Roller brush mechanism, cleaning equipment and automatic cleaning system

Abstract

According to the roller brush mechanism, the cleaning equipment and the automatic cleaning system, by arranging the first roller brush and the second roller brush, the distance between the first roller brush and the second roller brush can be adjusted so as to adjust the sweeping range, and the sweeping range can be adjusted according to sweeping requirements. According to the technical scheme, the roller brush mechanism comprises a first roller brush and a second roller brush which are arranged side by side, the first roller brush is provided with a first end face, and the second roller brush is provided with a second end face; the states of the roller brush mechanism comprise an extending state and a containing state, and at least one of the first roller brush and the second roller brush is used for being driven by the first power mechanism to move in the rotating shaft direction of the first roller brush and the second roller brush so that the roller brush mechanism can be switched between the extending state and the containing state; the minimum distance between the first end face and the second end face in the direction of the rotating shaft in the storage state is smaller than the minimum distance between the first end face and the second end face in the direction of the rotating shaft in the extending state. The sweeper is mainly used for sweeping.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sweepers, and in particular to a roller brush mechanism, a cleaning device and an automatic cleaning system. Background Art

[0002] With the continuous development of intelligent cleaning technology, especially the gradual popularization of cleaning robots, it has helped daily cleaning work and is loved by more and more families. Cleaning robots usually integrate multiple functions, such as sweeping, mopping, environmental sensing, walking and obstacle avoidance, etc. Among them, sweeping is a very important and frequently used function of cleaning robots. The cleaning robot drives the roller brush set below it and in contact with the ground to rotate, sweeps the debris on the ground to the air outlet for collection, and cooperates with the walking of the cleaning robot to achieve a large range of cleaning.

[0003] The length of existing roller brushes is usually fixed and cannot be adjusted according to changes in the cleaning environment. However, when cleaning a narrow area, such as the area between two carpets, a shorter roller brush is required to enter. When cleaning a large area of ​​the floor or cleaning the edge close to the wall, a longer roller brush is required to achieve a larger area of ​​cleaning. The length of a fixed-length roller brush cannot be adjusted according to environmental needs, resulting in a limited cleaning environment for which the roller brush is applicable. Utility Model Content

[0004] In view of this, the utility model provides a roller brush mechanism, a cleaning device and an automatic cleaning system. By setting a first roller brush and a second roller brush, the distance between the first roller brush and the second roller brush can be adjusted according to cleaning needs, thereby adjusting the overall length and the cleaning range.

[0005] On the one hand, the utility model provides a roller brush mechanism for a cleaning device, the cleaning device comprising a first power mechanism, characterized in that the roller brush mechanism comprises: a first roller brush (100) and a second roller brush (200) arranged side by side, the first roller brush (100) and the second roller brush (200) being used to clean a surface to be cleaned;

[0006] One end of the first roller brush (100) adjacent to the second roller brush (200) is provided with a first end surface (101), and one end of the second roller brush (200) adjacent to the first roller brush (100) is provided with a second end surface (201);

[0007] The state of the roller brush mechanism includes an extended state and a retracted state, and at least one of the first roller brush (100) and the second roller brush (200) is used to move along its own rotation axis direction under the drive of the first power mechanism, so that the roller brush mechanism switches between the extended state and the retracted state; wherein, when in the retracted state, the minimum distance between the first end face (101) and the second end face (201) in the rotation axis direction is smaller than the minimum distance between the first end face (101) and the second end face (201) in the rotation axis direction when in the extended state.

[0008] On the other hand, the utility model also provides a cleaning device, comprising:

[0009] The cleaning device body, the power mechanism and the aforementioned roller brush mechanism;

[0010] The power mechanism is connected to the cleaning device body and the roller brush mechanism respectively, and is used to drive at least one of the first roller brush (100) and the second roller brush (200) to move, and to drive the first roller brush (100) and the second roller brush (200) to rotate synchronously around the rotation axis.

[0011] On the other hand, the utility model also provides an automatic cleaning system, comprising:

[0012] Base stations; and

[0013] The cleaning device of any of the above items, wherein the cleaning device is configured to selectively dock at a base station.

[0014] The utility model provides a roller brush mechanism, cleaning equipment and automatic cleaning system. By setting a first roller brush and a second roller brush, the distance between the first roller brush and the second roller brush can be adjusted according to cleaning needs, and then the overall length and the cleaning range can be adjusted. In the prior art, the length of the roller brush is usually fixed, and the length cannot be adjusted according to changes in the cleaning environment, resulting in the cleaning environment in which the roller brush is applicable being limited. Compared with the prior art, the roller brush mechanism of the present application includes a first roller brush and a second roller brush. The first roller brush and the second roller brush can be adjusted to move away from each other according to cleaning needs to increase the cleaning range that can be achieved by the first roller brush and the second roller brush as a whole. The first roller brush and the second roller brush can also be adjusted to move closer to each other according to cleaning needs to reduce the overall length of the first roller brush and the second roller brush, and then adapt to embedded cleaning in narrow areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a roller brush mechanism in a storage state provided by an embodiment of the utility model;

[0016] Figure 2 A schematic cross-sectional structure diagram of a roller brush mechanism provided by an embodiment of the utility model in a storage state at a first viewing angle;

[0017] Figure 3 A schematic cross-sectional view of a partial structure of a roller brush mechanism provided by an embodiment of the utility model in a storage state;

[0018] Figure 4 A structural schematic diagram of a roller brush mechanism provided by an embodiment of the utility model in an extended state at a first viewing angle;

[0019] Figure 5 A schematic structural diagram of a roller brush mechanism provided by an embodiment of the utility model in a second viewing angle when in an extended state;

[0020] Figure 6 A schematic diagram of the structure of a partial structure of a roller brush mechanism provided by an embodiment of the utility model in an extended state;

[0021] Figure 7 A schematic cross-sectional structure diagram of a roller brush mechanism provided by an embodiment of the utility model in an extended state at a first viewing angle;

[0022] Figure 8 for Figure 7 A partial enlarged schematic diagram of the roller brush mechanism shown;

[0023] Fig. 9 A schematic cross-sectional structure diagram of a roller brush mechanism provided by an embodiment of the utility model in an extended state at a second viewing angle;

[0024] Fig.10 A schematic diagram of the structure of another roller brush mechanism provided by an embodiment of the utility model in a storage state;

[0025] Fig.11 A schematic cross-sectional view of another roller brush mechanism in a storage state provided by an embodiment of the utility model;

[0026] Fig.12 for Fig.11 A partial enlarged schematic diagram of the roller brush mechanism shown;

[0027] Fig.13 A structural schematic diagram of another roller brush mechanism provided by an embodiment of the utility model in a first viewing angle when in an extended state;

[0028] Fig.14 A structural schematic diagram of another roller brush mechanism provided by an embodiment of the utility model in a second viewing angle when in an extended state;

[0029] Fig.15 A schematic cross-sectional view of another roller brush mechanism provided by an embodiment of the utility model in a first viewing angle when in an extended state;

[0030] Fig.16A schematic cross-sectional view of another roller brush mechanism provided by an embodiment of the utility model in a second viewing angle when in an extended state;

[0031] Fig.17 A schematic cross-sectional view of another roller brush mechanism in a storage state provided by an embodiment of the utility model;

[0032] Fig.18 A schematic cross-sectional structure diagram of another roller brush mechanism provided in an embodiment of the utility model in an extended state.

[0033] Description of Reference Numerals

[0034] The first roller brush 100, the first end face 101, the first cutting groove 102, the storage groove 103, the second roller brush 200, the second end face 201, the roller brush shaft (300), the guide tube 310, the guide tube inner cavity 311, the limiting surface 312, the guide area 3111, the clearance area 3112, the clearance groove 313, the guide rod 320, the limiting member 330, the extension rod 331, the limiting cap 332, the sealing assembly 340, the intermediate sealing body 341, the sealing ring 342, the first bracket 350, the second bracket 360, the bracket body 361, the sealing platform 362, the roller brush inner cavity 363, the end cover 370, the protective member 400, the second cutting groove 401, the storage space 10, the cutting member 500, and the elastic member (600). DETAILED DESCRIPTION

[0035] In the following description, a large number of specific details are given to provide a more thorough understanding of the technical solutions provided by the present disclosure. However, it is obvious to those skilled in the art that the technical solutions provided by the present disclosure can be implemented without one or more of these details.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0037] Now, exemplary embodiments according to the present disclosure will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present disclosure thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0038] On the one hand, if Figure 1 As shown, the utility model provides a roller brush mechanism for cleaning equipment. The cleaning equipment can be an automatic cleaning equipment, which can also be called a sweeper, an automatic cleaner, a cleaning robot, etc., which can automatically complete functions such as moving, sweeping, vacuuming, and mopping through a main controller without human operation. The cleaning equipment can also be a handheld cleaning equipment. The cleaning equipment includes an equipment body, and the outer contour of the equipment body can be various. In order to take into account stability and suitability for various scenes, such as cleaning areas under the bed, and taking into account the ability to avoid obstacles, the outer contour of the equipment body is usually a flat cylindrical structure. An installation space is provided at the chassis, and the roller brush mechanism can be rotatably arranged in the installation space and slightly protrude outside the installation space to contact the ground. A dust suction port is also provided on the chassis of the equipment body, and the dust suction port is arranged near the roller brush mechanism. The equipment body includes a driving mechanism, and the driving mechanism is at least used to drive the roller brush mechanism to rotate around the rotation axis. In one embodiment, the roller brush mechanism can belong to a wet cleaning mechanism in the cleaning equipment, and water is discharged to the roller brush mechanism through a water tank and a drainage structure, so that the roller brush mechanism is wetted to enhance the cleaning effect. During the rotation of the roller brush mechanism, the roller brush mechanism will contact the ground and gather the garbage, especially the larger garbage, near the suction port. Then the cleaning device will suck the garbage near the suction port into the recycling box to complete the cleaning process.

[0039] Specifically, the cleaning device includes a first power mechanism, such as Figure 1-9 As shown, the roller brush mechanism specifically includes: a first roller brush 100 and a second roller brush 200 arranged side by side, the first roller brush 100 and the second roller brush 200 are used to clean the surface to be cleaned;

[0040] One end of the first roller brush 100 adjacent to the second roller brush 200 is provided with a first end surface 101, and one end of the second roller brush 200 adjacent to the first roller brush 100 is provided with a second end surface 201;

[0041] The states of the roller brush mechanism include an extended state and a retracted state, and at least one of the first roller brush 100 and the second roller brush 200 is used to move along its own rotation axis direction under the drive of the first power mechanism, so that the roller brush mechanism switches between the extended state and the retracted state; wherein, when in the retracted state, the minimum distance between the first end face 101 and the second end face 201 in the rotation axis direction is smaller than the minimum distance between the first end face 101 and the second end face 201 in the rotation axis direction when in the extended state.

[0042] The roller brush mechanism may include only two roller brushes, that is, only the first roller brush 100 and the second roller brush 200, or the roller brush mechanism includes at least two roller brushes, at least two roller brushes are coaxially arranged in parallel, the first roller brush 100 and the second roller brush 200 are adjacent roller brushes in at least two roller brushes, and the number of roller brushes may be two, three, etc., which can be selected according to the required cleaning range and extension distance. The following is described by taking the first roller brush 100 and the second roller brush 200 as an example. The first roller brush 100 and the second roller brush 200 may be roller brushes with exactly the same structure, or roller brushes with different structures, such as different axial lengths. The outer contours of the roller brushes are approximately cylindrical, and the rotation axis of the roller brush is the central axis of the cylinder, which is also the rotation axis driven by the first power mechanism to rotate the roller brush mechanism. The outer diameters of the first roller brush 100 and the second roller brush 200 are the same, or there is only a slight difference, so that when the first roller brush 100 and the second roller brush 200 are coaxially arranged, they can abut the ground to the same extent to clean the ground. The first roller brush 100 and the second roller brush 200 have the same rotation axis and are arranged along the rotation axis. The first roller brush 100 and the second roller brush 200 refer to two adjacent roller brushes. In the two adjacent roller brushes, any roller brush can be used as the first roller brush 100, and the other can be used as the second roller brush 200. The first end face 101 can be arranged only at one end of the first roller brush 100 relative to the second roller brush 200, or respectively at the opposite ends of the first roller brush 100. Take the first end face 101 and the second end face 201 as an example of the end faces corresponding to the first roller brush 100 and the second roller brush 200. The first end face 101 and the second end face 201 can be a single plane, or an arc surface, or an irregular surface, such as the surface of the first end face 101 is an inwardly concave V-shaped surface composed of two planes at an angle to each other, the second end face 201 is adapted to the surface of the first end face 101 to be an outwardly convex V-shaped surface, and the first end face 101 can also be provided with a groove as needed.

[0043] When in the storage state, the minimum distance between the first end face 101 and the second end face 201 in the direction of the rotation axis is less than the minimum distance between the first end face 101 and the second end face 201 in the direction of the rotation axis when in the extended state, thereby realizing the change of the overall length of the first roller brush 100 and the second roller brush 200, and realizing the length adjustment according to the cleaning requirements. The roller brush mechanism switches between the storage state and the extended state, and the first roller brush 100 and the second roller brush 200 can be moved relative to the device body, or one of the first roller brush 100 and the second roller brush 200 can be moved relative to the device body, and the other is fixed to the device body. The first roller brush 100 and the second roller brush 200 can be connected to a power member respectively to be driven to rotate respectively, but it can be understood that the first roller brush 100 and the second roller brush 200 need to rotate synchronously. Alternatively, the first roller brush 100 and the second roller brush 200 can be connected through the roller brush shaft 300, and one of the first roller brush 100 and the second roller brush 200 is connected to the power member, and the power transmission of the rotation is carried out through the roller brush shaft 300, which will be described in detail below.

[0044] In addition, the structures of the first roller brush 100 and the second roller brush 200 can both be hollow structures to reduce weight. The first roller brush 100 and the second roller brush 200 can be soft-bristle brushes, rubber brushes, etc., and this application does not impose any restrictions.

[0045] The utility model provides a roller brush mechanism, a cleaning device and an automatic cleaning system. By setting a first roller brush and a second roller brush, the distance between the first roller brush and the second roller brush can be adjusted according to the cleaning needs, and then the overall length and the cleaning range can be adjusted. The bevel distance between the first end face and the second end face is greater than the extension distance, so that there will be no cleaning omission between the first roller brush and the second roller brush. In the prior art, the length of the roller brush is usually fixed, and the length cannot be adjusted according to the change of the cleaning environment, resulting in the limitation of the cleaning environment applicable to the roller brush. Compared with the prior art, the roller brush mechanism of the present application includes a first roller brush and a second roller brush. The first roller brush and the second roller brush can be adjusted to be away from each other according to the cleaning needs to increase the cleaning range that can be achieved by the first roller brush and the second roller brush as a whole, and the bevel distance between the first end face and the second end face is greater than the extension distance between the first roller brush and the second roller brush. The first roller brush and the second roller brush rotate synchronously, so that the cleaning areas of the first roller brush and the second roller brush have overlapping areas or are connected to each other, avoiding the problem of cleaning omissions caused by the distance between the first roller brush and the second roller brush. The first roller brush and the second roller brush can also be adjusted to be closer to each other according to cleaning needs to reduce the overall length of the first roller brush and the second roller brush, thereby adapting to embedding and cleaning in a narrower area.

[0046] In one embodiment, when in the storage state, the minimum distance between the first end face 101 and the second end face 201 in the direction of the rotation axis is 0. In the embodiment in which the first end face 101 and the second end face 201 have matching surface shapes, when in the storage state, the first end face 101 and the second end face 201 may be in surface contact, and in the embodiment in which the first end face 101 and the second end face 201 have mismatching surface shapes, the first end face 101 and the second end face 201 may be in partial contact. In the embodiment in which the first end face 101 and the second end face 201 have matching surface shapes, when in the extended state, the first end face 101 and the second end face 201 are separated, that is, the entire surface of the first end face 101 is separated from the entire surface of the second end face 201, and in the embodiment in which the first end face 101 and the second end face 201 have mismatching surface shapes, the first end face 101 and the second end face 201 may be only partially separated.

[0047] At least one of the first end face 101 and the second end face 201 is an inclined surface, or at least one of the first end face 101 and the second end face 201 is tilted relative to the rotation axis, and the angle between the first end face 101 and / or the second end face 201 and the rotation axis is less than 90 degrees, so that the first end face 101 and / or the second end face 201 has a projection on the rotation axis. When the roller brush mechanism is in the extended state, the distance between the intersection of the first end face 101 and the first rotation axis of the first roller brush 100 and the intersection of the second end face 201 and the second rotation axis of the second roller brush 200 is less than or equal to the projection length of the inclined surface on the rotation axis of the roller brush.

[0048] Among them, projection refers to the projection perpendicular to the direction of the rotation axis. It can be understood that the rotation axis is a virtual line, and the projection length on the rotation axis is a virtual length. However, when the first end face 101 and the second end face 201 are fixed, the projection length on the rotation axis is a fixed value, which can be used to guide the setting of the telescopic distance to achieve the problem of cleaning omissions in this application.

[0049] More specifically, when the length of the roller brush mechanism needs to be adjusted, the first roller brush 100 and the second roller brush 200 move away from each other. During this process, the projections of the first end face 101 and the second end face 201 on the rotation axis will move relatively until the roller brush mechanism is in an extended state. Since the distance between the intersection of the first end face 101 and the first rotation axis of the first roller brush 100 and the intersection of the second end face 201 and the second rotation axis of the second roller brush 200 is less than or equal to the projection length of the inclined surface on the rotation axis of the roller brush, that is, the distance between the first roller brush 100 and the second roller brush 200 is less than or equal to the maximum projection length of the first end face 101 or the second end face 201 on the rotation axis, the first roller brush 100 and the second roller brush 200 are moved away from each other. When the brush 100 and the second roller brush 200 rotate, the rotation space of the outer peripheral area of ​​the first roller brush 100 corresponding to the first end surface 101, and / or the rotation space of the outer peripheral area of ​​the second roller brush 200 corresponding to the second end surface 201 can cover the space between the first roller brush 100 and the second roller brush 200 that are far away from each other, and then when they are in the extended state, the contact area between the first roller brush 100 and the ground and the contact area between the second roller brush 200 and the ground overlap or just connect, thereby achieving thorough cleaning between the first roller brush 100 and the second roller brush 200, avoiding separation of the first roller brush 100 and the second roller brush 200, resulting in cleaning omissions between the first roller brush 100 and the second roller brush 200.

[0050] In one embodiment, the first end face 101 and the second end face 201 are both inclined surfaces. When the roller brush mechanism is in an extended state, the distance between the intersection of the first end face 101 and the first rotation axis of the first roller brush 100 and the intersection of the second end face 201 and the second rotation axis of the second roller brush 200 is less than or equal to the maximum length of the projection length of the first end face 101 on the first rotation axis and the projection length of the second end face 201 on the second rotation axis.

[0051] When the first end face 101 and the second end face 201 are both inclined surfaces, the three-dimensional area on the ground in contact with the first roller brush 100 and the area in contact with the second roller brush 200 will have overlapping parts, thereby achieving that the bottom surface corresponding to the space between the intersection of the first roller brush 100 and the first rotation axis of the first roller brush 100 and the intersection of the second roller brush 200 and the second rotation axis of the second roller brush 200 can be cleaned by the first roller brush 100 and the second roller brush 200 at the same time, thereby enhancing the cleaning efficiency.

[0052] In some embodiments, the first end face 101 and the second end face 201 have the same inclination, are parallel to each other and are approximately elliptical, and have the same maximum projection lengths on the rotation axis as the first end face 101 and the second end face 201. When the roller brush mechanism is in the storage state, the first end face 101 and the second end face 201 are in contact with each other, so that the first roller brush 100 and the second roller brush 200 are butted, and at this time, the projections of the first end face 101 and the second end face 201 on the rotation axis are almost overlapped.

[0053] The surface types of the inclined surface include a plane, a curved surface, a combination of multiple planes, a combination of multiple curved surfaces, or a combination of a plane and a curved surface.

[0054] In one embodiment, the roller brush mechanism includes a roller brush shaft 300, a first roller brush 100 and a second roller brush 200 are arranged axially along the roller brush shaft 300, and at least one of the first roller brush 100 and the second roller brush 200 is used to move along the extension direction of the roller brush shaft 300 under the drive of the first power mechanism to switch the roller brush mechanism between an extended state and a retracted state.

[0055] In an embodiment in which the first roller brush 100 and the second roller brush 200 are connected via a roller brush shaft 300, the roller brush shaft 300 is respectively connected to the first roller brush 100 and the second roller brush 200, the first roller brush 100 and the second roller brush 200 are circumferentially limited by the roller brush shaft 300, and one of the first roller brush 100 and the second roller brush 200 is used to rotate under the drive of the second power mechanism to drive the other of the first roller brush 100 and the second roller brush 200 to rotate synchronously via the roller brush shaft 300.

[0056] The setting of the roller brush shaft 300 can avoid the first roller brush 100 and the second roller brush 200 being driven separately, which may cause the first roller brush 100 and the second roller brush 200 to be unable to rotate completely synchronously due to control errors or mechanical errors, resulting in the phenomenon of relative movement of the first roller brush 100 and the second roller brush 200 in the circumferential direction. The setting of the roller brush shaft 300 can avoid the angular offset between the first end face 101 or the second end face 201, and avoid the situation that the first roller brush 100 and the second roller brush 200 cannot be completely docked in the storage state. The roller brush shaft 300 makes the circumferential relative position between the first roller brush 100 and the second roller brush 200 stable. Among them, the first power mechanism and the second power mechanism can act on the same roller brush, or the first power mechanism and the second power mechanism can act on different roller brushes respectively, that is, at least one of the first roller brush 100 and the second roller brush 200 is used to move along the extension direction of the roller brush shaft 300 under the drive of the first power mechanism, and the other of the first roller brush 100 and the second roller brush 200 is used to rotate under the drive of the second power mechanism.

[0057] In one embodiment, the roller brush shaft 300 includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the first roller brush 100, and the second connecting portion is connected to the second roller brush 200. At least one of the first connecting portion and the second connecting portion is used to move along its own rotation axis under the drive of the first power mechanism to drive the first roller brush 100 and the second roller brush 200 to move closer to or away from each other, thereby realizing the switching of the roller brush mechanism between a storage state and an extended state. The first connecting portion is connected to a fixed first roller brush 100, and the second connecting portion is fixedly connected to the second roller brush 200, thereby realizing a stable connection between the first roller brush 100 and the second roller brush 200 and the roller brush shaft 300. In addition to the rotational transmission function, the roller brush shaft 300 also has a guiding auxiliary function for the relative movement of the first roller brush 100 and the second roller brush 200, and the telescopic control of the first roller brush 100 and the second roller brush 200 is more convenient and accurate.

[0058] In one embodiment, the first connection part includes a guide tube 310 and a first bracket 350, the second connection part includes a guide rod 320 and a second bracket 360, the first roller brush 100 is arranged circumferentially along the first bracket 350, and the second roller brush 200 is arranged circumferentially along the second bracket 360. The first end of the guide tube 310 is connected to the first bracket 350, the guide tube 310 includes a guide tube inner cavity 311 that passes through the second end of the guide tube 310, and the second bracket 360 includes a roller brush inner cavity 363 that passes through the second end surface. The guide rod 320 is at least partially located in the roller brush inner cavity 363, and the guide rod 320 is connected to the second bracket 360, the guide tube 310 is inserted into the roller brush inner cavity 363, and the guide rod 320 is movably inserted into the guide tube inner cavity 311.

[0059] The guide cylinder 310 and the roller body of the first roller brush 100 can be integrally formed, and the guide cylinder inner cavity 311 is connected to the cavity of the first roller brush 100. The guide rod 320 and the roller body of the second roller brush 200 can be integrally formed. In one implementation, the guide rod 320 is in sliding contact with the inner wall of the guide cylinder inner cavity 311, and interacts with the inner wall of the guide cylinder inner cavity 311 in the circumferential direction, so that the guide rod 320 and the guide cylinder 310 are limited in the circumferential direction. Figure 3 As shown, the guide rod 320 may be a square rod, and the inner wall of at least a part of the guide tube inner cavity 311 is a square hole adapted to the outer wall of the guide rod 320, so that the guide rod 320 can abut against the side wall of the guide tube inner cavity 311 and be limited in the circumferential direction. The guide tube 310 may be in sliding abutment with the inner wall of the roller brush inner cavity 363, or in sliding abutment with other structures in the roller brush inner cavity 363, so that the guide tube 310 has better movement stability relative to the second roller brush 200.

[0060] Furthermore, the roller brush shaft 300 further includes at least one limit member 330, and the limit member 330 is used to define the first connection portion and the second connection portion, or the limit position of the first roller brush 100 and the second roller brush 200 in the direction of the rotation axis.

[0061] In the first embodiment, the limiter 330 is used to limit the limit position in the extended state. Specifically, the limiter 330 is connected to the guide rod 320. In the extended state, the limiter 330 contacts the limit surface 312 of the first bracket 350 to achieve axial limit. In the retracted state, the limiter 330 is separated from the limit surface 312 of the first bracket 350. Alternatively, the limiter 330 is connected to the guide rod 320. In the extended state, the limiter 330 contacts the limit surface 312 of the guide cylinder 310 to achieve axial limit. In the retracted state, the limiter 330 is separated from the limit surface 312 of the guide cylinder 310.

[0062] The limiting member 330 may be one or more. The limiting member 330 disposed on the guide rod 320 is used to move relative to the first connection portion and interact with the first connection portion. The limiting process is specifically described below by taking the limiting member 330 as an example of a bolt-like shape:

[0063] like Figure 2-3 , Figure 7-8 As shown, the limiting member 330 includes an extension rod 331 and a limiting cap 332. The first end of the extension rod 331 is connected to the guide rod 320, and the limiting cap 332 is arranged at the second end of the extension rod 331. The inner cavity 311 of the guide tube includes a guide area 3111 and a yielding area 3112. The guide area 3111 and the yielding area 3112 are arranged in a direction away from the second bracket 360 and are adjacent to each other. The connecting position of the guide area 3111 and the yielding area 3112 forms a limiting surface 312. The limiting cap 332 moves at least within the yielding area 3112. When in the extended state, the limiting cap 332 contacts the limiting surface 312 for limiting. When in the stored state, the limiting member 330 is separated from the limiting surface 312. Figure 3 As shown, the radial cross-sectional area of ​​the limiting cap 332 is larger than the guide area 3111. The guide area 3111 is a square hole that can be limited by the guide rod 320, and the clearance area 3112 is a circular hole that matches the shape of the limiting cap 332. The radial sizes of the guide area 3111 and the clearance area 3112 are different, so that a limiting surface 312 is formed between the guide area 3111 and the clearance area 3112. A threaded hole is provided at the end of the guide rod 320, and an external thread is provided on the side of the extension rod 331 opposite to the limiting cap 332, and the extension rod 331 is threadedly connected to the guide rod 320. In the storage state, Figure 2 As shown, the limiting cap 332 is away from the limiting surface 312. In the process of switching from the storage state to the extended state, the limiting cap 332 gradually approaches the limiting surface 312 until it abuts against the limiting surface 312. Figure 7-8As shown, the maximum distance that the first roller brush 100 and the second roller brush 200 can be separated from each other is limited, that is, the moving distance of the first roller brush 100 and the second roller brush 200 when switching from the storage state to the extended state is limited, so as to avoid cleaning omissions between the first roller brush 100 and the second roller brush 200 due to movement distance errors.

[0064] In the second embodiment, the limiting member 330 may also be used to limit the extreme position in the storage state, specifically, Figure 17-18 As shown, the limiting member 330 is connected to the guide rod 320, and when in the storage state, the limiting member 330 contacts the limiting surface 312 of the first bracket 350 to achieve axial limiting, and when in the extended state, the limiting member 330 is separated from the limiting surface 312 of the first bracket 350. Alternatively, the limiting member 330 is connected to the guide rod 320, and when in the storage state, the limiting member 330 contacts the limiting surface 312 of the guide cylinder 310 to achieve axial limiting, and when in the extended state, the limiting member 330 is separated from the limiting surface 312 of the guide cylinder 310.

[0065] The above-mentioned limiting surface 312 can be a limiting surface 312 formed by two regions with different inner diameters in the first embodiment, or Fig.18 As shown, a separate abutment member 351 protruding from the inner wall of the first bracket 350 or the inside of the guide cylinder 310 may also be provided, and the limiting surface 312 refers to a side wall on the abutment member 351. The limiting surface 312 may be a whole surface or only a point or an end. Fig.18 As shown, the limiting member 330 includes an extension rod 331 and a limiting cap 332. The specific structure can refer to the first embodiment. The abutment member 351 can be a bolt screwed on the first bracket 350 and protruding from the inner wall of the first bracket 350. When in the storage state, the limiting cap 332 contacts the abutment member 351 to achieve axial limitation. When in the extended state, the limiting cap 332 is separated from the abutment member 351, thereby preventing the first connection part and the second connection part from being squeezed too much against each other in the storage state.

[0066] In one embodiment, the roller brush shaft 300 further includes a sealing assembly 340, which is located in the roller brush inner cavity 363, and between the guide cylinder 310 and the inner wall of the roller brush inner cavity 363. The sealing assembly 340 is fixedly connected to the inner wall of the roller brush inner cavity 363, and the sealing assembly 340 is slidably abutted against the outer wall of the guide cylinder 310, or the sealing assembly 340 is slidably abutted against the inner wall of the roller brush inner cavity 363, and the sealing assembly 340 is fixedly connected to the outer wall of the guide cylinder 310.

[0067] By arranging the sealing assembly 340 between the guide tube 310 and the inner wall of the roller brush inner cavity 363, it is avoided that when the guide tube 310 and the inner wall of the roller brush inner cavity 363 are directly slidably abutted, there will be a gap or impurities will easily enter, resulting in unsmooth movement. The sealing assembly 340 can be bonded to the inner wall of the roller brush inner cavity 363 or the outer wall of the guide tube 310, or fixed by clamping.

[0068] In one embodiment, the sealing assembly 340 is fixedly connected to the inner wall of the roller brush inner cavity 363, the second roller brush 200 includes a support body 361 and a sealing platform 362, the roller brush mechanism also includes a protective member 400, the support body 361 includes the roller brush inner cavity 363, and the sealing platform 362 and the protective member 400 are arranged in the roller brush inner cavity 363 at intervals. For example, the sealing platform 362 is located in the roller brush inner cavity 363, the sealing platform 362 is connected to the inner wall of the roller brush inner cavity 363, the protective member 400 is at least partially located in the roller brush inner cavity 363, and is detachably connected to the second roller brush 200, and the protective member 400 is arranged at intervals from the sealing platform 362. The guide cylinder 310 slides against the sealing platform 362 and the protective member 400. The sealing assembly 340 is located between the sealing platform 362 and the protective member 400.

[0069] The sealing platform 362 is an annular surface in the roller brush inner cavity 363. The protective member 400 is detachably connected to the second roller brush 200, which makes it easy to install and replace the sealing assembly 340 and avoids the sealing assembly 340 from falling off easily due to adhesion. The following is a detailed description of the structure of a specific sealing assembly 340: the sealing assembly 340 includes a middle sealing body 341 and two sealing rings 342. The middle sealing body 341 is located between the sealing platform 362 and the protective member 400, and the two ends are respectively in contact with the sealing platform 362 and the protective member 400. One of the two sealing rings 342 is located between the middle sealing body 341 and the sealing platform 362, and the other of the two sealing rings 342 is located between the middle sealing body 341 and the protective member 400. The middle sealing body 341 and the two sealing rings 342 are both in sliding contact with the guide sleeve 310.

[0070] During installation, the protective member 400, the sealing ring 342 and the intermediate sealing body 341 are first put on the guide tube 310 in sequence, and then inserted into the roller brush inner cavity 363, the sealing ring 342 will abut the sealing platform 362, and then the protective member 400 is pushed to one side of the sealing platform 362 until the protective member 400 is connected with the second roller brush 200, and the sealing ring 342 and the intermediate sealing body 341 are squeezed, so that the guide tube 310 and the roller brush inner cavity 363 are effectively sealed. A clamping groove can be provided on the inner wall of the roller brush inner cavity 363, and a clamping joint matching the clamping groove is provided on the protective member 400, and the protective member 400 and the second roller brush 200 can be detachably clamped.

[0071] When the roller brush mechanism includes a roller brush shaft 300, during the rotation and cleaning process of the roller brush mechanism, some longer debris, such as hair, will be rolled up by the roller brush shaft 300 area between the first end face 101 and the second end face 201, and wrapped around the roller brush shaft 300, more specifically, wrapped around the outer periphery of the guide tube 310, causing the first roller brush 100 and the second roller brush 200 to be obstructed by the hair when approaching each other and unable to fully dock in the stored state.

[0072] In order to clean the hair wrapped around the outer periphery of the guide tube 310, in one embodiment, when the roller brush mechanism is in the extended state, the roller brush mechanism includes a storage space 10. The outer diameter of the area between the first end surface 101 and the second end surface 201 of the roller brush shaft 300 is smaller than the outer diameter of the first roller brush 100 and the second roller brush 200, and the first end surface 101, the second end surface 201 and the roller brush shaft 300 enclose at least a part of the storage space 10. The roller brush mechanism also includes at least one cutting member 500, the cutting member 500 is connected to at least one of the first connecting portion and the second connecting portion, and the cutting end of the cutting member 500 is located in the storage space 10, and the cutting member 500 is at least used to move and cut obstacles located in the storage space 10 when the roller brush mechanism is switched from the extended state to the storage state.

[0073] The outer diameter of the guide tube 310 is smaller than the outer diameters of the first roller brush 100 and the second roller brush 200, so that the first end face 101, the second end face 201, the end faces of the first connecting part and the second connecting part facing each other, and the outer wall of the guide tube 310 enclose a portion of the storage space 10. The hair wrapped around the outer periphery of the guide tube 310 is located in the storage space 10. There can be multiple cutting members 500, such as a cutting member 500 is respectively arranged on the outer sides of the radial sides of the guide tube 310, and the cutting member 500 can be a blade. The cutting member 500 can be arranged on the first connecting part, and the cutting end is aligned with the first bracket 350 of the second connecting part, or it can be arranged on the second connecting part, and the cutting end is aligned with the second bracket 360 of the first connecting part. In some other embodiments, the cutting member 500 may also be connected to the first roller brush 100 or the second roller brush 200, such as being connected to the first end face 101 or the second end face 201, or may also be connected to the edge or side wall of the first roller brush 100 or the second roller brush 200, so that the cutting end is located in the storage space 10 and can be moved to cut hair. The cutting member 500 may move for cutting or not. However, there is a relative displacement between the cutting member 500 and the obstacle. For example, when the cutting member 500 follows the second connection part to move relative to the first connection part, the obstacle is wound around the guide cylinder 310, and the guide cylinder 310 does not move, so that the cutting member 500 and the obstacle have relative movement, and then the obstacle is cut while moving. Alternatively, when the cutting member 500 follows the first connection part to move relative to the second connection part, the obstacle wound around the guide cylinder 310 will be blocked by the second connection part, and gradually converge to the cutting member 500, and when it reaches a certain position, the cutting member 500 will cut the obstacle. When the cutting member 500 is stationary, the obstacles will still gather toward the cutting member 500 due to the reduction of the storage space 10. When the storage space 10 is reduced to a certain extent, the cutting member 500 will cut the obstacles. The obstacles can be hair or any sundries in the storage space 10, such as earphone wires, straps, etc.

[0074] In order to make the cutting member 500 cut the obstacle more effectively and make the obstacle fall off, the cutting member 500 can cooperate with the groove so that the obstacle is subjected to a small range of reverse force, and the force applied by the cutting end is sufficient to cut the obstacle. The following examples are given of two specific ways of setting the cutting member 500. It can be understood that the setting of the cutting member 500 is not limited to the following embodiments:

[0075] First, if Figure 1-9As shown, the cutting end of the cutting member 500 protrudes from the end surface of the second connection part on the side opposite to the first connection part, and the end surface of the first connection part on the side opposite to the second connection part is provided with a first cutting groove 102 axially opposite to the cutting member 500; and / or, the cutting end of the cutting member 500 protrudes from the end surface of the first connection part on the side opposite to the second connection part, and the end surface of the second connection part on the side opposite to the first connection part is provided with a first cutting groove 102 axially opposite to the cutting member 500. The first cutting groove 102 constitutes at least a part of the storage space 10, and when the roller brush mechanism is in the storage state, at least the cutting end is embedded in the first cutting groove 102.

[0076] Take the case where the cutting member 500 is connected to the second connection part, and the cutting end of the cutting member 500 protrudes from the end face of the second connection part relative to the first connection part, and the first cutting groove 102 is provided on the end face of the first connection part relative to the second connection part. In the process of switching the roller brush mechanism from the extended state to the stored state, the cutting member 500 will move toward the end face of the first connection part relative to the second connection part, or in other words, the cutting member 500 will push the obstacles in the storage space 10 toward the first cutting groove 102. In the process of pushing the obstacles to move, some obstacles that are easier to cut will be cut off, while the other part will be pushed to the first cutting groove 102. The edge of the first cutting groove 102 will limit the continued movement of the obstacles. Under the reverse force of the cutting member 500 and the edge of the first cutting groove 102, the cutting force on the obstacles will increase, and then they will be cut off. The first cutting groove 102 also has the function of giving way to the cutting member 500.

[0077] Furthermore, in the embodiment where the roller brush mechanism further includes a protective member 400, the protective member 400 is used not only to fix the sealing assembly 340, but also to shield the cutting member 500 at the periphery of the cutting member 500, thereby avoiding the risk of the cutting member 500 being exposed and easily touched by mistake. Specifically, the protective member 400 is connected to the first connecting member and / or the second connecting portion, the cutting member 500 is fixed to the protective member 400, the end of the protective member 400 is higher than the cutting end of the cutting member 500, and in the storage state, the end of the protective member 400 and the cutting end of the cutting member 500 are both embedded in the first cutting groove 102.

[0078] The protective member 400 is annular, and the first axial end thereof extends into the roller brush inner cavity 363. The protective member 400 is provided with two protrusions that are approximately plate-shaped, and the top ends of the protrusions constitute the second end of the protective member 400. The protrusions are located outside the two cutting members 500, and the height of the second end protruding from the first connecting member and / or the second connecting portion is greater than the protruding height of the cutting member 500, thereby shielding the connecting end of the cutting member 500 to prevent accidental contact and injury to people.

[0079] Second, if Figure 10-16As shown, the roller brush mechanism further includes a protective member 400, one of the first connection part and the second connection part is provided with the protective member 400, and the other of the first connection part and the second connection part is provided with a cutting member 500. The protective member 400 is provided with a second cutting groove 401 axially opposite to the cutting member 500, and the second cutting groove 401 constitutes a partial area of ​​the storage space 10, and in the storage state, the cutting member 500 is partially embedded in the second cutting groove 401.

[0080] A receiving groove 103 is provided on the first connection part, the cutting member 500 is connected to the first connection part, and the protective member 400 is connected to the second connection part. The receiving groove 103 is an annular receiving groove, and the protective member 400 is an annular protective member, and both protrude from the end surface of the second connection part relative to the first connection part in the circumferential direction. In the process of switching the roller brush mechanism from the extended state to the stored state, the protective member 400 will move toward the first connection part, or in other words, the protective member 400 will push the obstacles in the storage space 10 toward the receiving groove 103, and the obstacles will be gradually concentrated and interact with the cutting member 500 in the receiving groove 103. The edge of the second cutting groove 401 will continue to push the obstacles to move relative to the cutting member 500, and under the reverse force of the cutting member 500 and the edge of the second cutting groove 401, the cutting force on the obstacles will increase, and then they will be cut off. The second cutting groove 401 also has the function of giving way to the cutting member 500 , while the groove wall of the receiving groove 103 has the function of shielding the cutting member 500 , thereby preventing the cutting member 500 from being exposed and easily touched by mistake.

[0081] In one embodiment, hair and the like may be wrapped around the guide cylinder 310 and may be wrapped closely against the side wall of the guide cylinder 310, and the cutting member 500 and the guide cylinder 310 need to move relative to each other, resulting in a gap between the cutting member 500 and the side wall of the guide cylinder 310. Hair is easily embedded in the gap, resulting in missing cutting, which affects the relative movement smoothness between the first roller brush 100 and the second roller brush 200. In order to solve the above problem, in one embodiment, as Figure 6 As shown, a clearance groove 313 is provided on the roller brush shaft 300, specifically, a clearance groove 313 is provided on the outer wall of the guide tube 310. The clearance groove 313 extends in the direction of the rotation axis, and the clearance groove 313 corresponds to the cutting member 500. The cutting end of the cutting member 500 is located in both the storage space 10 and the clearance groove 313. When the cutting member 500 is a blade, the blade extends from the outside of the clearance groove 313 to the inside of the clearance groove 313. When the roller brush mechanism switches from the extended state to the storage state, the cutting member 500 will move along the clearance groove 313, and the blade will cut obstacles at the opening of the clearance groove 313. Even if the obstacles are tightly wrapped around the guide tube 310, they can still be effectively cut.

[0082] In one embodiment, the roller brush mechanism also includes an elastic member 600, which can be used to apply an elastic force to the first connection part and the second connection part so that the first connection part and the second connection part move away from each other, or the elastic member 600 can be used to apply an elastic force to the first connection part and the second connection part so that the first connection part and the second connection part move closer to each other. These two embodiments are described in detail below.

[0083] In the first embodiment, the elastic member 600 is directly or indirectly connected to at least one of the first connection portion and the second connection portion, and when the roller brush mechanism switches from the extended state to the retracted state, the elastic member 600 stores energy. When the roller brush mechanism switches from the retracted state to the extended state, the elastic member 600 releases the stored energy.

[0084] The elastic member 600 is used to apply an elastic force that causes the first roller brush 100 and the second roller brush 200, or the first connection part and the second connection part, to move away from each other, so that the first connection part and the second connection part move away from each other and switch to the extended state. The elastic member 600 can increase the smoothness when the storage state is switched to the extended state. If a telescopic motor is used, the output end of the telescopic motor abuts against the end of the first connection part, and a force is applied toward the second connection part. When the extended state is switched to the storage state, the output end of the telescopic motor moves in a direction close to the second connection part, and then the elastic member 600 is compressed to store energy. When the storage state is switched to the extended state, the output end of the telescopic motor retracts in a direction away from the second connection part, and the first connection part will follow the output end to move away from the second connection part under the action of the elastic member 600. The power mechanism is described in more detail below.

[0085] In a more specific embodiment, such as in an embodiment where the first connection portion includes a guide cylinder 310 and a first bracket 350, and the second connection portion includes a guide rod 320 and a second bracket 360, the elastic member 600 may be disposed in the roller brush inner cavity 363 and located between the bottom wall of the roller brush inner cavity 363 and the guide cylinder 310, and then when the guide cylinder 310 moves relative to the roller brush inner cavity 363, the elastic member 600 is compressed to different degrees. In this embodiment, the limit member 330 is used to limit the extreme position in the extended state, that is, in the extended state, the limit member 330 contacts the first bracket 350 or the guide cylinder 310 to achieve axial limitation.

[0086] In the second embodiment, if Figure 17-18 As shown, the elastic member 600 is directly or indirectly connected to at least one of the first connecting part and the second connecting part. When the roller brush mechanism switches from the storage state to the extended state, the elastic member 600 stores energy. When the extended state switches to the storage state, the elastic member 600 releases the stored energy.

[0087] The elastic member 600 is used to apply an elastic force that causes the first roller brush 100 and the second roller brush 200, or the first connection part and the second connection part, to move closer to each other, so that the first connection part and the second connection part are close to each other and switched to the storage state. The elastic member 600 can achieve increased stability in the storage state. If a telescopic motor is used, the output end of the telescopic motor fixes the end of the first connection part and applies a force toward the second connection part. When the extended state is switched to the storage state, the output end of the telescopic motor moves in a direction close to the second connection part, and then the elastic member 600 releases energy. At this time, the reaction force of the elastic member 600 on the telescopic motor is small, which prevents the telescopic motor from being damaged by being under a large load for a long time. When the storage state is switched to the extended state, the output end of the telescopic motor retracts in a direction away from the second connection part, and the elastic member 600 will be stretched to store energy.

[0088] In a more specific embodiment, such as when the first connection portion includes a guide cylinder 310 and a first bracket 350, and the second connection portion includes a guide rod 320 and a second bracket 360, the elastic member 600 may be disposed between the guide rod 320 and the guide cylinder 310, or between the guide rod 320 and the first bracket 350, and the elastic member 600 may be a tensile energy storage or a compressive energy storage. Furthermore, in an embodiment where the limiting member 330 includes an extension rod 331 and a limiting cap 332, the elastic member 600 may be disposed between the limiting cap 332 and the limiting surface 312 of the guide cylinder 310, and when the guide rod 320 moves relative to the guide cylinder 310, the elastic member 600 is compressed to different degrees. The elastic member 600 applies an elastic force to the limiting cap 332 to move away from the second bracket 360, thereby causing the first connection portion and the second connection portion to approach each other until they are in the storage position. In this embodiment, the limiting member 330 is used to limit the extreme position in the storage state, such as Figure 17-18 As shown, when in the storage state, the limiting member 330 contacts the limiting surface 312 of the first bracket 350 or the guide cylinder 310 to achieve axial limiting, or the limiting cap 332 contacts the abutting member 351, thereby limiting.

[0089] On the other hand, the utility model also provides a cleaning device, comprising: a cleaning device body, a power mechanism, and a roller brush mechanism as described above. The power mechanism is connected to the cleaning device body and the roller brush mechanism respectively, and the power mechanism is used to drive at least one of the first roller brush 100 and the second roller brush 200 to move along the rotation axis direction, and drive the first roller brush 100 and the second roller brush 200 to rotate synchronously around the rotation axis.

[0090] The cleaning device includes any of the aforementioned roller brush mechanisms, including the advantages of any of the roller brush mechanisms, which will not be described in detail here. The following are two specific implementation methods of the power mechanism:

[0091] First, the power mechanism includes a first rotation driving member, a second rotation driving member and a position driving member. The first rotation driving member and the second rotation driving member are respectively connected to the first roller brush 100 and the second roller brush 200, and are used to drive the first roller brush 100 and the second roller brush 200 to rotate synchronously around the axis. The position driving member is connected to at least one of the first roller brush 100 and the second roller brush 200 to drive at least one of the first roller brush 100 and the second roller brush 200 to move relative to each other along the axis.

[0092] In an embodiment where the first roller brush 100 and the second roller brush 200 are two independent roller brushes without a roller brush shaft 300 therebetween, the first roller brush 100 and the second roller brush 200 need to be driven to rotate separately. The first rotation drive member and the second rotation drive member can be the same drive motor, which can synchronously drive the first roller brush 100 and the second roller brush 200 to rotate. There can be one or two position drive members, and a single position drive member can drive either the first roller brush 100 or the second roller brush 200 to move axially relative to the other. If the position of the second roller brush 200 is fixed relative to the cleaning device body, the position drive member drives the first roller brush 100 and the first rotation drive member corresponding to the first roller brush 100 to move relative to the cleaning device body, thereby realizing the switching between the storage state and the extended state.

[0093] Secondly, the power mechanism includes a rotation drive member and a position drive member. The rotation drive member is connected to the first roller brush 100 and the second roller brush 200, or one of the first connecting part and the second connecting part, and the rotation drive member is used to drive the first roller brush 100 and the second roller brush 200, or one of the first connecting part and the second connecting part to rotate, so as to drive the other of the first roller brush 100 and the second roller brush 200 to rotate synchronously through the roller brush shaft 300 of the roller brush mechanism. The position drive member is connected to the other of the first roller brush 100 and the second roller brush 200 to drive the other of the first roller brush 100 and the second roller brush 200 to move relative to each other along the direction of the rotation axis.

[0094] In the embodiment where the first roller brush 100 and the second roller brush 200 are connected by the roller brush shaft 300, only one of the first roller brush 100 and the second roller brush 200, or the first connecting portion and the second connecting portion can be driven to rotate. It can be achieved to avoid the rotation error caused by the single drive, and avoid the driving burden of the position driving member caused by the need to move the rotating driving member. Specifically, the rotating driving member is connected to the second roller brush 200 or the second connecting portion, and is used to drive the second roller brush 200 to rotate, and the second roller brush 200 then drives the first roller brush 100 to rotate through the circumferential limit of the roller brush shaft 300. There is one position driving member, which is connected to the first roller brush 100 or the first connecting portion, and is used to drive the first roller brush 100 to move axially relative to the second roller brush 200, while the positions of the second roller brush 200 and the rotating driving member are fixed relative to the cleaning device body. In the embodiment in which the roller brush mechanism includes the elastic member 600, the position driving member may be a telescopic motor, the output end of the telescopic motor is slidably plugged into the end of the first roller brush 100 or the first connecting portion, so that the first roller brush 100 can rotate relative to the output end of the telescopic motor, and the output end of the telescopic motor is used to apply a force toward the second roller brush 200 to the first roller brush 100. When the storage state is switched to the extended state, the output end of the telescopic motor retracts in a direction away from the second roller brush 200, and the first roller brush 100 will follow the output end and move away from the first roller brush 100 under the action of the elastic member 600. When switching from the extended state to the storage state, the output end of the telescopic motor extends in the direction of the second roller brush 200, realizing state switching, making the movement of the first roller brush 100 easier, and can play a role in simplifying the power mechanism.

[0095] In one embodiment, the roller brush mechanism further includes a matching piece, which is connected to the roller brush shaft 300 and is used to connect to the power mechanism.

[0096] The matching piece may be a structure that can be driven by a power mechanism, thereby driving the first connecting portion and the second connecting portion to extend and retract relative to each other.

[0097] In one embodiment, if Figure 1-2 As shown, the roller brush shaft 300 includes an axis end opening, the roller brush shaft 300 includes an end cover 370, the end cover 370 is connected to the roller brush shaft 300 through the axis end opening, and the matching piece is connected to the end cover 370. The roller brush shaft 300 can be easily processed, the end cover 370 can be processed separately according to the structural characteristics of the matching piece, and different end covers 370 can be replaced to adapt to different matching pieces.

[0098] On the other hand, the utility model further provides an automatic cleaning system, comprising: a base station; and any one of the cleaning devices described above, wherein the cleaning device is configured to be selectively docked at the base station.

[0099] The base station includes a docking space, and the cleaning device can be selectively docked in the docking space for charging, cleaning, replacement of cleaning parts, etc. The automatic cleaning system includes any of the aforementioned cleaning devices, including the advantages of any of the cleaning devices, which will not be repeated here.

[0100] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A roller brush mechanism for a cleaning device, the cleaning device comprising a first power mechanism, characterized in that: The roller brush mechanism comprises: a first roller brush (100) and a second roller brush (200) arranged side by side, wherein the first roller brush (100) and the second roller brush (200) are used to clean the surface to be cleaned; A first end surface (101) is provided at one end of the first roller brush (100) adjacent to the second roller brush (200), and a second end surface (201) is provided at one end of the second roller brush (200) adjacent to the first roller brush (100); the state of the roller brush mechanism includes an extended state and a retracted state, and at least one of the first roller brush (100) and the second roller brush (200) is used to move along the direction of its own rotation axis under the drive of the first power mechanism, so that the roller brush mechanism switches between the extended state and the retracted state; wherein, when in the retracted state, the minimum distance between the first end surface (101) and the second end surface (201) in the direction of the rotation axis is smaller than the minimum distance between the first end surface (101) and the second end surface (201) in the direction of the rotation axis when in the extended state.

2. The roller brush mechanism according to claim 1, characterized in that: When in the storage state, the minimum distance between the first end surface (101) and the second end surface (201) in the direction of the rotation axis is 0.

3. The roller brush mechanism according to claim 1, characterized in that: The roller brush mechanism comprises at least two roller brushes, the at least two roller brushes are coaxially arranged in parallel, and the first roller brush (100) and the second roller brush (200) are adjacent roller brushes among the at least two roller brushes; When in the retracted state, the first end surface (101) and the second end surface (201) are in contact with each other; when in the extended state, the first end surface (101) and the second end surface (201) are separated from each other.

4. The roller brush mechanism according to claim 1, characterized in that: At least one of the first end surface (101) and the second end surface (201) is a sloped surface.

5. The roller brush mechanism according to claim 4, characterized in that: When the roller brush mechanism is in the extended state, the distance between the intersection of the first end surface (101) and the first rotation axis of the first roller brush (100) and the intersection of the second end surface (201) and the second rotation axis of the second roller brush (200) is less than or equal to the projection length of the inclined surface on the rotation axis of the roller brush on which it is located.

6. The roller brush mechanism according to claim 4, characterized in that: The first end face (101) and the second end face (201) are both inclined surfaces. When the roller brush mechanism is in the extended state, the distance between the intersection of the first end face (101) and the first rotation axis of the first roller brush (100) and the intersection of the second end face (201) and the second rotation axis of the second roller brush (200) is less than or equal to the maximum length of the projection length of the first end face (101) on the first rotation axis and the projection length of the second end face (201) on the second rotation axis.

7. The roller brush mechanism according to any one of claims 4 to 6, characterized in that: The surface type of the inclined surface includes a plane, a curved surface, a combination of multiple planes, a combination of multiple curved surfaces, or a combination of a plane and a curved surface.

8. The roller brush mechanism according to claim 7, characterized in that: When the first end surface (101) and the second end surface (201) are both inclined surfaces, the second end surface (201) is adapted to the surface shape of the first end surface (101).

9. The roller brush mechanism according to claim 1, characterized in that: The roller brush mechanism comprises a roller brush shaft (300), the first roller brush (100) and the second roller brush (200) are arranged axially along the roller brush shaft (300), and at least one of the first roller brush (100) and the second roller brush (200) is used to move along the extension direction of the roller brush shaft (300) under the drive of the first power mechanism, so that the roller brush mechanism switches between the extended state and the stored state.

10. The roller brush mechanism according to claim 9, characterized in that: The first roller brush (100) and the second roller brush (200) are limited in the circumferential direction along the roller brush shaft (300), and one of the first roller brush (100) and the second roller brush (200) is used to rotate under the drive of a second power mechanism to drive the other of the first roller brush (100) and the second roller brush (200) to rotate.

11. The roller brush mechanism according to claim 10, characterized in that: At least one of the first roller brush (100) and the second roller brush (200) is used to move along the extension direction of the roller brush shaft (300) under the drive of the first power mechanism, and the other of the first roller brush (100) and the second roller brush (200) is used to rotate under the drive of the second power mechanism.

12. The roller brush mechanism according to any one of claims 9 to 11, characterized in that: The roller brush shaft (300) comprises a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the first roller brush (100), and the second connecting portion is connected to the second roller brush (200), and at least one of the first connecting portion and the second connecting portion is used to move along its own rotation axis under the drive of the first power mechanism to drive the first roller brush (100) and the second roller brush (200) to move closer to or away from each other.

13. The roller brush mechanism according to claim 12, characterized in that: The first connecting portion comprises a guide cylinder (310) and a first bracket (350), the second connecting portion comprises a guide rod (320) and a second bracket (360), the first roller brush (100) is arranged circumferentially along the first bracket (350), and the second roller brush (200) is arranged circumferentially along the second bracket (360); The first end of the guide tube (310) is connected to the first bracket (350), the guide tube (310) comprises a guide tube inner cavity (311) penetrating the second end of the guide tube (310), and the second bracket (360) comprises a roller brush inner cavity (363) penetrating the second end surface; The guide rod (320) is at least partially located in the roller brush inner cavity (363), and the guide rod (320) is connected to the second bracket (360), the guide tube (310) is inserted into the roller brush inner cavity (363), and the guide rod (320) is movably inserted into the guide tube inner cavity (311).

14. The roller brush mechanism according to claim 13, characterized in that: The guide rod (320) is in sliding contact with the inner wall of the guide tube inner cavity (311), and interacts with the inner wall of the guide tube inner cavity (311) in the circumferential direction, so that the guide rod (320) and the guide tube (310) are limited in the circumferential direction.

15. The roller brush mechanism according to claim 13, characterized in that: The roller brush shaft (300) further comprises at least one limiting member (330), wherein the limiting member (330) is connected to the guide rod (320); when in the extended state, the limiting member (330) contacts the limiting surface (312) of the first bracket (350) to achieve axial limiting; when in the retracted state, the limiting member (330) is disengaged from the limiting surface (312) of the first bracket (350); Alternatively, the roller brush shaft (300) further comprises at least one limiting member (330), wherein the limiting member (330) is connected to the guide rod (320), and when in the extended state, the limiting member (330) contacts the limiting surface (312) of the guide tube (310) to achieve axial limiting, and when in the retracted state, the limiting member (330) is disengaged from the limiting surface (312) of the guide tube (310).

16. The roller brush mechanism according to claim 15, characterized in that: The limiting member (330) comprises an extension rod (331) and a limiting cap (332), wherein a first end of the extension rod (331) is connected to the guide rod (320), and the limiting cap (332) is arranged at a second end of the extension rod (331); The guide tube inner cavity (311) comprises a guide area (3111) and a clearance area (3112); the guide area (3111) and the clearance area (3112) are arranged in a direction away from the second bracket (360) and are adjacently arranged; the connecting position of the guide area (3111) and the clearance area (3112) forms the limiting surface (312); and the limiting cap (332) moves at least within the clearance area (3112); When in the extended state, the limiting cap (332) contacts the limiting surface (312) for limiting, and when in the stored state, the limiting member (330) is separated from the limiting surface (312).

17. The roller brush mechanism according to claim 16, characterized in that: The radial cross-sectional area of ​​the limiting cap (332) is larger than that of the guide area (3111).

18. The roller brush mechanism according to claim 13, characterized in that: The roller brush shaft (300) further comprises at least one limiting member (330), wherein the limiting member (330) is connected to the guide rod (320); when in the storage state, the limiting member (330) contacts the limiting surface (312) of the first bracket (350) to achieve axial limiting; when in the extended state, the limiting member (330) is separated from the limiting surface (312) of the first bracket (350); Alternatively, the roller brush shaft (300) further comprises at least one limiting member (330), wherein the limiting member (330) is connected to the guide rod (320), and when in the retracted state, the limiting member (330) contacts the limiting surface (312) of the guide tube (310) to achieve axial limiting, and when in the extended state, the limiting member (330) is disengaged from the limiting surface (312) of the guide tube (310).

19. The roller brush mechanism according to claim 13, characterized in that: The roller brush mechanism further comprises a sealing component (340), wherein the sealing component (340) is located between the outer wall of the guide cylinder (310) and the inner wall of the roller brush inner cavity (363).

20. The roller brush mechanism according to claim 19, characterized in that: The sealing component (340) is fixedly connected to the inner wall of the roller brush inner cavity (363), and the sealing component (340) is in sliding contact with the outer wall of the guide cylinder (310); Alternatively, the sealing component (340) is in sliding contact with the inner wall of the roller brush inner cavity (363), and the sealing component (340) is fixedly connected to the outer wall of the guide tube (310).

21. The roller brush mechanism according to claim 20, characterized in that: When the sealing assembly (340) is fixedly connected to the inner wall of the roller brush inner cavity (363), the second bracket (360) includes a bracket body (361) and a sealing platform (362), the roller brush mechanism further includes a protective member (400), the bracket body (361) includes the roller brush inner cavity (363), and the sealing platform (362) and the protective member (400) are arranged in the roller brush inner cavity (363) at intervals; The guide sleeve (310) slidably contacts the sealing platform (362) and the protective member (400); The sealing assembly (340) is located between the sealing platform (362) and the protection member (400).

22. The roller brush mechanism according to claim 21, characterized in that: The protective member (400) is detachably connected to the second roller brush (200).

23. The roller brush mechanism according to claim 21, characterized in that: The sealing assembly (340) comprises an intermediate sealing body (341) and two sealing rings (342); the intermediate sealing body (341) is located between the sealing platform (362) and the protective member (400); the two sealing rings are respectively located at two ends of the intermediate sealing body (341) and are respectively in contact with the sealing platform (362) and the protective member (400); The two sealing rings (342) are both in sliding contact with the guide sleeve (310).

24. The roller brush mechanism according to claim 12, characterized in that: When the roller brush mechanism is in the extended state, the roller brush mechanism comprises a storage space (10); The outer diameter of the area of ​​the roller brush shaft (300) located between the first end surface (101) and the second end surface (201) is smaller than the outer diameters of the first roller brush (100) and the second roller brush (200), and the first end surface (101), the second end surface (201) and the roller brush shaft (300) enclose at least a portion of the storage space (10); The roller brush mechanism further comprises: at least one cutting member (500), the cutting member (500) being connected to at least one of the first connecting portion and the second connecting portion, the cutting member (500) being used at least to cut obstacles located in the storage space (10) when the roller brush mechanism switches from the extended state to the stored state.

25. The roller brush mechanism according to claim 24, characterized in that: The cutting end of the cutting piece (500) protrudes from the end surface of the second connecting part on the side opposite to the first connecting part, and a first cutting groove (102) axially opposite to the cutting piece (500) is provided on the end surface of the first connecting part on the side opposite to the second connecting part; And / or, the cutting end of the cutting member (500) protrudes from an end surface of the first connecting portion on a side opposite to the second connecting portion, and a first cutting groove (102) axially opposite to the cutting member (500) is provided on an end surface of the second connecting portion on a side opposite to the first connecting portion; The first cutting groove (102) constitutes at least a partial area of ​​the storage space (10), and when the roller brush mechanism is in the storage state, at least the cutting end is embedded in the first cutting groove (102).

26. The roller brush mechanism according to claim 25, characterized in that: The roller brush mechanism further comprises a protective member (400), wherein the protective member (400) is connected to the first connecting portion and / or the second connecting portion, and the cutting member (500) is fixed to the protective member (400). The end of the protective member (400) is higher than the cutting end of the cutting member (500). When in the storage state, the end of the protective member (400) and the cutting end are both embedded in the first cutting groove (102).

27. The roller brush mechanism according to claim 24, characterized in that: The roller brush mechanism further comprises a protective member (400), wherein the protective member (400) is arranged on one of the first connecting portion and the second connecting portion, and the cutting member (500) is arranged on the other of the first connecting portion and the second connecting portion; The protective member (400) is provided with a second cutting groove (401) axially opposite to the cutting member (500), the second cutting groove (401) constituting a partial area of ​​the storage space (10), and in the storage state, the cutting member (500) is partially embedded in the second cutting groove (401).

28. The roller brush mechanism according to claim 27, characterized in that: The first connecting portion is provided with a receiving groove (103), and the cutting member (500) is located in the receiving groove (103); In the storage state, the protection member (400) is partially embedded in the storage groove (103).

29. The roller brush mechanism according to claim 24, characterized in that: The roller brush shaft (300) is provided with a clearance groove (313), the clearance groove (313) extending in the direction of the rotation axis, the cutting end of the cutting member (500) is located in both the storage space (10) and the clearance groove (313), and the cutting member (500) is at least used to move along the clearance groove (313) when the roller brush mechanism switches from the extended state to the storage state, so as to cut obstacles located in the storage space (10).

30. The roller brush mechanism according to claim 12, characterized in that: The roller brush mechanism also includes: an elastic member (600), the elastic member (600) being directly or indirectly connected to at least one of the first connecting portion and the second connecting portion, and the elastic member (600) storing energy when the roller brush mechanism switches from the extended state to the retracted state; When the roller brush mechanism switches from the storage state to the extended state, the elastic member (600) releases stored energy.

31. The roller brush mechanism according to claim 12, characterized in that: The roller brush mechanism also includes: an elastic member (600), the elastic member (600) being directly or indirectly connected to at least one of the first connecting portion and the second connecting portion, and the elastic member (600) storing energy when the roller brush mechanism switches from the storage state to the extended state; When the roller brush mechanism switches from the extended state to the retracted state, the elastic member (600) releases stored energy.

32. A cleaning device, characterized in that: include: A cleaning device body, a power mechanism and a roller brush mechanism as claimed in any one of claims 1 to 30; The power mechanism is connected to the cleaning device body and the roller brush mechanism respectively, and is used to drive at least one of the first roller brush (100) and the second roller brush (200) to move, and to drive the first roller brush (100) and the second roller brush (200) to rotate synchronously around the rotation axis.

33. The cleaning device according to claim 32, characterized in that The roller brush mechanism also includes a matching piece, which is connected to the roller brush shaft (300) of the roller brush mechanism, and is used to connect to the power mechanism.

34. The cleaning device according to claim 32, characterized in that The roller brush shaft (300) comprises an axial end opening, the roller brush shaft (300) comprises an end cover (370), the end cover (370) is connected to the roller brush shaft (300) via the axial end opening, and the roller brush mechanism further comprises a matching piece, the matching piece is connected to the end cover (370).

35. The cleaning device according to claim 32, characterized in that The power mechanism includes a first rotation driving member, a second rotation driving member and a position driving member; The roller brush shaft (300) comprises a first connecting portion and a second connecting portion, the first connecting portion being connected to the first roller brush (100), and the second connecting portion being connected to the second roller brush (200); The first rotating driving member and the second rotating driving member are respectively connected to the first connecting part and the second connecting part, and are used to respectively drive the first connecting part and the second connecting part to drive the first roller brush (100) and the second roller brush (200) to rotate synchronously around the rotating shaft; The position driving member is connected to at least one of the first connecting portion and the second connecting portion to drive at least one of the first roller brush (100) and the second roller brush (200) to move relatively along the direction of the rotation axis.

36. The cleaning device according to claim 32, characterized in that The power mechanism includes a rotation drive member and a position drive member; The roller brush shaft (300) comprises a first connecting portion and a second connecting portion, the first connecting portion is connected to the first roller brush (100), the second connecting portion is connected to the second roller brush (200), and the first connecting portion and the second connecting portion are circumferentially limited; The rotary drive member is connected to one of the first connection part and the second connection part, and the rotary drive member is used to drive one of the first connection part and the second connection part to rotate, thereby driving the other of the first connection part and the second connection part to rotate synchronously; The position driving member is connected to the other one of the first connecting part and the second connecting part to drive the other one of the first connecting part and the second connecting part to move relatively along the direction of the rotation axis.

37. An automatic cleaning system, characterized in that: include: Base station; as well as A cleaning device as described in any one of claims 32-36, wherein the cleaning device is configured to selectively dock at the base station.

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