Cleaning device

Abstract

The present application relates to a cleaning device, comprising: a housing having a cleaning opening; a roller brush mechanism that is arranged in the housing so as to be liftable in correspondence with the cleaning opening; and a drive mechanism that is arranged in the housing and capable of being transmission-connected to the roller brush mechanism, for driving the roller brush mechanism to lift and lower in the housing in directions away from and toward the cleaning opening. When the cleaning device reaches a large puddle of water, in order to prevent the roller brush mechanism from getting wet, the drive mechanism can be used to drive the roller brush mechanism to rise, avoiding the water stain on the ground, and preventing the roller brush mechanism from sucking the water stain into the dust box and wetting the dust box. At the same time, the cleaning device can continue to move in the water stain area and wipe the water stain with a mop, thereby cleaning the water stain area. There is no need to set the water stain area as a walking restricted area, and the cleaning area of the cleaning device will not be restricted. In this way, large puddles of water on the ground can be prevented from wetting the dust box and generating odor, and the cleaning range can also be unrestricted.

Description

Technical Field

[0001] The present application relates to the technical field of automatic cleaning, and particularly to a cleaning device. Background Art

[0002] With the development of the economy and the progress of society, people's requirements for the quality of life are getting higher and higher. Therefore, some intelligent appliances that can liberate human hands have emerged as the times require. Among them, as a kind of intelligent household appliance, the cleaning robot plays an increasingly important role in people's daily life.

[0003] The cleaning robot can automatically walk to perform cleaning work. However, for the situation where there is a large pool of water stains on the ground, one cleaning method is that the cleaning robot first sweeps the water stains into the floating shell and the dust box, and then dries the ground. Another cleaning method is that in order to avoid wetting the dust box, the user is forced to set areas such as the toilet where large pools of water stains are likely to exist as restricted areas. However, in this way, the cleaning robot cannot clean restricted areas such as the toilet, and the cleaning range is limited. Therefore, the traditional cleaning method for large pools of water stains will either wet the dust box or limit the cleaning range. Summary of the Invention

[0004] Based on this, in view of the problem that the traditional cleaning method for large pools of water stains will either wet the dust box or limit the cleaning range, it is necessary to provide a cleaning device.

[0005] A cleaning device, the cleaning device includes:

[0006] A housing having a cleaning opening;

[0007] A rotary brush mechanism is disposed in the housing so as to be liftable corresponding to the cleaning opening;

[0008] A driving mechanism is disposed in the housing and can be in transmission connection with the rotary brush mechanism for driving the rotary brush mechanism to lift in the housing in directions away from and close to the cleaning opening.

[0009] In the above cleaning device, a driving mechanism is provided, which can actively drive the rotary brush mechanism to lift in directions close to and away from the cleaning opening. When the cleaning device walks to a large pool of water stains, in order to avoid the rotary brush mechanism being wetted, the driving mechanism can drive the rotary brush mechanism to rise, avoiding the water stains on the ground, preventing the rotary brush mechanism from sucking the water stains into the dust box and wetting the dust box. At the same time, the cleaning device can continue to walk in the water stain area and dry the water stains with a mop, realizing the cleaning of the water stain area, without setting the water stain area as a walking restricted area, and the cleaning area of the cleaning device will not be limited. In this way, it is possible to prevent the large pool of water stains on the ground from wetting the dust box and generating odors, and also to make the cleaning range unrestricted.

[0010] In one embodiment, the driving mechanism includes a driving member and a transmission assembly. The driving member drives the transmission assembly to swing in directions close to and away from the cleaning port, and drives the roller brush mechanism to move up and down.

[0011] In one embodiment, the transmission assembly has a supporting surface capable of abutting against the roller brush mechanism. When the transmission assembly swings under the drive of the driving member, the supporting surface swings in directions close to and away from the cleaning port.

[0012] In one embodiment, the transmission assembly includes a driving swing arm and a driven swing arm that are both rotatably arranged. The driving swing arm is connected to the driving member, and the driving swing arm and the driven swing arm are in transmission connection. Under the drive of the driving member, the driving swing arm and the driven swing arm swing in directions close to and away from each other, and form the supporting surface that moves up and down relative to the cleaning port.

[0013] In one embodiment, the driving swing arm includes a first transmission end and a first free end that are oppositely arranged. The driven swing arm includes a second transmission end and a second free end that are oppositely arranged. The first transmission end is connected to the driving member. The first transmission end and the second transmission end are both rotatably arranged and meshed for transmission. The first free end and the second free end swing synchronously in directions close to and away from the cleaning port, and the plane where the first free end and the second free end are located is the supporting surface.

[0014] In one embodiment, the transmission ratio between the first transmission end and the second transmission end is 1:1, and the angles between the first free end and the plane where the cleaning port is located, and between the second free end and the plane where the cleaning port is located are the same.

[0015] In one embodiment, the driving mechanism further includes a bracket assembly installed on the housing. The driving member is fixed on the bracket assembly. The first transmission end and the second transmission end are both rotatably arranged on the bracket assembly, and the first free end and the second free end are both exposed relative to the bracket assembly.

[0016] In one embodiment, the bracket assembly includes a mounting member and a fixing member. The mounting member is arranged on the housing. The driving member is fixed on the mounting member. The driving swing arm is sleeved on the output shaft of the driving member. The driven swing arm and the driving swing arm are arranged on the same side of the mounting member and are rotatably arranged on the mounting member. The fixing member covers the outside of the first transmission end and the second transmission end and is engaged with the mounting member.

[0017] In one embodiment, the rotary brush mechanism includes a floating housing having a body and a mating portion protruding from an outer peripheral wall of the body. The mating portion is located on a side of the support surface away from the cleaning opening, and the support surface swings to abut against or separate from the mating portion.

[0018] In one embodiment, when the rotary brush mechanism is lifted and lowered under the drive of the drive mechanism, the axis of the rotary brush mechanism always remains parallel to the plane where the cleaning opening is located.

[0019] In one embodiment, the cleaning device further includes a first link assembly and a second link assembly, which are respectively disposed at opposite ends of the rotary brush mechanism along its own axis;

[0020] Wherein, one end of the first link assembly is hinged to the rotary brush mechanism, and the other end is hinged to the housing, and a parallelogram link mechanism is formed; one end of the second link assembly is hinged to the rotary brush mechanism, and the other end is hinged to the housing, and another parallelogram link mechanism is formed.

[0021] In one embodiment, the first link assembly includes two first links arranged in parallel at intervals. One end of each first link is hinged to the rotary brush mechanism, and the other end is hinged to the housing;

[0022] The second link assembly includes two second links arranged in parallel at intervals. One end of each second link is hinged to the rotary brush mechanism, and the other end is hinged to the housing.

[0023] In one embodiment, the drive mechanism has a transmission state and an avoidance state. In the transmission state, the drive mechanism is in transmission connection with the rotary brush mechanism and drives the rotary brush mechanism to lift and lower; in the avoidance state, the drive mechanism is separated from the rotary brush mechanism. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of a cleaning device in an embodiment of the present application;

[0025] Figure 2 is Figure 1 an exploded schematic diagram of the cleaning device shown;

[0026] Figure 3 is Figure 1 a schematic structural diagram of the drive mechanism in the cleaning device shown;

[0027] Figure 4 is Figure 3 an exploded schematic diagram of the drive mechanism shown.

[0028] Explanation of the accompanying drawings: 100, cleaning device; 30, roller brush mechanism; 32, floating shell; 321, main body; 323, mating part; 50, driving mechanism; 52, driving member; 54, transmission assembly; 541, supporting surface; 542, active swing arm; 543, first transmission end; 545, first free end; 546, driven swing arm; 547, second transmission end; 548, second free end; 70, bracket assembly; 72, mounting member; 74, fixing member; 82, first connecting rod assembly; 821, first connecting rod; 84, second connecting rod assembly; 841, second connecting rod. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0035] Referring to Figure 1 , in an embodiment of the present application, a cleaning device 100 is provided, which includes a housing (not shown in the figure), a roller brush mechanism 30 and a driving mechanism 50. The housing has a cleaning opening. The roller brush mechanism 30 is disposed in the housing so as to be liftable corresponding to the cleaning opening, and the roller brush mechanism 30 lowered to the cleaning opening can be used for floor cleaning. And, the driving mechanism 50 is disposed in the housing and can be in transmission connection with the roller brush mechanism 30 to drive the roller brush mechanism 30 to lift and swing in the housing in directions away from and close to the cleaning opening. Wherein, the cleaning opening is an opening for exposing the roller brush mechanism 30, and the cleaning device 100 allows the garbage on the ground to be cleaned by the roller brush mechanism 30 through the cleaning opening.

[0036] In this way, by arranging the driving mechanism 50 in the cleaning device 100, the roller brush mechanism 30 can be actively driven to move up and down in the directions close to and away from the cleaning port. When the cleaning device 100 moves to a large pool of water stains, in order to prevent the roller brush mechanism 30 from being wetted, the driving mechanism 50 can drive the roller brush mechanism 30 to rise, avoiding the water stains on the ground, preventing the roller brush mechanism 30 from sucking the water stains into the dust box and wetting the dust box. At the same time, the cleaning device 100 can continue to move in the water stain area to dry the water stains with the mop, realizing the cleaning of the water stain area, without setting the water stain area as a no-go area for walking, and the cleaning area of the cleaning device 100 will not be limited. In this way, it can prevent the large pool of water stains on the ground from wetting the dust box and generating peculiar smell, and also make the cleaning range not limited.

[0037] In addition, the roller brush mechanism 30 is arranged in the housing in a liftable manner. When the cleaning device 100 encounters an obstacle during walking, the roller brush mechanism 30 can adaptively rise under the action of the obstacle, making the walking of the cleaning device 100 smoother.

[0038] Refer to Figures 2 - 4 , in some embodiments, the driving mechanism 50 has a transmission state and an avoidance state. In the transmission state, the driving mechanism 50 is in transmission connection with the roller brush mechanism 30 and drives the roller brush mechanism 30 to move up and down; for example, when encountering a large pool of water stains, the driving mechanism 50 is switched to the transmission state to drive the roller brush mechanism 30 to move up and down, preventing the roller brush mechanism 30 from contacting the water stains, and further preventing the dust box from being wetted. In the avoidance state, the driving mechanism 50 is separated from the roller brush mechanism 30; for example, after the cleaning mechanism crosses a large pool of water stains, the driving mechanism 50 is switched to the avoidance state, separating the driving mechanism 50 from the roller brush mechanism 30. In this way, when the roller brush mechanism 30 adaptively moves up and down when encountering an obstacle, it will not collide with the driving mechanism 50, and further prevent noise generation.

[0039] In some embodiments, the driving mechanism 50 includes a driving member 52 and a transmission assembly 54. The driving member 52 drives the transmission assembly 54 to swing in the directions close to and away from the cleaning port, and drives the roller brush mechanism 30 to move up and down. In this way, when the driving member 52 works, it drives the transmission assembly 54 to swing in the directions close to and away from the cleaning port, and then drives the roller brush mechanism 30 to approach and move away from the cleaning port through the swinging transmission assembly 54 to control the lifting of the roller brush mechanism 30.

[0040] Further, the transmission assembly 54 has a support surface 541 that can abut against the roller brush mechanism 30. When the transmission assembly 54 swings under the drive of the driving member 52, the support surface 541 moves in the directions close to and away from the cleaning port and remains parallel to the plane where the cleaning port is located. When the cleaning device 100 works, the cleaning port on the housing faces the ground and remains in a horizontal direction parallel to the ground to allow the garbage on the ground to be cleaned by the roller brush at the cleaning port, where the plane where the cleaning port is located is the horizontal plane when the cleaning device 100 is placed on the ground.

[0041] In this way, through the cooperation of the support surface 541 of the transmission assembly 54 and the roller brush mechanism 30, the roller brush mechanism 30 is driven to lift, and during the driving process, the support surface 541 of the transmission assembly 54 always remains parallel to the plane where the cleaning port is located. Furthermore, the roller brush mechanism 30 supported by the transmission assembly 54 is kept horizontal. In this way, the roller brush mechanism 30 will not tilt during the lifting process, preventing the roller brush mechanism 30 from contacting the water stains on the ground due to tilting.

[0042] Furthermore, the transmission assembly 54 includes a driving swing arm 542 and a driven swing arm 546. The driving swing arm 542 is connected to the driving member 52, and the driving swing arm 542 and the driven swing arm 546 are in transmission connection. Driven by the driving member 52, the driving swing arm 542 and the driven swing arm 546 swing in the directions of approaching and separating from each other, and a support surface 541 for lifting relative to the cleaning port is formed. That is to say, under the action of the driving member 52, when the driving swing arm 542 and the driven swing arm 546 swing in the direction of approaching each other, the support surface 541 moves away from the cleaning port, thereby pushing the roller brush mechanism 30 to rise; when the driving swing arm 542 and the driven swing arm 546 swing in the direction of separating from each other, the support surface 541 moves closer to the cleaning port, thereby causing the roller brush mechanism 30 to descend.

[0043] Specifically, the driving swing arm 542 includes a first transmission end 543 and a first free end 545 arranged oppositely, and the driven swing arm 546 includes a second transmission end 547 and a second free end 548 arranged oppositely. The first transmission end 543 is connected to the driving member 52. The first transmission end 543 and the second transmission end 547 are rotatably arranged and meshed with each other for transmission. The first free end 545 and the second free end 548 swing synchronously in the directions of approaching and separating from the cleaning port, that is, the driving swing arm 542 and the driven swing arm 546 swing in the directions of approaching and separating from each other.

[0044] Moreover, the plane where the first free end 545 and the second free end 548 are located is the support surface 541. In this way, when the first free end 545 and the second free end 548 swing synchronously in the direction of separating from the cleaning port, the driving swing arm 542 and the driven swing arm 546 approach each other, and the support surface 541 formed by the plane where the first free end 545 and the second free end 548 are located gradually moves away from the cleaning port, thereby pushing the roller brush mechanism 30 to rise through the first free end 545 and the second free end 548. When the first free end 545 and the second free end 548 swing synchronously in the direction of approaching the cleaning port, the driving swing arm 542 and the driven swing arm 546 separate from each other, and the support surface 541 formed by the plane where the first free end 545 and the second free end 548 are located gradually moves closer to the cleaning port, allowing the roller brush mechanism 30 supported by the first free end 545 and the second free end 548 to descend.

[0045] Optionally, the transmission ratio between the first transmission end 543 and the second transmission end 547 is 1:1, that is, gears meshing with each other are provided on the first transmission end 543 and the second transmission end 547, and the circular tops of the gears on both are the same, thereby ensuring that the transmission ratio between the first transmission end 543 and the second transmission end 547 is 1:1, making the swinging angles of the active swing arm 542 and the driven swing arm 546 the same, so that the first free end 545 and the second free end 548 are always at the same height, keeping the support surface 541 horizontal.

[0046] In some embodiments, the driving mechanism 50 further includes a bracket assembly 70 mounted on the housing. The driving member 52 is fixed to the bracket assembly 70. The first transmission end 543 and the second transmission end 547 are rotatably arranged on the bracket assembly 70. The first free end 545 and the second free end 548 are both exposed relative to the bracket assembly 70. Thus, the driving member 52 and the transmission assembly 54 are mounted by the bracket assembly 70, and the first free end 545 and the second free end 548 of the transmission assembly 54 are relatively exposed, so as to be able to abut against the roller brush mechanism 30 to drive the roller brush mechanism 30 to lift.

[0047] Further, the bracket assembly 70 includes a mounting member 72 and a fixing member 74. The mounting member 72 is assembled on the housing. The driving member 52 is fixed to the mounting member 72. The active swing arm 542 is sleeved on the output shaft of the driving member 52. The driven swing arm 546 and the active swing arm 542 are arranged on the same side of the mounting member 72 and are rotatably arranged on the mounting member 72. The fixing member 74 covers the outside of the first transmission end 543 and the second transmission end 547 and is engaged with the mounting member 72, so as to mount the driving member 52 and the transmission assembly 54 on the bracket assembly 70. And, the first transmission end 543 is rotatably mounted on the fixing member 74, further ensuring the smooth rotation of the first transmission end 543.

[0048] In some embodiments, the roller brush mechanism 30 includes a floating housing 32. The floating housing 32 has a body 321 and a mating portion 323 protruding from the outer peripheral wall of the body 321. The mating portion 323 is located on the side of the support surface 541 away from the cleaning port, that is, on the side of the first free end 545 and the second free end 548 away from the cleaning port, and the support surface 541 swings to abut against or separate from the mating portion 323. Thus, during the swinging process of the support surface 541 formed by the first free end 545 and the second free end 548, it can contact the mating portion 323, thereby driving the floating housing 32 and the entire roller brush mechanism 30 to lift.

[0049] In addition, at the initial stage when the first free end 545 and the second free end 548 swing towards the cleaning port, the driving mechanism 50 is in a transmission state, allowing the roller brush mechanism 30 to synchronously descend until the roller brush mechanism 30 descends to the limit position and is blocked by a limit to remain stationary. Then, the first free end 545 and the second free end 548 can continue to swing towards the cleaning port, causing the driving mechanism 50 to switch to an avoidance state. At this time, the first free end 545 and the second free end 548 are separated from the stationary roller brush mechanism 30, thereby preventing the roller brush mechanism 30 from colliding with the first free end 545 or the second free end 548 when floating under the action of an external obstacle and preventing the generation of collision noise.

[0050] In some embodiments, when the roller brush mechanism 30 is lifted and lowered under the drive of the driving mechanism 50, the axis of the roller brush mechanism 30 always remains parallel to the plane where the cleaning port is located, that is, the axis of the roller brush inside the roller brush mechanism 30 always remains horizontal, preventing the roller brush mechanism 30 from being wetted by the water stains on the ground due to inclination.

[0051] Furthermore, the cleaning device 100 further includes a first link assembly 82 and a second link assembly 84, which are respectively arranged at opposite ends of the roller brush mechanism 30 along its own axis; wherein, one end of the first link assembly 82 is hinged to the roller brush mechanism 30, and the other end is hinged to the housing, and they form a parallelogram link mechanism; one end of the second link assembly 84 is hinged to the roller brush mechanism 30, and the other end is hinged to the housing, and they form another parallelogram link mechanism. In this way, the roller brush mechanism 30 is hinged to the housing through two parallelogram link mechanisms located on both sides of its own axis. The roller brush mechanism 30 as a whole is equivalent to a side of the parallelogram link mechanism and can remain horizontal when subjected to an upward thrust, which can further prevent the roller brush mechanism 30 from tilting during the lifting and lowering process and coming into contact with the water stains on the ground.

[0052] Specifically, the first link assembly 82 includes two first links 821 arranged in parallel at intervals. One end of each first link 821 is hinged to the roller brush mechanism 30, and the other end is hinged to the housing. In this way, a parallelogram link mechanism is formed by the two first links 821, the housing, and the roller brush mechanism 30. The second link assembly 84 includes two second links 841 arranged in parallel at intervals. One end of each second link 841 is hinged to the roller brush mechanism 30, and the other end is hinged to the housing. In this way, another parallelogram link mechanism is formed by the two second links 841, the housing, and the roller brush mechanism 30. In this way, the roller brush mechanism 30 is connected to the housing through two parallelogram link mechanisms, and the roller brush mechanism 30 can always remain horizontal during the lifting and lowering process. Optionally, the first link 821 and the second link 841 have the same size, so that the two parallelogram link mechanisms on both sides have the same size, ensuring that the roller brush mechanism 30 is in a horizontal position.

[0053] A driving mechanism 50 is provided in the above-mentioned cleaning device 100, which can actively drive the roller brush mechanism 30 to lift in the directions of approaching and departing from the cleaning port. When the cleaning device 100 walks to a large puddle of water stains, in order to prevent the roller brush mechanism 30 from being wetted, the driving mechanism 50 can drive the roller brush mechanism 30 to rise, avoiding the water stains on the ground, preventing the roller brush mechanism 30 from sucking the water stains into the dust box and wetting the dust box. At the same time, the cleaning device 100 can continue to walk in the water stain area to dry the water stains with the mop, realizing the cleaning of the water stain area, without setting the water stain area as a walking restricted area, and the cleaning area of the cleaning device 100 will not be limited. In this way, it can prevent the large puddle of water stains on the ground from wetting the dust box and generating peculiar smell, and can also make the cleaning range unrestricted.

[0054] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0055] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A cleaning device, characterized in that, The cleaning device includes: a housing having a cleaning opening; a rotary brush mechanism (30) which is disposed in the housing and can be lifted and lowered corresponding to the cleaning opening; a driving mechanism (50) which is disposed in the housing and can be in transmission connection with the rotary brush mechanism (30) for driving the rotary brush mechanism (30) to lift and lower in the housing in directions away from and towards the cleaning opening; the driving mechanism (50) includes a driving member (52) and a transmission assembly (54), the driving member (52) drives the transmission assembly (54) to swing in directions towards and away from the cleaning opening and drives the rotary brush mechanism (30) to lift and lower. The transmission assembly (54) has a supporting surface (541) capable of abutting against the rotary brush mechanism (30). When the transmission assembly (54) swings under the drive of the driving member (52), the supporting surface (541) swings in directions towards and away from the cleaning opening; the transmission assembly (54) includes a driving swing arm (542) and a driven swing arm (546) which are both rotatably disposed. The driving swing arm (542) is connected to the driving member (52), and the driving swing arm (542) and the driven swing arm (546) are in transmission connection. Under the drive of the driving member (52), the driving swing arm (542) and the driven swing arm (546) swing in directions towards and away from each other and form the supporting surface (541) which lifts and lowers corresponding to the cleaning opening; the driving swing arm (542) includes a first transmission end (543) and a first free end (545) which are oppositely arranged, the driven swing arm (546) includes a second transmission end (547) and a second free end (548) which are oppositely arranged. The first transmission end (543) is connected to the driving member (52), the first transmission end (543) and the second transmission end (547) are both rotatably disposed and meshed with each other for transmission. The first free end (545) and the second free end (548) swing synchronously in directions towards and away from the cleaning opening, and the plane where the first free end (545) and the second free end (548) are located is the supporting surface (541); 2. The cleaning device according to claim 1, characterized in that, the transmission ratio between the first transmission end (543) and the second transmission end (547) is 1:1, and the angles between the first free end (545) and the plane where the cleaning opening is located and between the second free end (548) and the plane where the cleaning opening is located are the same; 3. The cleaning device according to claim 1, characterized in that, the driving mechanism (50) further includes a bracket assembly (70) mounted on the housing. The driving member (52) is fixed on the bracket assembly (70), the first transmission end (543) and the second transmission end (547) are both rotatably disposed on the bracket assembly (70), and the first free end (545) and the second free end (548) are both exposed relative to the bracket assembly (70).

4. The cleaning device according to claim 3, wherein, The bracket assembly (70) includes a mounting member (72) and a fixing member (74). The mounting member (72) is disposed on the housing. The driving member (52) is fixed to the mounting member (72). The driving swing arm (542) is sleeved on the output shaft of the driving member (52). The driven swing arm (546) and the driving swing arm (542) are disposed on the same side of the mounting member (72) and are rotatably arranged on the mounting member (72). The fixing member (74) covers outside the first transmission end (543) and the second transmission end (547) and is engaged with the mounting member (72).

5. The cleaning device according to claim 1, wherein The roller brush mechanism (30) includes a floating housing (32). The floating housing (32) has a body (321) and a mating portion (323) protruding from the outer peripheral wall of the body (321). The mating portion (323) is located on the side of the support surface (541) away from the cleaning port, and the support surface (541) swings to abut against or separate from the mating portion (323).

6. The cleaning device according to claim 1, characterized in that, When the roller brush mechanism (30) is lifted and lowered under the drive of the drive mechanism (50), the axis of the roller brush mechanism (30) always remains parallel to the plane where the cleaning port is located.

7. The cleaning device according to claim 6, wherein The cleaning device further includes a first link assembly (82) and a second link assembly (84). The first link assembly (82) and the second link assembly (84) are respectively disposed at opposite ends of the roller brush mechanism (30) along its own axis; Wherein, one end of the first link assembly (82) is hinged to the roller brush mechanism (30), and the other end is hinged to the housing, and forms a parallelogram link mechanism; one end of the second link assembly (84) is hinged to the roller brush mechanism (30), and the other end is hinged to the housing, and forms another parallelogram link mechanism.

8. The cleaning device according to claim 7, characterized in that, The first link assembly (82) includes two first links (821) arranged in parallel at intervals. One end of each first link (821) is hinged to the roller brush mechanism (30), and the other end is hinged to the housing; The second link assembly (84) includes two second links (841) arranged in parallel at intervals. One end of each second link (841) is hinged to the roller brush mechanism (30), and the other end is hinged to the housing.

9. The cleaning device according to any one of claims 1-8, characterized in that, The drive mechanism (50) has a transmission state and an avoidance state. In the transmission state, the drive mechanism (50) is in transmission connection with the roller brush mechanism (30) and drives the roller brush mechanism (30) to lift and lower; in the avoidance state, the drive mechanism (50) is separated from the roller brush mechanism (30).

Images