A floor brush structure for a cleaning machine and a cleaning machine

Abstract

The application relates to a floor brush structure for a cleaning machine and the cleaning machine. The floor brush structure for the cleaning machine comprises a shell, a first rolling brush, a second rolling brush and a wind guide channel. The wind guide channel is arranged in the shell and located between the first rolling brush and the second rolling brush and extends along the left-right direction. The bottom of the wind guide channel is provided with a dirt suction opening extending along the length direction of the wind guide channel. The wind guide channel is provided with an air outlet channel. When the first rolling brush and the second rolling brush are in the rotating state, the part of the first brush located in the first opening and the part of the second brush located in the second opening are in the rotating state towards the dirt suction opening. The cleaning capacity is improved, the residual water amount on the ground after cleaning is reduced, the cleaning effect is better, and the demand of the user can be better met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household cleaning, and particularly relates to a floor brush structure for a cleaning machine and the cleaning machine. BACKGROUND

[0002] At present, the cleaning machine is a floor cleaning machine, a dust collector or a sweeper, and the cleaning machine sucks the mixture of dust mixed with water vapor on the ground into the storage cavity thereof.

[0003] The existing cleaning machine, such as a Chinese utility model patent “Rolling brush rod, cleaning mechanism and sweeper”, with the patent number ZL202123250101.9 (authorized publication number CN216932986U), discloses a rolling brush rod, which comprises a first rolling brush sub-rod and a second rolling brush sub-rod. There is a gap between the first rolling brush sub-rod and the second rolling brush sub-rod. Both the first rolling brush sub-rod and the second rolling brush sub-rod adopt a spiral structure. When the rolling brush rod rotates, the garbage attached to the rolling brush rod can be transferred from both sides to the middle gap. The above-mentioned patent adopts the form of a rolling brush. It is difficult for the rolling brush to pick up wet hair. Although a scraping strip is arranged at the rear side of the rolling brush, the hair, sand and other objects often adhere to the scraping strip, thereby causing poor scraping effect of the scraping strip.

[0004] Therefore, it is necessary to further improve the existing floor brush structure for the cleaning machine. SUMMARY

[0005] The first technical problem to be solved by the present application is to provide a floor brush structure for a cleaning machine with improved cleaning ability in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the present application is to provide a floor brush structure capable of reliably cleaning large-size garbage.

[0007] The third technical problem to be solved by the present application is to provide a cleaning machine capable of accurately detecting large-size garbage to achieve the purpose of accurate cleaning.

[0008] The fourth technical problem to be solved by the present application is to provide a cleaning machine with the above-mentioned cleaning structure.

[0009] The technical solution adopted by the present application to solve the first technical problem is a floor brush structure for a cleaning machine, with the direction of travel of the cleaning machine being forward, comprising:

[0010] a housing having a first cavity extending in the left-right direction inside the housing, the bottom of the first cavity having a first opening extending along the length direction thereof;

[0011] The first roller brush comprises a first roller shaft extending along the left-right direction and rotatably arranged in the first chamber, and a first brush arranged on the outer wall of the first roller shaft, wherein the first brush is partially located below the first opening.

[0012] The interior of the housing has a second chamber extending along the length direction of the first chamber behind the first chamber, and the bottom of the second chamber has a second opening extending along the length direction of the second chamber.

[0013] The second roller brush comprises a second roller shaft extending along the left-right direction and rotatably arranged in the second chamber, and a second brush arranged on the outer wall of the second roller shaft, wherein the rotation direction of the second roller shaft is opposite to that of the first roller shaft, and the second brush is partially located below the second opening.

[0014] The air guide channel is arranged in the housing and extends along the left-right direction between the first roller brush and the second roller brush, and the bottom of the air guide channel has a suction port extending along the length direction of the air guide channel, and the air guide channel has an air outlet channel, wherein when the first roller brush and the second roller brush are both in the rotating state, the part of the first brush located in the first opening and the part of the second brush located in the second opening are both in the rotating state towards the suction port.

[0015] In order to quickly discharge the garbage through the air guide channel after the first roller brush and the second roller brush sweep the garbage on the ground into the suction port, the cross section of the air guide channel gradually decreases from bottom to top. In this way, the flow speed of the fluid is accelerated.

[0016] In order to better guide the garbage into the air outlet channel, the front wall plate of the air guide channel gradually inclines forward from top to bottom, and the rear wall plate of the air guide channel gradually inclines backward from top to bottom. In this way, the fluid entering the air guide channel is guided, so that it is more smoothly discharged from the air outlet channel.

[0017] Preferably, the cross sections of the first chamber and the second chamber are both arc-shaped, the front wall plate of the air guide channel is part of the wall plate of the first chamber, and the rear wall plate of the air guide channel is the first part of the wall plate of the second chamber.

[0018] Preferably, the cleaning machine further comprises a scraping strip located at the trailing edge of the second opening, wherein the scraping strip extends along the left-right direction, the left end of the scraping strip is located on the left side of the left edge of the second opening, and the right end of the scraping strip is located on the right side of the right edge of the second opening. In this way, when the cleaning machine turns, the turning radius of the scraping strip covers the residual water on the back side of the roller brush, which is then sucked along the air guide channel, and the residual water on the cleaned ground is less, thereby improving the cleaning ability.

[0019] The air outlet channel can be located on the rear wall plate or the front wall plate of the air guide channel, and can also be located on the top of the air guide channel, but preferably, the air outlet channel is located on the top of the air guide channel.

[0020] In order to scrape the scraping strip, the outer edge of the second brush part is in contact with the front surface of the scraping strip. In this way, the scraping strip is ensured to be in a clean state in real time, and water stains left on the cleaned ground are avoided.

[0021] Preferably, the air guide channel is provided with an air passing section located above the air outlet channel and communicating with the air outlet channel, the air passing section is located between the first and second rolling brushes and is vertically arranged along the fluid flow path, and the air passing section is located downstream of the air outlet channel.

[0022] The amount of residual water after cleaning the ground is further reduced, and the outer diameter of the first rolling brush is greater than that of the second rolling brush.

[0023] In order to gather and collect the hair from the left and right ends to the middle, the first brush part comprises a first brush strip and a second brush strip which are sequentially arranged along the axial direction of the first roller shaft and are both spirally arranged, the rotation directions of the first brush strip and the second brush strip are opposite, and a gap is left between the first brush strip and the second brush strip, and the gap is oppositely arranged with the air outlet channel.

[0024] The first brush strip and the second brush strip can be directly formed on the outer peripheral wall of the roller shaft, or can be arranged on the roller shaft through a rolling brush sleeve, but preferably, the first brush part further comprises a first rolling brush sleeve and a second rolling brush sleeve which are sequentially arranged along the axial direction of the first roller shaft and are sleeved on the periphery of the first roller shaft, the first rolling brush sleeve and the second rolling brush sleeve both extend along the length direction of the first roller shaft, and a gap is left between the first rolling brush sleeve and the second rolling brush sleeve, the gap is the gap, the first brush strip is arranged on the outer peripheral wall of the first rolling brush sleeve, and the second brush strip is arranged on the outer peripheral wall of the second rolling brush sleeve.

[0025] The second brush part is V-shaped, and can guide the garbage at the left and right ends to the corner, the second brush part is a V-shaped brush strip which extends along the axial direction of the second roller shaft and is V-shaped, and the corner of the V-shaped brush strip is oppositely arranged with the air outlet channel. In this way, the garbage at the corner is directly discharged through the air outlet channel.

[0026] In order to improve the flow speed of the garbage, the left and right side walls of the air outlet channel are guide walls which gradually tilt towards each other from bottom to top.

[0027] The technical solution adopted by the application to solve the second technical problem is that the front wall plate of the air guide channel is provided with a gap at a position corresponding to the air outlet channel, and a movable plate arranged to move backward or forward relative to the front wall plate to correspondingly open or close the gap is installed at the gap.

[0028] One way to achieve the movement of the movable plate is that the movable plate is a deformable elastic plate. Thus, when large pieces of debris (such as particles or clumps of hair) accumulate, the elastic plate is squeezed, deforming and opening the notch. The large pieces of debris enter the suction port through the notch. After the large pieces of debris have passed through, the elastic plate automatically returns to its initial position and closes the notch.

[0029] Preferably, the movable plate is rotatably mounted on the front wall of the air guide channel, and the axis of rotation extends in the left-right direction.

[0030] The second way to achieve the movement of the movable plate is to include a drive mechanism for driving the movable plate to rotate back and forth, wherein the power output end of the drive mechanism is connected to the movable plate drive.

[0031] Preferably, the driving mechanism includes a motor and a transmission assembly, wherein the power output end of the motor is drivenly connected to the power input end of the transmission assembly, and the power output end of the transmission assembly is drivenly connected to the movable plate.

[0032] There are various structural forms of the transmission assembly, including driving gears, driven gears, lifting rods, and connecting rods. The driving gear is mounted on the output shaft of the motor, and the driven gear is mounted on the lifting rod and meshes with the driving gear. However, preferably, the transmission assembly includes a rocker arm, a lifting rod, and a connecting rod. The motor and the rocker arm are both located above the first chamber of the housing, and the motor has an output shaft extending in the left-right direction. The lifting rod is located behind the output shaft and is arranged vertically. The first end of the rocker arm is mounted on the output shaft, and the rocker arm has a guide groove extending along its length. The upper end of the lifting rod has a guide member that guides and cooperates with the guide groove, and the lower end of the lifting rod is located in the air guide channel. The front end of the connecting rod is connected to the rear wall of the movable plate, and the rear end of the connecting rod is rotatably connected to the lower end of the lifting rod.

[0033] To guide the up-and-down movement of the lifting rod, the housing has a vertically extending vertical channel, the lifting rod passes through the vertical channel, and the upper end of the lifting rod is located above the vertical channel.

[0034] The technical scheme adopted by the present application to solve the third technical problem is: a cleaning machine, comprising a machine body and a floor brush structure, the machine body having a mounting space for mounting the floor brush structure therein, the bottom of the mounting space having a clearance, the clearance being located at the periphery of the bottom of the shell, characterized in that the floor brush structure is the floor brush structure according to any one of claims 1 to 8, a sensor for sensing the size of garbage is arranged on the front wall surface of the machine body, the signal input end of the sensor is electrically connected with a controller, and the signal output end of the controller is electrically connected with the motor, and the controller is configured to control the motor to drive the operation of the movable plate after receiving the signal collected by the sensor.

[0035] The technical scheme adopted by the present application to solve the fourth technical problem is: a cleaning machine, comprising a floor brush structure, a fan and a separation structure for separating at least dust and air, characterized in that: the floor brush structure is the floor brush structure according to any one of claims 1 to 8, the floor brush structure, the separation structure and the fan are arranged in sequence along a fluid flow path, and the air inlet of the separation structure is in communication with the air guide channel.

[0036] The cleaning machine can be a sweeper or a scrubber, but preferably, the cleaning machine is a sweeper.

[0037] Compared with the prior art, the present application has the advantages that: in the floor brush structure, an elongated air guide channel is arranged between the first roller brush and the second roller brush, the suction force is improved, and during the travel of the cleaning machine, the first roller brush and the second roller brush both sweep the garbage at the corresponding positions to the suction port of the air guide channel, that is, the first roller brush sweeps and peels off the long hair, particles (such as sand) and dust etc. on the ground backward and is sucked into the suction port located at the rear side, and the second roller brush sweeps and peels off the ground cleaned by the first roller brush forward, that is, sweeps the water stains, small particles and long hair etc. remaining on the ground cleaned by the first roller brush forward into the suction port, the second roller brush is rotated in real time to scrape the ground, the cleaning ability is improved, the amount of water remaining on the ground after cleaning is reduced, the cleaning effect is better, and the needs of users can be better met. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 FIG. 1 is a schematic view of part of the structure of the sweeper of embodiment 1 of the present application;

[0039] Figure 2 FIG. 2 is another schematic view of the structure of the sweeper of embodiment 1 of the present application; Figure 1

[0040] Figure 3 FIG. 3 is a schematic view of the structure of the floor brush structure in embodiment 1 of the present application; Figure 1

[0041] Figure 4 Figure 3 ​​​A sectional view;

[0042] Figure 5 for Figure 3 A cross-sectional view from another angle;

[0043] Figure 6 This is a schematic diagram of the structure in the closed state of embodiment 2;

[0044] Figure 7 for Figure 6 A sectional view;

[0045] Figure 8 This is a schematic diagram of the structure in the open state of embodiment 2;

[0046] Figure 9 for Figure 8 A sectional view. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0048] Example 1:

[0049] like Figures 1 to 5 The image shown is a first preferred embodiment of the present invention.

[0050] like Figure 1 and Figure 2 As shown, the cleaning machine in this embodiment is a sweeper. The direction of travel of the sweeper is taken as forward. The sweeper includes a body 8, a floor brush structure, a fan, and a separation structure for separating dust and air. The body 8 has an installation space for the floor brush structure, and the bottom of the installation space has a clearance opening 811 located on the outer periphery of the bottom edge of the housing 1. The fan and separation structure are both mounted on the body 8, and the floor brush structure, separation structure, and fan are arranged sequentially along the fluid flow path. The separation structure uses a structure from the prior art, which will not be described in detail in this embodiment.

[0051] like Figures 3 to 5 As shown, the floor brush structure of this embodiment includes a housing 1, a first roller brush 2, a second roller brush 3, an air guide channel 4, and a scraper 5. The housing 1 has a first chamber 10 extending in a left-right direction and a second chamber 11 located behind the first chamber 10. The bottom of the first chamber 10 has a first opening 101 extending in its length direction.

[0052] The air guide channel 4 is arranged in the housing 1 and located between the first and second rolling brushes 2 and 3 and extends along the left-right direction. The bottom of the air guide channel 4 has a suction port 40 extending along the length direction thereof, and the top of the air guide channel 4 has an air outlet channel 43. The air inlet of the separation structure is in fluid communication with the air outlet channel 43 of the air guide channel 4. In the embodiment, the cross section of the air guide channel 4 gradually decreases from bottom to top, and the front wall plate 41 of the air guide channel 4 gradually inclines forward from top to bottom, and the rear wall plate 42 of the air guide channel 4 gradually inclines backward from top to bottom. In addition, the air guide channel 4 is provided with an air passing section 44 located above the air outlet channel 43 and in communication with the air outlet channel 43. The air passing section 44 is located between the first and second rolling brushes 2 and 3 and vertically arranged along the fluid flow path, downstream of the air outlet channel 43. In the embodiment, the cross sections of the first and second chambers 10 and 11 are both circular arcs. The front wall plate 41 of the air guide channel 4 is part of the wall plate of the first chamber 10, and the rear wall plate 42 of the air guide channel 4 is the first part of the wall plate of the second chamber 11. Furthermore, in order to make the fluid flow out more smoothly, the left and right side walls of the air outlet channel 43 are guide walls 431 that gradually incline towards each other from bottom to top.

[0053] The first rolling brush 2 includes a first roller shaft 21 extending along the left-right direction and rotatably arranged in the first chamber 10, and a first brush member 2a arranged on the outer peripheral wall of the first roller shaft 21 and partially located below the first opening 101. In the embodiment, the first brush member 2a includes a first brush strip 221 and a second brush strip 231 arranged in sequence along the axial direction of the first roller shaft 21 and both arranged in a spiral shape. The rotational directions of the first and second brush strips 221 and 231 are opposite, and a gap 24 is left between them, which is arranged opposite to the air outlet channel 43. Specifically, the first brush member 2a further includes a first rolling brush sleeve 22 and a second rolling brush sleeve 23 sleeved on the outer periphery of the first roller shaft 21 and arranged in sequence along the axial direction of the first roller shaft 21. The first and second rolling brush sleeves 22 and 23 both extend along the length direction of the first roller shaft 21 and a gap is left between them, which is the gap 24 mentioned above. The first brush strip 221 is arranged on the outer peripheral wall of the first rolling brush sleeve 22, and the second brush strip 231 is arranged on the outer peripheral wall of the second rolling brush sleeve 23. In order to cut the hair collected in the gap, a cutting part is usually arranged in the chamber and located in the gap, so as to cut the hair in the gap.

[0054] The second chamber 11 extends along the length direction of the first chamber 10, and the bottom of the second chamber 11 has a second opening 111 extending along the length direction. The outer diameter of the second roller brush 3 is smaller than that of the first roller brush 2. In the embodiment, the second roller brush 3 comprises a second roller shaft 31 extending along the left-right direction and rotatably arranged in the second chamber 11, and a second brush piece arranged on the outer circumferential wall of the second roller shaft 31, the second roller shaft 31 rotates in the opposite direction of the first roller shaft 21, and the second brush piece is partially located below the second opening 111. In the embodiment, the second brush piece is a V-shaped brush strip 32 extending along the axial direction of the second roller shaft 31 and having a V shape, and the corner 321 of the V-shaped brush strip 32 is arranged opposite to the air outlet passage 43. In the embodiment, the V-shaped brush strip 32 has a plurality of V-shaped brush strips 32 arranged along the circumferential direction of the second roller shaft 31, and the corners of all the V-shaped brush strips 32 are arranged in the same rotating direction. The scraping strip 5 is located at the trailing edge of the second opening 111, and extends along the left-right direction. In the embodiment, the scraping strip 5 is installed at the trailing edge of the bottom opening of the installation space. The left end of the scraping strip 5 is located to the left of the left edge of the second opening 111, and the right end of the scraping strip 5 is located to the right of the right edge of the second opening 111. In addition, the outer edge of the V-shaped brush strip 32 is in contact with the front wall surface of the scraping strip 5, so that the V-shaped brush strip 32 scrapes the scraping strip 5 during the rotation of the second roller brush 3, and ensures that the scraping strip 5 is clean at all times.

[0055] When the first roller brush 2 and the second roller brush 3 are both in the rotating state, the first brush piece 2a located in the part of the first opening 101 and the second brush piece located in the part of the second opening 111 are both in the state of rotating towards the suction port 40, that is, the first roller brush 2 and the second roller brush 3 both sweep the garbage on the ground into the suction port, and the fluid motion direction is shown by arrows in Figure 4 . As shown in Figure 4 , the first roller brush 2 rotates counterclockwise, and the second roller brush 3 rotates clockwise. In this way, the first roller brush 2 sweeps and peels off the long hair, particles (such as sand) and dust on the ground, and the peeled garbage is sucked into the suction port 40 located at the rear side, and the second roller brush 3 sweeps and peels off the ground cleaned by the first roller brush 2 forward, that is, peels off the water stains, small particles and long hair remaining on the ground cleaned by the first roller brush 2 forward, and the peeled garbage enters the suction port 40. The second roller brush rotates in real time to scrape the ground, improves the cleaning ability, reduces the amount of water remaining on the ground after cleaning, and has better cleaning effect, which can better meet the needs of users.

[0056] In order to discharge the large particles and garbage in time, the front wall plate 41 of the air guiding passage 4 is provided with a gap 411 at the position corresponding to the air outlet passage 43, and the gap 411 is provided with a movable plate 6 arranged to move backward to open the gap 411 and move forward to close the gap 411 relative to the front wall plate 41. In this embodiment, the movable plate 6 is an elastic plate capable of being deformed.

[0057] In the description and claims of the present disclosure, terms are used to describe various example structures, components and elements and are understood as follows. The terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting. The use of the terms "front," "back," "left," "right," "side," and the like are used for identification purposes and are not intended to convey a specific orientation.

[0058] As used herein, the term "in fluid communication" refers to the spatial relationship between two components or locations (hereinafter referred to as a first location and a second location, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow or / and be transported from the first location to the second location along a flow path. The first location and the second location can be directly connected, or they can be indirectly connected through at least one third party, such as a pipe, a channel, a conduit, a flow guide, a hole, a slot, etc. fluid passage, or a chamber allowing fluid to flow, or a combination thereof.

[0059] Example 2:

[0060] As Figures 6 to 9 shown, it is the second preferred embodiment of the present application.

[0061] The difference between the present embodiment and the above-described embodiment 1 is only in the way of realizing the movement of the movable plate 6. Specifically, the movable plate 6 is rotatably arranged on the front wall plate 41 of the air guide channel 4, and the rotation axis extends along the left-right direction. In the present embodiment, the above-described movable plate 6 moves forward and backward under the drive of the drive mechanism 7, and the power output end of the aforementioned drive mechanism 7 is drivingly connected with the movable plate 6. Specifically, the aforementioned drive mechanism 7 comprises a motor 71 and a transmission assembly 72, the power output end of the motor 71 is drivingly connected with the power input end of the transmission assembly 72, and the power output end of the transmission assembly 72 is drivingly connected with the movable plate 6. In the present embodiment, the transmission assembly 72 comprises a swing rod 721, a lifting rod 722 and a connecting rod 723, the motor 71 and the swing rod 721 are both located above the first chamber 10 of the shell 1, and the motor 71 has an output shaft extending along the left-right direction, the lifting rod 722 is located behind the output shaft and is arranged vertically, the first end of the swing rod 721 is mounted on the output shaft, the swing rod 721 is provided with a guide groove 7211 extending along the length direction thereof, the upper end of the lifting rod 722 is provided with a guide piece 7221 guidingly matched with the guide groove 7211, and the lower end of the lifting rod 722 is located in the air guide channel 4, and the front end of the connecting rod 723 is connected with the rear wall surface of the movable plate 6, and the rear end of the connecting rod 723 is rotatably connected with the lower end of the lifting rod 722.

[0062] In order to guide the movement of the lifting rod 722, the shell 1 is provided with a vertical channel 13 extending vertically, and the lifting rod 722 is arranged in the vertical channel 13, and the upper end of the lifting rod 722 is located above the vertical channel 13.

[0063] In addition, the front wall surface of the machine body 8 is provided with a sensor 82 for sensing the size of the garbage, the signal input end of the sensor 82 is electrically connected with the controller, and the signal output end of the controller is electrically connected with the motor 71, which is configured to control the operation mode of the motor 71 driving the movable plate 6 after receiving the signal collected by the sensor 82. When the sensor 82 detects larger particles (such as particles larger than a preset value), a signal is transmitted to the controller, and the controller controls the motor to work at this time. Through the transmission assembly, the movable plate 6 is driven to rotate backward. In the present embodiment, the sensor 82 has two and is arranged along the left-right direction.

[0064] As shown in Figure 9 When the movable plate 6 is opened under the drive of the above-described drive mechanism 7, the position corresponding to the suction port 40 above is blocked, and because the area of the air guide channel around the movable plate 6 suddenly decreases, the suction force increases, and the garbage collected in the gap of the first roller brush is directly and quickly sucked away; when the movable plate closes the gap 411, the amount of residual water is reduced, and good water suction effect is achieved.

Claims

1. A floor brush structure for a cleaning machine, comprising: a housing (1) having a first chamber (10) extending along a left-right direction inside the housing (1), the first chamber (10) having a first opening (101) extending along a length direction of the first chamber (10) at a bottom of the first chamber (10); a first roller brush (2) comprising a first roller shaft (21) extending along the left-right direction and rotatably arranged in the first chamber (10), and a first brush element (2a) arranged on an outer peripheral wall of the first roller shaft (21), the first brush element (2a) being partially located below the first opening (101); the housing (1) having a second chamber (11) extending along the length direction of the first chamber (10) at a rear of the first chamber (10) inside the housing (1), the second chamber (11) having a second opening (111) extending along the length direction of the second chamber (11) at a bottom of the second chamber (11), the floor brush structure further comprising: a second roller brush (3) comprising a second roller shaft (31) extending along the left-right direction and rotatably arranged in the second chamber (11), and a second brush element arranged on an outer peripheral wall of the second roller shaft (31), the second roller shaft (31) being opposite in rotation direction to the first roller shaft (21), the second brush element being partially located below the second opening (111); an air guide channel (4) arranged in the housing (1) and extending along the left-right direction between the first roller brush (2) and the second roller brush (3), the air guide channel (4) having a suction port (40) extending along a length direction of the air guide channel (4) at a bottom of the air guide channel (4), and the air guide channel (4) having an air outlet channel (43), when the first roller brush (2) and the second roller brush (3) are both in a rotating state, the first brush element (2a) located at the first opening (101) and the second brush element located at the second opening (111) are both in a state of rotating towards the suction port (40); a front wall plate (41) of the air guide channel (4) having a gap (411) corresponding to the air outlet channel (43), the gap (411) being provided with a movable plate (6) arranged to move rearward or forward relative to the front wall plate (41) to correspondingly open or close the gap (411); the floor brush structure further comprising a driving mechanism (7) for driving the movable plate (6) to rotate forward and backward, a power output end of the driving mechanism (7) being drivingly connected to the movable plate (6); the driving mechanism (7) comprising a motor (71) and a transmission assembly (72), a power output end of the motor (71) being drivingly connected to a power input end of the transmission assembly (72), and a power output end of the transmission assembly (72) being drivingly connected to the movable plate (6). ​ ​ characterized in that ​ ​ ​ ​ ​ ​ The transmission assembly (72) comprises a swing rod (721), a lifting rod (722) and a connecting rod (723), the motor (71) and the swing rod (721) are both located above the first cavity (10) of the shell (1), the motor (71) has an output shaft extending along the left-right direction, the lifting rod (722) is located behind the output shaft and is vertically arranged, the first end of the swing rod (721) is installed on the output shaft, the swing rod (721) is provided with a guide groove (7211) extending along the length direction thereof, the upper end of the lifting rod (722) is provided with a guide piece (7221) guided in the guide groove (7211), and the lower end of the lifting rod (722) is located in the air guide channel (4), the front end of the connecting rod (723) is connected with the rear wall of the movable plate (6), and the rear end of the connecting rod (723) is rotationally connected with the lower end of the lifting rod (722).

2. The brush structure of claim 1, wherein: The cross section of the air guide channel (4) gradually decreases from bottom to top.

3. The brush structure of claim 1, wherein: The front wall plate (41) of the air guide channel (4) gradually inclines forward from top to bottom, and the rear wall plate (42) of the air guide channel (4) gradually inclines backward from top to bottom.

4. The brush structure of claim 3, wherein: The cross sections of the first cavity (10) and the second cavity (11) are both arc-shaped, the front wall plate (41) of the air guide channel (4) is part of the wall plate of the first cavity (10), and the rear wall plate (42) of the air guide channel (4) is the first part of the wall plate of the second cavity (11).

5. The brush structure of claim 1, wherein: The air guide channel (4) is further provided with a scraping strip (5) located at the trailing edge of the second opening (111), the scraping strip (5) extends along the left-right direction, the left end of the scraping strip (5) is located to the left of the left edge of the second opening (111), and the right end of the scraping strip (5) is located to the right of the right edge of the second opening (111).

6. The brush structure of claim 5, wherein: The outer edge of the second brush member is in contact with the front surface of the scraping strip (5).

7. The brush structure of claim 1, wherein: The air outlet channel (43) is located at the top of the air guide channel (4).

8. The brush structure of claim 7, wherein: The air guide channel (4) is provided with an air passing section (44) located above the air outlet channel (43) and communicating with the air outlet channel (43), the air passing section (44) is located between the first rolling brush (2) and the second rolling brush (3) and is vertically arranged, along the fluid flow path, the air passing section (44) is located downstream of the air outlet channel (43).

9. The brush structure of claim 1, wherein: The outer diameter of the first rolling brush (2) is greater than the outer diameter of the second rolling brush (3).

10. The brush structure of claim 1, wherein: The first brush member (2a) comprises first brush strips (221) and second brush strips (231) arranged in sequence along the axial direction of the first roller shaft (21) and both arranged in a spiral shape, the rotation directions of the first brush strips (221) and the second brush strips (231) are opposite, and a gap (24) is left between the first brush strips (221) and the second brush strips (231), the gap (24) is arranged opposite to the air outlet channel (43).

11. The brush structure of claim 10, wherein: The first brush member (2a) further comprises a first rolling brush sleeve (22) and a second rolling brush sleeve (23) which are sleeved outside the first roller shaft (21) and arranged along the axial direction of the first roller shaft (21) in sequence, the first rolling brush sleeve (22) and the second rolling brush sleeve (23) both extend along the length direction of the first roller shaft (21) and are spaced apart, the space between the first rolling brush sleeve (22) and the second rolling brush sleeve (23) is the gap (24), the first brush strip (221) is arranged on the outer peripheral wall of the first rolling brush sleeve (22), and the second brush strip (231) is arranged on the outer peripheral wall of the second rolling brush sleeve (23).

12. The brush structure of claim 10, wherein: The second brush member is a V-shaped brush strip (32) which extends along the axial direction of the second roller shaft (31) and is V-shaped, and the corner (321) of the V-shaped brush strip (32) is arranged opposite to the air outlet channel (43).

13. The brush structure of claim 1, wherein: The left and right side walls of the air outlet channel (43) are guide walls (431) which gradually incline towards each other from bottom to top.

14. The brush structure of claim 1, wherein: The movable plate (6) is an elastic plate which can be deformed.

15. The brush structure of claim 1, wherein: The movable plate (6) is rotatably arranged on the front wall plate (41) of the air guide channel (4), and the rotation axis extends along the left-right direction.

16. The brush structure of claim 1, wherein: The shell (1) is provided with a vertical channel (13) which extends vertically, the lifting rod (722) is arranged in the vertical channel (13), and the upper end of the lifting rod (722) is located above the vertical channel (13).

17. A cleaning machine comprising a machine body (8) having a mounting space in which a floor brush structure is mounted, the bottom of the mounting space having a relief opening (811) located at the periphery of the bottom edge of the housing (1), characterized in that, The floor brush structure is the floor brush structure according to any one of claims 1 to 16, a sensor (82) for sensing the size of garbage is arranged on the front wall surface of the machine body (8), the signal input end of the sensor (82) is electrically connected with the controller, the signal output end of the controller is electrically connected with the motor (71), and the controller is configured to control the motor (71) to drive the movable plate (6) to operate in a working condition after receiving the signal collected by the sensor (82).

18. A cleaning machine comprising a floor brush structure, a fan and a separating structure for separating at least dust and air, characterized in that: The floor brush structure is the floor brush structure according to any one of claims 1 to 16, along the fluid flow path, the floor brush structure, the separation structure and the fan are arranged in sequence, and the air inlet of the separation structure is connected with the air guide channel (4).

19. The cleaning machine of claim 18, wherein: The cleaning machine is a sweeping machine.

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