Floor brush assembly and cleaning device

Abstract

The present application discloses a floor brush assembly and a cleaning device. The floor brush assembly (1000) comprises a housing (100), a rolling brush (200), and a comb tooth structure (300). A rolling brush cavity (110) is provided inside the housing (100); the rolling brush (200) is rotatably provided in the rolling brush cavity (110); the rolling brush (200) comprises a roller body and a plurality of brush strips (220); the brush strips (220) are connected to the outer peripheral wall of the roller body (210) and are provided along the radial direction of the roller body (210); the plurality of brush strips (220) are arranged at intervals along the axial direction of the roller body (210); the comb tooth structure (300) comprises a plurality of first tooth portions (310) arranged at intervals along the axial direction of the roller body (210); the first tooth portions (310) protrude from the inner wall of the rolling brush cavity (110); a recess (311) is defined between two adjacent first tooth portions (310); one side of each first tooth portion (310) is provided with a protruding portion (320); and engaging grooves (323) and the recesses (311) are sequentially arranged in the rotation direction of the rolling brush (200).

Description

Floor brush assembly and cleaning device

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202421979095.1, filed on August 15, 2024, and entitled “Floor brush assembly and cleaning device”, the content of the above patent application is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of cleaning devices, in particular to a floor brush assembly and a cleaning device. BACKGROUND

[0004] With the continuous improvement of people's living standards, as a sanitary cleaning tool, the dust collector has become an indispensable electrical appliance in people's daily life. In the related art, the roller brush of the dust collector directly contacts the object to be cleaned. The roller brush is easily contaminated and entangled by various debris, such as hair and other long and thin debris, thereby affecting the cleaning effect of the roller brush, and also easily causing the roller brush to be stuck and unable to rotate, which seriously affects the user's experience.

[0005] SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a floor brush assembly, which can alleviate the problem of hair entanglement of the floor brush assembly.

[0007] The present application also provides a cleaning device having the above floor brush assembly.

[0008] According to the first aspect of the present application, the floor brush assembly comprises: a shell, an inner part of which is provided with a roller brush cavity; a roller brush, which is rotatably arranged in the roller brush cavity, and comprises a roller body and a plurality of brush strips, the plurality of brush strips being connected to the outer peripheral wall of the roller body and arranged along the circumferential direction of the roller body; and a comb structure, which comprises a plurality of first tooth portions arranged along the axial direction of the roller body, the first tooth portions being protruded from the inner wall of the roller brush cavity, and a recess being defined between adjacent two first tooth portions, the opening of the recess facing the roller brush, and an end surface of the first tooth portion away from the inner wall of the roller brush cavity being provided with a protrusion, the protrusion and the end surface of the first tooth portion defining a clamping groove, the clamping groove being located on the side of the protrusion away from the roller brush, and the clamping groove and the recess being arranged in sequence along the rotation direction of the roller brush.

[0009] According to the brush assembly of the first aspect of the present application, at least the following beneficial effects are achieved: by arranging the comb structure in the roller brush cavity, the comb structure comprises a plurality of first tooth portions, one side of the first tooth portion is provided with a protruding portion, a groove is formed between adjacent two first tooth portions, and a clamping groove is formed between the first tooth portion and the protruding portion. Since the clamping groove and the groove are arranged in sequence along the rotation direction of the roller brush, when the roller brush rotates, the bristles of the roller brush will pass through the clamping groove and the groove in sequence, the hair and sundries in the bristles of the roller brush are hooked by the clamping groove, so that the hair and sundries are pulled out of the bristles, the hair and sundries wound in the bristles can be cleaned, and the first tooth portion can also comb the bristles to clean the sundries in the bristles.

[0010] According to some embodiments of the present application, the inner wall of the groove comprises a bottom wall, the bottom wall faces the roller brush, and the minimum distance between the bristles and the bottom wall is less than or equal to 3 mm.

[0011] According to some embodiments of the present application, the protruding portion comprises a first side wall and a second side wall arranged opposite to each other, the first side wall faces the roller brush, the second side wall faces away from the roller brush, the first tooth portion comprises a third side wall and a fourth side wall intersecting at an angle, the third side wall faces the roller brush, one end of the third side wall is connected with the inner wall of the roller brush cavity, the other end of the third side wall is connected with one end of the fourth side wall, the other end of the fourth side wall is connected with the inner wall of the roller brush cavity, the protruding portion is formed on the fourth side wall, and the second side wall and the fourth side wall define the clamping groove.

[0012] According to some embodiments of the present application, the third side wall is arranged along the up-down direction, the fourth side wall is arranged along the horizontal direction, and the length of the third side wall is greater than the length of the fourth side wall.

[0013] According to some embodiments of the present application, the maximum distance between the second side wall and the axis of the roller body is less than the maximum distance between the first tooth portion and the axis of the roller body.

[0014] According to some embodiments of the present application, the first side wall is flush with the third side wall.

[0015] According to some embodiments of the present application, the comb structure further comprises a plurality of second tooth portions arranged at intervals along the axial direction of the roller body, the second tooth portions are connected with the inner wall of the roller brush cavity, and along the circumferential direction of the roller body, the second tooth portions are arranged at intervals with the first tooth portions and are configured to allow the bristles to pass through the first tooth portions and the second tooth portions in sequence when the roller brush rotates.

[0016] According to some embodiments of the present application, the inner wall of the roller brush cavity comprises a first circular arc wall and a second circular arc wall arranged around the axis of the roller body and connected with each other, the first circular arc wall and the second circular arc wall are arranged along the circumferential direction of the roller body, the inner diameter of the first circular arc wall is greater than the inner diameter of the second circular arc wall, there is a spacing between the first circular arc wall and the bristles, the second tooth portion is protruding from the first circular arc wall, and the first tooth portion is protruding from the second circular arc wall.

[0017] According to some embodiments of the present application, the comb structure comprises reinforcing ribs, the reinforcing ribs protrude from the inner wall of the rolling brush cavity and are arranged along the axial direction of the roller body, and the plurality of second teeth are respectively connected to the reinforcing ribs.

[0018] According to the cleaning device of the second aspect of the present application, the cleaning device comprises the floor brush assembly of the first aspect of the present application.

[0019] According to the cleaning device of the second aspect of the present application, the cleaning device comprises the floor brush assembly of the first aspect of the present application, and at least has the beneficial effects described above, which will not be repeated here.

[0020] According to some embodiments of the present application, the cleaning device is provided with a dust suction channel and a dust collection cavity, the dust suction channel communicates the rolling brush cavity with the dust collection cavity, the first tooth part is located at the intersection of the rolling brush cavity and the dust suction channel, and the convex part faces the dust suction channel from the side away from the rolling brush.

[0021] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in combination with the drawings and embodiments, in which:

[0023] FIG. 1 is a cross-sectional view of the cleaning device according to some embodiments of the present application;

[0024] FIG. 2 is an enlarged view of A in FIG. 1;

[0025] FIG. 3 is a structural schematic view of the shell and the comb structure of the cleaning device according to some embodiments of the present application;

[0026] FIG. 4 is an enlarged view of B in FIG. 3;

[0027] FIG. 5 is a cross-sectional view of the cleaning device according to some embodiments of the present application;

[0028] FIG. 6 is a cross-sectional view of the cleaning device according to some embodiments of the present application;

[0029] FIG. 7 is a cross-sectional view of the cleaning device according to some embodiments of the present application;

[0030] FIG. 8 is a cross-sectional view of the shell of the cleaning device according to some embodiments of the present application;

[0031] FIG. 9 is an enlarged view of C in FIG. 8;

[0032] FIG. 10 is an enlarged view of D in FIG. 8;

[0033] FIG. 11 is a cross-sectional view of the shell of the cleaning device according to some embodiments of the present application;

[0034] FIG. 12 is an enlarged view of E in FIG. 11.

[0035] Labels: brush assembly 1000; shell 100, roller brush cavity 110, first circular arc wall 111, second circular arc wall 112, opening 120, dust suction channel 130; roller brush 200, roller body 210, brush bar 220, scraping bar 230; comb structure 300, first tooth part 310, groove 311, bottom wall 3112, third side wall 312, fourth side wall 313, convex part 320, first side wall 321, second side wall 322, clamping groove 323, second tooth part 330, reinforcing rib 340. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be construed as limiting the present application.

[0037] Referring to FIG. 1, a brush assembly 1000 according to an embodiment of the present application is shown. The brush assembly 1000 includes a shell 100, a roller brush 200, and a comb structure 300.

[0038] Referring to FIGS. 1 and 2, the shell 100 has a roller brush cavity 110 inside, and the roller brush 200 is located in the roller brush cavity 110. The shell 100 has an opening 120 on the lower side, and the opening 120 is in communication with the roller brush cavity 110. Part of the structure of the roller brush 200 extends out of the shell 100 through the opening 120, so that the roller brush 200 can contact the surface of the object to be cleaned. The roller brush 200 is rotationally connected in the roller brush cavity 110. The brush assembly 1000 includes a driving motor, which can drive the roller brush 200 to rotate around its own axis. The comb structure 300 is also located in the roller brush cavity 110. When the roller brush 200 rotates, the roller brush 200 sweeps across the comb structure 300. The comb structure 300 can hook the hair and other debris in the roller brush 200. Alternatively, the comb structure 300 can block the hair and other debris in the roller brush 200, making it difficult for the hair and other debris to rotate with the roller brush 200, thereby isolating the hair and other debris and achieving a cleaning effect.

[0039] Specifically, referring to the structure of the rolling brush 200, as shown in FIG. 2 and FIG. 6, the rolling brush 200 includes a roller body 210 and a plurality of brush strips 220, the axis of the rolling brush 200 is the same as the axis of the roller body 210, the axial direction of the rolling brush 200 is the same as the axial direction of the roller body 210, and the rolling brush 200 rotates around the axis of the roller body 210. The brush strips 220 play a cleaning role, and can be in a thin strip structure or a thick strip structure, and can be provided as a brush or a rubber strip. One end of the brush strip 220 is connected to the outer peripheral wall of the roller body 210 and is arranged in the radial direction of the roller body 210, and a plurality of brush strips 220 are arranged in the axial direction of the roller body 210.

[0040] Referring to FIG. 2, for the structure of the comb tooth structure 300, the comb tooth structure 300 includes a plurality of first tooth portions 310, which are arranged in the axial direction of the roller body 210, and the first tooth portions 310 are protruded from the inner wall of the rolling brush cavity 110 and are in an integrated structure with the inner wall of the rolling brush cavity 110. As shown in FIG. 4, in some embodiments, the first tooth portion 310 is arranged downward, and when the rolling brush 200 rotates, the brush strip 220 will contact the lower end of the first tooth portion 310 from bottom to top. Specifically, two adjacent first tooth portions 310 define a groove 311, the opening of the groove 311 is arranged toward the rolling brush 200, and the inner wall of the groove 311 includes a bottom wall 3112 arranged toward the rolling brush 200, and when the rolling brush 200 rotates, the brush strip 220 will enter the groove 311. The first tooth portion 310 is provided with a protrusion 320 on one side, and the protrusion 320 is located on the side of the first tooth portion 310 away from the inner wall of the rolling brush cavity 110, which can be understood as that the protrusion 320 is located outside the groove 311. As shown in FIG. 2, the first tooth portion 310 and the protrusion 320 define a clamping groove 323, which is located on the side of the protrusion 320 away from the rolling brush 200, and the clamping groove 323 and the groove 311 are arranged in sequence in the rotating direction of the rolling brush 200, and when the rolling brush 200 rotates, the brush strip 220 passes through the clamping groove 323 and the groove 311 in sequence.

[0041] Referring to FIGS. 8 and 9, the protrusion 320 includes a first side wall 321 and a second side wall 322, which are arranged back to back along a first direction, the first side wall 321 faces the roller brush 200, and the second side wall 322 faces away from the roller brush 200. In the first direction, the maximum length of the protrusion 320 is less than that of the first tooth portion 310. For the actual orientation of the first direction, it is noted that, for example, in some embodiments, the first direction can be the front-rear direction in FIG. 8, at this time, the protrusion 320 protrudes from the lower end of the first tooth portion 310, the protrusion 320 is arranged downward, in the front-rear direction, the maximum length of the protrusion 320 is less than that of the first tooth portion 310, and the cross section of the protrusion 320 can be square, semicircular, triangular, or trapezoidal. In other embodiments, the first direction can also be the up-down direction, at this time, the protrusion 320 protrudes from the rear end of the first tooth portion 310, and the protrusion 320 is arranged rearward. In other embodiments, the first direction can also be the radial direction of the roller body 210.

[0042] Specifically, the rotation direction of the roller brush 200 can refer to the arrow direction in FIG. 6. When the roller brush 200 rotates, the roller brush 200 drives the brush strip 220 to rotate toward the protrusion 320. It can be understood that the brush strip 220 collides with the protrusion 320 head-on, and the roller brush 200 rotates to generate a centrifugal force, which can cause the hair in the brush strip 220 to be thrown out, thereby facilitating the hooking of the hair by the clamping groove 323. Since the second side wall 322 faces away from the roller brush 200, when the brush strip 220 passes through the clamping groove 323, the second side wall 322 can block the hair. As the roller brush 200 continues to rotate, the protrusion 320 can pull the hair out of the roller brush 200, and the protrusion 320 can also break the hair, so that the hair is separated from the roller brush 200. Then, the brush strip 220 enters the recess 311, and the first tooth portion 310 can comb the brush strip 220 to further clean the hair debris in the brush strip 220, so that the hair debris is not easily rotated together with the roller brush 200. In addition, the top end of the brush strip 220 can be in contact with the bottom wall 3112. At this time, since the roller brush 200 continues to rotate, the top end of the brush strip 220 rubs against the bottom wall 3112. The bottom wall 3112 can scrape off the debris entangled at the top end of the brush strip 220, or there can be a small gap between the brush strip 220 and the bottom wall 3112, and the debris entangled at the top end of the brush strip 220 can also directly rub against the bottom wall 3112 of the recess 311. The advantage of such an arrangement is that when the top end of the brush strip 220 is not entangled with debris, the brush strip 220 does not contact the bottom wall 3112, which can reduce noise. In addition, the recess 311 also has the function of avoiding the brush strip 220, which can reduce the noise generated by the direct impact of the brush strip 220 on the comb structure 300.

[0043] It should be noted that the embodiments of the present application also provide a cleaning device, which comprises the ground brush assembly of the above-mentioned embodiments, and the cleaning device can be a device such as a mite removal instrument, a sweeping robot or a dust collector.

[0044] Referring to FIGS. 3 and 5, in some embodiments, the inside of the cleaning device is provided with a dust collection cavity and a dust suction channel 130, the dust suction channel 130 is communicated with the rolling brush cavity 110 and the dust collection cavity, and the inside of the cleaning device is also provided with a fan, the fan can generate negative pressure to suck dust and garbage from the outside into the dust collection cavity, the dust and garbage from the outside pass through the opening 120, the rolling brush cavity 110 and the dust suction channel 130 in sequence to reach the dust collection cavity, when the hair and other sundries in the rolling brush 200 are hooked by the comb tooth structure 300, the hair and other sundries will gradually be separated from the rolling brush 200 as the rolling brush 200 continues to rotate, then the hair and other sundries are sucked into the dust collection cavity by the suction force of the fan, so as to complete the automatic cleaning of the hair and other sundries wound in the rolling brush 200.

[0045] Referring to FIGS. 3 and 5, specifically, the first tooth part 310 is located at the joint of the rolling brush cavity 110 and the dust suction channel 130, and the second side wall 322 of the convex part 320 is arranged towards the dust suction channel 130, since the convex part 320 can hook the hair in the rolling brush 200, the convex part 320 can pull out the hair in the rolling brush 200 to make the hair separate from the rolling brush 200, at this time, since the fan in the cleaning device generates negative pressure, the dust suction channel 130 can generate suction force to make the hair hooked by the second side wall 322 completely separate from the rolling brush 200, the hair will be directly sucked into the dust suction channel 130 and finally into the dust collection cavity, so that the hair is not easy to fall from the opening 120 to the outside of the shell 100, and the external environment can be avoided from being polluted.

[0046] In some embodiments, the minimum distance between the brush strip 220 and the bottom wall 3112 is less than or equal to 3 mm, so that the brush strip 220 is arranged relatively close to the bottom wall 3112 of the groove 311, so that the brush strip 220 can be in contact with the bottom wall 3112, or the distance between the brush strip 220 and the bottom wall 3112 is small.

[0047] Referring to FIG. 7, specifically, the maximum distance between the bottom wall 3112 and the axis of the roller body 210 is L2, which can also be understood as the maximum distance between the first tooth portion 310 and the axis of the roller body 210, and the maximum distance between the brush strip 220 and the axis of the roller body 210 is L3. When L2 is greater than L3, there is a gap between the brush strip 220 and the bottom wall 3112, and when L2 is less than or equal to L3, the brush strip 220 is in contact with the bottom wall 3112. The minimum distance between the brush strip 220 and the bottom wall 3112 is L4, and L4 satisfies: L4 = L2 - L3 ≤ 3 mm. Such a configuration can ensure that the gap between the brush strip 220 and the bottom wall 3112 is small, which is conducive to the bottom wall 3112 removing debris wrapped around the top end position of the brush strip 220, while also minimizing the noise generated by the friction between the brush strip 220 and the bottom wall 3112. In some embodiments, due to manufacturing tolerances, the lengths of the plurality of brush strips 220 have differences, and there can be a situation where some of the brush strips 220 are in contact with the bottom wall 3112 and some of the brush strips 220 have a gap between them and the bottom wall 3112.

[0048] Referring to FIGS. 6 and 7, in some embodiments, the maximum distance between the brush strip 220 and the axis of the roller body 210 is L3, and the minimum distance between the convex portion 320 and the axis of the roller body 210 is L1, and L3 is greater than L1. The top end position of the brush strip 220 is beyond the position of the convex portion 320, which ensures that the convex portion 320 can better hook the hair at the root position of the brush strip 220, thereby improving the cleaning effect.

[0049] Referring to FIG. 9, in some embodiments, the first tooth portion 310 includes a third side wall 312 and a fourth side wall 313, the third side wall 312 and the fourth side wall 313 are connected to each other, an included angle is formed between the third side wall 312 and the fourth side wall 313, the third side wall 312 faces the rolling brush 200, and the convex portion 320 is arranged on the fourth side wall 313. In some embodiments, the first tooth portion 310 is located at the rear side of the rolling brush 200, the third side wall 312 is arranged to extend along the up-down direction, the fourth side wall 313 is arranged to extend along the front-rear direction, the third side wall 312 and the fourth side wall 313 are perpendicular to each other, the fourth side wall 313 is arranged downward, the upper end of the third side wall 312 is connected to the inner wall of the rolling brush cavity 110, the lower end of the third side wall 312 is connected to one end of the fourth side wall 313, the other end of the fourth side wall 313 is connected to the inner wall of the rolling brush cavity 110, and in the front-rear direction, the length of the first tooth portion 310 gradually increases from top to bottom, which can be understood as the distance between the third side wall 312 and the bottom wall 3112 gradually increases from top to bottom. In this way, the shape of the first tooth portion 310 is relatively regular, and the structure of the first tooth portion 310 can be more conveniently manufactured. In addition, compared with the rectangular shape of the first tooth portion 310, when the rolling brush 200 rotates, the hair is more likely to move upward along the side wall of the first tooth portion 310 and be caught at the rib portion of the first tooth portion 310, and in the present embodiment, the horizontally extending fourth side wall 313 can block the hair, so that the hair does not move upward, and the hair is not easily caught at the rib portion of the first tooth portion 310.

[0050] In other embodiments, the first tooth portion 310 can also be located at the front side or the upper side of the rolling brush 200. It should be noted that when the first tooth portion 310 is located at the front side of the rolling brush 200, the convex portion 320 protrudes from the upper side of the first tooth portion 310. When the first tooth portion 310 is located at the upper side of the rolling brush 200, the third side wall 312 extends along the horizontal direction, and the fourth side wall 313 extends along the up-down direction.

[0051] Referring to FIG. 8, in some embodiments, the bottom wall 3112 can be configured as a circular arc wall, and the bottom wall 3112 is arranged around the axis of the roller body 210, so that the cross section of the first tooth portion 310 is in the shape of a sector. In this way, the bottom wall 3112 can be more matched with the movement track of the brush strip 220, which is conducive to the bottom wall 3112 to remove the debris at the top end of the brush strip 220.

[0052] Referring to FIG. 9, in some embodiments, the length of the third side wall 312 in the up-down direction is greater than the length of the fourth side wall 313 in the front-rear direction, so as to increase the length of the first tooth portion 310 in the up-down direction and improve the structural strength of the first tooth portion 310. At the same time, the length of the first tooth portion 310 in the front-rear direction is moderate, which does not cause the first tooth portion 310 to be too close to the rolling brush 200 to generate a large noise, and also ensures that the rolling brush 200 can rotate smoothly.

[0053] It can be understood that, as shown in FIG. 9, in some embodiments, the length of the convex part 320 is less than the length of the first tooth part 310 in the front-rear direction. It can be understood that the connection between the convex part 320 and the fourth side wall 313 forms a clamping groove 323, which is defined between the second side wall 322 and the fourth side wall 313, and the second side wall 322 and the fourth side wall 313 are perpendicular to each other. It can also be understood that a step surface is defined between the second side wall 322 and the fourth side wall 313. When the convex part 320 hooks the hair, the hair is clamped in the clamping groove 323 or the step surface, so that the hair is not easy to come off the convex part 320, which is beneficial to the convex part 320 to pull out the hair in the roller brush 200, thereby improving the cleaning effect.

[0054] As shown in FIGS. 6 and 9, in some embodiments, the maximum distance between the second side wall 322 of the convex part 320 and the axis of the roller body 210 is L1, and the maximum distance between the first tooth part 310 and the axis of the roller body 210 is L2, which can be understood as the maximum distance between the bottom wall 3112 and the axis of the roller body 210. Moreover, L2 is greater than L1. Such an arrangement can make the position of the convex part 320 closer to the brush strip 220, so that the convex part 320 can penetrate into the root position of the first brush strip 220, thereby facilitating the hooking of the hair at the root position.

[0055] As shown in FIG. 9, in some embodiments, the first side wall 321 and the third side wall 312 are both arranged in the up-down direction, and the third side wall 312 is below the first side wall 321. The first side wall 321 is flush with the third side wall 312. It can be understood that the side wall on the side of the convex part 320 facing the roller brush 200 is flush with the side wall on the side of the first tooth part 310 facing the roller brush 200. Such an arrangement can make the position of the convex part 320 closer to the brush strip 220, so that the convex part 320 can penetrate into the root position of the brush strip 220, thereby facilitating the hooking of the hair wound at the root position, and improving the effect of cleaning the hair. In addition, such an arrangement can also facilitate the manufacture of the structure of the first tooth part 310 and the convex part 320. When the first tooth part 310 and the convex part 320 are manufactured by an integral injection molding process, the structure of the first tooth part 310 and the convex part 320 can be easily demolded.

[0056] As shown in FIG. 1, in some embodiments, the roller brush 200 further comprises a scraping strip 230 connected to the outer peripheral wall of the roller body 210. The scraping strip 230 can be understood as a leather strip or a rubber strip. The scraping strip 230 is arranged in the axial direction of the roller body 210 and also arranged in the radial direction of the roller body 210. The scraping strip 230 can scrape the dust and garbage on the surface of the object to be cleaned, thereby improving the cleaning effect. The hair is difficult to be wound on the scraping strip 230. In the circumferential direction of the roller body 210, the scraping strip 230 is arranged in a spaced manner with the brush strip 220. The scraping strip 230 can support the hair, so that the hair is more difficult to be wound at the root position of the brush strip 220.

[0057] Referring to FIGS. 2 and 6, in some embodiments, the comb structure 300 further comprises a plurality of second teeth 330 arranged along the axis of the roller body 210, the second teeth 330 extending in the up-down direction and protruding from the inner wall of the rolling brush cavity 110, with the lower end of the second teeth 330 facing the rolling brush 200. Along the circumferential direction of the rolling brush 200, the second teeth 330 are arranged in a staggered manner with the first teeth 310. It can also be understood that the first teeth 310 and the second teeth 330 are two rows of tooth structures arranged separately, with the second teeth 330 located above the first teeth 310. In this embodiment, by arranging two rows of tooth structures, when the rolling brush 200 rotates, the bristles 220 will sweep across the first teeth 310 and the second teeth 330 in turn, thereby scraping off the hair debris entangled on the rolling brush 200, and the cleaning effect of the rolling brush 200 can be improved.

[0058] In some embodiments, along the axial direction of the roller body 210, the plurality of first teeth 310 and the plurality of second teeth 330 are arranged in a staggered manner. It can be understood that, as viewed from the side, the position of the second teeth 330 corresponds to the position of the groove 311 between the two adjacent first teeth 310, and the plurality of first teeth 310 and the plurality of second teeth 330 are arranged alternately, but the first teeth 310 and the second teeth 330 are spaced apart along the circumferential direction of the roller body 210. In this way, the hair debris entangled in the rolling brush 200 can be cleaned more comprehensively.

[0059] In some embodiments, the structure of the second teeth 330 can be the same as that of the first teeth 310, and the protrusion 320 of the above embodiment can be arranged at the lower end of the second teeth 330, so as to form the clamping groove 323 between the protrusion 320 and the lower end surface of the second teeth 330, which can hook the hair entangled in the rolling brush 200, thereby improving the cleaning effect.

[0060] Referring to FIG. 8, in some embodiments, the inner wall of the rolling brush cavity 110 includes a first circular arc wall 111 and a second circular arc wall 112, the first circular arc wall 111 and the second circular arc wall 112 are arranged around the axis of the roller body 210 and are connected to each other, the center of the first circular arc wall 111 is the same as the center of the second circular arc wall 112, the inner diameter of the first circular arc wall 111 is larger than the inner diameter of the second circular arc wall 112, the second tooth part 330 is protruded from the first circular arc wall 111, the first tooth part 310 is protruded from the second circular arc wall 112, and part of the structure of the second circular arc wall 112 is configured as a bottom wall 3112. In this embodiment, the shapes of the first circular arc wall 111 and the second circular arc wall 112 are more matched with the shape of the rolling brush 200, so that the rolling brush 200 can make full use of the space of the rolling brush cavity 110, and because the inner diameter of the second circular arc wall 112 is smaller, the second circular arc wall 112 is closer to the rolling brush 200 than the first circular arc wall 111, there is a gap between the first circular arc wall 111 and the brush strip 220 to avoid contact with the brush strip 220 to generate a larger noise, there is a smaller gap between the second circular arc wall 112 and the brush strip 220, or the second circular arc wall 112 contacts the brush strip 220, the second circular arc wall 112 can rub the dirt at the top end position of the brush strip 220, so as to improve the cleaning effect.

[0061] Referring to FIG. 8, in some embodiments, the upper end of the third side wall 312 of the first tooth part 310 is connected to the upper end of the second circular arc wall 112, and the end of the fourth side wall 313 of the first tooth part 310 away from the third side wall 312 is connected to the lower end of the second circular arc wall 112, so that the length of the first tooth part 310 in the front-rear direction is related to the arc length of the second circular arc wall 112, the arc length of the first circular arc wall 111 is greater than the arc length of the second circular arc wall 112, which can also be understood as the area of the first circular arc wall 111 is greater than the area of the second circular arc wall 112, the arc length of the second circular arc wall 112 is set to be smaller, and the contact area between the second circular arc wall 112 and the brush strip 220 is smaller, so as to reduce the noise, and at the same time, the first tooth part 310 will not be too close to the rolling brush 200, so as to reduce the noise generated by the contact between the brush strip 220 and the first tooth part 310.

[0062] Referring to FIGS. 2, 10 and 11, in some embodiments, the comb structure 300 includes a reinforcing rib 340, the upper end of the reinforcing rib 340 is connected to the inner wall of the rolling brush cavity 110, the reinforcing rib 340 is arranged along the axial direction of the roller body 210, and the reinforcing rib 340 is arranged and extends along the up-down direction, a plurality of second tooth parts 330 are respectively connected to one side of the reinforcing rib 340, and along the up-down direction, the length of the second tooth part 330 is greater than the length of the reinforcing rib 340. In this embodiment, by arranging the reinforcing rib 340, the reinforcing rib 340 can improve the structural strength of the second tooth part 330, so that the second tooth part 330 is not easy to break, and can play a protection role.

[0063] In some embodiments, in the up-down direction, the length of the second tooth portion 330 is greater than the length of the reinforcing rib 340, which can be understood as that the lowest position of the second tooth portion 330 is lower than the lowest position of the reinforcing rib 340, thereby forming a stepped surface at the connection between the second tooth portion 330 and the reinforcing rib 340, the stepped surface faces away from the rolling brush 200, when the brush strip 220 sweeps through the second tooth portion 330, the hair in the brush strip 220 can be stuck at the position of the stepped surface, which is beneficial to hook the hair and can improve the cleaning effect.

[0064] In some embodiments, the comb tooth structure 300 and the shell 100 are an integral structure, and the comb tooth structure 300 and the shell 100 can be formed by an integral injection molding process, which is relatively convenient to manufacture. In other embodiments, the comb tooth structure 300 can be a separate part structure, and the comb tooth structure 300 can be connected to the inner wall of the rolling brush cavity 110 by screws, buckles, welding, etc.

[0065] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0066] In the description of the present application, several means one or more, and multiple means more than two, greater than, less than, more than, etc. are not included in the number, and above, below, etc. are included in the number. If it is described that the first, second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0067] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0068] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present application.

Claims

1. A floor brush assembly, comprising: a housing, internally provided with a roller brush cavity; a roller brush rotatably arranged in the roller brush cavity, the roller brush comprising a roller body and a plurality of brush strips, the plurality of brush strips being connected to an outer peripheral wall of the roller body and arranged along a circumferential direction of the roller body; and a comb structure comprising a plurality of first teeth arranged along an axial direction of the roller body, the first teeth being protruded from an inner wall of the roller brush cavity, two adjacent first teeth defining a groove therebetween, an opening of the groove facing the roller brush, an end surface of the first teeth away from the inner wall of the roller brush cavity being provided with a protrusion, a clamping groove being defined between the end surface of the first teeth and the protrusion, the clamping groove being located on a side of the protrusion away from the roller brush, the clamping groove and the groove being arranged in sequence along a rotation direction of the roller brush. The inner wall of the groove comprises a bottom wall, the bottom wall facing the roller brush, a minimum distance between the brush strips and the bottom wall being less than or equal to 3 mm.

2. The brush assembly of claim 1, wherein, The protrusion comprises a first side wall and a second side wall arranged opposite to each other, the first side wall facing the roller brush, the second side wall facing away from the roller brush, the first teeth comprising a third side wall and a fourth side wall arranged at an angle with respect to each other, the third side wall facing the roller brush, one end of the third side wall being connected to the inner wall of the roller brush cavity, the other end of the third side wall being connected to one end of the fourth side wall, the other end of the fourth side wall being connected to the inner wall of the roller brush cavity, the protrusion being protruded from the fourth side wall, the second side wall and the fourth side wall defining the clamping groove therebetween.

3. The brush assembly of claim 1 or 2, wherein, The third side wall is arranged along a vertical direction, the fourth side wall is arranged along a horizontal direction, a length of the third side wall being greater than a length of the fourth side wall.

4. The brush assembly of claim 3, wherein, A maximum distance between the second side wall and an axis of the roller body is less than a maximum distance between the first teeth and the axis of the roller body.

5. The brush assembly of claim 3 or 4, wherein, The first side wall is flush with the third side wall.

6. The brush assembly of any one of claims 3 to 5, wherein, The comb structure further comprises a plurality of second teeth arranged along the axial direction of the roller body, the second teeth being connected to the inner wall of the roller brush cavity, the second teeth being arranged at intervals with respect to the first teeth along a circumferential direction of the roller body, and being configured to allow the brush strips to pass through the first teeth and the second teeth in sequence when the roller brush rotates.

7. The brushroll assembly of any of claims 1-6, wherein, The inner wall of the roller brush cavity comprises a first arc wall and a second arc wall arranged around the axis of the roller body and connected to each other, the first arc wall and the second arc wall being arranged along the circumferential direction of the roller body, an inner diameter of the first arc wall being greater than an inner diameter of the second arc wall, a spacing being present between the first arc wall and the brush strips, the second teeth being protruded from the first arc wall, and the first teeth being protruded from the second arc wall.

8. The brush assembly of claim 7, wherein, The comb structure comprises a reinforcing rib protruded from the inner wall of the roller brush cavity and arranged along the axial direction of the roller body, the plurality of second teeth being connected to the reinforcing rib respectively.

9. The brush assembly of claim 7 or 8, wherein, 10.A cleaning device comprising the floor brush assembly according to any one of claims 1 to 9. ​ 11. The cleaning device of claim 10, wherein a suction passage and a dust collection cavity are provided, the suction passage communicates the roller brush cavity and the dust collection cavity, the first tooth portion is located at a joint of the roller brush cavity and the suction passage, and the convex portion faces the suction passage from a side of the roller brush.

12. The cleaning device of claim 10, wherein the first tooth portion is located at a joint of the roller brush cavity and the suction passage, and the convex portion faces the suction passage from a side of the roller brush.

13. The cleaning device of claim 10, wherein the first tooth portion is located at a joint of the roller brush cavity and the suction passage, and the convex portion faces the suction passage from a side of the roller brush.

14. The cleaning device of claim 10, wherein the first tooth portion is located at a joint of the roller brush cavity and the suction passage, and the convex portion faces

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