A roller brush structure and cleaning device

Abstract

This invention relates to the field of cleaning device technology, specifically to a roller brush structure and cleaning device. The roller brush structure includes a brush shaft and a brush body. The brush body includes a brush cylinder sleeved outside the brush shaft, and the brush cylinder is composed of multiple floating bodies spliced ​​together circumferentially. The floating bodies have a contracted state tightly wrapped around the outer circumference of the brush shaft and an expanded state that expands radially outward along the brush shaft under the action of centrifugal force. When the roller brush rotates at high speed, the floating bodies can expand radially outward along the brush shaft under the action of centrifugal force, thereby increasing the outer diameter of the brush body and increasing the entanglement radius of hair and other filamentous materials on the roller brush, making it less likely for hair to get tangled on the brush body. At the same time, the outwardly expanding floating bodies can also peel off or break the hair entangled on the brush body. Therefore, it can effectively reduce the entanglement of hair on the roller brush, improve the cleaning effect of the roller brush, and extend the service life of the machine.

Description

Technical Field

[0001] This invention relates to the field of cleaning device technology, and specifically to a roller brush structure and cleaning device. Background Technology

[0002] Vacuum cleaners and robotic vacuum cleaners are household appliances used for indoor cleaning. They remove dust from floors, carpets, walls, furniture, clothing, and various crevices. Indoor floor vacuum cleaners enable autonomous cleaning of the indoor environment, replacing manual labor, greatly reducing labor intensity and improving efficiency. They are suitable for indoor cleaning in homes and public places. With the increasing demand for cleaning hair and pet fur, the roller brushes on conventional vacuum cleaners and robotic vacuum cleaners are prone to getting tangled with long hair, especially during deep cleaning when the roller brush speed needs to be increased. At this time, hair and other fibrous materials are more likely to get tangled on the high-speed rotating roller brush. If not cleaned in time, it will directly affect the cleaning effect of the roller brush and the lifespan of the machine, affecting the user experience. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of existing roller brushes that are prone to hair entanglement, thereby providing a roller brush structure and cleaning device that can reduce hair entanglement.

[0004] To address the aforementioned problems, in a first aspect, the present invention provides a roller brush structure, comprising: a brush shaft and a brush body, wherein the brush body includes a brush cylinder sleeved outside the brush shaft, the brush cylinder being composed of multiple floating bodies spliced ​​together circumferentially; the floating bodies have a contracted state tightly wrapped around the outer periphery of the brush shaft and an expanded state expanding radially outward along the brush shaft under the action of centrifugal force.

[0005] Optionally, the floating body has an arc-shaped structure, and when the floating body is in a contracted state, multiple floating bodies can close together to form a complete circle.

[0006] Optionally, adjacent floating bodies are connected by elastic elements.

[0007] Optionally, the elastic element is a soft rubber membrane connected between two adjacent floating bodies, and there are multiple soft rubber membranes that connect multiple floating bodies into one unit.

[0008] Optionally, the brush body may further include bristles and / or adhesive strips fixedly disposed on the outer surface of the floating body.

[0009] Optionally, the brush body further includes bristles fixedly disposed on the brush shaft, the bristles having multiple bundles, the multiple bundles of bristles being arranged at intervals on the outer peripheral wall of the brush shaft; the floating body is provided with through holes for the bristles to extend out, the through holes being multiple, the multiple through holes being arranged one-to-one with the multiple bundles of bristles.

[0010] Optionally, the brush shaft is provided with a guide structure suitable for guiding the movement of the floating body and limiting the floating body in the circumferential direction.

[0011] Optionally, the brush shaft includes a brush shaft body and stop covers fixedly disposed at both ends of the brush shaft body; the guide structure includes a guide groove disposed on the stop cover, the guide groove extending radially along the brush shaft body; both ends of the floating body are respectively provided with guide ribs that slide in cooperation with the guide grooves, and the floating body is guided to move radially along the brush shaft through the sliding cooperation of the guide ribs and the guide grooves.

[0012] Optionally, the stop cover is provided with an anti-detachment structure to prevent the floating body from detaching from the brush shaft during outward expansion, and the anti-detachment structure is sealed on the outer periphery of the guide groove.

[0013] In a second aspect, the present invention provides a cleaning device, including a body and the aforementioned roller brush structure mounted to the body.

[0014] The present invention has the following advantages:

[0015] The roller brush structure provided by this invention includes a brush cylinder sleeved outside the brush shaft. The brush cylinder is composed of multiple floating bodies spliced ​​together circumferentially. The floating bodies have a contracted state tightly wrapped around the outer circumference of the brush shaft and an expanded state that expands radially outward along the brush shaft under the action of centrifugal force. With this design, when the roller brush rotates at high speed, the centrifugal force increases, and the floating bodies can expand radially outward along the brush shaft under the action of centrifugal force. This increases the outer diameter of the brush body, increasing the entanglement radius of hair and other filamentous materials on the roller brush, making it less likely for hair and other fine filamentous materials to get tangled on the brush body. Simultaneously, the outwardly expanding floating bodies can also peel off or break the hair entangled on the brush body. Therefore, it can effectively reduce hair entanglement on the roller brush, improve the cleaning effect of the roller brush and the service life of the machine, and effectively solve the problem of hair entanglement in existing roller brushes. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the roller brush structure in the embodiment is shown when each floating body is in a retracted state;

[0018] Figure 2 It shows Figure 1 Exploded view of the brush shaft and brush body of the medium roller brush structure after disassembly;

[0019] Figure 3 The figure shows a cross-sectional axonometric view of each floating body of the roller brush structure in the embodiment when they are in an expanded state;

[0020] Figure 4 It shows Figure 1 A sectional view;

[0021] Figure 5 It shows Figure 3 A sectional view.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Brush shaft; 11. Brush shaft body; 111. Limiting protrusion; 12. Stop cover; 121. Guide groove;

[0024] 2. Brush body; 21. Brush cylinder; 211. Floating body; 2111. Guide rib; 212. Elastic component; 22. Brush bristles. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Example 1

[0030] like Figures 1 to 5 As shown, this embodiment provides a roller brush structure, which includes a brush shaft 1 and a brush body 2. The brush shaft 1 can rotate around its central axis under the drive mechanism. The brush body 2 includes a brush cylinder 21 sleeved outside the brush shaft 1. The brush shaft 1 and the brush body 2 are engaged in the upper limit direction in the circumferential direction, and can drive the brush body 2 to rotate together when the brush shaft 1 rotates. The brush cylinder 21 is composed of multiple floating body parts 211 spliced ​​together in the circumferential direction. The floating body parts 211 have a contracted state that tightly wraps around the outer circumference of the brush shaft 1 and an expanded state that expands radially outward along the brush shaft 1 under the action of centrifugal force.

[0031] By adopting the above design, combined with Figure 1 , Figure 3 , Figure 5 As shown, when the roller brush rotates at high speed, the centrifugal force increases. Under the action of centrifugal force, the floating body 211 can expand outward along the radial direction of the brush shaft 1, thereby increasing the outer diameter of the brush body 2 and increasing the entanglement radius of hair and other filaments on the roller brush. This makes it less likely for hair and other fine filaments to get tangled on the brush body 2. At the same time, the outwardly expanding floating body 211 can also peel off or break the hair entangled on the brush body 2. Therefore, it can effectively reduce the entanglement of hair on the roller brush, improve the cleaning effect of the roller brush and the service life of the machine, and effectively solve the problem of hair easily getting entangled in the roller brush in the prior art.

[0032] In a preferred embodiment of this invention, the floating body 211 has an arc-shaped structure. When the floating body 211 is in a retracted state, multiple floating bodies 211 can close together to form a complete circle. The inner diameter of this circle matches the outer diameter of the brush shaft 1. This means that the inner diameter of the circle formed by the multiple floating bodies 211 is equal to or slightly larger than the outer diameter of the brush shaft 1. This design allows the floating body 211 to tightly wrap around the brush shaft 1 when in a retracted state, improving the fit between the brush shaft 1 and the brush cylinder 21.

[0033] Of course, in other alternative embodiments, the floating body 211 may also be a non-arc structure. For example, each floating body 211 is a multi-sided structure, and multiple floating bodies 211 can be spliced ​​together to form a polygon with an approximately circular cross-section when contracted.

[0034] In some embodiments of this example, the floating body 211 is an arc-shaped plate structure. The arc of the floating body 211 is the same as that of the brush shaft 1, and the floating body 211 and the brush shaft 1 are concentrically arranged. The extension direction of the floating body 211 is parallel to the axial direction of the brush shaft 1, and the extension length of the floating body 211 matches the length of the brush shaft 1. This can be understood as the length of the floating body 211 being equal to or slightly less than the length of the brush shaft 1. When the floating body 211 is in a retracted state, multiple floating bodies 211 can close together to form a cylindrical structure, which is fitted over the brush shaft 1.

[0035] In some embodiments of this example, the floating body 211 is made of a high-density material such as rubber or silicone to increase the weight of the floating body 211, improve its inertial force, and prevent the floating body 211 from being too light and not easily moving outward under the action of centrifugal force.

[0036] In a preferred embodiment of this invention, the multiple floating bodies 211 are identical in shape, size, weight, etc. With this design, each floating body 211 is subjected to uniform force, ensuring the balance and stability of the entire roller brush structure when the floating body 211 expands outward under the action of centrifugal force.

[0037] In this embodiment, combined with Figure 3 , Figure 5 As shown, adjacent floating bodies 211 are connected by elastic elements 212, which are stretchable and contractible. When the brush cylinder 21 is assembled onto the brush shaft 1, the elastic element 212 is stretched. After the brush cylinder 21 is fitted onto the brush shaft 1, the elastic element 212 contracts and resets, ensuring all floating bodies 211 are tightly wrapped around the brush shaft 1. When the roller brush rotates at high speed, the elastic element 212 is stretched as the floating bodies 211 expand outwards. When the roller brush rotates at low speed or is stationary, the elastic element 212 contracts, allowing the floating bodies 211 to reset and tightly wrap around the brush shaft 1 under the action of the elastic element 212.

[0038] In some embodiments of the above examples, the elastic element 212 may be a tension spring, an elastic rope, a stretchable and contractible soft rubber membrane, or the like.

[0039] For example, when the elastic element 212 is a tension spring, a mounting groove for accommodating the tension spring can be provided in the splicing end face of one of the two adjacent floating bodies 211, and a connecting groove can be provided in the splicing end face of the other floating body 211. One end of the tension spring is fixed in the mounting groove, and the other end is connected and fixed in the connecting groove. When the floating body 211 is in a retracted state, the tension spring can be completely retracted and accommodated in the mounting groove. For example, the two ends of the tension spring can be fixed in the mounting groove and the connecting groove by adhesive bonding.

[0040] For example, when the elastic element 212 is an elastic rope, the elastic rope can be connected between the two floating bodies 211 in the same way as a tension spring. Alternatively, the two ends of the elastic rope can be directly connected to the inner sidewalls of the two floating bodies 211.

[0041] When the elastic element 212 is a tension spring or elastic rope, at least a plurality of tension springs or elastic ropes are provided between two adjacent floating bodies 211. The plurality of tension springs or elastic ropes are arranged at intervals along the axial direction of the brush shaft 1 to ensure the stability of the overall connection of the floating bodies 211.

[0042] In the preferred embodiment of this example, see Figure 3 , Figure 5 As shown, the elastic element 212 is a soft rubber membrane connecting two adjacent floating bodies 211. In this embodiment, a soft rubber membrane is used as the elastic element 212 connecting two adjacent floating bodies 211. On the one hand, the soft rubber membrane is relatively thin, does not occupy too much space, is less likely to interfere with the brush shaft 1, and is easy to install. On the other hand, only one soft rubber membrane is needed to connect the two adjacent floating bodies 211, eliminating the need for multiple soft rubber membranes, and the reliability and stability of the connection are higher.

[0043] Based on the above embodiments, in a preferred embodiment, the soft rubber film is made of soft rubber material. The soft rubber film connects multiple floating bodies 211 into one unit through an overmolding process. When the brush shaft 1 is moving at low speed or in a stationary state, all floating bodies 211 can be formed into a complete circle under the elastic force of the soft rubber film.

[0044] Based on the above embodiments, in another preferred embodiment, the soft rubber membrane is a long strip structure with the same length as the floating body 211, and the two long strip edges of the soft rubber membrane are respectively fixedly connected to the inner walls of two adjacent floating bodies 211. Optionally, the soft rubber membrane can be fixed to the inner wall of the floating body 211 by adhesive bonding.

[0045] Furthermore, when the floating body 211 is in a contracted or expanded state, the soft rubber film can connect multiple floating bodies 211 into a closed structure, thereby preventing external dust and moisture from entering the brush cylinder and causing wear and corrosion of the brush shaft 1.

[0046] Based on the above embodiments, in this embodiment, there are multiple soft rubber films, which connect multiple floating bodies 211 into one unit. It is understood that the number of soft rubber films is the same as the number of floating bodies 211. For example, if there are two floating bodies 211, there are two soft rubber films; if there are three floating bodies 211, there are three soft rubber films.

[0047] In a preferred embodiment of this example, there are four floating bodies 211, with the central angles of the four floating bodies 211 being 90 degrees. There are also four soft rubber films, which are connected between the four floating bodies 211 to form an integrated structure.

[0048] In some embodiments of this example, the brush shaft 1 and the brush cylinder 21 are positioned in a concave-convex fit in the circumferential direction. In this embodiment, the concave-convex fit enables the brush shaft 1 and the brush cylinder 21 to form an effective positioning in the circumferential direction. The fit is simple and reliable, ensuring that the brush shaft 1 can drive the brush body 2 to rotate synchronously when it rotates.

[0049] For example, see Figures 2 to 5 As shown, a plurality of limiting protrusions 111 are spaced apart on the outer peripheral wall of the brush shaft 1 along the circumference of the brush shaft 1, and the plurality of limiting protrusions 111 correspond one-to-one with the plurality of floating bodies 211. Optionally, the limiting protrusions 111 are strip-shaped protrusions extending along the axial direction of the brush shaft 1. The inner wall of the floating body 211 is provided with limiting grooves, which cooperate with the limiting protrusions 111. When the floating body 211 is in the retracted state, the interlocking of the limiting grooves and the limiting protrusions 111 causes the floating body 211 and the brush shaft 1 to be limited in the circumferential direction, ensuring the synchronicity and consistency of the movement of the brush body 2 and the brush shaft 1.

[0050] In one embodiment of this invention, the brush body 2 further includes brush bristles 22 and / or adhesive strips fixedly disposed on the outer surface of the floating body 211.

[0051] In one embodiment described above, the outer surface of the floating body 211 is provided with only bristles 22. The bristles 22 are in multiple bundles, arranged linearly along the axial direction of the brush shaft 1 on the outer surface of the floating body 211. Each floating body 211 has at least one row of bristles 22, and the multiple rows of bristles 22 are evenly spaced circumferentially on the outer peripheral wall of the brush cylinder 21. The bristles 22 can effectively sweep away dry debris, dust, and other waste from the ground.

[0052] In another embodiment described above, the outer surface of the floating body 211 is provided with only adhesive strips. These adhesive strips are ribbed structures made of rubber, silicone, or plastic, and at least one adhesive strip is provided on each floating body 211. The adhesive strips extend axially along the brush shaft 1, and their length is the same as or slightly less than the length of the floating body 211. Multiple adhesive strips are arranged at equal intervals along the circumferential direction on the outer peripheral wall of the brush cylinder 21. Alternatively, the adhesive strips can be made of foam or sponge. These adhesive strips effectively remove stubborn dirt adhering to the ground, providing better cleaning power.

[0053] In another preferred embodiment of the above-described embodiments, the outer surface of the floating body 211 is provided with rubber strips and bristles 22, and the rubber strips and bristles 22 are alternately distributed along the circumference of the roller brush structure. The bristles 22 are used to clean dry garbage on the ground, and the rubber strips clean dirt attached to the ground. Furthermore, the rubber strips can deform when subjected to external force, thereby peeling off the hair wrapped around the bristles 22 and / or the brush cylinder 21.

[0054] In one embodiment of this invention, the brush body 2 further includes bristles 22 fixedly disposed on the brush shaft 1. The bristles 22 are arranged in multiple bundles, spaced apart on the outer peripheral wall of the brush shaft 1. The floating body 211 has multiple through holes through which the bristles 22 can extend, each corresponding to one of the multiple bristle bundles 22. The size of each through hole is equal to or slightly larger than the outer diameter of a single bristle bundle 22.

[0055] Based on the above embodiments, in a preferred embodiment, multiple rows of bristles 22 are arranged circumferentially on the outer peripheral wall of the brush shaft 1, and each row of bristles 22 includes multiple bundles of bristles arranged axially along the brush shaft 1. Each bundle of bristles is composed of several bristle filaments arranged closely together.

[0056] This embodiment, through the design of the bristles 22 being fixed to the brush shaft 1 and extending through the through holes in the floating body 211, ensures the original cleaning effect of the bristles 22 while also limiting the floating body 211 in the circumferential direction, improving the stability of the circumferential fit between the brush shaft 1 and the brush body 2. Furthermore, when the floating body 211 expands outward, it can also peel off the hair wrapped around the bristles 22, further reducing the entanglement of hair on the brush body 2.

[0057] As is well known, the bristles 22 on a roller brush are relatively fine, and the spacing between two adjacent bristle bundles 22 is small. Generally, hair will wrap around the bristles 22 multiple times or wrap around the roots of the bristles 22, making it very difficult to clean. However, in this embodiment, through the cooperation of the through hole on the floating body 211 and the bristles 22, when the floating body 211 expands outward, the hair wrapped around the bristles 22 can be brushed off, effectively removing the hair wrapped around the bristles 22 and greatly solving the user's problem.

[0058] In this embodiment, the bristles 22 can be directly fixed to the brush shaft 1 or the floating body 211 using existing and relatively mature bristle implantation technology.

[0059] In one embodiment of this invention, the brush shaft 1 is provided with a guide structure suitable for guiding the movement of the floating body 211 and limiting the movement of the floating body 211 in the circumferential direction. The guide structure can be a guide groove, guide rib, guide hole, or guide rod, etc. By guiding the movement direction of the floating body 211 through the provided guide structure, it is ensured that it can expand its diameter when the roller brush rotates at high speed, thereby reducing hair entanglement.

[0060] Specifically, in one embodiment, the brush shaft 1 includes a brush shaft body 11 and stop covers 12 fixedly disposed at both ends of the brush shaft body 11. During assembly, the brush cylinder 21 is sleeved on the brush shaft body 11, and the stop covers 12 are sealed on the outer sides of both ends of the brush shaft body 11. The stop covers 12 can limit the brush cylinder 21 in the axial direction of the brush shaft 1. Optionally, the stop covers 12 can be integrally formed with the brush shaft body 11, or fixed together by means of bonding, welding, etc., or connected together by a detachable means. Optionally, the stop covers 12 are disc structures with an outer diameter larger than that of the brush shaft body 11, and the stop covers 12 are coaxially disposed with the brush shaft body 11.

[0061] Preferably, the stop cover 12 is detachably connected and fixed to the brush shaft body 11, for example, by means of screws or snap-fit. This detachable connection facilitates assembly and disassembly. When hair is trapped between the brush cylinder 21 and the stop cover 12, it is easy to remove the stop cover 12 from the brush cylinder 21, thus easily removing the hair trapped between them. Therefore, it is more convenient to remove hair entangled on the roller brush.

[0062] Furthermore, the guiding structure includes a guide groove 121 disposed on the stop cover 12, the guide groove 121 extending radially along the brush shaft body 11. Guide ribs 2111 are respectively disposed at both ends of the floating body 211, which slide in cooperation with the guide groove 121. The sliding cooperation between the guide ribs 2111 and the guide groove 121 guides the floating body 211 to move radially along the brush shaft 1.

[0063] In one embodiment of the above scheme, the guide groove 121 is a groove formed on one side wall of the stop cover 12 facing the brush shaft body 11. Of course, in other alternative embodiments, the guide groove 121 may also be a through groove that extends along the axial direction of the stop cover 12.

[0064] Preferably, to ensure the structural strength of the stop cover 12 and to prevent the guide ribs 2111 from interfering with other components by passing through the guide groove 121, the guide groove 121 is designed as a recess in this embodiment. The guide groove 121 extends radially from the center of the stop cover 12 outwards along its periphery to guide the floating body 211 to move radially along the brush shaft 1 during contraction and expansion. The guide ribs 2111 are integrally formed protruding rib structures on the outer sides of both end walls of the floating body 211, and the guide ribs 2111 can slide in the guide groove 121 along its guiding direction.

[0065] In the above embodiments, each of the floating bodies 211 corresponds to at least one of the guide grooves 121.

[0066] In this embodiment, the cooperation of the guide groove 121 and the guide rib 2111 enables the stop cover 12 and the floating body 211 to form a limit in the circumferential direction, thereby effectively ensuring that the floating body 211 can still rotate synchronously with the brush shaft 1 when it is in the expanded state.

[0067] Preferably, each floating body 211 corresponds to two guide grooves 121, and the two guide grooves 121 are arranged at intervals on the stop cover 12. Each floating body 211 has an arc-shaped end wall on both sides, and two guide ribs 2111 are respectively provided at each end of the arc-shaped end wall. The two guide grooves 121 and the two guide ribs 2111 of the floating body 211 are matched one-to-one. Under the action of the two guide grooves 121 and the two guide ribs 2111, the stability of the movement of each floating body 211 can be effectively ensured, and the position of the floating body 211 can be prevented from deviating during movement.

[0068] In a preferred embodiment of this example, the stop cover 12 is provided with an anti-detachment structure to prevent the floating body 211 from detaching from the brush shaft 1 during outward expansion. The anti-detachment structure is sealed on the outer periphery of the guide groove 121.

[0069] In some embodiments, the end of the guide groove 121 extends to the outer periphery of the stop cover 12. It can be understood that the end of the guide groove 121 is through. The anti-detachment structure can be a limiting ring fixedly disposed on the outer periphery of the stop cover 12. When the guide rib 2111 moves outward along the guide groove 121 to a preset limit expansion position, the limiting ring can block the guide rib 2111 from continuing to move outward, thereby limiting the maximum displacement of the floating body 211 when it expands outward and preventing the floating body 211 from detaching from the brush shaft 1.

[0070] In some embodiments, the outer periphery of the guide groove 121 is closed. This can be understood as the end of the guide groove 121 not extending to the outer periphery of the stop cover 12, and the outer periphery of the stop cover 12 having a certain distance reserved. The closed end wall at the end of the guide groove 121 constitutes the anti-detachment structure. When the guide rib 2111 moves outward along the guide groove 121 to a preset limit expansion position, the closed end wall can block the guide rib 2111 from continuing, thereby limiting the maximum displacement of the floating body 211 when it expands outward and preventing the floating body 211 from detaching from the brush shaft 1.

[0071] Example 2

[0072] This embodiment provides a cleaning device, including a body and a roller brush structure as described in any of the embodiments of the first embodiment above, which is mounted on the body.

[0073] Because this cleaning device includes the roller brush structure described in Embodiment 1, it reduces hair entanglement, provides better cleaning results, and has a longer service life.

[0074] Specifically, the cleaning device can be a robotic vacuum cleaner or a traditional vacuum cleaner. Preferably, the cleaning device is a robotic vacuum cleaner.

[0075] In this embodiment, one end of the brush shaft 1 is connected to the drive mechanism, which can be fixed on the machine body and is used to drive the roller brush structure to rotate.

[0076] When deep cleaning is required, the drive mechanism drives the roller brush structure to rotate at high speed. Due to the increase in centrifugal force, the floating body 211 of the brush body 2 overcomes the deformation elastic force of the elastic element 212 and expands outward along the guide groove 121 under the action of centrifugal force, thereby increasing the outer diameter of the brush body 2 and increasing the entanglement radius of hair and other filamentous materials on the roller brush. Some short hairs cannot be entangled on the brush body 2 with a larger entanglement radius because they are not long enough, thus effectively suppressing the entanglement of hair under the high speed of the roller brush. In addition, the brush body with an expanded outer diameter can also play the role of peeling off hair.

[0077] After deep cleaning is completed, the drive mechanism controls the roller brush structure to reduce the rotation speed, and the roller brush structure switches to a low speed or stationary state. The floating body 211, which has reduced or lost the centrifugal force, contracts and resets under the action of the elastic force of the elastic element 212, tightly wrapping around the brush shaft 1 of the roller brush.

[0078] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A rolling brush structure, characterized by, The application relates to a rolling brush structure. The rolling brush structure comprises a brush shaft (1) and a brush body (2) sleeved on the brush shaft (1). When the brush body (2) rotates at a high speed, the floating bodies (211) can move outward along the radial direction of the brush shaft (1) under the action of centrifugal force, so that the outer diameter of the brush body (2) is increased. The brush shaft (1) is provided with a guide structure suitable for guiding the movement of the floating bodies (211) and limiting the floating bodies (211) in the circumferential direction. The brush shaft (1) comprises a brush shaft body (11) and a stop cover (12) fixedly arranged at both ends of the brush shaft body (11). The guide structure comprises a guide groove (121) arranged on the stop cover (12), and the guide groove (121) extends along the radial direction of the brush shaft body (11). The two ends of the floating body (211) are respectively provided with a guide rib (2111) in sliding fit with the guide groove (121), and the floating body (211) is guided to move along the radial direction of the brush shaft (1) through the sliding fit of the guide rib (2111) and the guide groove (121). The floating body (211) is in an arc structure, and when the floating body (211) is in a contraction state, a plurality of floating bodies (211) can be folded to form a whole circle.

2. The roll brush structure of claim 1, wherein, The two adjacent floating bodies (211) are connected through elastic members (212).

3. The roll brush structure of claim 1, wherein, The elastic member (212) is a soft rubber film connected between the two adjacent floating bodies (211), and a plurality of soft rubber films are used to connect the plurality of floating bodies (211) integrally.

4. The roll brush structure of claim 3, wherein, The brush body (2) further comprises bristles (22) and / or rubber strips fixedly arranged on the outer surface of the floating body (211).

5. The roll brush structure according to any one of claims 1-4, wherein, The brush body (2) further comprises bristles (22) fixedly arranged on the brush shaft (1), and the bristles (22) have a plurality of bundles.

6. The roll brush structure of any one of claims 1-4, wherein, The floating body (211) is provided with through holes for the bristles (22) to extend out, and a plurality of through holes are arranged in one-to-one correspondence with the plurality of bundles of bristles (22). The stop cover (12) is provided with anti-disengagement structures for preventing the floating bodies (211) from disengaging from the brush shaft (1) during the outward expansion process, and the anti-disengagement structures are blocked on the outer circumferential side of the guide groove (121).

7. The roll brush structure of claim 1, wherein, The application further relates to an aircraft body and a rolling brush structure mounted to the aircraft body.

8. A cleaning device characterized by ​

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