Rolling brush assembly and dusting floor brush

Abstract

The present application relates to a kind of roll brush assembly and dusting floor brush.The roll brush assembly includes: the elongated main body, with first end, second end, outer wall surface between first end and second end and central axis passing through first end and second end;One or more flexible supports are carried on the outer wall surface of the elongated main body, each flexible support includes bottom and top mutually away in radial direction, bottom is engaged with the outer wall surface of the elongated main body;And one or more bristle strips, each bristle strip has base and bristle portion extending from base;The base of each bristle strip is supported at the top of corresponding flexible support, and at least a part of the bristle portion of bristle strip extends radially outward from the end face of corresponding top end face.The present application is equivalent to increase the equivalent diameter of roll brush by setting the bristle strip structure of flexible support, so that hair is not easy to wind on the elongated main body, significantly reduce the frequency and difficulty of cleaning entangled hair.

Description

Technical Field

[0001] This application belongs to the field of surface cleaning technology, and specifically relates to a roller brush assembly and a floor brush for vacuum cleaners. Background Technology

[0002] The floor brush is one of the core components of a vacuum cleaner, and its performance directly affects the overall cleaning efficiency. As a key moving part of the floor brush, the roller brush assembly typically consists of a rotatable, slender body and cleaning components mounted on it. During operation, the roller brush rotates at high speed, sweeping across the surface to be cleaned (such as carpets and floors) through the cleaning components, raising dust and debris into the airflow, which is then sucked into the dust cup or dust bag through the suction channel.

[0003] To improve cleaning effectiveness and reduce the entanglement of hair-like debris (such as human hair and pet hair), existing designs commonly employ a technique of alternating bristle strips and flexible scraper strips on the outer circumference of the roller brush body. The bristle strips primarily sweep up fine dust, while the flexible scraper strips (usually made of rubber or TPE) make linear contact with the surface being cleaned during rotation, generating a scraping and patting action that helps to remove hair and particles adhering to the surface and, to some extent, prevents hair from entangled on the roller brush body.

[0004] However, in actual use, although the alternating arrangement of bristles and flexible scrapers reduces the overall amount of hair entanglement on the brush body, some hair (especially longer hair) is not completely sucked into the suction channel after being scraped by the scrapers. Instead, it slides along the surface of the bristles and gradually moves to the base of the bristles (the area where the bristles connect to the brush body). As the brush continues to rotate, these hairs gradually accumulate, entangle, and tighten at the base of the bristles, eventually forming a difficult-to-remove entanglement layer. The hair entangled on the bristles inhibits their free swing and rebound in the radial direction, resulting in a significant decrease in the bristle tips' ability to contact and sweep up fine dust (such as pollen, dander, and mite excrement). Furthermore, the accumulated hair is difficult to remove completely by manual cleaning, and the cleaning performance deteriorates significantly after long-term use, affecting the user experience. Summary of the Invention

[0005] The purpose of this application is to provide a roller brush assembly and a floor brush for a vacuum cleaner, which aims to reduce or prevent hair from slipping from the ends of the bristles on the roller brush to its base and becoming entangled, while maintaining the effective collection performance of the bristles for fine dust.

[0006] To achieve the above objectives, in a first aspect, this application adopts the following technical solution: a roller brush assembly, comprising: an elongated body having a first end, a second end, an outer peripheral wall surface located between the first end and the second end, and a central axis passing through the first end and the second end; one or more flexible supports supported on the outer peripheral wall surface of the elongated body, each of the flexible supports including a bottom and a top that are radially spaced apart from each other, the bottom engaging with the outer peripheral wall surface of the elongated body; and one or more bristle strips, each of the bristle strips having a base and bristle portions extending from the base; the base of each bristle strip being supported at the top of the corresponding flexible support, and at least a portion of the bristle portions of the bristle strip extending radially outward from the end face of the corresponding top.

[0007] In some specific embodiments, the base is fixedly connected to the top.

[0008] In some specific embodiments, the base is bonded and fixed to the end face or outer peripheral sidewall of the top.

[0009] In some specific embodiments, the base is provided with a slot, and the top is provided with a protrusion adapted to the slot, and the base and the top are engaged by the slot and the protrusion.

[0010] In some specific embodiments, the top is provided with a receiving groove, the base is at least partially received in the receiving groove, and is fixedly connected to at least a portion of the inner wall surface of the receiving groove.

[0011] In some embodiments, the receiving groove has a radially outward opening, the base is received in the receiving groove through the opening, and at least a portion of the bristles extends radially outward from the opening.

[0012] In some specific embodiments, the receiving groove is a T-shaped groove.

[0013] In some specific embodiments, the base is bonded and fixed to at least a portion of the inner wall surface of the receiving groove.

[0014] In some specific embodiments, the radial height of the flexible support extending outward from the outer peripheral wall of the elongated body is 8-15 mm.

[0015] In some specific embodiments, the radial height of the bristles extending outward from the end face of the corresponding top is 3-5 mm.

[0016] In some specific embodiments, the bristle portion includes bristles with a diameter of less than 0.08 and a density of more than 12,000 bristles per square centimeter.

[0017] In some embodiments, the flexible support is made of rubber or silicone resin.

[0018] In some embodiments, the top and the bristle strip mounted thereon are in a continuous spiral shape, the continuous spiral shape extending axially from the first end to the second end.

[0019] In some specific embodiments, there are multiple flexible supports, which are distributed circumferentially around the central axis of the elongated body.

[0020] In some specific embodiments, the number of flexible supports is one, and it is a ring structure, wherein the flexible support is sleeved on the outer peripheral wall of the slender body.

[0021] In some specific embodiments, the outer peripheral wall of the elongated body is detachably connected to the bottom of the flexible support.

[0022] In some specific embodiments, a slot and a plug are provided between the outer peripheral wall of the elongated body and the bottom of the flexible support to form a slot positioning structure.

[0023] The present invention also provides a vacuum floor brush for attachment to a vacuum cleaner, the vacuum floor brush including a housing defining a brush cavity, a roller brush assembly as described above, and a suction channel, the roller brush assembly being rotatably arranged in the brush cavity about the central axis.

[0024] Compared with existing technologies, the roller brush assembly and vacuum floor brush provided by this invention have the following beneficial effects: By installing the bristle strips on a flexible support, the working diameter of the roller brush assembly can be effectively increased, thereby reducing the possibility of hair getting tangled on the slender body and significantly reducing the frequency and difficulty of cleaning tangled hair. Simultaneously, the bristle strips located at the top of the flexible support can effectively capture fine dust, achieving fine cleaning. Furthermore, the flexible support is made of elastic material, providing good cushioning and vibration absorption performance when in contact with the ground, helping to reduce operating noise and improve the user experience. In this solution, the centrifugal force generated by the rotation of the roller brush causes the bristle strips supported by the flexible support to extend outward to a certain extent, further increasing the effective working diameter of the roller brush. This design works in two ways: firstly, the support structure of the flexible support itself increases the equivalent diameter of the roller brush; secondly, the diameter is further expanded under the action of centrifugal force, making it less likely for hair of a certain length to get tangled. Attached Figure Description

[0025] Figure 1 This application provides a perspective view of an embodiment of a vacuum floor brush;

[0026] Figure 2 for Figure 1 A cross-sectional view of the vacuum brush in the middle;

[0027] Figure 3 A perspective view of a roller brush assembly according to an embodiment is provided for this application;

[0028] Figure 4 for Figure 3 The main view of the scroll brush component in the text;

[0029] Figure 5 for Figure 3 A cross-sectional view of the roller brush assembly; showing the assembly relationship of the slender body, flexible support, and bristle strips;

[0030] Figure 6-8 A cross-sectional view of the roller brush assembly for other embodiments provided in the application; showing the assembly relationship of the elongated body, the flexible support, and the bristle strips.

[0031] The markings in the diagram are as follows: 100, vacuuming brush; 1, housing; 11, brush chamber; 2, roller brush assembly; 21, slender main body; 211, first end; 212, second end; 213, outer peripheral wall; 213a, groove; 22, flexible support; 221, bottom; 222, top; 223, receiving groove; 223a, opening; 23, bristle strip; 231, base; 232, bristle section; 24, first end cap; 25, second end cap; 3, suction channel; H1, radial height of support; H2, radial height of bristles; L, central axis. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 2 The illustration shows a vacuum floor brush 100 provided in this application, for attachment to a vacuum cleaner (such as a vacuum cleaner main unit or a handheld vacuum cleaner). The vacuum floor brush 100 includes a housing 1 with a brush chamber 11 at the front, a roller brush assembly 2 disposed within the brush chamber 11, and a suction channel 3 communicating with the brush chamber 11. The roller brush assembly 2 is rotatably disposed within the brush chamber 11. The roller brush assembly 2 sweeps up dust, debris, and other impurities from the surface to be cleaned (such as a floor or carpet) through its rotational motion, facilitating the entry of suction airflow into the suction channel 3. Besides being suitable for vacuum floor brushes, this roller brush assembly 2 can also be used in surface cleaning devices such as robotic vacuum cleaners.

[0034] like Figures 2 to 5 As shown, the roller brush assembly 2 includes a rotatable elongated body 21, multiple flexible supports 22, multiple bristle strips 23, a first end cap 24, and a second end cap 25. The elongated body 21 is a cylindrical hollow structure with a first end 211, a second end 212, an outer peripheral wall surface 213 located between the first end 211 and the second end 212, and a central axis L passing through the first end 211 and the second end 212. The outer peripheral wall surface 213 is the radial outer boundary of the elongated body 21, which can be a continuous smooth cylindrical surface or an envelope surface defined by the highest points of multiple radial protrusions on the outer surface of the elongated body 21. In this example, the outer peripheral wall surface 213 refers to the envelope surface defined by the highest points of multiple radial protrusions on the outer surface of the elongated body 21.

[0035] The first end cap 23 is installed at the first end 211, and the second end cap 24 is installed at the second end 212. In use, the slender body 21 rotates around its central axis L under the drive of the drive device (such as an external motor or an internal motor). The brush strips 23 sweep up the dust and debris on the surface to be cleaned, suspending them in the brush chamber 11, and then suck them into the dust cup or dust bag of the vacuum cleaner through the suction channel 3.

[0036] Multiple flexible supports 22 are supported on an elongated body 21 and are evenly distributed circumferentially. In this example, the roller brush assembly 2 is provided with four flexible supports 22. These flexible supports 22 are evenly mounted circumferentially on the outer peripheral wall 213 of the elongated body 21. Each flexible support 22 extends at least partially axially from the first end 211 toward the second end 212. In this embodiment, each flexible support 22 extends axially from the first end 211 to the second end 212 and is arranged in a continuous spiral (e.g., Figure 3 (As shown). The roller brush assembly 2 can continuously sweep the cleaning surface during rotation, and at the same time, it helps to transport the swept debris towards the center or towards the suction port, thereby improving cleaning efficiency.

[0037] The flexible support 22 can be made of rubber or silicone resin. Rubber and silicone resin materials have good elasticity and abrasion resistance, maintaining stable support performance over long-term use, while also exhibiting good adaptability to clean surfaces. The flexible support 22 has a bottom 221 and a top 222 that are radially separated. The bottom 221 engages with the outer peripheral wall 213 of the elongated body 21.

[0038] The bristle strip 23 has a base 231 and bristle portions 232 extending from the base 231. The bristle portions 232 of the bristle strip 23 are made of a high-performance bristle material. As a preferred embodiment, the bristle diameter of the bristle portion 232 is less than 0.08 mm, and the density is greater than 12,000 bristles / cm². This fine bristle effectively captures tiny dust particles, making it particularly suitable for fine cleaning of hard floor surfaces, while its softness prevents scratches on the floor.

[0039] The bristle strip 23 is mounted on the flexible support 22. Specifically, the base 231 of the bristle strip 23 is fixedly supported at the corresponding top 222 of the flexible support 22, and at least a portion of the bristle portion 231 of the bristle strip 23 extends radially outward from the end face 222a of the corresponding top 222. In this example, the top 222 of the flexible support 22 and the bristle strip 23 mounted thereon are in a continuous spiral shape, which extends axially from the first end 211 to the second end 212.

[0040] By setting up the flexible support 22 and brush strip 23 as described above, the brush strip 23 can produce appropriate elastic deformation when it comes into contact with the cleaning surface, which not only ensures effective cleaning of the floor, but also avoids damage to the floor surface due to rigid contact.

[0041] like Figure 4 As shown, the top 221 of the flexible support 22 is provided with a receiving groove 223. This receiving groove 223 is a groove structure that spirally extends from the first end 211 toward the second end 212, and has a radially outward opening 223a. The base 231 of the bristle strip 23 is received within the receiving groove 223, and a portion of the bristles 232 of the bristle strip 23 extends radially outward from the opening 223a. In this example, the receiving groove 223 is a T-shaped groove, the opening 223a is narrow, the base 231 of the bristle strip 23 is received in the wide portion of the T-shaped groove, and the bristles 232 of the bristle strip 23 extend from the narrow opening of the T-shaped groove. The T-shaped groove structure effectively prevents the bristle strip 23 from detaching from the receiving groove 23 during high-speed rotation, improving the reliability of the connection. Furthermore, the base 231 of the bristle strip 23 is bonded to at least a portion of the inner wall surface of the T-groove. This bonding method further enhances the connection strength between the bristle strip 23 and the flexible support 22, preventing the bristle strip 23 from shifting or falling off during use.

[0042] To adapt to the needs of different cleaning scenarios, the flexible support 22 has a radial height H1 extending radially outward from the outer peripheral wall 213 of the elongated body 21. This radial height H1 can be designed according to factors such as the roller brush diameter and the object being cleaned; for example, it can be designed to be 8-15mm. Correspondingly, each bristle strip 23 has a bristle radial height H2 (i.e., the height exceeding the end face 222a of the corresponding top 221 in the radial direction) extending radially outward from the end face 222a of the corresponding top 222. For example, this radial height H2 can be designed to be 3mm to 5mm. To ensure that the bristle strips can efficiently sweep up debris such as hair from the surface to be cleaned, the bristle radial height H2 should generally not be too high. Designers can achieve a good balance between cleaning ability and surface protection by reasonably configuring the ratio of support height to bristle height.

[0043] In this embodiment, the outer peripheral wall 213 of the elongated body 21 is detachably connected to the bottom 221 of the flexible support 22. Specifically, the outer peripheral wall 213 of the elongated body 21 has a plurality of slots 213a, the same number as the flexible support 22. The shape of the slots 213a is adapted to the shape of the bottom 221 of the flexible support 22. The slots 213a extend axially and have insertion openings 213b facing the first end 211 and / or the second end 212. The bottom 221 of the flexible support 22 has a plurality of plug structures adapted to the slots 213a, which can be inserted into the slots 213a from one of the first end 211 and the second end 212 toward the other. This slot positioning structure, formed by the interlocking slots and plugs, makes the assembly and disassembly of the flexible support 22 and the bristle strips 23 mounted thereon more convenient, facilitating user maintenance or replacement. As a preferred embodiment, the slot 213a is a T-shaped slot that forms a T-shaped fit with the bottom 221 of the flexible support 22, ensuring that the flexible support 22 and the bristle strips 23 thereon will not fall off the slender body 21 during high-speed rotation.

[0044] like Figure 6 The diagram illustrates a roller brush assembly 5 according to another embodiment. This roller brush assembly 5 also includes a rotatable elongated body 51, multiple flexible supports 52, and multiple bristle strips 53. The mounting structure of the bottom 521 of the flexible supports 52 to the outer peripheral wall 513 of the elongated body 51 is similar to that of roller brush assembly 2, and will not be described again here. The mounting scheme of the top 522 of the flexible supports 52 to the bristle strips 53 differs significantly from that of roller brush assembly 2. In this example, the top 522 of the flexible supports 52 is a solid structure, and the base 531 of each bristle strip 53 is bonded to the outer peripheral sidewall 522a of the top 522. Alternatively, it can be configured to be bonded to the end face 522a of the top 522. A portion of the bristle portion 532 of each bristle strip 53 extends radially outward from the end face 522a of the corresponding top 522.

[0045] like Figure 7 As shown, this illustrates a roller brush assembly 6 according to another embodiment. This roller brush assembly 6 also includes a rotatable elongated body 61, multiple flexible supports 62, and multiple bristle strips 63. The mounting structure of the bottom 621 of the flexible supports 62 to the outer peripheral wall 613 of the elongated body 61 is similar to that of roller brush assemblies 2 and 5, and will not be described again here. The mounting scheme of the top 622 of the flexible supports 62 to the bristle strips 63 differs significantly from that of roller brush assemblies 2 and 5. In this example, the base 631 of each bristle strip 63 has a groove 631a, and the top 622 of the flexible supports 622 has a protrusion 622a that matches the groove 631a (the protrusion 622a includes the end face of the top 622). The base 631 of each bristle strip 63 is engaged with the corresponding top 622 via a slot 631a and a protrusion 622a, thereby mounting each bristle strip 63 at the top 622 of the corresponding flexible support 62. The bristle portion 632 of each bristle strip 63 extends radially outward from the end face of the corresponding top 622.

[0046] like Figure 8 As shown, a roller brush assembly 7 is illustrated in another embodiment. This roller brush assembly 7 also includes a rotatable elongated body 71, a flexible support 72, and multiple bristle strips 73. The mounting structure of the bottom 721 of the flexible support 72 to the outer peripheral wall 713 of the elongated body 71 differs from that of the brush assembly 2, roller brush assembly 5, and roller brush assembly 6 described above. In this example, the flexible support 72 has a ring-shaped structure and is fitted onto the outer peripheral wall 713 of the elongated body 71. The inner side of the flexible support 72 forms a bottom 721 that engages with the outer peripheral wall 713 of the elongated body 71, and the outer side forms a top 722 for mounting the multiple bristle strips 73. The bottom 721 has multiple positioning grooves 721a distributed circumferentially, and the outer peripheral wall 713 of the elongated body 71 has multiple positioning protrusions 713a distributed circumferentially. Multiple positioning grooves 721a and multiple positioning protrusions 713a engage with each other to mount the flexible support 72 onto the outer peripheral wall 713 of the elongated body 71. Multiple T-shaped receiving grooves 722a are provided on the outer end 722, the base 731 of the bristle strip 73 is fixed in the receiving groove 722a, and a portion of the bristle portion 732 of the bristle strip 73 extends radially outward from the end face of the corresponding top 722.

[0047] In other embodiments, multiple bristle strips may be installed on one top; of course, the bristle strips may also be replaced by other types of floor cleaning elements; or multiple types of floor cleaning elements including bristle strips may be installed on one top at the same time, or alternately on different tops.

[0048] In summary, the roller brush assembly and vacuum floor brush provided by the present invention are configured with one or more flexible supports and one or more bristle strips mounted on the flexible supports. Because the flexible supports effectively increase the diameter of the slender body, hair is less likely to entangle. At the same time, the flexible deformation of the supports allows large particles to easily enter, while the bristle strips placed on top of the flexible supports can collect fine dust.

[0049] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A roller brush assembly, characterized in that, include: The elongated body has a first end, a second end, an outer peripheral wall surface located between the first end and the second end, and a central axis passing through the first end and the second end; One or more flexible supports are supported on the outer peripheral wall of the elongated body, each of the flexible supports including a bottom and a top that are radially spaced apart from each other, the bottom engaging with the outer peripheral wall of the elongated body; as well as One or more bristle strips, each of the bristle strips having a base and bristle portions extending from the base; the base of each bristle strip is supported at the top of the corresponding flexible support, and at least a portion of the bristle portions of the bristle strip extends radially outward from the end face of the corresponding top.

2. The roller brush assembly according to claim 1, characterized in that, The base is fixedly connected to the top.

3. The roller brush assembly according to claim 2, characterized in that, The base is bonded and fixed to the end face or outer peripheral sidewall of the top.

4. The roller brush assembly according to claim 2, characterized in that, The base is provided with a slot, and the top is provided with a protrusion that matches the slot. The base and the top are engaged by the slot and the protrusion.

5. The roller brush assembly according to claim 2, characterized in that, The top is provided with a receiving groove, and the base is at least partially received in the receiving groove and fixedly connected to at least a portion of the inner wall surface of the receiving groove.

6. The roller brush assembly according to claim 5, characterized in that, The receiving groove has a radially outward opening, the base is received in the receiving groove through the opening, and at least a portion of the bristles extends radially outward from the opening.

7. The roller brush assembly according to claim 6, characterized in that, The receiving groove is a T-shaped groove.

8. The roller brush assembly according to claim 5, characterized in that, The base is bonded and fixed to at least a portion of the inner wall surface of the receiving groove.

9. The roller brush assembly according to claim 1, characterized in that, The flexible support extends outward from the outer peripheral wall of the elongated body at a radial height of 8-15 mm.

10. The roller brush assembly according to claim 1, characterized in that, The radial height of the bristles extending outward from the corresponding end face of the top is 3-5 mm.

11. The roller brush assembly according to claim 1, characterized in that, The bristle section includes bristles with a diameter of less than 0.08 and a density of more than 12,000 bristles per square centimeter.

12. The roller brush assembly according to claim 1, characterized in that, The flexible support is made of rubber or silicone resin.

13. The roller brush assembly according to claim 1, characterized in that, The top and the bristle strip mounted thereon are in a continuous spiral shape, which extends axially from the first end to the second end.

14. The roller brush assembly according to claim 1, characterized in that, The number of flexible supports is multiple, and they are distributed circumferentially around the central axis of the slender main body.

15. The roller brush assembly according to claim 1, characterized in that, The flexible support is one in number and has a ring-shaped structure. The flexible support is sleeved on the outer peripheral wall of the slender body.

16. The roller brush assembly according to claim 1, characterized in that, The outer peripheral wall of the elongated body is detachably connected to the bottom of the flexible support.

17. The roller brush assembly according to claim 16, characterized in that, The outer peripheral wall of the slender body and the bottom of the flexible support are provided with a slot and a plug that cooperate with each other to form a slot positioning structure.

18. A floor brush for attaching to a vacuum cleaner, characterized in that, The vacuum brush includes a housing defining a brush cavity, a roller brush assembly as described in any one of claims 1-17, and a suction channel, wherein the roller brush assembly is rotatably arranged within the brush cavity about the central axis.

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