Cleaning structure and cleaning machine for use in cleaning machines

Abstract

This invention relates to a cleaning structure for a cleaning machine and a cleaning machine in general. The cleaning structure includes a housing and a roller brush. A roller shaft has a receiving groove extending circumferentially along at least one side of the brush to accommodate hair. The roller shaft is hollow, forming a cavity. A sliding groove is formed on the roller shaft at a position corresponding to the receiving groove, connecting the receiving groove and the cavity. The sliding groove extends along the length of the roller shaft. Movable blades, arranged to move along the length of the sliding groove, are disposed within the cavity at positions corresponding to the receiving groove. Each movable blade has a cutting portion that penetrates into the corresponding sliding groove. The receiving groove is located on the movement path of the cutting portion. This design achieves the cutting of hair wrapped around at least one end of the roller shaft, preventing the roller shaft's rotation from being affected by hair wrapping at the end, and reducing the tediousness of manually cutting hair.

Description

Technical Field

[0001] This invention belongs to the field of household washing and cleaning technology, specifically relating to a cleaning structure for a cleaning machine and the cleaning machine itself. Background Technology

[0002] Currently, cleaning machines are floor scrubbers, vacuum cleaners, or sweepers. They suck up a mixture of dust and moisture from the ground into their storage chamber.

[0003] Existing cleaning machines, such as the Chinese utility model patent "A Roller Brush, Cleaning Mechanism, and Sweeper," patent number ZL202123250101.9 (authorization announcement number CN216932986U), disclose a roller brush, including a first roller brush and a second roller brush, with a gap between them. Both the first and second roller brushes have a spiral structure. When the roller brush rotates, the debris attached to it can be transferred from both sides to the middle gap. While this patent achieves the transfer of debris to the middle gap, hair can easily become entangled in the gap, increasing the difficulty of cleaning within the roller brush gap. Furthermore, at least one end of the roller brush may also be entangled with hair, further increasing the difficulty of hair removal.

[0004] Therefore, further improvements are needed to the existing cleaning structures used in cleaning machines. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a cleaning structure for a cleaning machine that automatically cleans hair wrapped around at least one end of a roller shaft, in view of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning structure with partitioned cutting.

[0007] The third technical problem to be solved by the present invention is to provide a cleaning machine having the above-described cleaning structure.

[0008] The fourth technical problem to be solved by the present invention is to provide a cleaning machine with partition cutting.

[0009] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a cleaning structure for a cleaning machine, with the traveling direction of the cleaning machine as forward, comprising:

[0010] The housing has a chamber extending in the left-right direction inside, the bottom of the chamber has a suction port extending in the length direction, and the chamber also has an air outlet;

[0011] A roller brush is used to sweep and brush a surface to be cleaned. It includes a roller shaft that is rotatably disposed in the chamber and a brush component disposed on the outer peripheral wall of the roller shaft, wherein the brush component is partially located below the suction port.

[0012] The roller shaft is characterized in that it has a receiving groove extending circumferentially along the roller shaft to accommodate hair on at least one of the left and right sides of the brush. The roller shaft is hollow and has a cavity. The roller shaft has a sliding groove at the position corresponding to the receiving groove, which connects the receiving groove and the cavity. The sliding groove extends along the length direction of the roller shaft. The cavity has movable blades arranged to move along the length direction of the sliding groove at the positions corresponding to the receiving groove. The movable blades have a cutting part that penetrates into the corresponding sliding groove. The receiving groove is located on the movement path of the cutting part.

[0013] In order to cut the hair wrapped around both ends of the roller, the roller has the aforementioned receiving groove, sliding groove and movable blade on the outer periphery of both the left and right sides of the brush.

[0014] To improve cutting efficiency, the movable blade has a corresponding fixed blade arranged side by side. The cutting part is a cutting tooth. The fixed blade is located in the cavity and has a cutting groove that penetrates into the receiving groove. The cutting tooth and the cutting groove cooperate to form a cutting group.

[0015] Preferably, the device further includes an elastic element that ensures the movable blade always tends to move in the direction of the corresponding fixed blade to fit snugly against the fixed blade. The elastic element acts on the movable blade. By ensuring the fixed blade and the movable blade fit snugly against each other, a better cutting effect is achieved.

[0016] In order to guide the movement of the movable blade along the length of the chute, the fixed blade is provided with a guide groove extending along the length of the roller shaft, and the movable blade is provided with a guide member that guides and cooperates with the guide groove.

[0017] Preferably, the movable blade is provided with a mounting plate, and the movable blade is located between the mounting plate and the fixed blade. The guide member is disposed on the mounting plate, and the movable blade has a through hole for the guide member to pass through. Alternatively, the guide member can be directly disposed on the movable blade.

[0018] To improve cutting efficiency, both the movable blade and the fixed blade are plate-shaped, and the movable blade has cutting teeth on its two opposite first side edges, with each first side edge corresponding to a sliding groove. The fixed blade has cutting grooves on its opposite two side edges.

[0019] Preferably, the receiving groove is connected to the corresponding slide groove near its center. Alternatively, it can be connected to the corresponding slide groove at a position off-center.

[0020] In order to gather hair from both ends to the middle, the brush includes a first brush strip and a second brush strip arranged in a spiral along the axial direction of the roller shaft. The first brush strip and the second brush strip have opposite spiral directions and a gap between them. The roller shaft has the receiving groove, the sliding groove and the movable blade at the position of the gap.

[0021] Preferably, all the movable blades move in the same direction.

[0022] Preferably, the movable blade is constrained on the roller shaft, and two adjacent movable blades are connected by a connecting rod, and each is rotatably connected to the corresponding end of the connecting rod. The system also includes a transmission assembly for driving the connecting rod to move left and right, thereby driving the movable blade to move. The transmission assembly is located in the cavity and connects the housing and the connecting rod.

[0023] Preferably, the two receiving grooves away from the transmission component are both first receiving grooves formed on the outer peripheral wall of the roller shaft, and the receiving groove adjacent to the transmission component is a second receiving groove. The roller shaft is fitted with a bushing corresponding to the position of the transmission component. The bushing and the brush are arranged at intervals along the axial direction of the roller shaft, and a gap is left between them and the brush on the corresponding side to form the second receiving groove.

[0024] The transmission assembly can have various structural forms. It can employ a nut and a screw extending axially along the roller shaft and fixed relative to the housing. Specifically, the nut is threaded onto the screw, and a connecting rod on the movable blade is connected to the nut. Thus, during the rotation of the roller brush, the movable blade is driven to move back and forth along the axial direction of the roller shaft. Other structural forms can also be used, but preferably, a fixed shaft coaxially arranged with the roller shaft is fixed to one end wall at each of the left and right ends of the chamber. The fixed shaft is partially located within the cavity of the roller shaft and is spaced apart from the movable blade along the axial direction of the roller shaft. The transmission assembly includes:

[0025] An adapter is provided on the free end of the fixed shaft, and an eccentric shaft extending in the direction of the movable blade is eccentrically provided on the end face facing the movable blade.

[0026] A transmission rod, the first end of which is rotatably connected to the connecting rod;

[0027] The oscillating component is rotatably mounted on the roller shaft via a mounting shaft and is rotatably connected to the second end of the transmission rod via a connecting shaft arranged parallel to and spaced apart from the mounting shaft. The oscillating component has a limiting groove on the side facing the adapter seat for the eccentric shaft to slide and constrain therein, and the oscillating component is in an oscillating state when the roller shaft is rotating relative to the fixed shaft.

[0028] Preferably, the limiting groove extends along the length of the connecting shaft, and the two opposite sidewalls of the limiting groove are inclined walls that gradually tilt toward each other in a direction away from the moving blade.

[0029] In order to ensure that the cut hair is discharged in a timely manner, the air outlet is located behind the roller and is arranged opposite to the gap.

[0030] To achieve reliable hair collection, the peripheral wall of the chamber has a hair-pressing plate extending towards the gap at a position corresponding to the gap. The hair-pressing plate is located above the air outlet and partially within the gap. Thus, under the action of the hair-pressing plate, the diameter of the hair wrapped around the hair in the receiving groove decreases, facilitating hair collection.

[0031] The first and second brush strips can be directly formed on the roller shaft, or they can be indirectly set on the roller shaft through a brush sleeve. However, preferably, the brush component includes a first brush sleeve and a second brush sleeve sleeved around the roller shaft and arranged at intervals along the axial direction of the roller shaft. The interval between the first brush sleeve and the second brush sleeve is the gap. The first brush sleeve and the second brush sleeve both extend along the length direction of the roller shaft, and both have clearance grooves connected to the corresponding grooves at the corresponding groove positions. The first brush strip is set on the outer peripheral wall of the first brush sleeve, and the second brush strip is set on the outer peripheral wall of the second brush sleeve, and both are partially located below the suction port.

[0032] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: the bottom of the housing is provided with a flexible member for contacting the ground to be cleaned, the flexible member is located in front of the suction port and is arranged opposite to the area between two adjacent receiving slots.

[0033] The flexible element can be a vertically extending flexible strip or other structures, but preferably, the flexible element is a bundle of hair formed by multiple vertically arranged flexible hairs.

[0034] The technical solution adopted by the present invention to solve the third technical problem mentioned above is as follows: a cleaning machine, comprising a body and a cleaning structure, wherein the body has a bottom opening for the installation space in which the cleaning structure is installed, characterized in that the cleaning structure is the cleaning structure described above, and the bottom opening is located on the periphery of the bottom edge of the housing.

[0035] The cleaning machine is either a sweeper or a floor scrubber, but preferably, it is a sweeping robot.

[0036] The technical solution adopted by the present invention to solve the fourth technical problem mentioned above is as follows: a cleaning machine, comprising a body and a cleaning structure, wherein the body has an open bottom for installing the cleaning structure therein, characterized in that the cleaning structure is the aforementioned cleaning structure, and the bottom of the body is provided with a flexible member for contacting the ground to be cleaned, the flexible member being disposed in front of the suction port and arranged opposite to the area between two adjacent receiving slots.

[0037] The flexible element can be a vertically extending flexible strip or other structures, but preferably, the flexible element is a bundle of hairs formed by multiple flexible hair grafts.

[0038] Compared with the prior art, the advantages of the present invention are as follows: In this cleaning structure, the roller has a receiving groove extending circumferentially along one side of the left and right sides of the brush to accommodate hair, and a sliding groove is provided at the corresponding position of the receiving groove. The movable blade has a cutting part that penetrates into the corresponding sliding groove, and the movable blade is arranged to move along the corresponding sliding groove. The cutting part cuts the hair in the corresponding receiving groove, thereby realizing the cutting of hair wrapped around at least one end of the roller. This avoids the roller end from being affected by hair wrapping around it, and at the same time reduces the tediousness of manually cutting hair, which better meets the needs of users. Attached Figure Description

[0039] Figure 1 This is a partial structural diagram of the sweeper in Embodiment 1;

[0040] Figure 2 for Figure 1 Another structural diagram;

[0041] Figure 3 for Figure 1 A cross-sectional view of the clean structure in the middle;

[0042] Figure 4 This is a cross-sectional view of the clean structure in the figure from another angle;

[0043] Figure 5 for Figure 2 A cross-sectional view of the clean structure in the middle;

[0044] Figure 6 for Figure 5 Enlarged structural diagram of section I;

[0045] Figure 7 for Figure 5 Enlarged structural diagram of section II;

[0046] Figure 8 for Figure 1 A partial structural diagram of the cleaning structure;

[0047] Figure 9 for Figure 8 Partial structural diagram;

[0048] Figure 10 This is a partial structural diagram of the sweeper in Embodiment 2. Detailed Implementation

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0050] like Figures 1 to 9 The image shows a first preferred embodiment of the present invention. In this embodiment, the cleaning machine is a robotic vacuum cleaner, with the direction of travel of the robotic vacuum cleaner as forward.

[0051] like Figure 1 As shown, the sweeper includes a body 8 and a cleaning structure. The body 8 has a bottom opening 811 for the installation space in which the cleaning structure is installed.

[0052] like Figures 2 to 8 As shown, the cleaning structure includes a housing 1, a roller brush 2, a movable blade 3, a connecting rod 4, a transmission assembly 5, an elastic element, a fixed blade 6, and a flexible element 7. The housing 1 has an interior chamber 10 extending in a left-right direction. The bottom of the housing 1 has a suction port 101 extending in a left-right direction and communicating with the chamber 10, and the housing 1 also has an air outlet 102 communicating with the chamber 10. Along the fluid flow path, the air outlet 102 is located downstream of the suction port 101. The bottom opening 811 of the aforementioned installation space is located on the outer periphery of the bottom edge of the housing 1.

[0053] The roller brush 2 is used to sweep the surface to be cleaned. The roller brush 2 includes a roller shaft 21 rotatably disposed in the chamber 10 and brush members 2a disposed on the outer peripheral wall of the roller shaft 21. The roller shaft 21 extends in the left-right direction. The brush members 2a include a first brush strip 221 and a second brush strip 231 arranged in a spiral along the axial direction of the roller shaft 21. The first brush strip 221 and the second brush strip 231 have opposite directions of rotation and a gap 24 is left between them. Specifically, the aforementioned brush component 2a includes a first roller brush sleeve 22 and a second roller brush sleeve 23 that are sleeved around the roller shaft 21 and arranged at intervals along the axial direction of the roller shaft 21. The interval between the first roller brush sleeve 22 and the second roller brush sleeve 23 is the gap 24. Both the first roller brush sleeve 22 and the second roller brush sleeve 23 extend along the length direction of the roller shaft 21, and both have a clearance groove 01 that communicates with the slide groove 212 at the corresponding position. The first brush strip 221 is disposed on the outer peripheral wall of the first roller brush sleeve 22, and the second brush strip 231 is disposed on the outer peripheral wall of the second roller brush sleeve 23, and both are partially located below the suction port 101.

[0054] The roller 21 has three receiving grooves 211 for accommodating hair at the outer periphery of the left and right sides of the brush 2a and at the corresponding gaps 24. The receiving grooves 211 extend circumferentially along the roller 21. The roller 21 has a hollow interior forming a cavity 210, and at each position corresponding to the receiving groove 211, a sliding groove 212 is formed connecting the receiving groove 211 and the cavity 210. The sliding groove 212 extends along the length of the roller 21. The receiving grooves 211 and the corresponding sliding grooves 212 are connected near the center.

[0055] The aforementioned air outlet 102 is located behind the roller 21 and is arranged opposite to the gap 24. Furthermore, to ensure reliable hair accumulation within the receiving groove, the peripheral wall of the chamber 10 has a hair-pressing plate 12 extending towards the gap 24 at a position corresponding to the gap 24. The hair-pressing plate 12 is located above the air outlet 102 and partially within the gap 24. The presence of the hair-pressing plate presses the hair into the receiving groove, ultimately causing the hair to concentrate and accumulate within the receiving groove.

[0056] Within the cavity 210, at positions corresponding to the receiving groove 211, there are movable blades 3 arranged to move along the length of the slide groove 212. Each movable blade 3 has a cutting portion that penetrates into the corresponding slide groove 212, and the receiving groove 211 is located on the movement path of the corresponding cutting portion. Thus, each receiving groove 211 corresponds to one slide groove 212 and one movable blade 3. The aforementioned movable blades 3 are constrained on the roller shaft 21, and the movement directions of all the aforementioned movable blades 3 are the same. Specifically, two adjacent movable blades 3 are connected by a connecting rod 4, and are rotatably connected to the corresponding end of the connecting rod 4, and move along the slide groove 212 under the transmission drive of the transmission assembly 5.

[0057] A fixed shaft 11, coaxially arranged with the roller shaft 21, is fixed to one end wall at each of the left and right ends of the chamber 10. The fixed shaft 11 is partially located in the cavity 210 of the roller shaft 21 and is spaced apart from the movable blade 3 along the axial direction of the roller shaft 21. The aforementioned transmission assembly 5 is located in the cavity 210 and connects the housing 1 and the connecting rod 4, thus driving the movable blade 3 to move by moving the connecting rod 4. In this embodiment, the two receiving grooves 211 away from the transmission assembly 5 are both first receiving grooves formed on the outer peripheral wall of the roller shaft 21, and the receiving groove adjacent to the transmission assembly is the second receiving groove. A bushing 25 is sleeved on the roller shaft 21 at the position corresponding to the transmission assembly 5. In this embodiment, the bushing 25 is partially located on the periphery of the fixed shaft 11, and the bushing 25 and the brush 2a are spaced apart along the axial direction of the roller shaft 21, with a gap between them to form the second receiving groove. The transmission assembly 5 includes an adapter seat 51, a transmission rod 52, and a swinging member 53. The adapter seat 51 is located on the free end of the fixed shaft 11, and an eccentric shaft 511 extending towards the movable blade 3 is eccentrically positioned on the end face facing the movable blade 3. The first end of the transmission rod 52 is rotatably connected to the connecting rod 4, and the second end of the transmission rod 52 is rotatably connected to the swing member 53 via the connecting shaft 532. The swing member 53 is rotatably mounted on the roller shaft 21 via the mounting shaft 531, and a limiting groove 533 is provided on the side of the swing member 53 facing the adapter seat 51, in which the eccentric shaft 511 is slidably constrained. When the roller shaft 21 is rotating relative to the fixed shaft 11, the swing member 53 is in a swinging state. The mounting shaft 531 and the connecting shaft 532 are arranged side by side at intervals. In this embodiment, the limiting groove 533 extends along the length direction of the connecting shaft 532, and the two opposite sidewalls of the limiting groove 533 are inclined walls 5331 that gradually slope towards each other in the direction away from the movable blade 3.

[0058] Each movable blade 3 corresponds to a fixed blade 6 arranged side-by-side with it. The movable blades 3 and fixed blades 6 are arranged along the length of the connecting shaft 532. The aforementioned cutting part consists of cutting teeth 31. The fixed blade 6 is located within the cavity 210 and has cutting grooves 61 that penetrate into the receiving groove 211. The cutting teeth 31 and cutting grooves 61 cooperate to form a cutting assembly. Specifically, both the movable blade 3 and the fixed blade 6 are plate-shaped, and each of the two opposite first side edges of the movable blade 3 has multiple cutting teeth 31. Each first side edge corresponds to a sliding groove 212, resulting in two sliding grooves 212 arranged opposite to each other. The fixed blade 6 has cutting grooves 61 on both opposite side edges.

[0059] The fixed blade 6 has a guide groove 62 extending along the length of the roller shaft 21, and the movable blade 3 has a guide member 321 that guides and cooperates with the guide groove 62. Specifically, the movable blade 3 is provided with a mounting plate 32, and the movable blade 3 is located between the mounting plate 32 and the fixed blade 6. The guide member 321 is provided on the mounting plate 32, and the movable blade 3 has a through hole for the guide member 321 to pass through. In order to achieve a better cutting effect, an elastic member acts on the movable blade 3, and makes the movable blade 3 always tend to move in the direction corresponding to the fixed blade 6 to fit against the fixed blade 6. In this embodiment, the elastic member is a spring 9 located between the mounting plate and the roller shaft.

[0060] To allow hair to enter in sections, a flexible element 7 is provided at the bottom of the housing 1 for contact with the surface to be cleaned. The flexible element 7 is a bundle of hair formed by multiple vertically extending flexible bristles. The flexible element 7 is located in front of the suction port 101 and is arranged opposite to the area between two adjacent receiving grooves 211, so there are two sets of flexible elements 7. The distance between the flexible element 7 on the left and the left edge of the brush 2a is L1, and the distance between the flexible element 7 on the right and the right edge of the brush 2a is L2. Both distances L1 and L2 are dimensions along the axial direction of the roller shaft and are both 5~20mm. In this embodiment, the left edge of the first roller brush sleeve 22 is the left edge of the brush 2a, and the right edge of the second roller brush sleeve 23 is the right edge of the brush 2a.

[0061] The presence of the aforementioned flexible component 7 divides the front side of the suction port 101 of the housing into three areas, each area corresponding to a set of movable blades 3 and fixed blades 6. In this embodiment, the flexible component 7 is located on circle A, where the turning radius R of the sweeping robot is located. Thus, when the sweeping robot moves forward and turns, it can absorb more hair, reducing blind spots in hair pickup.

[0062] As the robot vacuum moves, the hair, blocked by the flexible component 7, is divided into three parts: some hair enters the left area to the left of the left flexible component 7, some hair enters the right area to the right of the right flexible component 7, and some hair enters the middle area between the two sets of flexible components 7. These hairs are then cut by the corresponding movable cutting components, achieving zoned cutting and effectively balancing the cutting pressure of the three sets (moving blades and fixed blades). In the above embodiment, the turning radius of the robot vacuum is the radius of rotation when the robot vacuum turns. The contact described in the above claims and embodiments also includes interference fit with the ground.

[0063] In the specification and claims of this invention, terms indicating direction, such as "front," "rear," "left," "right," and "side," are used to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limiting. Example

[0064] like Figure 10 The image shows the second preferred embodiment of the present invention.

[0065] The only difference between this embodiment and Embodiment 1 is the location of the flexible component 7. Specifically, the flexible component 7 is located at the bottom of the body 8 to contact the surface to be cleaned. The flexible component 7 is positioned in front of the suction port 101 and is arranged opposite to the area between two adjacent receiving slots 211.

Claims

1. A cleaning structure for a cleaning machine, with the direction of travel of the cleaning machine as forward, comprising: The housing (1) has a chamber (10) extending in the left-right direction inside, the bottom of the chamber (10) has a suction port (101) extending in the length direction, and the chamber (10) also has an air outlet (102). A roller brush (2) is used to sweep the surface to be cleaned. It includes a roller (21) rotatably disposed in the chamber (10) and a brush (2a) disposed on the outer peripheral wall of the roller (21). The brush (2a) is partially located below the suction port (101). Its features are, The roller (21) has a receiving groove (211) extending circumferentially along the roller (21) to receive hair on the outer periphery of at least one of the left and right sides of the brush (2a). The roller (21) is hollow inside to form a cavity (210). The roller (21) has a sliding groove (212) at the position corresponding to the receiving groove (211) to connect the receiving groove (211) and the cavity (210). The sliding groove (212) extends along the length direction of the roller (21). The cavity (210) is provided with a movable blade (3) at the position corresponding to the receiving groove (211) and arranged to move along the length direction of the sliding groove (212). The movable blade (3) has a cutting part that penetrates into the corresponding sliding groove (212). The receiving groove (211) is located on the movement path of the cutting part.

2. The cleaning structure according to claim 1, characterized in that: The roller (21) has the receiving groove (211), sliding groove (212) and movable blade (3) on the outer periphery of the left and right sides of the brush (2a).

3. The cleaning structure according to claim 1, characterized in that: The movable blade (3) has a corresponding fixed blade (6) arranged side by side with the movable blade (3). The cutting part is a cutting tooth (31). The fixed blade (6) is located in the cavity (210) and has a cutting groove (61) that penetrates into the receiving groove (211). The cutting tooth (31) and the cutting groove (61) cooperate to form a cutting group.

4. The cleaning structure according to claim 3, characterized in that: It also includes an elastic element that causes the movable blade (3) to always have a tendency to move toward the corresponding fixed blade (6) to fit against the fixed blade (6), and the elastic element acts on the movable blade (3).

5. The cleaning structure according to claim 4, characterized in that: The fixed blade (6) has a guide groove (62) extending along the length of the roller shaft (21), and the movable blade (3) is provided with a guide member (321) that guides and cooperates with the guide groove (62).

6. The cleaning structure according to claim 5, characterized in that: The movable blade (3) is provided with a mounting plate (32), and the movable blade (3) is located between the mounting plate (32) and the fixed blade (6). The guide (321) is provided on the mounting plate (32), and the movable blade (3) has a through hole for the guide (321) to pass through.

7. The cleaning structure according to claim 4, characterized in that: Both the movable blade (3) and the fixed blade (6) are plate-shaped, and the movable blade (3) has cutting teeth (31) on its two opposite first side edges. Each first side edge corresponds to a groove (212), and the fixed blade (6) has cutting grooves (61) on its opposite two side edges.

8. The cleaning structure according to claim 1, characterized in that: The receiving groove (211) is connected to the corresponding sliding groove (212) near the center.

9. The cleaning structure according to any one of claims 1 to 8, characterized in that: The brush (2a) includes a first brush bar (221) and a second brush bar (231) arranged in a spiral pattern along the axial direction of the roller shaft (21). The first brush bar (221) and the second brush bar (231) have opposite spiral directions and a gap (24) between them. The roller shaft (21) has the receiving groove (211), the sliding groove (212) and the movable blade (3) at the position of the gap (24).

10. The cleaning structure according to claim 9, characterized in that: The movement directions of each of the movable blades (3) are the same.

11. The cleaning structure according to claim 10, characterized in that: The movable blade (3) is constrained on the roller shaft (21). Two adjacent movable blades (3) are connected by a connecting rod (4) and are rotatably connected to the corresponding end of the connecting rod (4). The system also includes a transmission assembly (5) for driving the connecting rod (4) to move in the left and right directions and thus driving the movable blade (3) to move. The transmission assembly (5) is located in the cavity (210) and connects the housing (1) and the connecting rod (4).

12. The cleaning structure according to claim 11, characterized in that: The receiving groove (211) away from the transmission component (5) is the first receiving groove opened on the outer peripheral wall of the roller (21), and the receiving groove adjacent to the transmission component is the second receiving groove. The roller (21) is fitted with a bushing (25) corresponding to the position of the transmission component (5). The bushing (25) and the brush (2a) are arranged at an axial distance along the roller (21), and a gap is left between them and the brush (2a) on the corresponding side to form the second receiving groove.

13. The cleaning structure according to claim 11, characterized in that: A fixed shaft (11) coaxially arranged with the roller shaft (21) is fixed on one end wall at each of the left and right ends of the chamber (10). The fixed shaft (11) is partially located in the cavity (210) of the roller shaft (21) and is spaced apart from the movable blade (3) along the axial direction of the roller shaft (21). The transmission assembly (5) includes: The adapter (51) is disposed on the free end of the fixed shaft (11), and an eccentric shaft (511) extending toward the movable blade (3) is eccentrically disposed on the end face facing the movable blade (3). The transmission rod (52) has its first end rotatably connected to the connecting rod (4); The swing member (53) is rotatably mounted on the roller shaft (21) via a mounting shaft (531) and is rotatably connected to the second end of the transmission rod (52) via a connecting shaft (532) arranged parallel to and spaced apart from the mounting shaft (531). The swing member (53) has a limiting groove (533) on the side facing the adapter (51) for the eccentric shaft (511) to slide and constrain therein. When the roller shaft (21) is rotating relative to the fixed shaft (11), the swing member (53) is in a swinging state.

14. The cleaning structure according to claim 13, characterized in that: The limiting groove (533) extends along the length direction of the connecting shaft (532), and the two opposite sidewalls of the limiting groove (533) are inclined walls (5331) that gradually tilt towards each other in a direction away from the movable blade (3).

15. The cleaning structure according to claim 9, characterized in that: The air outlet (102) is located behind the roller (21) and is arranged opposite to the gap (24).

16. The cleaning structure according to claim 9, characterized in that: The peripheral wall of the chamber (10) has a pressure plate (12) extending toward the gap (24) at a position corresponding to the gap (24). The pressure plate (12) is located above the air outlet (102) and is partially located within the gap (24).

17. The cleaning structure according to claim 9, characterized in that: The brush component (2a) includes a first roller brush sleeve (22) and a second roller brush sleeve (23) sleeved around the roller shaft (21) and spaced apart along the axial direction of the roller shaft (21). The gap (24) is the distance between the first roller brush sleeve (22) and the second roller brush sleeve (23). Both the first roller brush sleeve (22) and the second roller brush sleeve (23) extend along the length direction of the roller shaft (21), and both have a clearance groove (01) connected to the corresponding slide groove (212) at the position. The first brush bar (221) is disposed on the outer peripheral wall of the first roller brush sleeve (22), and the second brush bar (231) is disposed on the outer peripheral wall of the second roller brush sleeve (23), and both are partially located below the suction port (101).

18. The cleaning structure according to claim 3, characterized in that: The bottom of the housing (1) is provided with a flexible member (7) for contacting the ground to be cleaned. The flexible member (7) is located in front of the suction port (101) and is arranged opposite to the area between two adjacent receiving slots (211).

19. The cleaning structure according to claim 18, characterized in that: The flexible component (7) is formed by multiple vertically arranged flexible hair bundles.

20. A cleaning machine comprising a body (8) and a cleaning structure, the body (8) having a bottom opening (811) for mounting the cleaning structure therein, characterized in that, The cleaning structure is the cleaning structure according to any one of claims 1 to 19, and the bottom opening (811) is located on the periphery of the bottom periphery of the housing (1).

21. The cleaning machine according to claim 20, characterized in that: The cleaning machine is a robotic vacuum cleaner.

22. A cleaning machine comprising a body (8) and a cleaning structure, said body (8) having a bottom opening (811) for mounting the cleaning structure therein, characterized in that, The cleaning structure is the cleaning structure described in any one of claims 9 to 17. The bottom of the body (8) is provided with a flexible member (7) for contacting the ground to be cleaned. The flexible member (7) is located in front of the suction port (101) and is arranged opposite to the area between two adjacent receiving slots (211).

23. The cleaning machine according to claim 22, characterized in that: The flexible component (7) is formed by multiple vertically arranged flexible hair bundles.

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