brush bristle belt interferes with the side brush assembly.

10. The self-moving surface cleaning device according to claim 9, characterized in that, The side brush assembly includes a side brush body capable of rotating about an axis, at least one bristle extending outward from the side brush body, the side brush body driving the bristle to rotate to form a sweeping surface, the sweeping surface passing through the first bristle band; Optionally, the first bristle strip and the second bristle strip are directly adjacent to each other; Optionally, it includes blades that are circumferentially spaced from the bristle band; Optionally, the blade is provided with a clearance opening, which is adjacent to the opening.

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