Rolling brush assembly and floor brush having same

Abstract

The application discloses a kind of roll brush assemblies and the floor brush with it, the roll brush assembly, including: roll brush body, inside hollow to form hollow cavity, the inner wall of hollow cavity is fixed with adjusting structure, and at least one end of roll brush body is equipped with opening, opening is communicated with hollow cavity;Roll shaft structure, be in the hollow cavity of roll brush body, roll shaft structure and adjusting structure are connected in motion along the circumference of roll brush body;And drive assembly, including output shaft, output shaft from opening enters into hollow cavity, and output shaft is fixedly connected with roll shaft structure;Drive assembly drives output shaft and roll shaft structure rotate around the axial rotation of output shaft, roll shaft structure drives adjusting structure and roll brush body rotate;Wherein, adjusting structure and roll shaft structure are movably connected in the radial direction of roll brush body, when roll brush body rotates, the axis of roll brush body can be offset relative to the axis of output shaft.

Description

Technical Field

[0001] This invention belongs to the field of cleaning equipment technology, specifically relating to a roller brush assembly and a floor brush having the same. Background Technology

[0002] As people's living standards continue to improve, they are paying more and more attention to environmental cleanliness. Cleaning equipment can assist or replace humans in cleaning tasks. For example, floor scrubbers can clean floors, and window cleaners can clean windows.

[0003] Existing cleaning equipment's roller brush assembly suffers from poor adhesion to the surface when cleaning. For example, while some areas may appear to be on the same plane, differences in height between different areas mean that lower areas may not be cleaned by the roller brush assembly. Furthermore, uneven surfaces can lead to water residue. Therefore, it is necessary to improve the existing technology to overcome these shortcomings. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a roller brush assembly with good cleaning effect and a floor brush having the same.

[0005] To solve the above-mentioned technical problems, the present invention provides a roller brush assembly, comprising: a roller brush body, the interior of which is hollow to form a hollow cavity, an adjustment structure fixed on the inner wall of the hollow cavity, and an opening at at least one end of the roller brush body communicating with the hollow cavity; a roller structure disposed within the hollow cavity of the roller brush body, the roller structure and the adjustment structure being drively connected along the circumference of the roller brush body; and a drive assembly including an output shaft extending from the opening into the hollow cavity, and the output shaft being fixedly connected to the roller structure; the drive assembly drives the output shaft and the roller structure to rotate around the axial direction of the output shaft, and the roller structure drives the adjustment structure and the roller brush body to rotate; wherein, the adjustment structure and the roller structure are movably connected in the radial direction of the roller brush body, and when the roller brush body rotates, the axis of the roller brush body can be offset relative to the axis of the output shaft.

[0006] Preferably, the roller brush assembly further includes an elastic support member located within the hollow cavity and circumferentially disposed around the output shaft.

[0007] Preferably, the outer periphery of the elastic support abuts against the inner wall of the hollow cavity, and the inner periphery of the elastic support is connected to the output shaft.

[0008] Preferably, the inner circumference of the elastic support member is connected to the output shaft via a first bearing.

[0009] Preferably, the distance between the elastic support and the opening is less than the distance between the elastic support and the center of the roller brush body; or, the elastic support is located at the opening of the roller brush body.

[0010] Preferably, the drive assembly further includes a sleeve located at least partially within the hollow cavity, the output shaft passing through the sleeve, the roller structure located on the sleeve away from the opening, and a second bearing provided between the outer peripheral surface of the output shaft and the inner wall of the sleeve;

[0011] The elastic support is sleeved on the outer circumferential surface of the sleeve, and the outer ring of the elastic support is in contact with the cavity wall of the hollow cavity.

[0012] Preferably, the outer circumferential surface of the sleeve is provided with a groove, the groove is circumferentially arranged around the outer circumferential surface of the sleeve along the circumferential direction of the output shaft, and the elastic support is engaged in the groove; or, the elastic support is disposed on the outer circumferential surface of the sleeve through a third bearing.

[0013] Preferably, the roller structure has a first mating part, and the adjusting structure has a second mating part that mates with the first mating part;

[0014] The first mating part and the second mating part are slidably connected. When the second mating part slides relative to the first mating part, the displacement component of the sliding displacement of the second mating part in the radial direction along the brush body is greater than zero.

[0015] Preferably, the first mating part is a surface protruding from the roller structure, and the second mating part is a surface recessed from the adjustment structure; or, the first mating part is a surface recessed from the roller structure, and the second mating part is a surface protruding from the adjustment structure.

[0016] Preferably, the first mating part and the second mating part are clearance-fitted; or, one of the first mating parts and the second mating part has an arc-shaped cross-section in the axial direction of the output shaft, and the other has at least one of an arc shape, a broken line, and a cone shape in the axial direction of the output shaft.

[0017] Preferably, a limiting structure is further provided between the roller structure and the adjusting structure to limit the offset range of the brush body relative to the roller structure;

[0018] The limiting structure includes multiple guide grooves and multiple guide ribs that mate with the guide grooves. One of the guide grooves and the guide ribs is located on the first mating portion, and the other is located on the second mating portion. The length of the guide groove is greater than the length of the guide rib. Alternatively...

[0019] The limiting structure includes a second mating part and a limiting part disposed on the roller structure. The adjusting structure is provided with a groove, the second mating part is the groove wall of the groove, the limiting part is connected to the first mating part, and the limiting part is distributed further away from the second mating part than the first mating part. In the direction from the adjusting structure to the roller structure, the outer diameter of the first mating part gradually increases and the outer diameter of the limiting part gradually decreases.

[0020] The adjustment structure has a limiting state when the second mating part abuts against the limiting part, and an adjustment state when the second mating part and the limiting part are spaced apart. The adjustment structure switches between the limiting state and the adjustment state when subjected to external force.

[0021] Preferably, an axial connection assembly for axially connecting the roller structure and the adjustment structure is provided between the roller structure and the adjustment structure.

[0022] Preferably, the roller structure and the adjustment structure are located at the middle of the roller brush body in the axial direction.

[0023] Preferably, the drive assembly further includes a drive motor for driving the output shaft to rotate, the drive motor being connected to the output shaft in a transmission manner;

[0024] The drive motor is located on the outside of the brush body; or the drive motor is located inside the hollow cavity of the brush body.

[0025] The present invention also provides a floor brush, including the roller brush assembly as described above.

[0026] The technical solution provided by this invention has the following advantages:

[0027] 1. Through the cooperation between the roller structure and the adjustment structure, the roller brush body can achieve 360° offset in its radial direction. When the roller brush body rotates, the axis of the roller brush body can be offset relative to the axis of the output shaft.

[0028] Specifically, when the roller brush is suspended in the air, it tends to move downwards under its own weight; when the roller brush touches the ground, it can maintain a parallel state with the ground under the support of the ground. In other words, the roller brush can adjust its position and posture to cooperate with the ground, which can effectively solve the problem of water stains on the ground and has the advantage of good cleaning effect.

[0029] 2. The roller structure and adjustment structure are located in the middle of the roller brush body in the axial direction. This effectively ensures that the center of gravity of the roller brush body does not shift during use, so that the roller brush body is parallel to the ground during cleaning. This allows the roller brush body to make full contact with the ground during cleaning, improving the cleaning effect and giving it the advantage of good cleaning effect. Attached Figure Description

[0030] Figure 1 A three-dimensional structural schematic diagram of the roller brush assembly provided by the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;

[0032] Figure 3 This is a schematic diagram showing the relationship between the roller brush and the ground when there is a height difference between the ground and the ground.

[0033] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure;

[0034] Figure 5 This is a schematic diagram showing the cooperation relationship between the roller structure and the adjustment structure in this invention;

[0035] Figure 6 for Figure 5 Enlarged structural diagram of region A in the middle;

[0036] Figure 7 This is a schematic diagram when the cross-sections of both the first mating part and the second mating part are arc-shaped.

[0037] Figure 8 A schematic diagram showing that the cross-section of the second mating part is arc-shaped and the cross-section of the first mating part is a broken line;

[0038] Figure 9 This is a schematic diagram of the internal structure of the roller brush body in this invention;

[0039] Figure 10 This is a schematic diagram of the roller structure in this invention;

[0040] Figure 11 This is a schematic diagram showing the positional relationship between the drive motor, the reduction unit, and the sleeve in this invention;

[0041] Figure 12This is a schematic diagram of the structure of the floor brush provided by the present invention. Detailed Implementation

[0042] 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. The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0044] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0045] Existing cleaning equipment with roller brushes, such as floor scrubbers, often encounters issues when cleaning floors. The main reason for this is unevenness; the areas to be cleaned are not on the same plane. Specifically, while some areas may appear to be on the same plane to the naked eye, there are actually height differences between different areas. The lower areas cannot be properly cleaned by the roller brush. Furthermore, uneven surfaces can also leave water residue.

[0046] In view of this, the present invention provides a roller brush assembly, which, in an illustrative scenario, is applied to the floor brush of a floor scrubber. It is worth noting that the application of the roller brush assembly to the floor brush of a floor scrubber in the above example is only one feasible application scenario. In other feasible and not explicitly excluded scenarios, the roller brush assembly can also be applied to window cleaning robots, etc. The scope of protection of the embodiments of the present invention is not limited thereto.

[0047] Please see Figures 1 to 4As shown, the roller brush assembly includes: a roller brush body 100, a roller structure 120, an adjusting structure 130, and a drive assembly 300. The roller brush body 100 is hollow to form a hollow cavity, and at least one end of the roller brush body 100 has an opening communicating with the hollow cavity. The roller structure 120 cooperates with the adjusting structure 130; the roller structure 120 is disposed within the hollow cavity of the roller brush body 100, and the adjusting structure 130 is fixed to the inner wall of the hollow cavity. An axial connection assembly 140 is provided between the roller structure 120 and the adjusting structure 130 to connect them axially, thereby achieving an axial connection between the roller structure 120 and the adjusting structure 130. The term "axial" refers to the axial direction of the roller brush body 100.

[0048] In this embodiment, the roller structure 120 and the adjustment structure 130 are located in the middle of the roller brush body 100 in the axial direction. This effectively ensures that the center of gravity of the roller brush body 100 does not shift during use, so that the roller brush body 100 is parallel to the ground during cleaning, thereby ensuring that the roller brush body 100 makes full contact with the ground during cleaning and improving the cleaning effect.

[0049] The drive assembly 300 includes an output shaft 320 and a drive motor 311 for driving the output shaft 320 to rotate. The drive motor 311 is connected to the output shaft 320 to drive the output shaft 320 to rotate. The output shaft 320 extends from the opening of the brush body 100 into the hollow cavity of the brush body 100, and the output shaft 320 is fixedly connected to the roller structure 120.

[0050] In this embodiment, the drive motor 311 of the drive assembly 300 drives the output shaft 320 and the roller structure 120 to rotate around the axial direction of the output shaft 320. The roller structure 120 drives the adjustment structure 130 and the brush body 100 to rotate. That is, the roller structure 120 and the adjustment structure 130 are connected in a transmission along the circumferential direction of the brush body 100.

[0051] After the roller structure 120 and the adjusting structure 130 are connected via the axial connecting assembly 140, the adjusting structure 130 and the roller structure 120 are movably connected in the radial direction of the brush body 100. When the brush body 100 rotates, the axis of the brush body 100 can be offset relative to the axis of the output shaft 320. The aforementioned "movable connection between the adjusting structure 130 and the roller structure 120 in the radial direction of the brush body 100" means that the adjusting structure 130 has a degree of freedom of movement relative to the roller structure 120 in the radial direction of the brush body 100, so that the brush body 100 can move in its radial direction, thereby realizing the adjustment of the attitude of the brush body 100.

[0052] Specifically, when the roller brush 100 is suspended in the air, it tends to shift downwards under its own weight; when the roller brush 100 is on the ground, it can maintain a parallel state with the ground under the support of the ground. Therefore, when cleaning the ground, the roller brush 100 can adjust its posture in the radial direction.

[0053] When the surface to be cleaned is a floor with a height difference, please refer to [the relevant documentation]. Figure 3 As shown, the area of ​​the roller brush 100 located at a lower elevation shifts downwards under the influence of gravity, while the area of ​​the roller brush 100 located at a higher elevation is forced to shift upwards, causing the X-axis of the roller brush 100 to shift relative to the Y-axis of the output shaft 320. It is worth noting that during the self-adjustment process of the roller brush 100, the bristles or brush cloth on the outer circumference of the roller brush 100 remain in contact with the ground; however, the amount of interference between the bristles or brush cloth on the outer circumference of the roller brush 100 and the ground varies.

[0054] Furthermore, during the cleaning process of the roller brush 100, since the roller brush 100 is rotatably mounted on the floor brush body (not shown in the figure), and the floor brush body has a roller brush cavity for mounting the roller brush 100, some large particles on the ground may become stuck between the roller brush 100 and the floor brush body. In this embodiment, when large particles become stuck between the roller brush 100 and the floor brush body, since the roller brush 100 has a degree of freedom of movement in its radial direction, the large particles can be easily detached from between the roller brush 100 and the floor brush body.

[0055] Conversely, if the roller brush is a traditional type that cannot be adjusted in its radial direction, large particles are difficult to detach from the roller brush body and the brush body. When large particles are stuck between the roller brush body and the brush body for a long time, the roller brush body is easily deformed, which makes the scraper strips on the brush body (not shown in the figure) unable to scrape water evenly and effectively, and makes the contact between the roller brush body and the ground uneven, resulting in water stains remaining on the ground.

[0056] In this embodiment, after the axis X of the roller brush body 100 is offset relative to the axis Y of the output shaft 320, an angle is formed between the axis X and the axis Y, and the value of the angle is in the range of 0° to 2°.

[0057] For example, the angle between axis X and axis Y can be 0°, 0.5°, 1.5°, 2°, etc., or it can be an increase of 0.1°, 0.2°, 0.3°, 0.4°, 0.5°, 0.6°, 0.7°, 0.8°, 0.9°, 1° between 0° and 2°. These are merely examples to illustrate the point, and it can be assumed that all possible combinations of the values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0058] In this embodiment, in order to enable the roller brush body 100 to move relatively smoothly in its radial direction, the roller brush assembly further includes an elastic support member 340, which is used to limit the movement of the roller brush body 100 in the radial direction. The elastic support member 340 is located within the hollow cavity and is arranged around the outer periphery of the output shaft 320.

[0059] The elastic support 340 is annular and made of a flexible material, such as rubber or silicone. The outer periphery of the elastic support 340 abuts against the inner wall of the hollow cavity, and the inner periphery of the elastic support 340 is connected to the output shaft 320. When the roller brush 100 adjusts its posture under the action of the roller structure 120 and the adjustment structure 130, the roller brush 100 can achieve a smooth offset in its radial direction due to the presence of the elastic support 340.

[0060] In this embodiment, the inner circumference of the elastic support 340 is connected to the output shaft 320 in two ways: First, the inner circumference of the elastic support 340 is directly connected to the output shaft 320, which can be understood as the elastic support 340 being directly fitted onto the outer circumferential surface of the output shaft 320. Second, the inner circumference of the elastic support 340 is connected to the output shaft 320 via a first bearing (not shown in the figure). In the above case, the outer ring of the first bearing abuts against the inner circumference of the elastic support 340, and the inner ring of the first bearing abuts against the outer circumferential surface of the output shaft 320. Through the aforementioned first bearing, the elastic support 340 can rotate with the brush body 100, thus preventing wear on the elastic support 340. Conversely, if the first bearing is not provided, friction will occur between the brush body 100 and the elastic support 340 during rotation, causing wear on the elastic support 340.

[0061] Regarding the location of the elastic support 340, in this embodiment, the elastic support 340 is distributed on one side of the hollow cavity of the brush body 100. In one embodiment, the distance between the elastic support 340 and the opening of the brush body 100 is less than the distance between the elastic support 340 and the center of the brush body 100. In another embodiment, the elastic support 340 is located at the opening of the brush body 100. When the elastic support 340 is located at the opening of the brush body 100, the elastic support 340 also has the function of sealing the opening.

[0062] To prevent external environmental factors from affecting the transmission performance of the output shaft 320 and to protect the output shaft 320, please refer to the following: Figure 2 and combined Figure 11 As shown, the drive assembly 300 also includes a sleeve 330 located at least partially within the hollow cavity of the brush body 100, and an output shaft 320 passing through the sleeve 330. The roller structure 120 is located on the open side of the sleeve 330 away from the brush body 100. In this embodiment, the brush body 100 has a structure with one open end and the other closed, and the sleeve 330 extends into the hollow cavity of the brush body 100 through the open end.

[0063] Further, please refer to Figure 4 As shown, a second bearing 350 is provided between the outer peripheral surface of the output shaft 320 and the inner wall of the sleeve 330. An elastic support 340 is sleeved on the outer peripheral surface of the sleeve 330, and the outer ring of the elastic support 340 contacts the cavity wall of the hollow cavity of the brush body 100.

[0064] To achieve the positioning of the elastic support 340 on the sleeve 330, in one embodiment, please refer to [reference needed]. Figure 11 As shown, a groove 331 is provided on the outer peripheral surface of the sleeve 330. The groove 331 is arranged around the outer peripheral surface of the sleeve 330 along the circumferential direction of the output shaft 320, and the elastic support 340 is engaged in the groove 331.

[0065] In another embodiment, the elastic support 340 is disposed on the outer circumferential surface of the sleeve 330 via a third bearing (not shown in the figure). The inner ring of the third bearing abuts against the outer circumferential surface of the sleeve 330, and the outer ring of the third bearing abuts against the inner ring of the elastic support 340. The third bearing, besides positioning the elastic support 340 on the sleeve 330, also allows the elastic support 340 to rotate with the brush body 100, thereby preventing wear on the elastic support 340. It is worth noting that the third bearing and the aforementioned first bearing are bearings involved in different embodiments. To distinguish the bearings involved in different embodiments, the bearings in different embodiments are defined as the first bearing and the third bearing, respectively.

[0066] Regarding the location of the drive motor 311, the drive motor 311 can be located on the outside of the brush body 100 or inside the hollow cavity of the brush body 100. Preferably, the drive motor 311 is located on the outside of the brush body 100.

[0067] Please see Figure 4 and combined Figure 11As shown, the drive motor 311 is connected to the output shaft 320 via a reduction unit 312. The drive motor 311 and the reduction unit 312 constitute the drive body 310 of the drive assembly 300. In this embodiment, the sleeve 330 is fixedly connected to the drive body 310. Preferably, the sleeve 330 is integrally formed with the housing of the reduction unit 312, or is fixedly connected to the housing of the reduction unit 312.

[0068] When the drive motor 311 operates, the reduction unit 312 reduces the speed, enabling the output shaft 320 to rotate at a preset speed, thereby causing the brush body 100 to rotate at the preset speed. Specifically, since the output shaft 320 is fixedly connected to the roller structure 120, the roller structure 120 and the output shaft 320 can rotate synchronously; that is, when the output shaft 320 rotates, the roller structure 120 rotates synchronously with the output shaft 320. The adjustment structure 130 achieves synchronous rotation with the roller structure 120 through the axial connection assembly 140, thereby realizing the synchronous rotation of the brush body 100 and the output shaft 320.

[0069] In order to achieve the adjustment of the posture of the roller brush body 100, in this embodiment, the roller structure 120 has a first mating part 1211, and the adjustment structure 130 has a second mating part 131 that mates with the first mating part 1211. The first mating part 1211 and the second mating part 131 are slidably connected. When the second mating part 131 slides relative to the first mating part 1211, the displacement component of the second mating part 131 along the radial direction of the roller brush body 100 is greater than zero.

[0070] Regarding the first mating part 1211 and the second mating part 131, in one case, please refer to Figure 9 and Figure 10 As shown, the first mating part 1211 is a surface protruding from the roller structure 120, and the second mating part 131 is a surface recessed from the adjustment structure 130; in another case, the first mating part 1211 is a surface recessed from the roller structure 120, and the second mating part 131 is a surface protruding from the adjustment structure 130.

[0071] Furthermore, the first mating part 1211 and the second mating part 131 are clearance-fitted; alternatively, one of the first mating parts 1211 and the second mating part 131 has an arc-shaped cross-section in the axial direction of the output shaft 320, while the other has at least one of an arc shape, a broken line, or a cone shape in the axial direction of the output shaft 320.

[0072] Appendix Figure 7 This is a schematic diagram showing that both the second mating part 131 and the first mating part 1211 have an arc-shaped cross-section. In this case, the second mating part 131 and the first mating part 1211 are in surface-to-surface contact. (See attached diagram.) Figure 8This is a schematic diagram showing that the cross-section of the second mating part 131 is arc-shaped and the cross-section of the first mating part 1211 is a broken line. In this case, the second mating part 131 and the first mating part 1211 are in surface-to-line contact.

[0073] In this embodiment, please continue to refer to Figure 9 and Figure 10 As shown, preferably, the first mating part 1211 is an arc-shaped surface protruding from the roller structure 120, and the second mating part 131 is an arc-shaped surface recessed from the adjusting structure 130. That is, the cross-sections of the first mating part 1211 and the second mating part 131 are both arc-shaped.

[0074] For further information, please refer to [link / reference]. Figure 10 As shown, the roller structure 120 includes a roller 121 fixedly connected to the output shaft 320. The roller 121 has the aforementioned first mating portion 1211 distributed near the adjustment structure 130. The first mating portion 1211 can be a complete sphere or a partially spherical shape. In this embodiment, the first mating portion 1211 is partially spherical. The adjustment structure 130 is a ball-and-socket joint that mates with the first mating portion 1211, and at least part of the inner wall of the adjustment structure 130 is the aforementioned second mating portion 131 that is in surface contact with the first mating portion 1211.

[0075] During operation, the roller brush 100 can rotate synchronously with the roller structure 120, and under the action of an external force, the axis X of the roller brush 100 can be offset relative to the axis Y of the output shaft 320. The aforementioned "external force" can be the force exerted on the roller brush 100 by uneven ground, the force exerted on the roller brush 100 by large particles of dirt, or the force applied to the roller brush 100 by the user.

[0076] In this embodiment, through the cooperation between the roller structure 120 and the adjustment structure 130, the roller brush body 100 can achieve position adjustment in its radial direction. When the roller brush body 100 rotates, it can adjust its own posture to make the roller brush body 100 fit the uneven ground, which is conducive to cleaning the ground. When encountering large particles stuck between the roller brush body 100 and the brush body, the roller brush body 100 adjusts its own posture to make the large particles detach from the roller brush body 100 and the brush body, thereby solving the problem of water stains remaining on the ground.

[0077] In this embodiment, a limiting structure is also provided between the roller structure 120 and the adjusting structure 130 to limit the offset range of the brush body 100 relative to the roller structure 120.

[0078] For the first type of limit structure setting, please continue reading. Figure 9 and Figure 10As shown, the limiting structure includes multiple guide grooves 1214 and multiple guide ribs 132 that mate with the guide grooves 1214. One of the guide grooves 1214 and the guide ribs 132 is provided on the first mating part 1211, and the other is provided on the second mating part 131. In this embodiment, the first mating part 1211 is provided with the aforementioned guide grooves 1214, and the second mating part 131 is provided with the aforementioned guide ribs 132. It is worth noting that the length of the guide grooves 1214 is greater than the length of the guide ribs 132. Therefore, the guide ribs 132 can slide within the guide grooves 1214, thereby limiting the sliding range of the guide ribs 132 by the guide grooves 1214, and thus limiting the offset range of the brush body 100 relative to the roller structure 120.

[0079] Regarding the number of guide grooves 1214 and guide ribs 132, each guide groove 1214 and guide rib 132 is provided in a one-to-one correspondence. The number of guide grooves 1214 and guide ribs 132 affects the offset direction of the brush body 100. Understandably, the more guide grooves 1214 and guide ribs 132 there are, the wider the offset direction of the brush body 100. In this embodiment, along the circumferential direction of the brush body 100, at least four guide grooves 1214 are evenly distributed on the first mating part 1211, and at least four guide ribs 132 are evenly distributed on the second mating part 131.

[0080] Preferably, the number of guide grooves 1214 and guide ribs 132 is set to four. The four guide grooves 1214 or the four guide ribs 132 respectively define the four offset directions of up, down, forward, and backward. That is, the brush body 100 can be offset relative to the roller structure 120 in the up, down, forward, and backward directions. Of course, the number of guide grooves 1214 and guide ribs 132 can also be five or six, which will not be elaborated here.

[0081] For the second configuration of the limit structure, please refer to [link / reference]. Figure 5 and Figure 10 As shown, the limiting structure includes a second mating part 131 and a limiting part 1212 disposed on the roller 121. The adjusting structure 130 has a groove, the second mating part 131 is the groove wall of the groove, and the limiting part 1212 is connected to the first mating part 1211, with the limiting part 1212 distributed further away from the second mating part 131 than the first mating part 1211. The first mating part 1211 and the limiting part 1212 are located on the same spherical surface, and in the direction from the adjusting structure 130 to the roller structure 120, the outer diameter of the first mating part 1211 gradually increases, while the outer diameter of the limiting part 1212 gradually decreases.

[0082] Specifically, the adjustment structure 130 has a limiting state and an adjustment state. In the limiting state, the second mating part 131 abuts against the limiting part 1212; in the adjustment state, please refer to... Figure 6 As shown, the second mating part 131 and the limiting part 1212 are spaced apart, meaning there is a gap between the second mating part 131 and the limiting part 1212. The adjusting structure 130 switches between the limiting state and the adjusting state under the action of external force.

[0083] In summary, the offset limit of the brush body 100 can be achieved through the two limit structures described above, which have the advantage of good offset limit effect.

[0084] In this embodiment, the end of the roller brush body 100 near the drive assembly 300 is defined as the first end, and the end of the roller brush body 100 away from the drive assembly 300 is defined as the second end. The first end is open, and the second end is closed. The term "closed" is relative to "open." In this embodiment, the second end of the roller brush body 100 is provided with an end cap 110, and bristles are embedded on the outer circumferential surface of the end cap 110. This allows for cleaning of wall edges (such as baseboards), thereby achieving edge cleaning.

[0085] Example 2

[0086] This invention also provides a floor brush; please refer to [link / reference]. Figure 12 As shown, the floor brush includes a floor brush body 200 and a roller brush assembly disposed on the floor brush body 200. The roller brush assembly is the roller brush assembly described in Embodiment 1.

[0087] In one application scenario, the floor brush is a floor scrubber brush. It is worth noting that the floor brush described in the above example is a floor scrubber brush, which is only one possible application scenario. In other feasible and not explicitly excluded scenarios, the floor brush can also be applied to other cleaning equipment. The scope of protection of the embodiments of the present invention is not limited thereto.

[0088] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art can make other variations or modifications without creative effort, and all such variations or modifications should fall within the scope of protection of the present invention.

Claims

1. A roller brush assembly, characterized in that, include: A roller brush body has a hollow interior to form a hollow cavity. An adjustment structure is fixed on the inner wall of the hollow cavity, and at least one end of the roller brush body has an opening that communicates with the hollow cavity. A roller structure is disposed in the hollow cavity of the brush body, and the roller structure is connected to the adjustment structure in a transmission direction along the circumference of the brush body. as well as A drive assembly includes an output shaft that extends from the opening into the hollow cavity and is fixedly connected to the roller structure. The drive assembly drives the output shaft and the roller structure to rotate about the axial direction of the output shaft, and the roller structure drives the adjustment structure and the brush body to rotate. The adjustment structure and the roller structure are movably connected in the radial direction of the brush body. When the brush body rotates, the axis of the brush body can be offset relative to the axis of the output shaft.

2. The roller brush assembly as described in claim 1, characterized in that, The roller brush assembly also includes an elastic support member located inside the hollow cavity and surrounding the outer periphery of the output shaft.

3. The roller brush assembly as described in claim 2, characterized in that, The outer periphery of the elastic support abuts against the inner wall of the hollow cavity, and the inner periphery of the elastic support is connected to the output shaft.

4. The roller brush assembly as described in claim 2, characterized in that, The inner circumference of the elastic support member is connected to the output shaft via a first bearing.

5. The roller brush assembly as described in claim 2, characterized in that, The distance between the elastic support and the opening is less than the distance between the elastic support and the center of the roller brush body; or, the elastic support is located at the opening of the roller brush body.

6. The roller brush assembly as described in claim 2, characterized in that, The drive assembly further includes a sleeve located at least partially within the hollow cavity, the output shaft passing through the sleeve, the roller structure located on the sleeve away from the opening, and a second bearing provided between the outer peripheral surface of the output shaft and the inner wall of the sleeve. The elastic support is sleeved on the outer circumferential surface of the sleeve, and the outer ring of the elastic support is in contact with the cavity wall of the hollow cavity.

7. The roller brush assembly as described in claim 6, characterized in that, The sleeve has a groove on its outer circumferential surface, the groove being arranged circumferentially around the outer circumferential surface of the sleeve along the output shaft, and the elastic support is engaged with the groove; or... The elastic support is mounted on the outer circumferential surface of the sleeve via a third bearing.

8. The roller brush assembly as claimed in claim 1, characterized in that, The roller structure has a first mating part, and the adjusting structure has a second mating part that mates with the first mating part; The first mating part and the second mating part are slidably connected. When the second mating part slides relative to the first mating part, the displacement component of the sliding displacement of the second mating part in the radial direction along the brush body is greater than zero.

9. The roller brush assembly as claimed in claim 8, characterized in that, The first mating part is a surface protruding from the roller structure, and the second mating part is a surface recessed from the adjustment structure; or, the first mating part is a surface recessed from the roller structure, and the second mating part is a surface protruding from the adjustment structure.

10. The roller brush assembly as claimed in claim 8 or 9, characterized in that, The first mating part and the second mating part are clearance-fitted; or, one of the first mating parts and the second mating part has an arc-shaped cross-section in the axial direction of the output shaft, and the other has at least one of an arc shape, a broken line, and a cone shape in the axial direction of the output shaft.

11. The roller brush assembly as claimed in claim 8, characterized in that, A limiting structure for limiting the offset range of the brush body relative to the roller structure is also provided between the roller structure and the adjusting structure; The limiting structure includes multiple guide grooves and multiple guide ribs that mate with the guide grooves. One of the guide grooves and the guide ribs is located on the first mating portion, and the other is located on the second mating portion. The length of the guide groove is greater than the length of the guide rib. Alternatively... The limiting structure includes a second mating part and a limiting part disposed on the roller structure. The adjusting structure is provided with a groove, the second mating part is the groove wall of the groove, the limiting part is connected to the first mating part, and the limiting part is distributed further away from the second mating part than the first mating part. In the direction from the adjusting structure to the roller structure, the outer diameter of the first mating part gradually increases and the outer diameter of the limiting part gradually decreases. The adjustment structure has a limiting state when the second mating part abuts against the limiting part, and an adjustment state when the second mating part and the limiting part are spaced apart. The adjustment structure switches between the limiting state and the adjustment state when subjected to external force.

12. The roller brush assembly as claimed in claim 1, characterized in that, An axial connection assembly is provided between the roller structure and the adjustment structure for axially connecting the roller structure and the adjustment structure.

13. The roller brush assembly as claimed in claim 1, characterized in that, The roller structure and the adjustment structure are located at the middle of the roller brush body in the axial direction.

14. The roller brush assembly as claimed in claim 1, characterized in that, The drive assembly also includes a drive motor for driving the output shaft to rotate, the drive motor being connected to the output shaft in a transmission manner; The drive motor is located on the outside of the brush body; or the drive motor is located inside the hollow cavity of the brush body.

15. A floor brush, characterized in that, Includes the roller brush assembly as described in any one of claims 1 to 14.

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