Self-propelled surface cleaning robot
By employing asymmetrically arranged side brush components in a self-moving surface cleaning robot, the problems of hair entanglement and low cleaning efficiency are solved, resulting in more efficient cleaning coverage and stable equipment operation, thus improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU XIAOSHUN TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-16
AI Technical Summary
The side brush components of traditional household vacuum cleaners are prone to getting tangled with hair, which increases rotational resistance, shortens battery life, and reduces cleaning efficiency. In addition, traditional side brushes cannot effectively clean debris directly under the main roller brush, limiting the cleaning coverage.
Design a self-moving surface cleaning robot that employs an asymmetrically arranged side brush assembly, including a hub, two arms, and bristle bundles. The arms are tilted in the opposite direction of rotation, and the cross-sectional area of the free section is larger than that of the connecting section. The bristle bundles are spaced apart from the protrusions to reduce the risk of friction and entanglement, ensuring that the cleaning covers the area below the main roller brush.
It reduces the risk of brush bristle wear and tangling, improves cleaning efficiency, ensures comprehensive cleaning coverage and stable equipment operation, reduces maintenance needs, and enhances the user experience.
Smart Images
Figure CN224357519U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to a self-moving surface cleaning robot. Background Technology
[0002] Household vacuum cleaning equipment is used to clean a room by sucking up particles such as dust from the floor.
[0003] Generally, household vacuum cleaning equipment includes a side brush assembly. The rotation of the side brush assembly agitates the dust on the surface to be cleaned, and the cleaning operation is achieved by the sweeping assembly located behind the side brush assembly.
[0004] However, when the side brush assembly rotates, it often gets tangled with long, thin objects such as hair, increasing the rotational resistance of the side brush assembly and also resulting in a shorter battery life for household vacuum cleaning equipment. Moreover, these hairs tangled in the side brush assembly are difficult to remove.
[0005] In existing technologies, a single side brush is generally used to address the problem of hair entanglement in the side brush assembly. However, side brush assemblies with only one side brush have low cleaning efficiency, and the assembly can deform after long-term use, leading to a further reduction in cleaning efficiency. Utility Model Content
[0006] This disclosure provides a self-moving surface cleaning robot.
[0007] According to one aspect of this disclosure, a self-moving surface cleaning robot is provided, comprising:
[0008] The robot comprises: a main body for walking on the floor to remove dirt and form an exterior; a side brush assembly whose axis of rotation is located near the side of the self-moving surface cleaning robot; and a motor for rotating the side brush assembly about the axis of rotation. The side brush assembly includes: a hub configured to engage with the motor of the self-moving surface cleaning robot; two arms, each extending outward from a direction away from the axis of rotation of the side brush assembly, each arm angled relative to a plane perpendicular to the axis of rotation of the side brush assembly; wherein the two arms are configured to be spaced apart and inclined on the semicircular side of the hub, the inclination direction being opposite to the unidirectional rotation direction of the hub; each arm includes a connecting section extending outward from the hub away from the axis of rotation and a free section extending outward from the connecting section away from the axis of rotation, and the cross-sectional area of the free section is larger than the cross-sectional area of the connecting section; and two bristle bundles, each bristle bundle being connected to one of the two arms and extending outward from one of the two arms.
[0009] According to one example of this disclosure, the connecting segment is configured to connect the arm to the hub, and the free segment is configured to connect the bristle bundle.
[0010] According to one example of this disclosure, the connecting segment is mounted on the hub at an angle, the direction of the angle being opposite to the unidirectional rotation direction of the hub.
[0011] According to one example of this disclosure, the free segment includes: an end face for connecting the bristle bundle;
[0012] The bristle bundles and protrusions extend outward from the end face, with the protrusions located on the side of the bristle bundle opposite to the unidirectional rotation direction.
[0013] According to one example of this disclosure, the protrusions and the bristle bundles are spaced apart, and when the axis of rotation of the hub is orthogonal to the horizontal plane, the projections of the protrusions and the bristle bundles on the horizontal plane do not coincide.
[0014] According to one example of this disclosure, the free segment includes a gradient portion located below the free segment.
[0015] According to one example of this disclosure, the gradient portion includes an inclined surface facing the unidirectional rotation direction of the hub.
[0016] According to one example of this disclosure, the free segment of each arm is tilted relative to the connecting segment of each arm in a direction opposite to the rotation direction of the brush assembly.
[0017] According to one example of this disclosure, the angle between the connecting segment of each arm and the plane is greater than the angle between the free segment of each arm and the plane.
[0018] According to another aspect of this disclosure, a self-propelled surface cleaning robot is provided, comprising: a robot body; a side brush assembly disposed on the robot body; and a drive motor for driving the side brush assembly to rotate about a rotation axis; wherein the side brush assembly includes: a hub configured to be connected to the drive motor; two arms, each arm including a connecting end connected to the hub and a free end opposite to the connecting end, such that each arm extends outward from the hub in a direction away from the rotation axis; and each arm is relative to a rotation axis perpendicular to the side brush assembly. The plane is angled; the two arms are configured to be inclined at intervals on the semicircular side of the hub, the inclination direction being opposite to the unidirectional rotation direction of the hub, and the cross-sectional area of the free end is larger than the cross-sectional area of the connecting end; a bristle bundle is attached to the free end of each arm and extends outward from the free end of the arm; and a protrusion is formed at the free end of each arm and extends outward from the free end of the arm; the protrusion and the bristle bundle are spaced apart on the free end, and when the rotation axis of the hub is orthogonal to the horizontal plane, the projections of the protrusion and the bristle bundle on the horizontal plane do not coincide. Attached Figure Description
[0019] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.
[0020] Figure 1 This is a structural schematic diagram of a self-moving surface cleaning robot according to one embodiment of the present disclosure.
[0021] Figure 2 This is a structural schematic diagram of a self-moving surface cleaning robot according to one embodiment of the present disclosure from another angle.
[0022] Figure 3 This is a schematic diagram of the side brush assembly of a self-moving surface cleaning robot according to one embodiment of the present disclosure.
[0023] Figure 4 This is a structural schematic diagram of the side brush assembly of a self-moving surface cleaning robot according to one embodiment of the present disclosure from another angle. Detailed Implementation
[0024] 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.
[0025] 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.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] 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.
[0031] Traditional side brushes used in autonomous cleaning robots face several technical challenges that impact their performance and lifespan. One issue is the symmetrical arrangement of the brush arms, which are typically evenly distributed around the rotating hub. This configuration increases the contact area with the cleaning surface, leading to excessive friction and accelerated bristle wear. Over time, this wear reduces cleaning efficiency, necessitating frequent side brush replacements. Another challenge is that flexible debris such as hair or lint can easily become entangled in the brush arms and move towards the rotating hub, potentially tangling the drive shaft and causing motor stalling or damage. Furthermore, traditional side brushes often fail to effectively clean debris directly beneath the main roller brush without affecting its operation, thus limiting the robot's ability to achieve comprehensive cleaning coverage across its entire width. These challenges collectively result in decreased cleaning performance, increased maintenance requirements, and reduced user satisfaction.
[0032] This disclosure provides a side brush for an autonomous cleaning robot, comprising a hub, two arms, and two bristle tufts, configured to address identified challenges. The hub is operatively connected to a motor of the autonomous cleaning robot, enabling unidirectional rotation about a rotation axis. The two arms extend outward from the hub, away from the rotation axis, and are located on a semi-circular side of the housing. Each arm is tilted relative to the normal plane of the rotation axis in the opposite direction to the unidirectional rotation of the housing. This asymmetrical tilting arrangement reduces the contact area with the cleaning surface, thereby minimizing friction and bristle wear. Each arm includes a connecting section for securing the arm to the hub and a free section for supporting the bristle tufts. The connecting section has a larger angle relative to the normal plane than the free section, allowing the bristle tufts to contact the cleaning surface while the hub remains elevated to avoid obstacles. The free section has a larger cross-sectional area than the connecting section, providing structural stability and a wider bristle tuft mounting surface. The bristle tufts extend outward from the free section, sweeping debris toward the main roller brush. In some embodiments, the end face of the free section has a protrusion that maintains a certain distance from the bristle tuft to reduce debris entanglement. This configuration allows the side brush to sweep away debris undisturbed, including the area below the main roller brush, while reducing the risk of wear and entanglement.
[0033] Figure 1 This is a structural schematic diagram of a self-moving surface cleaning robot according to one embodiment of the present disclosure. Figure 2 This is a structural schematic diagram of a self-moving surface cleaning robot according to one embodiment of the present disclosure from another angle.
[0034] like Figure 1 and Figure 2 As shown, the self-moving surface cleaning robot disclosed herein can be a sweeping robot, a mopping robot, a self-moving surface cleaning robot, or a sweeping and mopping robot, etc. Among them, the self-moving surface cleaning robot can move autonomously on the surface to be cleaned to clean the surface by picking up particles located on different parts of the surface to be cleaned.
[0035] by Figure 1 and Figure 2 Taking the self-moving surface cleaning robot shown as an example, let's consider the robot's forward direction as "forward". Figure 2 In the view orientation, the self-propelled surface cleaning robot's forward direction is upward to one side. The direction away from the self-propelled surface cleaning robot's forward direction is backward, as shown in the reference. Figure 2 In the view direction, "rear" for a self-propelled surface cleaning robot refers to the side below. Correspondingly, the direction perpendicular to the front-back direction can be defined as the left-right direction.
[0036] The self-propelled surface cleaning robot may include a chassis assembly 100, which can be formed as the body of the self-propelled surface cleaning robot. The bottom of the chassis assembly 100 is provided with steering wheels 400 and driving wheels 500. The steering wheels 400 are used to control the direction of travel of the self-propelled surface cleaning robot, and the driving wheels 500 are used to drive the self-propelled surface cleaning robot forward. The steering wheels 400 are located at the front of the chassis assembly 100.
[0037] like Figure 2 As shown, the present disclosure provides two walking wheels 500, which are located approximately at the center of the chassis assembly 100 in the front-rear direction and on both sides of the chassis assembly 100 in the left-right direction. Furthermore, one steering wheel 400 is provided, which can be a caster wheel. This caster wheel is positioned at the center of the self-moving surface cleaning robot in the left-right direction and near the front end of the self-moving surface cleaning robot. Of course, the present disclosure also provides two or more steering wheels 400.
[0038] In actual use, the walking wheels 500 can be driven and rotated. By controlling the walking wheels 500 to rotate at a constant speed, the self-moving surface cleaning robot can move forward. Correspondingly, by controlling the walking wheels 500 to rotate at different speeds, the self-moving surface cleaning robot can turn.
[0039] In addition, a cleaning component 300 is also provided on the chassis assembly 100. The cleaning component 300 is located at the middle position in the front-rear direction of the chassis assembly 100, and its length direction is the width direction of the chassis assembly 100. More specifically, the cleaning component 300 can be a roller brush, which is rotatably connected to the chassis assembly 100, and the axis of rotation of the roller brush is parallel to the surface to be cleaned, such as parallel to the ground.
[0040] In this disclosure, the chassis assembly 100 is further provided with a side brush assembly 200, wherein the side brush assembly 200 can be configured as one or two; Figure 2 In the implementation shown, the side brush assembly 200 is configured as one, and the side brush assembly 200 is positioned on the right side of the front end of the chassis assembly 100; thereby, by rotating the side brush assembly 200, dirt on the surface to be cleaned can be disturbed, and the surface to be cleaned can be cleaned.
[0041] The side brush assembly 200 (which extends beyond the outer periphery of the robot and is unidirectionally rotatable in the direction of rotation) sweeps dirt particles outside the outer periphery of the self-moving surface cleaning robot toward the cleaning assembly 300 on the underside of the robot. For example, the side brush assembly 200 sweeps debris toward the area in front of the robot or sweeps debris into the projected cleaning path of the self-moving surface cleaning robot. During obstacle following motion, as the self-moving surface cleaning robot travels along the periphery of an obstacle and its side tracks the obstacle, the side brush assembly 200 sweeps debris along the obstacle. The side brush assembly 200 is rotatable to sweep the surface to be cleaned and propel debris toward the roller brush. The side brush assembly 200 rotates about the axis of rotation O. As described herein, the side brush assembly 200 is capable of sweeping a portion of the surface to be cleaned below the roller brush while the roller brush rotates to pick up dirt particles from the surface to be cleaned. This allows the roller brush to extend along a larger portion of the total width of the self-moving surface cleaning robot without interfering with the operation of the roller brush and the side brush assembly 200 during autonomous cleaning operations. The side brush assembly 200 extends outwards from and away from the bottom surface of the self-moving surface cleaning robot. The side brush assembly 200 is mounted to a motor of the self-moving surface cleaning robot, which is operatively connected to a controller. By being positioned such that at least a portion of the side brush assembly 200 extends beyond the contour of the robot body, the side brush assembly 200 can easily access and contact debris on the ground surface outside the area directly below the self-moving surface cleaning robot. The side brush assembly 200 can be mounted to a drive shaft connected to a motor that drives the side brush assembly 200.
[0042] Figure 2 The diagram shows the specific structure when the cleaning component is a roller brush. The rotation axis of the roller brush is parallel to the surface to be cleaned. When the roller brush rotates, it can clean the surface to be cleaned.
[0043] Thus, the rotating roller brush of the cleaning component 300 can agitate the dirt on the surface to be cleaned. This dirt can be sucked into the dust box or other device by negative pressure adsorption, and the solid particles are separated in the dust box or other device, thereby achieving the cleaning operation of the surface to be cleaned.
[0044] In this disclosure, the chassis assembly 100, steering wheels 400, and walking wheels 500 can form the robot body.
[0045] Figure 3 This is a schematic diagram of the side brush assembly of a self-moving surface cleaning robot according to one embodiment of the present disclosure. Figure 4 This is a structural schematic diagram of the side brush assembly of a self-moving surface cleaning robot according to one embodiment of the present disclosure from another angle.
[0046] The side brush assembly 200 of this disclosure is disposed on the robot body and can be driven by a drive motor, so that the side brush assembly 200 can rotate relative to the chassis assembly 100 of the robot body. Although not illustrated in this disclosure, those skilled in the art should understand that the drive motor can be directly or indirectly fixed to the chassis assembly 100, and the drive motor can include an output shaft having a vertical axis of rotation (i.e., a rotation axis perpendicular to the surface to be cleaned). In this case, the side brush assembly 200 can be directly fixed to the output shaft of the drive motor, so that the drive motor can drive the side brush assembly 200 to rotate about the rotation axis. In another embodiment, the drive motor can be connected to a gearbox, in which case the gearbox has an output shaft having a vertical axis of rotation (i.e., a rotation axis perpendicular to the surface to be cleaned). The side brush assembly 200 can be directly fixed to the output shaft of the gearbox, so that the drive motor can drive the side brush assembly 200 to rotate about the rotation axis. More preferably, the rotation axis is substantially perpendicular to the surface to be cleaned.
[0047] Figure 3 One embodiment of a side brush assembly 200 is described. This embodiment is described with respect to the X-axis, Y-axis, and Z-axis. The rotation axis O of the side brush assembly 200 is parallel to the Y-axis. As described herein, in some cases, the Y-axis is parallel to a vertical axis extending perpendicular to the ground surface, although in other embodiments, the Y-axis forms a non-zero angle with the vertical axis.
[0048] The side brush assembly 200 is a side brush assembly for a self-moving surface cleaning robot, including a hub 210, two arms 220A and 220B, and two bristle bundles 230A and 230B. In the example of this disclosure, the side brush assembly 200 is generally asymmetrical about the axis of rotation O. The hub 210 is configured to engage with the motor of the self-moving surface cleaning robot. The side brush assembly 200 is mounted such that when the side brush assembly 200 rotates about the axis of rotation O, it can sweep a portion of the ground surface below the robot and propel debris on the ground surface toward the cleaning assembly 300. The portion of the ground surface swept by the side brush assembly 200 also includes at least one portion directly below the cleaning assembly 300. As described herein, the hub 210, arms 220A and 220B, and bristle bundles 230A and 230B are configured to enable the side brush assembly 200 to sweep the area below the cleaning assembly 300 without interfering with the operation of the cleaning assembly 300.
[0049] refer to Figure 3 and Figure 4 The hub 210 includes a hemispherical portion 210A having a circular cross-section, for example, along a plane perpendicular to the axis of rotation O. The hub 210 is configured to engage a motor of a self-moving surface cleaning robot. For example, as... Figure 3As shown, the hub 210 includes a square bore 210B, the size and dimensions of which are adapted to engage the drive shaft. When the square bore 210B engages with the drive shaft, torque can be transmitted from the motor to the hub 210, enabling the motor to rotate the side brush assembly 200. The height of the hub 210 is defined by the lowest point of the arms 220A and 220B attached to the hub 210 and the highest surface of the square bore 210B.
[0050] The hub 210, arms 220A and 220B, and bristle bundles 230A and 230B can be made of different materials. For example, the hub 210 is a single plastic component, and the arms 220A and 220B, bristle bundles 230A and 230B, or both, extend from the hub 210. The hub 210 is made of a rigid polymer material, and the arms 220A and 220B are made of an elastomer material. The arms 220A and 220B are more deformable than the hub 210, acting as support and cushioning for the bristle bundles 230A and 230B, maintaining the concentration of the bristles, and deforming in response to contact with ground surfaces and obstacles to prevent damage to the bristle bundles 230A and 230B.
[0051] In some examples, bristle bundles 230A and 230B are composed of multiple flexible fibers. Each bristle bundle 230A and 230B extends from the end face 222B of the free segment 222 of arms 220A and 220B and terminates at a distal end. Bristle bundles 230A and 230B extend from arms 220A and 220B along an axis parallel to the extension of the free segment 222. The length of bristle bundles 230A and 230B extending beyond arms 220A and 220B is greater than 45 mm (e.g., 46 mm). The bristle bundle is the straight-line length from the free end 222A of arms 220A and 220B to the distal end of bristle bundles 230A and 230B.
[0052] refer to Figure 3 and 4 Two arms 220A and 220B extend outward from the hub 210, away from the rotation axis O of the side brush assembly 200.
[0053] Each arm 220A and 220B extends along a length L1. The length L1 is the straight-line length from the connecting end 221A of each arm 220A and 220B to the free end 222A, which is attached to the hub 210. In the example of this disclosure, the two arms 220A and 220B are configured to be spaced apart and inclined on the semicircular side of the hemispherical portion 210A of the hub 210, with the inclination direction opposite to the unidirectional rotation direction of the hub 210. In conventional brush arrangements, two or more arms are directly and symmetrically distributed around the hub, which increases the friction area between the bristles and the surface to be cleaned during the cleaning process of the cleaning robot, making the bristles prone to dispersion, potentially damaging the bristles and affecting the cleaning effect. In this disclosure, the two arms 220A and 220B are spaced apart and arranged on the semicircular side of the hub, forming an asymmetrical vortex arrangement relative to the rotation axis O. Each arm is tilted so that its longitudinal axis is opposite to the unidirectional rotation direction of the hub. This reduces the contact area between the arm and the surface to be cleaned during rotation compared to a symmetrical arrangement of arms evenly distributed around the hub. The tilted arrangement minimizes the dispersion of bristles adhering to the arms, thereby reducing bristle damage and improving cleaning efficiency.
[0054] In some examples, such as Figure 3 As shown, each arm 220A and 220B is angled relative to an orthogonal plane perpendicular to the rotation axis O of the side brush assembly 200. Each arm 220A and 220B includes a connecting section 221 extending outward from the hub 210 and a free section 222 extending outward from the connecting section 221, both away from the rotation axis O. The connecting section 221 is configured to connect the arms 220A and 220B to the hub 210, while the free section 222 is configured to connect the bristle bundles 230A and 230B. The connecting section 221 is mounted on the hub 210 in the aforementioned inclined manner, with the inclination direction opposite to the unidirectional rotation direction of the hub 210. When the side brush assembly 200 is mounted to the drive shaft, both the connecting section 221 and the free section 222 extend downward toward the ground surface. Although the hub 210 is relatively low in height, allowing it to be positioned above the ground surface with a certain gap, the downward extension of the connecting segment 221 and the free segment 222 allows the bristle bundles 230A and 230B to contact the ground surface. The angle between the connecting segment 221 of each arm 220A and 220B and the orthogonal plane of the axis of rotation is greater than the angle between the free segment 222 and the orthogonal plane of the axis of rotation. The connecting segment 221 and the free segment 222 extend outward from the hub 210. The connecting segment 221 is attached to the hub 210 at the connecting end 221A of each arm 220A and 220B and extends outward from the hub 210 away from the axis of rotation O. The free segment 222 extends outward from the connecting segment 221 away from the axis of rotation O and terminates at the free end 222A of each arm 220A and 220B.
[0055] For example, both connecting segment 221 and free segment 222 extend outward away from the rotation axis O, so that when the side brush assembly 200 rotates, the free end 222A of each arm 220A and 220B sweeps across an imaginary circle. When viewed along the Y-axis, this circle is swept by the outermost point of the free end 222A of each arm 220A and 220B. By extending outward, connecting segment 221 and free segment 222 enable the side brush assembly 200 to extend outward from the self-moving surface cleaning robot, covering the outer perimeter of the self-moving surface cleaning robot and the area outside and below the cleaning width.
[0056] refer to Figure 4 In some embodiments, the connecting segment 221 extends downward from the hub 210. The free segment 222 extends further downward from the connecting segment 221. By extending downward, arms 220A and 220B enable bristle bundles 230A and 230B to contact the ground surface below the side brush assembly 200. In some embodiments, the angle between the connecting segment 221 of each arm 220A and 220B and the orthogonal plane of the rotation axis is greater than the angle between the free segment 222 and the orthogonal plane of the rotation axis. The connecting segment 221 is angled upward relative to the free segment 222, such that the angle between the connecting segment 221 and the orthogonal plane of the rotation axis is greater than the angle between the free segment 222 and the free segment 222. In some embodiments, the free segment 222 of each arm 220A and 220B is angled relative to the connecting segment 221 in a direction opposite to the unidirectional rotation direction of the side brush assembly 200. For example, the angle between the connecting segment 221 of each arm 220A and 220B and the plane containing the rotation axis O is less than the angle between the free segment 222 and the plane containing the rotation axis.
[0057] In some implementations, reference Figure 3 and Figure 4 Two bristle bundles 230A and 230B are respectively connected to and extend outward from the two arms 220A and 220B. Each bristle bundle 230A and 230B includes multiple bristles that sweep the floor surface when the side brush assembly 200 rotates during autonomous cleaning operation. The bristle bundles 230A and 230B of the side brush assembly 200 can sweep the surface to be cleaned and push debris toward the cleaning assembly 300. During rotation, at least a portion of the bristle bundles 230A and 230B can be positioned below the cleaning assembly 300 during the rotation of the side brush assembly 200 and the cleaning assembly 300.
[0058] In this disclosure, Figure 3 and 4In the illustrated embodiment, the cross-sectional area of the free segment 222 is larger than that of the connecting segment 221, which enhances the arm's ability to deflect flexible debris (such as hair) outward. In one example, the cross-sectional area of the free end 222A of the free segment 222 is larger than that of the connecting end 221A of the connecting segment 221. This configuration provides overall structural stability and a wider surface for the bristle bundle mounting. In some examples, the free end 222A includes an end face 222B for connecting bristle bundles 230A and 230B, and bristle bundles 230A and 230B and a protrusion 230C extending outward from the end face 222B. The protrusion 230C facilitates further blocking of flexible debris (such as hair) from migrating further onto the free end 222A, ensuring that the hub is not entangled in flexible debris (such as hair) leading to rotational failure.
[0059] To facilitate the capture of flexible debris, in some examples, protrusions 230C are positioned on the side of bristle bundles 230A and 230B opposite to the unidirectional rotation direction of the hub 210. After the bristle bundles 230A and 230B sweep and pick up the flexible debris, such as hair or thread, protrusions 230C, along with bristle bundles 230A and 230B and end face 222B, collectively prevent the flexible debris from further migrating centripetally. In some embodiments, protrusions 230C and bristle bundles 230A and 230B are spaced apart on the end face, and when the rotation axis O of the hub 210 is orthogonal to the horizontal plane, the projections of protrusions 230C and bristle bundles 230A and 230B on the horizontal plane do not coincide, ensuring that the spacing between protrusions 230C and bristle bundles 230A and 230B can hold the flexible debris in place, preventing the flexible debris from affecting the rotation of the hub. In summary, in the embodiments of this disclosure, the above-described configuration of the side brush assembly prevents flexible debris (such as hair or thread) entangled in the bristle bundles from moving along the arm toward the hub. The spaced arrangement of the protrusions and bristle bundles on the end face increases the difficulty of moving flexible debris, confining it towards the hub between the protrusions and the bristle bundles. This effectively prevents flexible debris from becoming entangled on the drive shaft operatively connected to the cleaning device's hub, thereby reducing the risk of drive shaft stalling due to entanglement. Therefore, the cleaning device can maintain consistent cleaning performance, ensure uninterrupted operation, and improve the user experience by reducing maintenance requirements related to debris removal.
[0060] In some embodiments, the free segment 222 further includes a gradient 222C located on its underside. The gradient 222C includes an inclined surface 222D facing the unidirectional rotation direction of the hub 210. The gradient 222C increases the contact area of the free segment 222, making it more difficult for flexible debris to migrate through the free segment 222 and preventing flexible debris from gathering towards the hub. The inclined surface 222D can guide obstacles on the ground during the unidirectional rotation of the hub 210, preventing the free segment 222 from being stuck by obstacles and causing abnormal deformation. In some examples, the inclined surface 222D has a tendency to tilt towards the end face 222B on the free segment 222, thereby guiding dirt particles, especially flexible debris (such as hair), present on the surface to be cleaned towards the end face 222B during rotation, further preventing flexible debris from migrating towards the hub.
[0061] Although the side brush assembly 200 is described as extending beyond the front surface and sides of the self-moving surface cleaning robot, in some embodiments, the side brush assembly 200 extends only beyond the front surface of the self-moving surface cleaning robot or only beyond the sides of the self-moving surface cleaning robot. Although the self-moving surface cleaning robot... Figure 1-4The self-moving surface cleaning robot is described as including a side brush assembly 200. In some embodiments, the self-moving surface cleaning robot includes multiple side brush assemblies. For example, one side brush assembly is positioned near one side, while another side brush assembly is positioned near the other side. In some embodiments, if the self-moving surface cleaning robot includes multiple side brush assemblies, either side can be positioned as adjacent to the obstacle during obstacle-following behavior. The self-moving surface cleaning robot does not have a primary obstacle-following side. In this respect, the self-moving surface cleaning robot does not need to be repositioned to position its following side near the obstacle in order to clean near the obstacle. Although the side brush assembly 200 is shown and positioned adjacent to the right side of the self-moving surface cleaning robot, in some embodiments, the side brush assembly may instead be positioned on the left side of the self-moving surface cleaning robot. The primary obstacle-following side of the self-moving surface cleaning robot may correspond to the left side of the self-moving surface cleaning robot rather than the right side. 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.
[0062] 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.
[0063] 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 self-moving surface cleaning robot, characterized in that, include: The main body is used for walking on the floor to remove dirt and form the exterior; The side brush assembly has its rotation axis located near the side of the self-moving surface cleaning robot; as well as A motor is used to rotate the side brush assembly about a rotation axis; The brush component includes: The wheel hub is configured to engage with the motor of a self-moving surface cleaning robot; Two arms, each extending outward from a direction away from the rotation axis of the side brush assembly, and each arm forming an angle with respect to a plane perpendicular to the rotation axis of the side brush assembly; The two arms are configured to be inclined at intervals on the semicircular side of the hub, and the direction of the inclination is opposite to the unidirectional rotation direction of the hub. Each arm includes a connecting section extending outward from a hub away from the axis of rotation and a free section extending outward from the connecting section away from the axis of rotation, and the cross-sectional area of the free section is greater than the cross-sectional area of the connecting section. And two bristle bundles, each bristle bundle being connected to one of the two arms and extending outward from one of the two arms.
2. The self-moving surface cleaning robot according to claim 1, characterized in that, The connecting section is configured to connect the arm to the hub, and the free section is configured to connect the bristle bundle.
3. The self-moving surface cleaning robot according to claim 1, characterized in that, The connecting section is mounted on the hub at an angle, the direction of which is opposite to the unidirectional rotation direction of the hub.
4. The self-moving surface cleaning robot according to claim 1, characterized in that, The free segment includes: The end face used to connect the bristle bundle; The bristle bundles and protrusions extend outward from the end face, with the protrusions located on the side of the bristle bundle opposite to the unidirectional rotation direction.
5. The self-moving surface cleaning robot according to claim 4, characterized in that, The protrusions and the bristle bundles are spaced apart, and when the rotation axis of the hub is orthogonal to the horizontal plane, the projections of the protrusions and the bristle bundles on the horizontal plane do not coincide.
6. The self-moving surface cleaning robot according to claim 1, characterized in that, The free segment includes a gradient section located on the lower side of the free segment.
7. The self-moving surface cleaning robot according to claim 6, characterized in that, The gradient section includes an inclined surface that faces the unidirectional rotation direction of the hub.
8. The self-moving surface cleaning robot according to claim 1, characterized in that, The free segment of each arm is tilted relative to the connecting segment of each arm in a direction opposite to the rotation direction of the brush assembly.
9. The self-moving surface cleaning robot according to claim 1, characterized in that, The angle between the connecting segment of each arm and the plane is greater than the angle between the free segment of each arm and the plane.
10. A self-moving surface cleaning robot, characterized in that, include: Robot body; A side brush assembly, wherein the side brush assembly is disposed on the robot body; as well as A drive motor is used to drive the side brush assembly to rotate about a rotation axis. The side brush component includes: Wheel hub, the wheel hub being configured to be connected to a drive motor Two arms, each arm including a connecting end connected to the hub and a free end opposite to the connecting end, such that each arm extends outward from the hub in a direction away from the axis of rotation; and each arm is angled relative to a plane perpendicular to the axis of rotation of the side brush assembly; the two arms are configured to be spaced apart and inclined on the semicircular side of the hub, the inclination direction being opposite to the unidirectional rotation direction of the hub, and the cross-sectional area of the free end is larger than the cross-sectional area of the connecting end; A bristle bundle, said bristle bundle being attached to the free end of each arm and extending outward from the free end of the arm; and A protrusion is formed at the free end of each arm and extends outward from the free end of the arm; The protrusions and bristle bundles are spaced apart on the free end, and when the rotation axis of the hub is orthogonal to the horizontal plane, the projections of the protrusions and bristle bundles on the horizontal plane do not coincide.