Cleaning structure for cleaning machine and cleaning machine

Abstract

The invention relates to a cleaning structure used for a cleaning machine and the cleaning machine, the cleaning structure used for the cleaning machine comprises a shell and a rolling brush, a roller shaft is provided with a containing groove on the periphery of at least one of the left side and the right side of the rolling brush, the containing groove extends in the circumferential direction of the roller shaft and is used for containing hair, and the interior of the roller shaft is hollow to form a cavity. A sliding groove communicated with the containing groove and the cavity is formed in the position, corresponding to the containing groove, of the roller shaft, and the sliding groove extends in the length direction of the roller shaft. Movable cutters capable of moving in the length direction of the sliding grooves are arranged at the positions, corresponding to the containing grooves, in the cavity, the movable cutters are provided with cutting parts penetrating into the corresponding sliding grooves, and the containing grooves are located on the moving paths of the cutting parts. Hair wound around at least one end of the roller shaft is cut, it is avoided that rotation of the roller shaft is affected due to the fact that the hair is wound around the end of the roller shaft, and meanwhile complexity caused by manual hair cutting is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of household washing and cleaning, and in particular relates to a cleaning structure for a cleaning machine and a cleaning machine. Background Art

[0002] Currently, the cleaning machine is a floor scrubber, a vacuum cleaner or a sweeper, and the cleaning machine sucks a mixture of dust mixed with water vapor on the ground into its storage chamber.

[0003] Existing cleaning machines, such as the Chinese utility model patent "A roller brush rod and cleaning mechanism and sweeper", whose patent number is ZL202123250101.9 (authorization announcement number is CN216932986U), disclose a roller brush rod, including a first roller brush rod and a second roller brush rod, there is a gap between the first roller brush rod and the second roller brush rod, the first roller brush rod and the second roller brush rod both adopt a spiral structure, when the roller brush rod rotates, the garbage attached to the roller brush rod can be transferred from both sides to the middle gap. Although the above patent realizes the transfer of garbage to the middle gap, hair is easily entangled in the gap, which increases the difficulty of cleaning in the roller brush gap; in addition, at least one end of the roller brush may also have the possibility of hair entanglement, which further increases the difficulty of hair cleaning.

[0004] Therefore, it is necessary to further improve the existing cleaning structure for 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 for automatically cleaning hair entangled on at least one end of the roller shaft in view of the current status of the above-mentioned prior art.

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

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

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

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

[0010] A shell having a chamber extending in the left-right direction, a bottom of the chamber having a sewage suction port extending in the length direction thereof, and the chamber also having an air outlet;

[0011] A roller brush is used to sweep the surface to be cleaned, comprising a roller shaft rotatably arranged in the chamber and a brush member arranged on the outer peripheral wall of the roller shaft, wherein a part of the brush member is located below the dirt suction port;

[0012] It is characterized in that the roller shaft has a accommodating groove extending along the circumference of the roller shaft for accommodating hair on the outer periphery of at least one of the left and right sides of the brush member, the interior of the roller shaft is hollow to form a cavity, and the roller shaft is provided with a slide groove connecting the accommodating groove and the cavity at a position corresponding to the accommodating groove, and the slide groove extends along the length direction of the roller shaft; a movable knife arranged to be movable along the length direction of the slide groove is provided in the cavity at a position corresponding to the accommodating groove, the movable knife has a cutting part that penetrates into the corresponding slide groove, and the accommodating groove is located on the movement path of the cutting part.

[0013] In order to cut the hair wound around the two ends of the roller, the roller is provided with the accommodating groove, the sliding groove and the movable knife on the outer periphery of the left and right sides of the brush.

[0014] In order to improve cutting efficiency, the movable knife corresponds to a fixed knife arranged side by side with the movable knife, the cutting part is a cutting tooth, the fixed knife is located in the cavity, and has a cutting groove penetrating into the accommodating groove, and the cutting tooth and the cutting groove cooperate to form a cutting group.

[0015] Preferably, an elastic member is also included to make the movable knife always have a tendency to move toward the corresponding fixed knife to be close to the fixed knife, and the elastic member acts on the movable knife. By keeping the fixed knife and the movable knife close to each other, a better cutting effect is achieved.

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

[0017] Preferably, the movable knife is provided with a mounting plate, and the movable knife is located between the mounting plate and the fixed knife, the guide member is provided on the mounting plate, and the movable knife is provided with a through hole for the guide member to pass through. In addition, the guide member can also be directly provided on the movable knife.

[0018] In order to improve cutting efficiency, the movable knife and the fixed knife are both plate-shaped, and the two opposite first side edges of the movable knife have the cutting teeth, each first side edge corresponds to a sliding groove, and the opposite side edges of the fixed knife have the cutting grooves.

[0019] Preferably, the accommodating groove is connected to a position adjacent to the center of the corresponding sliding groove. In addition, the accommodating groove can also be connected to a position deviating from the center of the corresponding sliding groove.

[0020] In order to gather the hair from both ends to the middle, the brush element includes a first brush bar and a second brush bar which are sequentially arranged along the axial direction of the roller shaft and are both arranged in a spiral shape. The first brush bar and the second brush bar have opposite rotation directions and a gap is left between them. The roller shaft has the accommodating groove, the sliding groove and the movable knife at the position of the gap.

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

[0022] Preferably, the movable knife is constrained on the roller shaft, and two adjacent movable knives are connected by a connecting rod and are rotatably connected to the corresponding ends of the connecting rod. It also includes a transmission assembly for driving the connecting rod to move along the left and right directions and then driving the movable knife to move. The transmission assembly is arranged in the cavity and connects the shell and the connecting rod.

[0023] Preferably, the two accommodating grooves away from the transmission assembly are both first accommodating grooves opened on the outer peripheral wall of the roller shaft, and the accommodating groove adjacent to the transmission assembly is the second accommodating groove. The roller shaft is provided with a sleeve at a position corresponding to the transmission assembly, and the sleeve and the brush member are arranged at an interval along the axial direction of the roller shaft, and a gap is left between the brush member on the corresponding side to form the second accommodating groove.

[0024] There are many structural forms of the transmission assembly, which can be in the form of a nut and a screw extending along the axial direction of the roller shaft and relatively fixed to the shell. Specifically, the nut is threadedly connected to the screw, and the connecting rod on the movable knife is connected to the nut, so that the movable knife is driven to move back and forth along the axial direction of the roller shaft during the rotation of the roller brush; other structural forms can also be adopted, but preferably, a fixed shaft coaxially arranged with the roller shaft is relatively fixed on one of the end walls at the left and right ends of the chamber, and the fixed shaft is partially located in the cavity of the roller shaft and is spaced apart from the movable knife along the axial direction of the roller shaft. The transmission assembly includes:

[0025] An adapter seat, which is arranged on the free end of the fixed shaft, and an eccentric shaft extending toward the movable knife is eccentrically arranged on the end surface facing the movable knife;

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

[0027] A swinging member is rotatably arranged on the roller shaft through an installation shaft, and is rotatably connected to the second end of the transmission rod through a connecting shaft arranged side by side with the installation shaft. A limiting groove is provided on the side of the swinging member facing the adapter seat for the eccentric shaft to be slidably constrained therein, and when the roller shaft is in a rotating state relative to the fixed shaft, the swinging member is in a swinging state.

[0028] Preferably, the limiting groove extends along the length direction of the connecting shaft, and two opposite side walls of the limiting groove are inclined walls which gradually incline toward each other in a direction away from the movable knife.

[0029] In order to discharge the cut hair in time, the air outlet is located behind the roller shaft and arranged opposite to the gap.

[0030] In order to achieve reliable hair gathering, the peripheral wall of the chamber has a pressing plate extending toward the gap at a position corresponding to the gap, and the pressing plate is located above the air outlet, and a part of the pressing plate is located in the gap. In this way, the hair winding diameter in the receiving groove becomes smaller under the action of the pressing plate, which is convenient for the gathering and collection of hair.

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

[0032] The technical solution adopted by the present invention to solve the second technical problem is: a flexible member for contacting the floor to be cleaned is arranged at the bottom of the shell, and the flexible member is arranged in front of the sewage suction port and is arranged opposite to the area between two adjacent accommodating grooves.

[0033] The flexible member may be a flexible strip extending vertically, or other structures may be adopted, but preferably, the flexible member is a hair bundle formed by a plurality of vertically arranged flexible implanted hairs.

[0034] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is: a cleaning machine, including a body and a cleaning structure, the body having a bottom opening for providing an installation space for the cleaning structure to be installed therein, characterized in that the cleaning structure is the cleaning structure described above, and the bottom opening is located outside the bottom circumference of the shell.

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

[0036] The technical solution adopted by the present invention to solve the fourth technical problem mentioned above is: a cleaning machine, including a body and a cleaning structure, the body having an installation space with an open bottom for the cleaning structure to be installed therein, characterized in that the cleaning structure is the cleaning structure described above, and the bottom of the body is provided with a flexible part for contacting the floor to be cleaned, the flexible part is arranged in front of the sewage suction port, and is arranged relative to the area between two adjacent accommodating grooves.

[0037] The flexible member may be a flexible strip extending vertically, or other structures may be adopted, but preferably, the flexible member is a hair bundle formed by a plurality of flexible implanted hairs.

[0038] Compared with the prior art, the advantages of the present invention are: in the cleaning structure, the outer periphery of one of the left and right sides of the brush member of the roller shaft has a accommodating groove extending along the circumference of the roller shaft for accommodating hair, and there are slide grooves at the positions corresponding to the accommodating grooves, the movable knife has a cutting part that penetrates into the corresponding slide groove, and the movable knife is arranged to be able to move along the corresponding slide groove, then the cutting part cuts the hair in the corresponding accommodating groove, that is, the hair wrapped around at least one end of the roller shaft is cut, avoiding the end of the roller shaft from affecting the rotation of the roller shaft due to the entangled hair, and at the same time reducing the tediousness brought by manual hair cutting, which can better meet the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a partial structural schematic diagram of the sweeping machine of this embodiment 1;

[0040] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

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

[0042] Figure 4 A cross-sectional view of the cleaning structure at another angle in the figure;

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

[0044] Figure 6 for Figure 1 The enlarged structural diagram of the middle part I;

[0045] Figure 7 for Figure 1 The enlarged structural diagram of the middle part II;

[0046] Figure 8 for Figure 1 A schematic diagram of a portion of the cleaning structure;

[0047] Fig. 9 for Figure 8 Schematic diagram of some structures;

[0048] Fig.10 This is a partial structural diagram of the sweeping machine of this embodiment 2. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below with reference to the accompanying drawings.

[0050] Embodiment 1:

[0051] like Figures 1 to 9 The first preferred embodiment of the present invention is shown in FIG. 1. The cleaning machine in this embodiment is a sweeping robot, and the moving direction of the sweeping robot is the front.

[0052] like Figure 1 As shown, the above-mentioned sweeping machine includes a body 8 and a cleaning structure, and the body 8 has a bottom opening 811 for providing an installation space for the cleaning structure to be installed therein.

[0053] 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 member, a fixed blade 6 and a flexible member 7. The housing 1 has a chamber 10 extending in the left-right direction, the bottom of the housing 1 has a sewage suction port 101 extending in the left-right direction and connected to the chamber 10, and the housing 1 has an air outlet 102 connected to the chamber 10. Along the fluid flow path, the air outlet 102 is located downstream of the sewage suction port 101. The bottom opening 811 of the above-mentioned installation space is located at the periphery of the bottom periphery of the housing 1.

[0054] The roller brush 2 is used to sweep the surface to be cleaned. The roller brush 2 includes a roller shaft 21 rotatably arranged in the chamber 10 and a brush member 2a arranged on the outer peripheral wall of the roller shaft 21. The roller shaft 21 extends in the left-right direction. The brush member 2a includes a first brush strip 221 and a second brush strip 231 which are sequentially arranged along the axial direction of the roller shaft 21 and are both arranged in a spiral shape. The first brush strip 221 and the second brush strip 231 have opposite rotation directions, and a gap 24 is left between the two. Specifically, the brush member 2a includes a first roller brush sleeve 22 and a second roller brush sleeve 23 which are sleeved on the periphery of 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 a gap 24. The first roller brush sleeve 22 and the second roller brush sleeve 23 both extend along the length direction of the roller shaft 21, and both are provided with an avoidance groove 01 connected to the slide groove 212 at the position corresponding to the slide groove 212. The first brush strip 221 is arranged on the outer peripheral wall of the first roller brush sleeve 22, and the second brush strip 231 is arranged on the outer peripheral wall of the second roller brush sleeve 23, and both of them and the first brush strip 221 are partially located below the sewage suction port 101.

[0055] The roller 21 has a receiving groove 211 for receiving hair on the outer circumference of the left and right sides of the brush member 2a and at the position corresponding to the gap 24, and there are three receiving grooves 211. The receiving groove 211 extends along the circumference of the roller 21. The roller 21 is hollow inside to form a cavity 210, and the roller 21 is provided with a slide groove 212 connecting the receiving groove 211 and the cavity 210 at the position corresponding to the receiving groove 211, and the slide groove 212 extends along the length direction of the roller 21. The receiving groove 211 is connected to the corresponding slide groove 212 at a position near the center.

[0056] The air outlet 102 is located behind the roller 21 and is arranged opposite to the gap 24. In addition, in order to make the hair reliably gather in the receiving groove, the peripheral wall of the chamber 10 has a pressing plate 12 extending toward the gap 24 at a position corresponding to the gap 24. The pressing plate 12 is located above the air outlet 102 and is partially located in the gap 24. The existence of the pressing plate presses the hair into the receiving groove, and finally makes the hair gather in the receiving groove.

[0057] In the cavity 210, at the position corresponding to the receiving groove 211, there is a movable knife 3 arranged to move along the length direction of the slide groove 212. The movable knife 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 side cutting portion. Each receiving groove 211 corresponds to a slide groove 212 and a movable knife 3. The movable knife 3 is constrained on the roller shaft 21, and the movement directions of the movable knives 3 are the same. Specifically, two adjacent movable knives 3 are connected by a connecting rod 4, and are both rotatably connected to the corresponding ends of the connecting rod 4, and move along the slide groove 212 under the transmission drive of the transmission assembly 5.

[0058] A fixed shaft 11 arranged coaxially with the roller shaft 21 is relatively fixed on one of the end walls at 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 knife 3 along the axial direction of the roller shaft 21. The aforementioned transmission assembly 5 is arranged in the cavity 210 and connects the housing 1 and the connecting rod 4, so that the movable knife 3 is driven to move by driving the connecting rod 4. In this embodiment, the two accommodating grooves 211 away from the transmission assembly 5 are both first accommodating grooves opened on the outer peripheral wall of the roller shaft 21, and the accommodating groove adjacent to the transmission assembly is the second accommodating groove. The roller shaft 21 is sleeved with a sleeve 25 at the position corresponding to the transmission assembly 5. In this embodiment, the sleeve 25 is partially located on the periphery of the fixed shaft 11, and the sleeve 25 is spaced apart from the brush member 2a along the axial direction of the roller shaft 21, and a second accommodating groove is formed with a gap between the sleeve 25 and the brush member 2a on the corresponding side. The transmission assembly 5 includes an adapter 51, a transmission rod 52 and a swinging member 53. The adapter seat 51 is arranged on the free end of the fixed shaft 11, and an eccentric shaft 511 extending toward the movable knife 3 is eccentrically arranged on the end surface facing the movable knife 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 through the connecting shaft 532. The swing member 53 is rotatably arranged on the roller shaft 21 through the installation shaft 531, and the swing member 53 is provided with a limiting groove 533 for the eccentric shaft 511 to be slidably constrained therein on the side facing the adapter seat 51, and when the roller shaft 21 is in a rotating state relative to the fixed shaft 11, the swing member 53 is in a swinging state. The above-mentioned installation shaft 531 and the connecting shaft 532 are arranged side by side and spaced apart. In this embodiment, the limiting groove 533 extends along the length direction of the connecting shaft 532, and the two opposite side walls of the limiting groove 533 are inclined walls 5331 that gradually incline toward each other in the direction away from the movable knife 3.

[0059] Each movable knife 3 corresponds to a fixed knife 6 arranged side by side with the movable knife 3, and the movable knife 3 and the fixed knife 6 are arranged along the length direction of the connecting shaft 532. The cutting part is a cutting tooth 31, and the fixed knife 6 is located in the cavity 210 and has a cutting groove 61 that penetrates into the accommodating groove 211. The cutting teeth 31 and the cutting groove 61 cooperate to form a cutting group. Specifically, the movable knife 3 and the fixed knife 6 are both plate-shaped, and the two opposite first side edges of the movable knife 3 have a plurality of cutting teeth 31, and each first side edge corresponds to a slide groove 212, and there are two slide grooves 212, which are arranged oppositely. The opposite side edges of the fixed knife 6 have cutting grooves 61.

[0060] The fixed knife 6 is provided with a guide groove 62 extending along the length direction of the roller shaft 21, and the movable knife 3 is provided with a guide member 321 that cooperates with the guide groove 62. Specifically, the movable knife 3 is provided with a mounting plate 32, and the movable knife 3 is located between the mounting plate 32 and the fixed knife 6, the guide member 321 is arranged on the mounting plate 32, and the movable knife 3 is provided with a through hole for the guide member 321 to pass through. In order to achieve a better cutting effect, the elastic member acts on the movable knife 3, and the movable knife 3 always has a tendency to move toward the corresponding fixed knife 6 to be close to the fixed knife 6. In this embodiment, the elastic member is a spring 9 located between the mounting plate and the roller shaft.

[0061] In order to allow the hair to enter in different areas, a flexible member 7 for contacting the floor to be cleaned is provided at the bottom of the housing 1. The flexible member 7 is formed of a plurality of vertically extending flexible hair bundles. The flexible member 7 is arranged in front of the sewage suction port 101 and is arranged relative to the area between two adjacent accommodating grooves 211, so there are two groups of flexible members 7. The spacing between the flexible member 7 on the left and the left edge of the brush member 2a is L1, and the spacing between the flexible member 7 on the right and the right edge of the brush member 2a is L2. The spacings L1 and L2 are both dimensions along the axial direction of the roller shaft, and are both 5 to 20 mm. In this embodiment, the left edge of the first roller brush cover 22 is the left edge of the brush member 2a, and the right edge of the second roller brush cover 23 is the right edge of the brush member 2a.

[0062] The existence of the flexible member 7 divides the front side of the suction port 101 of the housing into three areas, each of which corresponds to a set of movable blades 3 and fixed blades 6. In this embodiment, the flexible member 7 is located on the circle A where the turning radius R of the sweeping robot is located. In this way, when the sweeping robot moves forward and turns, it can absorb more hair and reduce the blind area of ​​hair picking.

[0063] When the sweeping robot is moving, under the blocking effect of the flexible member 7, part of the hair enters the left area located on the left side of the left flexible member 7, another part of the hair enters the right area located on the right side of the right flexible member, and another part of the hair enters the middle area between the two groups of flexible members 7, and is then cut by the movable cutting members corresponding to the corresponding areas, thus achieving partitioned cutting and effectively balancing the cutting pressure of the three groups (movable knives and fixed knives). In the above embodiment, the turning radius of the sweeping robot is the rotation radius of the sweeping robot when turning. In the above claims and embodiments, contact also includes interference with the ground.

[0064] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "left", "right", "side", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as illustrations and should not be regarded as limitations.

[0065] Embodiment 2:

[0066] like Fig.10 Shown is the second preferred embodiment of the present invention.

[0067] The difference between this embodiment and the above-mentioned embodiment 1 is that the flexible member 7 is arranged at a different position. Specifically, the flexible member 7 is arranged at the bottom of the body 8 to contact the floor to be cleaned. The flexible member 7 is arranged in front of the suction port 101 and is arranged opposite to the area between two adjacent accommodating grooves 211.

Claims

1. A cleaning structure for a cleaning machine, with the traveling direction of the cleaning machine as the front, comprising: A shell (1) having a chamber (10) extending in the left-right direction, the bottom of the chamber (10) having a sewage suction port (101) extending in the length direction thereof, and the chamber (10) also having an air outlet (102); A roller brush (2) is used to sweep the surface to be cleaned, comprising a roller shaft (21) rotatably arranged in the chamber (10) and a brush member (2a) arranged on the outer peripheral wall of the roller shaft (21), wherein the brush member (2a) is partially located below the dirt suction port (101); It is characterized in that The roller shaft (21) has a receiving groove (211) extending along the circumference of the roller shaft (21) for receiving hair on the outer periphery of at least one of the left and right sides of the brush member (2a); the roller shaft (21) is hollow inside to form a cavity (210); and the roller shaft (21) is provided with a slide groove (212) connecting the receiving groove (211) and the cavity (210) at a position corresponding to the receiving groove (211); the slide groove (212) extends along the length direction of the roller shaft (21); and a movable knife (3) arranged to be movable along the length direction of the slide groove (212) is provided in the cavity (210) at a position corresponding to the receiving groove (211); the movable knife (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 cutting portion.

2. The cleaning structure according to claim 1, characterized in that: The roller shaft (21) is provided with the accommodation groove (211), the sliding groove (212) and the movable knife (3) on the outer periphery of the left and right sides of the brush member (2a).

3. The cleaning structure according to claim 1, characterized in that: The movable knife (3) corresponds to a fixed knife (6) arranged side by side with the movable knife (3); the cutting portion is a cutting tooth (31); the fixed knife (6) is located in the cavity (210) and has a cutting groove (61) penetrating into the accommodating 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 member which enables the movable knife (3) to always have a tendency to move towards the corresponding fixed knife (6) so as to be close to the fixed knife (6), and the elastic member acts on the movable knife (3).

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

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

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

8. The cleaning structure according to claim 1, characterized in that: The accommodating groove (211) is communicated with a corresponding sliding groove (212) at a position near the center.

9. The cleaning structure according to any one of claims 1 to 8, characterized in that: The brush member (2a) comprises a first brush strip (221) and a second brush strip (231) which are sequentially arranged along the axial direction of the roller shaft (21) and are both arranged in a spiral shape. The first brush strip (221) and the second brush strip (231) have opposite rotation directions and a gap (24) is left between them. The roller shaft (21) has the accommodation groove (211), the sliding groove (212) and the movable knife (3) at the position of the gap (24).

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

11. The cleaning structure according to claim 10, characterized in that: The movable knife (3) is constrained on the roller shaft (21), and two adjacent movable knives (3) are connected by a connecting rod (4), and are both rotatably connected to the corresponding ends of the connecting rod (4). It also includes a transmission component (5) for driving the connecting rod (4) to move along the left and right directions and then driving the movable knife (3) to move. The transmission component (5) is arranged in the cavity (210) and connects the shell (1) and the connecting rod (4).

12. The cleaning structure according to claim 11, characterized in that: The accommodating groove (211) away from the transmission component (5) is a first accommodating groove provided on the outer peripheral wall of the roller shaft (21), and the accommodating groove adjacent to the transmission component is a second accommodating groove. The roller shaft (21) is provided with a shaft sleeve (25) at a position corresponding to the transmission component (5). The shaft sleeve (25) and the brush member (2a) are arranged at intervals along the axial direction of the roller shaft (21), and a gap is left between the shaft sleeve (25) and the brush member (2a) on the corresponding side to form the second accommodating groove.

13. The cleaning structure according to claim 11, characterized in that: A fixed shaft (11) coaxially arranged with the roller shaft (21) is relatively fixed on one of the left and right end walls 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 knife (3) along the axial direction of the roller shaft (21). The transmission assembly (5) comprises: An adapter seat (51) is arranged on the free end of the fixed shaft (11), and an eccentric shaft (511) extending in the direction of the movable knife (3) is eccentrically arranged on the end surface facing the movable knife (3); A transmission rod (52), a first end of which is rotatably connected to the connecting rod (4); A swing member (53) is rotatably arranged 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 the mounting shaft (531) and spaced apart from the mounting shaft (531); a limiting groove (533) for the eccentric shaft (511) to be slidably restrained therein is provided on one side of the swing member (53) facing the adapter seat (51); and when the roller shaft (21) is in a rotating state 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 two opposite side walls of the limiting groove (533) are inclined walls (5331) that gradually incline toward each other in a direction away from the movable knife (3).

15. The cleaning structure according to claim 9, characterized in that: The air outlet (102) is located behind the roller shaft (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 in the direction of 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 in the gap (24).

17. The cleaning structure according to claim 9, characterized in that: The brush member (2a) comprises a first roller brush sleeve (22) and a second roller brush sleeve (23) which are sleeved on the periphery of 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); the first roller brush sleeve (22) and the second roller brush sleeve (23) both extend along the length direction of the roller shaft (21), and both are provided with an avoidance groove (01) connected to the slide groove (212) at the position corresponding to the slide groove (212); the first brush strip (221) is arranged on the outer peripheral wall of the first roller brush sleeve (22); the second brush strip (231) is arranged on the outer peripheral wall of the second roller brush sleeve (23), and both the first brush strip (221) and the second brush strip (231) are partially located below the sewage 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 floor to be cleaned; the flexible member (7) is arranged in front of the sewage suction port (101) and is arranged opposite to the area between two adjacent accommodating grooves (211).

19. The cleaning structure according to claim 18, characterized in that: The flexible member (7) is a bundle of hairs formed by a plurality of vertically arranged flexible implanted hairs.

20. A cleaning machine, comprising a body (8) and a cleaning structure, wherein the body (8) has an installation space with a bottom opening (811) for installing the cleaning structure therein, characterized in that: The cleaning structure is a cleaning structure as claimed in any one of claims 1 to 19, and the bottom opening (811) is located at the periphery of the bottom circumference of the shell (1).

21. The cleaning machine according to claim 20, characterized in that: The cleaning machine is a sweeping robot.

22. A cleaning machine, comprising a body (8) and a cleaning structure, wherein the body (8) has an installation space with an open bottom (811) for installing the cleaning structure therein, characterized in that: The cleaning structure is a cleaning structure as described in any one of claims 9 to 17, and a flexible member (7) for contacting the floor to be cleaned is provided at the bottom of the body (8), and the flexible member (7) is provided in front of the sewage suction port (101) and is arranged relative to the area between two adjacent accommodating grooves (211).

23. The cleaning machine according to claim 22, characterized in that: The flexible member (7) is a bundle of hairs formed by a plurality of vertically arranged flexible implanted hairs.

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