Cleaning mechanism and cleaning equipment

Abstract

The invention relates to a cleaning mechanism and cleaning equipment. The cleaning mechanism comprises a mounting seat; the first cleaning roller and the second cleaning roller can be rotatably mounted on the mounting seat around own axes, and are arranged at an interval in the cleaning direction; the dirt scraping structure is arranged on the mounting seat; the elastic structure is arranged between the mounting seat and the dirt scraping structure in the vertical direction and is used for providing elastic force for keeping the dirt scraping structure in contact with the first cleaning roller and the second cleaning roller; one of the dirt scraping structure and the mounting seat is provided with a guide groove, the other one of the dirt scraping structure and the mounting seat is provided with a guide bulge, one end of the elastic structure is positioned in the guide groove, and the other end of the elastic structure is sleeved on the guide bulge. Thus, water stains on the surface to be cleaned are reduced, the cleaning effect is improved, in the vertical movement process of the dirt scraping structure, the guiding groove and the guiding protrusion start the guiding effect, the dirt scraping structure can not topple over due to the gravity effect of the dirt scraping structure, the movement process is smoother, and the dirt scraping reliability is improved.

Description

Technical Field

[0001] The present application relates to the field of cleaning technology, and in particular to a cleaning mechanism and cleaning equipment. Background Art

[0002] With the development of social economy and the improvement of family living standards, household cleaning equipment has gradually entered the era of intelligence and mechanization. The cleaning robots that have emerged can liberate people from household cleaning work, effectively reduce people’s workload in household cleaning, and alleviate people’s fatigue during household cleaning.

[0003] Some robots in the related art basically realize the functions of sweeping and vacuuming. In order to further meet the function of automatic mopping, a cleaning solution using a roller mop and a scraper for self-cleaning has also emerged. However, after long-term use, the roller mop will increase water stains on the floor to be cleaned, and the cleaning effect will deteriorate. Summary of the invention

[0004] Based on this, it is necessary to provide a cleaning mechanism and a cleaning device to address the problem that after long-term use, the roller mop will increase water stains on the floor to be cleaned and the cleaning effect will deteriorate.

[0005] In one aspect, the present application provides a cleaning mechanism, comprising:

[0006] Mounting seat;

[0007] The first cleaning roller and the second cleaning roller are both rotatably mounted on the mounting seat around their own axes and are spaced apart from each other along the cleaning direction;

[0008] A dirt scraping structure is arranged on the mounting seat;

[0009] and an elastic structure, which is disposed between the mounting seat and the dirt scraping structure in a vertical direction and is used to provide elastic force to keep the dirt scraping structure in contact with the first cleaning roller and the second cleaning roller;

[0010] One of the scraping structure and the mounting seat is provided with a guide groove, and the other is provided with a guide protrusion. One end of the elastic structure is positioned in the guide groove, and the other end of the elastic structure is sleeved on the guide protrusion.

[0011] In one of the embodiments, the dirt scraping structure is constructed as an integral unit.

[0012] In one embodiment, the scraping structure has a first central axis parallel to the first direction; wherein the first direction is parallel to the axis direction of the first cleaning roller or the second cleaning roller;

[0013] The elastic structure is arranged on the first central axis;

[0014] Or the elastic structure is symmetrically distributed relative to the first central axis.

[0015] In one embodiment, the scraping structure includes a first scraping member and a second scraping member, and the elastic structure includes a first elastic member and a second elastic member. The first elastic member is disposed between the mounting seat and the first scraping member in the vertical direction and is used to provide an elastic force for keeping the first scraping member in contact with the first cleaning roller. The second elastic member is disposed between the mounting seat and the second scraping member in the vertical direction and is used to provide an elastic force for keeping the second scraping member in contact with the second cleaning roller.

[0016] In one embodiment, the first scraping member has a second central axis parallel to the first direction, and the first elastic member is disposed on the second central axis;

[0017] And / or the second scraping member has a third central axis parallel to the first direction, and the second elastic member is disposed on the third central axis.

[0018] In one embodiment, the guiding protrusion protrudes into the guiding groove.

[0019] In one embodiment, the elastic force exerted by the elastic structure on the scraping structure ranges from 5 Newtons to 25 Newtons.

[0020] In one embodiment, along the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the scraping structure has a first scraping contact portion and a second scraping contact portion. There is an interference fit between the first scraping contact portion and the first cleaning roller, and there is an interference fit between the second scraping contact portion and the second cleaning roller;

[0021] The interference amount between the first scraping contact portion and the first cleaning roller is X1, and the interference amount between the second scraping contact portion and the second cleaning roller is X2, where X1 < X2.

[0022] In one embodiment, 0.2 mm ≤ X2 - X1 ≤ 1 mm.

[0023] In one embodiment, the axes of the first cleaning roller and the second cleaning roller are symmetrically arranged relative to the central plane. The scraping structure has a first scraping arm extending from the central plane to the first cleaning roller, and the first scraping arm has a first scraping contact portion. The scraping structure has a second scraping arm extending from the central plane to the second cleaning roller, and the second scraping arm has a second scraping contact portion; wherein, the length of the first scraping arm is less than the length of the second scraping arm.

[0024] In one embodiment, along the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the cleaning mechanism further includes a water channel plate, which is arranged on the mounting seat and is used to guide water to the first cleaning roller and the second cleaning roller;

[0025] Wherein, the average amount of water provided by the water channel plate to the first cleaning roller per unit time is greater than the average amount of water provided by the water channel plate to the second cleaning roller per unit time.

[0026] In one embodiment, the ratio range of the average amount of water provided by the water channel plate to the first cleaning roller per unit time to the average amount of water provided by the water channel plate to the second cleaning roller per unit time is: 1.5:1 to 3:1.

[0027] In one embodiment, along the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the water absorption rate of the first cleaning roller is less than the water absorption rate of the second cleaning roller.

[0028] In one embodiment, the scraping structure has a first scraping contact surface, the first scraping contact surface is in contact with the first cleaning roller and is tangent to the outer surface of the first cleaning roller;

[0029] and / or the scraping structure has a second scraping contact surface, the second scraping contact surface is in contact with the second cleaning roller and is tangent to the outer surface of the second cleaning roller.

[0030] In one embodiment, the width range of the first scraping contact surface is 1 mm to 5 mm;

[0031] and / or the width range of the second scraping contact surface is 1 mm to 5 mm.

[0032] In one embodiment, the scraping structure further has a first transition slope, the first transition slope is adjacent to the first scraping contact surface and is located on the downstream side of the first scraping contact surface along the forward rotation direction of the first cleaning roller, and the first transition slope and the first scraping contact surface are arranged at an angle;

[0033] and / or the scraping structure further has a third transition slope, the third transition slope is adjacent to the second scraping contact surface and is located on the downstream side of the second scraping contact surface along the forward rotation direction of the second cleaning roller, and the third transition slope and the second scraping contact surface are arranged at an angle.

[0034] In one embodiment, there is a first angle between the first transition slope and the first scraping contact surface, and the range of the first angle is 20 degrees to 60 degrees;

[0035] and / or there is a third angle between the third transition slope and the second scraping contact surface, and the range of the third angle is 20 degrees to 60 degrees.

[0036] In one of the embodiments, the cleaning mechanism further includes an anti - detachment limiting member, which is connected to the mounting seat, and the dirt scraping structure is limited between the anti - detachment limiting member and the mounting seat.

[0037] On the other hand, the present application also provides a cleaning device, including a cleaning main body and the cleaning mechanism in any of the above - mentioned embodiments, and the cleaning mechanism is installed on the cleaning main body.

[0038] For the above - mentioned cleaning mechanism and cleaning device, when the first cleaning roller and the second cleaning roller are worn after long - term use, the elastic force of the elastic structure can be used to make the dirt scraping structure move relative to the mounting seat in the vertical direction, so that the dirt scraping structure always remains in contact with the first cleaning roller and the second cleaning roller. The first cleaning roller and the second cleaning roller can always be scraped by the dirt scraping structure to remove sewage, excess water or other impurities, etc., reducing the amount of sewage residue on the first cleaning roller and the second cleaning roller, and further reducing the water stains on the surface to be cleaned, thus improving the cleaning effect.

[0039] Moreover, since the dirt scraping structure moves relative to the mounting seat in the vertical direction, and the vertical direction is parallel to the direction of gravity, therefore, the dirt scraping structure can move smoothly without being affected by its own gravity during the vertical movement process, and the problem of movement jamming is reduced, further improving the dirt scraping reliability of the dirt scraping structure.

[0040] In addition, since the elastic structure is arranged between the dirt scraping structure and the mounting seat in the vertical direction, the guiding groove and the guiding protrusion should be matched in the vertical direction to guide the stretching and compression movement of the elastic structure. Therefore, the setting of the guiding groove and the guiding protrusion can further make the dirt scraping structure move smoothly without being affected by its own gravity during the vertical movement process, reduce the problem of movement jamming, and further improve the dirt scraping reliability of the dirt scraping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of the cleaning mechanism in one or more embodiments of the present application.

[0042] Figure 2 is Figure 1 an exploded structural diagram of a part of the cleaning mechanism shown.

[0043] Figure 3 is Figure 1 a half - sectional view of a part of the cleaning mechanism shown.

[0044] Figure 4 is Figure 3 a half - sectional view of another state of a part of the cleaning mechanism shown.

[0045] Figure 5 is Figure 1 a semi-sectional view of another angle of a partial structure of the cleaning mechanism shown in the figure.

[0046] Figure 6 is Figure 1 a sectional view of another angle of a partial structure of the cleaning mechanism shown in the figure.

[0047] Figure 7 is a semi-sectional view of a partial structure of the cleaning mechanism in another embodiment or multiple embodiments of the present application.

[0048] Explanation of reference numerals:

[0049] Cleaning mechanism 100, mounting seat 10, connecting portion 11, mating portion 12, guiding projection 13, positioning projection 14, first cleaning roller 20, second cleaning roller 30, driving mechanism 35, dirt scraping structure 40, first dirt scraping member 41, second dirt scraping member 42, guiding groove 43, positioning recess 44, first positioning recess 441, second positioning recess 442, closed cavity 45, dirt scraping body 46, extending portion 461, cover body 47, first dirt scraping contact portion 48, first dirt scraping contact surface 481, second dirt scraping contact portion 49, second dirt scraping contact surface 491, first dirt scraping arm 401, second dirt scraping arm 402, first transition slope 403, second transition slope 404, third transition slope 405, fourth transition slope 406, elastic structure 50, elastic member 51, anti-disengagement limiting member 60, water circuit board 70, cleaning direction X, first included angle α1, third included angle α2. Detailed implementation manners

[0050] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0052] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality" appears, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In this application, unless otherwise clearly stipulated and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In this application, unless otherwise clearly stipulated and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0055] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0056] As described in the background art, the robots in the related art adopt a self-cleaning solution with a roller mop cooperating with a squeegee. In practical applications, after the robot starts the cleaning function, it can continuously wet the roller mop through the water tank, and make the squeegee contact the roller mop to squeeze out the sewage on the roller mop, which is then collected by the sewage chamber, so as to achieve the purpose of cleaning the floor or other surfaces to be cleaned.

[0057] However, after the roller mop is used for a long time, wear will occur, resulting in the scraper not being in contact with the roller mop anymore, causing the scraper to be unable to squeeze out the sewage on the roller mop, increasing the amount of sewage residue on the roller mop, and further increasing the water stains on the surface to be cleaned, resulting in a poor cleaning effect.

[0058] To solve the problem that the water stains on the surface to be cleaned increase and the cleaning effect deteriorates after the roller mop is used for a long time, the related art adopts a scheme of using a wear-resistant roller mop or regularly asking users to replace the scraper, but both require manual intervention and cannot achieve automatic adjustment of the robot.

[0059] Therefore, this application designs a cleaning mechanism and a cleaning device, which can automatically adjust the scraper so that the scraper can keep in contact with the roller mop, thereby solving the problem that the water stains on the surface to be cleaned increase and the cleaning effect deteriorates after the roller mop is used for a long time.

[0060] Refer to Figures 1 to 5 , a cleaning mechanism 100 provided by an embodiment of this application includes a mounting seat 10, a first cleaning roller 20, a second cleaning roller 30, and a sewage scraping structure 40. The cleaning mechanism 100 of the embodiment of this application can be a part of the cleaning device and is detachably connected to the main body part of the cleaning device. For example, the cleaning mechanism 100 can be used as the cleaning head of a hand-held floor washer or a hand-held mop. In some other embodiments, the cleaning mechanism 100 can also be a separate whole to achieve the automatic cleaning function. For example, the cleaning mechanism 100 is a cleaning robot, and also includes a transmission mechanism, a controller and other structures.

[0061] The first cleaning roller 20 and the second cleaning roller 30 are both rotatably mounted on the mounting seat 10 about their own axes and are arranged at intervals along the cleaning direction X.

[0062] Among them, the mounting base 10 refers to a seat structure capable of mounting components. The mounting base 10 can be block-shaped, flat-plate-shaped, or a bracket structure, etc. Specifically, in the embodiment of the present application, the mounting base 10 has a connecting portion 11 and mating portions 12 connected to both sides of the connecting portion 11. Each mating portion 12 extends in an arc shape away from the connecting portion 11. The first cleaning roller 20 and the second cleaning roller 30 can be respectively mounted inside the two mating portions 12. In this way, a mating gap can be formed between the first cleaning roller 20 and the mating portion 12 and between the second cleaning roller 30 and the mating portion 12. The mating portion 12 can not only protect the first cleaning roller 20 and the second cleaning roller 30, but also block the water thrown outwards due to rotation during the cleaning process by the first cleaning roller 20 and the second cleaning roller 30. In addition, when the cleaning mechanism 100 also has a dust suction function, this mating gap can also enable the first cleaning roller 20 and the second cleaning roller 30 to have sufficient suction to suck dust, sewage, etc. between them and the mounting base 10.

[0063] The cleaning direction X is the traveling direction of the cleaning mechanism 100, which can specifically refer to the direction in which the cleaning mechanism 100 cleans forward.

[0064] Both the first cleaning roller 20 and the second cleaning roller 30 can rotate around their own axes under the driving action of the driving mechanism 35. In the embodiment of the present application, the setting of the two cleaning rollers, namely the first cleaning roller 20 and the second cleaning roller 30, can not only improve the cleaning efficiency and speed, but also the functions of the first cleaning roller 20 and the second cleaning roller 30 are different. When the first cleaning roller 20 is in front of the second cleaning roller 30 along the cleaning direction X, the function of the first cleaning roller 20 is to wet the surface to be cleaned by rotation, while the function of the second cleaning roller 30 is to wipe the wetted surface to be cleaned by rotation. In this way, the ability to remove stains on the surface to be cleaned can be further improved.

[0065] The dirt scraping structure 40 is provided on the mounting base 10 and can be in contact with the first cleaning roller 20 and the second cleaning roller 30. The dirt scraping structure 40 refers to a component capable of scraping dirt on a component. In the embodiment of the present application, the dirt scraping structure 40 can scrape sewage, excess water, or other impurities, etc. on the first cleaning roller 20 and the second cleaning roller 30. The dirt scraped by the dirt scraping structure 40 will be recycled through the recycling mechanism on the cleaning mechanism 100. The recycling mechanism can include a dirt receiving member, a dirt suction pipe, a sewage tank, and a vacuum pump, etc. The sewage tank generates negative pressure through the vacuum pump, and the sewage tank is connected to the dirt receiving member through the dirt suction pipe. In this way, the sewage in the dirt receiving member can be sucked through the dirt suction pipe into the sewage tank for collection by means of vacuum suction. The sewage in the sewage tank can wait for the user to clean and discharge it or be automatically cleaned and discharged at the base station.

[0066] It should be noted here that in order to achieve a better sewage scraping effect, there is usually a certain interference amount between the sewage scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30. Therefore, the sewage scraping structure 40 can be abutted against the surfaces of the first cleaning roller 20 and the second cleaning roller 30, and can smoothly scrape off the sewage, excess water or other impurities on the first cleaning roller 20 and the second cleaning roller 30.

[0067] In the embodiment of the present application, the sewage scraping structure 40 is movably arranged on the mounting seat 10. That is to say, the sewage scraping structure 40 is not fixed on the mounting seat 10, but can move relative to the first cleaning roller 20 and the second cleaning roller 30 on the mounting seat 10. Therefore, the interference amount between the sewage scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30 can be adjusted according to the actual situation. Therefore, when the first cleaning roller 20 and the second cleaning roller 30 are worn after long-term use, the sewage scraping structure 40 can be adjusted to keep the sewage scraping structure 40 in contact with the first cleaning roller 20 and the second cleaning roller 30, reduce the amount of sewage remaining on the first cleaning roller 20 and the second cleaning roller 30, and further reduce the water stains on the surface to be cleaned, thereby improving the cleaning effect.

[0068] In order to realize the automatic adjustment of the interference amount between the sewage scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30, in the embodiment of the present application, the cleaning mechanism 100 further includes an elastic structure 50. The elastic structure 50 is arranged between the mounting seat 10 and the sewage scraping structure 40 in the vertical direction, and is used to provide an elastic force F that keeps the sewage scraping structure 40 in contact with the first cleaning roller 20 and the second cleaning roller 30. Specifically, the elastic structure 50 is arranged between the mounting seat 10 and the sewage scraping structure 40 in the vertical direction. In this way, a vertical elastic force can be provided to the sewage scraping structure 40.

[0069] The elastic structure 50 refers to a structure that can undergo elastic deformation under the action of an external force and has an elastic restoring force that can automatically restore the elastic deformation. When the elastic structure 50 is arranged between the mounting seat 10 and the sewage scraping structure 40 in the vertical direction, since the mounting seat 10 is fixed, the sewage scraping structure 40 can move relative to the mounting seat 10 in the vertical direction when the elastic structure 50 makes a stretching or contracting movement, thereby realizing the movement of the sewage scraping structure 40.

[0070] Therefore, after the first cleaning roller 20 and the second cleaning roller 30 are worn out after long-term use, the elastic force of the elastic structure 50 can be used to move the sewage scraping structure 40 relative to the mounting base 10 in the vertical direction, so that the sewage scraping structure 40 always remains in contact with the first cleaning roller 20 and the second cleaning roller 30. The first cleaning roller 20 and the second cleaning roller 30 can always be scraped off sewage, excess water or other impurities under the action of the sewage scraping structure 40, reducing the amount of sewage remaining on the first cleaning roller 20 and the second cleaning roller 30, thereby reducing the water stains on the surface to be cleaned and improving the cleaning effect.

[0071] Moreover, since the sewage scraping structure 40 moves relative to the mounting base 10 in the vertical direction, and the vertical direction is parallel to the direction of gravity, therefore, the sewage scraping structure 40 can move smoothly in the vertical direction without being affected by its own gravity and toppling over. The sewage scraping structure 40 moves more smoothly during the movement process, reducing the problem of movement jamming, and further improving the sewage scraping reliability of the sewage scraping structure 40.

[0072] Specifically, in the embodiment of the present application, the sewage scraping structure 40 can be configured as a whole.

[0073] When the sewage scraping structure 40 is configured as a whole, the elastic structure 50 can provide an elastic force to the whole sewage scraping structure 40, so that the sewage scraping structure 40 can simultaneously remain in contact with the first cleaning roller 20 and the second cleaning roller 30. Moreover, after the sewage scraping structure 40 is a whole, the overall structure of the cleaning mechanism 100 is simplified, making the structure of the cleaning mechanism 100 more compact and more conducive to the miniaturization of the cleaning mechanism 100.

[0074] Furthermore, the sewage scraping structure 40 has a first central axis parallel to the first direction, wherein the first direction is parallel to the axis direction of the first cleaning roller 20 or the second cleaning roller 30, and the elastic structure 50 is arranged on the first central axis.

[0075] The first direction mentioned here is also Figure 3 the direction perpendicular to the paper surface as shown.

[0076] Since the sewage scraping structure 40 needs to scrape the first cleaning roller 20 and the second cleaning roller 30 at the same time, therefore, when the elastic structure 50 is arranged on the first central axis of the sewage scraping structure 40, the force on both sides of the sewage scraping structure 40 along the first central axis can be made uniform, so that the sewage scraping structure 40 can maintain a stable contact with the first cleaning roller 20 and the second cleaning roller 30 at the same time. In addition, by arranging the elastic structure 50 on the first central axis, the elastic force of the elastic structure 50 can act on the two cleaning rollers evenly. Therefore, the overall structural design of the cleaning mechanism 100 is simplified, making the structure of the cleaning mechanism 100 more compact and more miniaturized.

[0077] In other embodiments, the elastic structure 50 may also be symmetrically distributed relative to the first central axis. In this way, the forces on both sides of the scraping structure 40 along the first central axis are uniform, so that the scraping structure 40 can maintain stable contact with both the first cleaning roller 20 and the second cleaning roller 30 at the same time.

[0078] Preferably, the elastic structure 50 includes at least two elastic members 51, such as three, four or six, etc., and all the elastic structures 50 are arranged at intervals from each other in the first direction.

[0079] By arranging all the elastic members 51 at intervals from each other in the first direction, the elastic force provided by the elastic members 51 to the scraping structure 40 can be made uniform, and the scraping structure 40 is in balanced force, so that the contact between the scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30 is comprehensive and stable, improving the scraping effect.

[0080] Please refer to Figure 7 , specifically in another embodiment of the present application, the scraping structure 40 includes a first scraping member 41 and a second scraping member 42, the elastic structure 50 includes a first elastic member and a second elastic member, the first elastic member is arranged vertically between the mounting seat 10 and the first scraping member 41 for providing an elastic force to keep the first scraping member 41 in contact with the first cleaning roller 20, and the second elastic member is arranged vertically between the mounting seat 10 and the second scraping member 42 for providing an elastic force to keep the second scraping member 42 in contact with the second cleaning roller 30.

[0081] In this way, compared with the embodiment in which the scraping structure 40 is a whole, in this embodiment, the scraping structure 40 is divided into two independent parts, namely the first scraping member 41 and the second scraping member 42, and the first elastic member and the second elastic member are respectively used to provide elastic forces to them. Since the first cleaning roller 20 and the second cleaning roller 30 are distributed at different positions in the cleaning direction, and the vertical direction is perpendicular to the cleaning direction, there will be no position interference between the first scraping member 41 and the second cleaning roller 30, and there will be no position interference between the second scraping member 42 and the first cleaning roller 20, so that the first scraping member 41 and the second scraping member 42 can respectively and reliably scrape the first cleaning roller 20 and the second cleaning roller 30. In addition, the independent setting mode of the first scraping member 41 and the second scraping member 42 can also adapt to different situations of scraping the first cleaning roller 20 and the second cleaning roller 30, improving the scraping effect on the first cleaning roller 20 and the second cleaning roller 30.

[0082] Similarly, since both the first scraping member 41 and the second scraping member 42 can move relative to the mounting base 10 in the vertical direction, and the vertical direction is parallel to the direction of gravity, therefore, the first scraping member 41 and the second scraping member 42 can be prevented from tipping due to the influence of their own gravity during the movement in the vertical direction. The first scraping member 41 and the second scraping member 42 move more smoothly during the movement, reducing the problem of movement jamming, and further improving the scraping reliability of the first scraping member 41 and the second scraping member 42.

[0083] Further, the first scraping member 41 has a second central axis parallel to the first direction, and the first elastic member is disposed on the second central axis. When the first elastic member is disposed on the second central axis of the first scraping member 41, the forces on both sides of the first scraping member 41 along the second central axis can be made uniform, so that the first scraping member 41 can maintain a stable contact with the first cleaning roller 20. In other embodiments, the first elastic members can also be arranged symmetrically with respect to the second central axis. In this way, the forces on both sides of the first scraping member 41 along the second central axis are uniform, so that the first scraping member 41 can maintain a stable contact with the first cleaning roller 20.

[0084] Similarly, the second scraping member 42 has a third central axis parallel to the first direction, and the second elastic member is disposed on the third central axis. In this way, the forces on both sides of the second scraping member 42 along the third central axis can be made uniform, so that the second scraping member 42 can maintain a stable contact with the second cleaning roller 30. In other embodiments, all the second elastic members can also be arranged symmetrically with respect to the third central axis. In this way, the forces on both sides of the second scraping member 42 along the third central axis are uniform, so that the second scraping member 42 can maintain a stable contact with the second cleaning roller 30.

[0085] In some embodiments, the number of the first elastic members can include at least two, such as three, four or six, etc., and all the first elastic members are spaced apart from each other in the first direction. Similarly, the number of the second elastic members can include at least two, such as three, four or six, etc., and all the second elastic members are spaced apart from each other in the first direction.

[0086] By arranging all the first elastic members to be spaced apart from each other in the first direction, the elastic force provided by the first elastic members to the first scraping member 41 can be made uniform, and the first scraping member 41 is in force balance, so that the contact between the first scraping member 41 and the first cleaning roller 20 is comprehensive and stable, improving the scraping effect. By arranging all the second elastic members to be spaced apart from each other in the first direction, the elastic force provided by the second elastic members to the second scraping member 42 can be made uniform, and the second scraping member 42 is in force balance, so that the contact between the second scraping member 42 and the second cleaning roller 30 is comprehensive and stable, improving the scraping effect.

[0087] In some embodiments, the elastic force exerted by the elastic structure 50 on the scraping structure 40 ranges from 5 N to 25 N.

[0088] The elastic force exerted by the elastic structure 50 on the scraping structure 40 ranging from 5 N to 25 N means that when the elastic structure 50 is compressed to its shortest length, at this time the scraping structure 40 is at the topmost position, the elastic force exerted by the elastic structure 50 on the scraping structure 40 does not exceed 25 N. When the elastic structure 50 is compressed to its longest length, at this time the scraping structure 40 is at the bottommost position, the elastic force exerted by the elastic structure 50 on the scraping structure 40 is not less than 5 N.

[0089] Within this range, the scraping structure 40 can always maintain a certain interference amount with the first cleaning roller 20 and the second cleaning roller 30 during the initial stage and the later wear process of the first cleaning roller 20 and the second cleaning roller 30, improving the scraping effect and thus enhancing the cleaning effect.

[0090] It should be noted that when the elastic structure 50 includes a plurality of elastic members 51, the elastic force exerted by the elastic structure 50 on the scraping structure 40 ranging from 5 N to 25 N means that the elastic force exerted by all the elastic members 51 on the scraping structure 40 ranges from 5 N to 25 N. When the elastic structure 50 includes a plurality of first elastic members and a plurality of second elastic members, the elastic force exerted by the elastic structure 50 on the scraping structure 40 ranging from 5 N to 25 N means that the elastic force exerted by all the first elastic members on the first scraping member 41 ranges from 5 N to 25 N, and the elastic force exerted by all the second elastic members on the second scraping member 42 ranges from 5 N to 25 N.

[0091] In the embodiment of the present application, the elastic structure 50 is specifically a spring, that is, the elastic member 51, the first elastic member and the second elastic member are springs. In other embodiments, it can also be replaced by an elastic structure, such as rubber, etc.

[0092] Please refer to Figure 5 , in order to further enable the elastic structure 50 to reliably provide elastic force for the scraping structure 40, in the embodiment of the present application, one of the scraping structure 40 and the mounting base 10 is provided with a guiding groove 43, and the other of them is provided with a guiding protrusion 13. One end of the elastic structure 50 is positioned in the guiding groove 43, and the other end of the elastic structure 50 is sleeved on the guiding protrusion 13.

[0093] In this way, the elastic structure 50 can be simultaneously restricted circumferentially by the guiding groove 43 and the guiding protrusion 13, so it is smoother during the compression and stretching movements, thereby making the force on the scraping structure 40 more uniform and improving the scraping effect.

[0094] In addition, since the elastic structure 50 is arranged vertically between the scraping structure 40 and the mounting base 10, the guiding groove 43 and the guiding protrusion 13 should be vertically matched to guide the stretching and compressing movements of the elastic structure 50. Therefore, the arrangement of the guiding groove 43 and the guiding protrusion 13 can further prevent the scraping structure 40 from tipping due to its own gravity during the vertical movement, making the movement of the scraping structure 40 smoother, reducing the problem of movement jamming, and further improving the scraping reliability of the scraping structure 40.

[0095] Specifically, in the embodiment of the present application, the scraping structure 40 has a guiding groove 43, and the mounting base 10 has a guiding protrusion 13. In other embodiments, it can also be that the scraping structure 40 has a guiding protrusion 13 and the mounting base 10 has a guiding groove 43.

[0096] Furthermore, the guiding protrusion 13 protrudes into the guiding groove 43.

[0097] In this way, through the cooperation of the guiding protrusion 13 and the guiding groove 43, the positioning of the scraping structure 40 relative to the mounting base 10 can also be realized, so as to guide the movement of the scraping structure 40 during the movement of the scraping structure 40 relative to the mounting base 10 and improve the stability of the movement.

[0098] It should be noted here that when the scraping structure 40 is constructed as a whole and the elastic structure 50 includes an elastic member 51, one end of the elastic member 51 is positioned in the guiding groove 43, and the other end of the elastic structure 50 is sleeved on the guiding protrusion 13. When the scraping structure 40 is divided into two independent parts, namely the first scraping member 41 and the second scraping member 42, and the elastic structure 50 includes a first elastic member and a second elastic member, there should be two guiding grooves 43 and two guiding protrusions 13. One end of the first elastic member is positioned in one of the guiding grooves 43, the other end of the elastic structure 50 is sleeved on the corresponding guiding protrusion 13, and the second elastic member is positioned in the other guiding groove 43, and the other end of the elastic structure 50 is sleeved on the corresponding other guiding protrusion 13.

[0099] Combined with Figure 3 and Figure 6, in addition, since the scraping structure 40 is movably disposed on the mounting seat 10 in the vertical direction, and the first cleaning roller 20 and the second cleaning roller 30 are spaced apart from each other in the cleaning direction, the cleaning direction is parallel to the horizontal direction, so the cleaning direction is perpendicular to the vertical direction. When the acting forces of the first cleaning roller 20 and the second cleaning roller 30 on the scraping structure 40 cannot keep the scraping structure 40 balanced, the scraping structure 40 is very likely to shift in the cleaning direction or deflect at an angle relative to the horizontal plane, which affects the contact relationship between the scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30. For example, when the scraping structure 40 shifts forward in the cleaning direction, the interference amount between the scraping structure 40 and the first cleaning roller 20 becomes larger, and the interference amount between the scraping structure 40 and the second cleaning roller 30 becomes smaller or even there is no contact. In this way, the scraping effect of the scraping structure 40 will be poor, the cleaning effect will be reduced, and the first cleaning roller 20, the second cleaning roller 30, and the scraping structure 40 may also be damaged, resulting in the scrapping of parts.

[0100] Therefore, in the embodiment of the present application, one of the mounting seat 10 and the scraping structure 40 is provided with a positioning convex portion 14 protruding in the vertical direction, and the other of the mounting seat 10 and the scraping structure 40 is provided with a positioning concave portion 44, and the positioning convex portion 14 cooperates with the positioning concave portion 44.

[0101] By providing the positioning convex portion 14 and the corresponding positioning concave portion 44 in the vertical direction for cooperation, the mounting seat 10 and the scraping structure 40 can be limited and constrained, so as to limit the shift of the scraping structure 40 in the cleaning direction and the angular deviation relative to the horizontal plane, prevent the interference amount between the scraping structure 40 and the first cleaning roller 20 and the second cleaning roller 30 from being affected, improve the reliability of scraping, and further improve the cleaning effect. In addition, since the scraping structure 40 is movable relative to the mounting seat 10 in the vertical direction, when the scraping structure 40 moves relative to the mounting seat 10 in the vertical direction, due to the cooperation of the positioning convex portion 14 protruding in the vertical direction and the positioning concave portion 44, it also plays a role in guiding the movement, reducing the jamming phenomenon during the movement of the scraping structure 40 relative to the mounting seat 10 in the vertical direction, and improving the reliability of the movement.

[0102] Further, there are multiple positioning convex portions 14. Preferably, the number of the positioning convex portions 14 can include three, four, five, six, etc. There are multiple positioning concave portions 44. All the positioning convex portions 14 are spaced apart from each other in the first direction and are arranged in one-to-one correspondence with all the positioning concave portions 44. Among them, the first direction is parallel to the axis direction of the first cleaning roller 20 or the second cleaning roller 30.

[0103] By arranging all the positioning convex portions 14 to be spaced apart from each other in the first direction, the cooperation between the plurality of positioning convex portions 14 and the plurality of positioning concave portions 44 can limit the scraping structure 40 more evenly, expand the limitation range of the scraping structure 40, and improve the reliability of the limit.

[0104] Further, all the positioning concave portions 44 include at least one first positioning concave portion 441 and at least one second positioning concave portion 442. The dimension of the first positioning concave portion 441 in the first direction matches the dimension of the corresponding positioning convex portion 14 in the first direction, and there is a first adjustment gap between the second positioning concave portion 442 and the corresponding positioning convex portion 14 in the first direction.

[0105] Since the dimension of the scraping structure 40 in the first direction is relatively long, the first adjustment gap is provided to compensate for the manufacturing error of the scraping structure 40 or the mounting base 10, so that all the positioning convex portions 14 can cooperate with the corresponding positioning concave portions 44, and the assembly reliability between the scraping structure 40 and the mounting base 10 is improved.

[0106] In an embodiment of the present application, there may be two second positioning concave portions 442, and the two second positioning concave portions 442 may be located at both ends of all the positioning concave portions 44. In this way, the manufacturing error of the scraping structure 40 or the mounting base 10 can be compensated by the cooperation between the second positioning concave portion 442 and the corresponding positioning convex portion 14.

[0107] Specifically, the cross-sectional shape of the second positioning concave portion 442 is elliptical, and the positioning convex portion 14 corresponding to the second positioning concave portion 442 is cylindrical.

[0108] It should be noted here that the length direction of the ellipse is parallel to the first direction.

[0109] By arranging the elliptical second positioning concave portion 442 to cooperate with the cylindrical positioning convex portion 14, a first adjustment gap between the second positioning concave portion 442 and the corresponding positioning convex portion 14 in the first direction can be formed, and this structure is simple and reliable. In addition, there are certain adjustment gaps on both sides of the positioning convex portion 14 in the first direction, which improves the adjustment range.

[0110] In some embodiments, along the first direction, the length of the scraping structure 40 is L, and the distance value between the two positioning convex portions 14 located at both ends of all the positioning convex portions 14 is 1 / 2L to 4 / 5L.

[0111] In this way, the distance between the positioning convex portions 14 at both ends can be increased, and the positioning convex portions 14 at both ends can be made as close as possible to both ends of the length direction of the scraping structure 40. After all the positioning convex portions 14 are engaged with the positioning concave portions 44, the deformation risk of both ends of the scraping structure 40 when stressed can be reduced, and the scraping reliability of the scraping structure 40 can be improved.

[0112] In some embodiments, when the scraping structure 40 is taken as a whole, the scraping structure 40 has a first central axis parallel to the first direction, and all the positioning protrusions 14 or all the positioning recesses 44 are arranged on the first central axis.

[0113] Thus, since the scraping structure 40 needs to scrape the first cleaning roller 20 and the second cleaning roller 30 simultaneously, when all the positioning protrusions 14 or all the positioning recesses 44 are arranged on the first central axis, the scraping structure 40 can be restricted on both sides of the first central axis, so that the scraping structure 40 can maintain stable contact with the first cleaning roller 20 and the second cleaning roller 30 simultaneously. In addition, by arranging all the positioning protrusions 14 or all the positioning recesses 44 on the first central axis, the overall structural design of the cleaning mechanism 100 can be simplified, making the cleaning mechanism 100 more compact and smaller.

[0114] In other embodiments, the positioning protrusions 14 or all the positioning recesses 44 can also be symmetrically distributed relative to the first central axis. In this way, the scraping structure 40 can be restricted on both sides of the first central axis, so that the scraping structure 40 can maintain stable contact with the first cleaning roller 20 and the second cleaning roller 30 simultaneously.

[0115] It should be noted that when the scraping structure 40 is divided into two independent parts, namely the first scraping member 41 and the second scraping member 42, the positioning protrusions 14 and the matching positioning recesses 44 of the mounting seat 10 and the scraping structure 40 should include two groups, which are respectively arranged on the mounting seat 10 and the first scraping member 41, and the mounting seat 10 and the second scraping member 42. Specifically, one of the mounting seat 10 and the first scraping member 41 protrudes vertically with a positioning protrusion 14, and the other of the mounting seat 10 and the first scraping member 41 is provided with a positioning recess 44, and the positioning protrusion 14 is matched with the positioning recess 44. And, one of the mounting seat 10 and the second scraping member 42 protrudes vertically with another positioning protrusion 14, and the other of the mounting seat 10 and the second scraping member 42 is provided with another positioning recess 44, and the another positioning protrusion 14 is matched with the another positioning recess 44.

[0116] In addition, the above-mentioned ways that the positioning protrusions 14 and the positioning recesses 44 include a plurality of ways arranged at intervals in the first direction, and the way that the positioning recess 44 includes the first positioning recess 441 and the second positioning recess 442 can also be applied to the positioning protrusions 14 and the positioning recesses 44 in each group, which will not be elaborated here.

[0117] Combined with Figure 5 , in some embodiments, when the cleaning mechanism 100 includes an elastic structure 50, the elastic structure 50 is distributed on opposite sides of at least one positioning protrusion 14.

[0118] In this way, the elastic forces of the elastic structure 50 on both sides of the positioning convex portion 14 can be balanced, so that the force on the entire scraping structure 40 is more balanced, the matching relationship between the positioning convex portion 14 and the positioning concave portion 44 is better, and further, the displacement of the scraping structure 40 along the cleaning direction and the angular deviation relative to the horizontal plane are reduced, improving the scraping effect.

[0119] Specifically, when the elastic structure 50 includes a plurality of elastic members 51, at least two elastic members 51 are distributed on opposite sides of at least one positioning convex portion 14. When the elastic structure 50 includes a plurality of first elastic members and a plurality of second elastic members, at least two first elastic members are distributed on opposite sides of at least one positioning convex portion 14 corresponding to the first scraping member 41, and at least two second elastic members are distributed on opposite sides of at least one positioning convex portion 14 corresponding to the second scraping member 42.

[0120] Specifically, when the positioning convex portion 14 includes a plurality of spaced-apart ones along the first direction, portions of the elastic structure 50 are provided on opposite sides of at least one positioning convex portion 14 along the first direction.

[0121] The portion of the elastic structure 50 referred to here can be an elastic member 51, or a first elastic member or a second elastic member. Specifically, when the elastic structure 50 includes a plurality of elastic members 51 and the positioning convex portion 14 includes a plurality of spaced-apart ones along the first direction, elastic members 51 are provided on opposite sides of at least one positioning convex portion 14 along the first direction. When the elastic structure 50 includes a plurality of first elastic members and a plurality of second elastic members and the positioning convex portion 14 corresponding to the first scraping member 41 includes a plurality of spaced-apart ones along the first direction, first elastic members are provided on opposite sides of at least one positioning convex portion 14 corresponding to the second scraping member 42 along the first direction. When the positioning convex portion 14 corresponding to the second scraping member 42 includes a plurality of spaced-apart ones along the first direction, second elastic members are provided on opposite sides of at least one positioning convex portion 14 corresponding to the second scraping member 42 along the first direction.

[0122] The first direction is the length direction of the scraping structure 40. Therefore, there is sufficient space for the elastic structure 50 and the positioning convex portion 14 to be arranged together in the first direction, making the structure of the cleaning mechanism 100 more compact. Moreover, the elastic structure 50 is also restricted by the cooperation between the positioning convex portion 14 and the positioning concave portion 44 in the first direction, and is not prone to torsion or deviation, improving the reliability of the elastic structure 50 in providing elastic force, thereby enhancing the scraping effect.

[0123] More specifically, elastic structures 50 are provided on both opposite sides of all the positioning protrusions 14 along the first direction, and a part of an elastic structure 50 can be shared between two adjacent positioning protrusions 14. In this way, the situation where the cleaning mechanism 100 becomes complex due to the complex structure of the elastic structure 50 can be avoided.

[0124] That is to say, when the elastic structure 50 includes a plurality of elastic members 51, elastic members 51 are provided on both opposite sides of all the positioning protrusions 14 along the first direction, and an elastic member 51 can be shared between two adjacent positioning protrusions 14. When the elastic structure 50 includes a plurality of first elastic members and a plurality of second elastic members, first elastic members are provided on both opposite sides of all the positioning protrusions 14 corresponding to the first scraping member 41 along the first direction, and a first elastic member can be shared between two adjacent positioning protrusions 14 corresponding to the first scraping member 41. Second elastic members are provided on both opposite sides of all the positioning protrusions 14 corresponding to the second scraping member 42 along the first direction, and a second elastic member can be shared between two adjacent positioning protrusions 14 corresponding to the second scraping member 42.

[0125] Of course, in other embodiments, the position of the elastic structure 50 can also coincide with the position of the positioning protrusion 14. Specifically, the elastic structure 50 can be sleeved on the positioning protrusion 14 so that their positions coincide.

[0126] By setting the position of the elastic structure 50 to coincide with the position of the positioning protrusion 14, the elastic force of the elastic structure 50 acting on the matching position between the positioning protrusion 14 and the positioning recess 44 can also be balanced, thereby improving the matching relationship between the positioning protrusion 14 and the positioning recess 44, further reducing the displacement of the scraping structure 40 along the cleaning direction and the angular deviation relative to the horizontal plane, and improving the scraping effect.

[0127] Refer to Figure 3 , in the embodiment of the present application, the cleaning mechanism 100 further includes an anti - detachment limiting member 60. The anti - detachment limiting member 60 is connected to the mounting base 10, and the scraping structure 40 is limited between the anti - detachment limiting member 60 and the mounting base 10.

[0128] Since the scraping structure 40 is movable relative to the mounting base 10, limiting the scraping structure 40 between the anti - detachment limiting member 60 and the mounting base 10 can limit the moving range of the scraping structure 40 relative to the mounting base 10, improve the scraping reliability, and reduce the risk of damage to the scraping structure 40.

[0129] It should be noted here that when the scraping structure 40 is taken as a whole, the scraping structure 40 is limited between the anti - detachment limiting member 60 and the mounting base 10. When the scraping structure 40 includes a first scraping member 41 and a second scraping member 42, there can be two anti - detachment limiting members 60. The first scraping member 41 is limited between one of the anti - detachment limiting members 60 and the mounting base 10, and the second scraping member 42 is limited between the other anti - detachment limiting member 60 and the mounting base 10.

[0130] Specifically, the moving range of the scraping structure 40 moving relative to the mounting base 10 in the vertical direction is 0.5 mm - 5 mm.

[0131] Specifically, the positioning recess 44 penetrates the scraping structure 40 or the mounting base 10 in the vertical direction. One end of the positioning protrusion 14 penetrates the positioning recess 44, and the anti - detachment limiting member 60 is fixed at the end of the positioning protrusion 14 where it penetrates the positioning recess 44.

[0132] In this way, by fixing the anti - detachment limiting member 60 on the positioning protrusion 14, the structure of the positioning protrusion 14 is utilized, which simplifies the setting of the anti - detachment limiting member 60. And since the distribution position of the positioning protrusion 14 relative to the scraping structure 40 is relatively centered or evenly distributed, the limiting force of the anti - detachment limiting member 60 on the scraping structure 40 is also balanced, improving the limiting reliability.

[0133] Preferably, the anti - detachment limiting member 60 is a screw, and the screw is matched with the screw hole at the end of the positioning protrusion 14 to achieve fixation.

[0134] Specifically in the way of this application, when the scraping structure 40 is provided with a positioning recess 44, the positioning recess 44 penetrates the scraping structure 40 in the vertical direction, and one end of the positioning protrusion 14 on the mounting base 10 penetrates the positioning recess 44. Relatively speaking, the side of the scraping structure 40 facing away from the mounting base 10 is usually the bottom surface of the cleaning mechanism 100. Therefore, there are fewer components and the structure is simpler. Therefore, it is more convenient to set the anti - detachment limiting member 60 and the overall structure is also simplified.

[0135] In some embodiments, when the scraping structure 40 is provided with a positioning recess 44, the scraping structure 40 further has a closed cavity 45, and the anti - detachment limiting member 60 is arranged in the closed cavity 45.

[0136] Since the scraping structure 40 needs to scrape off the sewage and other impurities on the first cleaning roller 20 and the second cleaning roller 30, sewage or impurities will enter the gap between the anti-slip limiter 60 and the scraping structure 40, and then enter the gap between the positioning protrusion 14 and the positioning recess 44, which will affect the matching relationship between the positioning protrusion 14 and the positioning recess 44, causing the scraping structure 40 to get stuck when moving relative to the mounting seat 10. Therefore, the embodiment of the present application arranges the anti-slip limiter 60 in the closed cavity 45 of the scraping structure 40, which can reduce the sewage or impurities entering the gap between the anti-slip limiter 60 and the scraping structure 40, thereby reducing the risk of entering the gap between the positioning protrusion 14 and the positioning recess 44, and making the scraping structure 40 move more smoothly relative to the mounting seat 10.

[0137] Specifically, the scraping structure 40 includes a scraping body 46 and a cover 47 . The scraping body 46 is provided with a positioning recess 44 . The cover 47 is detachably covered on the scraping body 46 and forms a closed cavity 45 with the scraping body 46 .

[0138] By providing the cover body 47 and the scraper body 46 to cooperate to form the closed cavity 45 , after the cover body 47 is removed relative to the scraper body 46 , the anti-dropping limiter 60 can be easily installed and removed relative to the positioning protrusion 14 .

[0139] Optionally, the scraper body 46 and the cover body 47 are detachably connected by snap-fitting.

[0140] More specifically, the scraper body 46 also has an extension portion 461 that surrounds the outer circumference of the anti-slip limit piece 60 and protrudes toward the side facing away from the mounting seat 10 from the anti-slip limit piece 60. The extension portion 461 forms a mounting opening on the side facing away from the mounting seat 10, and the cover body 47 is covered at the mounting opening to form a closed cavity 45 between the scraper body 46 and the cover body 47.

[0141] By arranging an extension portion 461 around the outer periphery of the anti-slip limit member 60 and forming a mounting opening, on the one hand, the installation and disassembly of the anti-slip limit member 60 relative to the positioning protrusion 14 of the mounting seat 10 can be facilitated. On the other hand, the extension portion 461 can also guide the sewage and other impurities scraped by the scraping body 46 to be discharged downward in the vertical direction, reducing the situation of flowing into the closed cavity 45 from the mounting opening, and further reducing the sewage or impurities entering the gap between the anti-slip limit member 60 and the scraping structure 40.

[0142] In other embodiments, a concave cavity may be formed on the side of the cover 47 facing the dirt-scraping body 46, and the concave cavity surrounds the outer periphery of the anti-detachment limiter 60, so that a closed cavity 45 is formed between the dirt-scraping body 46 and the cover 47. In this way, the installation and removal of the anti-detachment limiter 60 can be facilitated, and the gap between the anti-detachment limiter 60 and the dirt-scraping structure 40 can be reduced to reduce the entry of sewage or impurities.

[0143] As described above, along the cleaning direction, the first cleaning roller 20 is located in front of the second cleaning roller 30, and the functions of the two cleaning rollers are different. The function of the first cleaning roller 20 is to wet the surface to be cleaned by rotation, while the function of the second cleaning roller 30 is to wipe the wetted surface to be cleaned by rotation. Therefore, the surface humidity of the first cleaning roller 20 is higher than that of the second cleaning roller 30. Therefore, in the present application, such a difference can be achieved through the following three implementation manners.

[0144] Referring to Figure 3 and Figure 4 , in an implementation manner of the present application, the dirt scraping structure 40 has a first dirt scraping contact portion 48 and a second dirt scraping contact portion 49. An interference fit is provided between the first dirt scraping contact portion 48 and the first cleaning roller 20, and an interference fit is provided between the second dirt scraping contact portion 49 and the second cleaning roller 30. Among them, the interference amount between the first dirt scraping contact portion 48 and the first cleaning roller 20 is X1, and the interference amount between the second dirt scraping contact portion 49 and the second cleaning roller 30 is X2, where X1 < X2.

[0145] The first dirt scraping contact portion 48 refers to the portion of the dirt scraping structure 40 that directly contacts the first cleaning roller 20 to scrape the first cleaning roller 20, and the second dirt scraping contact portion 49 refers to the portion of the dirt scraping structure 40 that directly contacts the second cleaning roller 30 to scrape the second cleaning roller 30. When the dirt scraping structure 40 includes a first dirt scraping member 41 and a second dirt scraping member 42, the first dirt scraping contact portion 48 is provided on the first dirt scraping member 41, and the second dirt scraping contact portion 49 is provided on the second dirt scraping member 42. An interference fit between the first dirt scraping contact portion 48 and the first cleaning roller 20 causes an interference amount between the first dirt scraping contact portion 48 and the first cleaning roller 20, and an interference fit between the second dirt scraping contact portion 49 and the second cleaning roller 30 causes an interference amount between the second dirt scraping contact portion 49 and the second cleaning roller 30.

[0146] When X1 < X2, that is to say, the second dirt scraping contact portion 49 is pressed more tightly against the corresponding cleaning roller than the first dirt scraping contact portion 48. In this way, more sewage and the like on the second cleaning roller 30 can be scraped off, while the first cleaning roller 20 relatively retains more water. Therefore, it can be realized that the first cleaning roller 20 wets the surface to be cleaned by rotation, while the second cleaning roller 30 wipes the wetted surface to be cleaned by rotation, further improving the stain removal ability of the surface to be cleaned. Preferably, 0.2 mm ≤ X2 - X1 ≤ 1 mm. It has been found through research that within this range, the corresponding cleaning capabilities of the two cleaning rollers can be further improved, and the cleaning effect can be improved.

[0147] Specifically, in the embodiment of the present application, the axis of the first cleaning roller 20 and the axis of the second cleaning roller 30 are symmetrically arranged with respect to the central plane. The dirt scraping structure 40 has a first dirt scraping arm 401 extending from the central plane towards the first cleaning roller 20. The first dirt scraping arm 401 has a first dirt scraping contact part 48. The dirt scraping structure 40 also has a second dirt scraping arm 402 extending from the central plane towards the second cleaning roller 30. The second dirt scraping arm 402 has a second dirt scraping contact part 49. Among them, the length of the first dirt scraping arm 401 is less than the length of the second dirt scraping arm 402.

[0148] It should be noted that when the dirt scraping structure 40 includes a first dirt scraping member 41 and a second dirt scraping member 42, the first dirt scraping member 41 has a first dirt scraping arm 401, and the second dirt scraping member 42 has a second dirt scraping arm 402.

[0149] In this way, since the length of the first dirt scraping arm 401 is less than the length of the second dirt scraping arm 402, the second dirt scraping contact part 49 of the second dirt scraping arm 402 is closer to the second cleaning roller 30, that is, the radial distance between the second dirt scraping contact part 49 and the central axis of the second cleaning roller 30 is less than the radial distance between the first dirt scraping contact part 48 and the central axis of the first cleaning roller 20. This method can more simply achieve an interference fit and improve the reliability of the interference fit.

[0150] In another embodiment of the present application, the cleaning mechanism 100 further includes a water circuit board 70. The water circuit board 70 is arranged on the mounting seat 10 and is used to guide water to the first cleaning roller 20 and the second cleaning roller 30. Among them, the average amount of water provided by the water circuit board 70 to the first cleaning roller 20 per unit time is greater than the average amount of water provided by the water circuit board 70 to the second cleaning roller 30 per unit time.

[0151] By providing the water circuit board 70, the water flow can be guided to the first cleaning roller 20 and the second cleaning roller 30, thereby realizing the wetting of the first cleaning roller 20 and the second cleaning roller 30. Specifically, the water circuit board 70 is provided with a first water outlet part and a second water outlet part. The first water outlet part discharges water towards the first cleaning roller 20, and the second water outlet part discharges water towards the second cleaning roller 30. The first water outlet part and the second water outlet part can be spray heads or spray ports, etc.

[0152] The cleaning mechanism 100 may also have a clean water tank and a water pump. The clean water tank pumps clean water to the water circuit board 70 by the power provided by the water pump.

[0153] When the average amount of water supplied by the water channel plate 70 to the first cleaning roller 20 per unit time is greater than the average amount of water supplied by the water channel plate 70 to the second cleaning roller 30 per unit time, the first cleaning roller 20 will receive more water. Therefore, the surface humidity of the first cleaning roller 20 is higher than that of the second cleaning roller 30. The second cleaning roller 30 can absorb the water on the surface to be cleaned outside, so the first cleaning roller 20 can wet the surface to be cleaned by rotation, while the second cleaning roller 30 can wipe the wetted surface to be cleaned by rotation, further improving the stain removal ability of the surface to be cleaned.

[0154] Preferably, the ratio range of the average amount of water supplied by the water channel plate 70 to the first cleaning roller 20 per unit time to the average amount of water supplied by the water channel plate 70 to the second cleaning roller 30 per unit time is 1.5:1 to 3:1. It has been found through research that within this range, the corresponding cleaning capabilities of the two cleaning rollers can be further improved, and the cleaning effect can be enhanced.

[0155] In another embodiment of the present application, the water absorption rate of the first cleaning roller 20 is less than that of the second cleaning roller 30.

[0156] The water absorption rate refers to the water absorption rate of the material. When the water absorption rate of the material used for the first cleaning roller 20 is less than that of the material used for the second cleaning roller 30, the first cleaning roller 20 can store more water compared to the second cleaning roller 30 to achieve the effect of wetting the surface to be cleaned by rotation, while the second cleaning roller 30 has a high water absorption rate and can be drier to achieve the effect of wiping the wetted surface to be cleaned by rotation.

[0157] In the embodiment of the present application, the dirt scraping structure 40 has a first dirt scraping contact surface 481, and the first dirt scraping contact surface 481 is in contact with the first cleaning roller 20 and is tangent to the outer surface of the first cleaning roller 20.

[0158] By providing the first dirt scraping contact surface 481 and making the first dirt scraping contact surface 481 tangent to the outer surface of the first cleaning roller 20, the contact between the first dirt scraping contact surface 481 and the first cleaning roller 20 can be maintained under the rotation of the first cleaning roller 20. This not only increases the contact area but also makes the contact more reliable, thereby improving the dirt scraping effect. In addition, since the first dirt scraping contact surface 481 is in contact with the first cleaning roller 20, during the scraping process, the contact seal between the first dirt scraping contact surface 481 and the first cleaning roller 20 is better, and the scraped sewage is not easily leaked from the mating gap between the first dirt scraping contact surface 481 and the first cleaning roller 20 to the surface to be cleaned, so the cleaning effect is also better.

[0159] Preferably, the width range of the first dirt scraping contact surface 481 is 1 mm to 5 mm.

[0160] The width of the first scraping contact surface 481 referred to herein means the dimension in the tangential direction of the first scraping contact surface 481 and the first cleaning roller 20. Through research, it is found that when the width range of the first scraping contact surface 481 is 1 mm to 5 mm, it can ensure sufficient contact area between the two to ensure the scraping effect, and will not cause too much resistance to affect the normal rotation of the first cleaning roller 20.

[0161] In some other embodiments, the scraping structure 40 has a second scraping contact surface 491, the second scraping contact surface 491 is in contact with the second cleaning roller 30, and is tangent to the outer surface of the second cleaning roller 30.

[0162] By providing the second scraping contact surface 491 and making the second scraping contact surface 491 tangent to the outer surface of the second cleaning roller 30, it can always maintain the contact between the second scraping contact surface 491 and the second cleaning roller 30 under the rotation of the second cleaning roller 30, which not only increases the contact area, but also makes the contact more reliable, thereby improving the scraping effect. In addition, since the second scraping contact surface 491 is in contact with the second cleaning roller 30, during the scraping process, the contact sealing between the second scraping contact surface 491 and the second cleaning roller 30 is better, so that the scraped sewage is not easily leaked from the mating gap between the second scraping contact surface 491 and the second cleaning roller 30 to the surface to be cleaned, thus making the cleaning effect better.

[0163] Preferably, the width range of the second scraping contact surface 491 is 1 mm to 5 mm.

[0164] The width of the second scraping contact surface 491 referred to herein means the dimension in the tangential direction of the second scraping contact surface 491 and the second cleaning roller 30. Through research, it is found that when the width range of the second scraping contact surface 491 is 1 mm to 5 mm, it can ensure sufficient contact area between the two to ensure the scraping effect, and will not cause too much resistance to affect the normal rotation of the second cleaning roller 30.

[0165] In other embodiments, the first scraping contact surface 481 is in contact with the first cleaning roller 20, and is tangent to the outer surface of the first cleaning roller 20; the second scraping contact surface 491 is in contact with the second cleaning roller 30, and is tangent to the outer surface of the second cleaning roller 30.

[0166] In some embodiments, the scraping structure 40 further has a first transition inclined surface 403, the first transition inclined surface 403 is adjacent to the first scraping contact surface 481, and is located on the downstream side of the first scraping contact surface 481 along the forward and reverse rotation directions of the first cleaning roller 20, and the first transition inclined surface 403 and the first scraping contact surface 481 are arranged at an angle.

[0167] When the first cleaning roller 20 rotates in reverse, since the first transition slope 403 is located on the downstream side of the first scraping contact surface 481 along the forward rotation direction of the first cleaning roller 20, the first transition slope 403 can guide the first scraping contact surface 481 to squeeze the hairs on the surface of the first cleaning roller 20, reducing the extrusion resistance. Moreover, the reverse rotation of the first cleaning roller 20 can scrape off the dirt inside the first cleaning roller 20, and can also make the hairs flattened during forward rotation more fluffy, which is more conducive to drying. Specifically, the forward rotation direction of the first cleaning roller 20 is clockwise, and the reverse rotation direction of the first cleaning roller 20 is counterclockwise.

[0168] In some embodiments, the scraping structure 40 further has a second transition slope 404. The second transition slope 404 is adjacent to the first scraping contact surface 481 and is located on the upstream side of the first scraping contact surface 481 along the reverse direction of the forward rotation of the first cleaning roller 20. The second transition slope 404 and the first scraping contact surface 481 are arranged at an angle.

[0169] When the first cleaning roller 20 rotates in the forward direction, since the second transition slope 404 is located on the upstream side of the first scraping contact surface 481 along the forward rotation direction of the first cleaning roller 20, the second transition slope 404 can guide the first scraping contact surface 481 to squeeze the hairs on the surface of the first cleaning roller 20, reducing the extrusion resistance and making the scraping smooth.

[0170] Preferably, there is a first included angle α1 between the first transition slope 403 and the first scraping contact surface 481, and the range of the first included angle α1 is 20 degrees to 60 degrees. There is a second included angle between the second transition slope 404 and the first scraping contact surface 481, and the range of the second included angle is 20 degrees to 60 degrees. It has been found through research that within this range, the scraping structure 40 can scrape the surface of the first cleaning roller 20 more smoothly, and the scraping effect is better.

[0171] In some embodiments, the scraping structure 40 further has a third transition slope 405. The third transition slope 405 is adjacent to the second scraping contact surface 491 and is located on the downstream side of the second scraping contact surface 491 along the reverse direction of the forward rotation of the second cleaning roller 30. The third transition slope 405 and the second scraping contact surface 491 are arranged at an angle.

[0172] When the second cleaning roller 30 rotates in reverse and the third transition slope 405 is located on the downstream side of the second scraping contact surface 491 along the forward rotation direction of the second cleaning roller 30, the third transition slope 405 can guide the second scraping contact surface 491 to squeeze the hairs on the surface of the second cleaning roller 30, reducing the extrusion resistance. Moreover, the reverse rotation of the second cleaning roller 30 can scrape off the dirt inside the second cleaning roller 30, and can also make the hairs flattened during forward rotation more fluffy, which is more conducive to drying. Specifically, the forward rotation direction of the second cleaning roller 30 is counterclockwise, and the reverse rotation direction of the second cleaning roller 30 is clockwise.

[0173] In some embodiments, the scraping structure 40 further has a fourth transition slope 406, which is adjacent to the first scraping contact surface 481 and is located on the upstream side of the first scraping contact surface 481 along the forward rotation direction of the first cleaning roller 20. The fourth transition slope 406 and the first scraping contact surface 481 are arranged at an angle to each other.

[0174] When the second cleaning roller 30 rotates in the forward direction, since the fourth transition slope 406 is located on the upstream side of the second scraping contact surface 491 along the forward rotation direction of the second cleaning roller 30, the fourth transition slope 406 can guide the second scraping contact surface 491 to squeeze the hairs on the surface of the second cleaning roller 30, reducing the squeezing resistance.

[0175] Preferably, there is a third included angle α3 between the second transition slope 404 and the second scraping contact surface 491, and the range of the third included angle α3 is 20 degrees to 60 degrees. Through research, it is found that within this range, the scraping structure 40 can scrape the surface of the second cleaning roller 30 more smoothly, and the scraping effect is better.

[0176] It should be understood here that the forward rotation direction of the first cleaning roller 20 refers to the rotation direction of the first cleaning roller 20 when it normally cleans the surface to be cleaned. The reverse rotation direction of the first cleaning roller 20 is opposite to the forward rotation direction. When the first cleaning roller 20 is in the reverse rotation direction, the first cleaning roller 20 may not clean the surface to be cleaned. Similarly, the forward rotation direction of the second cleaning roller 30 refers to the rotation direction of the second cleaning roller 30 when it normally cleans the surface to be cleaned. The reverse rotation direction of the second cleaning roller 30 is opposite to the forward rotation direction. When the second cleaning roller 30 is in the reverse rotation direction, the second cleaning roller 30 may not clean the surface to be cleaned. The forward and reverse rotation directions of the first cleaning roller 20 and the second cleaning roller 30 may be the same or opposite.

[0177] In the embodiments of the present application, the scraping structure 40 is provided between the first cleaning roller 20 and the second cleaning roller 30, and the forward and reverse rotation directions of the first cleaning roller 20 and the second cleaning roller 30 are opposite. From the attached Figure 3It can be seen that the forward rotation direction of the first cleaning roller 20 is clockwise, and the forward rotation direction of the second cleaning roller 30 is counterclockwise. When the sewage scraping structure 40 is disposed between the first cleaning roller 20 and the second cleaning roller 30, the sewage scraping contact surfaces of the sewage scraping structure 40 in contact with the first cleaning roller 20 and the second cleaning roller 30 are both disposed between the first cleaning roller 20 and the second cleaning roller 30. Therefore, by setting the forward rotation direction of the first cleaning roller 20 to be clockwise and the forward rotation direction of the second cleaning roller 30 to be counterclockwise, sewage, excess water, or other impurities can be scraped off below the sewage scraping structure 40. At this time, the scraped sewage, excess water, or other impurities can be directly led from the sewage scraping structure 40 to the sewage receiving member below under the action of gravity, reducing the risk of the scraped sewage, excess water, or other impurities leaking from the sewage scraping structure 40 to the cleaned surface.

[0178] Based on the same inventive concept, the present application further provides a cleaning device, including a cleaning main body and the cleaning mechanism 100 in any of the above embodiments. The cleaning mechanism 100 is installed on the cleaning main body.

[0179] The cleaning main body may include a housing and a controller, etc., and may also include structures such as a clean water tank, a sewage tank, and a water pump.

[0180] Specifically, the cleaning device may be a cleaning robot, or a handheld floor washer, a handheld floor mopping machine, etc.

[0181] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0182] The above embodiments only represent several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A cleaning mechanism, characterized in that, Comprising: A mounting base; A first cleaning roller and a second cleaning roller, both rotatably mounted on the mounting base about their respective axes and spaced apart from each other in the cleaning direction; A dirt scraping structure provided on the mounting base; and An elastic structure provided between the mounting base and the dirt scraping structure in the vertical direction for providing an elastic force to keep the dirt scraping structure in contact with the first cleaning roller and the second cleaning roller; One of the dirt scraping structure and the mounting base is provided with a guiding groove, and the other is provided with a guiding protrusion. One end of the elastic structure is positioned in the guiding groove, and the other end of the elastic structure is sleeved on the guiding protrusion.

2. The cleaning mechanism according to claim 1, characterized in that, The dirt scraping structure is configured as a whole.

3. The cleaning mechanism according to claim 2, wherein The dirt scraping structure has a first central axis parallel to a first direction; wherein, the first direction is parallel to the axis direction of the first cleaning roller or the second cleaning roller; The elastic structure is provided on the first central axis; or The elastic structure is symmetrically distributed relative to the first central axis.

4. The cleaning mechanism according to claim 1, characterized in that, The dirt scraping structure includes a first dirt scraping member and a second dirt scraping member, and the elastic structure includes a first elastic member and a second elastic member. The first elastic member is provided between the mounting base and the first dirt scraping member in the vertical direction for providing an elastic force to keep the first dirt scraping member in contact with the first cleaning roller, and the second elastic member is provided between the mounting base and the second dirt scraping member in the vertical direction for providing an elastic force to keep the second dirt scraping member in contact with the second cleaning roller.

5. The cleaning mechanism according to claim 4, wherein The first dirt scraping member has a second central axis parallel to the first direction, and the first elastic member is provided on the second central axis; and / or The second dirt scraping member has a third central axis parallel to the first direction, and the second elastic member is provided on the third central axis.

6. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, The guiding protrusion protrudes into the guiding groove.

7. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, The elastic force exerted by the elastic structure on the dirt scraping structure ranges from 5 Newtons to 25 Newtons.

8. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, In the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the dirt scraping structure has a first dirt scraping contact portion and a second dirt scraping contact portion. The first dirt scraping contact portion has an interference fit with the first cleaning roller, and the second dirt scraping contact portion has an interference fit with the second cleaning roller; The interference amount between the first dirt scraping contact portion and the first cleaning roller is X1, and the interference amount between the second dirt scraping contact portion and the second cleaning roller is X2, wherein, X1 < X2.

9. The cleaning mechanism according to claim 8, characterized in that, 0.2 millimeters ≤ X2 - X1 ≤ 1 millimeter.

10. The cleaning mechanism according to claim 8, wherein, The axes of the first cleaning roller and the second cleaning roller are symmetrically arranged relative to a central plane. The dirt scraping structure has a first dirt scraping arm extending from the central plane to the first cleaning roller, and the first dirt scraping arm has the first dirt scraping contact portion. The dirt scraping structure has a second dirt scraping arm extending from the central plane to the second cleaning roller, and the second dirt scraping arm has the second dirt scraping contact portion; wherein, the length of the first dirt scraping arm is less than the length of the second dirt scraping arm.

11. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, Along the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the cleaning mechanism further includes a water channel plate, which is arranged on the mounting seat and is used to guide water to the first cleaning roller and the second cleaning roller; Wherein, the average amount of water provided by the water channel plate to the first cleaning roller per unit time is greater than the average amount of water provided by the water channel plate to the second cleaning roller per unit time.

12. The cleaning mechanism according to claim 11, wherein, The ratio range of the average amount of water provided by the water channel plate to the first cleaning roller per unit time to the average amount of water provided by the water channel plate to the second cleaning roller per unit time is: 1.5:1 to 3:

1.

13. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, Along the cleaning direction, the first cleaning roller is located in front of the second cleaning roller; the water absorption rate of the first cleaning roller is less than the water absorption rate of the second cleaning roller.

14. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, The dirt scraping structure has a first dirt scraping contact surface, which is in contact with the first cleaning roller and is tangent to the outer surface of the first cleaning roller; and / or The dirt scraping structure has a second dirt scraping contact surface, which is in contact with the second cleaning roller and is tangent to the outer surface of the second cleaning roller.

15. The cleaning mechanism according to claim 14, characterized in that, The width range of the first dirt scraping contact surface is 1 mm to 5 mm; and / or The width range of the second dirt scraping contact surface is 1 mm to 5 mm.

16. The cleaning mechanism according to claim 14, wherein, The dirt scraping structure further has a first transition slope, which is adjacent to the first dirt scraping contact surface and is located on the downstream side of the first dirt scraping contact surface along the forward rotation direction of the first cleaning roller, and the first transition slope and the first dirt scraping contact surface are arranged at an angle; and / or The dirt scraping structure further has a third transition slope, which is adjacent to the second dirt scraping contact surface and is located on the downstream side of the second dirt scraping contact surface along the forward rotation direction of the second cleaning roller, and the third transition slope and the second dirt scraping contact surface are arranged at an angle.

17. The cleaning mechanism according to claim 16, wherein There is a first angle between the first transition slope and the first dirt scraping contact surface, and the range of the first angle is 20 degrees to 60 degrees; and / or There is a third angle between the third transition slope and the second dirt scraping contact surface, and the range of the third angle is 20 degrees to 60 degrees.

18. The cleaning mechanism according to any one of claims 1 to 5, characterized in that, The cleaning mechanism further includes an anti - detachment limiting member, which is connected to the mounting seat, and the dirt scraping structure is limited between the anti - detachment limiting member and the mounting seat.

19. A cleaning device, characterized in that, It includes a cleaning main body and the cleaning mechanism according to any one of claims 1 to 18, and the cleaning mechanism is installed on the cleaning main body.

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