Cleaning device

Abstract

The utility model relates to cleaning equipment. The cleaning equipment comprises a shell, a comb tooth assembly and a rolling brush assembly; the shell is provided with a rolling brush cavity and a dust suction opening communicated with the rolling brush cavity, and the length of the dust suction opening is smaller than that of the rolling brush cavity. The comb tooth assembly is arranged in the rolling brush cavity and close to the dust suction opening. The rolling brush assembly is configured to rotate relative to the shell; the rolling brush assembly comprises a rolling brush body, a bristle element and a supporting piece. The bristle element is provided with first bristles and second bristles, and the first bristles and the second bristles incline towards the direction of the dust collection opening, so that hair wound on the rolling brush assembly can move towards the direction of the dust collection opening and is picked up by the dust collection opening; the supporting pieces are distributed on the rolling brush body in the extending direction of the bristle elements and used for supporting hair to be away from the rolling brush body. Hair wound on the rolling brush assembly is easier to separate, the hair can be directly picked up by the dust suction port, a user does not need to manually clean the hair, and the use experience of the user is improved.

Description

[0001] This application claims the priority of a Chinese patent application with the application number 202410482201.3 and the invention title "Cleaning Equipment" filed with the Chinese Patent Office on April 19, 2024, the entire content of which is incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of cleaning technologies, and particularly to a cleaning equipment. Background Art

[0003] With the development of the economy, people's living standards have gradually improved, and the requirements for environmental hygiene have also become higher and higher. To save manpower, a variety of cleaning equipment has emerged on the market, such as floor sweeping robots, mopping robots, sweep-and-mop integrated robots, or handheld cleaning equipment. During the process of cleaning the floor or carpet, hair is likely to wind around the roller brush of the cleaning equipment. If the hair wound around the roller brush is not cleaned for a long time, it will lead to a decline in the cleaning ability of the roller brush, and at the same time, it is also easy to damage the roller brush and the motor.

[0004] Currently, the cleaning method of the roller brush usually relies on the user to manually remove the hair wound around the roller brush, resulting in additional cleaning work for the user; and because the roller brush is contaminated with dirt and is prone to breed bacteria, when the user directly touches the hair wound around the roller brush, there are relatively serious hygiene problems, and at the same time, it will have an adverse impact on the user's experience. Utility Model Content

[0005] The present disclosure provides a cleaning equipment to solve the problems existing in the prior art.

[0006] According to a first aspect of the present disclosure, there is provided a cleaning equipment, comprising:

[0007] A housing, on which a roller brush chamber and a dust suction port communicating with the roller brush chamber are provided, and the length of the dust suction port is less than the length of the roller brush chamber;

[0008] A comb tooth assembly, which is arranged in the roller brush chamber and is arranged at a position close to the dust suction port;

[0009] A roller brush assembly, which is installed in the roller brush chamber and is configured to rotate relative to the housing to clean a working surface;

[0010] Wherein, the roller brush assembly comprises:

[0011] A roller brush body extending along the X-axis direction;

[0012] A bristle element having a first bristle and a second bristle, the first bristle and the second bristle being configured to be inclined toward the direction of the suction port so that the hair wound around the roller brush assembly can move toward the direction of the suction port and be picked up by the suction port;

[0013] A support member configured to be distributed on the roller brush body along the extending direction of the bristle element, the support member being used to support the hair away from the roller brush body.

[0014] In an embodiment of the present disclosure, the first bristle and the second bristle respectively include a plurality of bristle bundles arranged at intervals on the roller brush body, and the free ends of the plurality of bristle bundles in the first bristle and the second bristle are respectively configured to be a continuous line or surface.

[0015] In an embodiment of the present disclosure, the free end of the bristle element is configured to extend beyond the free end surface of the support member.

[0016] In an embodiment of the present disclosure, the support member is provided with a recessed area concave toward the surface of the roller brush body at a position corresponding to the suction port, and a comb tooth assembly is provided at a position of the roller brush cavity corresponding to the recessed area.

[0017] In an embodiment of the present disclosure, the orthographic projection of the comb tooth assembly on the working surface is located within the orthographic projection range of the suction port on the working surface.

[0018] In an embodiment of the present disclosure, the comb tooth assembly includes comb tooth portions arranged at intervals and inclined, and the two opposite ends of the comb tooth assembly are respectively denoted as a first end and a second end; the relationship between the inclination direction of the comb tooth portion and the rotation direction of the roller brush assembly is as follows: the comb tooth portion is configured to be gradually inclined outward from the first end pre - contacted by the bristle element to the second end.

[0019] In an embodiment of the present disclosure, the comb tooth assembly is configured to be located above the suction port; the first end of the comb tooth assembly faces the direction of the suction port.

[0020] In an embodiment of the present disclosure, the comb tooth portion includes a first tooth portion and a second tooth portion arranged at intervals; the extending direction of the first end of the first tooth portion deviates from the rotation center axis of the roller brush body, and the extending direction of the first end of the second tooth portion biases toward the rotation center axis of the roller brush body.

[0021] In an embodiment of the present disclosure, the comb tooth portion includes a first tooth portion and a second tooth portion arranged at intervals; in the direction opposite to the rotation direction of the roller brush assembly, the first end of the first tooth portion is configured to protrude from the first end of the second tooth portion.

[0022] In an embodiment of the present disclosure, a blocking portion extending towards the bristle element is provided in the roller brush cavity, and the bristle element corresponding to the blocking portion is configured to interfere with the blocking portion during rotation, and the comb tooth assembly and the blocking portion are distributed on both sides of the vertical central axis of the roller brush body.

[0023] In an embodiment of the present disclosure, a roller brush cover is provided at the opening position of the roller brush cavity, and the blocking portion is an arc-shaped flange provided on the roller brush cover.

[0024] In an embodiment of the present disclosure, the length of the comb tooth assembly is 1 / 2 to 4 / 3 of the dust suction port.

[0025] In an embodiment of the present disclosure, the gap between the support member and the comb tooth assembly is configured to be 0.3 - 2 mm; and / or the free end of the bristle element is configured to exceed the free end surface of the support member by a height of 0.5 - 2 mm.

[0026] In an embodiment of the present disclosure, the support member is provided with a recessed area concave towards the surface of the roller brush body at a position corresponding to the dust suction port, and the height difference between the lowest position of the recessed area and the highest position of the free end surface of the support member is 0 - 2 mm.

[0027] According to a second aspect of the present disclosure, a cleaning device is provided, including: [[ID=^16]]

[0028] A housing, on which a roller brush cavity and a dust suction port communicating with the roller brush cavity are provided, and the length of the dust suction port is less than the length of the roller brush cavity;

[0029] A roller brush assembly, both ends of the roller brush assembly are respectively installed on both sides of the roller brush cavity, and the roller brush assembly is configured to rotate relative to the housing to clean a working surface;

[0030] Wherein, the roller brush assembly includes:

[0031] A roller brush body extending in the X-axis direction;

[0032] Bristle elements, having first bristles and second bristles, the first bristles and the second bristles are configured to be inclined towards the dust suction port, so that the hair wound on the roller brush assembly can move towards the dust suction port and be picked up by the dust suction port;

[0033] A support member, the support member is configured to be distributed on the roller brush body along the extension direction of the bristle element, and the support member is used to support the hair away from the roller brush body.

[0034] One beneficial effect of the present disclosure is that by setting the bristles on the roller brush assembly to be inclined towards the dust suction port, the hair and other slender objects wound around the roller brush assembly can gather towards the direction of the dust suction port during the rotation along with the bristles and are finally picked up by the dust suction port. The hair moving axially on the roller brush assembly is more likely to break free, preventing foreign objects such as hair from tightly winding around the roller brush assembly; in addition, the hair and other foreign objects can move towards the dust suction port on the roller brush assembly, and thus can break away from the roller brush assembly under the greater suction force provided by the dust suction port. The cleaning device of the present disclosure can minimize or avoid problems such as hair entanglement. Users no longer need to manually clean, improving the user experience; in addition, it can also prevent problems such as a decrease in cleaning ability and motor jamming damage caused by hair winding around the roller brush body, extending the service life of the cleaning device.

[0035] Other features and advantages of the present disclosure will become clear from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0037] Figure 1 is a bottom view of the cleaning device of the present disclosure;

[0038] Figure 2 is an exploded view of the structure of the cleaning device of the present disclosure;

[0039] Figure 3 is a bottom view of the cleaning device of the present disclosure with the roller brush assembly hidden;

[0040] Figure 4 is a cross-sectional view of the cleaning device of the present disclosure;

[0041] Figure 5 is a schematic structural view of the roller brush assembly and the roller brush cover of the present disclosure;

[0042] Figure 6 is a schematic structural view of the roller brush assembly of the present disclosure;

[0043] Figure 7 is a schematic structural view of the roller brush assembly from another angle of the present disclosure;

[0044] Figure 8 is an exploded view of the structure of the roller brush assembly of the present disclosure;

[0045] Figure 9 is a schematic view of three unfolded structures of the support assembly of the present disclosure;

[0046] Figure 10It is a schematic diagram of the angular relationship between the bristle bundle and the roller brush assembly of the present disclosure;

[0047] Figure 11 It is a schematic structural diagram of the comb tooth assembly of the present disclosure;

[0048] Figure 12 It is Figure 11 A partial enlarged view of the position of the comb tooth part in

[0049] Figure 13 It is a schematic structural diagram of the comb tooth assembly from another angle of the present disclosure;

[0050] Figure 14 It is a schematic diagram of the relationship between two adjacent comb tooth parts of the present disclosure;

[0051] Figure 15 It is a partial cross-sectional view of the cleaning device of the present disclosure;

[0052] Figure 16 It is Figure 4 A partial enlarged view of part M in

[0053] Figure 17 It is Figure 4 A partial enlarged view of part N in

[0054] Figure 18 It is Figure 2 A partial enlarged view of part L in

[0055] Figure 19 It is a schematic structural diagram of the roller brush cover of the present disclosure;

[0056] Figure 20 It is a schematic diagram of the relationship between the first bristle and the second bristle of the present disclosure.

[0057] Figures 1 to 20 The one-to-one correspondence between the names of the components and the reference numerals in

[0058] 1. Housing; 11. Roller brush cavity; 111. Sealing cavity; 112. Assembly groove; 12. Dust suction port; 13. Roller brush cover; 131. Blocking part; 132. Installation groove; 133. Fitting groove; 2. Roller brush assembly; 21. Bristle element; 211. First bristle; 212. Second bristle; 22. Support member; 221. Concave area; 23. Roller brush body; 231. Rotating shaft; 24. End face brush; 25. Input shaft; 26. Rotating seat; 27. Rotating bracket; 3. Driving assembly; 31. Transmission cavity; 4. Comb tooth assembly; 40. Mounting plate; 41. First tooth part; 42. Second tooth part; 43. First end; 44. Second end. Detailed implementation manners

[0059] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0060] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present disclosure or its application or use.

[0061] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0062] It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0063] In this document, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than to define the absolute positions of these relevant parts.

[0064] In this document, "first", "second", etc. are only used for distinction from each other, rather than indicating importance, order, or the premise of mutual existence, etc.

[0065] In this document, "equal", "same", etc. are not strict mathematical and / or geometric limitations, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0066] In this document, "connection" includes various connection methods including direct connection and indirect connection, and does not require physical contact between the various parts to be connected. It includes various specific connection methods such as snap connection, screw connection, connection without a fixing device, welding, riveting, and integral molding. In the case of component fitting, it includes various fitting relationships such as clearance fit, transition fit, interference fit, or variable clearance.

[0067] The present disclosure provides a cleaning device, which may be a handheld cleaning device, such as a handheld washing machine, a handheld vacuum cleaner, a handheld floor washer, etc., which are well-known handheld cleaning devices in the art. It may also be a self-propelled cleaning device such as a floor sweeping robot, a mopping robot, or a combined sweeping and mopping robot for cleaning work surfaces such as floors, sofas, and carpets that need to be cleaned. In an embodiment where the cleaning device of the present disclosure is a handheld floor washer, when the user uses the floor washer for cleaning work, the user can push the floor washer to move on the ground and use the floor brush assembly of the floor washer to clean the work surface. In an embodiment where the cleaning device of the present disclosure is a self-propelled cleaning device, the robot moves self-propelledly on the work surface according to the planned path or based on the information detected by each sensor and completes the cleaning of the work surface.

[0068] Reference Figure 1 , in an embodiment of the present disclosure, the cleaning device is a cleaning robot, including: a housing 1 and a roller brush assembly 2. The housing 1 is the basic carrier of the cleaning device and is used to carry other components of the cleaning device. The roller brush assembly 2 can be installed on the housing 1, for example, it can be installed at the bottom or the front end of the housing 1. A traveling mechanism can be provided at the bottom of the housing 1 to drive the cleaning device to travel on the work surface. At this time, the housing 1 drives the roller brush assembly 2 to move on the working plane, thereby cleaning the work surface.

[0069] As Figure 2 shown, a roller brush cavity 11 and a dust suction port 12 communicating with the roller brush cavity 11 are provided on the housing 1, and the length of the dust suction port 12 is less than the length of the roller brush cavity 11. Among them, the roller brush cavity 11 can be opened on the bottom surface of the housing 1 or at the front end position of the housing 1, which depends on the arrangement positions of other components inside the floor sweeping robot, and the present disclosure does not limit this. The roller brush cavity 11 is configured in a shape adapted to the roller brush assembly 2, and the roller brush assembly 2 is installed in the roller brush cavity 11 of the housing 1. The roller brush cavity 11 can form a semi-surrounding structure, which has an opening facing the work surface, and at least part of the roller brush assembly 2 is exposed outside the roller brush cavity 11 from the opening of the roller brush cavity 11 to contact the work surface.

[0070] [[ID=]13]The roller brush assembly 2 is configured to rotate relative to the housing 1 to clean the work surface. Specifically, the cleaning device may include a driving component 3 provided inside the housing 1. The driving component 3 may be a motor or a transmission mechanism driven by a motor. The driving component 3 can drive the roller brush assembly 2 to rotate around its own central axis, so that the roller brush assembly 2 can clean work surfaces such as floors, carpets, and sofas. In a specific embodiment of the present disclosure, the rotation speed of the roller brush assembly 2 can be 1100-1500 revolutions per minute. The high-speed rotating roller brush assembly 2 has an efficient and powerful cleaning effect. In other embodiments, the roller brush assembly 2 can also be controlled to work at other rotation speeds, and those skilled in the art can adjust according to specific needs.

[0071] The dust suction port 12 can be, for example, an opening formed on the inner wall of the brush roller chamber 11. In this embodiment, the end face where the dust suction port 12 is located is the inner wall of the brush roller chamber 11, and the dust suction port 12 is communicated with the dust collection box through a dirt suction channel, so that foreign objects can enter the dust collection box through the dust suction port 12. Refer to Figure 3 , the dust suction port 12 can be formed on the front side or the rear side of the brush roller assembly 2, or can be formed at a position directly above the brush roller assembly 2. In a specific embodiment, the bottom of the dust suction port 12 is configured to be located at a position higher than the rotation axis of the brush roller assembly 2. Among them, the dust suction port 12 can be configured to extend along the axial direction of the brush roller assembly 2.

[0072] In an embodiment of the present disclosure, the length of the dust suction port 12 along the axis of the brush roller assembly 2 is configured to be less than the length of the brush roller assembly 2 in its axial direction. For example, the ratio range of the length of the dust suction port 12 to the length of the brush roller assembly 2 is 30% to 80%. For a cleaning robot, due to the limitation of structural compactness, its suction force is often smaller than that of handheld vacuuming devices such as vacuum cleaners and floor scrubbers. Setting the ratio range of the dust suction port 12 to the length of the brush roller assembly 2 below the upper limit value can ensure that the suction force generated by the negative pressure fan of the cleaning robot is not overly dispersed, thereby ensuring the suction effect on large particle dirt and foreign objects such as hair; setting the ratio range of the dust suction port 12 to the length of the brush roller assembly 2 above the lower limit value can increase the coverage range of the dust suction port 12 and improve the cleaning efficiency. When the brush roller assembly 2 rotates past the working surface, it can roll up dust and garbage and bring them to the suction range of the dust suction port 12 for picking up to achieve the cleaning purpose.

[0073] Specifically, a negative pressure device can be provided in the cleaning device. The negative pressure device is used to generate a suction airflow. Under the action of the suction airflow, the dust and garbage sucked in from the dust suction port 12 will be collected into the dust collection box in the housing 1. The dust carried on the brush roller assembly 2 can be timely picked up by the dust suction port 12, thereby improving the cleaning effect on dust-like dirt on the ground; however, when there is hair-like dirt on the ground, since the length of the hair is often much larger than the diameter of the brush roller assembly 2, the hair tends to wind around the brush roller assembly 2 when the brush roller assembly 2 rotates at a high speed.

[0074] Refer to Figure 6, the rotational axis direction of the roller brush assembly 2 is defined as the X-axis. The roller brush assembly 2 includes a roller brush body 23 extending in the X-axis direction and a cleaning component provided on the roller brush body 23. The roller brush body 23 is rotatably connected in the roller brush cavity 11 of the housing 1, and its rotational axis is configured to be parallel to the working surface. As an alternative embodiment, the rotational axis of the roller brush body 23 may also not be parallel to the working surface. The cleaning component may include bristle elements 21. Specifically, the bristle elements 21 are distributed on the roller brush body 23, and the free ends of the bristle elements 21 are configured to be able to contact or be in interference fit with the working surface, so that the bristle elements 21 can pick up garbage on the working surface during rotation, such as debris, hair, dust, etc. The bristle elements 21 may include multiple clusters of bristle bundles, and the bristle bundles can be connected to the surface of the roller brush body 23 by hair planting, sewing, bonding or other methods well known to those skilled in the art. In another embodiment of the present disclosure, the bristle elements may also be bristle filaments distributed on the roller brush body 23. These bristle filaments are not distributed in the form of bundles, but are densely distributed on the surface of the roller brush body 23 or arranged on the surface of the roller brush body 23 according to a preset shape and extension direction. During the cleaning process of the roller brush assembly 2, long and thin foreign objects such as hair and string picked up by the bristle elements 21 are likely to be wound around the surface of the roller brush body 23 during the rotational movement, which will cause a decrease in the cleaning ability of the roller brush assembly 2 and is also likely to damage the roller brush assembly 2 and the drive assembly 3.

[0075] To solve the above problems, as Figure 7 shown, in the X-axis direction, the bristle elements 21 are configured to be inclined towards the dust suction port 12, so that the hair wound around the bristle elements 21 can gather towards the direction where the dust suction port 12 is located during the rotation of the roller brush assembly 2. On the one hand, the hair wound around the bristle elements 21 is affected by the suction force of the dust suction port 12 and tends to move towards the position of the dust suction port 12; on the other hand, the hair wound around the bristle elements 21 will be affected by the centrifugal force during the rotation following the bristle elements 21. The bristle elements 21 are inclined towards the dust suction port 12, which can make the hair move towards the dust suction port better. Since the bristle elements 21 are inclined towards the dust suction port 12, the hair wound around the bristle elements 21 will be affected by the component force towards the dust suction port 12 during rotation. Under the action of this component force, the hair moves towards the dust suction port 12; the bristle elements 21 inclined towards the dust suction port 12 provide a movement path for the hair, and this movement path is towards the dust suction port 12. Under the action of the suction force generated at the dust suction port 12, the hair moves towards the dust suction port 12.

[0076] Furthermore, during the rotation of the bristle element 21, the bristle bundles deform each time they contact the working surface and rebound after sweeping across the working surface; since each bristle bundle on the bristle element 21 is inclined towards the dust suction port 12, and hair usually tangles between adjacent bristle bundles, when the bristle bundles deform, the hair wound thereon can rub between the working surface and the bristle element 21 and receive a frictional component force towards the dust suction port 12; when the bristle bundles rebound, the hair can move over the currently wound bristle bundle under the action of elastic force and move towards the direction where the dust suction port 12 is located, and then travel to the gap between the next set of bristle bundles. Under the combined action of the above multiple factors, by using the bristle element 21 arranged towards the dust suction port 12, the hair wound on the bristle element 21 can be gathered towards the dust suction port 12.

[0077] In the present disclosure, by arranging the bristle element 21 on the roller brush assembly 2 to be inclined towards the dust suction port, the hair and other slender objects wound on the roller brush assembly 2 can gather towards the direction where the dust suction port 12 is located during the rotation together with the bristle element 21 and are finally picked up by the dust suction port 12. The hair moving axially on the roller brush assembly 2 is more likely to break away, preventing foreign objects such as hair from being tightly wound on the roller brush assembly 2; in addition, the hair and other foreign objects can move towards the dust suction port 12 on the roller brush assembly 2, so that they can break away from the roller brush assembly 2 under the action of the greater suction force provided by the dust suction port 12. It can be understood that as long as the hair is not tightly wound on the roller brush assembly 2, the hair on the roller brush assembly 2 has a certain space for movement, and it can move axially as the roller brush assembly 2 rotates. Therefore, the hair and other foreign objects wound on the roller brush assembly 2 will ultimately be picked up by the dust suction port 12 during the movement process. The cleaning device of the present disclosure can minimize or avoid problems such as hair entanglement, and users no longer need to manually clean, improving the user experience; in addition, it can also prevent problems such as a decrease in cleaning ability and motor jamming damage caused by hair entanglement on the roller brush assembly 2, extending the service life of the cleaning device.

[0078] In order to prevent foreign objects such as hair from entangling the roller brush body 23, the cleaning component may further include a support member 22, and the support member 22 is used to support debris, hair, string and other foreign objects away from the roller brush body 23. Specifically, the support member 22 is arranged on the roller brush body 23 and is configured to be distributed on the roller brush body 23 along the extension direction of the bristle element 21, that is, the extension direction of the support member 22 on the roller brush body 23 is the same as the extension direction of the bristle element 21 on the roller brush body 23, both extending linearly along the axial direction of the roller brush body 23 or being spirally arranged on the roller brush body 23. The support member 22 can be a rubber strip, such as a rubber strip, a silicone strip or a plastic strip with a certain deformation ability.

[0079] A plurality of support members 22 may be provided. The plurality of support members 22 are distributed along the circumferential direction of the roller brush body 23, so that foreign objects such as hair are fully supported in the circumferential direction. The hair can surround the support member 22 with a relatively large diameter and will not be wound around the roller brush body 23. This can reduce the number of winding turns of foreign objects such as hair, making the hair not easily entangled and easy to disengage from the roller brush assembly 2. The support member 22 can be assembled on the roller brush body 23 through a chute, or can be fixed to the roller brush body 23 by injection molding, gluing or other means.

[0080] In an embodiment of the present disclosure, both ends of the roller brush assembly 2 are respectively installed on both sides of the roller brush cavity 11. Specifically, referring to Figure 8 , Figure 16 and Figure 17 , the roller brush assembly 2 further includes an input shaft 25 and a rotating seat 26 provided at both ends in the axial direction of the roller brush body 23. Among them, one end of the input shaft 25 away from the roller brush body 23 passes through the housing 1 at the side wall position of the roller brush cavity 11 and is drivingly connected to the driving assembly 3 in the housing 1. In a specific embodiment, the input shaft 25 can be fixedly connected to one end of the roller brush body 23 by means of dispensing. Referring to Figure 8 in the view direction, the input shaft 25 can be fixed to the left end of the roller brush body 23. In this way, when the driving assembly 3 works, it can drive the input shaft 25 to rotate together, thereby driving the roller brush body 23 and the cleaning components provided on the roller brush body 23 to rotate together to clean the working surface during the rotation process.

[0081] Continuing to refer to Figure 8 in the view direction, the rotating seat 26 is provided at the right end of the roller brush body 23. The right end of the roller brush body 23 has a rotating shaft 231 extending outward. The rotating seat 26 is engaged with the rotating shaft 231, so that the roller brush body 23 can rotate freely relative to the rotating seat 26. A rotating bracket 27 is respectively provided between the input shaft 25, the rotating seat 26 and the cleaning components on the surface of the roller brush body 23, as shown in Figure 8As shown, two rotating brackets 27 can be arranged on both sides of the brush roller body 23. Through holes can be arranged on the rotating brackets 27. The rotating shaft 231 and the input shaft 25 can penetrate through the rotating brackets 27 and be fixedly connected to the rotating brackets 27. For example, interference fit or other well-known methods in the art can be used to assemble the two together, or they can be integrally injection-molded. The present disclosure does not limit this here. The cleaning components on the brush roller body 23 are restricted to rotate between the two rotating brackets 27. The two rotating brackets 27 can serve the purpose of protecting the brush roller body 23 and preventing friction between both ends of the brush roller body 23 and the housing 1. Additionally, since the brush roller body 23 needs to be rotatably connected to the housing 1, the rotating brackets 27 can reduce the gap between both ends of the brush roller body 23 and the housing 1, reducing the entry of foreign matters such as dust and hair into the gap between the brush roller body 23 and the housing 1.

[0082] A brush roller clamping cover 13 is also arranged at the opening position of the brush roller cavity 11. The brush roller clamping cover 13 can be installed on the housing 1 by means of snap fasteners, screws, etc. The brush roller clamping cover 13 is configured as an annular frame structure, and its opening is adapted to the position where the brush roller assembly 2 extends, for structures such as the brush elements 21 and the support 22 to extend for cleaning. The brush roller clamping cover 13 can enclose the input shaft 25 and the rotating seat 26 inside the housing 1, preventing the input shaft 25 and the rotating seat 26 from colliding with foreign matters and being damaged during the cleaning process, thereby preventing the brush roller assembly 2 from falling off from the brush roller cavity 11 and improving the safety of the cleaning device.

[0083] In a specific embodiment of the present disclosure, referring to Figure 16 , the drive assembly 3 forms a transmission cavity 31 at the position corresponding to the input shaft 25 of the brush roller assembly 2. When installing the brush roller assembly 2, the input shaft 25 of the brush roller assembly 2 is extended into the transmission cavity 31 and is in transmission connection with the drive assembly 3, and the input shaft 25 of the brush roller assembly 2 is supported through the transmission cavity 31. Referring to Figure 18 , an assembly groove 112 is arranged on the housing 1 at the position corresponding to the rotating seat 26 of the brush roller assembly 2. The assembly groove 112 has an opening facing the working surface and is configured to have a shape adapted to a part of the surface of the rotating seat 26. The rotating seat 26 of the brush roller assembly 2 is installed in the assembly groove 112 through the opening. Referring to Figure 19 , a mating groove 133 is arranged on the brush roller clamping cover 13 at the position corresponding to the assembly groove 112. After the brush roller clamping cover 13 is buckled on the housing 1, the mating groove 133 cooperates with the assembly groove 112, so that the rotating seat 26 of the brush roller assembly 2 is installed in the space surrounded by the assembly groove 112 and the mating groove 133, thereby providing support for the rotating seat 26 of the brush roller assembly 2.

[0084] In an embodiment of the present disclosure, seals are respectively arranged at both ends of the roller brush assembly 2, and the roller brush chamber 11 can be isolated from the rotating structures at both ends of the roller brush assembly 2 through the seals. The seal can be a bearing, through which not only can the supports at both ends of the roller brush assembly 2 be realized, but also the roller brush chamber 11 can be isolated from the rotating structures at both ends of the roller brush assembly 2.

[0085] In a specific embodiment of the present disclosure, the seal is arranged on the circumferential surface of the rotating bracket 27 during rotation, and the seal is configured to always have an interference fit or a clearance fit with the roller brush chamber 11 and the roller brush cover 13, so as to play a role in blocking foreign objects. In this embodiment, since the rotating bracket 27 is arranged on both sides of the roller brush body 23 and is located between the roller brush body 23 and the corresponding rotating structure, the rotating bracket 27 itself also plays a role of blocking and isolating, and cooperates with the seal to isolate and seal the roller brush chamber 11 from the rotating structures at both ends of the roller brush assembly 2. The rotating structures at both ends of the roller brush assembly 2 include but are not limited to the rotating shaft of the roller brush assembly, the rotating shaft seat, the driving assembly 3, etc., which will not be listed one by one here.

[0086] In a specific embodiment of the present disclosure, refer to Figure 8 、 Figure 16 and Figure 17 ,the seal is an end face brush 24, and the end face brush 24 can be a brush hair structure extending outwards, or a brush wire structure intertwined together and having a certain fluffiness, etc. It can be bonded to the rotating bracket 27 by means of back glue or connected to the rotating bracket 27 by other methods well-known to those skilled in the art. The two end face brushes 24 are configured to always have an interference or clearance fit with the roller brush chamber 11 and the roller brush cover 13, so as to play a role in blocking foreign objects.

[0087] Specifically, refer to Figures 16 to 18 ,sealing chambers 111 are arranged at the positions of both ends of the roller brush chamber 11 on the housing. The size of the sealing chamber 111 can be smaller or larger than the size of the roller brush chamber 11, and a step is formed at the position where the roller brush chamber 11 communicates with the sealing chamber 111. The roller brush body 23 is arranged at the position corresponding to the roller brush chamber 11, and the end face brush 24 is arranged at the position corresponding to the sealing chamber 111 and interferes with the sealing chamber 111, so that the communication between the roller brush chamber 11 and other transmission structures can be isolated through the cooperation of the end face brush 24 and the sealing chamber 111.

[0088] Specifically, refer to Figures 16 to 19, the sealing cavity 111 is configured to be arc-shaped, and the corresponding two sides of the rolling card cover 13 are configured to have arc-shaped mounting grooves 132. The sealing cavity 111 and the mounting grooves 132 are configured to at least partially surround the end face brush 24, so as to surround the end face brush 24 and the rotating bracket 27, thereby realizing isolation from the rolling brush cavity 11. The surface of the end face brush 24 is in interference fit or clearance fit with the inner walls of the sealing cavity 111 and the mounting grooves 132, which enables the end face brush 24 to continuously contact the inner walls of the sealing cavity 111 and the mounting grooves 132 during the rotation of the rolling brush assembly 2, thereby achieving sealing and isolation.

[0089] In a specific embodiment of the present disclosure, the end face of the sealing cavity 111 is attached to the end face of the mounting groove 132, which enables the sealing cavity 111 and the mounting groove 132 to form a closed annular structure to surround the end face brush 24 and the rotating bracket 27. In another specific embodiment of the present disclosure, there is a gap between the end face of the sealing cavity 111 and the end face of the mounting groove 132, which enables the sealing cavity 111 and the mounting groove 132 to form a non-closed annular structure to surround the end face brush 24 and the rotating bracket 27.

[0090] In the above embodiments, seals are provided on both sides of the rolling brush assembly 2. Among them, the seal can also be provided on only one side of the rolling brush assembly 2, for example, at one end of the rolling brush assembly 2 adjacent to its input shaft 25, or at one end of the rolling brush assembly 2 adjacent to the rotating seat 26, which will not be elaborated here.

[0091] In an embodiment of the present disclosure, one side of the rotating bracket 27 is disposed at a position between the transmission cavity 31 and the rolling brush cavity 11. It can also be understood that the sealing cavity 111 is located at a position between the transmission cavity 31 and the rolling brush cavity 11. The sealing cavity 111 can be sealed through the rotating bracket 27 and the seals provided on its surface, thereby isolating the transmission cavity from the rolling brush cavity 11 and preventing foreign objects in the rolling brush cavity 11 from entering the transmission cavity 31. The other side of the rotating bracket 27 is disposed at a position between the rolling brush cavity 11 and the assembly groove 112. The sealing cavity 111 can be sealed through the rotating bracket 27 and the seals provided on its surface, thereby isolating the assembly groove 112 from the rolling brush cavity 11 and preventing foreign objects in the rolling brush cavity 11 from entering the assembly groove 112.

[0092] For the roller brush assembly 2 of the present disclosure, the bristle elements 21 and the support member 22 will roll up foreign matters such as hair and debris during the cleaning process. When the foreign matters are located at the edge positions of the bristle elements 21 and the support member 22, they may cross over the rotating bracket 27 and be drawn into the cavity formed by enclosing between the rotating bracket 27 and the housing 1, and may even be wound around a rotating shaft such as the input shaft 25 or other positions, which will cause damage to the roller brush body 23 and may lead to jamming during the rotation of the roller brush assembly 2. In this embodiment, end face brushes 24 are respectively arranged on the rotating bracket 27, so that closed spaces are respectively formed on both sides of the roller brush assembly 2. The foreign matters cannot pass through the densely arranged and high-speed rotating end face brushes 24, so they will not cross over the rotating bracket 27, enhancing the safety of the cleaning device and improving the user experience.

[0093] Reference Figure 2 and Figure 3 Moreover, the cleaning device provided by the present disclosure further includes a comb tooth assembly 4. The comb tooth assembly 4 is arranged in the roller brush cavity 11. The comb tooth assembly 4 has at least two comb tooth parts, and the at least two comb tooth parts are sequentially and spaced apart along the axial direction of the roller brush assembly 2. There is a gap between two adjacent comb tooth parts. When the winding objects such as hair on the roller brush assembly 2 pass through the comb tooth assembly 4, foreign matters such as hair will be combed into the comb tooth grooves formed by two adjacent comb tooth parts, and the foreign matters such as hair will be driven to move in the distribution direction of the comb tooth parts according to the inclination direction of the comb tooth parts, so that the hair passing through the comb tooth assembly 4 can be straightened and loosened during the movement.

[0094] In an embodiment of the present disclosure, the position of the comb tooth assembly 4 and the inclination direction of the comb tooth assembly 4 can be set, so that foreign matters such as hair move in a predetermined direction towards a predetermined position. For example, the comb tooth assembly 4 can be arranged at a position corresponding to the dust suction port 12. Compared with the traditional combs (or guiding teeth, or guiding rib positions) distributed throughout the roller brush cavity 11, the comb tooth assembly 4 of the present disclosure is arranged at a position close to the dust suction port 12, and the length of the comb tooth assembly 4 matches the length of the dust suction port 12. The part of the roller brush cavity 11 where the comb tooth assembly 4 is not arranged can be a smooth chamber. With such a setting, it is possible to avoid the accumulation of dirt including hair and particles in the gaps of the comb tooth parts at positions far from the dust suction port 12, reducing the maintenance frequency of the roller brush chamber.

[0095] The cleaning device provided by other embodiments of the present disclosure includes a first guide member, a second guide member, and a third guide member, and the three together form an anti-tangling system of the cleaning device. Any one of the first guide member, the second guide member, and the third guide member can guide the hair. The movement direction or trend of foreign objects such as hair on each guide member can be the same or opposite. The movement direction or trend of the hair on each guide member is defined as the guiding direction of the guide member. When the cleaning device is working, foreign objects such as particles and hair on the working surface can move in a predetermined direction under the guiding action of any one of the first guide member, the second guide member, and the third guide member. For example, it can move in the direction of the dust suction port 12, so that these foreign objects can be picked up by the dust suction port 12 during the movement and enter the dust collection box. The moving foreign objects are beneficial to the picking up of the dust suction port 12 and also beneficial to the detachment of the foreign objects from the roller brush assembly 2, which can avoid the accumulation or aggregation of foreign objects in a certain area, resulting in poor cleaning effect, or the aggregation on the cleaning device and requiring manual cleaning by the user, etc.

[0096] In the above embodiments where the guiding directions are the same or opposite, in the guiding direction, the parts with guiding functions on the first guide member, the second guide member, and the third guide member can be arranged in sequence or at least partially overlapped. For example, in the guiding direction, the first guide member, the second guide member, and the third guide member are arranged in sequence. In this way, after the foreign object moves under the guiding action of the first guide member, it can be continuously guided by the second guide member and finally guided by the third guide member. Under the principle of this disclosure, the three guide members can be arranged arbitrarily. For example, the foreign object first passes through the second guide member, then passes through the first guide member and the third guide member, or other arrangement orders, which will not be listed one by one here. Or, the first guide member, the second guide member, and the third guide member at least partially overlap, such as only partially overlapping or completely overlapping. It can also be that the overall length of the third guide member is less than that of the first guide member or the second guide member, and the third guide member is located in the middle area or other areas of the first guide member and the second guide member, so that the first guide member and / or the second guide member completely cover the third guide member. With the above structural design, when the foreign object moves to the corresponding position, it can move under the combined guiding action of at least two guide members.

[0097] In a specific embodiment of the present disclosure, the first guide member, the second guide member, and the third guide member can be respectively the above-mentioned bristle element 21, the support member 22, and the comb tooth assembly 4, and the three together constitute components in the anti-tangling system of the cleaning device. Any one of the bristle element 21, the support member 22, and the comb tooth assembly 4 can play a guiding role, and the movement direction or trend of the hair on each guide member can be the same or opposite. In the following embodiments, the bristle element 21, the support member 22, and the comb tooth assembly 4 will be described as the first guide member, the second guide member, and the third guide member respectively. For those skilled in the art, the first guide member, the second guide member, and the third guide member can also be other components with a guiding function or other components that can allow foreign objects to move, such as guide grooves, other power elements that can push or drive foreign objects to move, including but not limited to moving parts or other components that can provide a force for the movement of foreign objects, and will not be listed one by one here.

[0098] In an embodiment where the guiding directions of the bristle element 21, the support member 22, and the comb tooth assembly 4 are the same, it can be configured such that the guiding directions of the bristle element 21, the support member 22, and the comb tooth assembly 4 are directed towards the position of the dust suction port 12. This enables the hair, regardless of which position on the roller brush assembly 2 it is wound around, to move towards the direction of the dust suction port 12, or towards the position with the greatest suction force in the dust suction port 12. Generally speaking, the position with the greatest suction force in the dust suction port 12 is the center of the dust suction port. The hair moves on the bristle element 21, the support member 22, and the comb tooth assembly 4 until the hair moves to a position with sufficient suction force to be picked up.

[0099] As an alternative embodiment, the movement direction of the hair on one of the components of the bristle element 21, the support member 22, and the comb tooth assembly 4 is opposite to the movement direction of the hair on the other two components. In one embodiment, the guiding direction of the comb tooth assembly 4 is opposite to the guiding directions of the bristle element 21 and the support member 22. For example, the bristle element 21 and the support member 22 are configured to provide guidance in a first direction, and the comb tooth assembly 4 is configured to provide guidance in a second direction opposite to the first direction. At this time, the hair that moves to the position of the comb tooth assembly 4 moves reciprocally under the combined action of the comb tooth assembly 4, the bristle element 21, and the support member 22, increasing the distribution distance of the hair in the axial direction of the roller brush assembly 2, thereby playing an axial loosening role for the hair and facilitating the untangling of the hair.

[0100] While retaining the functions of the comb teeth for hooking and loosening the hair, the comb tooth assembly 4 of the present disclosure also has a guiding function by setting guiding teeth. Under the guiding action of the comb tooth assembly 4, the hair can further move towards a position with a greater suction force or be loosened, improving the untangling and picking-up effects of the hair. <able="

[0101] Compared with the traditional comb tooth assembly 4 that can only pick up hair, the anti-tangling system formed by the brush hair elements 21, the support member 22 and the comb tooth assembly 4 of the present disclosure can always keep the hair in a moving state in the axial direction of the roller brush assembly 2, avoiding the accumulation of hair at a certain position (for example, for traditional comb teeth, at the position parallel to the space between two comb teeth), and significantly improving the effect of untangling.

[0102] In an embodiment of the present disclosure, the cleaning device may further include other cleaners in addition to the roller brush assembly 2, such as: various types of cleaners such as a rag tray, a floor brush, a mopping member, a side brush, etc. The cleaner may be a fixed cleaner similar to the roller brush assembly 2, or a movable cleaner that can swing between a first position and a second position, and the present disclosure does not limit this.

[0103] Specifically, a side brush may be provided at the front side position of the bottom of the housing 1. During the cleaning process, at least part of the edge of the side brush is located outside the projection area of the edge of the housing 1, and part of the bristles of the side brush are located at a position exceeding the housing 1, so as to sweep the dirt on the working surface around the cleaning device into the projection range of the housing 1. Setting the side brush enables the cleaning device to have a larger cleaning range, thereby achieving a larger cleaning area. In addition, a rag tray may be provided at the rear side position of the bottom of the housing 1. The different cleaners arranged front and back can achieve sequential cleaning of first sweeping and then mopping, thereby improving the cleaning effect.

[0104] The basic structure and working principle of the cleaning device provided by the present disclosure are introduced above. In order to more clearly illustrate the anti-tangling and untangling functions of the cleaning device of the present disclosure, the brush hair elements 21, the support member 22, the roller brush cover 13, the comb tooth assembly 4 and the whole cleaning device in the cleaning device will be introduced in detail below.

[0105] Bristle element

[0106] Reference Figures 6 to 8 , the present disclosure provides a roller brush assembly 2, including a roller brush body 23 and brush hair elements 21 distributed on the roller brush body 23. The free ends of the brush hair elements 2 are configured to be able to contact or have an interference fit with the working surface, so that the brush hair elements 21 can sweep away foreign matters such as debris, hair, and dust on the working surface during rotation.

[0107] In an embodiment of the present disclosure, the length of the bristles on the brush hair elements 21 is greater than the distance from the surface of the roller brush body 23 to the working surface, so as to ensure that the brush hair elements 21 can contact the working surface and form a clearance fit between the brush hair elements 21 and the inner wall of the roller brush cavity 11. In this way, while ensuring the cleaning effect, the brush hair elements 21 can also briefly form a closed space when contacting the ground or the inner wall of the roller brush cavity 11, thereby enhancing the suction effect of the suction port 12.

[0108] Taking the extending direction of the roller brush body 23 as the X-axis, in the X-axis direction, the bristle elements 21 are configured to be inclined, so that the hairs wound around the bristle elements 21 can gather towards a specific direction during the rotation of the roller brush assembly 2.

[0109] Specifically, the part where the bristle element 21 is installed on the roller brush body 23 is defined as the fixed end, and the part away from the roller brush body 23 is defined as the free end. The roller brush body 23 has an inclined reference part deviating from the fixed end of the bristle element 21 in the X-axis direction. The inclined reference part can be a certain point or a certain section on the roller brush body 23. The straight line perpendicular to the X-axis direction and passing through the inclined reference part is defined as the inclined reference line Y. The bristle elements 21 are arranged on both sides of the inclined reference part. For any bristle element 21, the distance between its free end and the inclined reference line Y is less than the distance between its fixed end and the inclined reference line Y.

[0110] From another perspective, the inclined reference part and the fixed ends of the bristle elements 21 are distributed on the X-axis line. The inclined reference line Y is a straight line perpendicular to the X-axis direction and passing through the inclined reference part. The parts of the bristle elements 21 located on both sides of the inclined reference line Y are configured to be inclined towards the inclined reference line Y respectively, so that the hairs wound around the bristle elements 21 can move towards the inclined reference line Y during the rotation of the roller brush assembly 2.

[0111] When the inclined reference line Y is located in the area between the two ends of the roller brush assembly 2, the bristles of the bristle elements 21 respectively arranged on both sides of the inclined reference line Y are configured to be inclined towards the inclined reference line Y respectively, that is, the inclined directions are opposite. For example, the part of the bristles on the left side of the inclined reference line Y inclines to the right, and the part of the bristles on the right side of the inclined reference line Y inclines to the left. In another embodiment of the present disclosure, when the inclined reference line Y is located at the end position of the roller brush assembly 2, that is, the bristle elements 21 are only distributed on one side of the inclined reference line Y. In this embodiment, the inclined directions of the bristle elements 21 are the same, all towards the inclined reference line Y.

[0112] In one embodiment of the present disclosure, the bristle element 21 is composed of a plurality of bristle bundles or bristles. The plurality of bristle bundles or bristles are arranged in the axial direction of the roller brush body 23. For example, they can be arranged along a straight line or a curve. In a specific embodiment of the present disclosure, in the axial direction of the roller brush assembly 2, the bristle element 21 is configured to be spirally distributed along the surface of the roller brush body 23. In this embodiment, the positions of the fixed ends of the bristle element 21 at different positions on the roller brush body 23 are different. For example, there are certain intervals between the fixed ends of adjacent two bristle bundles in both the circumferential direction and the axial direction of the roller brush body 23. In this case, different bristle bundles have different inclined reference lines Y; each bristle bundle inclines towards its corresponding inclined reference line Y respectively.

[0113] Of course, on the basis of the above disclosure, at least some of the bristle bundles can be configured to be inclined towards the same inclined reference line Y.

[0114] As an alternative embodiment, the inclined reference portion is provided at a position corresponding to the position with a relatively large suction force in the suction port 12, and the bristle bundle is inclined towards the inclined reference, that is, the bristle bundle is inclined towards the suction port 12. In a specific embodiment, the inclined reference portion is the center point of the roller brush assembly 2, and the inclined reference line is the center line of the roller brush assembly 2. Figure 7 It is shown in the figure that the inclined reference line Y is located at the central position of the roller brush assembly 2. At this time, the suction port 12 can be provided in the middle area of the housing 1 corresponding to the roller brush body 23, and the hairs wound around both sides of the roller brush assembly 2 can gather towards the middle position, thereby increasing the probability of being picked up by the suction port 12.

[0115] As an alternative embodiment, in the case where the cleaning device has a plurality of suction ports, the roller brush can have a plurality of inclined reference portions.

[0116] From another perspective, a projection plane D perpendicular to the working surface is defined. In the orthographic projection of the bristle element 21 on the projection plane D, the bristle element 21 is inclined from its fixed end to its free end in the direction where the dust suction port 12 is located. The direction where the dust suction port 12 is located is the direction of the dust suction port relative to the fixed end of the bristle element 21 on the X-axis. For example, if the dust suction port 12 is located on the left side of the fixed end of the bristle element 21, the bristle element 21 is configured to be inclined to the left; if the dust suction port 12 is located on the right side of the fixed end of the bristle element 21, the bristle element 21 is configured to be inclined to the right. That is, in the X-axis direction, the bristle elements 21 located on both sides of the dust suction port 12 are configured to be inclined towards the dust suction port 12 respectively, preferably, towards the center of the dust suction port 12. When the roller brush assembly 2 works on the working surface, the hair wound around the bristle element 21 will be affected by the centrifugal force during the rotation following the bristle element 21. Since the bristle element 21 is inclined towards the dust suction port 12, under the guiding action of the inclined bristle element 21, the hair wound around the bristle element 21 will be affected by the component force towards the dust suction port 12 during the rotation. In addition, during the rotation of the bristle element 21, the bristle bundle will deform every time it contacts the working surface and rebound after sweeping across the working surface; since each cluster of bristle bundles on the bristle element 21 is inclined towards the dust suction port 12 and the hair usually winds between adjacent clusters of bristle bundles, when the bristle bundle deforms, the hair wound thereon can rub between the working surface and the bristle element 21 and be affected by the frictional component force towards the dust suction port 12; when the bristle bundle rebounds, the hair can cross the currently wound bristle bundle under the action of the elastic force and move towards the direction where the dust suction port 12 is located, and then wind into the gap of the next group of bristle bundles. In addition, the hair and other garbage will always be affected by the suction force from the dust suction port 12. At this time, the bristle element 21 plays a guiding role in providing the movement path. Under the combined action of multiple factors, the hair wound around the bristle element 21 can gather towards the dust suction port 12.

[0117] In the present disclosure, by setting the bristle element 21 on the roller brush assembly 2 to be inclined towards the dust suction port 12, foreign matters such as hair and string wound around the roller brush assembly 2 can gather towards the direction with a greater suction force during the rotation together with the bristle element 21. The hair wound around the roller brush assembly 2 is more likely to be detached, and the hair can be directly picked up by the dust suction port 12, so that the user does not need to manually clean it, improving the user experience; in addition, it can also prevent problems such as the decline in cleaning ability and the damage of motor jamming caused by hair winding around the roller brush body 23, and extend the service life of the cleaning device.

[0118] In one embodiment of the present disclosure, the dust suction port 12 may be disposed on one side of the housing 1 corresponding to the roller brush assembly 2. For example, the dust suction port 12 may be disposed on the right side of the roller brush assembly 2. At this time, the bristles 21 are configured to be inclined toward the right side of the roller brush assembly 2. Tangled objects such as hair wound around the roller brush assembly 2 can continuously receive a rightward force during the rotation with the bristles 21 and move to the right until they are picked up by the dust suction port 12.

[0119] In another embodiment of the present disclosure, as Figure 4 shown, the dust suction port 12 is disposed in the middle area of the housing 1 corresponding to the roller brush body 23. The bristles 21 include a first bristle 211 and a second bristle 212, and the first bristle 211 and the second bristle 212 are configured to extend from both ends of the roller brush body 23 to the middle area of the roller brush body 23 respectively, and are configured to be inclined toward the direction of the dust suction port 12 respectively. Referring to Figure 7 the view direction, the first bristle 211 may be the bristle disposed on the left side of the roller brush body 23, and the second bristle 212 may be the bristle disposed on the right side of the roller brush body 23. The first bristle 211 and the second bristle 212 are configured to be symmetrically disposed along the midline of the roller brush body 23 and inclined toward the middle dust suction port 12 respectively.

[0120] The hair wound around the left side of the roller brush assembly 2 can continuously receive a rightward force during the rotation with the first bristle 211 and move to the right until it reaches a position adjacent to or at the junction between the first bristle 211 and the second bristle 212 (the inclined reference part), so as to be picked up by the dust suction port 12 disposed in the middle. The hair wound around the right side of the roller brush assembly 2 can continuously receive a leftward force during the rotation with the second bristle 212 and move to the left until it reaches a position adjacent to or at the junction between the first bristle 211 and the second bristle 212 (the inclined reference part), so as to be picked up by the dust suction port 12 disposed in the middle. In this embodiment, the hair wound around the roller brush assembly 2 is gathered toward the dust suction port 12 disposed in the middle under the guiding action of the first bristle 211 and the second bristle 212. At the same time, since the central position of the dust suction port 12 has a greater suction force, the hair wound around the roller brush assembly 2 is more easily picked up when it moves to a position close to the dust suction port 12.

[0121] In another embodiment of the present disclosure, the free ends of the first bristle 211 and the second bristle 212 interfere with each other. This makes the bristles 21 continuously disposed on the surface of the roller brush body 23. When the roller brush assembly 2 rotates to clean the working surface, the continuously disposed bristles 21 can reduce the cleaning blind area, prevent the occurrence of cleaning omission areas between the first bristle 211 and the second bristle 212, and improve the cleaning effect of the roller brush assembly 2.

[0122] The cleaning device of the present disclosure has bristle elements 21 extending from one end to the other end of the roller brush body 23. That is to say, the bristle elements 21 extend from the input shaft 25 of the roller brush body 23 to the position of the rotating bracket 27 at the other end, and there is no gap between them, thereby ensuring the cleaning area of the roller brush assembly 2 and reducing the missed cleaning areas.

[0123] In an embodiment of the present disclosure, the first bristles 211 and the second bristles 212 respectively include a plurality of bristle bundles arranged at intervals on the roller brush body 23. The free ends of the plurality of bristle bundles in the first bristles 211 and the second bristles 212 are configured to form a continuous line or surface. Thus, in the axial direction of the roller brush assembly 2, there are no missed cleaning areas for the bristle elements, ensuring the cleaning area of the roller brush assembly 2. Each bristle bundle is composed of multiple bristles. The bristle bundles can be fixed to the roller brush body 23 in a manner well-known to those skilled in the art, such as by implanting, gluing, sewing, or other well-known methods to those skilled in the art, and the present disclosure does not limit this here. The free ends of the bristle bundles are in a fluffy shape. In the above embodiment, the free ends of the bristle bundles near the middle of the first bristles 211 can be in contact with or partially intertwined with the free ends of the bristle bundles near the middle of the first bristles 211, but they cannot exceed each other's range.

[0124] The plurality of bristle bundles of the first bristles 211 and the second bristles 212 can be respectively configured to be spirally distributed along the X-axis direction. Since the rotation mode of the roller brush assembly 2 is continuous cyclic rotation, therefore, choosing to make the first bristles 211 and the second bristles 212 be spirally distributed in the axial direction of the roller brush body 23 can reduce the density of the first bristles 211 and the second bristles 212, reduce the usage amount of the first bristles 211 and the second bristles 212, and at the same time can ensure the cleaning effect of the first bristles 211 and the second bristles 212. In addition, the spirally distributed first bristles 211 and second bristles 212 can provide a component force for the debris, particles and other foreign objects swept up by them to move inward through the inner wall of the spiral groove, so that the foreign objects gather towards the middle position where the dust suction port 12 is located, and are more easily picked up by the dust suction port 12, improving the cleaning effect.

[0125] As an optional embodiment, with its middle area as the boundary, the structures on both sides are symmetrically distributed along its center line. That is, the first bristles 211 and the second bristles 212 are symmetrically distributed, and the following support members 22 and comb tooth assemblies 4 are also symmetrically distributed along their respective center lines. Therefore, the first bristles 211 and the second bristles 212 form a curve or surface that spirally extends on the surface of the roller brush body 23 in the axial direction of the roller brush body 23.

[0126] In one embodiment of the present disclosure, the bristle bundles can be arranged on the rotary brush body 23 through an implanting process. Multiple implanting pores can be provided on the surface of the rotary brush body 23, and the diameter of the implanting pores is the root diameter of the bristle bundles. It can be understood that the diameter of the bristle bundles gradually increases from their roots to the free ends, and the free ends of the bristle bundles can spread outwards to cover a larger cleaning area. Specifically, the diameter of the free end of the bristle bundles in the present disclosure is about twice that of their roots.

[0127] If the distance between adjacent bristle bundles is too large, the free ends of the two bristle bundles will be separated, which will cause the free ends of several bristle bundles among the first bristles 211 and the second bristles 212 not to form a continuous line or surface. Therefore, it is necessary to limit the distance between the bristle bundles, that is, the distance between the implanting pores. The distance between the implanting pores on the surface of the rotary brush body 23 can be set to be less than twice the diameter of the implanting pores themselves, or it can be understood that the distance between the roots of adjacent two bristle bundles is less than twice the root diameter of the bristle bundles. For example, when the diameter of the implanting pores is 3 mm, the distance between the implanting pores needs to be less than 6 mm. In a specific embodiment, the distance between the implanting pores can be about 4 to 5 mm. In this way, the free ends of multiple bristle bundles can form a continuous line or surface, thereby reducing the cleaning omission area and improving the cleaning effect. At the same time, the bristle bundles are not too dense, and there is a certain gap between the roots of adjacent bristle bundles, so that hair and other entanglements will not be tightly clamped between the bristle bundles, which is beneficial to the detachment of the entanglements.

[0128] In one embodiment of the present disclosure, the inclination directions of the first bristles 211 and the second bristles 212 are opposite, in order to make the free ends of several bristle bundles among the first bristles 211 and the second bristles 212 be respectively configured as continuous lines or surfaces. The free ends of the first bristles 211 and the second bristles 212 in the middle region need to have a certain interference amount, which makes the interval between the first bristles 211 and the second bristles 212 larger than the interval between the bristle bundles at other positions. If the interference amount is too large, there may be a problem of excessive clamping force at the free ends in the middle part, which is not conducive to the detachment or combing of foreign matters such as hair. For this reason, in one embodiment of the present disclosure, referring to Figure 20 , the side of the free end of the first bristles 211 adjacent to the second bristles 212 (i.e., the position shown by the reference line b in Figure 20 ) is configured not to exceed the side of the free end of the second bristles 212 away from the first bristles 211; similarly, the side of the free end of the second bristles 212 adjacent to the first bristles 211 (i.e., the position shown by the reference line a in Figure 20 ) is configured not to exceed the side of the free end of the first bristles 211 away from the second bristles 212.

[0129] In an embodiment of the present disclosure, the interval between the first bristles 211 and the second bristles 212 is less than the overall length of the comb tooth assembly 4 in the X-axis direction. Specifically, since the inclination directions of the first bristles 211 and the second bristles 212 are opposite, the bristle bundles between the two form a triangular-like region. The interval between the bristle bundle at the end of the first bristles 211 and the bristle bundle at the end of the second bristles 212 is less than the overall length of the comb tooth assembly 4 in the X-axis direction, which enables foreign matters such as hair gathered in the middle region to be combed or loosened towards the bristle bundles on both sides under the action of the comb tooth assembly 4, preventing foreign matters from gathering between the two bristle bundles at the end.

[0130] To solve the problems of the interference amount caused by the inclined setting of the bristle bundles on both sides and the excessive interval between the two bristle bundles at the ends of the first bristles 211 and the second bristles 212 in the middle region, in an embodiment of the present disclosure, a third bristle is further provided between the first bristles 211 and the second bristles 212, and the inclination angle of the third bristle is greater than the inclination angles of the first bristles 211 and the second bristles 212. The third bristle can be a bristle bundle, which can be vertically arranged on the roller brush body, for example, to transitionally connect the first bristles 211 and the second bristles 212 on both sides thereof. The third bristle can include two bristle bundles, and each bristle bundle is inclined in the directions of the first bristles 211 and the second bristles 212 respectively. The difference is that the inclination angle is larger than the inclination angles of the first bristles 211 and the second bristles 212 to achieve the transitional connection of the first bristles 211 and the second bristles 212. When the third bristle is composed of multiple bristle bundles, in the direction from the first bristles 211 and the second bristles 212 to the middle region, the inclination angles of the bristle bundles are respectively constructed to gradually increase, so as to transitionally connect the first bristles 211 and the second bristles 212 on both sides thereof. And it can ensure that the free ends of all bristle bundles are constructed into a continuous line or surface, while solving the problem of excessive interference amount caused by the opposite inclination directions of the bristle bundles.

[0131] In an embodiment of the present disclosure, the interval between the bristle bundles in the first bristles 211 and the second bristles 212 is constructed to decrease from the end of the roller brush body 23 to the middle region thereof. The interval between the bristle bundles at the outer positions is larger and looser, and the interval between the bristle bundles at the middle positions is smaller and tighter. The interval between the bristle bundles gradually becomes denser from both sides to the middle. It can be understood that when the dust suction port 12 is arranged in the middle, the suction force corresponding to the outer positions is smaller, and the suction force corresponding to the middle position is larger. The hair wound around the bristle bundles needs to move from both sides to the middle position to be picked up by the dust suction port 12. Therefore, the relatively loose arrangement of the bristle bundles at both sides is beneficial to hair untangling. The bristle bundles at both sides will not clamp the hair, and the hair can move more smoothly towards the middle position. And the relatively dense bristle bundles in the middle can improve the effect of the roller brush assembly 2 picking up dust, enhancing the cleaning effect of the cleaning device.

[0132] Reference Figure 10 The connection point of the brush bundle and the roller brush body 23 is denoted as point A, and the plane where the axial section of the roller brush body 23 passing through point A is located is denoted as plane B. In an embodiment of the present disclosure, the central axis C of the brush bundle is configured to form an angle of 0° to 80° with respect to plane B. An excessively large angle is not conducive to the axial movement of foreign objects such as hair on the roller brush assembly 2, and it may even directly wind tightly on the roller brush assembly 2. In a specific embodiment of the present disclosure, the central axis C of the brush bundle is configured to form an angle of 0° with respect to plane B, that is, the central axis of the brush bundle is located in plane B. This makes the orthographic projection of the brush bundle on the roller brush body 23 located on the axis passing through point A, so that hair is picked up near the free end of the brush, which is conducive to the smooth movement of foreign objects such as hair along the axial direction of the roller brush assembly 2, and is conducive to the hair detaching from the brush element 21 and entering the dust collection box.

[0133] In an embodiment of the present disclosure, in the X-axis direction, the angles at which the brush bundles are inclined with respect to the surface of their roller brush body 23 towards the inclined reference portion can be the same. For example, specifically, the angle between the brush bundle and the surface of the roller brush body 23 can be 45°. In another embodiment of the present disclosure, the inclination angle of the brush bundles from the end of the roller brush body 23 towards the inclined reference portion region gradually decreases. If hair continuously winds around at a certain position in the axial direction of the roller brush assembly 2, due to the friction force between the turns of hair, the hair is difficult to untangle. If the winding range of the hair in the axial direction of the roller brush assembly 2 is large, the untangling of the hair will be easier. Therefore, for the untangling of hair, to increase the speed of the hair moving along the axial direction of the roller brush assembly 2 during winding, the winding range of the hair needs to be increased. With the setting of this embodiment, since the suction force at the position far from the suction port 12 is small, making the brush bundles more inclined in the direction away from the suction port 12 can increase the speed of the hair wound on both sides of the roller brush assembly 2 moving inward, increase the winding range of the hair, and reduce the difficulty of its untangling.

[0134] In an embodiment of the present disclosure, the brush is made of a material with moderate hardness, and the diameter of a single brush is not too thick or too thin. For example, the brush bundle can be made of nylon material, and the diameter of a single brush is about 0.09 mm. If the brush bundle is too soft, the brush element 21 cannot achieve the cleaning effect. If the brush bundle is too hard, the brush element 21 will wear the working surface during the cleaning process, and may also wear the inner wall of the roller brush cavity 11; in addition, the deformation degree of the brush bundles at the edge position is insufficient, and insufficient inward elastic force can be generated to make the hair gather inward. Specifically, the brush element 21 will drive the hair wound on the roller brush assembly 2 to move towards the direction close to the suction port 12 through the elastic force generated by the deformation and then rebound during rotation. An overly hard brush bundle will cause the elastic force provided by each rebound to decrease, which is not conducive to transporting the hair.

[0135] In one embodiment of the present disclosure, the lengths of the tufts of bristles in the first bristles 211 and the second bristles 212 are configured to gradually decrease from the end of the roller brush body 23 to its middle region. The tufts of bristles at the outer positions are longer, and the tufts of bristles at the middle positions are shorter. When the dust suction port 12 is arranged in the middle, the hair wound around the tufts of bristles needs to move from both sides to the middle position to be picked up by the dust suction port 12. The longer tufts of bristles can generate a larger deformation during rotation, and the elastic force generated after each rebound is also relatively large, so that the hair wound around the roller brush assembly 2 is more likely to move inward. It can be seen that setting the longer tufts of bristles at both sides is beneficial to improving the guiding effect of the bristle element 21. It should be noted that although the tufts of bristles at the middle position are shorter, their lengths are also sufficient to contact the working surface, thus ensuring the cleaning effect of the bristle element 21.

[0136] Supporting member

[0137] Reference Figures 6 to 9 , a support member 22 is arranged on the roller brush body 23, and the support member 22 is configured to be distributed on the roller brush body 23 along the extending direction of the bristle element 21. In a specific embodiment of the present disclosure, several tufts of bristles of the first bristles 211 and the second bristles 212 in the bristle element 21 can be respectively configured to be spirally distributed along the X-axis direction, and the support member 22 is arranged in parallel with the bristle element 21, that is, the support member 22 is configured to be assembled in a V shape on the surface of the roller brush body 23, and both sides of the support member 22 extend along the X-axis direction to be respectively in a spiral shape adapted to the first bristles 211 and the second bristles 212.

[0138] The support member 22 can be a rubber strip, such as a rubber strip, a silicone strip or a plastic strip with a certain deformation ability. The support member 22 is used to support foreign matters such as debris, hair and string away from the roller brush body 23. A plurality of support members 22 can be arranged, and the plurality of support members 22 are distributed along the circumferential direction of the roller brush body 23, so that foreign matters such as hair are fully supported in the circumferential direction, and the hair can only surround the support member 22 with a larger diameter and will not be wound around the roller brush body 23. Thereby, the number of turns of winding of foreign matters such as hair can be reduced, which makes the hair not easily get stuck and is easy to separate from the roller brush assembly 2. The support member 22 provides support for the hair, making the number of turns of hair winding less, which makes the hair not easily get stuck on the roller brush assembly 2, but will be more easily separated from the roller brush assembly 2 and sucked into the dust suction port 12.

[0139] Specifically, the distance between the support member 22 and the inner wall of the roller brush cavity 11 is less than 3 mm. For a floor sweeping robot, due to size limitations, the diameter of its roller brush assembly 2 is often small. For a certain length of hair, the number of turns it winds around the roller brush of the floor sweeping robot is much larger than that around the roller brush of a vacuum cleaner-like device, which poses higher requirements for preventing hair entanglement on the roller brush of the floor sweeping robot. When the distance between the support member 22 and the inner wall of the roller brush cavity is less than 3 mm, it can ensure that the equivalent diameter formed by the roller brush body 23 and the support member 22 is the largest, thereby minimizing the number of turns of hair entanglement as much as possible.

[0140] In an embodiment of the present disclosure, the free end of the brush element 21 is configured to extend beyond the free end face of the support member 22. For example, the extending height is 0.5 - 2 mm. This can ensure the supporting effect of the brush element 21. When hair moves on the roller brush assembly 2, it is more inclined to move at the end of the brush element 21, making the movement of hair between adjacent two brush bundles smoother. At the same time, the support member 22 can prevent the difficulty of untangling caused by hair winding to the bottom of the brush bundle. At the same time, the support member 22 can enclose an air flow channel with the inner wall of the roller brush cavity 11, thereby playing a role in improving the suction of the suction port 12. The length of the support member 22 is configured not to interfere with the inner wall of the roller brush cavity 11 because the material of the support member 22 has a certain hardness. If it comes into contact with the inner wall of the roller brush cavity 11, it will generate a large frictional force during rotation, which may wear the roller brush cavity 11 or the support member 22, and also cause a large rotational resistance, thereby damaging the drive assembly 3.

[0141] When cleaning hard working surfaces such as floors and tiles, the support member 22 can be configured not to come into contact with the working surface, that is, there is a gap between it and the working surface. This is because the material of the support member 22 is harder than the brush element 21 and is prone to scraping and wearing the working surface. When cleaning soft working surfaces such as carpets and sofas, the support member 22 can be configured to interfere with the working surface. Taking the working surface as a carpet as an example: the support member 22 can penetrate into the carpet hairs and continuously beat the carpet during the rotation following the roller brush assembly 2, thereby patting out dirt such as dust and debris in the carpet, and then being swept up by the brush element 21 and picked up by the suction port 12.

[0142] In one embodiment of the present disclosure, the support member 22 is constructed to be continuously arranged along the X-axis direction. The continuously arranged support member 22 provides a continuous movement path for the hair, which is beneficial to the movement guidance of the hair. As mentioned above, the bristle element 21 includes a first bristle 211 and a second bristle 212 separated on the left and right sides. However, the support member 22 is different from the bristle element 21. The continuously arranged support member 22 has the advantage of being easier to install. In addition, since the main function of the support member 22 is to support the hair wrapped around the roller brush assembly 2, and the hair will move toward the middle during the rotation of the roller brush assembly 2, if the support member 22 is separated into two left and right pieces, it may cause the hair to get stuck in the gap between the support pieces 22 during the movement along the X-axis direction, which is not conducive to the untangling and detachment of the hair.

[0143] In one embodiment of the present disclosure, the support member 22 is provided with a recessed area 221 concave toward the surface of the roller brush body 23 at a position corresponding to the suction port 12. When hair wrapped around the support member 22 rotates with the roller brush assembly 2, the hair is gathered toward the center under the combined action of the bristle element 21 and the suction port 12. When the hair moves to the recessed area 221, the diameter of the hair wrapping around it suddenly decreases, and the hair loses support. This provides a certain amount of space for the entangled hair to expand, making it easier for the comb assembly 4 to straighten and loosen the hair, while also facilitating the hair's untangling and detachment from the roller brush assembly 2 and suction into the suction port 12. In particular, hair with a small number of entanglements, or hair that is not intertwined, suddenly loses support and can be directly detached from the roller brush assembly 2 and picked up into the dust collection box due to the greater suction force provided by the suction port 12 during the rotation of the roller brush assembly 2.

[0144] A comb tooth assembly 4 is provided at the position corresponding to the recessed area 221 of the roller brush chamber 11. The comb tooth assembly 4 is provided with a plurality of comb tooth portions spaced in sequence along the axial direction of the roller brush assembly 2. When entangled objects such as hair on the roller brush assembly 2 pass through the comb tooth assembly 4, the hair will be combed into the comb tooth grooves of two adjacent comb tooth portions and combed along the extension direction of the comb tooth portions, so that the hair passing through the comb tooth assembly 4 can be straightened and loosened, and the hair is moved as close to the suction port 12 as possible, while being wound as evenly as possible on the roller brush assembly 2 to facilitate the suction port 12 to pick up the hair. The recessed area 221 on the support member 22 provides space for the comb tooth assembly 4. Specifically, the support member 22 does not interfere with the comb tooth assembly 4. Since the material of the support member 22 is relatively hard, if it comes into contact with the comb tooth assembly 4, it will generate a loud noise during rotation, and will also cause the roller brush assembly 2 to jam. In addition, it will also wear the comb tooth assembly 4. When the roller brush assembly 2 rotates, the comb tooth assembly 4 will pass through the recessed area 221 , and the comb tooth assembly 4 will only interfere with the bristle element 21 and the hair wrapped around the support 22 , without any contact with the support 22 .

[0145] In an embodiment of the present disclosure, the recessed area 221 has a lowest point. Starting from the lowest point, the height of any support member 22 that is farther away from the starting point is not less than the height of the support member 22 that is closer to the starting point. The height of the other parts of the support member 22 except for the recessed area 221 on the roller brush body 23 is higher than the lowest point of the recessed area 221. When the recessed area 221 is arranged in the middle of the support member 22, the support member 22 presents a shape with higher ends and lower middle. Specifically, in one embodiment, the height difference between the lowest position of the recessed area 221 and the highest position of the free end face of the support member 22 is 0-2 mm.

[0146] In a specific embodiment of the present disclosure, referring to Figure 9 ① in it, the other parts of the support member 22 except for the recessed area 221 are configured to have the same height on the roller brush body 23. At this time, a recessed area 221 with a sudden height change is provided on the support member 22. When the hair moves towards the middle to the recessed area 221, the diameter of the hair winding suddenly decreases, and the hair suddenly loses support. At the moment of the mutation, there is a high probability that the comb tooth assembly 4 can hook the hair and straighten and loosen it, so that the hair can be untangled and detached from the roller brush assembly 2 and sucked in by the dust suction port 12.

[0147] In another specific embodiment of the present disclosure, referring to Figure 9 ② in it, the overall height of the support member 22 gradually decreases from the end of the roller brush body 23 to the middle area thereof, thus forming a support member 22 structure with higher ends and lower middle. In this embodiment, a recessed area 221 with a sudden height change may not be additionally provided, that is, the middle position of the support member 22 can be considered as the recessed area 221. When the hair moves towards the middle, the diameter of the hair winding gradually decreases, and the winding of the hair will tend to be loose. This improves the speed of the hair moving towards the center and further enhances the untangling effect.

[0148] In this embodiment, as shown in Figure 9 ③ in it, a recessed area 221 with a sudden height change can also be additionally provided at the center position. When the hair moves towards the middle, the diameter of the hair winding gradually decreases, and the winding of the hair will tend to be loose; when the hair moves to the recessed area 221, the diameter of the hair winding suddenly decreases, and the hair suddenly loses support. The loose hair has a high probability of being hooked by the comb tooth assembly 4 after suddenly losing support, and is straightened and loosened by the comb tooth assembly 4, so that the hair can be untangled and detached from the roller brush assembly 2 and sucked in by the dust suction port 12.

[0149] In this embodiment, as shown in Figure 9As shown by ④, compared with the concave area 221 in ①, the concave area 221 in ④ is generally arc-shaped. With such a setting, the corner positions in the concave area 221 can be eliminated, making the contour of the end face of the support member 22 smoother and avoiding the accumulation of hair at the corner positions.

[0150] In another embodiment, as Figure 9 shown by ⑤, compared with the concave area setting in ③, ⑤ also adopts an arc-shaped contour of the concave area 221 to avoid the accumulation of hair at the corner positions.

[0151] In another embodiment, as Figure 9 shown by ⑥, the height of the support member 22 gradually decreases from the end of the roller brush body 23 to its middle region, and a flat area with a constant height is formed in the middle. Similar to the situation shown by ②, in this embodiment, a structure of the support member 22 with higher ends and lower middle is also formed. During the movement of the hair at both ends towards the flat area in the middle, the diameter of the hair entanglement gradually decreases, and the entanglement of the hair will tend to become loose.

[0152] In an embodiment of the present disclosure, the hardness of the support member 22 is moderate, and it is made of a material with moderate hardness. For example, the support member 22 can be made of silicone material, or can also be made of thermoplastic polyurethane rubber (TPU) material with a Shore hardness of about 80. If the support member 22 is too soft, it will cause the support member 22 to be unable to support the hair effectively; specifically, the tightening force of the hair following the high-speed rotation of the roller brush assembly 2 is relatively large, and the too-soft support member 22 may be tightly wound by the hair and deformed, and can no longer play a supporting role. If the support member 22 is too hard, it will cause excessive noise during the rotation process and the cleaning process, and the too-hard support member 22 cannot play a role in sealing to improve the suction of the suction port 12.

[0153] In an embodiment of the present disclosure, the diameter of the roller brush assembly 2 is configured to gradually decrease from the end of the roller brush body 23 to its middle region. In this way, the hair wound thereon can be directly guided by the change in the diameter of the roller brush assembly 2 itself. The hair will tend to move towards the position with a smaller diameter during the rotation process. When the diameters of both ends of the roller brush assembly 2 are larger and the diameter in the middle is smaller, the hair will tend to move towards the middle during the rotation process.

[0154] In a specific embodiment of the present disclosure, the support member 22 may not be provided on the surface of the roller brush body 23, and the diameter of the roller brush assembly 2 depends on the roller brush body 23. The roller brush body 23 can be configured to gradually decrease from its end to its middle region, thereby providing a roller brush assembly 2 with thicker ends and thinner middle. The hair has a tendency to move towards the middle during the rotation process, and at the same time, under the combined action of the brush elements 21 and the suction port 12, the hair wound on the roller brush body 23 can move towards the middle position.

[0155] In another specific embodiment of the present disclosure, a support member 22 may be provided on the surface of the roller brush body 23. The height of the support member 22 itself may remain unchanged, and the diameter of the roller brush assembly 2 still depends on the roller brush body 23. The roller brush body 23 may be configured to gradually decrease from its end to its middle region. During rotation, the hair has a tendency to move towards the middle. At the same time, under the combined action of the brush elements 21 and the suction port 12, the hair wound around the support member 22 can move towards the middle position.

[0156] In another specific embodiment of the present disclosure, a support member 22 may be provided on the surface of the roller brush body 23, and the support member 22 is configured to gradually decrease from the end position of the roller brush body 23 to the middle region. At this time, the diameter of the roller brush assembly 2 depends on the height of the support member 22. During rotation, the hair has a tendency to move towards the middle. At the same time, under the combined action of the brush elements 21 and the suction port 12, the hair wound around the support member 22 can move towards the middle position.

[0157] In a specific embodiment, the ratio range of the maximum height of the support member 22 to the diameter of the roller brush body 23 is 0.5 - 2. For a floor cleaning robot, it often adopts a roller brush cavity 11 that can float up and down. With such a setting, the floor cleaning robot can adapt to different shapes of the ground during autonomous cleaning, improving the cleaning effect. When the ratio range of the maximum height of the support member 22 to the diameter of the roller brush body 23 is above the minimum value, the diameter of the roller brush body 23 can be reduced, thereby reducing the weight of the roller brush body 23, improving the floating sensitivity of the floating roller brush cavity 11, and improving the cleaning effect of the robot. At the same time, the smaller weight of the roller brush assembly 2 can also reduce the driving force required by the driving assembly 3, reducing energy consumption. When the above ratio range is below the maximum value, the mechanical strength of the roller brush body 23 can be ensured.

[0158] Roller brush cover

[0159] Reference Figure 5 , in an embodiment of the present disclosure, a blocking portion 131 extending towards the brush element 21 is provided at the position of the roller brush cavity 11 corresponding to the concave region 221, and the brush element 21 corresponding to the blocking portion 131 is configured to interfere with the blocking portion 131 during rotation.

[0160] Specifically, the blocking portion 131 may be an arc-shaped flange provided on the roller brush cover 13. The arc-shaped flange is provided at a position on the roller brush cover 13 corresponding to the recessed area 221, so that the arc-shaped flange can extend to cooperate with the recessed area 221. That is, the blocking portion 131 extends from the position of the roller brush cover 13 towards the roller brush assembly 2 to cooperate with the recessed area 221 of the support member 22. It can be understood that when the roller brush assembly 2 rotates, the support member 22 cannot interfere with the arc-shaped flange, and the arc-shaped flange extends to the position of the recessed area 221, so that the arc-shaped flange can interfere with the brush elements 21 at the corresponding position. When the roller brush assembly 2 rotates, the blocking portion 131 will pass through the recessed area 221, and the blocking portion 131 will only interfere with the brush elements 21 and the hair wound around the support member 22, and will not come into any contact with the support member 22.

[0161] Optionally, the surface profile of the blocking portion 131 is continuous without gaps, thus preventing hair from winding around the blocking portion 131.

[0162] As the roller brush assembly 2 continues to rotate, the blocking portion 131 can beat the brush elements 21 in the middle area, apply a force to the hair wound around the roller brush assembly 2, cause the brush bundle to deform when passing through the blocking portion 131, and thus there is a probability that the brush elements 21 will throw off the hair wound around the roller brush assembly 2; in addition, the blocking portion 131 may also directly scrape off the hair wound around the roller brush assembly 2, and the hair detached from the roller brush assembly 2 can be directly picked up by the dust suction port 12. In addition, through the blocking portion 131, the middle area of the brush elements 21 can be continuously beaten, so that foreign matters such as hair gathered or tightened in the middle area of the brush elements 21 can be loosened, improving the effect of the detachment and unwinding of foreign matters such as hair. The setting of the blocking portion 131 further improves the anti-winding effect of the roller brush assembly 2 and extends the service life of the cleaning device.

[0163] As described above, the roller brush cover 13 is installed at the bottom of the housing 1 and at the opening position of the roller brush chamber 11, and the roller brush assembly 2 can be exposed from the hollow of the roller brush cover 13 to contact the working surface. The arc-shaped flange of the present disclosure can extend on a horizontal plane to cooperate with the brush elements 21 in the corresponding part; in other embodiments, the arc-shaped flange can also extend at a predetermined angle relative to the working surface, for example, extend obliquely away from the working surface or extend obliquely towards the working surface.

[0164] In an embodiment of the present disclosure, with the contact surface or contact line between the roller brush assembly 2 and the working surface as the boundary, the blocking portion 131 is disposed on one side of the roller brush cover 13 adjacent to the dust suction port 12, or on the side adjacent to the comb tooth assembly 4. Specifically, the comb tooth assembly 4 and the blocking portion 131 may be distributed on both sides of the vertical central axis of the roller brush body 23. Since the roller brush cover 13 is installed at the bottom 1 of the housing 1, the blocking portion 131 is lower than the comb tooth assembly 4 and the dust suction port 12 in the height direction. Therefore, during the rotation of the brush hair element 21 with the roller brush body 23, after the brush hair element 21 leaves the working surface, it will come into contact with the blocking portion 131 in advance. After being slapped and untangled by the blocking portion 131, it will then cooperate with the comb tooth assembly 4 during the continued rotation process to cut, loosen, and comb foreign matters such as hair located in the central region through the comb tooth assembly 4, thereby ensuring the untangling effect of foreign matters such as hair.

[0165] Comb tooth assembly

[0166] Reference Figure 4 、 Figures 11 to 15 A comb tooth assembly 4 is provided at a position of the roller brush cavity 11 corresponding to the concave area 221 of the support member 22, and the comb tooth assembly 4 is configured to interfere with the brush hair element 21 at its corresponding position. The comb tooth assembly 4 includes comb tooth portions arranged at intervals and inclined. The plurality of comb tooth portions are sequentially distributed at intervals along the axial direction of the roller brush assembly 2. When a winding object such as hair on the roller brush assembly 2 passes through the comb tooth assembly 4, the hair will be combed into the gaps, so that the hair passing through the comb tooth assembly 4 can be straightened, loosened, and moved as close as possible to the position of the dust suction port 12, and at the same time, the hair is evenly wound around the roller brush assembly 2 as much as possible to facilitate the dust suction port 12 to pick up the hair. When the roller brush assembly 2 rotates, the comb tooth assembly 4 will pass through the concave area 221, and the comb tooth assembly 4 will only interfere with the brush hair element 21 and the hair wound around the support member 22, and will not come into contact with the support member 22 at all.

[0167] In one embodiment of the present disclosure, in the X-axis direction, the end face of the comb teeth portion facing the roller brush assembly 2 is configured to gradually rise from the outside to the inside. The overall shape of the comb teeth portion is low on both sides and high in the middle. Specifically, this shape matches the concave area 221 on the support member 22. The deeper the concave area 221 is sunken near the middle position, the higher the end face of the comb teeth portion at the middle position of the comb teeth assembly 4 facing the roller brush assembly 2; conversely, the shallower the concave area 221 is sunken near the two sides, the lower the end face of the comb teeth portion at the two sides of the comb teeth assembly 4 facing the roller brush assembly 2, avoiding interference between the comb teeth assembly 4 and the support member 22. Setting the shape of the comb teeth assembly 4 to match the concave area 221 makes it easier for the comb teeth assembly 4 to capture the hair wound around the support member 22 and improves the efficiency of combing and untangling. In one embodiment of the present disclosure, the spacing range between the contour of the concave area 221 and the comb teeth assembly 4 is from 0.3 mm to 1.5 mm.

[0168] In one embodiment of the present disclosure, the comb teeth assembly 4 may only include the comb teeth portion, and the comb teeth portion may be directly provided on the inner wall of the roller brush cavity 11. In another embodiment of the present disclosure, as Figure 11 shown, the comb teeth assembly 4 includes a mounting plate 40 and the comb teeth portion provided on the mounting plate 40, and the mounting plate 40 may be provided in the roller brush cavity 11. When the roller brush assembly 2 rotates in the roller brush cavity 11, the brush elements 21 and the hair wound around the brush elements 21 can interfere with the inner wall of the roller brush cavity 11, and at the same time, they will also interfere with the comb teeth portion provided on the mounting plate 40 or the inner wall of the roller brush cavity 11.

[0169] In one embodiment of the present disclosure, the two opposite ends of the comb teeth assembly 4 are respectively denoted as the first end 43 and the second end 44, and the relationship between the inclination direction of the comb teeth portion and the rotation direction of the roller brush assembly 2 is as follows: the comb teeth portion is configured to gradually incline outward from the first end 43 pre-contacted by the brush element 21 to the second end 44. Referring to Figure 7 the view direction, when the roller brush assembly 2 is working normally, it can drive the brush element 21 to rotate upward, and the brush element 21 can interfere with the comb teeth portion during the rotation process. It pre-contacts the first end 43 below the comb teeth portion (referring to Figure 13 the view direction), that is, the end where the comb teeth portion extends outward; and the other end corresponding to it is the second end 44.

[0170] In one embodiment of the present disclosure, referring to Figure 13, define the central axis of the comb tooth assembly 4 as axis W. For a comb tooth portion on the comb tooth assembly 4, its first end 43 is closer to axis W than the second end 44. Thus, the inclination direction of the comb tooth portion is that the first end 43 inclines towards the direction closer to axis W. In this embodiment, the dust suction port 12 is arranged at the central position, and axis W is the central axis of the dust suction port 12. The first end 43 of the comb tooth portion is configured to incline towards the direction closer to the central axis of the dust suction port 12.

[0171] In an embodiment of the present disclosure, the comb tooth portion extends gradually away from the brush element 21 from the first end 43 to the second end 44. The comb tooth portion becomes shorter in height from the first end 43 to the second end 44 and is arc-connected between the first end 43 and the second end 44, so that the side of the comb tooth assembly 4 facing the roller brush assembly 2 is arc-shaped, and the arc-shaped comb tooth assembly 4 can be adapted to the surface of the roller brush assembly 2. The first end 43 of the comb tooth portion closer to the brush element 21 can interfere with the rotating brush element 21 in advance and hook or comb the hair wound around the support member 22. The higher first end 43 of the comb tooth portion makes it easier for the comb tooth portion to capture the hair. As the roller brush assembly 2 rotates, the brush element 21 can slide along the direction from the first end 43 to the second end 44, and at the same time drive the hair wound around the support member 22 to be combed into the gap between adjacent comb tooth portions, so that the comb tooth portion plays a role in loosening the hair. The shorter second end 44 of the comb tooth portion facilitates the separation of the hair from the comb tooth assembly 4. The loosened hair will not be wound around the comb tooth assembly 4, but can be picked up by the dust suction port 12 after separating from the comb tooth assembly 4, or re-wound back onto the roller brush assembly 2.

[0172] In an embodiment of the present disclosure, the orthographic projection of the comb tooth assembly 4 on the working surface is within the orthographic projection range of the dust suction port 12 on the working surface. Specifically, the length of the comb tooth assembly 4 does not exceed the length of the dust suction port 12. In a specific embodiment, the length of the comb tooth assembly 4 is about 1 / 2 to 4 / 3 of the dust suction port 12. It can be understood that the length of the comb tooth assembly 4 is related to the suction force of the dust suction port 12. The greater the suction force of the dust suction port 12, the longer the length of the comb tooth assembly 4 can be. This is because the dust suction port 12 needs to pick up the hair combed by the comb tooth assembly 4 in time to prevent the hair from falling back onto the roller brush assembly 2 or the working surface. For a dust suction port 12 with a traditional length, the length of the comb tooth assembly 4 is less than that of the dust suction port 12, so that the cleaning range of the dust suction port 12 can completely cover the position where the comb tooth assembly 4 is located, thus avoiding the problem that there is not enough suction force at the position corresponding to the comb tooth assembly 4 where the hair is wound. Of course, the length of the comb tooth assembly 4 cannot be too small, otherwise the comb tooth assembly 4 will not be able to achieve functions such as untangling and guiding.

[0173] The length of the comb tooth assembly 4 is less than that of the dust suction port 12, which can keep the suction force on the comb tooth assembly 4 at a relatively large level. This can not only improve the hair suction effect on the comb tooth assembly 4, but also enhance the suction effect of dirt particles in the gaps between the comb teeth. In addition, since there are no comb teeth in the part of the roller brush chamber 11 except at the position of the dust suction port 12, it can prevent hair or dirt particles from accumulating in the gaps between the comb teeth at positions far from the dust suction port 12 where the suction force is small, keeping the roller brush chamber 11 clean and reducing the frequency of maintenance of the roller brush chamber 11.

[0174] The length of the comb tooth assembly 4 can also be slightly greater than that of the dust suction port 12, and the maximum length should not exceed 4 / 3 of the dust suction port 12. The suction force of the dust suction port 12 is limited, and the suction force becomes smaller towards the middle away from the dust suction port 12. For the position where the comb tooth assembly 4 slightly exceeds the dust suction port 12, the dust suction port 12 can provide a certain suction force to pick up hair in time; however, if the length of the comb tooth assembly 4 exceeding the dust suction port 12 is too large, it will cause the two sides of the comb tooth assembly 4 not to receive sufficient suction force, and the dust suction port 12 cannot pick up the hair on both sides of the comb tooth assembly 4.

[0175] In an embodiment of the present disclosure, since the dust suction port 12 is arranged in the middle position, the comb tooth assembly 4 is also arranged in the middle of the roller brush chamber 11. It can be understood that the comb tooth assembly 4 should be arranged close to the dust suction port 12. After the comb tooth assembly 4 disentangles the hair, the dust suction port 12 needs to pick up the hair separated from the roller brush assembly 2 in time. If the comb tooth assembly 4 is too far away from the dust suction port 12, the dust suction port 12 will not be able to clean the hair on the comb tooth assembly 4. The un-picked hair may be wound around the comb tooth assembly 4, thereby reducing the disentangling and guiding effects of the comb tooth assembly 4; the un-picked hair may also fall back onto the roller brush assembly 2 or the working surface, resulting in a decrease in the cleaning effect.

[0176] In a specific embodiment of the present disclosure, the comb tooth assembly 4 is configured to be arranged close to the dust suction port 12 on the path of hair movement. When the comb tooth assembly 4 hooks the hair wound around the surface of the roller brush assembly 2 and disentangles it by combing, the longer hair may be wound around the comb teeth, and the shorter hair and the hair cut by the comb teeth during rotation may naturally fall under the action of gravity. The close arrangement of the comb tooth assembly 4 and the dust suction port 12 enables the dust suction port 12 to more easily pick up the hair disentangled by the comb tooth assembly 4. Specifically, for the hair wound around the comb teeth, since the comb tooth assembly 4 is within the suction range of the dust suction port 12, the dust suction port 12 is sufficient to pick up the hair wound around the comb teeth; for the hair that naturally falls after disentangling, since the dust suction port 12 is arranged close to the comb tooth assembly 4, these hairs can enter the suction range of the dust suction port 12 during the falling process and be picked up by the dust suction port 12.

[0177] Reference Figure 15, when the hair follows the movement of the roller brush assembly 2, the hair first passes through the dust suction port 12 and then through the comb tooth assembly 4. Specifically, the direction in which the cleaning device travels on the working surface is defined as the front. The dust suction port 12 can be arranged at the rear position in the roller brush cavity 11, and the comb tooth assembly 4 can be arranged above the dust suction port 12. During the rotation of the roller brush assembly 2, the hair on the working surface is swept up. During the process of following the rotation of the roller brush assembly 2, the hair will first pass through the dust suction port 12. Under the action of suction, some of the hair with relatively loose entanglement can be directly picked up by the dust suction port 12. Some of the hair not picked up by the dust suction port 12 will continue to follow the rotation of the roller brush assembly 2 and be combed when passing through the comb tooth assembly 4. The hair loosened, straightened, cut, and guided by the comb tooth assembly 4 can be picked up by the dust suction port 12 under the action of gravity and suction.

[0178] In another embodiment of the present disclosure, when the hair follows the movement of the roller brush assembly 2, the hair first passes through the comb tooth assembly 4 and then through the dust suction port 12. Specifically, the comb tooth assembly 4 can be arranged at the rear position in the roller brush cavity 11, and the dust suction port 12 can be arranged above the comb tooth assembly 4. During the rotation of the roller brush assembly 2, the hair on the working surface is swept up. During the process of following the rotation of the roller brush assembly 2, the hair will first pass through the comb tooth assembly 4 and be combed when passing through the comb tooth assembly 4. The hair loosened, straightened, cut, and guided by the comb tooth assembly 4 can be directly picked up by the dust suction port 12 under the action of suction.

[0179] In one embodiment of the present disclosure, the first end 43 of the comb tooth assembly 4 faces the direction of the dust suction port 12, and the second end 44 of the comb tooth assembly 4 is configured to gradually incline outward from bottom to top. Since the dust suction port 12 is arranged in the middle position, the overall sparse tooth part on the comb tooth assembly 4 is arranged in a V shape. In short, the comb tooth assembly 4 faces the suction port. Refer to Figure 13 the view direction. The sparse tooth parts arranged on the left and right sides of the midline incline to the left and right respectively, so that the first ends 43 of all the sparse tooth parts incline to the middle position, that is, face the dust suction port 12. This can make the hair untangled by the comb tooth assembly 4 more easily picked up by the dust suction port 12 under the guiding action of the sparse tooth part.

[0180] In one embodiment of the present disclosure, refer to Figure 14The specific tilting manner of the comb tooth assembly 4 is as follows: two adjacent comb tooth portions are defined as an outer comb tooth portion and an inner comb tooth portion. In the direction perpendicular to the X-axis, the first end 43 of the outer comb tooth portion is configured to be located inward of the second end 44 of the inner comb tooth portion, or the first end 43 of the outer comb tooth portion is configured to be flush with the second end 44 of the inner comb tooth portion. Specifically, for the comb tooth portion located to the left of the center line, the first end 43 of the outer comb tooth portion is configured to be located to the right of the second end 44 of the inner comb tooth portion; for the comb tooth portion located to the right of the center line, the first end 43 of the outer comb tooth portion is configured to be located to the left of the second end 44 of the inner comb tooth portion.

[0181] For example, consider the scenario where hair wrapped around the left side of the roller brush assembly 2 is snagged by the comb teeth located on the left side. The combined forces of the bristle element 21, support member 22, and suction port 12 cause the hair wrapped around the roller brush assembly 2 to move toward the center, that is, toward the right. When the hair reaches the recessed area 221 in the center of the support member 22, it suddenly loses support, leaving room for the entangled hair to expand. As the brush continues to rotate, the hair is snagged by the comb teeth on the left side. Once snagged, the hair becomes entangled in the gap between two adjacent comb teeth. The comb teeth located to the right of the hair are the inner comb teeth, while the comb teeth located to the left of the hair are the outer comb teeth. During rotation, the hair is subjected to a leftward force component from the right comb teeth, resulting in a tendency for the hair to move to the left. Furthermore, because the first end 43 of the left comb teeth is positioned to the right of the second end 44 of the right comb teeth, the hair can pass over the left comb teeth during the entanglement process. In this way, the hair can move outward in the X-axis direction under the action of the comb tooth assembly 4.

[0182] When the hair continues to move outward to a position where it is separated from the comb tooth assembly 4, the roller brush assembly 2 will pick up the hair again, and the hair that is once again wrapped around the roller brush assembly 2 can move back to the middle position. During the above process, the hair will repeatedly wrap around the comb tooth assembly 4 and the roller brush assembly 2, causing the hair to reciprocate in the X-axis direction within the comb tooth assembly 4. Each time the hair is combed by the comb tooth assembly 4, there is a chance that the hair will be picked up by the dust suction port 12. Even if the hair is not picked up this time, there will be many more opportunities for the hair to be picked up during the reciprocating motion. The present disclosure increases the probability of the hair being picked up by the dust suction port 12 by tilting the comb tooth assembly 4 so that the hair can move toward the dust suction port 12 in the X-axis direction.

[0183] In one embodiment of the present disclosure, reference Figure 11, the comb tooth part includes a first tooth part 41 and a second tooth part 42 arranged at intervals. In a direction opposite to the rotation direction of the roller brush assembly 2, the first end 43 of the first tooth part 41 is configured to protrude beyond the first end 43 of the second tooth part 42. The first ends 43 of the first tooth part 41 and the second tooth part 42 are respectively configured to be located on the movement path of the brush element 21, so that when the hair wound on the brush element 21 moves to the first ends 43 of the first tooth part 41 and the second tooth part 42 along with the roller brush assembly 2, it can be combed, loosened, and transported by the first tooth part 41 and the second tooth part 42.

[0184] In a direction opposite to the rotation direction of the roller brush assembly 2, the first end of the first tooth part 41 is configured to protrude beyond the first end 43 of the second tooth part 42. The first end 43 of the first tooth part 41 and the first end 43 of the second tooth 42 part both extend from their connection positions in a direction opposite to the rotation direction of the roller brush assembly 2, so that the first end 43 of the first tooth part 41 and the first end 43 of the second tooth part 42 can guide the hair on the roller brush assembly 2 to comb and loosen the hair during rotation. The first end 43 of the first tooth part 41 is configured to protrude beyond the first end 43 of the second tooth part 42, which enables the roller brush assembly 2 to rotate. When the brush element 21 rotates in a cycle, after passing through the working surface, it will first contact the first end 43 of the first tooth part 41, and then continue to rotate to contact the first end 43 of the second tooth part 42. Thus, the first tooth part 41 can pre - straighten and / or cut some messy hair in advance.

[0185] In an embodiment of the present disclosure, the end surface of the first end 43 of the first tooth part 41 is configured to extend in a direction deviating from the rotation circumference of the roller brush assembly 2 relative to the end surface of the first end 43 of the second tooth part 42, that is, the extension direction of the first end 43 of the first tooth part 41 deviates from the rotation center axis of the roller brush body 23. This enables foreign matters such as hair on the roller brush assembly 2 to be cut off by the first end 43 of the first tooth part 41 during rotation, or to be straightened by the first end 43.

[0186] Specifically, the first tooth part 41 can play a role in hooking hair, and the hooked hair will enter the gap between the comb teeth for combing, thus preventing the hair from getting entangled and dead. In addition, the roller brush assembly 2 drives the hair wound thereon to rotate at a high speed. Therefore, the first tooth part 41 may also directly cut the hair. After being cut, the hair will no longer be wound around the roller brush assembly 2 or the comb tooth assembly 4, but can be directly cleaned by the dust suction port 12. The extension direction of the first end 43 of the second tooth part 42 is biased towards the rotation center axis of the roller brush body 23. Specifically, the first end 43 of the second tooth part 42 gradually extends away from the roller brush assembly 2 from its connection position. This enables the second tooth part 42 not to hook the hair, but only to play a guiding role, specifically for combing the hair to make the entanglement of the hair looser.

[0187] In an embodiment of the present disclosure, the end face of the first end 43 of the first tooth portion 41 is configured to face the direction of the dust suction port 12. It can also be understood that, relative to the end face of the first end 43 of the second tooth portion 42, the end face of the first end 43 of the first tooth portion 41 is configured to be closer to the direction where the dust suction port 12 is located. When the hair on the roller brush assembly 2 is hooked, straightened, loosened or rectified by the first end 43 of the first tooth portion 41, part of the hair can directly enter the dust collection box under the action of the relatively large suction force of the dust suction port 12, which is beneficial to the separation of foreign matters such as hair from the roller brush assembly 2, thereby reducing the amount of foreign matters such as hair on the roller brush assembly 2 and making the foreign matters such as hair on the roller brush assembly 2 gradually separate from the roller brush assembly 2.

[0188] In a specific embodiment of the present disclosure, all the comb tooth portions are provided as the first tooth portion 41, and the second tooth portion 42 is not provided. At this time, all the comb tooth portions have the function of hooking hair, thereby increasing the probability of the comb tooth assembly 4 capturing hair. The hair hooked by the first tooth portion 41 is wound around both the comb tooth assembly 4 and the roller brush assembly 2 at the same time, and the hair will pull the roller brush assembly 2 and cause resistance to the rotation of the roller brush assembly 2. If only one or two hairs are hooked by the comb tooth assembly 4, the resistance is not enough to affect the rotation of the roller brush assembly 2, but when the comb tooth assembly 4 hooks multiple hairs at the same time, the multiple hairs will generate a relatively large resistance, which may cause the roller brush assembly 2 to rotate stuck and cause damage to the drive assembly 3. Therefore, in this embodiment, a relatively large distance needs to be provided between adjacent first tooth portions 41, and the number of the first tooth portions 41 should not be set too many, otherwise too much hair will be wound around the comb tooth assembly 4, resulting in too large a resistance.

[0189] In another specific embodiment of the present disclosure, all the comb tooth portions are provided as the second tooth portion 42, and the first tooth portion 41 is not provided. At this time, the comb tooth portion cannot actively hook hair, but will continuously comb the hair wound on the surface of the roller brush assembly 2 like a comb. Such a combing efficiency is relatively low, but it can prevent the hair from being wound around the comb tooth assembly 4. The hair in this embodiment can be separated from the roller brush assembly 2 under the action of the suction force after being straightened and picked up by the dust suction port 12.

[0190] In another specific embodiment of the present disclosure, the comb tooth portion includes the first tooth portion 41 and the second tooth portion 42, wherein, with reference to Figure 11, the outermost comb teeth part is the first tooth part 41, and several other relatively outer comb teeth parts except the outermost comb teeth part are all second tooth parts 42. The comb teeth parts located inside are the first tooth parts 41 and the second tooth parts 42 arranged at intervals. The first tooth parts 41 and the second tooth parts 42 arranged at intervals inside can cooperate to work. The first tooth part 41 hooks the hair wound around the roller brush assembly 2, and the adjacent second tooth part 42 combs and loosens the hair, so as to facilitate the suction port 12 to suck it away. The working mode of the comb teeth parts located outside is as follows:

[0191] The two comb teeth parts located at the outermost position are set as the first tooth part 41. As can be known to those skilled in the art, the hair smoothly wound around the roller brush assembly 2 in the circumferential direction usually moves to a relatively central position following the roller brush assembly 2 before being hooked by the comb teeth assembly 4. The comb teeth parts located at the outermost are usually used to handle the hair that has just been swept up by the roller brush assembly 2 and whose extending direction is disorderly. For example, these hairs may extend along the working direction of the cleaning device, or may be vertical, at other angles or bent. The outermost first tooth part 41 needs to intercept this unwound hair and change the direction of the hair after hooking it, so that it is wound around the roller brush assembly 2 or the comb teeth assembly 4.

[0192] Several other relatively outer comb teeth parts except the outermost comb teeth part are all second tooth parts 42. Here, multiple continuously arranged second tooth parts 42 do not hook the hair, but provide a component force for the hair to move towards the suction port. As described above, a side brush is provided on the front side of the cleaning device of the present disclosure, and the side brush will sweep towards the direction where the roller brush assembly 2 is located to clean the garbage through the suction port 12. The side brush may sweep a large amount of hair at one time, and it is easy for a large amount of hair to accumulate and needs to be loosened before being picked up. Therefore, it is necessary to continuously arrange multiple second tooth parts 42 at a position close to the outside. On the one hand, it can prevent a large amount of hair from being simultaneously hooked onto the comb teeth assembly 4, resulting in the comb teeth assembly 4 being entangled and dead. On the other hand, it can also be used to cope with the scenario of cleaning a large amount of hair at one time, improving the efficiency of combing the hair.

[0193] As another optional implementation manner, the first tooth part 41 and the second tooth part 42 are arranged alternately, and the specific positions of the first tooth part 41 and the second tooth part 42 are not limited.

[0194] As another optional implementation manner, for the scheme in which the first tooth part 41 and the second tooth part 42 are arranged alternately, the interval between two adjacent first tooth parts 41 is configured to become smaller in the direction from the end of the suction port 12 to the center of the suction port 12, that is, the closer to the center of the suction port 12, the smaller the interval between the first tooth parts 41.

[0195] The gap between two adjacent first tooth portions 41 on the outer side is relatively large, thereby reducing the movement resistance of foreign matters such as hair to the middle region. Specifically, when foreign matters such as hair move towards the middle of the roller brush assembly 2, the first tooth portions 41 will block the moving hair and cut and straighten the hair during the blocking process. If the gap between the outer first tooth portions 41 is set too small, it is difficult for foreign matters such as hair to cross the first tooth portions 41 and move towards the middle region of the roller brush assembly, and will accumulate between two adjacent first tooth portions 41, which is not conducive to the untangling of hair. Especially when the cleaning device includes a side brush, the side brush is arranged on the front side of the cleaning device, and it will sweep the foreign matters such as hair on the front side to the outer region of the comb tooth assembly 4.

[0196] In the embodiment of the present disclosure, at least two second tooth portions 42 are arranged between two adjacent first tooth portions 41 on the outer side, thereby increasing the distance between two adjacent first tooth portions 41 on the outer side. Although the outermost first tooth portion 41 still has a certain blocking effect on foreign matters such as hair, when the roller brush assembly 2 rotates, other foreign matters such as hair that do not contact the first tooth portion 41 will still move towards the middle region under the action of the brush elements 21; in addition, although the first tooth portion 41 cuts and straightens the contacted hair, other parts of the same hair in the circumferential direction will still move towards the middle region under the action of the brush elements, so as to realize the straightening and loosening of the hair through this reciprocating movement.

[0197] The smaller the gap between the first tooth portions 41 is, the closer to the center of the dust suction port 12. First, there are fewer foreign matters such as hair that can move to the center position of the roller brush assembly 2. Setting the first tooth portions 41 with a smaller gap can block these hairs to a certain extent and reduce the amount of their continued movement towards the middle region. In addition, setting the first tooth portions 41 with a smaller gap can enable more first tooth portions 41 to cut and straighten the hair gathered at this position, and be picked up under the action of a larger suction force at the center position of the dust suction port 12.

[0198] In order to further illustrate the technical effects of the alternately arranged first tooth part 41 and second tooth part 42, this embodiment is compared with two other embodiments. If all the comb tooth parts are the first tooth parts 41 with a higher end face, since the end face of the first tooth part 41 is higher, the main function of the first tooth part 41 is to hook and pick up hairs deep into the bottom of the bristles. However, the gap formed between two first tooth parts 41 will become an obstacle to the movement of the hairs, preventing the hairs from further moving towards the center of the suction port 12 with the greatest suction force, and the hairs may accumulate at the position of the first tooth part 41 that hooks the hairs. If all the comb tooth parts are the second tooth parts 42 with a lower end face, since the second tooth part 42 cannot hook and pick up hairs deep into the bottom of the bristles, although the second tooth part 42 can provide a component force for the hairs to move towards the center of the suction port 12, only the hairs wound relatively loosely can continue to move towards the suction port 12. For those hairs wound tightly, due to the lack of hooking by the first tooth part 41, they still wind tightly around the roller brush assembly 2 and cannot move inward, which will also cause the accumulation of hairs. Therefore, by adopting the scheme of alternately arranging the first tooth part 41 and second tooth part 42 in this embodiment, the first tooth part 41 can hook and loosen the overly tightly wound hairs and provide a movement path through the adjacent second tooth part 42, making the hairs get closer and closer to the center of the suction port 12 with a greater suction force. If the hairs are further wound tightly during the movement, another first tooth part 41 adjacent to the second tooth part 42 can hook and loosen them, and this arrangement is repeated until the hairs are sucked away by the suction port 12.

[0199] The above embodiment describes the situation where the guiding direction of the comb tooth assembly 4 is opposite to the guiding directions of the bristle element 21 and the support member 22. At this time, the hairs moving to the position of the comb tooth assembly 4 perform reciprocating movements under the combined action of the comb tooth assembly 4, the bristle element 21, and the support member 22, increasing the distribution distance of the hairs in the axial direction of the roller brush assembly 2, that is, playing an axial loosening role for the hairs, which is beneficial to the disentanglement of the hairs.

[0200] In another embodiment of the present disclosure, the guiding direction of the comb tooth assembly 4 may be the same as the guiding directions of the bristle elements 21 and the support member 22, that is, the comb tooth assembly 4 may guide the hair in the direction of the suction port 12. Specifically, the comb teeth portion may also be arranged in an inverted V shape, and the comb tooth assembly 4 may play a guiding role opposite to that of the previous embodiment, that is, the comb tooth assembly 4 may guide the hair to the middle position where the suction port 12 is located. When the hair wound around the bristle element 21 or the support member 22 moves from both ends to the middle of the roller brush assembly 2, some of the hair will be hooked by the comb teeth portion and continue to move towards the central position under the action of the comb tooth assembly 4 until the hair moves to a position where the suction force is large enough and is picked up by the suction port 12. In this embodiment, regardless of where the hair is wound on the roller brush assembly 2, and regardless of whether the hair is wound on the bristle element 21, the support member 22, or the comb tooth assembly 4, the hair will continuously be subjected to a guiding force towards the center and move towards the center of the suction port 12 to increase the probability of the hair being picked up by the suction port 12.

[0201] When the hair moves along with the roller brush assembly 2, the hair first passes through the comb tooth assembly 4 and then through the suction port 12. Specifically, the comb tooth assembly 4 may be arranged at the rear side position in the roller brush cavity 11, and the suction port 12 may be arranged above the comb tooth assembly 4. The roller brush assembly 2 sweeps up the hair on the working surface during rotation. During the process of the hair rotating along with the roller brush assembly 2, the hair will first pass through the comb tooth assembly 4. Under the combined guiding action of the comb tooth assembly 4, the bristle elements 21 and the support member 22, the hair will move towards the center where the suction port 12 is located until the hair moves to a position where the suction force is large enough and is picked up.

[0202] In another embodiment of the present disclosure, referring to Figure 15 , when the hair moves along with the roller brush assembly 2, the hair first passes through the suction port 12 and then through the comb tooth assembly 4. Specifically, the suction port 12 may be arranged at the rear side position in the roller brush cavity 11, and the comb tooth assembly 4 may be arranged above the suction port 12. The roller brush assembly 2 sweeps up the hair on the working surface during rotation. During the process of the hair rotating along with the roller brush assembly 2, the hair will first pass through the suction port 12. Under the action of the suction force and the guiding action of the bristle elements 21 and the support member 22, some of the hair can be directly picked up by the suction port 12. Some of the hair not picked up by the suction port 12 will continue to rotate along with the roller brush assembly 2 and, when passing through the comb tooth assembly 4, will move further towards the position with a larger suction force or be loosened, improving the hair picking effect.

[0203] Whole cleaning device

[0204] The above-mentioned bristle elements 21, support members 22, and comb tooth assemblies 4 together constitute the anti-tangling system of the cleaning device. Specifically, a brush roll cavity 11 and a dust suction port 12 communicating with the brush roll cavity 11 are provided on the housing 1 of the cleaning device. The length of the dust suction port 12 is configured to be less than that of the brush roll assembly 2, and the ratio range of the length of the dust suction port 12 to the length of the brush roll assembly 2 is 30%-80%. For a floor sweeping robot, due to the limitation of structural compactness, its suction force is usually smaller than that of handheld vacuum cleaners such as vacuum cleaners and floor scrubbers. Setting the ratio range of the length of the dust suction port 12 to the length of the brush roll assembly 2 below the upper limit value can ensure that the suction force generated by the negative pressure fan of the floor sweeping robot is not overly dispersed, thereby ensuring the suction effect on large particle dirt; setting the ratio range of the length of the dust suction port 12 to the length of the brush roll assembly 2 above the lower limit value can increase the coverage range of the dust suction port 12 and improve the cleaning efficiency.

[0205] For a floor sweeping robot, as an optional implementation manner, the ratio range of the length of the dust suction port 12 to the length of the brush roll assembly 2 is 50%-80%, and further, the ratio range is 65%-75%. That is to say, in the floor sweeping robot of this implementation manner, making the length of its dust suction port 12 as long as possible will be beneficial to the anti-tangling system of the present disclosure to play its role. If the hair is continuously wound around a certain position in the axial direction of the brush roll assembly 2 for multiple turns, due to the friction force between the turns of hair, it is difficult to untangle the hair. If the range of the hair winding in the axial direction of the brush roll assembly 2 is larger, the untangling of the hair will be easier. Therefore, for hair untangling, it is necessary to increase the speed of the hair moving along the axial direction of the brush roll assembly 2 during winding, so as to increase the range of hair winding. For a vacuum cleaner, when the user holds the vacuum cleaner to clean, they generally tend to align the middle part of the vacuum cleaner with the dirt. However, the floor sweeping robot moves autonomously and it is difficult for it to change its posture according to the position of the dirt. That is to say, for the brush roll of the floor sweeping robot, at any position in the axial length of the brush roll assembly 2, there is an equal probability of hair winding. And since the suction force of the floor sweeping robot is smaller than that of the vacuum cleaner, the untangling effect of the hair wound around the end of the brush roll of the floor sweeping robot needs to be further improved. In this implementation manner, by increasing the length of the dust suction port 12 relative to the brush roll assembly 2, it is ensured that the dust suction port 12 exerts sufficient suction force on the hair wound around the end of the brush roll assembly 2, increases the movement speed of the hair towards the center of the dust suction port 12, and further increases the range of the hair winding on the brush roll assembly 2, reducing the difficulty of untangling.

[0206] Due to the limitation of the total suction force of the cleaning device, the present disclosure sets the dust suction port 12 at the middle position of the housing. In this way, not only can the performance of the dust suction port 1 picking up dirt be guaranteed, but also foreign objects such as hair move from both ends of the brush roll assembly 2 towards the middle dust suction port 12, which can reduce the movement distance of foreign objects such as hair on the brush roll assembly 2 and reduce the probability of the hair being entangled and stuck on the brush roll assembly 2.

[0207] The rotary brush assembly 2 includes bristle elements 21 distributed on the rotary brush body 23. The bristle elements 21 include first bristles 211 and second bristles 212 that are inclined in opposite directions. Specifically, the first bristles 211 and the second bristles 212 are configured to extend from both ends of the rotary brush body 23 to the middle region of the rotary brush body 23, and are configured to be inclined toward the dust suction port 12. The hairs wound around the rotary brush assembly 2 are gathered toward the dust suction port 12 located in the middle under the guiding action of the first bristles 211 and the second bristles 212. At the same time, since there is a relatively large suction force at the central position of the dust suction port 12, the hairs wound around the rotary brush assembly 2 can be more easily picked up.

[0208] In an embodiment of the present disclosure, the number of support members 22 provided on the rotary brush assembly 2 is greater than the number of bristle elements 21. Specifically, four support members can be evenly spaced on the surface of the rotary brush body 23, and two bristle elements 21 are arranged oppositely. The four evenly arranged support members 22 enable the winding objects such as hairs to be fully supported in the circumferential direction, ensuring the support effect of the support members 22. The number of bristle elements 21 should not be set too many, otherwise the hairs will be wound more tightly, which is not conducive to the detachment of the hairs; the number of bristle elements 21 should not be set too few, otherwise the cleaning effect will be poor.

[0209] In an embodiment of the present disclosure, the bristle elements 21 are arranged at positions adjacent to the support members 22, and the distance between the bristle elements 21 and the support members 22 is configured to be less than 10 mm. The hairs swept by the bristle elements 21 can be supported by the support members 22 nearby. The hairs wound around the rotary brush assembly 2 are gathered toward the dust suction port 12 located in the middle under the guiding action of the first bristles 211 and the second bristles 212. Due to the nearby support action of the support members 22, the clamping force of the bristle elements 21 on the hairs wound therein is relatively small, which is conducive to the movement of the hairs toward the dust suction port 12, so as to facilitate the disentanglement of the hairs and the detachment from the bristle elements 21. In addition, an air flow passage can be formed by enclosing the bristle elements 21, the support members 22 and the rotary brush cavity 11. The relatively small distance between the bristle elements 21 and the support members 22 increases the suction force generated by the dust suction port 12 in the above air flow passage, which is conducive to the detachment of the hairs from the bristle elements 21.

[0210] The support member 22 is provided with a recessed area 221 that is concave towards the surface of the roller brush body 23 at a position corresponding to the dust suction port 12. When the hair wound around the two sides of the support member 22 rotates with the roller brush assembly 2, the hair will gather towards the middle under the combined action of the brush elements 21 and the dust suction port 12. When the hair moves to the recessed area 221, the diameter of the hair winding decreases, and the hair loses its support, thus providing a certain amount of space for the hair to stretch, facilitating the hair combing assembly 4 to straighten and loosen the hair, and at the same time facilitating the hair to unwind and detach from the roller brush assembly 2 and be sucked in by the dust suction port 12.

[0211] A hair combing assembly 4 is provided at a position of the roller brush cavity 11 corresponding to the recessed area 221 of the support member 22, and the hair combing assembly 4 is configured to interfere with the brush elements 21 at its corresponding position. When a winding such as hair on the roller brush assembly 2 passes through the hair combing assembly 4, the hair will be combed into the gaps between the comb teeth, so that the hair passing through the hair combing assembly 4 can be straightened and loosened, and wound around the roller brush assembly 2 as evenly as possible to facilitate the dust suction port 12 to pick up the hair. When the roller brush assembly 2 rotates, the hair combing assembly 4 will pass through from the recessed area 221, and the hair combing assembly 4 will only interfere with the brush elements 21 and the hair wound around the support member 22, and will not come into any contact with the support member 22.

[0212] The orthographic projection of the hair combing assembly 4 on the working surface is within the orthographic projection range of the dust suction port 12 on the working surface. Specifically, the length of the hair combing assembly 4 does not exceed the length of the dust suction port 12. In the cleaning device of the present disclosure, the comb teeth are only provided at the position of the dust suction port 12, that is, in the axial direction of the roller brush assembly 2, both ends of the hair combing assembly 4 are within the length range of the dust suction port 12, and it does not extend beyond the range of the dust suction port 12 in the axial direction, let alone extend towards both ends of the roller brush assembly 2. That is, the comb teeth only comb and loosen the hair and other foreign objects gathered in the middle area within the range of the dust suction port 12, and during the combing and loosening process, under the action of the relatively large suction force provided at the dust suction port 12, they are separated from the roller brush assembly 2 and picked up into the dust collection box through the dust suction port 12, avoiding the hair combing assembly 4 from combing the hair and other foreign objects on the roller brush assembly 2 to a position beyond the dust suction port 12 where the suction force weakens.

[0213] In an embodiment of the present disclosure, a loose portion is provided at a position where the bristle element 21 is close to the comb tooth assembly 4. When the comb tooth assembly 4 is disposed at the middle position, the loose portion may be the interval between the first bristle 211 and the second bristle 212. The interval between the first bristle 211 and the second bristle 212 is configured to be smaller than the overall length of the comb tooth assembly 4 in the X-axis direction. Since the first bristle 211 and the second bristle 212 have opposite inclination directions, the bristle bundles between the two form a triangular-like region. The interval between the bristle bundles at the end of the first bristle 211 and the bristle bundles at the end of the second bristle 212 is smaller than the overall length of the comb tooth assembly in the X-axis direction, which enables foreign matters such as hair gathered in the middle region to be combed or loosened towards the bristle bundles on both sides under the action of the comb tooth assembly, preventing foreign matters from gathering between the two bristle bundles at the end.

[0214] In an embodiment of the present disclosure, in the X-axis direction, the end face of the comb tooth portion facing the roller brush assembly 2 is configured to gradually rise from the outside to the inside. The overall shape of the comb tooth portion is low on both sides and high in the middle, and this shape matches the concave region 221 on the support member 22. The deeper the concave degree of the concave region 221 is closer to the middle position, the higher the end face of the comb tooth portion at the middle position of the comb tooth assembly 4 facing the roller brush assembly 2; conversely, the shallower the concave degree of the concave region 221 is closer to the two side positions, the lower the end face of the comb tooth portion at the two side positions of the comb tooth assembly 4 facing the roller brush assembly 2. Setting the shape of the comb tooth assembly 4 to match the concave region 221 makes it easier for the comb tooth assembly 4 to capture the hair wound around the support member 22, improving the efficiency of combing and untangling.

[0215] In an embodiment of the present disclosure, there is no interference between the support member 22 and the comb tooth assembly 4, and the gap therebetween is configured to be 0.3 - 2 mm. If the gap left between the support member 22 and the comb tooth assembly 4 is too large, the comb tooth assembly 4 will not be able to hook the hair supported on the support member 22. Theoretically, the smaller the gap between the two is, the better, which is conducive to the comb tooth assembly 4 extending into the bristle element 21 as much as possible to facilitate the combing of hair. However, due to factors such as assembly errors, the support member 22 may undergo a slight displacement during the rotation of the roller brush body 23, and the support member 22 may also undergo a certain amount of deformation after long-term use. Based on this, the gap left between the support member 22 and the comb tooth assembly 4 is at least 0.3 mm, otherwise, interference between the support member 22 and the comb teeth may occur. Since the material of the support member 22 is relatively hard, if it comes into contact with the comb tooth assembly 4, it will generate a large noise during rotation, cause the roller brush assembly 2 to rotate stuckly, and additionally wear the comb tooth assembly 4.

[0216] For the anti-tangling system composed of the bristle elements 21, the support 22, and the comb tooth assembly 4, factors such as the tilt angle of the bristle elements 21, the rotational speed of the roller brush assembly 2, the suction force of the suction port 12, and the width of the comb tooth assembly 4 need to be matched to achieve a better anti-tangling effect. The movement speed of the hair on the roller brush assembly 2 is affected by multiple factors such as the tilt angle of the bristle elements 21, the rotational speed of the roller brush assembly 2, and the suction force of the suction port 12. Specifically, the rotational speed of the roller brush assembly 2 will directly affect the magnitude of the centrifugal force acting on the hair wound thereon. The tilt angle of the bristle elements 21 can affect the thrust and elastic force provided to the hair. The suction force of the suction port 12 will affect the magnitude of the suction force acting on the hair. Under the combined action of multiple forces, the hair wound on the roller brush assembly 2 can move in the X-axis direction.

[0217] The movement speed of the hair on the roller brush assembly 2 needs to be matched with the unwinding speed of the comb tooth assembly 4 and the magnitude of the suction force of the suction port 12. For example: if the movement speed of the hair is too fast, it will cause the hair to quickly gather at the position of the suction port 12. The comb tooth assembly 4 will not have enough time to unwind these hairs, and the suction force of the suction port 12 is not sufficient to pick up these hairs, which will lead to the accumulation and entanglement of the hair, possibly causing the roller brush assembly 2 to be locked and damaging the roller brush assembly 2 and the drive assembly 3.

[0218] In the cleaning device of the present disclosure, by providing bristle elements 21 inclined toward the suction port 12 on the roller brush body 23, this enables the bristle elements 21, during the rotation of the roller brush body 23, under the guiding action of the bristle elements 21 and the action of centrifugal force, to cause foreign objects such as hair and thin lines to move in the direction of the suction port 12 on the roller brush assembly 2. Compared with the solution of providing other guiding members in the roller brush chamber 11 as a whole to guide the movement of the hair, in the cleaning device of the present disclosure, the hair and other foreign objects move under the action of the suction force of the suction port 12, centrifugal force, the guiding and elastic force of the bristle elements 21, which can prevent the hair from being caught or hooked by such similar guiding members. Additionally, even if the problem of entanglement occurs, the user can easily disassemble the roller brush assembly 2 for manual cleaning without having to manually clean the hair hanging on the guiding members.

[0219] In addition, when the roller brush assembly 2 of the cleaning device works on the working surface, foreign objects such as hair on the working surface may be wound around any position of the roller brush assembly 2, and the extending directions of these foreign objects are disorderly. For example, these hairs may extend along the working direction of the cleaning device, or may be vertical, at other angles or bent. Therefore, there is a high probability that these foreign objects first picked up by the roller brush assembly 2 will be hooked by the traditional guide, and will not move axially under the action of the guide, which will cause a large amount of foreign objects such as hair to accumulate on the guide. The cleaning device of the present disclosure relies on the movement components provided by the brush elements 21 and the suction port 12 to move foreign objects in the direction of the suction port 12, and foreign objects such as hair will naturally wind and move along the axis of the roller brush assembly 2 during the rotation of the roller brush assembly 2.

[0220] The cleaning device of the present disclosure is preferably a floor sweeping robot. Modern cleaning robots are gradually developing in the direction of miniaturization. Compared with handheld vacuum cleaners, cleaning robots have a smaller suction force, and the axial dimension and inner diameter dimension of the roller brush assembly 2 are small. For example, the suction force and the size of the roller brush assembly 2 of a handheld vacuum cleaner are usually more than twice, or even more, that of a cleaning robot. Therefore, in the application scenario of a floor sweeping robot, by setting the inclined brush elements 21, foreign objects such as hair can be moved in the direction of the suction port 12 with a greater suction force, so that the hair on the roller brush assembly 2 can be more easily detached and picked up.

[0221] Due to the limitation of the total suction force of the cleaning device, setting the suction port 12 in the middle position of the housing can not only ensure the performance of the suction port 12 in picking up dirt, but also reduce the movement distance of foreign objects such as hair on the roller brush assembly 2 when the foreign objects such as hair move from both ends of the roller brush assembly 2 to the middle suction port 12, and reduce the probability of the hair being entangled and dead on the roller brush assembly 2.

[0222] In the cleaning device of the present disclosure, the comb teeth part is only arranged at the position of the suction port 12, and it does not extend axially beyond the range of the suction port 12, and will not extend towards both ends of the roller brush assembly 2. That is, the comb teeth part only combs and loosens the foreign objects such as hair gathered in the middle area within the range of the suction port 12, and is detached from the roller brush assembly 2 under the action of the greater suction force provided at the suction port 12, and is picked up into the dust collection box through the suction port 12.

[0223] Due to the size limitation of the roller brush assembly 2, in order to reduce the number of turns of foreign objects such as hair wound around the roller brush assembly 2 and reduce the probability of foreign objects such as hair being tightly wound, the present disclosure provides a support member 22 to support these foreign objects. The support member 22 extends from one end of the roller brush assembly 2 to the other end, that is, in the axial direction of the roller brush assembly 2, the support member 22 is continuous. Even if it is not continuous, for example, the recessed area 221 in the middle of the support member extends to the surface of the roller brush body, thereby physically separating the support members 22 on both sides, but the support members 22 on both sides are aligned in their own extension directions. Compared with the traditional staggered arrangement of the support members 22 on both sides, the support member 22 of the present disclosure can make foreign objects such as hair more likely to gather towards the middle under the action of the brush elements 21 and the dust suction port 12, and can also more easily comb the foreign objects such as hair gathered in the middle towards both sides under the action of the comb tooth assembly 4, avoiding being tightly wound between the support members 22 on both sides.

[0224] In addition, when a user uses a handheld cleaning device and there is dirt on the working surface, the user will subconsciously align the center of the cleaning device with the dirty area, which is beneficial to cleaning the dirt as soon as possible. However, the cleaning robot may perform operations under its own walking control, that is, it will walk according to its own walking path, such as walking in a "bow" or "figure-eight" shape well-known to those skilled in the art. In this case, foreign objects picked up at any position of the roller brush assembly 2 can move towards the dust suction port 12 and are finally picked up by the dust suction port 12 and placed into the dust collection box. Therefore, the positional relationships and connection relationships of the various components described in the present disclosure are more applicable to self-moving cleaning devices such as cleaning robots.

[0225] The cleaning device of the present disclosure can separately provide inclined brush elements 21 so that foreign objects such as hair move axially during the rotation of the roller brush assembly 2; it can also only provide a support member 22 with a guiding function so that foreign objects such as hair move axially under the guiding action of the support member 22 during the rotation of the roller brush assembly 2; it can also be to only provide a comb tooth assembly 4 with a guiding function so that foreign objects such as hair move axially under the guiding action of the comb tooth assembly 4 during the rotation of the roller brush assembly 2. It can also be to combine the inclined brush elements 21 with the comb tooth assembly 4 with a guiding function and / or the support member 22 with a guiding function for use. That is, on the basis of the above disclosure, the above-described structures can be arbitrarily combined together to solve the problems of untangling foreign objects such as hair, how to improve the cleaning effect, and how to improve the user experience. The present disclosure will not elaborate on this one by one here.

[0226] Application Scenario 1

[0227] The cleaning device of the present disclosure can be a floor sweeping robot. In a household cleaning scenario, when the floor sweeping robot is cleaning on the ground, the roller brush assembly 2 can sweep up the hair on the ground. The hair wound around the roller brush assembly 2 needs to be cleaned in time, otherwise it will cause the cleaning ability of the roller brush assembly 2 to decline, and at the same time, it is easy to damage the roller brush assembly 2 and the drive assembly 3. The floor sweeping robot of the present disclosure can make the hair detach from the roller brush assembly 2 and be cleaned by the suction port 12. The specific working process is as follows:

[0228] After the hair is wound around the roller brush assembly 2, it can be supported on the support member 22, and under the action of the bristles element 21 and the suction force of the suction port 12, it moves along the X-axis direction towards the middle position where the suction port 12 is located.

[0229] For the bristles element 21, the distance between its free end and the inclined reference line Y is less than the distance between its fixed end and the inclined reference line Y. Each bristle bundle on the bristles element 21 is inclined towards the corresponding inclined reference line Y. Specifically, the inclined reference line Y can be located at the center position of the roller brush assembly 2. At this time, the suction port 12 can be arranged in the middle area of the housing 1 corresponding to the roller brush body 23. The bristle bundles inclined towards the inclined reference, that is, the bristle bundles inclined towards the suction port 12, can provide a component force towards the suction port 12 for the hair. In addition, during the rotation of the bristles element 21, the bristle bundles will deform every time they contact the working surface and rebound after sweeping across the working surface; when the bristle bundles deform, the hair wound on them can rub between the working surface and the bristles element 21 and receive a frictional component force towards the suction port 12; in addition, the hair is always under the suction force of the suction port 12. Under the combined action of multiple forces, the hair wound on the bristles element 21 can gather towards the suction port 12.

[0230] When the hair moves to the concave area 221 of the support member 22, the diameter of the hair winding decreases, and the hair thus loses its support, which provides a certain stretching space for the wound hair and facilitates the combing component 4 to straighten and loosen the hair.

[0231] The first tooth part 41 of the combing component 4 can hook or cut the hair. Specifically, the hair may be cut by the first tooth part 41 during the high-speed rotation process, and the cut hair can be directly cleaned by the suction port 12; the hair may not be cut, but be hooked into the space between the first tooth part 41 and the second tooth part 42 for combing and transporting, and the straightened hair can be picked up by the suction port 12 arranged at the lower position of the combing component 4.

[0232] In the present disclosure, the bristles 21 on the roller brush assembly 2 are set to be inclined towards the suction port 12, so that the hair wound around the roller brush assembly 2 can gather towards the direction where the suction port 12 is located during the rotation along with the bristles 21, and is finally picked up by the suction port 12. The hair moving axially on the roller brush assembly 2 is more likely to break away, avoiding the hair being tightly wound around the roller brush assembly 2; in addition, the hair can move towards the suction port 12 on the roller brush assembly 2, so that it can break away from the roller brush assembly 2 under the action of the greater suction force provided by the suction port 12. The floor cleaning robot of the present disclosure can minimize or avoid problems such as hair entanglement, and users no longer need to manually clean, improving the user experience; in addition, it can also prevent problems such as a decrease in cleaning ability and motor jamming damage caused by hair winding around the roller brush body 23, extending the service life of the floor cleaning robot.

[0233] Application scenario two

[0234] The cleaning device of the present disclosure can be a floor cleaning robot. In a household cleaning scenario, when the floor cleaning robot is cleaning on the ground, the roller brush assembly 2 can sweep up the hair on the ground. After the hair is wound around the roller brush assembly 2, it can be supported on the support member 22, and under the action of the bristles 21 and the suction force of the suction port 12, it moves along the X-axis direction towards the middle position where the suction port 12 is located.

[0235] When the hair moves to the position of the concave area 221 in the middle of the support member 22, the hair will suddenly lose support, and the wound hair has a certain space for stretching, and is hooked by the comb teeth part located in the middle position during the continuous rotation. After the hair is hooked, it will be wound into the gap between two adjacent comb teeth parts. During the rotation, the hair will receive a component force pushing outward from the inner comb teeth part, so the hair has a tendency to move outward; and since the first end 43 of the outer comb teeth part is configured to be located inside the second end 44 of the inner comb teeth part, the hair can cross the outer comb teeth part during the winding process. In this way, the hair can move outward in the X-axis direction under the action of the comb teeth assembly 4.

[0236] When the hair continuously moves outward to a position where it disengages from the comb teeth assembly 4, the roller brush assembly 2 will pick up the hair again, and the hair wound around the roller brush assembly 2 again can move towards the middle position again. The hair will be repeatedly wound around the comb teeth assembly 4 and the roller brush assembly 2 during the above process, and the hair will reciprocate in the X-axis direction within the range of the comb teeth assembly 4. The hair has the opportunity to be picked up by the suction port 12 every time it is combed by the comb teeth assembly 4. Even if it is not picked up this time, the hair will have many opportunities to be picked up during the reciprocating movement. By obliquely arranging the comb teeth assembly 4 in the present disclosure, the hair can reciprocate in the X-axis direction, increasing the probability of the hair being picked up by the suction port 12.

[0237] Application Scenario 3

[0238] The cleaning device of the present disclosure can be a floor sweeping robot. In a household cleaning scenario, when the floor sweeping robot is cleaning on the ground, the roller brush assembly 2 can sweep up the hair on the ground. In addition, the side brush arranged on the front side of the floor sweeping robot also sweeps towards the direction where the roller brush assembly 2 is located. The side brush may sweep in a large amount of hair at one time. At this time, these hairs need to be combed by the comb tooth assembly 4 before being picked up by the suction port 12.

[0239] Two comb tooth parts located at the outermost position of the comb tooth assembly 4 are set as the first tooth parts 41. Since the hair swept by the side brush has usually not yet wound around the roller brush assembly 2 in the circumferential direction and its extending direction is disorderly, these hairs may extend along the working direction of the cleaning device, or may be vertical, at other angles or bent. The outermost first tooth parts 41 can intercept this unwound hair and change the direction of the hair after hooking it, so that it winds around the roller brush assembly 2 or the comb tooth assembly 4.

[0240] A number of second tooth parts 42 are continuously arranged outside the comb tooth assembly 4. The second tooth parts 42 can guide and comb the hair. A large amount of hair swept by the side brush is prone to accumulation. On the one hand, these second tooth parts 42 can prevent a large amount of hair from being simultaneously hooked onto the comb tooth assembly 4, resulting in the comb tooth assembly 4 being entangled and dead; on the other hand, they can also comb a large amount of hair at one time, improving the efficiency of combing the hair. A part of the large amount of hair guided and combed by the second tooth parts 42 can be directly sucked away by the suction port 12, and a part can wind around the roller brush assembly 2 and the comb tooth assembly 4 in the circumferential direction and move back and forth in the X-axis direction until being picked up by the suction port 12.

[0241] Application Scenario 4

[0242] The cleaning device of the present disclosure can be a floor sweeping robot. In a household cleaning scenario, when the floor sweeping robot is cleaning on the carpet, the support member 22 on the roller brush assembly 2 can be configured to interfere with the carpet. The support member 22 can extend into the carpet hair and continuously beat the carpet during the process of rotating with the roller brush assembly 2, thereby patting out the dirt such as dust and debris in the carpet, and then being swept up by the brush element 21 and picked up by the suction port 12.

[0243] The embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device, characterized in that, Comprising: A housing (1) with a roller brush chamber (11) and a dust suction port (12) communicating with the roller brush chamber (11) provided thereon, the length of the dust suction port (12) being less than the length of the roller brush chamber (11); A comb tooth assembly (4) disposed within the roller brush chamber (11) and near the dust suction port (12); A roller brush assembly (2) installed in the roller brush chamber (11), the roller brush assembly (2) being configured to rotate relative to the housing (1) to clean a working surface; Wherein, the roller brush assembly (2) includes: A roller brush body (23) extending in the X-axis direction; Brush hair elements (21) having first brush hairs (211) and second brush hairs (212), the first brush hairs (211) and second brush hairs (212) being configured to incline towards the dust suction port (12) so that the hair wound around the roller brush assembly (2) can move towards the dust suction port (12) and be picked up by the dust suction port (12); Support members (22) configured to be distributed on the roller brush body (23) along the extending direction of the brush hair elements (21), the support members (22) being used to support the hair away from the roller brush body (23).

2. The cleaning device according to claim 1, wherein The first brush hairs (211) and second brush hairs (212) respectively include a plurality of brush hair bundles arranged at intervals on the roller brush body (23), and the free ends of the plurality of brush hair bundles in the first brush hairs (211) and second brush hairs (212) are respectively configured as continuous lines or surfaces.

3. The cleaning device according to claim 1, wherein The free end of the brush hair element (21) is configured to extend beyond the free end surface of the support member (22).

4. The cleaning device according to claim 1, characterized in that, The support member (22) is provided with a recessed area (221) concave towards the surface of the roller brush body (23) at a position corresponding to the dust suction port (12), and the comb tooth assembly (4) is provided at a position of the roller brush chamber (11) corresponding to the recessed area (221).

5. The cleaning device according to claim 1, wherein, The orthographic projection of the comb tooth assembly (4) on the working surface is within the orthographic projection range of the dust suction port (12) on the working surface.

6. The cleaning device according to claim 1, characterized in that, The comb tooth assembly (4) includes comb tooth parts arranged at intervals and inclined, and the two opposite ends of the comb tooth assembly (4) are respectively denoted as a first end (43) and a second end (44); the relationship between the inclination direction of the comb tooth parts and the rotation direction of the roller brush assembly (2) is as follows: the comb tooth parts are configured to gradually incline outwards from the first end (43) pre-contacted by the brush hair element (21) to the second end (44).

7. The cleaning device according to claim 6, characterized in that, The comb tooth assembly (4) is configured to be located above the dust suction port (12); the first end (43) of the comb tooth assembly (4) faces the direction of the dust suction port (12).

8. The cleaning device according to claim 6, characterized in that The comb teeth part includes a first tooth part (41) and a second tooth part (42) arranged at intervals; the extending direction of the first end (43) of the first tooth part (41) deviates from the rotation central axis of the roller brush body (23), and the extending direction of the first end (43) of the second tooth part (42) biases towards the rotation central axis of the roller brush body (23).

9. The cleaning device according to claim 6, characterized in that The comb teeth part includes a first tooth part (41) and a second tooth part (42) arranged at intervals; in the direction opposite to the rotation direction of the roller brush assembly (2), the first end (43) of the first tooth part (41) is configured to protrude from the first end (43) of the second tooth part (42).

10. The cleaning device according to claim 1, wherein A blocking part (131) extending towards the brush hair element (21) is arranged in the roller brush cavity (11), and the brush hair element (21) corresponding to the blocking part (131) is configured to interfere with the blocking part (131) during rotation, and the comb teeth assembly (4) and the blocking part (131) are distributed on both sides of the vertical central axis of the roller brush body (23).

11. The cleaning device according to claim 10, characterized in that, A roller brush card cover (13) is arranged at the opening position of the roller brush cavity (11), and the blocking part (131) is an arc-shaped flange arranged on the roller brush card cover (13).

12. The cleaning device according to claim 1, characterized in that, The length of the comb teeth assembly (4) is 1 / 2 to 4 / 3 of the dust suction port (12).

13. The cleaning device according to claim 1, characterized in that, The gap between the support member (22) and the comb teeth assembly (4) is configured to be 0.3 - 2 mm; and / or the free end of the brush hair element (21) is configured to exceed the free end face of the support member (22) by a height of 0.5 - 2 mm.

14. The cleaning device according to claim 1, wherein The support member (22) is provided with a depression area (221) concave towards the surface of the roller brush body (23) at the position corresponding to the dust suction port (12), and the height difference between the lowest position of the depression area (221) and the highest position of the free end face of the support member (22) is 0 - 2 mm.

15. A cleaning device, characterized in that, Comprising: A housing (1), on which a roller brush cavity (11) and a dust suction port (12) communicated with the roller brush cavity (11) are arranged, and the length of the dust suction port (12) is less than the length of the roller brush cavity (11); A roller brush assembly (2), both ends of the roller brush assembly (2) are respectively installed on both sides of the roller brush cavity (11), and the roller brush assembly (2) is configured to rotate relative to the housing (1) to clean the working surface; Wherein, the roller brush assembly (2) includes: A roller brush body (23) extending along the X-axis direction; Brush hair elements (21), having a first brush hair (211) and a second brush hair (212), the first brush hair (211) and the second brush hair (212) are configured to be inclined towards the direction of the dust suction port (12), so that the hair wound on the roller brush assembly (2) can move towards the direction of the dust suction port (12) and be picked up by the dust suction port (12); A support member (22), the support member (22) is configured to be distributed on the roller brush body (23) along the extending direction of the brush hair element (21), and the support member (22) is used to support the hair away from the roller brush body (23).

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