Roller brush and cleaning device

Abstract

A roller brush (10) and a cleaning device (100). The roller brush (10) comprises a roller body (11) and a plurality of brush strip groups (12). The plurality of brush strip groups (12) are arranged at intervals around the roller body (11), and each brush strip group (11) includes at least one bristle strip (121) and at least one flexible rubber strip (122); in each brush strip group (12), the rubber strip (122) and the bristle strip (121) are alternately arranged side by side, curvedly extending along an axis of the roller body (11). By providing both the rubber strip (122) and the bristle strip (121) to form the brush strip group (12), hair entanglement can be reduced while the cleaning effect is enhanced.

Description

[0001] The present application claims the priority to Chinese Patent Application No. 202311245939.X, filed with the China National Intellectual Property Administration on September 22, 2023 and entitled "ROLLER BRUSH AND CLEANING DEVICE", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

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

[0003] Cleaning devices can be used for sweeping the floor with a roller brush, so that hair and waste on the floor are swept into the cleaning device to keep the floor clean. However, when the cleaning device is used for cleaning a tufted wool carpet, since hair, pet hair and debris, etc., are prone to getting caught in the carpet tufts, edges of brush strips of the roller brush, which slide continuously over the surface of the carpet, can only clean away some debris but cannot extend deep enough into the tufts of the carpet to separate the soft hair, resulting in that the cleaning is not thorough enough.SUMMARY OF THE INVENTION

[0004] In view of this, it is necessary to provide a roller brush for thorough and deep cleaning.

[0005] A roller brush includes a roller body and a plurality of brush strip groups. The plurality of brush strip groups are arranged at intervals around the roller body, and each of the brush strip groups includes at least one bristle strip and at least one flexible rubber strip; in each of the brush strip groups, the rubber strips and the bristle strips are arranged alternately side by side, curvedly extending along an axis of the roller body.

[0006] It can be understood that by adding the bristle strips, the cleaning effect on a surface to be cleaned can be enhanced on the basis of the rubber strips, while reducing hair entanglement. Specifically, the rubber strips and the bristle strips are mounted on the roller body, and the roller brush rolls such that the rubber strips and the bristle strips alternately come into contact with the surface to be cleaned during cleaning, achieving a better cleaning effect. Moreover, the rubber strips can sweep the surface to be cleaned and support the separated hair to reduce hair entanglement.

[0007] In some embodiments, at least part of the bristle strip is higher than the rubber strip.

[0008] It can be understood that the bristle strips, which are higher than the rubber strips, can extend deep into the carpet to remove the hair, debris and other waste from the carpet.

[0009] In some embodiments, at least one of the bristle strips includes a first bristle layer and a second bristle layer; and the first bristle layer is close to the rubber strip, and the first bristle layer has a greater hardness than the second bristle layer.

[0010] It can be understood that the first bristle layer can provide support for the rubber strip when the rubber strip is bent, so that the rubber strip maintains the support effect on the hair as much as possible, to reduce hair entanglement.

[0011] In some embodiments, the first bristle layer has a bristle density not higher than that of the second bristle layer, and bristles of the first bristle layer are not smaller than bristles of the second bristle layer in diameter.

[0012] It can be understood that the first bristle layer has a smaller density, to reduce hair entanglement. The larger diameter of the bristles of the first bristle layer can enhance the hardness, thus improving the support effect.

[0013] In some embodiments, one end of the roller brush along its own axis is defined as a driving end and the other end is defined as a driven end; and each of the brush strip groups extends helically from the driven end to the driving end.

[0014] It can be understood that the helical extension enables hair to slide from a start end of the brush strip group to a tail end of the brush strip group, that is, the hair can slide from the driven end to the driving end, so that the hair is collected at the driving end as the roller brush rotates, facilitating centralized cleaning.

[0015] In some embodiments, the rubber strips at the driving end are each provided with a first taper structure tapering away from the driven end along the axis of the roller body.

[0016] It can be understood that the rubber strip at the driving end being provided with the first taper structure can further facilitate the sliding of the hair to the driving end, thereby further facilitating centralized cleaning. Moreover, it is also possible to reduce the friction with the carpet, facilitating the protection of the driving end.

[0017] In some embodiments, the roller brush further includes an end cap, where the end cap is mounted at the driving end, and a plurality of pressing portions extend from the end cap, the plurality of pressing portions being spaced apart circumferentially along the end cap; and the rubber strips are each folded to form the first taper structure pressed between the pressing portions and the roller body.

[0018] It can be understood that the end cap can fix and press the rubber strip by means of the pressing portions, and the folded rubber strip facilitates the formation of the first taper structure.

[0019] In some embodiments, the pressing portions are each configured as a second taper structure tapering towards the driven end along the axis of the roller body.

[0020] It can be understood that the configuration of the pressing portions as the second taper structure further facilitates the hair sliding to the driving end, and facilitates centralized cleaning of the hair.

[0021] In some embodiments, the roller body defines a plurality of first mounting grooves and a plurality of second mounting grooves, the plurality of first mounting grooves and the plurality of second mounting grooves being alternately arranged around the roller body; the rubber strips are mounted in the respective first mounting grooves and the bristle strips are mounted in the respective second mounting grooves; and a gap is provided between the rubber strip and a bottom of the respective first mounting groove at the driving end.

[0022] It can be understood that the rubber strips can be mounted and limited by means of the first mounting grooves and the bristle strips can be mounted and limited by means of the second mounting grooves. Moreover, thanks to the gap between the rubber strip arranged at the driving end and the bottom of the first mounting groove, there is a margin when the rubber strip is fitted with the end cap, thus avoiding too tight press-fitting and facilitating the protection of the rubber strip.

[0023] In some embodiments, in each of the brush strip group, the bristle strip and the rubber strip that are adjacent are arranged in parallel or inclined relative to each other; and a distance between a top of the bristle strip and a top of the rubber strip is not greater than 15 mm circumferentially along the roller body.

[0024] It can be understood that the parallel arrangement of the bristle strip and the rubber strip facilitates the installation. The arrangement of the bristle strip and the rubber strip at an angle relative to each other can reduce the distance between the tops of the two, so as to reduce hair entanglement. Furthermore, since the distance between the tops of the two is not greater than 15 mm, the rubber strip adjacent to the bristle strip can effectively support the hair in the bristle strip, so that the hair can be prevented from extending deep into the bottom of the bristle strip and becoming entangled. Moreover, the bristle strip can support the rubber strip, thus preventing deformation of the rubber strip.

[0025] In some embodiments, a connecting line between an end of the bristle strip that is remote from the roller body and a centre of the roller body is defined as a first straight line, a straight line in a length direction of the bristle strip is defined as a second straight line, and an included angle between the first straight line and the second straight line ranges from 0° to 45°; or a connecting line between an end of the rubber strip that is remote from the roller body and a centre of the roller body is defined as a first straight line, a straight line in a length direction of the rubber strip is defined as a second straight line, and an included angle between the first straight line and the second straight line ranges from 0° to 45°.

[0026] It can be understood that this arrangement ensures that the bristle strip and the rubber strip can face towards the surface to be cleaned during cleaning, thereby realizing a sweeping function normally.

[0027] The present application further provides a cleaning device, including a driving member, a combing structure, and the roller brush as described above. One end of the roller brush that is connected to the driving member is defined as a driving end and the other end of the roller brush is defined as a driven end; and the combing structure includes a plurality of comb teeth spaced along the axis of the roller brush and configured to remove hair from the roller brush.

[0028] It can be understood that the driving member may supply power for the rotation of the roller brush to realize sweeping by the roller brush. Hair on the roller brush may be removed by the comb teeth of the combing structure that cooperate with the roller brush, thereby preventing hair from becoming entangled on the roller brush.

[0029] In some embodiments, the cleaning device includes a hair blocking end cap, the hair blocking end cap being detachably connected to the driving end of the roller brush.

[0030] It can be understood that the hair blocking end cap can block the hair from entering other structures of the cleaning device, and the detachable arrangement brings convenience for a user to directly detach the hair blocking end cap for cleaning.

[0031] In some embodiments, the hair blocking end cap on its one side remote from the roller body along the axis of the roller body defines a stop groove, and the stop groove is concave radially and extends circumferentially along the hair blocking end cap.

[0032] It can be understood that, by means of the stop groove, hair that slides into the hair blocking end cap can be concentrated and limited in the stop groove, thus ensuring normal operation of other components.BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To describe the technical solutions in embodiments of the present application or in the conventional art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the conventional art. It is clear that the accompanying drawings in the following descriptions are merely some embodiments of the present application, and those of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts. Fig. 1 is a structural schematic diagram of a roller brush according to the present application; Fig. 2 is a side view of the roller brush according to the present application; Fig. 3 is a sectional view of the roller brush according to the present application; Fig. 4 is a front view of the roller brush according to the present application; Fig. 5 is a transverse sectional view of a cleaning device according to the present application; Fig. 6 is a longitudinal sectional view of the cleaning device according to the present application; and Fig. 7 is a structural schematic diagram of a hair blocking end cap of the cleaning device according to the present application.

[0034] List of reference signs: 100. Cleaning device; 1001. Air inlet; 1002. Main suction port; 10. Roller brush; 101. Driving end; 102. Driven end; 103. Gap; 11. Roller body; 111. First mounting groove; 112. Second mounting groove; 12. Brush strip group; 121. Bristle strip; 1211. First bristle layer; 1212. Second bristle layer; 122. Rubber strip; 1221. First taper structure; 13. End cap; 131. Pressing portion; 20. Driving member; 30. Combing structure; 31. Comb tooth; 40. Hair blocking end cap; 41. Stop groove; 50. Transmission assembly; 51. First pulley; 52. Synchronous belt; 53. Second pulley; 60. Cushion pad.DETAILED DESCRIPTION OF EMBODIMENTS

[0035] In order to make the above objectives, features and advantages of the present application more clearly understood, particular embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the essence of the present application. Therefore, the present application is not limited by the particular embodiments disclosed below.

[0036] It should be noted that when an assembly is referred to as being "fixed to" or "disclosed on" another assembly, it may be directly on the other assembly or an intermediate assembly may exist. When one assembly is considered to be "connected" to another assembly, the assembly may be directly connected to the other assembly or an intermediate assembly may exist simultaneously. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are for the purpose of illustration only and do not represent any unique implementation.

[0037] In addition, the terms "first" and "second" are merely used for the purpose of illustration, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three and so on, unless otherwise specifically defined.

[0038] In the present application, unless otherwise explicitly specified and defined, a first feature being "on" or "under" a second feature may be the first feature being in direct contact with the second feature, or the first feature being in indirect contact with the second feature via an intermediate medium. Furthermore, the first feature being "over", "above" and "on top of" the second feature may be the first feature being directly above or obliquely above the second feature, or only means that the level of the first feature is higher than the second feature. The first feature being "underneath", "below" and "beneath" the second feature may be the first feature being directly below or obliquely below the second feature, or only means that the level of the first feature is less than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more relevant items listed.

[0040] Referring to Figs. 1 to 4, the present application provides a roller brush 10. The roller brush 10 includes a roller body 11 and a plurality of brush strip groups 12. The plurality of brush strip groups 12 are arranged at intervals around the roller body 11, and each of the brush strip groups 12 includes at least one bristle strip 121 and at least one flexible rubber strip 122. In each of the brush strip groups 12, the rubber strip 122 and the bristle strip 121 are alternately arranged side by side, curvedly extending along an axis of the roller body 11.

[0041] In this way, the plurality of brush strip groups 12 are provided to enhance the sweeping effect, and the rotation of the roller body 11 enables the plurality of brush strip groups 12 to alternately come into contact with and sweep a surface to be cleaned. During sweeping, each of the brush strip groups 12 includes at least one bristle strip 121 and at least one flexible rubber strip 122, the rubber strip 122 may rub against the surface to be cleaned to sweep waste such as hair. Moreover, the rubber strip 122 also has a support effect on the hair to reduce the degree to which the hair is embedded in the bristle strip 121, thus facilitating the sliding of the hair in a bending direction of the brush strip group 12 and enhancing the anti-entangling effect on hair. The bristle strip 121 may rub against the surface to be cleaned with a plurality of bristles on the basis of the rubber strip 122, so as to remove debris such as hair, thereby enhancing the cleaning effect. Further, in each of the brush strip groups 12, the bristle strip 121 adjacent to the rubber strip 122 may support the rubber strip 122, thereby ensuring the support effect of the rubber strip 122 to hair. In summary, by providing both the bristle strip 121 and the rubber strip 122, deep cleaning can be realized while reducing hair entanglement.

[0042] In some embodiments, the roller brush 10 includes three brush strip groups 12, the three brush strip groups 12 being spaced circumferentially along the roller brush 10 to alternately sweep the surface to be cleaned, thereby helping to ensure the sweeping frequency and the cleaning effect. In other embodiments, the roller brush 10 may further include two, four, etc. brush strip groups 12, depending on the sizes of the roller body 11 and the brush strip groups 12 and the specific operating conditions, which are not specifically limited herein.

[0043] In some embodiments, at least part of the bristle strip 121 is higher than the rubber strip 122. In this way, the bristle strip 121 can extend deep into the surface to be cleaned to clean it, and hair hidden in the surface to be cleaned can be removed to achieve deep cleaning.

[0044] In some embodiments, at least one of the bristle strips 121 includes a first bristle layer 1211 and a second bristle layer 1212; and the first bristle layer 1211 is close to the rubber strip 122, and the first bristle layer 1211 has a greater hardness than the second bristle layer 1212. In this way, the first bristle layer 1211 is close to the rubber strip 122 and has a greater hardness, and can provide effective support when the rubber strip 122 is bent, so that the bent rubber strip 122 can be restored quickly to continue effective sweeping. Illustratively, bristles of the first bristle layer 1211 may optionally be made of nylon filaments, and bristles of the second bristle layer 1212 may optionally be made of soft fluff, as illustrated by way of example only, which is not specifically limited.

[0045] In practical applications, in a direction of rotation of the roller body 11, in each of the brush strip groups 12, the rubber strip 122 may be arranged before the bristle strip 121. That is, the rubber strip 122 first comes into contact with the surface to be cleaned, and the rubber strip 122 may cover a root of the bristle strip 121, facilitating the sweeping of the hair by means of the top of the bristle strip 121, and the support of the swept hair by means of the rubber strip 122, thereby avoiding direct contact between the hair and the root of the bristle strip 121, and reducing hair entanglement. In other embodiments, in the direction of rotation of the roller body 11, in each of the brush strip groups 12, it is also possible that the bristle strip 121 is arranged before the rubber strip 122. That is, the bristle strip 121 first comes into contact with the surface to be cleaned, so that the bristle strip 121 can clear out all the hair, facilitating an improvement in the cleaning effect. This should be selected according to the actual operating conditions.

[0046] As shown in Fig. 1, in some embodiments, one end of the roller brush 10 along its own axis is defined as a driving end 101 and the other end is defined as a driven end 102; and the rubber strips 122 at the driving end 101 are each provided with a first taper structure 1221. The first taper structure 1221 tapers away from the driven end 102 along the axis of the roller body 11. Specifically, the portion of the driving end 101 close to the driven end 102 is defined as a tail of the driving end 101, the portion of the driving end 101 remote from the driven end 102 is defined as a head of the driving end 101, and the first taper structure 1221 tapers along the axis of the roller body 11 from the tail of the driving end 101 towards the head of the driving end 101. Specifically, the taper start end of the first taper structure 1221 along the axis of the roller body 11 is defined as the tail of the driving end 101.

[0047] In this way, in practical applications, the driving end 101 of the roller brush 10 is connected to a driving member 20. The provision of the first taper structure 1221 enables the hair to slide to the driving end, facilitating the collection of the hair at the head of the driving end 101 for subsequent centralized cleaning of the hair. In some embodiments, hair on the roller brush 10 needs to be cleaned using a combing structure 30, and can be removed by comb teeth 31 of the combing structure 30; and the provision of the first taper structure 1221 can prevent the striking from the combing structure 30 and reduce the friction with the surface to be cleaned, facilitating the protection of the driving end 101 of the rubber strip 122.

[0048] As shown in Fig. 1, in some embodiments, the roller brush 10 further includes an end cap 13. The end cap 13 is mounted at the driving end 101, and a plurality of pressing portions 131 extend from the end cap 13. The plurality of pressing portions 131 are spaced apart circumferentially along the end cap 13. The rubber strips 122 are each folded to form the first taper structure 1221 pressed between the pressing portions 131 and the roller body 11. In this way, the end cap 13 may press one end of the rubber strip 122 against the roller body 11 by means of the pressing portions 131, to fix the rubber strip 122 and prevent the rubber strip 122 from sliding. In a press-fit process, the rubber strip 122 is folded over and then press-fitted to form the first taper structure 1221 as described above. In an actual press-fit process, the pressing length of the pressing portions 131 on the rubber strip 122 is not less than 5 mm, to ensure the pressing effect and prevent the rubber strip 122 from releasing. Illustratively, the pressing length of the pressing portions 131 on the rubber strip 122 is set to 5 mm, 10 mm or 20 mm. In addition, the end cap 13 adopts a detachable connection, such as a snap-fit connection, when connected to the roller body 11, so that the end cap 13 can be detached at any time for cleaning hair entangled at the driving end 101.

[0049] More specifically, the rubber strip 122 has an outer layer made of cloth, and inner layer made of rubber. The cloth wraps around the rubber to protect it. An outer surface where the cloth is located is a wrapping surface, the wrapping surface of the rubber strip 122 is fitted with an inner side of the pressing portion 131 to ensure that the edge of the end cap 13 will not be quickly abraded. A top edge of the cloth needs to be 0 to 1 mm above the rubber, for example, 0.2 mm, 0.5 mm or 1 mm. The hardness of the rubber strip 122 preferably ranges from 20 to 60°, such as 20°, 30° or 60°. The material of the cloth is preferably nylon or polyester that has a high knitting density and has a thickness of 0.3 to 0.4 mm. For example, the thickness may be 0.3 mm, 0.35 mm or 0.4 mm.

[0050] As shown in Fig. 1, in some embodiments, the pressing portions 131 are each configured as a second taper structure tapering towards the driven end 102 along the axis of the roller body 11. With such an arrangement, hair may also slide to the driving end, so that the hair is collected at the driving end 101. The second taper structure and the first taper structure 1221 together form an annular groove that extends circumferentially along the roller body 11, and it is easy to clean the hair located at the bottom of the groove.

[0051] As shown in Fig. 2, in some embodiments, the roller body 11 defines a plurality of first mounting grooves 111 and a plurality of second mounting grooves 112, the plurality of first mounting grooves 111 and the plurality of second mounting grooves 112 being alternately arranged around the roller body 11; the rubber strips 122 are mounted in the respective first mounting grooves 111 and the bristle strips 121 are mounted in the respective second mounting grooves 112; and a gap 103 is provided between the rubber strip 122 and a bottom of the respective first mounting groove 111 at the driving end 101, and the rubber strip 122 at the bottom of the driven end 102 fits against the bottom of the first mounting groove 111.

[0052] In this way, the provision of the first mounting grooves 111 facilitates the mounting of the rubber strips 122, and the provision of the second mounting grooves 112 facilitates the mounting of the bristle strips 121. Further, the provision of the gap 103 between the rubber strip 122 at the driving end 101 and the bottom of the first mounting groove 111 allows a certain margin between the rubber strip 122 and the first mounting groove 111, so that the rubber strip 122 can move in the first mounting groove 111 when the rubber strip 122 is folded and pressed, facilitating a reduction in stress concentration to avoid that the rubber strip 122 is pressed too tightly, thereby protecting the rubber strip 122. Moreover, this arrangement also makes it possible that the rubber strip 122 at the driving end 101 can move backwards when it comes into contact with the surface to be cleaned, facilitating a reduction in the friction to further protect the rubber strip 122.

[0053] In some embodiments, it is possible that one end of the rubber strip 122 along its length direction is thinner, and the thinner end is mounted at the driving end 101, so as to provide the gap 103 between the rubber strip 122 at the driving end 101 and the bottom of the first mounting groove 111. In some embodiments, it is also possible that the first mounting groove 111 at the driving end 101 is deeper, to provide the gap 103 at the driving end 101 between the rubber strip 122 and the bottom of the first mounting groove 111.

[0054] As shown in Figs. 1 to 4, in some embodiments, each of the brush strip groups 12 extends helically from the driven end 102 to the driving end 101. In this way, hair may slide in the helical direction. Since the driven end 102 is the start end of the brush strip group, and the driving end 101 is the tail end of the brush strip group, the hair slides to the driving end 101, facilitating the collection of the hair at the driving end 101 and thus the centralized cleaning of the hair at the driving end 101. Specifically, a stop member may be mounted at the start end of the brush strip group to fix the rubber strip 122 and prevent the rubber strip 122 from moving in a helical direction to the driving end 101.

[0055] As shown in Fig. 2, in some embodiments, the rubber strip 122 includes a first extension section and a second extension section that are integrally formed and arranged at an angle to form a T-shaped structure. Correspondingly, the first mounting groove 111 is also configured to be T-shaped. The first extension section is mounted to the bottom of the first mounting groove 111, and the second extension section extends out of the first mounting groove 111 for sweeping. The connection between the first extension section and the second extension section has a rounded corner or chamfer to reduce stress concentration so as to avoid tearing at the connection. Correspondingly, the bristle strip 121 and the second mounting groove 112 may also configured to be T-shaped. The root of each bristle is fixed to a load-bearing structure which is mounted to the bottom of the second mounting groove 112. The bristles extend out of the second mounting groove 112 for sweeping.

[0056] As shown in Fig. 2, in some embodiments, the brush strip group 12 has a helix rotation angle α. The rubber strip 122 in the brush strip group 12 is illustrated as an example, where an angular extent occupied circumferentially along the roller body 11 by the profile of the projection of one rubber strip 122 along the axis of the roller body 11 is the helix rotation angle α, where 90° ≤ α < 180°. In this way, it is ensured that the brush strip group 12 can form a large helix to ensure that hair can slide in the helical direction. Moreover, when the roller brush 10 cooperates with the combing structure 30, the length of the portion of the rubber strip 122 that is struck by the combing structure 30 at a single time can be reduced to reduce the impact force of the combing structure 30 on the rubber strip 122. Illustratively, α = 90°, 105° or 130°. In addition, as shown in Fig. 4, the brush strip group 12 further has a helix lead angle β. Taking the rubber strip 122 as an example, the helix lead angle β is an included angle between a tangent line of the rubber strip 122 as it is helically wound and the radial direction of the roller body 11, where 0° < β < 90°. Illustratively, α = 30°, 45° or 60°.

[0057] As shown in Fig. 2, in some embodiments, the radius of gyration of the bristle strip 121 is defined as a, and the radius of gyration of the rubber strip 122 is defined as b, where they satisfy: 0 mm < a - b ≤ 10 mm. That is, the end of the bristle strip 121 that faces away from the roller body 11 in the radial direction of the roller body 11 is higher than the end of the rubber strip 122 that faces away from the roller body 11 in the radial direction of the roller body 11. As the roller body 11 rotates, the bristle strip 121 can carry out deep sweeping to remove hair in the deep area. In some embodiments, a - b = 1 mm, 6 mm or 10 cmm.

[0058] In some embodiments, the radius of gyration of the bristle strip 121 is defined as a, and the radius of gyration of the rubber strip 122 is defined as b, where they satisfy: 1 mm ≤ a - b ≤ 5 mm. Illustratively, a - b = 1 mm, 3 mm or 5 mm.

[0059] As shown in Fig. 3, in some embodiments, in each of the brush strip groups 12, the bristle strip 121 and the rubber strip 122 that are adjacent are inclined relative to each other. That is, a distance between a top of the bristle strip 121 and a top of the rubber strip 122 is smaller than a distance between a bottom of the bristle strip 121 and a bottom of rubber strip 122. With such an arrangement, hair is less likely to go deep into the bottom of the bristle strip 121, thereby reducing hair entanglement. In other embodiments, in each of the brush strip groups 12, the bristle strip 121 and the rubber strip 122 that are adjacent may be arranged in parallel.

[0060] In some embodiments, in each of the brush strip groups 12, the distance between the top of the bristle strip 121 and the top of the rubber strip 122 is not greater than 15 mm circumferentially along the roller body 11. In this way, since the first bristle layer 1211 is arranged close to the rubber strip 122, the distance between the first bristle layer 1211 and the rubber strip 122 is not greater than 15 mm, and the distance between the two is small, so that it is possible to ensure the support effect of the rubber strip 122 on the hair, prevent the hair from being embedded deep in the bristles of the first bristle layer 1211, and ensure the anti-entangling effect. Moreover, it is also possible to ensure the effective support of the first bristle layer 1211 for the rubber strip 122, so that the rubber strip 122 can be quickly restored after bending deformation, facilitating continued sweeping. Vibration of the flexible rubber strip 122 is also reduced, the vibration amplitude is dampened quickly, and the duration of noise is shortened so as to realize vibration damping and noise reduction. Illustratively, the distance between the first bristle layer 1211 and the rubber strip 122 in each brush strip group 12 is set to be 2 mm, 5 mm, or 15 mm. In some cases, in each of the brush strip groups 12, the bristles in the first bristle layer 1211 may also be staggered with the rubber strip 122.

[0061] In some embodiments, the first bristle layer 1211 has a bristle density lower than that of the second bristle layer 1212, and bristles of the first bristle layer 1211 are larger than bristles of the second bristle layer 1212 in diameter. In this way, since the first bristle layer 1211 is harder, once entangled with the hair, it is easy to become more and more tightly entangled with the hair. Therefore, the bristles of the first bristle layer 1211 are relatively sparse, so that it is possible to reduce entanglement of hair on the first bristle layer 1211, and improve the anti-entangling effect on hair while ensuring that the rubber strip 122 in the same brush strip group 12 is effectively supported. Moreover, the relatively large diameter of the bristles of the first bristle layer 1211 can increase its hardness, thus improving the support effect on the rubber strip 122. Of course, the present application does not exclude the case where the bristle density of the first bristle layer 1211 and the bristle density of the second bristle layer 1212 are set to be the same density, nor does it exclude the case where the diameter of the bristles of the first bristle layer 1211 and the diameter of the bristles of the second bristle layer 1212 are set to be the same diameter.

[0062] In some embodiments, the bristle density of the first bristle layer 1211 is set in a range of 10 to 100 pieces / cm, and the bristle density of the second bristle layer 1212 is set in a range of 400 to 2000 pieces / cm. The diameter of the bristles of the first bristle layer 1211 is set in a range of 0.1 to 0.25 mm, and the diameter of the bristles of the second bristle layer 1212 is set in a range of 0.05 to 0.12 mm. Illustratively, the bristle density of the first bristle layer 1211 may be 10 pieces / cm, 30 pieces / cm, or 50 pieces / cm; and the bristle density of the second bristle layer 1212 may be 400 pieces / cm, 1000 pieces / cm, or 2000 pieces / cm. The diameter of the bristles of the first bristle layer 1211 may be 0.1 mm, 0.15 mm, or 0.25 mm; and the diameter of the bristles of the second bristle layer 1212 may be 0.05 mm, 0.08 mm or 0.12 mm.

[0063] Further, a connecting line between an end the bristle strip 121 that is remote from the roller body 11 and a centre of the roller body 11 is defined as a first straight line, a straight line in a length direction of the bristle strip 121 is defined as a second straight line, and an included angle ϕ between the first straight line and the second straight line ranges from 0° to 45° (excluding 0°); or a connecting line between an end of the rubber strip 122 that is remote from the roller body 11 and a centre of the roller body 11 is defined as a first straight line, a straight line in a length direction of the rubber strip 122 is defined as a second straight line, and an included angle ϕ between the first straight line and the second straight line ranges from 0° to 45° (excluding 0°). Such an arrangement can ensure that the rubber strip 122 and the bristle strip 121 both face towards the surface to be cleaned during sweeping so that the rubber strip 122 and the bristle strip 121 can be brought into contact with the surface to be cleaned to realize normal sweeping. Illustratively, the included angle ϕ between the first straight line and the second straight line may be set to 20°, 30° or 45°.

[0064] As shown in Fig. 3, the rubber strip 122 is further illustrated as an example, and as shown in the figure, the first straight line is the line connecting the two points M and O, and the second straight line is the line connecting M and N. The roller brush 10 has a lowest point of the circumference of rotation, i.e. a point closest to the surface to be cleaned, during rotation. In the direction of rotation of the roller brush 10, if the point M reaches the lowest point before the point N, it indicates that the included angle ϕ between the first straight line and the second straight line is an active angle. At this time, the bristle strip 121 and the rubber strips 122 are respectively inserted into hair tufts on the surface to be cleaned, which have a large force, and can remove the hair or waste in the deep area, thus achieving effective cleaning. Moreover, the load on the driving member 20 is relatively large at this time, which is adaptable to the case where the demand for cleaning is high and the power margin of the driving member 20 is sufficient. In the direction of rotation of the roller brush 10, if the M point reaches the lowest point after the N point, it indicates that the included angle ϕ between the first straight line and the second straight line is a passive angle. At this time, the bristle strip 121 and the rubber strips 122 slide over the surface to be cleaned, which have a relatively small acting force on the surface to be cleaned, resulting in the cleaning effect not as good as the state at the active angle. But the load on the driving member 20 is relatively small, which is adaptable to the case where the demand for cleaning is low and the power of the driving member 20 is insufficient.

[0065] As shown in Figs. 5 to 7, the present application further provides a cleaning device 100. The cleaning device 100 includes a driving member 20, a combing structure 30, and the roller brush 10 as described above. One end of the roller brush 10 that is connected to the driving member 20 is defined as a driving end 101 and the other end of the roller brush 10 is defined as a driven end 102; and the combing structure 30 includes a plurality of comb teeth 31 spaced along the axis of the roller brush 10 and configured to remove hair from the roller brush 10.

[0066] In this way, the driving member 20 can supply power for the rotation of the roller brush 10. During the rotation of the roller brush 10, the brush strip groups 12 on the roller brush 10 first sweep the surface to be cleaned, specifically sweep the dust, debris, hair, etc. on the surface to be cleaned into the cleaning device 100; then, the brush strip groups 12 cooperate with the combing structure 30, and the comb teeth 31 of the combing structure 30 may remove hair from the brush strip groups 12, thereby reducing hair entanglement.

[0067] As shown in Fig. 5, in some embodiments, the cleaning device 100 further includes a transmission assembly 50. The transmission assembly 50 is connected between the driving member 20 and the roller body 11 of the roller brush 10 to transmit power from the driving member 20 to the roller body 11, thus realizing rotation of the roller body 11. In some embodiments, the driving member 20 is a motor; the transmission assembly 50 includes a first pulley 51, a second pulley 53, and a synchronous belt 52; a motor shaft runs through the first pulley 51 and transmits power to the first pulley 51; and the first pulley 51 transmits the power to the second pulley 53 by means of the synchronous belt 52, and the second pulley 53 is connected to an input shaft of the roller body 11 to transmit the power to the roller body 11, thereby driving the roller body 11 to rotate.

[0068] As shown in Figs. 5 and 7, in some embodiments, the cleaning device 100 includes a hair blocking end cap 40. The hair blocking end cap 40 is mounted at the driving end 101 of the roller brush 10, and the hair blocking end cap 40 is detachably connected to the driving end 101 of the roller brush 10. The hair blocking end cap 40 at the driving end 101 is arranged between the end cap 13 and the second pulley 53. In this way, the hair blocking end cap 40 can block the hair, preventing the hair from entering the driving member 20 and transmission members, and avoiding interference with other components. The detachable connection allows the user to manually detach the hair blocking end cap 40 for hair cleaning, and is easy to operate. A gap between an edge of the hair blocking end cap 40 at the driving end 101 and an inner wall of a housing of the cleaning device 100 is not greater than 0.2 mm, thus effectively preventing the hair from entering to cause clogging or other malfunction. In other embodiments, a hair blocking end cap 40 is also mounted at the driven end 102 to prevent hair from collecting and entangling at the driven end 102.

[0069] As shown in Figs. 5 and 7, in some embodiments, along the axis of the roller body 11, the hair blocking end cap 40 on its one side remote from the roller body 11 along the axis of the roller body (11) defines a stop groove (41, and the stop groove 41 is concave radially and extends circumferentially along the hair blocking end cap 40. In this way, when the hair slides along the surface of the hair blocking end cap 40 to the transmission assembly 50, it is possible to stop the movement of the hair by means of the stop groove 41 so that the hair is stuck within the stop groove 41, thereby preventing the hair from entering the transmission assembly 50, and facilitating the normal operation of the transmission assembly 50 and the driving member 20.

[0070] In some embodiments, the amount of interference between each comb tooth 31 and the rubber strip 122 is in a range of 1 mm to 3.5 mm, and the amount of interference between each comb tooth 31 and the bristle strip 121 is in a range of 1 mm to 6 mm. The amount of interference is the length of the comb tooth 31 in contact with the rubber strip 122 or the bristle strip 121. In this way, it is possible to ensure that the comb teeth 31 can clean hair from the rubber strip 122 and the bristle strip 121, while the striking degree of the comb teeth 31 to the rubber strip 122 is reduced, facilitating a reduction in vibration and noise. Specifically, the amount of interference between each comb tooth 31 and the rubber strip 122 is 1 mm, 2 mm or 3.5 mm; the amount of interference between each comb tooth 31 and the bristle strip 121 is 1 mm, 4 mm or 6 mm.

[0071] As shown in Fig. 5, in some embodiments, in the radial direction of the roller body 11, the comb tooth 31 close to the driving end 101 of the roller body 11 has a length greater than the length of the comb tooth 31 facing towards the rest of the roller body 11. This is because the rubber strip 122 at the driving end 101 is provided with the first taper structure 1221, and the surface of the first taper structure 1221 has a large distance from tooth ends of the comb teeth 31, so that setting the comb teeth 31 facing towards the driving end 101 of the roller body 11 to be relatively long facilitates the cleaning of the hair at the driving end 101, thereby avoiding hair entanglement at the driving end 101. Specifically, the minimum distance of the comb teeth 31 at the driving end 101 from the end cap 13 is less than or equal to 0.3 mm to ensure the hair cleaning effect of the comb teeth 31. Illustratively, the distance of the comb teeth 31 at the driving end 101 from the end cap 13 is 0.1 mm, 0.2 mm or 0.3 mm.

[0072] As shown in Fig. 6, in some embodiments, the cleaning device 100 is provided with an air inlet 1001 at the bottom of the roller brush 10 in a first direction; and the cleaning device 100 is provided with a dust collection chamber, a main suction port 1002 in communication with the dust collection chamber is provided between the dust collection chamber and the roller brush 10, and the air inlet 1001 is in communication with the main suction port 1002.

[0073] In this way, the air inlet 1001 facilitates feeding of air at the bottom of the roller brush 10, and a power source arranged at the main suction port 1002 may draw air in, so that when the roller brush 10 sweeps the surface to be cleaned, the swept waste may be sucked into the dust collection chamber along with the air under the action of suction. During cleaning, hair that slides down in the helical direction of the brush strip groups 12 may be sucked into the dust collection chamber in the downward sliding process. Based on this, the rotational speed of the roller brush 10 can be appropriately reduced. At this time, the sliding speed of the hair is relatively reduced, and the hair may be sucked into the dust collection chamber during sliding along the helical direction of the brush strip group 12, facilitating a reduction in hair accumulation and entanglement. Moreover, the reduction of the rotational speed of the roller brush 10 can reduce the strength and frequency of the combing structure 30 striking the rubber strip 122, facilitating a reduction in vibration and noise and protecting the rubber strip 122, and correspondingly, the rotational speed of the motor may be set between 1200 and 3500 revolutions per second. For example, the rotational speed of the motor may be set to 1200 revolutions per second, 2400 revolutions per second or 3500 revolutions per second, depending on the actual operating conditions. A cushion pad 60 may also be provided between the combing structure 30 and the main suction port 1002 to further reduce vibration and noise. In addition, when the combing structure 30 combs the brush strip groups 12, the combed hair may also be sucked into the dust collection chamber. Specifically, the combing structure 30 is arranged between the roller brush 10 and the main suction port 1002, and in the direction of gravity, the combing structure 30 is slightly higher than the central axis of the roller brush 10. The roller brush 10 cooperates with the suction force to realize thorough cleaning of the surface to be cleaned.

[0074] The technical features of the above embodiments may be combined arbitrarily. For the purpose of simplicity in description, all the possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction among the combinations of these technical features, they shall all fall within the scope of the specification.

[0075] The above embodiments merely represent several implementations of the present application, giving specifics and details thereof, but should not be understood as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art could also make several alterations and improvements without departing from the spirit of the present application and these would all fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be in accordance with the appended claims.

Claims

1. A roller brush, characterized by comprising: a roller body (11); and a plurality of brush strip groups (12), wherein the plurality of brush strip groups (12) are arranged at intervals around the roller body (11), and each of the brush strip groups (12) comprises at least one bristle strip (121) and at least one rubber strip (122); in each of the brush strip groups (12), the rubber strip (122) and the bristle strip (121) are alternately arranged side by side, curvedly extending along an axis of the roller body (11).

2. The roller brush according to claim 1, characterized in that at least part of the bristle strip (121) is higher than the rubber strip (122).

3. The roller brush according to claim 1, characterized in that at least one of the bristle strips (121) comprises a first bristle layer (1211) and a second bristle layer (1212); and the first bristle layer (1211) is close to the rubber strip (122), and the first bristle layer (1211) has a greater hardness than the second bristle layer (1212).

4. The roller brush according to claim 3, characterized in that the first bristle layer (1211) has a bristle density not higher than that of the second bristle layer (1212), and bristles of the first bristle layer (1211) are not smaller than bristles of the second bristle layer (1212) in diameter.

5. The roller brush according to claim 1, characterized in that one end of the roller brush along its own axis is defined as a driving end (101) and the other end is defined as a driven end (102); and each of the brush strip groups (12) extends helically from the driven end (102) to the driving end (101).

6. The roller brush according to claim 5, characterized in that the rubber strips (122) at the driving end (101) are each provided with a first taper structure (1221) tapering away from the driven end (102) along the axis of the roller body (11).

7. The roller brush according to claim 6, characterized by further comprising an end cap (13), wherein the end cap (13) is mounted at the driving end (101), and a plurality of pressing portions (131) extend from the end cap (13), the plurality of pressing portions (131) being spaced apart circumferentially along the end cap (13); and the rubber strips (122) are each folded to form the first taper structure (1221) pressed between the pressing portions (131) and the roller body (11).

8. The roller brush according to claim 7, characterized in that the pressing portions (131) are each configured as a second taper structure tapering towards the driven end (102) along the axis of the roller body (11).

9. The roller brush according to claim 5, characterized in that the roller body (11) defines a plurality of first mounting grooves (111) and a plurality of second mounting grooves (112), the plurality of first mounting grooves (111) and the plurality of second mounting grooves (112) being alternately arranged around the roller body (11); and the rubber strips (122) are mounted in the respective first mounting grooves (111) and the bristle strips (121) are mounted in the respective second mounting grooves (112); and a gap (103) is provided between the rubber strip (122) and a bottom of the respective first mounting groove (111) at the driving end (101).

10. The roller brush according to claim 1, characterized in that in each of the brush strip groups (12), the bristle strip (121) and the rubber strip (122) that are adjacent are parallel or inclined relative to each other; and a distance between a top of the bristle strip (121) and a top of the rubber strip (122) is not greater than 15 mm circumferentially along the roller body (11).

11. The roller brush according to claim 1, characterized in that a connecting line between an end of the bristle strip (121) that is remote from the roller body (11) and a center of the roller body (11) is defined as a first straight line, a straight line in a length direction of the bristle strip (121) is defined as a second straight line, and an included angle between the first straight line and the second straight line ranges from 0° to 45°; or a connecting line between an end of the rubber strip (122) that is remote from the roller body (11) and a center of the roller body (11) is defined as a first straight line, a straight line in a length direction of the rubber strip (122) is defined as a second straight line, and an included angle between the first straight line and the second straight line ranges from 0° to 45°.

12. A cleaning device, characterized by comprising a driving member (20); a roller brush (10) according to any one of claims 1 to 11, one end of the roller brush (10) that is connected to the driving member (20) being defined as a driving end (101) and the other end of the roller brush (10) being defined as a driven end (102); and a combing structure (30), comprising a plurality of comb teeth (31) spaced along the axis of the roller brush (10) and configured to remove hair from the roller brush (10).

13. The cleaning device according to claim 12, characterized by comprising a hair blocking end cap (40), the hair blocking end cap (40) being detachably connected to the driving end (101) of the roller brush (10).

14. The cleaning device according to claim 13, characterized in that the hair blocking end cap (40) on its one side remote from the roller body (11) along the axis of the roller body (11) defines a stop groove (41), and the stop groove (41) is concave radially and extends circumferentially along the hair blocking end cap (40).

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