BRUSHROLL, FLOOR BRUSH, AND FLOOR CLEANING DEVICE

Abstract

A brushroll is provided. The brushroll includes a rolling body and a plurality of brush strip sets. The plurality of brush strip sets extend along an axial direction of the rolling body and are arranged at intervals along a circumferential direction of the rolling body. The brush strip set includes a first brush strip and a second brush strip. Both the first brush strip and the second brush strip are protruded from an outer surface of the rolling body, and are continuous along the axial direction of the rolling body. A circumferential spacing between the first brush strip and the second brush strip in a same one of the brush strip sets is less than a circumferential spacing between two adjacent ones of the brush strip sets.

Description

TECHNICAL FIELD

The present disclosure relates to the technical field of floor cleaning devices, and in particular to a brushroll, a floor brush, and a floor cleaning device.

BACKGROUND

Like many common household electrical appliances, floor cleaning devices such as sweepers (also referred to as scrubbers and washers) depend on a floor brush to realize a cleaning function. The floor brush generally includes an outer housing and a brushroll arranged in the outer housing. The brushroll can rotate on its axis to collect rubbish such as dust, paper scraps, and hair, and then, the rubbish are collected under a negative pressure, so that the floor cleaning effect is achieved. However, in response to rotation of the conventional brushroll, hair can easily become entangled on the brushroll. As a result, the brushroll has a lower cleaning efficiency when cleaning the floor and the entangled hair needs to be removed manually and regularly thus causing an inconvenience during use.

SUMMARY

An objective of the present disclosure is to provide a brushroll, a floor brush, and a floor cleaning device, to solve the above technical problem.

According to a first aspect of the present disclosure, the present disclosure provides a brushroll, including a rolling body and a plurality of brush strip sets, where the plurality of brush strip sets extend along an axial direction of the rolling body and are arranged at intervals along a circumferential direction of the rolling body; the brush strip set includes a first brush strip and a second brush strip; both the first brush strip and the second brush strip are protruded from an outer surface of the rolling body, and are continuous along the axial direction of the rolling body; and a circumferential spacing between the first brush strip and the second brush strip in a same one of the brush strip sets is less than a circumferential spacing between two adjacent ones of the brush strip sets.

According to a second aspect of the present disclosure, the present disclosure provides a floor brush, including an outer housing, the brushroll and a scraping strip, where the outer housing is provided with an accommodating cavity and a suction channel mouth communicating with the accommodating cavity; the brushroll is provided in the accommodating cavity and is configured to rotate; the scraping strip is fixed between the brushroll and the suction channel mouth; and at least one of the first brush strip and the second brush strip can be cooperated with the scraping strip under rotation of the rolling body to separate entangled hair through the scraping strip.

According to a third aspect of the present disclosure, the present disclosure provides a floor cleaning device, including a body and the floor brush, where the floor brush is provided on the body.

According to the above technical solutions, the embodiment of the present disclosure has at least the following beneficial effects.

According to the brushroll, the floor brush and the floor cleaning device provided by the embodiments of the present disclosure, when the rolling body rotates along a direction, the first brush strip rolls up hair. The hair can be supported on the first brush strip and captured by the adjacent second brush strip. Since a circumferential spacing between the first brush strip and the second brush strip in a same brush strip set is less than a circumferential spacing between two adjacent brush strip sets, the two adjacent brush strip sets are not too close to cause the large supporting area and capturing force of the hair and the entanglement of the hair. This can be understood as that an area for suspending the rolled hair can be enlarged by increasing the circumferential spacing between the two adjacent brush strip sets. With the increased hair suspension area, the hair can be separated from the brush strip sets effectively and more easily when sucked by a negative pressure. Additionally, since the first brush strip and the second brush strip are continuous along the axial direction of the rolling body, the hair cannot be embedded into roots of the first brush strip and the second brush strip. This reduces a resistance when the hair is sucked by the negative pressure, and lowers a risk of entanglement of the hair.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of the present disclosure or in the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

FIG. 1 is a structural schematic view of a floor brush according to an embodiment of the present disclosure;

FIG. 2 is a structural schematic view from another viewing angle of the floor brush in FIG. 1;

FIG. 3 is a structural schematic view of a rolling body and a brush strip set in a brushroll of the floor brush in FIG. 2;

FIG. 4 is an enlarged structural schematic view of an end cover at a position A in the floor brush in FIG. 2;

FIG. 5 is an enlarged structural schematic view of a scraping strip at a position B in the floor brush in FIG. 2;

FIG. 6 is a structural schematic view from another viewing angle of the scraping strip in FIG. 5;

FIG. 7 is a structural schematic view of an outer housing in the floor brush in FIG. 1, and

FIG. 8 is a structural schematic view of contact between the floor brush in FIG. 1 and floor.

REFERENCE NUMERALS

1: floor brush, 100: outer housing, 110: accommodating cavity, 120: suction channel mouth, 200: brushroll, 210: rolling body, 220: brush strip set, 221: first brush strip, 222: second brush strip, 223: first segment, 224: second segment, 225: third segment, 226: fourth segment, 230: spiral guiding arc surface, 240: spiral guiding groove, 250: end cover, 251: accommodating groove, 252: notch, 300: scraping strip, 310: scraping surface, 320: avoidance area, and 2: floor.

DETAILED DESCRIPTION OF THE EMBODIMENTS

To facilitate the understanding of the present disclosure, the present disclosure is described more completely below with reference to the accompanying drawings. The preferable embodiments of the present disclosure are shown in the accompanying drawings. However, the present closure is embodied in various forms without being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make the understanding of the present disclosure more thorough and comprehensive.

Moreover, the terms such as “first” and “second” are used only for the purpose of description and should not be construed as indicating or implying a relative importance, or implicitly indicating a quantity of indicated technical features. Therefore, the features defined by “first” and “second” can explicitly or implicitly include one or more features. In the description of the present disclosure, “multiple” means two or more, unless otherwise specifically defined.

It should be noted that, unless otherwise clearly specified that, in the description of the present disclosure, meanings of terms “mount”, “provide”, and “connect” should be understood in a broad sense. For example, a connection may be a fixed connection, a removable connection, or an integral connection; may be a mechanical connection or an electrical connection; may be a direct connection or an indirect connection via an intermediate medium; or may be intercommunication between two components. Those of ordinary skill in the art may understand the specific meanings of the above terms in the present disclosure based on specific situations.

Referring to FIG. 1, the present disclosure provides floor brush 1. The floor brush 1 includes outer housing 100 and brushroll 200. The outer housing 100 is provided with accommodating cavity 110 and suction channel mouth 120 communicating with the accommodating cavity 110. The brushroll 200 is provided in the accommodating cavity 110 and is configured to rotate in the accommodating cavity 110. The brushroll 200 in rotation can roll up dirt (such rubbishes as dust, paper scraps and hair) on the floor. The rolled dirt is intensively collected by the suction channel mouth 120 under an action of a negative pressure.

The floor brush 1 can be applied to a sweeper. The sweeper may be a sweeping robot. When traveling on the floor, the sweeping robot can drive the brushroll 200 to rotate. Thus, the rotating brushroll 200 cleans the dirt on the floor. Likewise, the floor brush 1 can also be applied to a floor cleaning device such as a dust collector and a mopping machine. It is to be noted that the floor cleaning device includes a body and the floor brush 1. The outer housing 100 of the floor brush 1 is connected to the body.

Referring to FIG. 2 and FIG. 3, the brushroll 200 includes rolling body 210 and a plurality of brush strip sets 220. The rolling body 210 is provided in the accommodating cavity 110. The rolling body 210 can rotate in the accommodating cavity 110 relative to the outer housing 100, which can drive the plurality of brush strip sets 220 on the rolling body 210 to synchronously rotate along a circumferential direction of the rolling body 210, and allow the brush strip sets 220 to clean the dirt on the floor. An end portion of the rolling body 210 can be connected to a driving source. An output end of the driving source may be directly or indirectly connected to the end portion of the rolling body 210, thereby driving the rolling body 210 to rotate along the circumferential direction. The driving source may be an external motor or an internal motor. It is to be noted than when the output end of the driving source is indirectly connected to the rolling body 210, a change gear set may be provided between the driving source and the rolling body 210.

There are a plurality of brush strip sets 220. Herein, the term “a plurality of” means at least two. The plurality of brush strip sets 220 extend along an axial direction of the rolling body 210 and are arranged at intervals along a circumferential direction of the rolling body 210. The brush strip set 220 includes first brush strip 221 and second brush strip 222. Both the first brush strip 221 and the second brush strip 222 are protruded from an outer surface of the rolling body 210, so as to ensure that the first brush strip 221 and the second brush strip 222 can come in contact and capture the dirt. Both the first brush strip 221 and the second brush strip 222 are continuous along the axial direction of the rolling body 210, namely the first brush strip 221 and the second brush strip 222 in the extension direction can be taken as a whole continuous strip, and there is no gap for the first brush strip 221 and the second brush strip 222 that makes the hair embedded into roots easily. It is to be understood that the first brush strip 221 and the second brush strip 222 in the extension direction may also be discontinuous in other embodiments. A circumferential spacing between the first brush strip 221 and the second brush strip 222 in a same one of the brush strip sets 220 is less than a circumferential spacing between two adjacent ones of the brush strip sets 220. In a rotating direction of the rolling body 210, the first brush strip 221 is positioned in front of the second brush strip 222 to support the hair. The second brush strip 222 is more flexible or softer than the first brush strip 221, ensuring that the first brush strip 221 with a stronger support strength can roll up the hair on the floor and the hair is captured by the softer second brush strip 222.

The first brush strip 221 includes a circumferentially continuous and unspaced flexible body. The second brush strip 222 may include at least one of a circumferentially continuous and unspaced flexible body, and axially compact and continuous fine soft bristles. It is to be understood that both the first brush strip 221 and the second brush strip 222 may use the flexible body, or the first brush strip 221 uses the flexible body, and the second brush strip 222 uses the fine soft bristles. The flexible body may be made of rubber, cloth, polyvinyl chloride (PVC), thermoplastic polyurethane (TPU), etc. Particularly, when the first brush strip 221 uses the flexible body, and the second brush strip 222 uses the fine soft bristles, the first brush strip 221 can show elastic deformation when coming in contact with the floor, so as to match with a shape of the floor by means of the deformation. When cleaning a carpet or a blanket, the first brush strip 221 can also roll up the hair easily. The rolled hair can further be embedded into the second brush strip 222 made of the fine soft bristles. The second brush strip 222 made of the fine soft bristles can further increase a capturing force to the hair. Particularly, it is ensured that the hair can still be rolled up in case of a large spacing between the first brush strip 221 and the second brush strip 222, and the hair is not entangled for the large spacing between the two adjacent brush strip sets 220. In addition, a radial height of the second brush strip 222 made of the fine soft bristles is less than a radial height of the first brush strip 221, so as to prevent the rolled hair from being embedded into roots of the fine soft bristles. The hair embedded into the roots may be entangled.

According to the brushroll 200, the floor brush 1 and the floor cleaning device provided by the embodiments of the present disclosure, when the rolling body 210 rotates along a direction, the first brush strip 221 rolls up hair. The hair can be supported on the first brush strip 221 and captured by the adjacent second brush strip 222. Since a circumferential spacing between the first brush strip 221 and the second brush strip 222 in a same brush strip set 220 is less than a circumferential spacing between two adjacent brush strip sets 220, the two adjacent brush strip sets 220 are not too close to cause the large supporting area and capturing force of the hair and the entanglement of the hair. This can be understood as that an area for suspending the rolled hair can be enlarged by increasing the circumferential spacing between the two adjacent brush strip sets 220. With the increased hair suspension area, the hair can be separated from the brush strip sets 220 effectively and more easily when sucked by a negative pressure. Additionally, since the first brush strip 221 and the second brush strip 222 are continuous along the axial direction of the rolling body 210, the hair cannot be embedded into roots of the first brush strip 221 and the second brush strip 222. This reduces a resistance when the hair is sucked by the negative pressure, and lowers a risk of entanglement of the hair. It is to be understood that there may further be only one brush strip in the brush strip set 220 in other embodiments of the present disclosure.

Referring also to FIG. 3, both the first brush strip 221 and the second brush strip 222 extend spirally, such that the dirt is rolled up and captured more easily. Specifically, in the embodiment, the first brush strip 221 includes a first segment 223 and a second segment 224 that are connected axially. The first segment 223 and the second segment 224 are of a first shape along the circumferential direction. The first shape may be a “V” shape or a “U” shape. For example, the first shape is the “V” shape in the figure. The second brush strip 222 includes a third segment 225 and a fourth segment 226 that are connected axially. The third segment 225 extends along a track of the first segment 223. The fourth segment 226 extends along a track of the second segment 224. The third segment 225 and the fourth segment 226 are of a second shape along the circumferential direction. The second shape may be a “V” shape or a “U” shape. Based on shapes of the first brush strip 221 and the second brush strip 222, the first brush strip 221 and the second brush strip 222 can guide and push the hair or dust to a middle area, namely an area where the first segment 223 and the second segment 224 are intersected with each other, and an area where the third segment 225 and the fourth segment 226 are intersected with each other. Therefore, the hair or dust is not clamped at two ends of the rolling body 210. It is to be understood that the first brush strip 221 and the second brush strip 222 may also not extend spirally in other embodiments.

In an embodiment, between two adjacent ones of the brush strip sets 220, the rolling body 210 is provided with spiral guiding arc surface 230 extending along the axial direction of the rolling body 210. A radial height of the spiral guiding arc surface 230 is less than radial heights of the brush strip sets 220. An axial extending track of the spiral guiding arc surface 230 corresponds to a track of the first brush strip 221 or a track of the second brush strip 222. Based on the structural design of the spiral guiding arc surface 230, when the rolling body 210 rotates, an airflow away from the floor is formed between the two adjacent brush strip sets 220. This raises the hair, reduces the resistance when the hair is sucked by the negative pressure, and further prevents the entanglement of the hair. In addition, a circumferential width of the spiral guiding arc surface 230 may be as large as possible to capture large-particle dirt. It is to be noted that the embodiment where the brush strip set 220 includes one brush strip is also applied to the embodiment with the spiral guiding arc surface 230. In this case, it is to be understood that the spiral guiding arc surface 230 is formed between the two adjacent brush strip sets 220. The spiral guiding arc surface 230 can form an airflow away from the floor, thereby raising the hair, reducing the resistance when the hair is sucked by the negative pressure, and facilitating removal and collection of the hair.

As shown in FIG. 3, an outer surface of the rolling body 210 between the two adjacent ones of the brush strip sets 220 is recessed radially to form a spiral guiding groove 240. A surface of the spiral guiding groove 240 serves as the spiral guiding arc surface 230. In the embodiment, by directly grooving the rolling body 210, the radial depth of the spiral guiding arc surface 230 can further be increased. This can further increase the airflow, and have the larger capturing force to capture the dirt to the spiral guiding arc surface 230. Based on the structure of the spiral guiding groove 240, the large-particle rubbishes are not blocked to reduce the resisting moment in rotation. It is to be understood that a bump with the spiral guiding arc surface 230 can further be directly provided between two adjacent brush strip sets 220 in other embodiments.

Referring to FIG. 4, at least one of two axially opposite ends of the rolling body 210 is provided with end cover 250. Annular accommodating groove 251 that extends along the circumferential direction of the rolling body 210 is formed in the end cover 250. The accommodating groove 251 is exposed out of the brushroll 100. A side of the end cover 250 away from the rolling body 210 is further provided with notch 252 communicating with the accommodating groove 251. There may be one or more notches 252. For example, as shown in FIG. 4, there are four notches 252 that are spaced circumferentially and equidistantly. Based on the structural design of the end cover 250, even though the end of the rolling body 210 provided with the end cover 250 is entangled with the hair, the hair entangled in the accommodating groove 251 can also be picked easily through the notch 252 and separated from the accommodating groove 251.

Referring to FIG. 2 and FIG. 5, the floor brush 1 provided by the present disclosure further includes scraping strip 300. The scraping strip 300 is fixed between the brushroll 220 and the suction channel mouth 120. At least one of the first brush strip 221 and the second brush strip 222 can be cooperated with the scraping strip 300 under rotation of the rolling body 210 to separate entangled hair through the scraping strip 300. It is to be noted that the so-called cooperation between the brush strip and the scraping strip 300 refers to that the scraping strip 300 is tangent with or in interference fit with at least one brush strip in the brush strip set 220 in a height direction, so as to prevent entanglement of the hair near the suction channel mouth 120 in the hair scraping action of the scraping strip.

Referring to FIG. 6, the scraping strip 300 has scraping surface 310. A direction in which a bottom of the scraping surface 310 is tangent with the rolling body 210 is defined as a reference direction. The scraping surface 310 is inclined to the reference direction. An included angle a between the scraping surface 310 and the reference direction may be controlled between 5° and 30°, such that the bottom of the scraping strip 300 can better hook hair entangled to the brush strip.

Referring to FIG. 7, there are a plurality of scraping strips 300. The plurality of scraping strips 300 extend along the axial direction of the rolling body 310 and form a scraping strip array. The suction channel mouth 120 is positioned in a central area of the scraping strip array and aligns with an intersection of the first segment 223 and the second segment 224. Further, arrangement of the scraping strip array may follow trends of the first brush strip 221 and the second brush strip 222, namely a part of the scraping strips 300 in the central area of the scraping strip array are dense, while a part of the scraping strips 300 at two ends of the scraping strip array are sparse.

In an embodiment, referring to FIG. 7 and FIG. 8, a part of the scraping strips 300 in the central area of the scraping strip array are deviated along a rotating direction of the rolling body 210 to provide avoidance area 320. The avoidance area 320 communicates with the suction channel mouth 120. Based on the avoidance area 320, there may be an enough space near the suction channel mouth 120, such that the hair is fluffier and is not entangled easily. FIG. 8 illustrates a trend that the rolling body 210 in rotation drives the hair. As shown in FIG. 8, the first brush strip 221 comes in contact with the floor 2, and the first brush strip 221 rolls up the dirt on the floor 2. As can be seen, the avoidance area 320 provides an enough space. A size of a radial opening of the suction channel mouth 120 decreases gradually from a side adjacent to the rolling body 210 to a side away from the rolling body 210, namely the suction channel mouth 120 is an externally expanded and internally contracted structure, so as to better guide the airflow and gather the hair to the middle, for ease of collection. As shown in FIG. 7, the suction channel mouth 120 is generally of a bell mouth shape, with a big opening adjacent to the brushroll 200. The scraping strips 300 in the central area are arranged along an edge of the side of the suction channel mouth 120 adjacent to the rolling body 210.

The technical features of the foregoing embodiments can be employed in arbitrary combinations. For brevity of description, not all possible combinations of the technical features of the foregoing embodiments are described. However, the combinations of the technical features should be construed as falling within the scope described in this specification as long as there is no contradiction in the combinations.

Only several embodiments of the present disclosure are described in detail above, but they should not therefore be construed as limiting the scope of the present disclosure. It should be noted that those of ordinary skill in the art can further make several variations and improvements without departing from the concept of the present disclosure, and all of these fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope defined by the claims.

Claims

1. A brushroll, comprising a rolling body and a plurality of brush strip sets, wherein the plurality of brush strip sets extend along an axial direction of the rolling body and are arranged at intervals along a circumferential direction of the rolling body; each brush strip set of the plurality of brush strip sets comprises a first brush strip and a second brush strip; the first brush strip and the second brush strip are protruded from an outer surface of the rolling body, and the first brush strip and the second brush strip are continuous along the axial direction of the rolling body; and a circumferential spacing between the first brush strip and the second brush strip in a same brush strip set of the plurality of brush strip sets is less than a circumferential spacing between two adjacent brush strip sets of the plurality of brush strip sets.

2. The brushroll according to claim 1, wherein in a rotating direction of the rolling body, the first brush strip is positioned in front of the second brush strip to support hair; the first brush strip comprises a first axially continuous and unspaced flexible body; and the second brush strip comprises at least one of a second axially continuous and unspaced flexible body, and axially compact and continuous fine soft bristles.

3. The brushroll according to claim 2, wherein the second brush strip is softer than the first brush strip.

4. The brushroll according to claim 2, wherein the first brush strip is the first axially continuous and unspaced flexible body, and the second brush strip is the axially compact and continuous fine soft bristles.

5. The brushroll according to claim 4, wherein a radial height of the second brush strip is less than a radial height of the first brush strip.

6. The brushroll according to claim 1, wherein the first brush strip and the second brush strip extend spirally.

7. The brushroll according to claim 6, wherein the first brush strip comprises a first segment and a second segment, wherein the first segment and the second segment are connected axially; the first segment and the second segment are of a first shape along the circumferential direction; the second brush strip comprises a third segment and a fourth segment, wherein the third segment and the fourth segment are connected axially; the third segment extends along a track of the first segment; the fourth segment extends along a track of the second segment; the third segment and the fourth segment are of a second shape along the circumferential direction; and the first shape and the second shape are a V shape or a U shape.

8. The brushroll according to claim 7, wherein between the two adjacent brush strip sets of the plurality of brush strip sets, the rolling body is provided with a spiral guiding arc surface extending along the axial direction of the rolling body; a radial height of the spiral guiding arc surface is less than radial heights of the plurality of brush strip sets; and an axial extending track of the spiral guiding arc surface corresponds to a track of the first brush strip and a track of the second brush strip.

9. The brushroll according to claim 8, wherein an outer surface of the rolling body between the two adjacent brush strip sets of the plurality of brush strip sets is recessed radially to form a spiral guiding groove; and a surface of the spiral guiding groove serves as the spiral guiding arc surface.

10. The brushroll according to claim 1, wherein at least one of two axially opposite ends of the rolling body is provided with an end cover; an annular accommodating groove extending along the circumferential direction of the rolling body is formed in the end cover; the annular accommodating groove is exposed out of the brushroll; and a side of the end cover is provided with a notch communicating with the annular accommodating groove, wherein the side of the end cover is away from the rolling body.

11. A floor brush, comprising: an outer housing, wherein the outer housing is provided with an accommodating cavity and a suction channel mouth communicating with the accommodating cavity;the brushroll according to claim 1, wherein the brushroll is provided in the accommodating cavity and configured to rotate; anda scraping strip, wherein the scraping strip is fixed between the brushroll and the suction channel mouth, and at least one of the first brush strip and the second brush strip is cooperated with the scraping strip under rotation of the rolling body to separate entangled hair through the scraping strip.

12. The floor brush according to claim 11, wherein the scraping strip has a scraping surface; a direction in which a bottom of the scraping surface is tangent with the rolling body is defined as a reference direction; and an included angle between the scraping surface and the reference direction is between 5° and 30°.

13. The floor brush according to claim 11, wherein the first brush strip and the second brush strip extend spirally; the first brush strip comprises a first segment and a second segment, wherein the first segment and the second segment are connected axially; the first segment and the second segment are of a first shape along the circumferential direction; the second brush strip comprises a third segment and a fourth segment, wherein the third segment and the fourth segment are connected axially; the third segment extends along a track of the first segment; the fourth segment extends along a track of the second segment; and the third segment and the fourth segment are of a second shape along the circumferential direction; the first shape and the second shape are a V shape or a U shape; andthe floor brush comprises a plurality of scraping strips; wherein the plurality of scraping strips extend along the axial direction of the rolling body and form a scraping strip array; and the suction channel mouth is positioned in a central area of the scraping strip array and aligns with an intersection of the first segment and the second segment.

14. The floor brush according to claim 13, wherein a part of the plurality of scraping strips in the central area of the scraping strip array are deviated along a rotating direction of the rolling body to provide an avoidance area; and the avoidance area communicates with the suction channel mouth.

15. The floor brush according to claim 14, wherein a size of a radial opening of the suction channel mouth decreases gradually from a first side of the suction channel mouth to a second side of the suction channel mouth, wherein the first side of the suction channel mouth is adjacent to the rolling body, and the second side of the suction channel mouth is away from the rolling body; and the part of the plurality of scraping strips deviated along the rotating direction of the rolling body are arranged along an edge of the first side of the suction channel mouth.

16. A floor cleaning device, comprising: a body; andthe floor brush according to claim 11, wherein the floor brush is provided on the body.

17. The floor cleaning device according to claim 16, wherein the floor cleaning device is a sweeper.

18. The floor cleaning device according to claim 16, wherein the floor cleaning device is a dust collector.