Rolling brush assembly and cleaning equipment

Abstract

The invention discloses a rolling brush assembly and cleaning equipment, and relates to the technical field of life electric appliances, and the rolling brush assembly comprises a driving mechanism, a rolling brush and a limiting frame; the rolling brush is in transmission connection with the driving mechanism, the driving mechanism drives the rolling brush to rotate, and the rolling brush comprises a roller and a brush arranged on the peripheral side of the roller; one end part of the roller is inserted into the limiting frame, and the limiting frame is used for limiting the rolling brush to move in an up-and-down fixed-width range; the length of one side edge of the roller is defined as r, the point where the roller makes contact with one inner side wall of the limiting frame during rotation is a contact point, and the distance L between the contact point and the bottom edge of the limiting frame is 0-r. According to the technical scheme, the problem that large-particle garbage cannot be cleaned can be solved.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a roller brush assembly and cleaning equipment. Background Technology

[0002] With the improvement of living standards, various time-saving and labor-saving cleaning equipment (such as robot vacuum cleaners, robot mops, floor scrubbers, etc.) are gradually being widely used.

[0003] In related technologies, the roller brush of the cleaning equipment has an interference fit with the ground during rotation to transfer dirt (including garbage, dust, sewage, etc.) to the collection channel. However, the gap between the roller brush and the collection channel is fixed. When large particles of garbage appear on the ground, they will block the gap between the roller brush and the collection channel, making it impossible to clean the large particles of garbage. Summary of the Invention

[0004] The main objective of this invention is to provide a roller brush assembly and cleaning device that aims to solve the problem of being unable to clean large particles of debris.

[0005] To achieve the above objectives, the present invention provides a roller brush assembly, comprising:

[0006] Drive mechanism;

[0007] A roller brush is connected to the drive mechanism, which drives the roller brush to rotate. The roller brush includes a roller and bristles disposed on the outer periphery of the roller.

[0008] A limiting frame is provided, in which one end of the roller is inserted. The limiting frame is used to restrict the movement of the roller within a fixed vertical width range.

[0009] The side length of one side of the roller is defined as r. The point where the roller contacts the inner side wall of the limiting frame when it rotates is called the contact point. The distance L between the contact point and the bottom edge of the limiting frame is 0 to r.

[0010] In one embodiment, the limiting frame has a top edge and a bottom edge that are opposite each other, and the roller is always in contact with the top edge and the bottom edge to restrict the movement of the roller brush within a fixed vertical width range by means of the top edge and the bottom edge.

[0011] In one embodiment, when the limiting frame restricts the movement of the roller within a fixed vertical width range, the rotation center of the roller floats vertically, and the vertical floating range S of the rotation center of the roller is...

[0012]

[0013] In one embodiment, the roller has a Reuleaux triangle cross-section with a side length of r.

[0014] In one embodiment, the side length r of the Reuleaux triangle is 30mm to 40mm.

[0015] In one embodiment, the brush includes a first brush portion and a second brush portion. On the cross-section of the roller, the first brush portion is located at the three vertices of the Reuleaux triangle, and the second brush portion is located on the side of the Reuleaux triangle. The hardness of the first brush portion is greater than the hardness of the second brush portion.

[0016] In one embodiment, the roller brush is driven to the drive mechanism via a universal coupling.

[0017] In one embodiment, the limiting frame is connected to the driving mechanism via a bearing;

[0018] Alternatively, the limiting frame is used to be installed on the body of the cleaning equipment.

[0019] In one embodiment, the drive mechanism includes a motor and a transmission mechanism, wherein the motor drives the roller brush to rotate via the transmission mechanism.

[0020] To achieve the above objectives, the present invention also provides a cleaning device, comprising:

[0021] The main body is equipped with a cover and a sewage collection channel;

[0022] As described above, the roller brush assembly is disposed on the cover, and a dirt collection gap is formed between the roller brush and the dirt collection channel.

[0023] The technical solution of this invention uses a limiting frame to restrict the movement of the roller brush within a fixed vertical width range, ensuring that the roller brush remains in constant contact with the ground and thus guaranteeing a cleaning effect. Furthermore, as the roller brush rotates, the contact point between the roller and the inner wall of the limiting frame continuously changes, allowing the distance between this contact point and the bottom edge of the limiting frame to vary from 0 to r. When the roller brush assembly is applied to cleaning equipment, a dirt collection gap is formed between the roller brush and the dirt collection channel. As the drive mechanism drives the roller brush to rotate, the size of the gap between different points on the roller brush and the dirt collection channel changes. That is, the dirt collection gap continuously changes during the rotation of the roller brush. When encountering large particles, particles smaller than r are allowed to pass through the dirt collection gap into the dirt collection channel. When the roller brush rotates to a position with a larger dirt collection gap, it can transfer large particles from the gap into the channel, thereby solving the problem of not being able to clean large particles. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a side view of an embodiment of the roller brush assembly provided by the present invention;

[0026] Figure 2 This is a schematic diagram of a structure of an embodiment of the roller brush assembly provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the roller and the limiting frame when the roller rotates to different positions in one embodiment of the roller brush assembly provided by the present invention;

[0028] Figure 4 A diagram showing the change of the rotation center of the roller during a fixed-width vertical movement in one embodiment of the roller gripper assembly provided by the present invention.

[0029] Figure 5 A cross-sectional view of an embodiment of the cleaning device provided by the present invention;

[0030] Figure 6 This is a partial cross-sectional view of an embodiment of the cleaning equipment provided by the present invention.

[0031] Explanation of icon numbers:

[0032] label name label name 1000 Cleaning equipment 32 bottom edge 100 Roller Brush Components a Contact point 10 Drive mechanism 40 bearings 20 roller brush 50 Universal coupling 21 roller 200 Ontology 22 brush 210 Cover 221 First Brush Department 220 sewage collection channel 222 Second brush section b Sewage collection gap 30 Limiting frame 230 Sludge collection box 31 Top edge 240 Fan

[0033] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0037] With the improvement of living standards, various time-saving and labor-saving cleaning equipment (such as robot vacuum cleaners, mopping machines, floor scrubbers, etc.) are gradually being widely used.

[0038] In related technologies, the roller brush of the cleaning equipment has an interference fit with the ground during rotation to transfer dirt (including garbage, dust, sewage, etc.) to the collection channel. However, the gap between the roller brush and the collection channel is fixed. When large particles of garbage appear on the ground, they will block the gap between the roller brush and the collection channel, making it impossible to clean the large particles of garbage.

[0039] Based on the above problems, this invention proposes a roller brush assembly 100 to solve the problem of not being able to clean large particles of debris. The roller brush assembly 100 is applied in a cleaning device 1000, which can be a sweeping robot, mopping robot, floor scrubber, or similar equipment. The cleaning device 1000 may also include a cover 210 and a dirt collection channel 220. The roller brush assembly 100 is disposed on the cover 210, and the dirt collection channel 220 is located on one side of the cover 210, with the dirt collection port of the dirt collection channel 220 facing the roller brush 20. A dirt collection gap b is formed between the dirt collection channel 220 and the roller brush 20. During operation, the roller brush 20 uses friction with the ground to transfer dirt from the ground through the dirt collection gap b to the dirt collection port. Finally, the negative pressure at the dirt collection port transfers the dirt into the dirt collection channel 220 for collection. The structure of the roller brush assembly 100 will be described below by way of an embodiment:

[0040] Please see Figures 1 to 4In one embodiment of the present invention, the roller brush assembly 100 includes a driving mechanism 10, a roller brush 20, and a limiting frame 30; the roller brush 20 is tractively connected to the driving mechanism 10, and the driving mechanism 10 drives the roller brush 20 to rotate. The roller brush 20 includes a roller 22 and a bristle 22 disposed on the outer periphery of the roller 22; one end of the roller 21 is inserted into the limiting frame 30, and the limiting frame 30 is used to restrict the movement of the roller brush 20 within a fixed vertical width range; the side length of one side of the roller is defined as r, and the point where the roller 21 contacts an inner sidewall of the limiting frame 30 when rotating is called contact point a, and the distance L between contact point a and the bottom edge 32 of the limiting frame is 0 to r.

[0041] Understandably, the drive mechanism 10 is used to mount on the body 200 of the cleaning device 1000 to support the roller brush 20. The roller brush 20 may be partially mounted inside the cover 210 of the body 200 and partially extend to the bottom of the cover 210 to make frictional contact with the ground when the roller brush 20 rotates.

[0042] In practical applications, the brush 22 can be connected to the outer periphery of the roller 22 by means of pressing, injection molding, bonding, adsorption, or binding to ensure the installation reliability of the brush 22 and the roller 22 and prevent the brush 22 from falling off the roller 22 during operation, thus affecting the cleaning effect.

[0043] The drive mechanism 10 can be a rotary motor, or a structure in which a motor and one or more gears work together (equivalent to a structure in which a motor and a reducer work together), or a structure in which a motor and a synchronous belt work together. As long as it can accurately control the rotation of the roller brush 20, no specific limitation is made here.

[0044] In one embodiment, when the drive mechanism 10 is a rotary motor, a mounting groove can be provided on the end face of the roller 22, and the output shaft of the rotary motor can be directly inserted into the mounting groove of the roller 22. When the rotary motor is working, it can directly drive the roller brush 20 to rotate through the output shaft.

[0045] In another embodiment, when the drive mechanism 10 is a structure in which a motor and one or more gears cooperate, a mounting shaft can be provided on the end face of the roller 22, and a mating tooth can be provided on the outer periphery of the mounting shaft. A gear is sleeved on the output shaft of the motor. The gear can directly mesh with the mating tooth of the mounting shaft, or it can mesh with the mating tooth of the mounting shaft through other gears. When the motor is working, it can drive the roller brush 20 to rotate through one or more gears.

[0046] In practical applications, the drive mechanism 10 can be located inside the roller 22 or outside the roller 22.

[0047] In one embodiment, the roller 22 may have a hollow cavity inside, so that the drive mechanism 10 is disposed in the hollow cavity of the roller 22. This makes use of the space inside the roller 22, making the overall structure more compact and reducing the size of the cleaning device 1000.

[0048] In another embodiment, the drive mechanism 10 can be located on one side of the roller 22, which makes it easier to install and maintain the drive mechanism 10.

[0049] It should be noted that the cross-section of roller 22 can be circular or Reuleaux triangle. When the cross-section of roller 22 is circular, the side length of one side of roller 22 is 1 / 3 of the circumference of the circle; when the cross-section of roller 22 is Reuleaux triangle, the side length of one side of roller 22 is the side length of the Reuleaux triangle.

[0050] It is understandable that, during the process of limiting the movement of the roller brush 20 within a fixed vertical width range, the rotation center of the roller 22 will fluctuate vertically. (Refer to the relevant documentation.) Figure 4 .

[0051] In practical applications, the cross-section of the limiting frame 30 can be rectangular, or it can be a polygon such as a pentagon or hexagon, as long as it can restrict the movement of the roller brush 20 within a fixed vertical width range.

[0052] It should be noted that the contact point a where the roller 22 contacts the inner side wall of the limiting frame 30 when rotating refers to the contact point a where the roller 22 contacts the right side of the limiting frame 30 when rotating, and the right side of the limiting frame 30 is the side closest to the sludge collection channel 220.

[0053] In summary, the technical solution of the present invention uses a limiting frame 30 to restrict the movement of the roller brush 20 within a fixed vertical width range, which can ensure that the roller brush 20 can always be in contact with the ground to ensure the cleaning effect on the ground; and when the roller brush 20 is rotating, the contact point a between the roller 22 and the inner side wall of the limiting frame 30 will continuously change, by making the distance between the contact point a and the bottom edge 32 of the limiting frame 30 change within the range of 0 to r. When the roller brush assembly 100 is applied to the cleaning equipment 1000, a dirt collection gap b is formed between the roller brush 20 and the dirt collection channel 220. When the drive mechanism 10 drives the roller brush 20 to rotate, the size of the gap between different points of the roller brush 20 and the dirt collection channel 220 changes. That is, the dirt collection gap b changes continuously during the rotation of the roller brush 20. When encountering large particles of debris, particles smaller than r can be allowed to enter the dirt collection channel 220 through the dirt collection gap b between the roller brush 20 and the dirt collection channel 220. When the roller brush 20 rotates to a position where the dirt collection gap b is larger, it can transfer the large particles of debris from the dirt collection gap b to the dirt collection channel 220, thereby solving the problem of not being able to clean large particles of debris.

[0054] Please see Figure 3 In one embodiment of the present invention, the limiting frame 30 has a top edge 31 and a bottom edge 32 that are opposite to each other. The roller 22 is always in contact with the top edge 31 and the bottom edge 32 so as to restrict the movement of the roller brush 20 within a fixed width range by means of the top edge 31 and the bottom edge 32.

[0055] With this configuration, during the rotation of the roller brush 20, the top edge 31 and bottom edge 32 of the limiting frame 30 limit the movement of the roller brush 20 within a fixed vertical width range, thereby improving the limiting effect on the roller brush 20 and effectively ensuring that the roller brush 20 can always be in contact with the ground to ensure the cleaning effect on the ground.

[0056] In this embodiment, the limiting frame 30 can be a frame structure with a rectangular cross-section, having a top edge 31, a bottom edge 32, and two side edges.

[0057] It should be noted that when the rotation center of roller 22 fluctuates too much, the roller brush 20 will fluctuate significantly during rotation, which not only easily generates increased noise, but also requires sufficient space, resulting in a larger size of the cleaning equipment 1000.

[0058] Based on this, please refer to Figure 3 , Figure 4 In one embodiment of the present invention, when the limiting frame 30 restricts the movement of the roller brush 20 within a fixed width range, the rotation center of the roller 22 floats up and down, and the range of vertical fluctuation S of the rotation center of the roller 22 is 0 to √3 / 6r.

[0059] With this configuration, if the vertical fluctuation range of the rotation center of the roller 22 is too large, the roller brush 20 will fluctuate significantly during rotation. This not only easily generates increased noise but also requires sufficient space, resulting in a larger size of the cleaning device 1000. Therefore, by setting the vertical fluctuation range S of the rotation center of the roller 22 to 0 to √3 / 6r, ​​the large fluctuation of the roller brush 20 during rotation can be avoided, reducing noise generation and eliminating the need for a large space, thus reducing the size of the cleaning device 1000.

[0060] It should be noted that the vertical fluctuation range of the rotation center of roller 22 refers to the range between the highest and lowest points of its rotation center during the rotation process.

[0061] Please see Figure 3 In one embodiment of the present invention, the cross-section of the roller 21 is a Reuleaux triangle with a side length of r.

[0062] This solution designs the cross-section of the roller 22 of the roller brush 20 as a Reuleaux triangle, making the cross-section of the roller 22 a non-uniform radius shape. When the roller brush assembly 100 is applied to the cleaning equipment 1000, a dirt collection gap b is formed between the roller brush 20 and the dirt collection channel 220. When the drive mechanism 10 drives the roller brush 20 to rotate, the size of the gap between different points of the roller brush 20 and the dirt collection channel 220 changes. That is, the dirt collection gap b changes continuously during the rotation of the roller brush 20. When encountering large particles of debris, the roller brush 20 can transfer the large particles of debris from the dirt collection gap b to the dirt collection channel 220 when it rotates to a position with a larger dirt collection gap b, thereby better solving the problem of not being able to clean large particles of debris.

[0063] It should be noted that the Reuleaux triangle is a type of curve with a fixed width. It is drawn by taking an equilateral triangle, selecting one vertex as the center, and drawing an arc with the side length of the triangle as the radius. The two points of the arc are the other two vertices of the triangle. The closed figure formed by these three arcs is the Reuleaux triangle. The center of the Reuleaux triangle is the centroid of the original equilateral triangle, and the distance from its center to the three vertices of the Reuleaux triangle is different from the distance to the side of the arc.

[0064] If the side length of the Reuleaux triangle is too small, the size of the roller 22 will be relatively small, resulting in a smaller area of ​​the ground that the roller brush 20 passes through when it rotates once, thus affecting the cleaning efficiency of the ground; if the side length of the Reuleaux triangle is too large, the size of the roller 22 will be relatively large, which will make the roller brush 20 occupy more space, resulting in a larger overall size of the cleaning device 1000.

[0065] Based on this, please refer to Figure 3 , Figure 4 In one embodiment of the present invention, the side length r of the Reuleaux triangle is 30mm to 40mm.

[0066] By controlling the side length of the Reuleaux triangle to between 30mm and 40mm, the size of the roller 22 can be kept within a moderate range, thus ensuring cleaning efficiency while avoiding an excessively large overall size of the cleaning equipment 1000.

[0067] As examples, the side length of the Reuleaux triangle can be 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, etc.

[0068] Please see Figure 6In one embodiment of the present invention, the brush 22 includes a first brush portion 221 and a second brush portion 222. On the cross-section of the roller 22, the first brush portion 221 is disposed at the three vertices of the Reuleaux triangle, and the second brush portion 222 is disposed on the side of the Reuleaux triangle. The hardness of the first brush portion 221 is greater than the hardness of the second brush portion 222.

[0069] With this configuration, since the curvature at the three vertices of the Reuleaux triangle is less than the curvature at the sides of the Reuleaux triangle, the brush 22 will alternately contact the ground between the first brush part 221 and the second brush part 222 during the rotation of the roller 22. Therefore, by setting the first brush part 221 with greater hardness at the three vertices with greater curvature, the first brush part 221 with greater hardness can achieve an intermittent pulse cleaning effect when it contacts the ground, thereby improving the cleaning effect.

[0070] In practical applications, the first brush portion 221 and the second brush portion 222 can be the same type of brush 22 or different types of brush 22, as long as the hardness of the first brush portion 221 is greater than the hardness of the second brush portion 222, no specific limitation is made here.

[0071] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the roller brush 20 is connected to the drive mechanism 10 via a universal coupling 50.

[0072] With this configuration, since the rotation center of the roller 22 floats up and down during rotation, the transmission connection between the roller brush 20 and the drive mechanism 10 can be achieved by using the universal coupling 50. This allows the drive mechanism 10 to remain fixed while the rotation center of the roller 22 floats up and down, thus preventing the drive mechanism 10 from colliding with the body 200 of the cleaning equipment 1000 and generating noise due to its up-and-down movement. This ensures that the product will not vibrate up and down during operation.

[0073] In some embodiments, a connecting shaft may extend from one end of the roller 22, and the universal coupling 50 may be connected between the connecting shaft and the output shaft of the drive mechanism 10.

[0074] Please see Figure 1 In one embodiment of the present invention, the limiting frame 30 is connected to the driving mechanism 10 via the bearing 40. With this configuration, the limiting frame 30 can be directly connected to the driving mechanism 10 via the bearing 40. While the driving mechanism 10 drives the roller brush 20 to rotate, the limiting frame 30 can effectively restrict the movement of the roller brush 20 within a fixed vertical width range.

[0075] In practical applications, the bearing 40 can be directly mounted on the output shaft of the drive mechanism 10. Of course, when the drive mechanism 10 and the roller brush 20 are connected by a universal coupling 50, the bearing 40 can be mounted on the connecting shaft between the universal coupling 50 and the roller 22.

[0076] Alternatively, in another embodiment of the present invention, the limiting frame 30 is used to install on the body 200 of the cleaning equipment 1000; with this configuration, the drive mechanism 10, the roller brush 20, the universal coupling 50 and other related components can be used as a whole component, and then the limiting frame 30 is used as an intermediate connecting part to fix the whole component on the body 200 of the cleaning equipment 1000. This can also ensure that the product will not vibrate up and down during operation.

[0077] Please see Figure 1 , Figure 2 In one embodiment of the present invention, the driving mechanism 10 includes a motor and a transmission mechanism, wherein the motor drives the roller brush 20 to rotate through the transmission mechanism.

[0078] With this configuration, the motor operates to drive the roller brush 20 to rotate via the transmission mechanism. The transmission mechanism can smoothly drive the roller brush 20 to rotate and can precisely control the speed of the roller brush 20.

[0079] In practical applications, the transmission mechanism can be a gear set or a structure that combines gears with a synchronous belt; no specific limitation is made here.

[0080] It should be noted that when a universal coupling 50 is provided, the roller 22 can be connected to the transmission mechanism via the universal coupling 50.

[0081] Please see Figure 5 , Figure 6 The present invention also proposes a cleaning device 1000, which includes a body 200 and a roller brush assembly 100. The specific structure of the roller brush assembly 100 is as described in the above embodiments. Since the cleaning device 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The body 200 is provided with a cover 210 and a dirt collection channel 220; the roller brush assembly 100 is disposed on the cover 210, and a dirt collection gap b is formed between the roller brush 20 and the dirt collection channel 220.

[0082] Understandably, the roller brush assembly 100 is mounted on the cover 210, and the dirt collection channel 220 is located on one side of the cover 210, with the dirt collection port of the dirt collection channel 220 facing the roller brush 20. A dirt collection gap b is formed between the dirt collection channel 220 and the roller brush 20. In this way, during operation, the roller brush 20 uses friction with the ground to transfer dirt on the ground through the dirt collection gap b to the dirt collection port. Finally, the negative pressure of the dirt collection port transfers the dirt to the dirt collection channel 220 for collection.

[0083] Of course, the cleaning equipment 1000 may also include a sludge collection box 230 and a blower 240. The sludge collection box 230 is connected to the sludge collection channel 220. Under the action of the blower 240, a negative pressure is generated, and under the action of the negative pressure, the pollutants are sucked into the sludge collection box 230 through the sludge collection channel 220. The user can periodically remove the sludge collection box 230 for cleaning.

[0084] Specifically, the cleaning equipment 1000 may include, but is not limited to, sweeping robots, mopping robots, floor scrubbers, and other similar equipment.

[0085] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A roller brush assembly, characterized in that, include: Drive mechanism; A roller brush is connected to the drive mechanism, which drives the roller brush to rotate. The roller brush includes a roller and bristles disposed on the outer periphery of the roller. A limiting frame is provided, in which one end of the roller is inserted. The limiting frame is used to restrict the movement of the roller within a fixed vertical width range. The side length of one side of the roller is defined as r. The point where the roller contacts the inner side wall of the limiting frame when it rotates is called the contact point. The distance L between the contact point and the bottom edge of the limiting frame is 0 to r.

2. The roller brush assembly as described in claim 1, characterized in that, The limiting frame has a top edge and a bottom edge that are opposite each other. The roller is always in contact with the top edge and the bottom edge to restrict the movement of the roller within a fixed vertical width range.

3. The roller brush assembly as described in claim 2, characterized in that, When the limiting frame restricts the brush to move within a fixed vertical width range, the rotation center of the roller floats vertically, and the vertical floating range S of the roller's rotation center is...

4. The roller brush assembly as described in any one of claims 1 to 3, characterized in that, The roller has a Reuleaux triangle cross-section with a side length of r.

5. The roller brush assembly as described in claim 4, characterized in that, The side length r of the Reuleaux triangle is 30mm to 40mm.

6. The roller brush assembly as described in claim 4, characterized in that, The brush includes a first brush portion and a second brush portion. On the cross-section of the roller, the first brush portion is located at the three vertices of the Reuleaux triangle, and the second brush portion is located on the side of the Reuleaux triangle. The hardness of the first brush portion is greater than that of the second brush portion.

7. The roller brush assembly as described in any one of claims 1 to 3, characterized in that, The roller brush is connected to the drive mechanism via a universal coupling.

8. The roller brush assembly as described in any one of claims 1 to 3, characterized in that, The limiting frame is connected to the driving mechanism via a bearing; Alternatively, the limiting frame is used to be installed on the body of the cleaning equipment.

9. The roller brush assembly as described in any one of claims 1 to 3, characterized in that, The drive mechanism includes a motor and a transmission mechanism, and the motor drives the roller brush to rotate through the transmission mechanism.

10. A cleaning device, characterized in that, include: The main body is equipped with a cover and a sewage collection channel; The roller brush assembly as described in any one of claims 1 to 9 is disposed on the cover, and a dirt collection gap is formed between the roller brush and the dirt collection channel.

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