Cleaning structure and cleaning machine for use in cleaning machines

Abstract

This invention relates to a cleaning structure for a cleaning machine and the cleaning machine itself. The cleaning structure includes a roller and a cutting element, a first ratchet structure disposed between a drive shaft and a first driven shaft, and a second ratchet structure disposed between a linkage shaft and a second driven shaft. When the drive shaft is rotating clockwise or counterclockwise, the first and second driven shafts rotate around their own axes, driving the roller to rotate synchronously. When the drive shaft is rotating in the opposite direction, the first driven shaft moves in the first direction and disengages from the drive shaft, and the second driven shaft moves in the first direction and disengages from the linkage shaft, thereby driving the cutting element to move along a groove towards a receiving groove. When the drive shaft rotates clockwise, the first and second brush strips clean the floor; when the drive shaft rotates in the opposite direction, the roller does not rotate counterclockwise with the drive shaft, and the second driven shaft moves with the cutting element to cut the hair entangled in the receiving groove.

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.

[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 collects and automatically cleans up hair, in light 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 for automatically collecting hair.

[0007] The third technical problem to be solved by the present invention is to provide a cleaning machine in which the cleaning structure can float up and down during the movement of the cleaning machine, thereby shaking off the cut hair.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a cleaning structure for a cleaning machine, including a roller shaft, on the outer peripheral wall of the roller shaft, a first brush strip and a second brush strip are arranged in a spiral shape along the axial direction of the roller shaft, and the first brush strip and the second brush strip have opposite directions of rotation;

[0009] The roller shaft is characterized by having a hollow interior cavity; a gap exists between the first brush strip and the second brush strip; a receiving groove extending circumferentially along the roller shaft to accommodate hair is formed on the outer peripheral wall corresponding to the gap; and a sliding groove extending along the length of the roller shaft and communicating with the receiving groove and the cavity is formed at the position corresponding to the receiving groove; it also includes:

[0010] A cutting element, at least partially disposed within the groove;

[0011] A linkage assembly, at least partially disposed in the cavity of the roller shaft and coaxially arranged with the roller shaft, includes a drive shaft, a first driven shaft, and a second driven shaft fixed relative to the cutting element, arranged sequentially along the axial direction of the roller shaft. The direction in which the drive shaft and the second driven shaft are arranged sequentially is denoted as a first direction. The drive shaft is arranged to be rotatable relative to the roller shaft about its own axis, and a first end face of the drive shaft is adjacent to the second driven shaft. An extension rod extending along the first direction is disposed near the center of the first end face. The first driven shaft is sleeved around the extension rod.

[0012] A first ratchet structure is disposed between the drive shaft and the first driven shaft to selectively engage the first driven shaft with the drive shaft;

[0013] A second ratchet structure is disposed between the extension rod and the second driven shaft, which is used to selectively link the second driven shaft with the free end of the extension rod. When the drive shaft is in a clockwise or counterclockwise forward rotation state, the first driven shaft and the second driven shaft rotate around their own axes respectively, and drive the roller shaft to rotate synchronously. When the drive shaft is in a reverse rotation state, the first driven shaft moves in a first direction and disengages from the drive shaft, and the second driven shaft moves in the first direction and disengages from the extension rod, thereby driving the cutting piece to move along the slide groove towards the receiving groove.

[0014] The first driven shaft is arranged to move relative to the roller shaft only along the axial direction of the roller shaft.

[0015] Preferably, the free end of the extension rod is provided with a linkage shaft that is linked to the extension rod, and the second ratchet structure is located between the linkage shaft and the second driven shaft. In order to enable the second driven shaft to automatically return to its original linkage state, the opposite direction of the first direction is denoted as the second direction. The cleaning structure further includes a first elastic member that ensures the second driven shaft always has a tendency to move in the second direction and thus be linked with the linkage shaft. The first elastic member acts on the second driven shaft.

[0016] The first elastic element can take various structural forms, such as a spring or a leaf spring. However, preferably, a fixed shaft is provided in the cavity of the roller shaft, and the fixed shaft is located on the side of the second driven shaft away from the linkage shaft. The first elastic element is a first spring located between the fixed shaft and the second driven shaft.

[0017] In order to automatically restore the first driven shaft to its original linkage state, a second elastic element is included to ensure that the first driven shaft always has a tendency to move in the second direction and thus be in linkage with the driving shaft. The second elastic element acts on the first driven shaft.

[0018] The second elastic element can take various structural forms, such as a spring or a leaf spring. However, preferably, the circumferential wall of the cavity of the roller shaft extends inward to form an annular flange extending circumferentially along the roller shaft. The annular flange is located between the linkage shaft and the first driven shaft, and the second elastic element is a second spring located between the annular flange and the first driven shaft.

[0019] For cutting efficiency, the second driven shaft is provided with at least two cutting elements arranged circumferentially along the roller shaft, each cutting element corresponding to one of the grooves.

[0020] The linkage shaft can be fixed to the free end of the extension rod, or it can be directly formed on the free end of the extension rod. However, preferably, the linkage shaft is fixed to the free end of the extension rod.

[0021] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: it further includes a housing, with the direction of travel of the cleaning machine as the front, the interior of the housing has a chamber extending in the left and right direction, and the housing has an air outlet connected to the chamber, the bottom of the chamber has a suction port, the roller extends in the left and right direction and is rotatably disposed in the chamber, and the first brush strip and the second brush strip are partially located below the suction port.

[0022] 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 receiving groove.

[0023] 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, it also 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 a clearance groove connected to the corresponding groove at the position of the groove. 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.

[0024] In order to achieve the rotation of the drive shaft, the end of the drive shaft away from the linkage shaft is provided with a shaft hole into which the output shaft of the power source is inserted.

[0025] There are various structural forms of the cutting element, but preferably, the cutting element is a cutting blade located outside the second driven shaft. The cutting blade has a V-shaped cutting edge at the end opposite to the linkage shaft, and the receiving groove is located on the movement path of the open V-shaped cutting edge. The cutting blade is mounted on the second driven shaft. Alternatively, a C-shaped cutting edge can also be used.

[0026] To facilitate the mounting of the cutting blade, the cutting blade has an inwardly extending insertion portion, and the second driven shaft has a mounting port for inserting the insertion portion. Alternatively, the mounting port can be provided on the cutting blade, while an extension portion is provided on the second driven shaft.

[0027] In order for the roller to rotate synchronously in the forward direction when the first driven shaft and the second driven shaft rotate in the forward direction, the outer peripheral walls of the first driven shaft and the second driven shaft are matched with the inner peripheral wall of the roller, and the cross-sections of the three are non-circular.

[0028] Preferably, the end face of the first driven shaft facing the drive shaft is the second end face. The extension rod is disposed near the center of the first end face of the drive shaft and is coaxially arranged with the drive shaft. The first ratchet structure includes a first ratchet tooth disposed on the first end face of the drive shaft and a second ratchet tooth disposed on the second end face of the first driven shaft. The first ratchet tooth is located on the periphery of the extension rod, and there are at least two of both the first and second ratchet teeth arranged sequentially along the circumference of the roller shaft. When the drive shaft is rotating in the forward direction, the first ratchet tooth and the second ratchet tooth are engaged. When the drive shaft is rotating in the reverse direction, the first ratchet tooth disengages from the second ratchet tooth.

[0029] Preferably, the second ratchet structure includes a third ratchet and a fourth ratchet. The third ratchet is formed on the end face of the second driven shaft facing the drive shaft, and the fourth ratchet is formed on the end face of the drive shaft facing the second driven shaft. There are at least two third and fourth ratchets, which are arranged sequentially along the circumference of the roller shaft. When the drive shaft is rotating in the forward direction, the third ratchet and the fourth ratchet are engaged. When the drive shaft is rotating in the reverse direction, the third ratchet is disengaged from the fourth ratchet.

[0030] Preferably, the two sides of the first and fourth ratchet teeth sequentially connected along the positive rotation direction of the drive shaft are respectively a first side and a second side. The second side is a first straight surface extending along the axial direction of the drive shaft, and the first side is a first inclined surface gradually tilting towards a first direction A along the positive rotation direction of the drive shaft. The two sides of the second and third ratchet teeth sequentially connected along the positive rotation direction of the drive shaft are respectively a third side and a fourth side. The fourth side is a second inclined surface matching the first inclined surface on the corresponding side, and the third side is a second straight surface matching the first straight surface on the corresponding side. Furthermore, the third and fourth ratchet teeth can also be in the form of protrusions. When the drive shaft is rotating in the positive direction, the protrusions abut against the first straight surface; when the drive shaft is rotating in the reverse direction, the protrusions abut against the first inclined surface.

[0031] The technical solution adopted by the present invention to solve the third technical problem mentioned above is: a cleaning machine, comprising a body and a cleaning structure, characterized in that: the cleaning structure is the cleaning structure described above, the first side of the front and rear sides of the cleaning structure is rotatably connected to the body through an installation shaft extending in the left and right direction, and the second side of the front and rear sides of the cleaning structure is arranged to be able to move up and down relative to the body and constrained on the body.

[0032] In order to limit the vertical movement of the cleaning structure, a limiting member is provided on the body above the bottom wall plate of the body. A portion of the second side of the cleaning structure is located between the limiting member and the bottom wall plate of the body, and moves vertically between the two.

[0033] To prevent the cleaning structure from affecting the exhaust during its up-and-down swinging motion, the machine body is equipped with a separation module for separating at least dust and air. The air outlet of the cleaning structure is connected to the air inlet of the separation module through a flexible tube that can deform.

[0034] The cleaning machine can be a sweeper, a vacuum cleaner, or a handheld floor scrubber, but preferably, the cleaning machine is a sweeper.

[0035] Compared with the prior art, the advantages of the present invention are as follows: In this cleaning structure, the first driven shaft is selectively linked to the drive shaft through the first ratchet structure, and the second driven shaft is selectively linked to the drive shaft through the second ratchet structure. When the drive shaft rotates in the forward direction, the first and second driven shafts rotate synchronously in the forward direction, driving the roller shaft to rotate synchronously. At this time, the first and second brush strips clean the ground. During the reverse rotation of the drive shaft, both the first and second driven shafts move along the first direction. At this time, the roller shaft does not rotate in the reverse direction with the drive shaft, and the first and second brush strips do not clean the ground. The second driven shaft carries the cutting element towards the receiving groove to cut the hair wrapped in the receiving groove. At this time, the cut hair does not become entangled again, reducing the tediousness of manually cutting hair and better meeting the needs of users. Attached Figure Description

[0036] Figure 1 This is a partial structural diagram of the sweeper in this embodiment;

[0037] Figure 2 for Figure 1 A schematic diagram of the cleaning structure in the diagram;

[0038] Figure 3 for Figure 2 A sectional view;

[0039] Figure 4 for Figure 2 A cross-sectional view from another angle;

[0040] Figure 5 for Figure 2 Partial structural diagram;

[0041] Figure 6 for Figure 5 A three-dimensional exploded view of the middle section;

[0042] Figure 7 for Figure 6 A partial structural diagram. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] like Figures 1 to 7 As shown, the cleaning machine in this embodiment is a sweeper, and the following description refers to the sweeper's direction of travel as forward. Figure 1As shown, the aforementioned sweeper includes a body 5, a cleaning structure, and a separation structure for at least separating dust and air. The first side (front side) of the cleaning structure is rotatably connected to the body 5 via a mounting shaft (not shown) extending in the left-right direction. The second side (rear side) of the cleaning structure is arranged to be able to move vertically relative to the body 5 and is constrained by the body 5. To limit the vertical movement of the rear side of the cleaning structure relative to the body 5, a limiting member 51 is provided on the body 5 above the bottom wall plate of the body 5. The rear side of the cleaning structure has a rearwardly extending extension plate 15, which is partially located between the limiting member 51 and the bottom wall plate of the body 5 and moves vertically between them. The separation structure is provided on the body 5, and this separation structure can adopt any structure in the prior art, which will not be described in detail in this embodiment.

[0045] like Figures 2 to 7 As shown, the cleaning structure of this embodiment includes a housing 1, a roller brush 2, a linkage assembly 4, a first ratchet structure, a second ratchet structure, a first elastic element, and a second elastic element. The housing 1 has a chamber 10 extending in a left-right direction, and the housing 1 has an air outlet 102 communicating with the chamber 10. The bottom of the chamber 10 has a suction port 101. The roller brush 2 includes a roller shaft 21, a first roller brush sleeve 22, and a second roller brush sleeve 23. The roller shaft 21 extends in a left-right direction and is rotatably disposed within the aforementioned chamber 10. In this embodiment, the air outlet 102 of the cleaning structure is connected to the air inlet of the separation structure via a deformable flexible tube. The presence of the flexible tube ensures effective ventilation when the cleaning structure floats up and down.

[0046] like Figures 2 to 4As shown, the roller 21 has a hollow cavity 210 inside. On the outer peripheral wall of the roller 21, a first brush strip 221 and a second brush strip 231 are arranged in a spiral pattern along the axial direction of the roller 21, with the first brush strip 221 and the second brush strip 231 spiraling in opposite directions. The first brush strip 221 and the second brush strip 231 are partially located below the suction port 101. In this embodiment, the first roller brush sleeve 22 and the second roller brush sleeve 23 are both sleeved on the periphery of the roller 21 and extend along the length direction of the roller 21. Specifically, the aforementioned first roller brush sleeve 22 and the second roller brush sleeve 23 are arranged at intervals along the axial direction of the roller 21, and the interval between them is the gap 24. The roller 21 has a receiving groove 211 extending circumferentially along the roller 21 to receive hair on the outer peripheral wall corresponding to the gap 24, and a sliding groove 212 connecting the receiving groove 211 and the cavity 210 is provided at the position corresponding to the receiving groove 211. The air outlet 102 is located behind the roller 21 and is arranged opposite to the receiving groove 211. The sliding groove 212 extends along the length of the roller 21, and there are at least two sliding grooves 212, spaced apart circumferentially along the roller 21. In this embodiment, there are two sliding grooves 212. The receiving groove 211 is connected to the sliding groove 212 near its center. The first brush sleeve 22 and the second brush sleeve 23 have clearance grooves 01 at corresponding positions of the sliding grooves, communicating with the sliding grooves 212. The first brush strip 221 is disposed on the outer peripheral wall of the first brush sleeve 22, and the second brush strip 231 is disposed on the outer peripheral wall of the second brush sleeve 23.

[0047] like Figure 3 and Figure 4 As shown, each groove 212 corresponds to a cutting element, which is partially located within the groove 212. Figure 3 As shown, the aforementioned linkage assembly 4 is partially disposed in the cavity 210 of the roller shaft 21 and is arranged coaxially with the roller shaft 21. The aforementioned linkage assembly 4 includes a drive shaft 41, a first driven shaft 42, a linkage shaft 43 that is linked with the drive shaft 41, and a second driven shaft 44 that is fixed relative to the cutting element, arranged sequentially along the axial direction of the roller shaft 21. At least two cutting elements are arranged circumferentially along the roller shaft 21 on the second driven shaft 44. In this embodiment, there are two cutting elements, and the two cutting elements have the same structure. The following description uses one of the cutting elements as an example. The cutting element is a cutting blade 3 located outside the second driven shaft 44. The cutting blade 3 has a V-shaped cutting edge 31 at the end opposite to the linkage shaft 43. The receiving groove 211 is located on the movement path of the opening 311 of the V-shaped cutting edge 31. The cutting blade 3 is mounted on the second driven shaft 44. In order to install the cutting blade 3, the cutting blade 3 has an inwardly extending insertion portion 32, and the second driven shaft 44 has an installation port 440 for inserting the insertion portion 32 into it.

[0048] The aforementioned drive shaft 41 is arranged to rotate relative to the roller shaft 21 around its own axis under the drive of the power source. Specifically, the end of the drive shaft 41 away from the linkage shaft 43 has a shaft hole 410 for the output shaft of the power source to be inserted. The aforementioned power source adopts a structure in the prior art, which will not be described in detail in this embodiment. In addition, the first end face of the drive shaft 41 is adjacent to the second driven shaft 44, and an extension rod 411 extending along the first direction A is provided near the center of the first end face. The extension rod 411 is coaxially arranged with the drive shaft 41. The first driven shaft 42 is sleeved around the extension rod 411. Figure 6 As shown, the direction in which the driving shaft 41 and the second driven shaft 44 are arranged sequentially is called the first direction A, the opposite direction of the first direction A is called the second direction B, and the end face of the first driven shaft 42 facing the driving shaft 41 is called the second end face.

[0049] like Figure 4 As shown, the outer peripheral wall of the second driven shaft 44 matches the inner peripheral wall of the roller shaft 21, and both have non-circular cross-sections. Additionally, the outer peripheral wall of the first driven shaft 42 also matches the inner peripheral wall of the roller shaft 21. In this embodiment, all three are polygonal, specifically hexagonal. Thus, during the rotation of the second driven shaft 44, the roller shaft 21 rotates together with the second driven shaft 44.

[0050] like Figure 6 and Figure 7 As shown, the first ratchet structure is disposed between the drive shaft 41 and the first driven shaft 42. It is used to drive the first driven shaft 42 to rotate around its own axis when the drive shaft 41 is rotating clockwise or counterclockwise, and to cause the first driven shaft 42 to move in the first direction A and disengage from the drive shaft 41 when the drive shaft 41 is rotating in the opposite direction. In this embodiment, the first ratchet structure includes a first ratchet 412 disposed on the first end face of the drive shaft 41 and a second ratchet 421 disposed on the second end face of the first driven shaft 42. The first ratchet 412 is located on the periphery of the extension rod 411, and there are at least two of each of the first and second ratchet 421 arranged sequentially along the circumference of the roller shaft 21. When the drive shaft 41 is rotating in the forward direction, the first ratchet 412 engages with the second ratchet 421; when the drive shaft 41 is rotating in the reverse direction, the first ratchet 412 disengages from the second ratchet 421. In this embodiment, as shown... Figure 6 As shown, the forward rotation direction of the drive shaft 41 is C, and the reverse rotation direction of the drive shaft 41 is D.

[0051] The linkage shaft 43 is fixed relative to the free end of the extension rod 411. The aforementioned second ratchet structure is disposed between the linkage shaft 43 and the second driven shaft 44. It is used to drive the second driven shaft 44 to rotate around its own axis when the linkage shaft 43 is rotating in the forward direction with the drive shaft 41, and to cause the second driven shaft 44 to move in the first direction A and disengage from the linkage with the linkage shaft 43 when the linkage shaft 43 is rotating in the reverse direction with the drive shaft 41, thereby driving the cutting part to move along the slide groove 212 towards the receiving groove 211. Specifically, the second ratchet structure includes a third ratchet 441 and a fourth ratchet 431. The third ratchet 441 is formed on the end face of the second driven shaft 44 facing the drive shaft 43, and the fourth ratchet 431 is formed on the end face of the drive shaft 43 facing the second driven shaft 44. There are at least two third ratchet 441 and four ratchet 431, and they are arranged sequentially along the circumference of the roller shaft 21. When the drive shaft 41 is rotating in the forward direction, the third ratchet 441 and the fourth ratchet 431 are engaged. When the drive shaft 41 is rotating in the reverse direction, the third ratchet 441 disengages from the fourth ratchet 431.

[0052] like Figure 6 and Figure 7 As shown, the two sides of the first ratchet 412 and the fourth ratchet 431 connected sequentially along the positive rotation direction C of the drive shaft 41 are respectively the first side and the second side. The second side is a first straight surface 71 extending along the axial direction of the drive shaft 41, and the first side is a first inclined surface 72 that gradually slopes towards the first direction A along the positive rotation direction of the drive shaft 41. The two sides of the second ratchet 421 and the third ratchet 441 connected sequentially along the positive rotation direction of the drive shaft 41 are respectively the third side and the fourth side. The fourth side is a second inclined surface 73 that matches the first inclined surface 72 on the corresponding side, and the third side is a second straight surface 74 that matches the first straight surface 71 on the corresponding side.

[0053] like Figure 3 and Figure 6As shown, the first elastic element acts on the second driven shaft 44, causing the second driven shaft 44 to always have a tendency to move in the second direction B and thus be linked with the linkage shaft 43. Specifically, a fixed shaft 25 is provided in the cavity 210 of the roller shaft 21, which is opposite to the housing 1. The fixed shaft 25 is located on the side of the second driven shaft 44 away from the linkage shaft 43. The first elastic element is a first spring 45 located between the fixed shaft 25 and the second driven shaft 44. The second elastic element acts on the first driven shaft 42, causing the first driven shaft 42 to always have a tendency to move in the second direction B and thus be linked with the drive shaft 41. Specifically, the peripheral wall of the cavity 210 of the roller shaft 21 extends inward to form an annular flange 213 extending circumferentially along the roller shaft 21. The annular flange 213 is located between the linkage shaft 43 and the first driven shaft 42. The second elastic element is a second spring 46 located between the annular flange 213 and the first driven shaft 42.

[0054] The working process of the above cleaning structure is as follows:

[0055] When the roller brush is stationary, the second ratchet 421 on the first driven shaft 42 engages with the first ratchet 412 on the drive shaft 41 under the thrust of the second spring 46. When the drive shaft 41 rotates in the forward direction, the first driven shaft 42 and the roller shaft 21 rotate in the forward direction as well. The third ratchet 441 on the second driven shaft 44 engages with the fourth ratchet 431 on the linkage shaft 43 under the push of the first spring 45. At this time, the second driven shaft 44 also rotates in the forward direction, that is, the entire roller brush is in the forward rotation state, and the first brush bar 221 and the second brush bar 231 clean the ground.

[0056] When the robot vacuum cleaner finishes cleaning the floor and returns to the base station, the hair has been collected in the receiving groove 211 and is wrapped around in the receiving groove 211. The control of the drive shaft 41 to rotate in the opposite direction is activated. Since the first ratchet 412 and the second ratchet 421 disengage, and the third ratchet 441 and the fourth ratchet 431 disengage, at this time, the first driven shaft 42 and the second driven shaft 44 do not rotate in the opposite direction with the drive shaft 41, but move in the first direction A. The cutting blade 3 on the second driven shaft 44 moves towards the receiving groove 211 and cuts the hair wrapped in the receiving groove 211. The first spring 45 causes the cutting blade 3 to move in the second direction B, thereby realizing the repeated cutting of hair.

[0057] The above-mentioned cutting method, in which the roller does not rotate, has a good cutting effect and overcomes the technical problems of not being able to cut all the hair when cutting with the roller rotating, and the hair clumping together and blocking the air outlet during the rotation of the roller.

[0058] 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.

Claims

1. A cleaning structure for a cleaning machine, comprising a roller (21), wherein a first brush strip (221) and a second brush strip (231) are arranged in a spiral pattern along the axial direction of the roller (21) on the outer peripheral wall of the roller (21), wherein the first brush strip (221) and the second brush strip (231) have opposite directions of rotation; Its features are, The roller (21) is hollow inside and has a cavity (210); a gap (24) is left between the first brush strip (221) and the second brush strip (231); the roller (21) has a receiving groove (211) extending circumferentially along the roller (21) to receive hair on the outer peripheral wall corresponding to the gap (24); and a sliding groove (212) extending along the length of the roller and connecting the receiving groove (211) and the cavity (210) is provided at the position corresponding to the receiving groove (211); it also includes: A cutting element, at least partially disposed within the groove (212); The linkage assembly (4) is at least partially disposed in the cavity (210) of the roller (21) and coaxially arranged with the roller (21). It includes a drive shaft (41) arranged sequentially along the axial direction of the roller (21) and a first driven shaft (42) and a second driven shaft (44) arranged to move relative to the roller (21) only along the axial direction of the roller (21). The cutting element is mounted on the second driven shaft (44). The direction in which the drive shaft (41) and the second driven shaft (44) are arranged sequentially is denoted as the first direction (A). The drive shaft (41) is arranged to be able to rotate relative to the roller (21) about its own axis. The first end face of the drive shaft (41) is adjacent to the second driven shaft (44). The first end face is provided with an extension rod (411) extending along the first direction (A). The first driven shaft (42) is sleeved around the extension rod (411). A first ratchet structure is disposed between the drive shaft (41) and the first driven shaft (42) to selectively engage the first driven shaft (42) with the drive shaft (41); A second ratchet structure is disposed between the extension rod (411) and the second driven shaft (44) to selectively engage the second driven shaft (44) with the free end of the extension rod (411). When the drive shaft (41) is in a clockwise or counterclockwise forward rotation state, the first driven shaft (42) and the second driven shaft (44) rotate around their own axes respectively, and drive the roller shaft (21) to rotate synchronously. When the drive shaft (41) is in a reverse rotation state, the first driven shaft (42) moves in the first direction (A) and disengages from the drive shaft (41), and the second driven shaft (44) moves in the first direction (A) and disengages from the extension rod (411), thereby driving the cutting piece to move along the slide groove (212) towards the receiving groove (211).

2. The cleaning structure according to claim 1, characterized in that: The free end of the extension rod (411) is provided with a linkage shaft (43) that is linked to the extension rod (411), and the second ratchet structure is located between the linkage shaft (43) and the second driven shaft (44).

3. The cleaning structure according to claim 2, characterized in that: Let the opposite direction of the first direction (A) be the second direction (B). The cleaning structure also includes a first elastic element that makes the second driven shaft (44) always move in the second direction (B) and thus be in linkage with the linkage shaft (43). The first elastic element acts on the second driven shaft (44).

4. The cleaning structure according to claim 3, characterized in that: A fixed shaft (25) is provided in the cavity (210) of the roller (21). The fixed shaft (25) is located on the side of the second driven shaft (44) away from the linkage shaft (43). The first elastic element is a first spring (45) located between the fixed shaft (25) and the second driven shaft (44).

5. The cleaning structure according to claim 3, characterized in that: It includes a second elastic element that causes the first driven shaft (42) to always move in the second direction (B) and thus be in linkage with the driving shaft (41), the second elastic element acting on the first driven shaft (42).

6. The cleaning structure according to claim 5, characterized in that: The cavity (210) of the roller shaft (21) extends inward to form an annular flange (213) that extends circumferentially along the roller shaft (21). The annular flange (213) is located between the linkage shaft (43) and the first driven shaft (42). The second elastic element is a second spring (46) located between the annular flange (213) and the first driven shaft (42).

7. The cleaning structure according to claim 3, characterized in that: The second driven shaft (44) is provided with at least two cutting elements arranged circumferentially along the roller shaft (21), each cutting element corresponding to a groove (212).

8. The cleaning structure according to claim 2, characterized in that: The linkage shaft (43) is fixed relative to the free end of the extension rod (411).

9. The cleaning structure according to claim 1, characterized in that: It also includes a housing (1) with the direction of travel of the cleaning machine as the front. The interior of the housing (1) has a chamber (10) extending in the left-right direction, and the housing (1) has an air outlet (102) communicating with the chamber (10). The bottom of the chamber (10) has a suction port (101). The roller (21) extends in the left-right direction and is rotatably disposed in the chamber (10). The first brush bar (221) and the second brush bar (231) are partially located below the suction port (101).

10. 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 receiving groove (211).

11. The cleaning structure according to claim 1, characterized in that: It also includes a first brush sleeve (22) and a second 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 first brush sleeve (22) and the second brush sleeve (23). Both the first brush sleeve (22) and the second 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 brush sleeve (22), and the second brush bar (231) is disposed on the outer peripheral wall of the second brush sleeve (23).

12. The cleaning structure according to claim 2, characterized in that: The drive shaft (41) has a shaft hole (410) at one end away from the linkage shaft (43) into which the output shaft of the power source is inserted.

13. The cleaning structure according to claim 2, characterized in that: The cutting element is a cutting blade (3) located outside the second driven shaft (44). The cutting blade (3) has a V-shaped cutting edge (31) at one end away from the linkage shaft (43). The receiving groove (211) is located on the movement path of the opening (311) of the V-shaped cutting edge (31). The cutting blade (3) is mounted on the second driven shaft (44).

14. The cleaning structure according to claim 13, characterized in that: The cutting blade (3) has an inwardly extending insertion portion (32), and the second driven shaft (44) has an installation port (440) for inserting the insertion portion (32).

15. The cleaning structure according to claim 1, characterized in that: The outer peripheral walls of the first driven shaft (42) and the second driven shaft (44) match the inner peripheral wall of the roller (21), and the cross-sections of all three are non-circular.

16. The cleaning structure according to any one of claims 1 to 15, characterized in that: The extension rod (411) is located near the center of the first end face of the drive shaft (41) and is coaxially arranged with the drive shaft (41). The end face of the first driven shaft (42) facing the drive shaft (41) is the second end face. The first ratchet structure includes a first ratchet tooth (412) disposed on the first end face of the drive shaft (41) and a second ratchet tooth (421) disposed on the second end face of the first driven shaft (42). The first ratchet tooth (412) is located on the periphery of the extension rod (411), and there are at least two of each of the first and second ratchet teeth (421) arranged sequentially along the circumference of the roller shaft (21). When the drive shaft (41) is rotating in the forward direction, the first ratchet tooth (412) meshes with the second ratchet tooth (421). When the drive shaft (41) is rotating in the reverse direction, the first ratchet tooth (412) disengages from the second ratchet tooth (421).

17. The cleaning structure according to claim 16, characterized in that: The second ratchet structure includes a third ratchet tooth (441) and a fourth ratchet tooth (431). The third ratchet tooth (441) is formed on the end face of the second driven shaft (44) facing the linkage shaft (43), and the fourth ratchet tooth (431) is formed on the end face of the linkage shaft (43) facing the second driven shaft (44). There are at least two of each of the third ratchet teeth (441) and the fourth ratchet tooth (431), and they are arranged sequentially along the circumference of the roller shaft (21). When the drive shaft (41) is rotating in the forward direction, the third ratchet tooth (441) meshes with the fourth ratchet tooth (431). When the drive shaft (41) is rotating in the reverse direction, the third ratchet tooth (441) disengages from the fourth ratchet tooth (431).

18. The cleaning structure according to claim 17, characterized in that: The first ratchet (412) and the fourth ratchet (431) are connected in sequence along the positive rotation direction of the drive shaft (41) on two sides, which are respectively the first side and the second side. The second side is a first flat surface (71) extending along the axial direction of the drive shaft (41). The first side is a first inclined surface (72) that gradually tilts towards the first direction (A) along the positive rotation direction of the drive shaft (41). The second ratchet (421) and the third ratchet (441) are connected in sequence along the positive rotation direction of the drive shaft (41) on two sides, which are respectively the third side and the fourth side. The fourth side is a second inclined surface (73) that matches the first inclined surface (72) on the corresponding side. The third side is a second flat surface (74) that matches the first flat surface (71) on the corresponding side.

19. A cleaning machine, comprising an organism (5) and a cleaning structure, characterized in that: The cleaning structure is the cleaning structure according to any one of claims 1 to 18. The first side of the front and rear sides of the cleaning structure is rotatably connected to the body (5) by a mounting shaft extending in the left and right direction. The second side of the front and rear sides of the cleaning structure is arranged to be able to move up and down relative to the body (5) and constrained on the body (5).

20. The cleaning machine according to claim 19, characterized in that: The body (5) is provided with a limiting member (51) located above the bottom wall plate of the body (5), and a portion of the second side of the cleaning structure is located between the limiting member (51) and the bottom wall plate of the body (5), and moves up and down between the two.

21. The cleaning machine according to claim 20, characterized in that: The body (5) is provided with a separation module for separating at least dust and air, and the air outlet (102) of the cleaning structure is connected to the air inlet of the separation module through a flexible tube that can deform.

22. The cleaning machine according to claim 19, characterized in that: The cleaning machine mentioned is a floor sweeper.

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