Rolling brush and cleaning device

Abstract

The utility model provides a rolling brush and a cleaning device, and belongs to the field of cleaning devices. The rolling brush comprises a roller body (10) and a plurality of cleaning assemblies (20), the cleaning assemblies (20) are arranged on the outer surface of the roller body (10) in the axial direction of the roller body (10), and the multiple cleaning assemblies (20) are arranged in the circumferential direction of the roller body (10) at intervals; each cleaning assembly (20) comprises a brush strip (21) and two supporting strips (22), the brush strip (21) and the two supporting strips (22) spirally extend from the first end of the roller body (10) to the second end of the roller body (10), the brush strip (21) is located between the two supporting strips (22), and the distance between the two supporting strips (22) in the same cleaning assembly (20) in the circumferential direction of the roller body (10) is smaller than the distance between the two adjacent cleaning assemblies (20) in the circumferential direction of the roller body (10). The supporting strips (22) on the two sides of the brush strip (21) can support the cleaned filaments, the winding perimeter of the filaments on the rolling brush is increased, the probability that the filaments are wound on the rolling brush by more than one circle is reduced, the filaments are not prone to being wound on the rolling brush, running of the rolling brush is not affected, and the cleaning effect on the filaments on the surfaces of objects such as carpets and the like is improved.

Description

[0001] This application claims priority to Chinese Patent Application No. 202311237267.8, filed September 22, 2023, entitled “Rolling Brush, Rolling Brush Assembly, and Cleaning Device,” Chinese Patent Application No. 202311245939.X, filed September 22, 2023, entitled “Rolling Brush and Cleaning Device,” the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of cleaning devices, in particular to a rolling brush and a cleaning device. BACKGROUND

[0003] A cleaning device is a commonly used household appliance that can be used to clean dust, dirt, and other debris on the surface of a floor, a carpet, furniture, and the like.

[0004] The cleaning device generally includes a body and a rolling brush. The rolling brush is located in the body and is rotationally connected to the body. During use of the cleaning device, the rolling brush rolls on the surface of the object to be cleaned. During rolling of the rolling brush on the surface of the object, dust and other debris on the surface of the object are brought up and are sucked into the body under the action of suction.

[0005] Currently, during use of the cleaning device, various debris, especially hair and other filamentary objects that are entangled in deep pile, are easily hidden between the pile of a surface such as a carpet, and are difficult to clean. SUMMARY

[0006] Embodiments of the present application provide a rolling brush and a cleaning device, which are beneficial to improve the cleaning effect of filamentary objects on the surface of a carpet and the like. The technical solutions are as follows.

[0007] In a first aspect, embodiments of the present application provide a rolling brush applied to a cleaning device. The rolling brush includes a roller body and a plurality of cleaning assemblies. The cleaning assemblies are arranged on the outer surface of the roller body along the axial direction of the roller body. The plurality of cleaning assemblies are arranged at intervals along the circumferential direction of the roller body.

[0008] The cleaning assembly includes a brush strip and two support strips. The brush strip and the two support strips respectively extend spirally from a first end of the roller body to a second end of the roller body, and the brush strip is located between the two support strips. The interval of the two support strips in the same cleaning assembly along the circumferential direction of the roller body is less than the interval of adjacent two cleaning assemblies along the circumferential direction of the roller body.

[0009] In some examples, the distance R1 from the outer edge of the brush strip to the axis of the roller body, the distance R2 from the outer edge of one of the two support strips to the axis of the roller body, and the distance R3 from the outer edge of the other of the two support strips to the axis of the roller body satisfy the following relationship:

[0010] R1 is greater than R2, and R1 is greater than R3.

[0011] In some examples, the difference between R1 and R2 is no more than 3 mm, and the difference between R1 and R3 is no more than 3 mm.

[0012] In some examples, the roller brush includes two cleaning assemblies, the surface of the roller body has two support ribs, the support ribs extend helically along the axial direction of the roller body, and the two support ribs and the two cleaning assemblies are alternately distributed in the circumferential direction of the roller body.

[0013] In some examples, the two cleaning assemblies are arranged symmetrically about the center of the roller body, the two support ribs are arranged symmetrically about the center of the roller body, and the distance between any one of the two support ribs and the two cleaning assemblies is equal in the circumferential direction of the roller body.

[0014] In some examples, the support strip includes a first mounting portion and a support portion, the first mounting portion is in the form of a strip, the support portion is connected to one side of the first mounting portion, the connection between the support portion and the first mounting portion has a second rounded corner, the radius of the second rounded corner is greater than a second radius threshold, and the first mounting portion is connected to the roller body; the surface of the roller body has a first T-shaped groove, the opening of the first T-shaped groove has a first rounded corner, the radius of the first rounded corner is greater than a first radius threshold, and the first mounting portion is located in the first T-shaped groove.

[0015] In some examples, the roller brush further includes a first end cover, the first end cover is detachably connected to the first end of the roller body.

[0016] In the same cleaning assembly, one end of at least one of the support strips is inserted between the first end cover and the roller body, and the first end cover is used to bend the part of the support strip between the first end cover and the roller body towards the roller body.

[0017] In some examples, the first end cover includes a mounting disc and a first limiting plate, the first limiting plate is connected to one side of the mounting disc, the mounting disc is arranged opposite to the end face of the roller body, there is a gap between the first limiting plate and the outer side wall of the roller body, at least one of the support strips is located in the gap and abuts against the inner side wall of the first limiting plate.

[0018] In some examples, the first limiting plate has a first notch, and at least part of the brush strip is located in the first notch.

[0019] In some examples, in the same cleaning assembly, at least part of one of the support strips is located in the first notch; or,

[0020] Both of the support strips are at least partially inserted between the first end cover and the roller body in the same cleaning assembly.

[0021] In some examples, the first end cover further comprises a plurality of second limiting plates, the second limiting plates and the first limiting plates are connected on the same side of the mounting disc, the plurality of second limiting plates are distributed along the edge of the mounting disc, the second limiting plates are in transition fit with the outer side wall of the roller body, and the first limiting plates are located between adjacent second limiting plates.

[0022] In some examples, the minimum gap between the second limiting plate and the outer side wall of the roller body is no more than 0.2mm.

[0023] In a second aspect, the embodiments of the present application further provide a cleaning device, comprising a machine body and any one of the roller brushes as described in the previous aspect, the machine body has a roller brush mounting groove, and the roller brush is located in the roller brush mounting groove and rotationally connected with the machine body.

[0024] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0025] By arranging a plurality of cleaning assemblies on the outer surface of the roller body, wherein the cleaning assembly comprises a brush strip and two support strips, the support strips and the brush strip respectively extend spirally on the surface of the roller body, and the brush strip is located between the two support strips, in the process of cleaning the carpet and other objects to be cleaned, one of the support strips will contact the object to be cleaned before the brush strip, and the tufted pile on the surface of the object to be cleaned will be pushed away. After the brush strip is cleaned, the other support strip will contact the surface of the object to be cleaned again, and the debris cleaned by the brush strip will be swept away. During the cleaning process, the support strips on both sides of the brush strip can support the filiform matter cleaned out, increase the circumference of the filiform matter wound on the roller brush, reduce the probability of the filiform matter winding more than one turn on the roller brush, prevent the filiform matter from being easily wound on the roller brush, do not affect the operation of the roller brush, and are beneficial to improving the cleaning effect of the filiform matter on the surface of the carpet and other objects. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a structural schematic view of a cleaning device provided by the embodiments of the present application;

[0028] Figure 2is a bottom view of a cleaning device provided by an embodiment of the present application;

[0029] Figure 3 is Figure 2 is a sectional view of I-I in

[0030] Figure 4 is a partial structural schematic view of a cleaning device provided by an embodiment of the present application;

[0031] Figure 5 is a structural schematic view of a rolling brush provided by an embodiment of the present application;

[0032] Figure 6 is a schematic view of a cross section of a rolling brush provided by an embodiment of the present application;

[0033] Figure 7 is a sectional schematic view of a rolling brush provided by an embodiment of the present application;

[0034] Figure 8 is a structural schematic view of a support strip provided by an embodiment of the present application;

[0035] Figure 9 is a partial structural schematic view of a support strip provided by an embodiment of the present application;

[0036] Figure 10 is a sectional schematic view of a roller body provided by an embodiment of the present application;

[0037] Figure 11 is a sectional schematic view of a brush strip provided by an embodiment of the present application;

[0038] Figure 12 is a structural schematic view of a first end cover provided by an embodiment of the present application;

[0039] Figure 13 is an assembly schematic view of a first end cover provided by an embodiment of the present application;

[0040] Figure 14 is a structural schematic view of a second end cover provided by an embodiment of the present application;

[0041] Figure 15 is a partial structural schematic view of a rolling brush provided by an embodiment of the present application;

[0042] Figure 16 is a partial structural schematic view of a cleaning device provided by an embodiment of the present application.

[0043] Reference Signs:

[0044] Body: 100; Roll brush: 200; Roll brush mounting groove: 100a; Suction port: 100b; Comb teeth: 300; Power mechanism: 400; Transmission mechanism: 500; Roller body: 10; Support rib: 11; Cleaning assembly: 20; Brush strip: 21; Support strip: 22; First mounting portion: 221; Support portion: 222; Second round corner: 223; First T-shaped groove: 10a; First round corner: 10b; Third round corner: 10c; First section: 2211; Second section: 2212; Flexible cloth: 224; Stop block: 225; Second mounting portion: 211; Brush hair: 212; Second T-shaped groove: 10d; First end cover: 31; Second end cover: 32; Mounting disc: 311; First limiting plate: 312; Second limiting plate: 313; Second notch: 313a; Transition plate: 314; First notch: 312a; Seam cover rib: 321; First comb tooth: 301; Second comb tooth: 302; First intersection: A; Second intersection: B; Third intersection: C; Fourth intersection: D. DETAILED DESCRIPTION

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of embodiments of the application. However, persons having ordinary skill in the art will appreciate that embodiments of the application can be practiced without the specific details, or with additional details, or with modifications to the details.

[0046] It should also be understood that, in this specification and the claims, the term "and / or" is used to mean one or more of the associated listed items, as well as any combination of one or more of the associated listed items.

[0047] It should be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or indirectly on or connected to the other element by way of one or more other elements.

[0048] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like as terms of reference are in the context of the drawings only and are not intended to limit the application to the position of the application as shown in the drawings. Therefore, the terms of reference should not be construed as indicating or implying specific orientations or configurations of the application, and therefore should not be used to limit the application.

[0049] In addition, in the description of the present application and the appended claims, the terms "first", "second", "third", etc. are used only to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0050] In the present application, the reference to "one embodiment" or "some embodiments" means that the particular feature, structure or characteristic described in connection with this embodiment is included in at least one embodiment of the present application. Thus, the appearance of the phrases "in one embodiment", "in some embodiments", "in other some embodiments", "in yet some embodiments" or the like in various places in the specification is not necessarily all referring to the same embodiment, but can mean "one or more but not all embodiments", unless otherwise specifically stated. The terms "comprise", "include", "have" and their conjugates mean "including but not limited to", unless otherwise specifically stated. "Multiple" means two or more.

[0051] Figure 1 is a structural schematic diagram of a cleaning device provided by an embodiment of the present application. As an example, the cleaning device can be a vacuum cleaner. Figure 2 is a bottom view of a cleaning device provided by an embodiment of the present application. As shown in Figure 1 and Figure 2 , the cleaning device comprises a body 100 and a rolling brush 200, the body 100 has a rolling brush mounting groove 100a, the rolling brush 200 is located in the rolling brush mounting groove 100a and is rotationally connected with the body 100.

[0052] Figure 3 is a sectional view of I-I in Figure 2 , as shown in Figure 3 , one side wall of the rolling brush mounting groove 100a has a suction port 100b.

[0053] The cleaning device can further comprise a dust collecting member, which can be a dust collecting box, a dust collecting bag or other container capable of containing sundries. The dust collecting member is connected with the body 100, and the suction port 100b communicates the rolling brush mounting groove 100a and the dust collecting member.

[0054] As shown in Figure 3 , the cleaning device further comprises a comb tooth bar 300, the comb tooth bar 300 is located between the rolling brush 200 and the suction port 100b and is connected with the body 100.

[0055] The comb tooth bar 300 is used to interact with the rolling brush 200 during the rotation of the rolling brush 200, so as to separate the sundries such as hair and other filamentary objects remaining on the rolling brush 200 from the rolling brush 200.

[0056] Figure 4 is a partial structural schematic diagram of a cleaning device provided by an embodiment of the present application. As shown inFigure 4 As shown, the power mechanism 400 and the transmission mechanism 500 are further arranged in the body 100, the transmission mechanism 500 is in transmission connection with the power mechanism 400 and the roller brush 200 to drive the roller brush 200 to rotate. The transmission mechanism 500 can be in transmission connection with one end of the roller brush 200.

[0057] Exemplarily, the power mechanism 400 can include a motor, and the transmission mechanism 500 can be a belt transmission mechanism.

[0058] When the cleaning device is used, the opening of the roller brush mounting groove 100a faces the surface of the object to be cleaned. The dirt on the surface of the object to be cleaned is sucked into the roller brush mounting groove 100a under the action of the airflow and enters the dust collecting member through the air suction port 100b. In this process, part of the dirt directly enters the roller brush mounting groove 100a under the action of the airflow and is then sucked into the air suction port 100b, and the other part of the dirt is separated from the surface of the object to be cleaned under the action of the roller brush 200 and then enters the roller brush mounting groove 100a under the action of the airflow and is then sucked into the air suction port 100b.

[0059] Figure 5 is a structural schematic diagram of a roller brush provided by an embodiment of the present application, and the roller brush 200 is applied to a cleaning device. As shown, Figure 5 The roller brush 200 includes a roller body 10 and a plurality of cleaning assemblies 20. The cleaning assemblies 20 are arranged on the outer surface of the roller body 10 along the axial direction of the roller body 10, and the plurality of cleaning assemblies 20 are arranged at intervals along the circumferential direction of the roller body 10.

[0060] As an example, the roller brush 200 can include two cleaning assemblies 20, and the two cleaning assemblies 20 are arranged in a central symmetry. By arranging a plurality of cleaning assemblies 20, the cleaning efficiency can be improved.

[0061] The cleaning assembly 20 includes a brush strip 21 and two support strips 22, the brush strip 21 and the two support strips 22 respectively extend spirally from the first end of the roller body 10 to the second end of the roller body 10, and the brush strip 21 is located between the two support strips 22. The interval of the two support strips 22 in the same cleaning assembly 20 along the circumferential direction of the roller body 10 is smaller than the interval of the adjacent two cleaning assemblies 20 along the circumferential direction of the roller body 10.

[0062] Exemplarily, the first end of the roller body 10 can be an end for transmission connection with the transmission mechanism 500. The second end of the roller body 10 can be the other end of the roller body 10 away from the first end of the roller body 10. In the direction from the second end to the first end parallel to the axis of the roller body 10, the brush strip 21 and the support strip 22 can all be right-handed structures, that is, from the second end to the first end, the rotation directions of the brush strip 21 and the support strip 22 are both clockwise.

[0063] Figure 6 is a schematic diagram of the cross section of a roller brush provided by an embodiment of the present application. As shown,Figure 6 As shown, the cross-section of the roller brush 200, that is, the cross-section perpendicular to the axis of the roller body 10, has intersections between the outer edges of the support strip 22 and the outer edges of the brush strip 21 and the cross-section of the roller brush 200. For easy distinction, the intersection of the outer edge of the support strip 22 and the cross-section of the roller brush 200 is defined as the first intersection point A, the intersection of the outer edge of the brush strip 21 and the cross-section of the roller brush 200 is defined as the second intersection point B, and the intersection of the rotation axis of the roller body 10 and the cross-section is defined as the third intersection point C.

[0064] In this embodiment, the spacing between the two support bars 22 in the same cleaning assembly 20 along the circumferential direction of the roller body 10 can refer to the distance between the outer edges of the two support bars 22 in the same cross-section of the roller brush 200 and the same cleaning assembly 20. This spacing can be the straight-line distance between the two first intersection points A in the cross-section of the same cleaning assembly 20, or the length of an arc segment passing through one of the first intersection points A and another passing through the other first intersection point A, with the third intersection point C as the endpoint. The center of this arc is the third intersection point C, and at least one of the two first intersection points A is an endpoint of this arc.

[0065] In this embodiment, the distance between two adjacent cleaning components 20 along the circumferential direction of the roller body 10 can refer to the distance between the outer edges of the two brush strips 21 in the same cross-section of the roller brush 200. This distance can be the length of an arc segment in the cross-section between two adjacent cleaning components 20, with the third intersection point C as the endpoint, passing through one second intersection point B and another second intersection point B, where the center of the arc is the third intersection point C, and at least one of the two second intersection points B is the endpoint of the arc.

[0066] In the embodiments of this application, in the same cleaning component 20, the distance between the outer edge of the support strip 22 and the outer edge of the brush strip 21 can refer to the straight-line distance between the first intersection point A and the second intersection point B on the same cross-section of the roller brush 200, or it can be the length of an arc between a ray passing through the first intersection point A and another ray passing through the second intersection point B with the third intersection point C as the endpoint. The center of the arc can be the third intersection point C, and one of the endpoints of the arc is the first intersection point A or the second intersection point B.

[0067] Figure 7 This is a cross-sectional schematic diagram of a roller brush provided in an embodiment of this application. For example... Figure 7 As shown, the roller brush 200 includes two cleaning assemblies 20, and the surface of the roller body 10 has two support ribs 11, which extend spirally along the axial direction of the roller body 10. The two support ribs 11 and the two cleaning assemblies 20 are alternately distributed along the circumference of the roller body 10.

[0068] The greater the outer diameter of the roller body 10, the longer the minimum length of the hair that can be wound around the roller body 10, that is, the more difficult it is for the same length of hair to be wound around the roller body 10. The support rib 11 functions to increase the outer diameter of the roller body 10, so as to increase the difficulty of winding hair around the roller body 10.

[0069] As an example, the two cleaning assemblies 20 are symmetrically arranged about the center of the roller body 10, the two support ribs 11 are symmetrically arranged about the center of the roller body 10, and the distance from any one of the two support ribs 11 to the two cleaning assemblies 20 is equal along the circumference of the roller body 10.

[0070] Referring again to Figure 6 In the embodiment of the present application, the distance from the support rib 11 to the cleaning assembly 20 along the circumference of the roller body 10 can refer to the distance from the outer edge of the support rib 11 to the outer edge of the brush strip 21 in the same cross section of the roller brush 200. The intersection of the outer edge of the support rib 11 and the cross section of the roller brush 200 is defined as a fourth intersection point D. The distance can be the straight line distance between the fourth intersection point D and the second intersection point B on the cross section, or the length of a circular arc between a ray passing through the fourth intersection point D and another ray passing through the second intersection point B, with the third intersection point C as the end point of the ray. At least one of the second intersection point B and the fourth intersection point D is the end point of the circular arc.

[0071] That is, the cleaning assemblies 20 and the support ribs 11 are equally angularly spaced along the circumference of the roller body 10, and both the cleaning assemblies 20 and the support ribs 11 can function to increase the outer diameter of the roller body 10. More uniform arrangement can further reduce the possibility of hair winding around the roller body 10.

[0072] The distance R1 from the outer edge of the brush strip 21 to the axis of the roller body 10, the distance R2 from the outer edge of one of the two support strips 22 to the axis of the roller body 10, and the distance R3 from the outer edge of the other of the two support strips 22 to the axis of the roller body 10 satisfy the following relationship:

[0073] R1 is greater than R2, and R1 is greater than R3.

[0074] As an example, R2 can be equal to R3.

[0075] The outer edge referred to herein refers to the edge away from the axis of the roller body 10. For example, the outer edge of the brush strip 21 refers to the edge of the brush strip 21 away from the axis of the roller body 10.

[0076] R1 is greater than R2, and R1 is greater than R3, that is, along the radial direction of the roller body 10, the outer edge of the brush strip 21 exceeds the outer edge of the support strip 22, which makes the brush strip 21 be able to clean deeper into the clusters of the carpet to be cleaned after the support strip 22 pushes away the clusters of the carpet to be cleaned, and the filaments are brought out from the clusters.

[0077] In the embodiment, the cleaning assembly 20 is arranged on the side of the roller body 10, the cleaning assembly 20 includes the brush strip 21 and two support strips 22, the support strips 22 and the brush strip 21 are helically extended on the surface of the roller body 10, and the brush strip 21 is located between the two support strips 22. During the cleaning process, the helically extended brush strip 21 and the support strips 22 can promote the hair to move to the end of the brush strip, so that the hair is not easily entangled in the middle of the roller brush 200. During the cleaning process of the carpet to be cleaned, one of the support strips 22 will contact the carpet to be cleaned before the brush strip 21, and push away the clusters of the carpet to be cleaned. Since the distance from the outer edge of the brush strip 21 to the axis of the roller body 10 is greater than the distance from the outer edge of the support strip 22 to the axis of the roller body 10, after the support strip 22 pushes away the clusters, the brush strip 21 can penetrate between the clusters of the carpet to be cleaned, clean out the debris hidden in the clusters, and separate the filaments entangled with the clusters. After the brush strip 21 is cleaned, the other support strip 22 contacts the surface of the carpet to be cleaned again, and sweeps away the debris cleaned out by the brush strip 21. During the cleaning process, the support strips 22 on both sides of the brush strip 21 can support the filaments cleaned out, increase the length of the filaments entangled on the roller brush 200, reduce the probability of the filaments entangled more than one turn on the roller brush 200, prevent the filaments from being entangled on the roller brush 200, and do not affect the operation of the roller brush 200, which is beneficial to improve the cleaning effect of the filaments on the surface of the carpet and the like.

[0078] In some examples, the difference between R1 and R2 is not more than 3 mm, and the difference between R1 and R3 is not more than 3 mm.

[0079] If the length by which the outer edge of the brush strip 21 exceeds the outer edge of the support strip 22 is too long, the brush strip 21 cannot extend into the clusters to clean the debris during the rolling process of the roller brush 200.

[0080] For example, the difference between R1 and R2 is 1 mm.

[0081] In the above embodiment, by making the difference between R1 and R2 not more than 3 mm, the brush strip 21 can better clean the debris in the clusters during the rolling process of the roller brush 200.

[0082] In some examples, the outer edge of at least one of the two support bars 22 is spaced apart from the outer edge of the brush bar 21 by no more than 15mm, for example, by 2mm.

[0083] During the cleaning process, the filament such as hair hidden in the tufted pile is easy to be entangled or stuck on the brush bar 21, and then be brought out of the deep part of the tufted pile and separated from the tufted pile by the brush bar 21. The support bar 22 can support the filament brought out by the brush bar 21, reduce the probability of the filament being entangled more than one turn on the roller brush 200, and thus reduce the possibility of the filament being entangled on the roller brush 200.

[0084] When the brush bar 21 first contacts the filament, the filament is usually entangled or stuck at the outer edge of the brush bar 21. If the outer edge of the brush bar 21 is spaced apart from the outer edge of the support bar 22 by too large a distance, the part of the filament entangled or stuck on the brush bar 21 will slide along the brush bar 21 towards the roller body 10 before the filament is supported by the support bar 22, so that the filament is more tightly entangled or stuck on the brush bar 21, and thus the filament is difficult to be separated from the brush bar 21 and be sucked into the suction port 100b, and the filament remains on the roller brush 200. In the embodiments of the present application, the outer edge of the brush bar 21 is spaced apart from the outer edge of the support bar 22 by a small distance, so that the filament is supported by the support bar 22 after the brush bar 21 brings the filament out of the deep part of the tufted pile by a small length, and the part of the filament entangled or stuck on the brush bar 21 is prevented from sliding along the brush bar 21 towards the roller body 10, so that the filament is more easily separated from the brush bar 21.

[0085] For example, the outer edge of the support bar 22 can be spaced apart from the outer edge of the brush bar 21 by 2mm.

[0086] In some examples, the outer edge of the support bar 22 can also contact the brush bar 21.

[0087] For example, the outer edge of the support bar 22 located in front of the brush bar 21 can contact the brush bar 21.

[0088] During the operation of the cleaning device, the roller brush 200 usually rotates in one direction. Here, the support bar 22 located in front of the brush bar 21 refers to the support bar 22 located in front of the brush bar 21 in the cross section of the roller brush 200 and in the direction of rotation of the roller brush 200 between the two support bars 22, and the other support bar 22 is the support bar 22 located behind the brush bar 21.

[0089] Figure 8 is a structural schematic view of a support bar provided by the embodiments of the present application. As shown in Figure 8As shown, the cross section of the support strip 22 can be T-shaped. The support strip 22 comprises a first mounting portion 221 and a support portion 222, the first mounting portion 221 is in the shape of a strip, and the support portion 222 is connected to one side of the first mounting portion 221.

[0090] Figure 9 is a schematic view of a partial structure of a support strip provided by an embodiment of the present application. As shown, Figure 9 the connection between the support portion 222 and the first mounting portion 221 has a second round corner 223, and the first mounting portion 221 is connected to the roller body 10.

[0091] The first mounting portion 221 serves to connect the roller body 10, and the support portion 222 serves to support the filament. During the operation of the cleaning device, the support portion 222 will be in contact with the object to be cleaned and will be deformed laterally, thereby generating stress at the connection between the support portion 222 and the first mounting portion 221. By providing the second round corner 223 at the connection between the support portion 222 and the first mounting portion 221, the stress at the connection can be reduced, thereby prolonging the service life of the support strip 22.

[0092] In some optional embodiments, the radius of the second round corner 223 is greater than a second radius threshold. For example, the second radius threshold can be 3 mm.

[0093] In the above embodiments, by making the radius of the second round corner 223 greater than the second radius threshold, the stress at the connection can be further reduced, the wear of the support strip 22 at the part where the roller body 10 is in contact with the support strip 22 can be reduced, and the tear resistance of the support strip 22 can be improved.

[0094] Exemplarily, the support strip 22 can be a rubber strip, a silica gel strip, or the like. The hardness of the support strip 22 can be 20 degrees to 60 degrees, for example, the hardness of the support strip 22 can be 30 degrees.

[0095] Figure 10 is a schematic view of a cross section of a roller body provided by an embodiment of the present application. As shown, Figure 10 the surface of the roller body 10 has a first T-shaped groove 10a, the first T-shaped groove 10a has a first round corner 10b at the opening of the first T-shaped groove 10a, and the first mounting portion 221 is located in the first T-shaped groove 10a.

[0096] The first T-shaped groove 10a cooperates with the first mounting portion 221 to prevent the support strip 22 from being separated from the roller body 10. During the lateral deformation of the support portion 222, the support portion 222 can be in contact with the two sides of the first T-shaped groove 10a. By providing the first round corner 10b at the two sides of the opening of the first T-shaped groove 10a, the stress that the support portion 222 receives when in contact with the two sides of the opening can be reduced, and the service life of the support strip 22 can be prolonged.

[0097] In some alternative implementations, the radius of the first fillet 10b is greater than a first radius threshold. The first radius threshold may be equal to, greater than, or less than a second radius threshold. For example, the first radius threshold may be 3 mm.

[0098] In the above embodiment, by making the radius of the first fillet 10b greater than the first radius threshold, the stress at the connection can be further reduced, the wear of the groove of the first T-groove 10a on the support strip 22 can be reduced, thereby improving the tear resistance of the support strip 22.

[0099] In this example, the portion of the first T-groove 10a corresponding to the second fillet 223 may also have a third fillet 10c, thereby further reducing the stress on the support bar 22 and extending the service life of the support bar 22.

[0100] like Figure 8 As shown, the first mounting part 221 includes a first segment 2211 and a second segment 2212 connected together. The first segment 2211 is close to the first end of the roller body 10, and the thickness of the first segment 2211 is less than the thickness of the second segment 2212.

[0101] The thickness of the first mounting portion 221 refers to the distance between the side of the first mounting portion 221 that is close to the support portion 222 and the other side that is far away from the support portion 222.

[0102] The second segment 2212 is thicker, resulting in a smaller fit clearance between the second segment 2212 and the first T-groove 10a. This smaller fit clearance makes the support bar 22 relatively stable with respect to the roller body 10, preventing the support bar 22 from becoming loose. The first segment 2211 is thinner, resulting in a larger fit clearance between the first segment 2211 and the first T-groove 10a. This allows a portion of the support bar 22 near the first end of the roller body 10 to float, thereby reducing the radial compression of the first segment 2211 of the support bar 22 on the roller body 10.

[0103] The first end of the roller 10 is used for transmission connection with the transmission mechanism 500, that is, the first end of the roller 10 is the end that receives power. The first end of the roller 10 is subjected to greater radial compression, which will affect the rotational stability of the roller 10. In this example, the first section 2211 of the support bar 22 is thinner, and the radial compression it generates on the roller 10 is smaller, which helps to improve the rotational stability of the roller 10.

[0104] The length of the second segment 2212 can be greater than the length of the first segment 2211, so that most of the first mounting part 221 can fit more firmly with the first T-slot 10a, thereby improving the stability of the support bar 22 installation.

[0105] The first mounting portion 221 can further comprise a stopper 225 connected to the end of the second section 2212 away from the first section 2211, and the stopper 225 is at least partially outside the first T-shaped slot 10a. The stopper 225 cooperates with the roller body 10 to avoid the first mounting portion 221 from sliding along the first T-shaped slot 10a.

[0106] As shown in Figure 9 At least one side of the support portion 222 is covered with a flexible cloth 224, and the edge of the flexible cloth 224 away from the first mounting portion 221 is slightly beyond the edge of the support portion 222 away from the first mounting portion 221.

[0107] In the present example, the flexible cloth 224 covers one side of the support portion 222 and part of the surface of the first mounting portion 221. For example, the side of the support strip 22 away from the brush strip 21 in front of the brush strip 21 is covered with the flexible cloth 224, and the side of the support strip 22 close to the brush strip 21 behind the brush strip 21 is covered with the flexible cloth 224.

[0108] The flexible cloth 224 covers at least one side of the support portion 222, which can provide protection to the support strip 22 and reduce the abrasion of the support portion 222.

[0109] As an example, the edge of the flexible cloth 224 away from the first mounting portion 221 is slightly beyond the edge of the support portion 222 away from the first mounting portion 221 by no more than 1mm.

[0110] The edge of the support portion 222 away from the first mounting portion 221 has the function of sweeping away dirt and tufted pile on the surface of the carpet, and the edge position is more prone to wear. By setting the edge of the flexible cloth 224 slightly beyond the edge of the support portion 222, the protection of the edge of the support portion 222 can be improved, and the abrasion of the edge of the support portion 222 can be reduced.

[0111] Exemplarily, the thickness of the flexible cloth 224 can be 0.3mm-0.4mm. The flexible cloth 224 can be nylon cloth or polyester cloth.

[0112] Figure 11 is a cross-sectional view of a brush strip provided by an embodiment of the present application, as shown in Figure 11As shown, the cross-section of the brush strip 21 can also be T-shaped. The brush strip 21 can include a second mounting portion 211 and bristles 212, with the bristles 212 distributed on one side of the second mounting portion 211. The density, softness, and diameter of the bristles 212 can all be selected according to different cleaning effects. For example, the diameter of the bristles 212 can be 0.2 mm. The brush strip 21 can include the same type of bristles 212 or multiple different types of bristles 212. The same type of bristles 212 refers to bristles 212 made of the same fibers, while different types of bristles 212 are made of different fibers. The same fibers can refer to the same material and / or the same diameter. Different bristles 212 can refer to different materials and / or different diameters.

[0113] The outer wall of the roller body 10 may also have a second T-groove 10d, through which the brush strip 21 is connected to the roller body 10. The second mounting part 211 may be located in the second T-groove 10d, and the bristles 212 may extend outside the second T-groove 10d.

[0114] like Figure 5 As shown, the roller brush 200 also includes a first end cap 31 and a second end cap 32. The first end cap 31 is connected to the first end of the roller body 10, and the second end cap 32 is connected to the second end of the roller body 10.

[0115] The first end cap 31 and the second end cap 32 can be detachably connected to the roller body 10. For example, they can be connected by snap-fit.

[0116] In the same cleaning assembly 20, at least one end of a support bar 22 is inserted between a first end cap 31 and a roller body 10. The first end cap 31 is used to cause the portion of the support bar 22 located between the first end cap 31 and the roller body 10 to bend toward the direction of the roller body 10.

[0117] In this example, at the first end of the roller body 10, after the support portion 222 of the support bar 22 is bent under the action of the first end cover 31, the height of the support bar 22 protruding from the roller body 10 at this position is reduced. This allows the support bar 22 to avoid being struck by the comb teeth and pulled by the object to be cleaned during use. The radial force generated by the support bar 22 on the first end of the roller body 10 is reduced, which helps to improve the rotational stability of the roller body 10. It also provides protection for the end of the support bar 22, reducing wear on the end of the support bar 22.

[0118] For example, the length of the portion of the support bar 22 located between the first end cap 31 and the roller body 10 is not less than 5 mm.

[0119] In the above embodiment, by making the length of the portion of the support strip 22 between the first end cover 31 and the roller body 10 not less than 5 mm, the stability of the insertion connection of the support strip 22 and the first end cover 31 can be increased, so as to ensure that the support strip 22 will not be pulled out of the first end cover 31.

[0120] Figure 12 is a structural schematic diagram of a first end cover provided by an embodiment of the present application. As shown in Figure 12 , the first end cover 31 comprises a mounting disc 311 and a first limiting plate 312, and the first limiting plate 312 is connected to one side of the mounting disc 311. In combination with Figure 5 , the mounting disc 311 is arranged opposite to the end face of the roller body 10, and the first limiting plate 312 has a gap with the outer side wall of the roller body 10. At least one support strip 22 is located in the gap and abuts against the inner side wall of the first limiting plate 312.

[0121] In the present example, the support strip 22 located in front of the brush strip 21 is located in the gap between the first limiting plate 312 and the outer side wall of the roller body 10.

[0122] By inserting the end of the support strip 22 into the gap between the first limiting plate 312 and the outer side wall of the roller body 10, the support strip 22 is bent towards the roller body 10, so that the height of the support strip 22 protruding from the roller body 10 at this position is reduced. The above embodiment has at least the following beneficial effects: 1. The height of the support strip 22 protruding from the roller body 10 at this position is reduced, which can avoid the beating of the comb teeth and the pulling of the objects to be cleaned, thereby protecting the end of the support strip 22 and reducing the wear of the end of the support strip 22; 2. The surface of the support strip 22 abuts against the inner side wall of the first limiting plate 312, which can ensure that the support strip 22 will not be quickly worn by the edge of the first limiting plate 312, thereby ensuring the service life of the roller brush 200.

[0123] As shown in Figure 12 , the first limiting plate 312 further has a first notch 312a, and at least part of the brush strip 21 is located in the first notch 312a, and the first notch 312a is used to avoid the end of the brush strip 21.

[0124] The first end cover 31 further comprises a plurality of second limiting plates 313, and the second limiting plates 313 and the first limiting plate 312 are connected to the same side of the mounting disc 311. The plurality of second limiting plates 313 are distributed along the edge of the mounting disc 311, the second limiting plates 313 are in transition fit with the outer side wall of the roller body 10, and the first limiting plate 312 is located between adjacent second limiting plates 313.

[0125] The second limiting plate 313 is used to cooperate with the roller body 10, so that the first end cover 31 and the roller body 10 can be stably assembled together. The second limiting plate 313 is in transition fit with the outer side wall of the roller body 10, that is, the second limiting plate 313 and the roller body 10 can be in interference fit or clearance fit. The interference fit can improve stability, make the first end cover 31 and the roller body 10 more firmly assembled, and reduce the possibility of foreign matter such as hair being stuck between the second limiting plate 313 and the roller body 10. The clearance fit can facilitate disassembly and assembly of the first end cover 31 and the roller body 10, and facilitate replacement of the roller body 10, the support strip 22 or the brush strip 21.

[0126] Exemplarily, the minimum clearance between the second limiting plate 313 and the outer side wall of the roller body 10 is not more than 0.2 mm.

[0127] Foreign matter such as hair stuck in the gap between the second limiting plate 313 and the outer side wall of the roller body 10 is difficult to clean, and may be stuck inside the roller brush 200, which may adversely affect the movement of some moving parts such as bearings. Although the diameter of the hair is very small, the hair naturally wound outside the roller brush 200 is usually curved and coiled, and is not in a tight state. These naturally coiled hairs are also difficult to pass through the gap larger than the diameter of the hair, and the gap is set to be not more than 0.2 mm to effectively prevent the hair from being stuck between the second limiting plate 313 and the outer side wall of the roller body 10, and to avoid too high assembly precision, increase manufacturing cost and assembly difficulty.

[0128] The gap between the second limiting plate 313 and the outer side wall of the roller body 10 is set to be relatively small to avoid the foreign matter such as hair being stuck.

[0129] The edge of the second limiting plate 313 has a second notch 313a, and the end of the support rib 11 is located in the second notch 313a.

[0130] As shown in Figure 12 In the first limiting plate 312 and the second limiting plate 313, a transition plate 314 is further connected, and the transition plate 314 smoothly connects the first limiting plate 312 and the second limiting plate 313. The first limiting plate 312 and the second limiting plate 313 are connected through the transition plate 314, which can improve the structural strength of each and reduce deformation.

[0131] In some examples, at least part of one support strip 22 in the same cleaning assembly 20 is located in the first notch 312a.

[0132] In this example, the first limiting plate 312 has a first notch 312a, and the brush strip 21 and the support strip 22 located behind the brush strip 21 are located in the first notch 312a.

[0133] Referring to Figure 5In the shown example, at least part of the brush strip 21 is located in the first gap 312a of the first limiting plate 312, and at least part of the support strip 22 in front of the brush strip 21 is located between the first limiting plate 312 and the outer side wall of the roller body 10, and the part located between the first limiting plate 312 and the outer side wall of the roller body 10 is bent towards the brush strip 21.

[0134] By bending the support strip 22 in front of the brush strip 21 towards the brush strip 21 through the first limiting plate 312, the height of the support strip 22 protruding from the outer surface of the roller body 10 near the first end cover 31 is reduced, which can reduce the abrasion between the support strip 22 and the ground near the end of the roller body 10, avoid the beating of the comb strip 300 on the support strip 22, thereby prolonging the service life of the support strip 22. And arranging at least part of the other support strip 22 in the first gap 312a, after the brush strip 21 finishes cleaning, the support strip 22 located in the first gap 312a can be in contact with the surface of the object to be cleaned, and the debris cleaned by the brush strip 21 can be swept away, which is suitable for occasions that pay more attention to cleaning effect.

[0135] In other possible implementations, in the same cleaning assembly 20, both support strips 22 are at least partially located between the first end cover 31 and the roller body 10, and the part of one support strip 22 located between the first end cover 31 and the roller body 10 is bent towards the brush strip 21, and the part of the other support strip 22 located between the first end cover 31 and the roller body 10 is bent away from the brush strip 21.

[0136] Figure 13 is an assembly diagram of a first end cover provided by an embodiment of the present application. As shown in the diagram, Figure 13 In the shown example, the brush strip 21 is located in the first gap 312a of the first limiting plate 312, and the support strips 22 in front of and behind the brush strip 21 are both located between the first limiting plate 312 and the outer side wall of the roller body 10. Among them, the part of the support strip 22 in front of the brush strip 21 located between the first limiting plate 312 and the outer side wall of the roller body 10 is bent towards the brush strip 21, and the part of the support strip 22 behind the brush strip 21 located between the first limiting plate 312 and the outer side wall of the roller body 10 is bent away from the brush strip 21.

[0137] By bending both support strips 22 at the first end of the roller body 10 through the first limiting plate 312, the height of the two support strips 22 protruding from the roller body 10 at this position is reduced, which is conducive to further improving the stability of the rotation of the roller body 10, and reducing the abrasion of the ends of the two support strips 22, and is suitable for occasions that pay more attention to prolonging the service life of the roller brush.

[0138] As shown in the diagram, Figure 13As shown, the outer side wall of the second limiting plate 313 is inclined, and the outer side wall of the second limiting plate 313 away from the side of the mounting disc 311 is inclined towards the direction close to the roller body 10.

[0139] During the operation of the cleaning device, the first end of the roller body 10 is more likely to be wrapped with hair and the like than other parts of the roller body 10. In this example, by setting the outer side wall of the second limiting plate 313 as an inclined surface, the hair and the like wrapped on the roller brush 200 and the first end cover 31 can be guided to gather at the lowest part of the inclined surface, facilitating the concentrated processing by the combing strip 300.

[0140] Figure 14 is a structural schematic diagram of a second end cover provided by an embodiment of the present application. As shown Figure 14 The side of the second end cover 32 close to the roller body 10 can have a plurality of seam covering ribs 321, and the plurality of seam covering ribs 321 are distributed in the circumferential direction. The seam covering rib 321 can be transitionally matched with the outer side wall of the roller body 10.

[0141] Figure 15 is a partial structural schematic diagram of a roller brush provided by an embodiment of the present application. As shown Figure 15 The seam covering rib 321 is matched with the shape of the outer side wall of the roller body 10 and is transitionally matched with the outer side wall of the roller body 10, for example, can be attached to the outer side wall of the roller body 10. The seam covering rib 321 is used to cover the gap between the roller body 10 and the second end cover 32 to avoid the hair from being stuck.

[0142] Figure 16 is a partial structural schematic diagram of a cleaning device provided by an embodiment of the present application. As shown Figure 16 The combing strip 300 includes a plurality of first combing teeth 301 and a plurality of second combing teeth 302, and the plurality of first combing teeth 301 and the plurality of second combing teeth 302 are distributed in the direction parallel to the axis of the roller body 10. The first combing teeth 301 are located at the first end of the roller body 10, and the length of the first combing teeth 301 is greater than the length of the second combing teeth 302.

[0143] The combing strip 300 is used to cooperate with the cleaning assembly 20 to clean the sundries on the cleaning assembly 20, so that the sundries are separated from the cleaning assembly 20. In this example, the inclined outer side wall of the second limiting plate 313 plays a role in gathering the hair and the like, and by setting the length of the first combing teeth 301 to be longer, the first combing teeth 301 can clean the hair gathered here. During the rotation of the roller brush 200, the first combing teeth 301 contact and pull the gathered hair, so that the hair is broken and separated from the roller brush 200, and finally is sucked into the suction port 100b, thereby avoiding the excessive winding of the hair on the roller brush 200. When part of the hair is difficult to be completely separated from the first end cover 31, the first end cover 31 and the roller body 10 can be disassembled to clean the hair completely.

[0144] During the rotation of the roller brush 200, the second comb teeth 302 strike each other against the support bar 22, thereby removing debris adhering to the support bar 22. In this example, the interference fit between the comb teeth 300 and the support bar 22 is 1mm to 3.5mm, for example, 2.5mm.

[0145] The interference fit between the comb tooth 300 and the support bar 22 refers to the length of the part of the comb tooth 300 that comes into contact with the support bar 22 during the rotation of the roller brush 200. That is, the tip of the comb tooth 300, a part of 1mm to 3.5mm in length, can come into contact with the support bar 22.

[0146] When the support bar 22 is struck by the comb bar 300, it will vibrate and generate noise. In this example, only a small portion of the second comb bar 302 strikes the support bar 22. This can ensure the effect of preventing hair from getting tangled while making the area of ​​the support bar 22 that is struck relatively small, thereby reducing the vibration of the support bar 22 and helping to reduce the noise generated when the cleaning device is working.

[0147] In addition, since the distance between the outer edge of the brush strip 21 and the outer edge of the support strip 22 is small, not exceeding 15mm, the support strip 22 may come into contact with the bristles 212 of the brush strip 21 during the vibration process. The bristles 212 can absorb some of the energy of the support strip 22, which slows down the vibration of the support strip 22 and allows the support strip 22 to quickly return to its original shape, which is beneficial to the elimination of noise.

[0148] The interference fit between the comb bar 300 and the brush bar 21 can be 1mm to 6mm, for example, 3.5mm. The interaction between the comb bar 300 and the brush bar 21 can remove debris stuck on the brush bar 21, improving cleaning efficiency.

[0149] When using the cleaning device, the opening of the roller brush mounting groove 100a should face the object to be cleaned. For example, when cleaning a carpet laid on the floor... Figure 3 As shown, the comb bar 300 can be located between the roller brush 200 and the air inlet 100b. The distance from the comb bar 300 to the opening of the roller brush mounting groove 100a is greater than the distance from the axis of the roller body 10 to the opening of the roller brush mounting groove 100a. That is, the height of the comb bar 300 is higher than the axis of the roller body 10.

[0150] In some examples, the height of the support strip 22 extending out of the opening of the rolling brush mounting groove 100a is not more than 0.5 mm, i.e. the interference between the support strip 22 and the ground in use is not more than 0.5 mm, for example, it can be 0.1 mm. In this way, the support strip 22 can be prevented from being deformed too much to generate too much radial force on the roller body 10. The height of the brush strip 21 extending out of the opening of the rolling brush mounting groove 100a is not more than 3 mm, for example, it can be 1 mm. In this way, the bristles 212 of the brush strip 21 can be prevented from being bent too much to affect the service life.

[0151] In some examples, the rotating speed of the rolling brush 200 in the cleaning device in use can be not more than 2000 revolutions per minute. In the related art, in order to achieve the cleaning effect, the rotating speed of the rolling brush in use is usually above 2400 revolutions per minute, which generates a large noise and shortens the service life of the rolling brush. In the present example, since the cleaning efficiency of the rolling brush 200 is relatively high, by reducing the rotating speed of the rolling brush 200, the noise generated by the cleaning device in use can be reduced while ensuring the cleaning effect, and the service life of the support strip 22 can be improved, thereby prolonging the service life of the rolling brush 200.

[0152] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A rolling brush applied to a cleaning device, comprising a roller body (10) and a plurality of cleaning assemblies (20), the cleaning assemblies (20) being arranged on the outer surface of the roller body (10) along the axial direction of the roller body (10), and the plurality of cleaning assemblies (20) being arranged at intervals along the circumferential direction of the roller body (10). The cleaning assembly (20) comprises a brush strip (21) and two support strips (22), the brush strip (21) and the two support strips (22) spirally extend from the first end of the roller body (10) to the second end of the roller body (10) respectively, and the brush strip (21) is located between the two support strips (22), the interval between the two support strips (22) in the same cleaning assembly (20) along the circumferential direction of the roller body (10) is smaller than the interval between the adjacent two cleaning assemblies (20) along the circumferential direction of the roller body (10). The distance R1 from the outer edge of the brush strip (21) to the axis of the roller body (10), the distance R2 from the outer edge of one of the two support strips (22) to the axis of the roller body (10), and the distance R3 from the outer edge of the other of the two support strips (22) to the axis of the roller body (10) satisfy the following relationship: R1 is greater than R2, and R1 is greater than R3.

2. The rolling brush of claim 1, wherein, The difference between R1 and R2 is not more than 3mm, and the difference between R1 and R3 is not more than 3mm.

3. The roll brush of claim 1 or 2, wherein, The rolling brush comprises two cleaning assemblies (20), and the surface of the roller body (10) has two support ribs (11) spirally extending along the axial direction of the roller body (10), the two support ribs (11) and the two cleaning assemblies (20) are alternately distributed along the circumferential direction of the roller body (10).

4. The roll brush of claim 3, wherein, The two cleaning assemblies (20) are arranged symmetrically about the center of the roller body (10), the two support ribs (11) are arranged symmetrically about the center of the roller body (10), and the distance from any one of the two support ribs (11) to the two cleaning assemblies (20) along the circumferential direction of the roller body (10) is equal.

5. The roll brush of claim 1 or 2, wherein, The surface of the roller body (10) has a first T-shaped groove (10a), the first T-shaped groove (10a) has a first fillet (10b) at the opening thereof, the radius of the first fillet (10b) is greater than a first radius threshold, the support strip (22) comprises a first mounting portion (221) and a support portion (222), the first mounting portion (221) is in a strip shape, the support portion (222) is connected to one side of the first mounting portion (221), the support portion (222) has a second fillet (223) at the connection with the first mounting portion (221), the radius of the second fillet (223) is greater than a second radius threshold, and the first mounting portion (221) is located in the first T-shaped groove (10a).

6. The roll brush of claim 1 or 2, wherein, Further comprising a first end cover (31) detachably connected to the first end of the roller body (10). At least one of the support bars (22) is inserted between the first end cover (31) and the roller body (10) in the same cleaning assembly (20), and the first end cover (31) is used to bend the part of the support bar (22) between the first end cover (31) and the roller body (10) towards the roller body (10).

7. The roll brush of claim 6, wherein, The first end cover (31) comprises a mounting disc (311) and a first limiting plate (312) connected to one side of the mounting disc (311), the mounting disc (311) is arranged opposite to the end face of the roller body (10), the first limiting plate (312) has a gap with the outer side wall of the roller body (10), at least one of the support bars (22) is located in the gap and abuts against the inner side wall of the first limiting plate (312).

8. The roll brush of claim 7, wherein, The first limiting plate (312) has a first notch (312a), and at least part of the brush bar (21) is located in the first notch (312a).

9. The roll brush of claim 8, wherein, In the same cleaning assembly (20), at least part of one of the support bars (22) is located in the first notch (312a); or, In the same cleaning assembly (20), both of the support bars (22) are at least partially located between the first end cover (31) and the roller body (10), and the part of one of the support bars (22) between the first end cover (31) and the roller body (10) is bent towards the brush bar (21), and the part of the other support bar (22) between the first end cover (31) and the roller body (10) is bent away from the brush bar (21).

10. The roll brush of claim 7, wherein, The first end cover (31) further comprises a plurality of second limiting plates (313) connected to the same side of the mounting disc (311) as the first limiting plate (312), the plurality of second limiting plates (313) are distributed along the edge of the mounting disc (311), the second limiting plates (313) are transitionally fitted with the outer side wall of the roller body (10), and the first limiting plate (312) is located between adjacent second limiting plates (313).

11. The roll brush of claim 10, wherein, The minimum gap between the second limiting plate (313) and the outer side wall of the roller body (10) is not more than 0.2mm.

12. A cleaning device comprising a machine body (100) and a roller brush (200) according to any one of claims 1-11, the machine body (100) has a roller brush mounting groove (100a), the roller brush (200) is located in the roller brush mounting groove (100a) and is rotationally connected with the machine body (100).

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