Rolling brush assembly and cleaning equipment

Abstract

The utility model 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 provided by the utility model, the problem that large-particle garbage cannot be cleaned can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a roller brush assembly and a cleaning device. Background Art

[0002] With the improvement of living standards, various time-saving and labor-saving cleaning equipment (such as sweeping robots, mopping robots, mopping machines, floor washing machines, etc.) have gradually become widely used.

[0003] In the related art, the roller brush of the cleaning equipment has an interference fit with the ground during rotation, so as to transfer dirt on the ground (including garbage, dust, sewage, etc.) to the sewage collection channel, and the gap between the roller brush and the sewage collection channel is fixed. When large particles of garbage appear on the ground, they will be blocked between the roller brush and the sewage collection channel, and the large particles of garbage cannot be cleaned. Utility Model Content

[0004] The main purpose of the utility model is to provide a roller brush assembly and a cleaning device, aiming to solve the problem that large particles of garbage cannot be cleaned.

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

[0006] Drive mechanism;

[0007] A roller brush is connected to the driving mechanism, and the driving mechanism drives the roller brush to rotate. The roller brush includes a roller and a brush provided on the outer peripheral side of the roller;

[0008] A limit frame, one end of the roller is inserted into the limit frame, and the limit frame is used to limit the movement of the roller brush within a fixed width range;

[0009] The length of one side of the roller is defined as r, the point where the roller contacts an inner side wall of the limiting frame during rotation is defined as the contact point, and the distance L between the contact point and the bottom edge of the limiting frame is 0-r.

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

[0011] In one embodiment, when the limit frame restricts the roller brush to move within a fixed width range, the rotation center of the roller floats up and down, and the floating range S of the rotation center of the roller is

[0012]

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

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

[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 arranged at the three vertices of the Reuleaux triangle, and the second brush portion is arranged at the side of the Reuleaux triangle. The hardness of the first brush portion is greater than that of the second brush portion.

[0016] In one embodiment, the roller brush is connected to the driving mechanism via a universal joint.

[0017] In one embodiment, the limit 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 device.

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

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

[0021] The main body is provided with a cover and a sewage collecting channel;

[0022] The roller brush assembly as described above is provided on the cover body, and a dirt collecting gap is formed between the roller brush and the dirt collecting channel.

[0023] The technical solution of the present invention uses a limit frame to restrict the movement of the roller brush within a fixed width range, thereby ensuring that the roller brush is always in contact with the ground to ensure a cleaning effect on the ground. In addition, when the roller brush rotates, the contact point between the roller and the inner side wall of the limit frame will continuously change, and the distance between the contact point and the bottom edge of the limit frame will change within a range of 0 to r. When the roller brush assembly is used in a cleaning device, a dirt collection gap will be formed between the roller brush and the dirt collection channel. When the driving mechanism drives the roller brush to rotate, the position of different points of the roller brush will change in size with the gap between the dirt collection channel. That is, the dirt collection gap will continuously change during the rotation of the roller brush. When encountering large particles of garbage, particles smaller than r in size can be allowed to pass through the dirt collection gap between the roller brush and the dirt collection channel and enter the dirt collection channel. When the roller brush rotates to a position with a larger dirt collection gap, the large particles of garbage can be transferred from the dirt collection gap to the dirt collection channel, thereby solving the problem of being unable to clean large particles of garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A side view of an embodiment of a roller brush assembly provided by the present utility model;

[0026] Figure 2 This is a structural diagram of an embodiment of a roller brush assembly provided by the present utility model;

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

[0028] Figure 4 This is a diagram showing the change in the rotation center of the roller in an embodiment of the rolling and grabbing assembly provided by the present invention during the up and down fixed width movement;

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

[0030] Figure 6 This is a partial cross-sectional view of an embodiment of the cleaning device provided by the utility model.

[0031] Description of Figure Numbers:

[0032] Label name Label name 1000 cleaning equipment 32 bottom edge 100 Roller brush assembly a Touchpoints 10 Drive mechanism 40 bearings 20 Roller brush 50 Universal coupling 21 scroll wheel 200 Ontology 22 brush 210 Cover 221 First brush part 220 Sewage collection channel 222 Second brush part b Dirt collection gap 30 Limiting box 230 Dirt collection box 31 Top edge 240 fan

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

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall 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 position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] With the improvement of living standards, various time-saving and labor-saving cleaning equipment (such as sweeping robots, mopping machines, floor washing machines, etc.) have gradually become widely used.

[0038] In the related art, the roller brush of the cleaning equipment has an interference fit with the ground during rotation, so as to transfer dirt on the ground (including garbage, dust, sewage, etc.) to the sewage collection channel, and the gap between the roller brush and the sewage collection channel is fixed. When large particles of garbage appear on the ground, they will be blocked between the roller brush and the sewage collection channel, and the large particles of garbage cannot be cleaned.

[0039] Based on the above problems, the present invention proposes a roller brush assembly 100, which aims to solve the problem of being unable to clean large particles of garbage. The roller brush assembly 100 is applied to a cleaning device 1000, which can be a sweeping robot, a mopping machine, a floor scrubber and other equipment. The cleaning device 1000 can also include a cover body 210 and a dirt collecting channel 220. The roller brush assembly 100 is provided on the cover body 210, and the dirt collecting channel 220 is provided on one side of the cover body 210, and the dirt collecting port of the dirt collecting channel 220 is provided toward the roller brush 20. A dirt collecting gap b is formed between the dirt collecting 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 collecting gap b to the dirt collecting port, and finally transfers the dirt to the dirt collecting channel 220 through the negative pressure of the dirt collecting port to collect the dirt. The structure of the roller brush assembly 100 will be described below in the form of an embodiment:

[0040] See also 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 limit frame 30; the roller brush 20 is connected to the driving mechanism 10 by transmission, and the driving mechanism 10 drives the roller brush 20 to rotate. The roller brush 20 includes a roller 22 and a brush 22 arranged on the outer peripheral side of the roller 22; one end of the roller 21 is inserted into the limit frame 30, and the limit frame 30 is used to limit the movement of the roller brush 20 within a fixed upper and lower width range; the side length of one side of the roller is defined as r, and the point where the roller 21 contacts the inner wall of the limit frame 30 during rotation is the contact point a, and the distance L between the contact point a and the bottom edge 32 of the limit frame is 0~r.

[0041] It is understood that the drive mechanism 10 is mounted on the body 200 of the cleaning device 1000 to support the roller brush 20. The roller brush 20 can be partially mounted in the cover 210 of the body 200 and partially extended to the bottom of the cover 210 to frictionally contact the ground when the roller brush 20 rotates.

[0042] In actual application, the brush 22 can be connected to the outer peripheral side of the roller 22 by crimping, injection molding, bonding, adsorption, bundling, etc. to ensure the installation reliability of the brush 22 and the roller 22, and avoid the brush 22 falling off from the roller 22 during operation, which affects the cleaning effect.

[0043] The driving mechanism 10 can be a rotating motor directly, or a structure in which a motor cooperates with one or more gears (equivalent to a structure in which a motor cooperates with a reducer), or a structure in which a motor cooperates with a synchronous belt. As long as the rotation of the roller brush 20 can be accurately controlled, no specific limitation is made here.

[0044] In one embodiment, when the driving mechanism 10 is a rotary motor, a mounting groove can be provided on the end surface 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, the roller brush 20 can be directly driven to rotate through the output shaft.

[0045] In another embodiment, when the driving mechanism 10 is a structure in which a motor cooperates with one or more gears, a mounting shaft can be provided on the end face of the roller 22, and mating teeth can be provided on the outer peripheral side of the mounting shaft. A gear is sleeved on the output shaft of the motor, and the gear can be directly engaged with the mating teeth of the mounting shaft, or can be engaged with the mating teeth of the mounting shaft through other gears. When the motor is working, the roller brush 20 can be driven to rotate through one or more gears.

[0046] In practical applications, the driving mechanism 10 can be disposed 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 can be disposed in the hollow cavity of the roller 22 . This allows the space inside the roller 22 to be utilized, making the overall structure more compact and reducing the volume of the cleaning device 1000 .

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

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

[0050] It is understood that the limit frame 30 is used to limit the movement of the roller brush 20 within the upper and lower fixed width range, and the rotation center of the roller 22 will float up and down. Figure 4 .

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

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

[0053] In summary, the technical solution of the present invention uses a limit frame 30 to limit the movement of the roller brush 20 within a fixed width range up and down, thereby ensuring that the roller brush 20 can always be in contact with the ground to ensure the cleaning effect of the ground; and when the roller brush 20 is rotating, the contact point a where the roller 22 contacts the inner wall of the limit frame 30 will continue to change, by making the distance between the contact point a and the bottom edge 32 of the limit frame 30 change within 0~r. When the roller brush assembly 100 is applied to the cleaning equipment 1000, a dirt collecting gap b will be formed between the roller brush 20 and the dirt collecting channel 220. When the driving mechanism 10 drives the roller brush 20 to rotate, the positions of different points of the roller brush 20 will change in size with the gap between the dirt collecting channel 220. That is, during the rotation of the roller brush 20, the dirt collecting gap b will continue to change. When encountering large particles of garbage, particles smaller than r can be allowed to enter the dirt collecting channel 220 through the dirt collecting gap b between the roller brush 20 and the dirt collecting channel 220. When the roller brush 20 rotates to a position with a larger dirt collecting gap b, the large particles of garbage can be transferred from the dirt collecting gap b to the dirt collecting channel 220, thereby solving the problem of being unable to clean large particles of garbage.

[0054] See also Figure 3 In one embodiment of the present invention, the limit frame 30 has a top edge 31 and a bottom edge 32 that are opposite to each other, and the roller 22 is always in contact with the top edge 31 and the bottom edge 32 to limit the movement of the roller brush 20 within a fixed width range in the upper and lower directions through the top edge 31 and the bottom edge 32.

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

[0056] In this embodiment, the limiting frame 30 may 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 upward and downward floating range of the rotation center of the roller 22 is too large, the roller brush 20 will float over a large range during the rotation process, which will not only easily generate increased noise, but also require sufficient space to be reserved, resulting in a larger size of the cleaning device 1000.

[0058] Based on this, see Figure 3 、 Figure 4 In one embodiment of the present invention, when the limit frame 30 restricts the roller brush 20 from moving within a fixed width range, the rotation center of the roller 22 floats up and down, and the floating range S of the rotation center of the roller 22 is 0 to √3 / 6r.

[0059] With such an arrangement, when the upward and downward floating range of the rotation center of the roller 22 is too large, the roller brush 20 will float over a large range during the rotation process, which will not only easily generate increased noise, but also require sufficient space to be reserved, resulting in a larger volume of the cleaning device 1000. Therefore, by setting the upward and downward floating range S of the rotation center of the roller 22 to 0~√3 / 6r, ​​the roller brush 20 can be prevented from floating over a large range during the rotation process, which can reduce the generation of noise and eliminate the need to reserve a large space, thereby reducing the volume of the cleaning device 1000.

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

[0061] See also Figure 3 In one embodiment of the present invention, the cross section of the roller 21 is a Reuleaux triangle, and the side length of the Reuleaux triangle is r.

[0062] This solution designs the cross-section of the roller 22 of the roller brush 20 into a Reuleaux triangle, resulting in a non-constant radius cross-section of the roller 22. When the roller brush assembly 100 is used in the cleaning device 1000, a dirt collection gap b is formed between the roller brush 20 and the dirt collection channel 220. As the drive mechanism 10 rotates the roller brush 20, the gap between the roller brush 20 and the dirt collection channel 220 changes in size at different points on the roller brush 20. That is, the dirt collection gap b continuously changes during the rotation of the roller brush 20. When encountering large particles of waste, the roller brush 20 can transfer the large particles of waste from the dirt collection gap b to the dirt collection channel 220 by rotating to a position where the dirt collection gap b is larger, thereby better solving the problem of being unable to clean large particles of waste.

[0063] It's important to note that a Reuleaux triangle is a type of constant-width curve. To draw it, take an equilateral triangle, select a vertex as the center, and draw an arc with the length of the triangle's side as the radius. The two points of the arc become 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 its distance from the three vertices of the Reuleaux triangle is different from the length of the arc's side.

[0064] Since the side length of the Reuleaux triangle is too small, the size of the roller 22 will be relatively small, so that the area of ​​the ground passed by the roller brush 20 during one rotation is smaller, thereby affecting the cleaning efficiency of the ground; and since the side length of the Reuleaux triangle is too large, the size of the roller 22 will be relatively large, so that the roller brush 20 will need to occupy a larger space, resulting in a larger overall volume of the cleaning device 1000.

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

[0066] In this way, by controlling the side length of the Reuleaux triangle between 30 mm and 40 mm, the size of the roller 22 can be controlled within a relatively moderate range, which can ensure the cleaning efficiency while avoiding the overall volume of the cleaning device 1000 being too large.

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

[0068] See also 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 arranged at the three vertices of the Lego triangle, and the second brush portion 222 is arranged at the side of the Lego triangle. The hardness of the first brush portion 221 is greater than that of the second brush portion 222.

[0069] In this arrangement, since the curvature at the three vertices of the Reuleaux triangle is smaller than the curvature at the side length of the Reuleaux triangle, during the rotation of the roller 22, the brush 22 will alternately contact the ground between the first brush portion 221 and the second brush portion 222. Therefore, the first brush portion 221 with greater hardness is arranged at the three vertices with greater curvature. This can enable the first brush portion 221 with greater hardness to achieve an intermittent pulse-like cleaning effect when in contact with the ground, thereby improving the cleaning effect.

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

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

[0072] With such arrangement, since the rotation center of the roller 22 floats up and down during the rotation process, the universal joint 50 is used to realize the transmission connection between the roller brush 20 and the drive mechanism 10. The rotation center of the roller 22 can float up and down while the drive mechanism 10 can remain fixed, which can prevent the drive mechanism 10 from floating up and down and colliding with the main body 200 of the cleaning device 1000 to generate noise, thereby ensuring that there will be no up and down vibration problem during the operation of the product.

[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 driving mechanism 10 .

[0074] See also Figure 1 In one embodiment of the present invention, the limit frame 30 is connected to the driving mechanism 10 through the bearing 40. With this arrangement, the limit frame 30 can be directly connected to the driving mechanism 10 through the bearing 40. When the driving mechanism 10 drives the roller brush 20 to rotate, the limit frame 30 can effectively limit the movement of the roller brush 20 within the upper and lower fixed width range.

[0075] In actual application, the bearing 40 can be directly mounted on the output shaft of the driving mechanism 10. Of course, when the driving mechanism 10 and the roller brush 20 are connected through the 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 limit frame 30 is used to be installed on the main body 200 of the cleaning device 1000; with such a configuration, the driving mechanism 10, the roller brush 20, the universal coupling 50 and other related components can be treated as an integral component, and then the limit frame 30 is used as an intermediate connecting component to fix the entire component on the main body 200 of the cleaning device 1000, which can also ensure that there will be no up and down vibration problems when the product is running.

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

[0078] With such an arrangement, the motor works to drive the roller brush 20 to rotate through the transmission mechanism. The roller brush 20 can be driven to rotate smoothly through the transmission mechanism, and the rotation speed of the roller brush 20 can be accurately controlled.

[0079] In practical applications, the transmission mechanism may be a gear set or a structure in which gears cooperate with a synchronous belt, which is not specifically limited here.

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

[0081] See also Figure 5 、 Figure 6 The present invention also provides a cleaning device 1000, which includes a main body 200 and a roller brush assembly 100. The specific structure of the roller brush assembly 100 is similar to the above-mentioned embodiments. Since the present cleaning device 1000 utilizes all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and will not be described in detail here. The main 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] It can be understood that the roller brush assembly 100 is arranged on the cover body 210, the dirt collecting channel 220 is arranged on one side of the cover body 210, and the dirt collecting port of the dirt collecting channel 220 is arranged toward the roller brush 20, and a dirt collecting gap b is formed between the dirt collecting channel 220 and the roller brush 20. In this way, during the operation, the roller brush 20 uses friction with the ground to transfer the dirt on the ground to the dirt collecting gap b to the dirt collecting port, and finally transfers the dirt to the dirt collecting channel 220 through the negative pressure of the dirt collecting port to collect the dirt.

[0083] Of course, the cleaning device 1000 can also include a dirt collecting box 230 and a fan 240. The dirt collecting box 230 is connected to the dirt collecting channel 220. Under the action of the fan 240, negative pressure is generated. Under the action of the negative pressure, the pollutants are sucked into the dirt collecting box 230 through the dirt collecting channel 220. The user can regularly pull out the dirt collecting box 230 for cleaning.

[0084] Specifically, the cleaning device 1000 may include but is not limited to a sweeping robot, a mopping robot, a mopping machine, a floor scrubber and the like.

[0085] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in 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 driving mechanism, and the driving mechanism drives the roller brush to rotate. The roller brush includes a roller and a brush provided on the outer peripheral side of the roller; A limit frame, one end of the roller is inserted into the limit frame, and the limit frame is used to limit the movement of the roller brush within a fixed width range; The length of one side of the roller is defined as r, the point where the roller contacts an inner side wall of the limiting frame during rotation is defined as the contact point, and the distance L between the contact point and the bottom edge of the limiting frame is 0-r.

2. The roller brush assembly according to claim 1, wherein: The limit frame has a top edge and a bottom edge that are opposite to each other, and the roller is always in contact with the top edge and the bottom edge to limit the roller brush from moving within a fixed width range.

3. The roller brush assembly according to claim 2, wherein: When the limit frame restricts the roller brush to move within the upper and lower fixed width range, the rotation center of the roller floats up and down, and the upper and lower floating range S of the rotation center of the roller is 4. The roller brush assembly according to any one of claims 1 to 3, characterized in that: The cross section of the roller is a Reuleaux triangle, and the side length of the Reuleaux triangle is r.

5. The roller brush assembly according to claim 4, wherein: The side length r of the Reuleaux triangle is 30 mm to 40 mm.

6. The roller brush assembly according to claim 4, wherein: The brush includes a first brush portion and a second brush portion. On the cross section of the roller, the first brush portion is arranged at the three vertices of the Reuleaux triangle, and the second brush portion is arranged at 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 according to any one of claims 1 to 3, characterized in that: The roller brush is connected to the driving mechanism via a universal coupling.

8. The roller brush assembly according to 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 device.

9. The roller brush assembly according to any one of claims 1 to 3, characterized in that: The driving 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 provided with a cover and a sewage collecting channel; The roller brush assembly according to any one of claims 1 to 9 is provided on the cover body, and a dirt collecting gap is formed between the roller brush and the dirt collecting channel.

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