Surface cleaning device capable of peeling off winding material

Abstract

The present invention discloses a surface cleaning device capable of peeling off entangled objects, comprising a floor brush equipped with a roller brush, wherein the floor brush is provided with a comb tooth part and a scraping part, wherein the comb tooth part and the scraping part are both in contact with the roller brush, wherein the comb tooth part comprises a first end and a second end located between the scraping part and the first end, wherein the deformation amount of the scraping part in contact with the roller brush is greater than that of the first end and the second end, and the deformation amount of the second end in contact with the roller brush is less than that of the first end. By adopting the technical solution, pressure release can be formed at the second end, so that the entangled objects passing over the first end release pressure at the second end and are peeled off by the scraping part.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning appliances, and specifically provides a surface cleaning device capable of peeling off a winding object. Background Art

[0002] With the development of surface cleaning technology, surface cleaning equipment has gradually entered people's home life and become a common appliance for cleaning floors. Surface cleaning equipment generally includes a body and a floor brush. The floor brush is provided with a roller brush as a cleaning part, and the friction between the roller and the floor achieves cleaning. In the process of the cleaning part cleaning the floor, it is necessary to use a scraping part to synchronously scrape the sewage and adhered dirt on the cleaning part. The surface of the cleaning part is easily entangled with foreign objects such as hair and thread ends. In order to clean the foreign objects entangled on the cleaning roller, some floor brushes are also provided with comb teeth, and the foreign objects on the cleaning roller are scraped off by the comb teeth.

[0003] For example, the prior art with application number CN201711481216.4 discloses a comb tooth structure, in which the comb teeth extend into the cleaning roller and are set at an angled front edge, through which the entanglements on the rotating cleaning roller are removed. On the one hand, because the roller brush rotates at a relatively fast speed, some entanglements may not be removed by the comb teeth in the first time because they are too tightly attached to the outer surface of the roller brush, causing the entanglements to continue to rotate under the drive of the roller brush. Once the entanglements pass over the comb teeth and wrap around the roller brush for a circle, it is difficult to remove the entanglements from the surface of the roller brush, and these entanglements will become tighter and tighter, which not only affects the subsequent cleaning effect of the roller brush, but also requires the user to manually clean the entanglements, which is inconvenient to use. On the other hand, the extension line of the front edge of the comb teeth is close to the rotation center of the cleaning roller, so that the comb teeth have a relatively large rotation resistance to the cleaning roller, affecting the life of the driving motor of the cleaning roller. Summary of the invention

[0004] The purpose of the present invention is to provide a surface cleaning device that at least partially solves the above technical problems. The present invention mainly adds a scraping member that abuts against the comb teeth on the basis of the existing comb teeth for the first-level peeling of the entangled objects, and the two cooperate to form a second-level peeling structure, so that the entangled objects that cannot be removed by the first-level peeling structure can be scraped off under the action of the second-level peeling structure, thereby improving the peeling effect of the entangled objects.

[0005] The surface cleaning device provided by the present invention comprises a floor brush installed with a roller brush, wherein the floor brush is provided with a comb tooth part and a scraping part, wherein the comb tooth part and the scraping part are both in contact with the roller brush, wherein the comb tooth part comprises a first end and a second end located between the scraping part and the first end, wherein the deformation amount of the scraping part in contact with the roller brush is greater than that of the first end and the second end, and the deformation amount of the second end in contact with the roller brush is less than that of the first end, so that the entangled object releases the pressure at the second end and is peeled off by the scraping part.

[0006] Furthermore, tooth grooves are provided between adjacent comb teeth, and the tooth grooves extend to the lower surface of the scraping member. The comb teeth include front tooth surfaces abutting against the roller brush, and the first end and the second end are formed on the front tooth surfaces.

[0007] Furthermore, the comb tooth member includes a connecting portion extending from the comb teeth to the lower surface of the scraper member, the comb teeth and the connecting portion form a combing surface abutting against the roller brush, and the first end and the second end form the combing surface.

[0008] Furthermore, the comb teeth include a front tooth surface, and the front tooth surface forms the first end.

[0009] Furthermore, the connecting portion includes a guide surface, and the guide surface forms the second end.

[0010] Furthermore, the front tooth surface is inclined to extend toward the roller brush, and the roller brush includes a roller shaft and a cleaning member, and the front tooth surface and its extended surface are separated from the outer surface of the roller shaft.

[0011] Furthermore, the front combing surface extends obliquely toward the roller brush, the roller brush comprises a roller shaft and a cleaning member, and the combing surface and its extended surface are separated from the outer surface of the roller shaft.

[0012] Furthermore, the angle between the front tooth surface or the front combing surface and the horizontal plane is 70°≤γ<90°.

[0013] Furthermore, the floor brush is also provided with a sewage suction port connected to the fan, and the comb teeth extend downward to at least partially cover the sewage suction port.

[0014] Furthermore, the comb teeth include through sections, and gaps are provided between the through sections to form a slit effect area between the sewage suction port and the roller brush.

[0015] In the surface cleaning device using the technical solution of the present invention, when the roller brush rotates, the cleaning member first contacts the first end of the front surface, and the first end passes through, and the tooth tips of the comb teeth can first peel off most of the hair entanglements on the cleaning member, thereby achieving the first-level peeling. In this process, a small part of the entanglements may not be peeled off by the first level and pass over the first end and pass through the second end. Since the pressure against the bristles of the roller brush at the second end becomes smaller, the deformation of the bristles becomes smaller, and the pressure of the entanglements is released, the entanglements and the roller brush become loose or loose, especially the front end of the entanglements will be separated from the bristles, and it will continue to move upward with the roller brush to the scraping member. Since the deformation of the scraping member abutting the roller brush is greater than the first end and the second end, the scraping member deeply squeezes and scrapes the roller brush, and the scraping member starts to block and peel from the front end of the entanglements to prevent the entanglements from passing over the scraping member, thereby achieving the second-level peeling. That is to say, in this embodiment, the entanglements are peeled off at the first and second levels, which can better prevent the entanglements from passing over the scraping member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the surface cleaning device of the present invention;

[0017] Figure 2 is a schematic diagram of a floor brush of the surface cleaning device;

[0018] Figure 3 yes Figure 2 A cross-sectional view of the floor brush along the AA direction;

[0019] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0020] Figure 5 This is an exploded view of the floor brush structure;

[0021] Figure 6 It is a schematic diagram of the two-stage peeling state of the winding;

[0022] Figure 7 yes Figure 5 Front view of the main body of the middle floor brush;

[0023] Figure 8 yes Figure 7 The enlarged view of point B in the middle;

[0024] Fig. 9 yes Figure 8 Cross-sectional view along CC direction;

[0025] Fig.10 It is a schematic diagram of the path of airflow passing through the slit effect area between the comb teeth;

[0026] Fig.11 Other embodiments of the connecting portion of the comb teeth member;

[0027] Fig.12 is a cross-sectional view of the floor brush structure of the surface device described in the second embodiment;

[0028] Fig.13 is a schematic diagram of the crawler type roller brush structure in the second embodiment;

[0029] Fig.14 It is an enlarged view of the local cross-sectional structure in the second embodiment;

[0030] Fig.15 Fig.13 An enlarged view of the matching part between the middle comb teeth and the scraper;

[0031] Fig.15 , 16 This is another implementation of the comb tooth member in the second embodiment.

[0032] Fig.17It is a schematic diagram of the cross-sectional structure of the floor brush in the third embodiment.

[0033] The figures are as follows:

[0034] 1. Body; 11. Handle; 2. Floor brush; 200. Floor brush main body; 21. Upper body; 22. Lower body; 221. Front side; 222. First convex edge; 223. Second convex edge; 224. Bottom; 23. Accommodating cavity; 24. Sewage suction port; 241. Top; 25. Sewage suction hose; 26. Roller brush cover; 27. Roller brush cavity; 28. Floor scraper; 3. Clean water tank; 4. Roller brush; 40. Roller shaft; 41. Bristles; 42. Base material; 44. First rotating roller; 45. Second rotating roller Moving roller; 46, supporting frame; 5, scraping member; 51, mounting section; 52, suspended section; 521, front end; 6, comb tooth member; 61, comb teeth; 611, through section; 612, guide section; 614, guide groove; 613, slit effect area; 616, front tooth surface; 617, rear tooth surface; 6171, first inclined surface; 6172, second inclined surface; 618, tooth tip; 62, connecting part; 621, drainage surface; 64, fixing part; 7, dirt container; 8, water distribution part; 81, water supply port. DETAILED DESCRIPTION

[0035] Those skilled in the art should understand that the embodiments described below are merely preferred embodiments of the present application, which are merely used to explain the technical principles of the present application and are not used to limit the protection scope of the present application.

[0036] It should be noted that in the description of this application, the terms "center", "upper", "lower", "top", "bottom", "vertical", "horizontal", "inner", "outer" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The cleaning machine of the present application may be a dry vacuuming device or a wet floor washing / mopping device. Specifically, the cleaning machine may be a handheld cleaning machine with a handle and manually operated by a user, such as a handheld floor washer, a handheld floor mopper, etc.; or a cleaning robot with a driving wheel, which can control the driving wheel to move according to a program stored in the robot, and control the cleaning roller to clean the floor. The following further describes the technical solution of the present application by taking a handheld floor washer as an example.

[0039] Embodiment 1:

[0040] As the surface cleaning device of the present invention, Figures 1 to 11 As shown, it includes a floor brush 2 that can move on the ground to be cleaned, and a body 1 hinged to the floor brush 2, wherein the rear portion of the floor brush 2 is pivotally connected to the lower portion of the body 1, and a handle 11 (not shown in the figure) for the user to hold is arranged at the upper end of the body 1, a dirt bucket 7 and a dirt suction fan (not shown in the figure) for sucking dirty liquid and / or dirt into the dirt bucket 7 are arranged on the body 1, and a detachable power source structure is also provided on the body 1, and the dirt suction fan and the battery pack are arranged in the power source structure, and the power source system is arranged above the dirt bucket and on the same side as the dirt bucket, and a dirt suction port 24 is provided on the floor brush 2, and the floor brush 2 includes a floor brush main shell 200 composed of an upper shell 21 and a lower shell 22, and a first flange 222 and a second flange 223 protruding forward are provided on the front side 221 of the lower shell 22, and the dirt suction port 24 is arranged between the first flange 222 and the second flange 223. The upper shell 21 is buckled on the lower shell 22 to form a receiving chamber 23. The front side of the bottom 222 of the lower shell 22 is also provided with a floor scraper 28 arranged downwardly and tilted. The free end of the floor scraper 28 abuts against the floor to be cleaned so as to shovel up the solid and / or liquid mixture on the floor to be cleaned during the cleaning process. In this embodiment, the floor scraper 28 is made of rubber. The sewage suction port 24 is arranged on the front side 221 of the lower shell 22. A sewage suction hose connected to the sewage suction port 24 is arranged in the receiving chamber 23. The sewage suction hose passes upward from the rear side of the receiving chamber 23 and is connected to the sewage bucket 7. The shape of the sewage suction port can be circular or other shapes. In this embodiment, the shape of the sewage suction port is rectangular, with a height of H and a width of B.

[0041] In this embodiment, the floor brush 2 is also provided with a roller brush 4 for cleaning the surface to be cleaned, and a scraper 5 and a comb 6 for cleaning the roller brush 4. The roller brush 4 is provided with a dirt suction port 24, a comb 6, and a scraper 5 in sequence in the direction of rotation of the roller brush, and the comb 6 and the scraper 5 are both in contact with the roller brush. Figure 4In the figure, the rotation direction of the roller brush 4 is in the clockwise R direction indicated by the arc arrow in the figure. The scraping member 5 includes a mounting section 51 and a suspended section 52. In order to improve the scraping effect, the scraping member 5 adopts a metal scraper. The comb tooth member 6 includes a fixing portion 64, comb teeth 61, and a connecting portion 62 connecting the fixing portion and the comb teeth. The mounting section 51 is arranged above the fixing portion 64, the lower surface of the mounting section 51 and the upper surface of the fixing portion 64 are arranged in abutment, the top surface of the connecting portion 62 is at least partially in abutment with the suspended section 52, and the front end 521 of the suspended section 52 protrudes forward from the connecting portion 62. The comb teeth 61 are arranged below the connecting portion 62. The suspended section 52 of the scraping member 5 is tilted downward, the roller brush 4 is arranged at the front side of the floor brush 2, the floor brush 2 includes a floor brush body 200, and the front side of the floor brush body 200 is also provided with a roller brush cover 26 covering the roller brush 4, the roller brush cover 26 is detachably mounted on the floor brush body 200, the floor brush body 200 includes an upper shell 21 and a lower shell 22, the front side surface 221 of the floor brush body 200 and the roller brush cover 26 form a roller brush cavity for installing the roller brush 4. The roller brush 4 includes a roller shaft 40 and a cleaning member, the cleaning member includes a substrate 42 and bristles 41, and the cleaning member can be fixed to the outer surface of the roller shaft by gluing or other means.

[0042] In this embodiment, the comb tooth member 6 includes a first end and a second end located between the scraping member 6 and the first end. The deformation of the scraping member 5 abutting the roller brush is greater than that of the first end and the second end, and the deformation of the second end abutting the roller brush is smaller than that of the first end, so that the entangled object releases pressure at the second end and is peeled off by the scraping member.

[0043] The following is combined with Figure 6 Shown to illustrate the technical effects of this embodiment.

[0044] When the roller brush drives the winding material to rotate, the cleaning member first contacts the first end of the comb tooth member. When the first end passes, the tooth tips of the comb teeth can first peel off most of the hair winding material C1 on the cleaning member, thereby achieving the first-level peeling. In this process, a small part of the winding material C2 may not be peeled off by the first level and pass over the first end and pass through the second end. Since the pressure against the bristles of the roller brush at the second end becomes smaller, the deformation of the bristles becomes smaller, and the pressure of the winding material C2 is released, so that the winding material and the roller brush become loose or loose, especially the front end of the winding material C2 will be separated from the bristles, and it will continue to move upward to the scraping member with the roller brush. Since the deformation of the scraping member against the roller brush is greater than the first end and the second end, the scraping member deeply squeezes and scrapes the roller brush, and the scraping member starts to block and peel from the front end of the winding material C2 to prevent the winding material C2 from passing over the scraping member, thereby achieving the second-level peeling. That is to say, in this embodiment, the winding material is peeled off at the first and second levels, which can better prevent the winding material from passing over the scraping member.

[0045] In order to improve the cleaning effect of the surface to be cleaned, the cleaning part of the roller brush is made of water-absorbing fiber material, and a water-dividing part 8 is also provided above the scraping part 5. The water-dividing part 8 is provided with a water supply port 81 for providing cleaning liquid to the roller brush. The bristles of the roller brush after absorbing water have a better effect of wiping the stains on the surface to be cleaned. The lower surface of the scraping part 5 is at least partially fitted with the upper surface of the comb tooth part 6, and the upper surface of the scraping part is at least partially fitted with the lower surface of the water-dividing part 8. As an improvement, the scraping part and the comb tooth part can be an integral structure. It can be understood that when the roller brush is in a dry state without absorbing water, the bristles of the cleaning part are fluffy. At this time, the roller brush has the largest contour range, and the comb teeth and the scraping part extend into the bristles of the roller brush. When the roller brush is in a water-absorbing state, the bristles of the cleaning part will fall down after scraping the surface to be cleaned or the comb teeth and the scraping part, so that the actual contour range of the roller brush is reduced to a range smaller than the maximum contour range but larger than the contour range of the roller shaft.

[0046] In this embodiment, the plurality of comb teeth 61 on the comb tooth member 6 are arranged at intervals along the axial direction of the roller brush, the comb teeth 61 of the comb tooth member 6 at least partially extend into the bristles 41 of the roller brush 4, the comb teeth 61 include a rear tooth surface 617 away from the roller brush 4, a front tooth surface 616 disposed toward the roller brush, and a tooth tip 618, the front tooth surface 616 extends from the tooth tip 618 of the comb teeth to the lower surface of the scraping member 5, and the tooth grooves between the comb teeth also extend to the lower surface of the scraping member, the first end and the second end are formed on the front tooth surface 616, and the deformation amount of the front tooth surface 616 abutting against the roller brush decreases along the direction from the tooth tip 618 to the scraping member 5. Specifically, the front surface can be a curved surface, a plane, or a combination thereof.

[0047] In order to further improve the removal effect of entanglements, Figure 4 , 8 , the comb teeth 61 extend downward and at least partially block the sewage suction port 24. When the surface cleaning device cleans the surface to be cleaned, the sewage suction fan works, so that the effective area of ​​the sewage suction port becomes smaller. Therefore, compared with the sewage suction port not blocked by the comb teeth, the wind pressure at the sewage suction port partially blocked by the comb teeth increases, and most of the dirty liquid and dirt sucked from the surface to be cleaned to the sewage suction port, as well as entangled objects such as hair, can easily enter the sewage suction port, thereby achieving the first stage of pressurization. Preferably, part of the connecting portion 62 also extends downward to at least partially block the sewage suction port 24, and the lower end of the connecting portion 62 is lower than the upper end of the sewage suction port 24, thereby further increasing the effect of the first stage of pressurization.

[0048] Combined with Figure 8 , 9The comb teeth 61 include a through section 611 and a guide section 612. There is a gap between two adjacent through sections that penetrates the front tooth surface 616 and the rear tooth surface 617. The gap between the two adjacent through sections 611 forms a slit effect area 613 (such as Figure 4 Middle rectangular dotted frame, Figure 8 (in the middle elliptical dotted frame), when the suction fan is working, the wind pressure at the gap increases and the wind speed also increases, while the wind pressure near the suction port not covered by the comb teeth is smaller than here, resulting in an unbalanced airflow at the suction port. The hair and other entanglements, dirt, and dirty liquid in the gap between the comb teeth are smoothly sucked into the suction port at a faster wind speed under the action of the larger wind pressure of the unbalanced airflow, thereby further improving the suction efficiency, thereby realizing the second-stage pressurization, which can better prevent the entanglements from passing over the scraping parts and avoid the accumulation of hair and solid dirt in the gaps between the comb teeth, especially for the stripping and suction of the entanglements, and no dirt or entanglements will remain on the comb teeth, thus bringing a good experience to customers.

[0049] It should be noted that when the liquid flows in the tube, the flow rate increases when passing through a narrow place. When the airflow flows through a narrow terrain on the ground, it is similar to the flow of liquid in a tube, and the flow rate will also increase. Because the gas is compressible, the density will also increase. The effect of this terrain canyon on the airflow is called the "narrow tube effect", also known as the "canyon effect". The slit effect in the present invention is the same as the canyon effect in daily geography. It refers to the wind sucked into the roller brush cavity between the roller brush and the scraper strip of the floor brush. When it moves to the sewage suction port, it encounters the gap between the comb teeth covering the sewage suction port. Due to the narrow gap, the flow rate of the wind passing through the narrow gap is accelerated, and the wind pressure increases. The slit effect area of ​​the present invention refers to the comb teeth partially covering the sewage suction port, and the area formed by the gap between two adjacent comb teeth set corresponding to the sewage suction port. For example, there are 8 comb teeth covering the sewage suction port, and there are 7 comb tooth gaps among the 8 comb teeth. The area formed by these 7 gaps is the slit effect area.

[0050] In order to increase the slit effect area and improve the sewage suction efficiency, at least part of the comb teeth 61 is higher than the sewage suction port. Specifically, the comb teeth 61 are located in front of the sewage suction port 24, the tooth grooves between the comb teeth extend to the lower surface of the scraper, the top of the front tooth surface 616 is higher than the sewage suction port 24, and the front tooth surface 616 extends downward from the outside of the sewage suction port 24 to at least partially cover the sewage suction port 24.

[0051] In order to further improve the suction efficiency of the slit effect area, a dirt passage is also provided between the roller brush and the tooth groove, so that the entangled objects peeled off by the scraping member and the scraped dirty liquid can pass through the dirt passage along the Figure 4The dirt flows downward in the direction of the dotted line indicated by the hollow arrow. As one mode of this embodiment, when the roller brush is in a dry and fluffy state without absorbing water, the bristles contact the bottom surface of the tooth groove to block the dirt passage; when the roller brush is in a water absorbing state, the bristles of the cleaning part will fall down after scraping against the surface to be cleaned or the comb teeth and the scraping part, and the dirt passage between the outer surface of the roller brush and the bottom surface of the tooth groove is opened. As another mode of this embodiment, when the roller brush is in a dry and fluffy state without absorbing water, the bristles do not block the dirt passage.

[0052] like Figure 4 , 6 As shown in FIG. 9 , the comb teeth 61 are inclined downward relative to the horizontal plane and extend toward one side of the roller brush 4. The angle between the comb teeth 61 and the horizontal plane is not less than 60°. In this embodiment, the longitudinal section of the comb teeth is a triangle. The comb teeth 61 have a front tooth surface 616 and a rear tooth surface 617 that are inclined downward. The front tooth surface 616 and its extension surface JK are separated from the outer surface of the roller shaft. Figure 4 As shown, the front surface or the extension surface JK of the front tooth surface of the comb tooth member 6 deviates from the outer surface of the roller shaft, so that the extension surface only passes through the bristle area. In this way, not only can the length of the comb teeth within the maximum contour range of the roller brush be longer when the distance between the tooth tip of the comb teeth and the rotation center axis of the roller brush is constant, the contact area between the comb teeth and the comb bristles is larger, and the change of the extrusion force between the front tooth surface and the roller brush is relatively continuous, the pressure release is relatively stable, and the stripping effect of the winding on the roller brush is better. In addition, no obvious tooth marks will be produced on the substrate, and the movement resistance of the comb teeth to the roller brush is not large, which improves the life of the driving motor of the bristles and the roller brush. In addition, the length of the comb teeth covering the suction port is also sufficient, and it is easier to produce a slit effect, which is not only conducive to the surface cleaning device to suck away larger garbage from the surface to be cleaned, but also a strong slit effect can be formed at the place where the comb teeth cover the suction port, thereby generating a strong suction force, and the cleaning and suction effect of a small part of the dirt or dirty liquid or winding scraped off by the comb teeth and the scraping member is also better.

[0053] Specifically, the angle γ of the front tooth surface 616 tilted downward along the top 241 of the sewage suction port 24 is 70°≤γ<90°, so that the position of the tooth tip of the comb teeth tangent to the base material of the roller brush is reasonable, and the length of the comb teeth that can be inserted into the bristles of the base material is reasonable, so that the comb teeth can effectively peel off the hair and other entanglements on the roller brush, and will not conflict with the base material too much or even form tooth marks, which will affect the life of the roller brush. The rear tooth surface 617 is tilted downward along the connecting portion 62, and the rear tooth surface is tilted away from the roller brush. The extended surface of the rear tooth surface intersects or is tangent to the outer surface of the roller shaft, making it easier and more difficult for the dirty liquid and dirt to move smoothly to the vicinity of the sewage suction port, and the guiding effect is good.

[0054] In this embodiment, the floor scraper strip 28 is located below the sewage suction port 24 and forms a sewage suction nozzle 29 between the floor scraper strip 28 and the roller brush 4. The comb teeth are provided with a guide portion facing the sewage suction nozzle. By providing the guide portion, the retention and adhesion of dirty liquid and dirt at the sewage suction port are reduced. Most of the dirty liquid and dirt can enter the sewage suction port more effectively, quickly and smoothly after moving to the sewage suction port blocked by the comb teeth, and then continue to be sent upward to the sewage storage bucket, thereby improving the sewage suction efficiency. Specifically, the comb teeth 61 include a rear tooth surface 617 facing away from the roller brush 4 and a front tooth surface 616 facing the roller brush. The front tooth surface and the rear tooth surface extend obliquely downward from the connecting portion and converge at the tooth tip. The rear tooth surface 617 is inclined toward the sewage suction port 24 and forms the guide portion. As an improvement on the rear tooth surface 617, the rear tooth surface 617 of the comb tooth 61 is formed by connecting a first inclined surface 6171 and a second inclined surface 6172. The first inclined surface 6171 is connected to the connecting portion 62. The inclination angle of the first inclined surface 6171 is β, wherein γ≤β≤90°. Here, the inclination angle β of the first inclined surface 6171 is greater than or equal to the inclination angle of the front tooth surface 616, and the maximum is 90°. The angle between the second inclined surface 6172 and the horizontal plane is θ, so the inclination angle of the second inclined surface is θ, and the inclination angle θ of the second inclined surface 6171 satisfies 30°≤θ≤35°. In this embodiment, the inclination angle of the rear tooth surface 617 refers to the inclination angle θ of the second inclined surface 6172. Therefore, under the guidance of the inclination angle θ of the second inclined surface 6172, it is easier and more difficult for the dirty liquid and dirt to move smoothly to the vicinity of the suction port. This angle just meets the angle formed by the suction hose passing through the accommodating chamber from the suction port and connecting with the suction pipe on the sewage bucket from the rear part of the accommodating chamber upward, so the guiding effect is good. The first inclined surface 6171 plays a good blocking and diverting role when the liquid flow after passing over the comb teeth 61 is large and flows back, especially for the liquid flow that is squeezed and surges up after entering the space between the comb teeth and the sewage suction port along the first inclined surface, it has a good blocking and diverting effect, so that the liquid flow flushes the back of the comb teeth and then turns to the sewage suction port again. The setting of the first inclined surface and the second inclined surface provides a buffer and diverting space for the liquid flow, so that the dirty liquid and dirt can enter the sewage suction port more smoothly and move along the sewage suction port and the sewage suction hose to the sewage suction pipe and enter the sewage storage bucket, which not only improves the suction efficiency, but also improves the sewage suction effect. In this embodiment, the inclination angle γ of the front tooth surface is 84°, the inclination angle θ of the second inclined surface is 33°, and the inclination angle β of the first inclined surface is 90°.

[0055] Combination Figure 4 , 89. The comb teeth 61 are protruding downward from the connecting portion 62, and the longitudinal section of the comb teeth is triangular or approximately triangular. A guide groove 614 is also provided between the two adjacent guide sections 612, and the guide groove 614 is provided on the connecting portion. The guide sections 612 are connected as a whole through the connecting portion, that is, a guide groove 614 is provided on the connecting portion 62 between the two adjacent guide sections 612, and the guide groove 614 extends upward to the lower surface of the scraping section 5, that is, the guide groove 614 extends from the lower end of the connecting portion 62 to the top of the connecting portion 62. Therefore, the comb teeth 61 extend upward along the front surface of the connecting portion 62 to the top of the connecting portion, and the thickness of the comb teeth gradually decreases to be flush with the front end of the connecting portion. The guide groove 614 is the tooth groove of the two adjacent comb teeth 61, and the section from the bottom end of the connecting portion 62 to the tooth tip 618 is the through section. The guide groove 614 is arranged corresponding to the gap 613 of the through section 611. The scraper 5 includes a mounting section 51 and a suspended section 52. The mounting section 51 is arranged above the fixing portion 64, and the lower surface of the mounting section 51 and the upper surface of the fixing portion 64 are fitted together. The top surface of the connecting portion 62 is at least partially fitted with the suspended section 52, and the front end 521 of the suspended section 52 protrudes forward from the connecting portion 62. A water diversion member 9 is arranged above the scraper 5, and the mounting section 51 and the fixing portion 64 of the scraper 5 are fitted and clamped between the first convex edge 223 and the lower surface of the water diversion member 9.

[0056] Combination Figure 4 , 89. The width of the comb teeth 61 is b, 1.4mm≤b≤1.6mm, and the tooth width is reasonable, which not only ensures the contact area between the comb teeth and the cleaning member, but also ensures that the dirt or hair entanglements on the cleaning member are peeled off without being left behind. The distance between the gaps 613 between two adjacent comb teeth 61, that is, the spacing, is L, that is, the groove width of the tooth groove and the distance of the gap, that is, the spacing L, are equal, wherein b>L, and the spacing L satisfies 0.7mm≤L<1.5mm, which ensures that the gap between the through sections of the comb teeth covering the sewage suction port is reasonable, and also ensures the area of ​​the slit effect area, and ensures that sufficient wind pressure can be generated here to enhance the suction force, and the suction force generated is sufficient to be greater than the adhesion of dirt or entanglements or dirty liquid, and the clamping force of entanglements or larger particles clamped in the spacing between the two comb teeth, so as to facilitate the dirt to smoothly pass through the gap between the comb teeth into the sewage suction port. The height of the through section 611 covering the sewage suction port 24 is h, wherein 0.7mm<h≤3.5mm, which ensures that the length of the through section covering the comb teeth at the sewage suction port is sufficient to increase the wind pressure of the through section covering the sewage suction port, so that the suction force generated by the increased wind pressure is sufficient to resist the adhesion of dirt or entangled objects or dirty liquid in the gap, and the clamping force of entangled objects or larger particles clamped in the distance between two comb teeth, thereby making it easier for dirt to pass through the gap between the comb teeth and enter the sewage suction port. In this embodiment, L=1.2mm, h=3mm. The comb teeth formed by this scheme have a reasonable length. The point where the tooth tip 618 is tangent to the substrate 42 of the roller brush 4 is also slightly farther from the rotation center axis of the roller brush, that is, the tooth tip of the comb teeth can contact the substrate earlier, and the stripping effect on the entanglement on the roller brush is better. The comb teeth extend into the bristles for a long time, and the contact area between the comb teeth and the bristles is large. No obvious tooth marks will be produced on the substrate, and the comb teeth will not pose much resistance to the movement of the roller brush. In addition, the length of the comb teeth covering the suction port is sufficient, which makes it easier to produce a slit effect. It is not only beneficial for the surface cleaning device to suck away larger garbage from the surface to be cleaned, but also a strong slit effect can be formed at the place where the comb teeth cover the suction port, thereby generating a strong suction force, and the cleaning and suction effect of a small part of the dirt or dirty liquid or entanglement scraped off by the comb teeth and the scraping member is also better.

[0057] The tooth thickness of the comb teeth gradually decreases from bottom to top, and the tooth groove gradually becomes shallower from top to bottom, which enhances the diversion effect, and at the same time allows the comb teeth to better extend into the comb hair and generate less resistance to the movement of the roller brush, and ensures that the tooth groove close to the scraper is shallower. Since the water pressure and negative pressure here are the smallest, the tooth groove is shallow, and the space for dirty liquid or dirt to remain is small, so a large amount of dirt or dirty liquid will not remain here. The bottom surface of the tooth groove is an arc surface, and the center of the arc surface is located on the side where the roller brush is located. With such a structure, the diversion effect is better, so that the dirty liquid or dirt runs more smoothly in the tooth groove, and the probability of accumulation is reduced.

[0058] In addition, an acute angle α is formed between the suspended portion 52 of the scraper 5 and the front tooth surface 616. By setting the angle α between the suspended portion and the front tooth surface to an acute angle, the suspended portion can better apply the peeling force to the front end of the winding in the pressure release area when the front tooth surface and the roller brush maintain a certain angle, and better prevent the winding from passing over the scraper, thereby achieving the second level of peeling. Specifically, the extension surface of the suspended portion is also set to pass through the center of the roller brush.

[0059] In this embodiment, the mounting section 51 is arranged above the central axis of the roller brush 4, and a transition section 53 is further arranged between the mounting section 51 and the suspended section 52. The suspended section 52 is arranged downwardly tilted along the diameter of the roller brush 4 and contacts the substrate, so that the transition section 53 smoothly connects the mounting section 51 and the suspended section 52, and the fixing portion 63 of the comb tooth member 6 is arranged in close contact with the mounting section. The suspended section 52 is at least partially arranged above the comb teeth 61, and the front end 521 of the suspended section 52 of the scraping member 5 is located in front of the tooth tip 618 of the through section 611. Since the comb teeth 61 and the guide groove 614 extend upward to the scraping member 5, the front surface of the comb tooth member 6 includes the front tooth surface 616 of the comb teeth 61 and the guide groove 614. Therefore, the front tooth surface 616 of the comb teeth, the guide groove 614, the lower surface of the scraping section 5 and the outer surface of the roller brush 4 in this embodiment form a suction negative pressure area 500.

[0060] The entire working process of the technical solution of the present invention is explained below in combination with the above-mentioned contents.

[0061] When the surface cleaning device is cleaning, the clean water tank supplies water to the roller brush or the surface to be cleaned, the water enters the water supply port on the floor brush from the water dividing piece, and flows out to the roller brush through the water supply port, the roller brush is wetted, and the roller brush rotates to clean the surface to be cleaned, and at the same time the dirt suction fan is started, the floor scraper strip scoops up the dirt and dirty liquid on the surface to be cleaned, and under the influence of the rotation of the roller brush, the gap between the floor scraper strip and the roller brush forms a dirt suction nozzle, and under the influence of the rotation of the roller brush, the scooped dirt and dirty liquid are sucked into the suction nozzle, and the mixed dirt behind the suction nozzle is discharged. Under the guidance of the inclined rear tooth surface of the comb teeth and after the first stage of pressurization, it moves toward the sewage suction port and enters the sewage suction port. At this time, a part of the dirty liquid and dirt is absorbed by the bristles or driven to move upward with the roller brush. The comb teeth extending into the bristles of the roller brush first realize the first stage of peeling off the entangled materials at the tooth tip, and the dirt, hair and other entangled materials on the roller brush are peeled off and scraped off the roller brush. The roller brush continues to rotate through the slit effect area, and under the action of the sewage suction fan, the second stage of pressurization is performed to remove the entangled materials, and most of the entangled materials can be sucked away. The roller brush then carries a small part of the uncleaned entangled materials and rotates to the scraping member, and the entangled materials are peeled off at the second end and the scraping member in the second stage. Such a surface cleaning device can clean the dirt, dirty liquid, hair and other entangled materials on the surface to be cleaned more cleanly, and at the same time, the roller brush can also be cleaner, so that each time the roller brush contacts the surface to be cleaned, it is also cleaner, and no secondary pollution will be generated. The structure of the comb teeth cooperates with the scraping member to effectively peel off the hair and other entangled materials, thereby avoiding the hair and other entangled materials from being entangled on the roller brush. At the same time, the suction effect of the hair and other entangled materials is significantly improved, and the dirt suction efficiency is high, thereby greatly improving the overall cleaning effect of the surface cleaning device and improving the cleaning efficiency.

[0062] In this embodiment, the sewage suction fan and the battery pack are installed in a shell to form an independent power source, and the power source is detachably mounted on the fuselage. The shell of the power source is provided with an air inlet duct and an air outlet duct corresponding to the sewage suction fan. The air inlet duct is connected with a sewage bucket on the fuselage. The sewage bucket is detachably mounted on the fuselage. A limiting surface for limiting the barrel wall of the sewage bucket is provided on the fuselage. A gap is formed between the limiting surface and the sewage bucket. An exhaust port is provided on the fuselage. The air outlet duct is connected with the inside of the fuselage to discharge the air discharged by the sewage suction fan through the exhaust port provided on the fuselage. The exhaust port is connected with the limiting surface and the sewage bucket to form a gap, so that the air is discharged from the fuselage through the gap between the two.

[0063] Of course, it is understandable that the suction fan and the battery pack can also be arranged inside the body; the clean water tank can also be arranged on the floor brush and located in the accommodating cavity. The bottom surface of the tooth groove can be a downwardly convex curved surface, and at the same time, the connecting portion 62 is not lower than the suction port 24, such as Fig.11 As shown, such technical solutions that do not deviate from the concept of the present invention are also within the protection scope of the present invention and will not be given as examples here.

[0064] Embodiment 2:

[0065] like Figures 12 to 16 As shown, the differences between this embodiment and the first embodiment include:

[0066] The roller brush in this embodiment is a crawler-type structure. Specifically, the roller brush 4 includes a roller shaft 40 and a cleaning member, the roller shaft includes a first rotating roller 44, a second rotating roller 45, and a support frame 46 connecting the first rotating roller 44 and the second rotating roller 45, the cleaning member is sleeved on the outer surface of the first rotating roller 44 and the second rotating roller 45, the first rotating roller is arranged at the rear side of the floor brush and close to the sewage suction port, the second rotating roller is arranged at the front side of the floor brush and away from the sewage suction port, the diameters of the first rotating roller 44 and the second rotating roller 45 are equal, and the scraping member 5 is arranged above the rotation axis of the first rotating roller 44. As an improvement, the diameter of the first rotating roller 44 is larger than the diameter of the second rotating roller 45.

[0067] As the surface cleaning device described in the present invention, the mounting section 51 of the scraping member 5 is arranged above the central axis of the roller brush 4, the extension surface of the suspended section 52 is higher than the rotational central axis of the roller brush, the connecting portion 62 of the comb tooth member 6 is arranged in close contact with the mounting section, and the suspended section 52 is at least partially arranged above the comb teeth 61, and the comb tooth member 6 includes a connecting portion 62 extending from the comb teeth 61 to the lower surface of the scraping member, that is, a connecting portion 62 is provided between the scraping member 5 and the comb teeth 61, and the comb teeth 61 and the connecting portion 62 form a combing surface abutting against the roller brush, and the first end and the second end are formed on the combing surface. The comb teeth 61 include the through section 611 and the guide section 612 as described in the first embodiment. The comb teeth include a front tooth surface 616, and the front tooth surface 616 forms the first end. The connecting portion includes a drainage surface 621, and the drainage surface forms the second end.

[0068] Compared with the method of the first embodiment, the combing surface of the comb tooth member is formed by the drainage surface and the front tooth surface in this embodiment, so that the space structure between the continuous drainage surface and the lower surface of the scraping member is more continuous and smooth, preventing large solid particles from being stuck in this space. On the other hand, the area of ​​the winding pressure release area at the second end is larger, and the windings in the entire axial direction of the roller brush can be peeled off by the second stage, thereby further improving the peeling effect of the windings.

[0069] The combing surface is inclined and extends toward the roller brush. The roller brush comprises a roller shaft and a cleaning member. The combing surface and its extended surface are separated from the outer surface of the roller shaft.

[0070] In this embodiment, the combing surface of the comb tooth member 6 includes a drainage surface 621 formed by the front side surface of the connecting portion 62 and a front tooth surface 616 of the comb tooth 61. The drainage surface 621 and the front tooth surface 616 together form the combing surface of the comb tooth member. The comb tooth 61 is not higher than the suction port 24. The through section 611 is arranged at the lower part of the comb tooth 61. Since the tooth groove does not extend to the bottom surface of the scraping member, the connecting portion 62 of the comb tooth member 6 extends forward to the upper part of the comb tooth 61 and fits with the suspended section 52 of the scraping member 5. The comb tooth and the suspended section 52 of the scraping member 5 are connected by the connecting portion 62. The front side surface of the connecting portion 62 forms a drainage surface for guiding the liquid flow downward. Therefore, the area between the lower surface of the scraping member 5, the front surface of the comb tooth member 6, the guide groove 614 and the outer surface of the roller brush forms a leeward area that the airflow cannot pass through, and this area forms a suction negative pressure area 500. The suction negative pressure area of ​​this embodiment is formed by the lower surface of the suspended section 52, the drainage surface 621, the front tooth surface 616 of the comb teeth 61, and the gap between the bottom surface of the guide groove 614 and the outer surface of the roller brush. The liquid flow formed by the dirty liquid squeezed and scraped off by the scraper bar passes through the drainage surface, carrying the dirt and / or entangled materials peeled off from the roller brush by the scraper bar to the comb teeth, and then is washed by the wind flow in the guide groove. Since the drainage area and the guide groove are leeward areas where the airflow cannot pass, a suction negative pressure area is formed. Therefore, the water pressure of the liquid flow in the drainage area is increased. When passing through the narrow area of ​​the guide groove, a narrow tube effect occurs, so the water pressure increases instantly, which accelerates the liquid flow carrying the dirt and / or entangled materials to flow through the guide groove of the guide section, and smoothly enters the gap of the through section, forming a slit effect between the gaps of the comb teeth at the corresponding sewage suction port. Therefore, a slit effect area is formed between the gaps of the comb teeth at the corresponding sewage suction port. Under the action of the sewage suction fan, the wind pressure in the slit effect area increases, the wind speed increases, and the suction force increases. The liquid flow carries the dirt and / or entangled materials to the slit effect area and is quickly sucked into the sewage suction port.

[0071] Of course, it is understandable that we can also use such comb teeth, such as Fig.15 As shown in FIG, the top of the comb teeth is higher than the top of the sewage suction port. Fig.16 As shown, the top of the comb teeth or the bottom of the tooth groove of the comb teeth is flush with the top of the sewage suction port. The other structures and beneficial effects of this embodiment are consistent with those of the first embodiment, and will not be repeated here.

[0072] Embodiment three:

[0073] like Fig.17 As shown, the differences between this embodiment and embodiments 1 and 2 include:

[0074] The dirt container 7 is arranged on the floor brush 2, and has a dirt holding cavity 71 and a dirt inlet 72. The dirt inlet 72 is arranged below the comb tooth member 6 and the dirt scraping member 5, so that the entangled objects or dirty liquid and dirt peeled off by the comb tooth member and the dirt scraping member when the roller brush rotates can fall into the dirt container under the action of gravity. Specifically, the dirt container 7 can also be detachably installed on the floor brush 2 to facilitate the user to take it out for cleaning.

[0075] As an implementation manner of this embodiment, the comb-tooth member 6 and the scraper 5 are arranged on the roller brush cover 26, so that the comb-tooth member and the scraper can be disassembled and cleaned together with the roller brush cover.

[0076] It can be understood that the single roller brush in this embodiment can also adopt a crawler-type roller brush structure as in the second embodiment.

[0077] It is easy for those skilled in the art to understand that the protection scope of the present application is not limited to the above preferred embodiments. Without departing from the technical principles of the present application, those skilled in the art can split and combine the technical solutions in the above preferred embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. A surface cleaning device capable of peeling off a winding object, comprising a floor brush equipped with a roller brush, wherein the floor brush is provided with a comb tooth member and a scraping member, wherein the comb tooth member and the scraping member are both in contact with the roller brush, and the comb tooth member comprises a plurality of comb teeth, wherein: The comb teeth include a front tooth surface that abuts against the roller brush, and the roller brush includes a roller shaft and a cleaning member. The front tooth surface and its extended surface are separated from the outer surface of the roller shaft, and the lower surface of the scraping member is at least partially fitted with the upper surface of the comb tooth member. The comb tooth member includes a first end and a second end located between the scraping member and the first end. When the roller brush rotates in a clockwise direction, the roller brush first abuts against the first end, and continues to move upward to the scraping member through the second end. When the scraping member abuts against the roller brush, the deformation of the roller brush is greater than the deformation of the roller brush when the first end and the second end abut against the roller brush. When the second end abuts against the roller brush, the deformation of the roller brush is less than the deformation of the roller brush when the first end abuts against the roller brush, so that the entangled object releases the pressure at the second end and is peeled off by the scraping member.

2. The surface cleaning device of the peelable wrapping according to claim 1, characterized in that: Tooth grooves are arranged between adjacent comb teeth, and the tooth grooves extend to the lower surface of the scraper, and the first end and the second end are formed on the front tooth surface.

3. The surface cleaning device of the peelable wrapping according to claim 1, characterized in that: The comb tooth member includes a connecting portion extending from the comb teeth to the lower surface of the scraper member, the comb teeth and the connecting portion form a combing surface abutting against the roller brush, and the first end and the second end are formed on the combing surface.

4. The surface cleaning device of the peelable wrapping according to claim 3, characterized in that: The front tooth surface forms the first end.

5. The surface cleaning device of the peelable wrapping according to claim 4, characterized in that: The connecting portion includes a drainage surface, and the drainage surface forms the second end.

6. The surface cleaning device of the peelable wrapping according to claim 1, characterized in that: The front tooth surface extends obliquely toward the roller brush.

7. The surface cleaning device of the peelable wrapping according to claim 3, characterized in that: The combing surface is inclined and extends toward the roller brush, and the combing surface and its extended surface are separated from the outer surface of the roller shaft.

8. The surface cleaning device of the peelable wrapping according to claim 6 or 7, characterized in that: The included angle between the front tooth surface or the combing surface and the horizontal plane is 70°≤γ<90°.

9. The surface cleaning device of a peelable wrapping according to any one of claims 1 to 7, characterized in that: The floor brush is also provided with a sewage suction port connected to the fan, and the comb teeth extend downward to at least partially cover the sewage suction port.

10. The surface cleaning device of the peelable wrapping according to claim 9, characterized in that: The comb teeth include through sections, and gaps are arranged between the through sections to form a slit effect area between the sewage suction port and the roller brush.

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