Roller brush, floor brush assembly and floor scrubber

Abstract

The present application relates to a roller brush, a floor brush assembly and a floor scrubber, specifically including a roller brush body, a main shaft actuator and a deceleration device. The roller brush body can rotate around its own axis, and the roller brush body has a mounting cavity. The main shaft is arranged in the mounting cavity and extends along the axial direction of the roller brush body, and the main shaft is located at the axis center position of the roller brush body. The actuator is assembled on the main shaft and is eccentrically arranged relative to the radial direction of the roller brush body. Among them, the main shaft is connected to the roller brush body in a transmission manner, and when the main shaft is controlled to rotate at a first speed, the actuator rotates synchronously with the main shaft. After the main shaft is decelerated by the deceleration device, the motion is transmitted to the roller brush body, driving the roller brush body to rotate at a second speed and the first speed is greater than the second speed. When the actuator is close to the ground, the actuator will apply a downward pressure to the roller brush body due to the centrifugal rotation, thereby easily scrubbing the dirt from the ground. At the same time, the roller brush body rotates at a low speed at the second speed to avoid the roller brush from being easily worn due to excessive speed.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a roller brush, a floor brush assembly and a floor scrubber. Background Art

[0002] With the changes in the existing social environment and people's pursuit of health, as well as the improvement of living standards, people have higher and higher requirements for their family living environment. In order to better clean the dirty floor and ensure the cleaning quality, floor washing machines that integrate floor washing, mopping and vacuuming have appeared on the market. They are obvious in cleaning and easy to use.

[0003] One of the key components of a floor scrubber is the floor brush assembly. The floor scrubber uses a motor to drive the roller brush in the floor brush assembly to rotate, making close contact with the floor to scrub the stains on the floor. The fan then generates negative pressure to suck away the stains, thereby achieving the purpose of cleaning the floor.

[0004] However, in actual operation, when scrubbing the floor, if you encounter stubborn dirt, you need to repeatedly scrub it to remove it. In actual work, in order to avoid the wear of the roller brush, the roller brush speed cannot be too high. How to improve the scrubbing effect while protecting the roller brush is an urgent problem that the floor scrubber needs to solve.

[0005] Application Contents

[0006] Based on this, the present application proposes a roller brush, a floor brush assembly and a floor scrubber to address the above-mentioned technical problems. The roller brush, the floor brush assembly and the floor scrubber have the technical effect of being able to protect the roller brush while improving the floor scrubbing effect.

[0007] A roller brush, comprising:

[0008] The roller brush body can rotate around its own axis, and the roller brush body has a mounting cavity;

[0009] A main shaft is disposed in the mounting cavity and extends along the axial direction of the roller brush body, and the main shaft is located at the axis of the roller brush body; and

[0010] An action member, mounted on the main shaft and eccentrically arranged relative to the radial direction of the roller brush body;

[0011] A speed reducer, through which the main shaft is drivingly connected to the roller brush body;

[0012] Wherein, when the main shaft is controlled to rotate at a first speed, the actuator rotates synchronously with the main shaft, and the reduction device drives the roller brush body to rotate at a second speed, and the first speed is greater than the second speed.

[0013] Thus, when the main shaft drives the action member to rotate at a high speed at the first speed, when the action member is close to the ground, the action member will exert a downward pressure on the entire roller brush body due to the centrifugal force of the rotation, so that the dirt can be easily scrubbed off the ground when the roller brush body scrubs the ground. At the same time, the roller brush body rotates at a low speed at a lower second speed, so as to scrub the ground slowly, avoiding the phenomenon that the roller brush is easy to wear due to excessive speed, thereby achieving the purpose of protecting the roller brush and improving the scrubbing effect.

[0014] In one of the embodiments, the active member includes a fixed end and a centrifugal end, the fixed end is sleeved on the main shaft, and the centrifugal end extends along the radial direction of the roller brush body.

[0015] In this way, when the main shaft drives the action member to rotate, the action member performs centrifugal motion. When the centrifugal end is rotated to the side away from the ground, the action member pulls the entire roller brush body upward. When the centrifugal end is rotated to the side close to the ground, the action member pulls the entire roller brush body downward, thereby applying a pressing force to the ground.

[0016] In one embodiment, the projection of the centrifugal end on the radial direction of the roller brush body is in an arc shape, and the arc-shaped convex surface of the centrifugal end is in contact with the cavity wall of the roller brush body facing the installation cavity.

[0017] In this way, the centrifugal end of the action member fits with the roller brush body, ensuring that the rotation is more stable and the transmission of the ground pressure force is more effective.

[0018] In one embodiment, the roller brush further comprises end cover assemblies detachably mounted on both axial ends of the roller brush body, and the end cover assemblies are used to close the installation cavity;

[0019] The reduction device is arranged between the end cover assembly and the main shaft.

[0020] In this way, by controlling the rotation of the main shaft, the speed reducer transmits power to the end cover assembly, and the roller brush body is driven to rotate by the end cover assembly, thereby realizing stable power transmission. When the roller brush body is damaged and needs to be replaced, it is only necessary to separate the end cover assembly from the roller brush body and replace the roller brush body alone, and the remaining structures such as the speed reducer and the end cover assembly do not need to be changed, thereby making the structure simple and easy to replace.

[0021] In one embodiment, the end cover assembly includes a first end cover located at one axial end of the roller brush body, a first transmission end is formed on a side of the main shaft close to the first end cover, and the reduction device is arranged between the first transmission end and the main shaft.

[0022] In this way, the axial rotation of the roller brush body can be driven by one axial end of the roller brush body, which ensures the normal operation of the roller brush while saving parts of the roller brush, making the structure of the roller brush simple and reducing the cost.

[0023] In one embodiment, the reduction gear comprises a sun gear connected to the first transmission end, a gear ring provided on the first end cover, and a plurality of planetary gears meshed between the sun gear and the gear ring;

[0024] When the sun gear is controlled to rotate, the main shaft rotates synchronously with the sun gear, and the sun gear drives the plurality of planetary gears to revolve around the sun gear while driving the gear ring to rotate.

[0025] In one embodiment, the first end cover has an operating cavity disposed away from the installation cavity, the gear ring is disposed on a cavity wall of the first end cover facing the operating cavity, and the sun gear is located in the operating cavity.

[0026] In this way, when the sun gear is driven to rotate by an external drive motor, or when the gear ring rotates, the operating chamber can provide sufficient rotation space, thereby avoiding interference between the transmission of the reduction device and the rotation of the roller brush body.

[0027] In one embodiment, the roller brush further comprises a fastener, the action member is detachably mounted on the main shaft, and the fastener is used to fasten the action member and the main shaft, thereby achieving the replaceability of the action member.

[0028] According to another aspect of the present application, a floor brush assembly is provided, comprising a shell and the roller brush described in any one of the above embodiments, wherein the roller brush is assembled in the shell and rotatably connected to the shell.

[0029] According to another aspect of the present application, a floor scrubber is provided, comprising the floor brush assembly described in the above embodiment.

[0030] The above-mentioned roller brush is used to clean the position to be cleaned, such as the ground. The roller brush specifically includes a roller brush body, a main shaft acting member and a deceleration device. The roller brush body can rotate around its own axis, and the roller brush body has a mounting cavity. The main shaft is arranged in the mounting cavity and extends along the axial direction of the roller brush body, and the main shaft is located at the axis center position of the roller brush body. The acting member is assembled on the main shaft and is eccentrically arranged relative to the radial direction of the roller brush body. Among them, the main shaft is connected to the roller brush body in a transmission manner. When the main shaft is controlled to rotate at a first speed, the acting member rotates synchronously with the main shaft. The main shaft transmits the motion to the deceleration device, and the deceleration device transmits the motion to the roller brush body after deceleration, driving the roller brush body to rotate at a second speed. And the first speed is greater than the second speed. In this way, when the main shaft drives the acting member to rotate at a high speed at the first speed, until the acting member is close to the ground, the acting member will apply a downward pressure to the entire roller brush body due to the rotation centrifugal force, so that the dirt can be easily scrubbed off the ground when the roller brush body scrubs the ground. At the same time, the roller brush body rotates at a second lower speed, so as to slowly scrub the floor, thereby avoiding the phenomenon that the roller brush is easily worn due to excessively high speed, thereby achieving the purpose of protecting the roller brush while improving the floor washing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the exploded structure of a roller brush provided in one embodiment of the present application;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of the roller brush provided in;

[0033] Figure 3 for Figure 1 A cross-sectional schematic diagram of a roller brush from a first perspective provided in;

[0034] Figure 4 for Figure 1 A perspective view of a second viewing angle of the roller brush provided in;

[0035] Figure 5 for Figure 1 A third-view perspective view of the roller brush provided in FIG.

[0036] Figure numerals: 100, roller brush; 10, roller brush body; 11, installation cavity; 20, main shaft; 21, first transmission end; 30, active part; 31, fixed end; 32, centrifugal end; 40, reduction gear; 41, sun gear; 42, gear ring; 43, planetary gear; 51, first end cover; 511, operating cavity; 52, second end cover; 521, end cover handle; 60, bearing; 70, bushing; 80, fastener. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0043] See also Figures 1 to 3 An embodiment of the present application provides a roller brush 100 for cleaning a location to be cleaned, such as a floor.

[0044] The roller brush 100 specifically includes a roller brush body 10, a main shaft 20, an action member 30 and a speed reducer 40. The roller brush body 10 can rotate around its own axis, and the roller brush body 10 has a mounting cavity 11. The main shaft 20 is arranged in the mounting cavity 11 and extends along the axial direction of the roller brush body 10, and the main shaft 20 is located at the axial center position of the roller brush body 10. The action member 30 is assembled on the main shaft 20 and is eccentrically arranged relative to the radial direction of the roller brush body 10. Among them, the main shaft 20 is connected to the roller brush body 10 in a transmission manner. When the main shaft 20 is controlled to rotate at a first speed, the action member 30 rotates synchronously with the main shaft 20. The main shaft 20 transmits the motion to the speed reducer 40, and the speed reducer 40 transmits the motion to the roller brush body 10 after deceleration, driving the roller brush body 10 to rotate at a second speed. And the first speed is greater than the second speed. Thus, when the main shaft 20 drives the action member 30 to rotate at a high speed at the first speed, when the action member 30 is close to the ground, the action member 30 will apply a downward pressure to the entire roller brush body 10 due to the centrifugal force of the rotation, so that the dirt can be easily scrubbed off the ground when the roller brush body 10 scrubs the ground. At the same time, the roller brush body 10 rotates at a low speed at a lower second speed, so as to scrub the ground slowly, avoiding the phenomenon that the roller brush 100 is easy to wear due to excessive speed, thereby achieving the purpose of protecting the roller brush 100 and improving the scrubbing effect.

[0045] It can be understood that while the roller brush body 10 cleans the floor slowly at the second rotation speed, it can also ensure that sufficient pressure is applied to the floor, thereby improving the cleaning effect of the floor. The floor can be cleaned without repeated brushing, thereby improving the cleaning efficiency.

[0046] In one embodiment, the action member 30 includes a fixed end 31 and a centrifugal end 32, wherein the fixed end 31 is sleeved on the main shaft 20, and the centrifugal end 32 extends along the radial direction of the roller brush body 10, that is, one end of the opposite ends of the action member 30 is located at the axis of the roller brush body 10, and the other end is extended along the radial direction of the roller brush body 10 toward the roller brush body 10. In this way, when the main shaft 20 drives the action member 30 to rotate, the action member 30 performs centrifugal motion, and when the centrifugal end 32 is rotated to the side away from the ground, the action member 30 will pull the entire roller brush body 10 upward. When the centrifugal end 32 is rotated to the side close to the ground, the action member 30 will pull the entire roller brush body 10 downward, thereby applying a ground pressure to the ground.

[0047] Furthermore, the higher the speed of the first rotational speed, the higher the frequency of the upward and downward vibration of the roller brush body 10, and the greater the number and pressure of impacts on the ground. That is, by increasing the first rotational speed, the ground pressure can also be increased, thereby further improving the cleaning effect.

[0048] In one embodiment, the projection of the centrifugal end 32 on the radial surface of the roller brush body 10 is arc-shaped, and the arc-shaped convex surface of the centrifugal end 32 is in contact with the cavity wall of the roller brush body 10 facing the installation cavity 11, so that the centrifugal end 32 of the action member 30 is in contact with the roller brush body 10, ensuring that the rotation is more stable and the transmission of the pressure force is more effective.

[0049] It is worth noting that the fit here does not mean complete fit, but that the arcuate convex surface of the centrifugal end 32 is relatively close to the cavity wall of the roller brush body 10 facing the mounting cavity 11, rather than being completely connected, so as to achieve different speeds of rotation of the active member 30 and the roller brush body 10.

[0050] In one embodiment, the roller brush 100 also includes an end cap assembly detachably mounted on both axial ends of the roller brush body 10, and the end cap assembly is used to close the mounting cavity 11. The speed reducer 40 is arranged between the end cap assembly and the main shaft 20. Thus, by controlling the rotation of the main shaft 20, the speed reducer 40 transmits power to the end cap assembly, and the roller brush body 10 is driven to rotate by the end cap assembly, thereby realizing stable power transmission. When the roller brush body 10 is damaged and needs to be replaced, it is only necessary to separate the end cap assembly from the roller brush body 10, and only replace the roller brush body 10 alone, and the remaining structures such as the speed reducer 40 and the end cap assembly do not need to be changed, so that the structure is simple and easy to replace.

[0051] Specifically, the end cap assembly includes a first end cap 51 located at one axial end of the roller brush body 10, a side of the main shaft 20 close to the first end cap 51 forms a first transmission end 21, and the reduction device 40 is arranged between the first transmission end 21 and the main shaft 20. Thus, the axial rotation of the roller brush body 10 can be driven by one axial end of the roller brush body 10, which ensures the normal operation of the roller brush 100, saves parts of the roller brush 100, and makes the structure of the roller brush 100 simple and reduces the cost.

[0052] Furthermore, the end cover assembly also includes a second end cover 52 located at the other axial end of the roller brush body 10. The second end cover 52 forms an end cover handle 521 protruding from the surface of the roller brush body 10. When disassembling, the roller brush body 10 can be easily removed by separating the second end cover 52 from the roller brush body 10 and holding the end cover handle 521 by hand.

[0053] In one embodiment, the reduction device 40 includes a sun gear 41 connected to the first transmission end 21, a gear ring 42 provided on the first end cover 51, and a plurality of planetary gears 43 meshing between the sun gear 41 and the gear ring 42. The sun gear 41, the gear ring 42 and the planetary gears 43 form a complete set of planetary gear trains. When the sun gear 41 rotates under control, the main shaft 20 rotates synchronously with the sun gear 41, and the sun gear 41 drives the plurality of planetary gears 43 to revolve around the sun gear 41 while driving the gear ring 42 to rotate. Since the number of teeth of the gear ring 42 is greater than that of the sun gear 41, the rotation speed of the gear ring 42 is less than that of the sun gear 41, thereby reducing the first rotation speed of the main shaft 20 to the second rotation speed of the roller brush body 10, and finally achieving the internal and external rotation speed difference, reducing the speed of the roller brush body 10 while increasing the rotation speed of the action member 30.

[0054] In one embodiment, the sun gear 41 is connected to an external drive motor, and the drive motor drives the sun gear 41 to rotate at a first speed and high speed, thereby ensuring that the action member 30 has a relatively high rotation speed, so that the ground pressing force is significantly increased.

[0055] In some other embodiments, other transmission mechanisms may be used for transmission, which are not limited to the planetary gear system in the above embodiments, and the present application does not make any limitation thereto.

[0056] In one embodiment, the first end cover 51 has an operating cavity 511 disposed opposite to the mounting cavity 11, the gear ring 42 is disposed on the cavity wall of the first end cover 51 facing the operating cavity 511, and the sun gear 41 is located in the operating cavity 511. When the sun gear 41 is driven to rotate by an external drive motor, or when the gear ring 42 rotates, the operating cavity 511 can provide sufficient rotation space, thereby avoiding interference between the transmission of the reduction device 40 and the rotation of the roller brush body 10.

[0057] In one embodiment, the roller brush 100 also includes a bearing 60, and the opposite ends of the main shaft 20 are connected to the end cover assembly through the bearings 60 respectively. The inner ring of the bearing 60 is connected to the main shaft 20, and the outer ring of the bearing 60 is connected to the end cover assembly, thereby forming different rotation speeds between the inner and outer rings of the bearing 60, and at the same time reducing the friction coefficient of the main shaft 20 and the end cover assembly during movement, so that the rotation of the main shaft 20 and the end cover assembly is smoother.

[0058] In one embodiment, the roller brush 100 further includes a sleeve 70, which is sleeved on the main shaft 20 and located between the bearing 60 and the end cover assembly, and is used to overcome the axial movement of the end cover assembly on the main shaft 20, making the connection more stable.

[0059] In one embodiment, the roller brush 100 further includes a fastener 80 , and the active member 30 is detachably mounted on the main shaft 20 . The fastener 80 is used to fasten the active member 30 and the main shaft 20 , thereby achieving the replaceability of the active member 30 .

[0060] According to another aspect of the present application, a floor brush assembly is provided, comprising a housing and a roller brush 100 provided in any of the above embodiments, wherein the roller brush 100 is assembled in the housing and rotatably connected to the housing. Thus, the floor brush assembly can rotate and clean the position to be cleaned. Specifically, the roller brush 100 is rotatably connected to the housing via an end cap assembly.

[0061] In this way, when the main shaft 20 drives the action member 30 to rotate at a high speed at the first speed, when the action member 30 is close to the ground, the action member 30 will apply a downward pressure to the entire roller brush body 10 due to the centrifugal force of the rotation, so that the dirt can be easily scrubbed off the ground when the roller brush body 10 scrubs the ground. At the same time, the roller brush body 10 rotates at a low speed at a lower second speed, so as to scrub the ground slowly, avoiding the phenomenon that the roller brush 100 is easy to wear due to excessive speed, thereby achieving the purpose of protecting the roller brush 100 and improving the scrubbing effect.

[0062] According to another aspect of the present application, a floor scrubber is also provided, comprising the floor brush assembly provided in the above embodiment, so that when the floor scrubber is working, the pressing force of the roller brush 100 of the floor brush assembly on the ground is significantly increased, and the dirt can be easily scrubbed off the ground, so that the floor scrubber has high cleaning efficiency and good floor scrubbing effect. At the same time, since the rotation speed of the roller brush 100 is reduced, the roller brush body 10 can be protected to avoid the phenomenon that the roller brush 100 is easy to wear due to excessive rotation speed, thereby achieving protection of the roller brush 100 and reducing costs.

[0063] Specifically, when the floor scrubber is working, the roller brush 100 of the roller brush 100 assembly is in close contact with the ground, and the main shaft 20 drives the action member 30 to rotate at a first speed and high speed until the action member 30 is close to the ground. The action member 30 will apply a downward ground pressure to the entire roller brush body 10 due to the centrifugal force of rotation, so that the dirt can be easily brushed off the ground when the roller brush body 10 scrubs the ground. Compared with simply increasing the weight of the roller brush body 10 (such as setting the roller brush body 10 to be solid, to achieve the same ground pressure, the volume needs to be made larger, such as adding a counterweight, the cost is higher), the floor scrubber provided by the present application has better cleaning effect and performance, and lower cost.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A roller brush, characterized in that: include: The roller brush body (10) is capable of rotating around its own axis, and the roller brush body (10) has a mounting cavity (11); a main shaft (20) disposed in the mounting cavity (11) and extending along the axial direction of the roller brush body (10), and the main shaft (20) is located at the axis of the roller brush body (10); and The action member (30) is mounted on the main shaft (20) and is eccentrically arranged relative to the radial direction of the roller brush body (10). The action member (30) comprises a fixed end (31) and an eccentric end (32). The fixed end (31) is sleeved on the main shaft (20). The eccentric end (32) extends in the radial direction of the roller brush body (10). The action member (30) has two opposite ends, one of which is located at the axial center of the roller brush body (10) and the other is located in the radial direction of the roller brush body (10). The centrifugal end (32) is extended, the projection of the centrifugal end (32) on the surface of the roller brush body (10) in the radial direction is in an arc shape, and the arc convex surface of the centrifugal end (32) is in contact with the cavity wall of the roller brush body (10) facing the installation cavity (11), and the arc convex surface of the centrifugal end (32) and the cavity wall of the roller brush body (10) facing the installation cavity (11) are relatively close, but not completely connected, so as to realize the rotation of the action member (30) and the roller brush body (10) at different speeds; A speed reducing device (40), wherein the main shaft (20) is transmission-connected to the roller brush body (10) via the speed reducing device (40); When the main shaft (20) is controlled to rotate at a first speed, the actuator (30) rotates synchronously with the main shaft (20), the main shaft (20) transmits the motion to the deceleration device (40), and the deceleration device (40) transmits the motion to the roller brush body (10) after deceleration, and the deceleration device (40) drives the roller brush body (10) to rotate at a second speed, and the first speed is greater than the second speed.

2. The roller brush according to claim 1, characterized in that: The roller brush (100) further comprises end cover assemblies detachably mounted on both axial ends of the roller brush body (10), the end cover assemblies being used to close the installation cavity (11); The speed reduction device (40) is transmission-connected between the end cover assembly and the main shaft (20).

3. The roller brush according to claim 2, characterized in that: The end cover assembly comprises a first end cover (51) located at one axial end of the roller brush body (10); a first transmission end (21) is formed on a side of the main shaft (20) close to the first end cover (51); and the reduction device (40) is transmission-disposed between the first transmission end (21) and the main shaft (20).

4. The roller brush according to claim 3, characterized in that: The reduction gear (40) comprises a sun gear (41) connected to the first transmission end (21), a gear ring (42) provided on the first end cover (51), and a plurality of planetary gears (43) meshed between the sun gear (41) and the gear ring (42); When the sun gear (41) rotates in a controlled manner, the main shaft (20) rotates synchronously with the sun gear (41), and the sun gear (41) drives the plurality of planetary gears (43) to revolve around the sun gear (41) while driving the gear ring (42) to rotate.

5. The roller brush according to claim 4, characterized in that: The first end cover (51) has an operating cavity (511) arranged away from the installation cavity (11), the gear ring (42) is arranged on a cavity wall of the first end cover (51) facing the operating cavity (511), and the sun gear (41) is located in the operating cavity (511).

6. The roller brush according to claim 1, characterized in that: The roller brush (100) further comprises a fastener (80), the action member (30) is detachably mounted on the main shaft (20), and the fastener (80) is used to fasten the action member (30) and the main shaft (20).

7. A floor brush assembly, characterized in that: It comprises a shell and a roller brush (100) according to any one of claims 1 to 6, wherein the roller brush (100) is assembled in the shell and rotatably connected to the shell.

8. A floor scrubber, characterized in that: The invention comprises the floor brush assembly described in claim 7.

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