Floor brush structure, cleaning device and floor washer having the same

Abstract

The present invention discloses a floor brush structure, a cleaning device and a floor washer having the same. The floor brush structure includes: a floor brush main body capable of moving on a surface to be cleaned, the forward direction of the floor brush main body being the front, and the direction opposite to the forward direction being the rear; a rolling brush rotatably provided on the floor brush main body, the rolling brush being capable of elastically deforming in its radial direction; wherein, a limiting component is provided on the floor brush main body, and the limiting component is configured to limit the elastic deformation amount of the rolling brush in its radial direction after the rolling brush contacts the environmental boundary.

Description

Technical Field

[0001] The present invention belongs to the technical field of robots, and particularly relates to a floor brush structure, a cleaning device and a floor washer having the same. Background Art

[0002] The cleaning device can autonomously complete the cleaning tasks preset by people, helping people free from heavy housework and being deeply favored by people. The roller brush of the cleaning device is used to scrape the surface to be cleaned to achieve the cleaning of the surface to be cleaned. The roller brush of the existing cleaning device is a rigid roller brush, and the rigid roller brush has the following defects when in use: 1) When encountering large-particle dirt, it cannot adaptively adjust, and the large-particle dirt will pop outwards when being inhaled; 2) The cleaning ability to reach the edge in the front is poor. Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a floor brush structure, a cleaning device and a floor washer having the same.

[0004] To solve the above technical problem, the present invention provides a floor brush structure, including: a floor brush main body capable of moving on the surface to be cleaned, the forward direction of the floor brush main body being the front, and the direction opposite to the forward direction being the rear; a roller brush rotatably arranged on the floor brush main body, the roller brush being capable of generating elastic deformation in its radial direction; wherein, a limiting component is arranged on the floor brush main body, and the limiting component is configured to limit the elastic deformation amount of the roller brush in its radial direction after the roller brush contacts the environmental boundary.

[0005] Preferably, in the floor brush structure, the limiting component includes a limiting cover arranged at the front end of the floor brush main body and above the roller brush, and a part of the roller brush is exposed on the front side of the limiting cover.

[0006] Preferably, in the floor brush structure, a clamping unit is arranged on the limiting cover, and a clamping groove cooperating with the clamping unit is arranged on the housing of the floor brush main body. The limiting cover is detachably arranged at the front end of the housing of the floor brush main body through the cooperation relationship between the clamping unit and the clamping groove.

[0007] Preferably, in the floor brush structure, a positioning unit is arranged between the limiting cover and the floor brush main body, and the positioning unit is configured to limit the position of the limiting cover on the floor brush main body in the front-rear direction;

[0008] Wherein, the positioning unit includes a positioning column and a positioning groove, and one of the positioning column and the positioning groove is arranged on the limiting cover, and the other is arranged on the floor brush main body.

[0009] Preferably, in the floor brush structure, the limiting cover includes a transparent part which extends to the front end of the floor brush body, and an illumination unit is arranged in the transparent part.

[0010] Preferably, in the floor brush structure, the limiting cover is freely floating and presses on the top of the roller brush, and it floats up and down as the deformation amount of the roller brush changes.

[0011] Preferably, in the floor brush structure, the limiting component includes a roller group rotatably arranged at the bottom of the floor brush body, and the roller group is configured to contact the surface to be cleaned.

[0012] Preferably, in the floor brush structure, the roller group includes a front wheel and a rear wheel. The front wheel is distributed at the rear side of the roller brush, and the rear wheel is distributed at the rear side of the front wheel.

[0013] Preferably, in the floor brush structure, the front wheel and the rear wheel form a supporting surface which is configured to limit the deformation amount between the roller brush and the surface to be cleaned.

[0014] Preferably, in the floor brush structure, the roller brush includes a first roller rotatably arranged on the floor brush body and a second roller sleeved on the outer periphery of the first roller. The first roller is a hard part, the second roller is an elastic body, and cleaning parts are distributed on the outer peripheral surface of the second roller;

[0015] Wherein, the roller brush has a rotation axis which is substantially perpendicular to the advancing direction of the floor brush body, and the distance between the outer circle of the first roller and the front end of the limiting cover is greater than the maximum elastic deformation amount of the second roller in the radial direction of the roller brush.

[0016] Preferably, in the floor brush structure, the second roller includes an inner ring wall, an outer ring wall located on the outer periphery of the inner ring wall, and a plurality of rib bodies connecting the inner ring wall and the outer ring wall. An annular space is formed between the inner ring wall and the outer ring wall, and the rib bodies are located in the annular space;

[0017] The rib body has a first end connected to the inner ring wall and a second end connected to the outer ring wall. The distance between the connection line of the first end and the second end is greater than the radial distance H between the inner ring wall and the outer ring wall, and the rib body extends from the first end towards the second end in a direction opposite to the rotation direction of the roller brush.

[0018] Preferably, in the floor brush structure, the hardness of the second roller ranges from 20 to 40 HB.

[0019] Preferably, for the floor brush structure, the value range of the ratio of the size of the annular space in the radial direction to the outer diameter of the roller brush is 0.08 - 0.25.

[0020] Preferably, for the floor brush structure, a shielding member is provided at the axial end of the second roller. The shielding member is configured to make the annular space a closed space. The shielding member is provided with a ventilation unit, and the ventilation unit is configured to enable the gas in the annular space to interact with the external environment and prevent the medium in the external environment from entering the annular space; wherein, the shielding member is also an elastomer.

[0021] Preferably, for the floor brush structure, the ventilation unit is a notch penetrating the shielding member along the axial direction parallel to the second roller; or,

[0022] The ventilation unit includes a through hole penetrating the shielding member along the axial direction parallel to the second roller, and a waterproof breathable film is provided at the through hole.

[0023] Preferably, for the floor brush structure, the cleaning part is a flannelette fixed on the outer peripheral surface of the second roller, and the flannelette is provided with villi.

[0024] Preferably, for the floor brush structure, the roller brush is arranged on the floor brush main body in a side-drawing manner.

[0025] Preferably, for the floor brush structure, a scraping member cooperating with the roller brush is further provided on the floor brush main body. The scraping member is located at the rear side of the roller brush and extends along the axial direction parallel to the roller brush;

[0026] Wherein, one side of the scraping member is connected to the floor brush main body, and the opposite side is a free end.

[0027] Preferably, for the floor brush structure, the distance between the free end of the scraping member and the outer circumferential surface of the second roller is less than or equal to 2 mm, and the scraping water surface formed between the free end of the scraping member and the roller brush is distributed below the rotation axis of the roller brush.

[0028] The present invention also provides a cleaning device, including the floor brush structure as described above.

[0029] The present invention further provides a floor washer, including a main body, a handle, and the floor brush structure as described above.

[0030] The technical solution provided by the present invention has the following advantages:

[0031] 1. The rotatable brush includes a first roller body, a second roller body, and a cleaning part. The second roller body is an elastomer that can deform under force. When the rotatable brush cleans large particulate dirt, due to the action of the large particulate dirt, the surface of the rotatable brush at the location of the large particulate dirt sinks, increasing the contact area between the rotatable brush and the large particulate dirt. As a result, the frictional force between the rotatable brush and the large particulate dirt is increased, which is beneficial for the rotatable brush to smoothly throw the dirt towards the suction port of the floor brush main body. That is to say, when the rotatable brush has the ability of elastic deformation, the size of the dirt that it can clean becomes larger;

[0032] 2. When the rotatable brush cleans the wall corner, the second roller body of the rotatable brush undergoes elastic deformation under the action of the wall surface, enabling the bristles on the cleaning part to extend towards the corner direction as much as possible to achieve the purpose of cleaning the corner, and having good edge-to-edge cleaning ability;

[0033] 3. The distance L between the outer circle of the first roller body and the front end of the limit cover is greater than the maximum elastic deformation amount of the second roller body in the radial direction of the rotatable brush. When the rotatable brush is pushed forward, the front end of the limit cover contacts the wall surface to limit the forward movement of the floor brush structure, thereby avoiding the occurrence of the problem of motor stalling caused by excessive extrusion between the rotatable brush and the wall surface;

[0034] 4. The direction of the rib of the second roller body is opposite to the rotation direction during the operation of the rotatable brush and is the same as the direction of the frictional force with the ground, thereby reducing the vibration amount during the elastic deformation of the rotatable brush and being able to stably transmit the torsional force to the cleaning part;

[0035] 5. The front wheel and the rear wheel form a support surface, and the support surface formed by the front wheel and the rear wheel can limit the elastic deformation amount of the second roller body within a certain range to ensure the stable deformation of the second roller body and prevent excessive elastic deformation of the second roller body from conducting vibration;

[0036] 6. The distance between the free end of the scraping member and the outer circumferential surface of the second roller body is less than or equal to 2 mm, and the scraping surface formed between the free end of the scraping member and the rotatable brush is distributed below the rotation axis of the rotatable brush. Thus, the uniformity and the amount of water stains on the ground can be ensured;

[0037] 7. A shielding member is provided at the axial end of the second roller body, and a ventilation unit is provided on the shielding member. Among them, the shielding member can make the annular space of the second roller body a closed space. When the rotatable brush rotates, it can prevent the liquid on the rotatable brush from entering the inside of the second roller body through the annular space, and can also prevent dust and particles in the external environment from entering the inside of the second roller body through the annular space; the ventilation unit can enable the gas in the annular space to interact with the external environment and prevent the medium in the external environment from entering the annular space. Description of the Drawings

[0038] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 Schematic perspective view of the floor brush structure provided by the present invention;

[0040] Figure 2 Schematic view of the floor brush structure provided by the present invention in the upward view direction;

[0041] Figure 3 Schematic cross-sectional view of the floor brush structure provided by the present invention;

[0042] Figure 4 Schematic partial exploded view of the floor brush structure provided by the present invention;

[0043] Figure 5 Schematic exploded view of the floor brush structure provided by the present invention;

[0044] Figure 6 Exploded view between the roller brush and the connecting arm assembly;

[0045] Figure 7 Schematic cross-sectional view of the roller brush;

[0046] Figure 8 Schematic view of the roller brush structure;

[0047] Figure 9 Schematic view after a shielding member is provided on the axial end of the roller brush;

[0048] Figure 10 Schematic view of the relationship between the rib and the rotation direction of the roller brush and the direction of the ground friction force;

[0049] Figure 11 Schematic view when the floor brush structure is cleaning the wall corner;

[0050] Figure 12 Schematic perspective view of the limit cover;

[0051] Figure 13 Schematic view of the positional relationship between the limit cover and the engaging unit;

[0052] Figure 14 For Figure 13 Exploded view of;

[0053] Figure 15 For Figure 3Schematic diagram of the enlarged structure of area A in the middle. Detailed implementation mode

[0054] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0055] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0056] In the present invention, unless otherwise stated, the orientation words such as "upper", "lower", "top", "bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation words do not limit the present invention.

[0057] An embodiment of the present invention provides a floor brush structure, including a floor brush main body 100 and a roller brush 200. The floor brush main body 100 can move on the surface to be cleaned. The forward direction of the floor brush main body 100 is the front, and the direction opposite to the forward direction is the rear; the roller brush 200 is rotatably arranged on the floor brush main body 100, and the roller brush 200 can generate elastic deformation in its radial direction.

[0058] The roller brush 200 can be deformed under force. When the roller brush 200 cleans larger particle dirt, under the action of the larger particle dirt, the surface of the roller brush 200 at the position of the larger particle dirt is sunken, increasing the contact area between the roller brush 200 and the larger particle dirt, thereby increasing the frictional force between the roller brush 200 and the larger particle dirt, which is beneficial to the roller brush 200 to smoothly throw the dirt towards the suction port of the floor brush main body 100; that is to say, when the roller brush 200 has the ability of elastic deformation, the size of the dirt that it can clean becomes larger.

[0059] Among them, a limiting component is arranged on the floor brush main body 100, and the limiting component is configured to limit the elastic deformation amount of the roller brush 200 in its radial direction after the roller brush 200 contacts the environmental boundary.

[0060] For example, please refer to Figures 1 to 6 As shown, the limiting component includes a roller group rotatably arranged at the bottom of the floor brush main body 100, and the roller group is configured to contact the surface to be cleaned.

[0061] The roller set includes a front wheel 120 and a rear wheel 130. The front wheel 120 is distributed at the rear side of the rotary brush 200, and the rear wheel 130 is distributed at the rear side of the front wheel 120.

[0062] The front wheel 120 and the rear wheel 130 form a support surface, and the support surface is configured to limit the deformation amount between the rotary brush 200 and the surface to be cleaned. The support surface formed by the front wheel 120 and the rear wheel 130 can make the elastic deformation amount of the rotary brush 200 within a limited range to ensure the stable deformation of the rotary brush 200 and prevent the elastic deformation amount of the rotary brush 200 from being too large and transmitting vibration to the brush structure.

[0063] When the rotary brush 200 cleans the wall corner, the rotary brush 200 undergoes elastic deformation under the action of the wall surface, which can make the fluff on the cleaning part extend towards the corner direction as much as possible to achieve the purpose of cleaning the corner, and has good cleaning ability to the edge.

[0064] For example, the limiting component includes a limiting cover 300. The limiting cover 300 can limit the elastic deformation amount between the rotary brush 200 and the wall surface. When the rotary brush 200 is further pushed forward, the front end of the limiting cover 300 contacts the wall surface to limit the further advancement of the brush structure, thereby avoiding the occurrence of the problem that the rotary brush motor is blocked due to excessive extrusion between the rotary brush 200 and the wall surface.

[0065] Please refer to Figures 1 to 6 As shown, the rotary brush 200 includes a first roller 210 rotatably arranged on the floor brush main body 100, and a second roller 220 sleeved on the outer periphery of the first roller 210. The first roller 210 is a hard part, the second roller 220 is an elastic body, and a cleaning part 230 is distributed on the outer peripheral surface of the second roller 220.

[0066] The rotary brush 200 has a rotation axis, and the rotation axis is substantially perpendicular to the advancing direction of the floor brush main body 100. The distance between the outer circle of the first roller 210 and the front end of the limiting cover 300 is greater than the maximum elastic deformation amount of the second roller 220 in the radial direction of the rotary brush 200.

[0067] The direction of the rib 223 of the second roller 220 is opposite to the rotation direction when the rotary brush 200 works and is consistent with the direction of the frictional force with the ground, thereby reducing the vibration amount during the elastic deformation of the rotary brush 200 and being able to stably transmit the torsional force to the cleaning part.

[0068] Wherein, a shielding member 224 is provided at the axial end of the second roller 220, and a ventilation unit 225 is provided on the shielding member 224. The shielding member 224 can make the annular space of the second roller 220 a closed space. When the rotary brush 200 rotates, it can prevent the liquid on the rotary brush 200 from entering the interior of the second roller 220 through the annular space, and can also prevent dust and particles in the external environment from entering the interior of the second roller 220 through the annular space. The ventilation unit 225 can enable the gas in the annular space to interact with the external environment and prevent the medium in the external environment from entering the annular space.

[0069] In another embodiment of the present invention, please refer to Figures 1 to 6 As shown, a scraping member 500 cooperating with the rotary brush 200 is provided on the floor brush main body 100. The scraping member 500 is located at the rear side of the rotary brush 200 and extends along the axial direction parallel to the rotary brush 200.

[0070] Wherein, one side of the scraping member 500 is connected to the floor brush main body 100, and the opposite side is a free end. The distance between the free end of the scraping member 500 and the outer circumferential surface of the second roller 220 is less than or equal to 2 mm, and the scraping surface formed between the free end of the scraping member 500 and the rotary brush 200 is distributed below the rotation axis of the rotary brush 200. Thus, the uniformity and the amount of water stains on the ground can be ensured.

[0071] In another embodiment of the present invention, a cleaning device is provided. The cleaning device includes a floor brush structure. The floor brush structure includes a floor brush main body 100 and a rotary brush 200. The floor brush main body 100 can move on the surface to be cleaned. The forward direction of the floor brush main body 100 is the front, and the direction opposite to the forward direction is the rear. The rotary brush 200 is rotatably arranged on the floor brush main body 100, and the rotary brush 200 can generate elastic deformation in its radial direction.

[0072] The rotary brush 200 can be deformed under force. When the rotary brush 200 cleans larger particle dirt, under the action of the larger particle dirt, the surface of the rotary brush 200 at the position of the larger particle dirt is sunken, increasing the contact area between the rotary brush 200 and the larger particle dirt, thereby increasing the frictional force between the rotary brush 200 and the larger particle dirt, which is beneficial to the rotary brush 200 to smoothly throw the dirt towards the suction port of the floor brush main body 100. That is to say, when the rotary brush 200 has the ability of elastic deformation, the size of the dirt that it can clean becomes larger.

[0073] A limiting component is provided on the floor brush main body 100. The limiting component is configured to limit the elastic deformation amount of the rotary brush 200 in its radial direction after the rotary brush 200 contacts the environmental boundary.

[0074] The limiting component includes a roller group rotatably arranged at the bottom of the floor brush main body 100, and the roller group is configured to contact the surface to be cleaned. The roller group includes a front wheel 120 and a rear wheel 130. The front wheel 120 is distributed at the rear side of the rotary brush 200, and the rear wheel 130 is distributed at the rear side of the front wheel 120. The front wheel 120 and the rear wheel 130 form a support surface, and the support surface is configured to limit the deformation amount between the rotary brush 200 and the surface to be cleaned. The support surface formed by the front wheel 120 and the rear wheel 130 can make the elastic deformation amount of the rotary brush 200 within a limited range to ensure the stable deformation of the rotary brush 200 and prevent the elastic deformation amount of the rotary brush 200 from being too large and transmitting the vibration of the floor brush structure.

[0075] When the rotary brush 200 cleans the wall corner, the rotary brush 200 undergoes elastic deformation under the action of the wall surface, which can make the fluff on the cleaning part extend towards the corner direction as much as possible to achieve the purpose of cleaning the corner, and has good cleaning ability to reach the edge.

[0076] The limiting component includes a limiting cover 300, and the limiting cover 300 can limit the elastic deformation amount between the rotary brush 200 and the wall surface. When the rotary brush 200 is further pushed forward, the front end of the limiting cover 300 contacts the wall surface to limit the floor brush structure from moving forward, thereby avoiding the occurrence of the problem of the rotary brush motor being blocked due to excessive extrusion between the rotary brush 200 and the wall surface.

[0077] The rotary brush 200 includes a first roller body 210 rotatably arranged on the floor brush main body 100, and a second roller body 220 sleeved on the outer circumference of the first roller body 210. The first roller body 210 is a hard part, and the second roller body 220 is an elastic body. The cleaning part is distributed on the outer peripheral surface of the second roller body 220. The rotary brush 200 has a rotation axis, and the rotation axis is substantially perpendicular to the advancing direction of the floor brush main body 100. The distance between the outer circle of the first roller body 210 and the front end of the limiting cover 300 is greater than the maximum elastic deformation amount of the second roller body 220 in the radial direction of the rotary brush 200.

[0078] The direction of the rib 223 of the second roller body 220 is opposite to the rotation direction when the rotary brush 200 works and is consistent with the ground friction direction, thereby reducing the vibration amount when the rotary brush 200 undergoes elastic deformation and being able to stably transmit the torsional force to the cleaning part.

[0079] A scraping member cooperating with the rotary brush 200 is arranged on the floor brush main body 100. The scraping member is located at the rear side of the rotary brush 200 and extends along the axial direction parallel to the rotary brush 200. One side of the scraping member is connected to the floor brush main body 100, and the opposite side is a free end. The distance between the free end of the scraping member and the outer circumferential surface of the second roller body 220 is less than or equal to 2 mm, and the scraping surface formed between the free end of the scraping member and the rotary brush 200 is distributed below the rotation axis of the rotary brush 200. Thus, the uniformity and the amount of water stains on the ground can be ensured.

[0080] In another embodiment of the present invention, a floor washer is provided. The floor washer includes a main body (not shown in the figure), a handle (not shown in the figure), and a floor brush structure. The main body includes a suction source (not shown in the figure), a battery (not shown in the figure), a cleaning liquid tank (not shown in the figure), and a recovery tank (not shown in the figure). The handle is used for the user to hold and control the floor washer. The floor brush structure includes a floor brush main body 100 and a roller brush 200. The floor brush main body 100 can move on the surface to be cleaned. The forward direction of the floor brush main body 100 is the front, and the direction opposite to the forward direction is the rear; the roller brush 200 is rotatably arranged on the floor brush main body 100, and the roller brush 200 can generate elastic deformation in its radial direction.

[0081] The roller brush 200 can be deformed under force. When the roller brush 200 cleans larger particle dirt, under the action of the larger particle dirt, the surface of the roller brush 200 at the position of the larger particle dirt is sunken, increasing the contact area between the roller brush200 and the larger particle dirt, thereby increasing the frictional force between the roller brush 200 and the larger particle dirt, which is beneficial for the roller brush 200 to smoothly throw the dirt towards the suction port of the floor brush main body 100; that is to say, when the roller brush 200 has the ability of elastic deformation, the size of the dirt that it can clean becomes larger.

[0082] A limiting component is provided on the floor brush main body 100. The limiting component is configured to limit the elastic deformation amount of the roller brush 200 in its radial direction after the roller brush 200 contacts the environmental boundary.

[0083] The limiting component includes a roller group rotatably arranged at the bottom of the floor brush main body 100. The roller group is configured to contact the surface to be cleaned. The roller group includes a front wheel 120 and a rear wheel 130. The front wheel 120 is distributed at the rear side of the roller brush 200, and the rear wheel 130 is distributed at the rear side of the front wheel 120. The front wheel 120 and the rear wheel 130 form a supporting surface, and the supporting surface is configured to limit the deformation amount between the roller brush 200 and the surface to be cleaned. The supporting surface formed by the front wheel 120 and the rear wheel 130 can make the elastic deformation amount of the roller brush 200 within a limited range to ensure the stable deformation of the roller brush 200 and prevent the elastic deformation amount of the roller brush 200 from being too large and transmitting the vibration of the floor brush structure.

[0084] When the roller brush 200 cleans the wall corner, the roller brush 200 undergoes elastic deformation under the action of the wall surface, which can make the fluff on the cleaning part extend towards the corner direction as much as possible to achieve the purpose of cleaning the corner, and has good front-to-edge cleaning ability.

[0085] The limiting component includes a limiting cover 300. The limiting cover 300 can limit the elastic deformation amount between the roller brush 200 and the wall surface. When the roller brush 200 is further pushed forward, the front end of the limiting cover 300 contacts the wall surface to limit the floor brush structure from moving forward, thereby avoiding the occurrence of the problem of the roller brush motor being blocked due to excessive extrusion between the roller brush 200 and the wall surface.

[0086] The rotary brush 200 includes a first roller 210 rotatably disposed on the floor brush main body 100, and a second roller 220 sleeved on the outer periphery of the first roller 210. The first roller 210 is a rigid member, the second roller 220 is an elastic body, and cleaning portions are distributed on the outer peripheral surface of the second roller 220. The rotary brush 200 has a rotation axis, the rotation axis is substantially perpendicular to the forward direction of the floor brush main body 100, and the distance between the outer circle of the first roller 210 and the front end of the limit cover 300 is greater than the maximum elastic deformation amount of the second roller 220 in the radial direction of the rotary brush 200.

[0087] The running direction of the rib 223 of the second roller 220 is opposite to the rotation direction when the rotary brush 200 works and is consistent with the ground friction direction, so as to reduce the vibration amount during the elastic deformation of the rotary brush 200 and stably transmit the torsional force to the cleaning portion.

[0088] A scraping member 500 cooperating with the rotary brush 200 is provided on the floor brush main body 100. The scraping member 500 is located at the rear side of the rotary brush 200 and extends along the axial direction parallel to the rotary brush 200. One side of the scraping member 500 is connected to the floor brush main body 100, and the opposite side is a free end. The distance between the free end of the scraping member 500 and the outer circumferential surface of the second roller 220 is less than or equal to 2 mm, and the scraping water surface formed between the free end of the scraping member 500 and the rotary brush 200 is distributed below the rotation axis of the rotary brush 200. Thus, the uniformity and the amount of water stains on the ground can be ensured.

[0089] Embodiment 1

[0090] Embodiment 1 of the present invention provides a floor brush structure for cleaning a surface to be cleaned. In an adaptable scenario, the floor brush structure is the floor brush of a floor washer. It should be noted that in the above example, the floor brush structure being the floor brush of a floor washer is only a feasible applicable scenario of the floor brush structure. In other feasible scenarios that cannot be clearly excluded, the floor brush structure can also be the floor brush of a vacuum cleaner, or the floor brush of a window cleaning machine, etc.

[0091] The following will be described mainly with the floor brush structure being used as the floor brush of a floor washer as the main scenario, and the ground is the surface to be cleaned of the floor brush structure. However, based on the above description, it can be known that the protection scope of the embodiments of the present invention is not limited thereby.

[0092] Please refer to Figures 1 to 6 As shown, the floor brush structure includes: a floor brush main body 100, and a rotary brush 200 rotatably disposed on the floor brush main body 100. Among them, the floor brush main body 100 can move on the surface to be cleaned, the forward direction of the floor brush main body 100 is the front, and the direction opposite to the forward direction is the rear.

[0093] The rotatable brush 200 is disposed at the front end of the floor brush main body 100, and the rotation axis of the rotatable brush 200 is substantially perpendicular to the forward direction of the floor brush main body 100. When the floor brush main body 100 moves forward, the rotatable brush 200 can clean the ground in front of the floor brush main body 100, thereby achieving the purpose of floor cleaning. It should be noted that in this specification, "substantially" can be understood as close to, approximate, or within a predetermined range from the target value.

[0094] In this embodiment, the rotatable brush 200 is disposed on the floor brush main body 100 in a side-drawing manner. The side-drawing installation method of the rotatable brush 200 can achieve edge cleaning, effectively improving the cleaning efficiency and cleaning effect. To achieve the side-drawing connection method, a connecting arm assembly 800 is rotatably provided at one end of the rotatable brush 200, and the rotatable brush 200 is detachably connected to the floor brush main body 100 through the connecting arm assembly 800.

[0095] Please refer to Figure 6 and Figure 7 As shown, the rotatable brush 200 includes a first roller 210 rotatably disposed on the floor brush main body 100 and a second roller 220 sleeved on the outer periphery of the first roller 210. Among them, cleaning parts 230 are distributed on the outer peripheral surface of the second roller 220.

[0096] In this embodiment, the first roller 210 is a rigid part and cannot produce elastic deformation. The first roller 210 is in transmission connection with a driving assembly 700 disposed on the floor brush main body 100. The driving assembly 700 drives the first roller 210 to rotate, and the first roller 210 drives the second roller 220 and the cleaning parts 230 to rotate synchronously.

[0097] The second roller 220 is an elastic body and can cause the rotatable brush 200 to produce elastic deformation in its radial direction under force. When the rotatable brush 200 encounters relatively large particulate dirt, under the action of the large particulate dirt, the surface of the rotatable brush 200 at the position of the large particulate dirt is recessed, increasing the contact area between the rotatable brush 200 and the large particulate dirt, and further increasing the friction force between the rotatable brush 200 and the large particulate dirt. Thus, the large particulate dirt can be smoothly thrown towards the suction port (not shown in the figure) of the floor brush main body 100 under the action of the rotatable brush. On the contrary, if the rotatable brush is a rigid rotatable brush (cannot produce deformation), when the rotatable brush encounters large particulate dirt, since the outer diameter of the large particulate dirt is relatively large and the rotatable brush cannot produce deformation, the large particulate dirt will be bounced off by the rotatable brush.

[0098] The second roller 220 is made of silica gel, and the hardness value range is 20-40 HB. For example, the hardness value of the second roller 220 can be 20 HB, 25 HB, 30 HB, 35 HB, 40 HB and other values, or it can also be an increase with 1 HB as the interval unit for the values between 20 and 40 HB. In this embodiment, the material of the second roller 220 includes but is not limited to silica gel, and can also be rubber.

[0099] For the structure of the second roller 220, please refer to Figure 8 As shown, the second roller 220 includes an inner ring wall 221, an outer ring wall 222 located on the outer periphery of the inner ring wall 221, and a plurality of ribs 223 connecting the inner ring wall 221 and the outer ring wall 222. Among them, an annular space is formed between the inner ring wall 221 and the outer ring wall 222, and the ribs 223 are located in the annular space.

[0100] The value range of the ratio of the dimension of the annular space in the radial direction of the brush roller 200 to the outer diameter of the brush roller 200 is 0.08 to 0.25. For example, the ratio can be 0.08, 0.15, 0.25, or the ratio can increase at an interval of 0.01 between 0.08 and 0.25. The purpose of keeping the ratio of the dimension of the annular space in the radial direction of the brush roller 200 to the outer diameter of the brush roller 200 within the above range is to ensure that the second roller 220 can meet the requirements of preset elastic deformation.

[0101] The rib 223 has a first end connected to the inner ring wall 221 and a second end connected to the outer ring wall 222. The distance between the first end and the second end is greater than the radial distance H between the inner ring wall 221 and the outer ring wall 222, and the rib 223 extends from the first end to the second end in a direction opposite to the rotation direction of the brush roller 200. In this embodiment, the second roller 220 is connected by an even number of ribs, such as 4 ribs, 6 ribs, 8 ribs, 10 ribs, etc., to ensure that the overall force on the second roller 220 is balanced during operation.

[0102] The above "direction opposite to the rotation direction" is the direction of the ground friction force. In the appendix Figure 10 , the hollow arrow represents the rotation direction of the brush roller 200, and the right-angle arrow represents the direction of the ground friction force. That is to say, the direction of the rib 223 is opposite to the rotation direction of the brush roller 200 during operation and is consistent with the direction of the ground friction force, thereby reducing the vibration amount during the elastic deformation of the brush roller 200 and being able to stably transmit the torsional force to the cleaning part 230.

[0103] The cleaning part 230 is a flannelette fixed on the outer peripheral surface of the second roller 220, and the flannelette is provided with fluff. Alternatively, the cleaning part 230 is a brush formed on the outer peripheral surface of the second roller 220, and the brush and the second roller 220 are made of the same material. Alternatively, the cleaning part 230 is a water-absorbing sponge fixed on the outer peripheral surface of the second roller 220. Preferably, the cleaning part 230 is a flannelette adhered to the outer peripheral surface of the second roller 220, and the length of the fluff on the flannelette is 5 to 10 mm. For example, the length of the fluff can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0104] In this embodiment, please refer toFigure 9 As shown, a shielding member 224 is provided at the axial end of the second rolling body 220. Specifically, the outer surface of the second rolling body 220 is cylindrical, and shielding members 224 are provided at both axial ends of the second rolling body 220. The shielding member 224 is also an elastic body like the second rolling body 220. Thus, the shielding member 224 will not hinder the elastic deformation of the second rolling body 220, ensuring that the second rolling body 220 has a predetermined elastic deformation ability.

[0105] The above-mentioned shielding member 224 can make the annular space of the second rolling body 220 a closed space. Thus, when the rolling brush 200 is working, it can prevent the liquid on the rolling brush 200 from entering the interior of the second rolling body 220 through the annular space, and can also prevent dust and particles in the external environment from entering the interior of the second rolling body 220 through the annular space.

[0106] Considering that it is desired for the second rolling body 220 to generate elastic deformation, if the shielding member 224 makes the annular space into a sealed environment, and the second rolling body 220 is a structure similar to a tire, it is not conducive to the elastic deformation of the second rolling body 220. To solve the above problems, in this embodiment, a ventilation unit 225 is provided on the shielding member 224, and the ventilation unit 225 is configured to enable the gas in the annular space to interact with the external environment and prevent the medium in the external environment from entering the annular space.

[0107] Regarding the structure of the ventilation unit 225, for example, the ventilation unit 225 is a notch that penetrates the shielding member 224 along the axial direction parallel to the second rolling body 220. The above-mentioned "notch" is not in an open shape, but in a slit-like structure. When the ventilation unit 225 is in an open shape, liquid and dust can enter the second rolling body 220 through the opening; only when the opening is infinitely small and appears as a linear slit from the outside can it ensure ventilation while preventing liquid and dust in the external environment from entering the second rolling body 220.

[0108] For example, the ventilation unit 225 includes through holes that penetrate the shielding member 224 along the axial direction parallel to the second rolling body 220, and a waterproof breathable membrane is provided at the through holes. Due to the existence of the waterproof breathable membrane, the through holes do not need to be made into a slit shape, and the waterproof breathable membrane effectively isolates external liquid and dust while allowing gas to flow through.

[0109] In this embodiment, it is desired that the rolling brush 200 undergoes elastic deformation under force. However, the elastic deformation generated by the rolling brush 200 needs to be controlled within a certain range. When the elastic deformation amount of the rolling brush 200 is too large, it will cause an increase in the frictional force between the rolling brush 200 and the ground or between the rolling brush 200 and other surfaces. After the frictional force increases, it will cause an increase in the current of the drive assembly 700, thereby affecting the normal operation of the drive assembly 700. Additionally, when the elastic deformation amount of the rolling brush 200 is too large, excessive extrusion between the rolling brush 200 and the ground or between the rolling brush 200 and other surfaces causes the motor of the drive assembly 700 to stall, thereby affecting the normal rotation of the rolling brush 200.

[0110] In view of this, in this embodiment, a limiting component is provided on the floor brush main body 100. The limiting component is configured to limit the elastic deformation amount of the rolling brush 200 in its radial direction after the rolling brush 200 contacts the environmental boundary. Among them, the above-mentioned "environmental boundary" can be boundaries such as the ground and the wall.

[0111] The limiting component includes a limiting cover 300 provided at the front end of the floor brush main body 100 and above the rolling brush 200, and a part of the rolling brush 200 is exposed on the front side of the limiting cover 300. In this embodiment, the limiting cover 300 is used to limit the elastic deformation amount of the rolling brush 200 in the front-rear direction.

[0112] When the floor brush structure is cleaning the wall corner, please refer to Figure 11 As shown, the second rolling body 220 of the rolling brush 200 undergoes elastic deformation under the action of the wall, which can make the bristles on the cleaning part 230 extend towards the corner direction as much as possible to achieve the purpose of cleaning the corner.

[0113] In this embodiment, the distance L between the outer circle of the first rolling body 210 and the front end of the limiting cover 300 is greater than the maximum elastic deformation amount of the second rolling body 220 in the radial direction of the rolling brush 200. When the rolling brush 200 continues to be pushed forward, the front end of the limiting cover 300 contacts the wall to limit the forward movement of the floor brush structure, thereby being able to avoid the occurrence of the problem that the rolling brush motor of the drive assembly 700 stalls due to excessive extrusion between the rolling brush 200 and the wall.

[0114] Regarding the setting method of the limiting cover 300, in one setting method, please refer to Figures 12 to 14 As shown, the position of the limiting cover 300 relative to the rolling brush 200 is relatively fixed. Specifically, a clamping unit 400 is provided on the limiting cover 300, and a clamping groove 110 cooperating with the clamping unit 400 is provided on the housing of the floor brush main body 100. The limiting cover 300 is detachably arranged at the front end of the housing of the floor brush main body 100 through the cooperation relationship between the clamping unit 400 and the clamping groove 110.

[0115] The limit cover 300 includes a cover body 310 and a decorative cover 320 provided on the cover body 310. A receiving groove 311 is recessed on the cover body 310, and the decorative cover 320 is provided at the receiving groove 311. The engaging unit 400 includes a pair of moving members 410 movably provided in the receiving groove 311 and an elastic member 420 located in the receiving groove 311. One end of the elastic member 420 abuts against the moving member 410, and the other end abuts against a rib fixedly provided in the receiving groove 311. In this embodiment, the elastic member 420 is a compression spring.

[0116] The moving member 410 includes a main body portion distributed along the extending direction of the receiving groove 311, a locking tongue 411 provided at one end of the main body portion, and a holding portion 412 provided at the other end of the main body portion. The holding portion 412 extends to the outside of the decorative cover 320, and an avoidance opening for the holding portion 412 to be exposed is provided on the decorative cover 320.

[0117] The moving member 410 has a locking position and an unlocking position. When the moving member 410 is in the locking position, the locking tongue 411 of the moving member 410 is outside the receiving groove 311 and inserted into the card slot 110. At this time, the limit cover 300 is installed on the floor brush main body 100. When an external force in the direction from the locking tongue 411 to the holding portion 412 is applied to the holding portion 412 of the moving member 410, the pair of moving members 410 approach each other, and the locking tongue 411 gradually disengages from the card slot 110. At this time, the limit cover 300 can be removed from the floor brush main body 100.

[0118] Further, a positioning unit is provided between the limit cover 300 and the floor brush main body 100. The positioning unit is configured to limit the position of the limit cover 300 on the floor brush main body 100 in the front-rear direction. In this embodiment, please refer to Figure 4 and Figure 12 As shown, the positioning unit includes a positioning column 140 and a positioning groove 312. One of the positioning column 140 and the positioning groove 312 is provided on the limit cover 300, and the other is provided on the floor brush main body 100. In this embodiment, the positioning column 140 is provided on the floor brush main body 100 and is adjacent to the card slot 110; the positioning groove 312 is provided on the lateral wall surface of the cover body 310.

[0119] The limit cover 300 has a transparent portion that extends to the front end of the floor brush main body 100. A lighting unit 900 is provided in the transparent portion, and the lighting unit 900 is used to emit visible light. The transparent portion can conduct the light emitted by the lighting unit 900, and when cleaning a narrow area with dim light, it is also possible to clearly see the area to be cleaned, which has the advantages of convenient cleaning and good-looking appearance. Among them, the above transparent portion is the cover body 310 of the limit cover 300.

[0120] The limit cover 300 can also be pressed above the roller brush 200 in a freely floating manner. The above-mentioned "freely floating manner" means that the limit cover 300 has displacement freedom in the up and down direction. That is to say, as the deformation amount of the roller brush 200 changes, the limit cover 300 can float up and down.

[0121] In this embodiment, the limit assembly further includes a roller group rotatably disposed at the bottom of the floor brush body 100. The roller group is configured to contact the surface to be cleaned, and the "surface to be cleaned" is the ground. The roller group includes a front wheel 120 and a rear wheel 130. Among them, the front wheel 120 is distributed at the rear side of the roller brush 200, and the rear wheel 130 is distributed at the rear side of the front wheel 120. The outer diameter of the front wheel 120 is smaller than the outer diameter of the rear wheel 130, and the rotation axis of the front wheel 120 is lower than the rotation axis of the rear wheel 130.

[0122] The front wheel 120 and the rear wheel 130 form a support surface, and the support surface is configured to limit the deformation amount between the roller brush 200 and the ground. When the roller brush 200 is working, the second roller 220 of the roller brush 200 undergoes elastic deformation under the action of the ground and gravity. The support surface formed by the front wheel 120 and the rear wheel 130 can make the elastic deformation amount of the second roller 220 within a limited range to ensure the stable deformation of the second roller 220 and prevent the elastic deformation amount of the second roller 220 from being too large and transmitting vibration.

[0123] In this embodiment, please refer to Figure 3 and combine with Figure 15 As shown in the figure, a scraping member 500 cooperating with the roller brush 200 is further provided on the floor brush body 100. The scraping member 500 is located at the rear side of the roller brush 200 and extends along the axial direction parallel to the roller brush 200. Among them, one side of the scraping member 500 is connected to the floor brush body 100, and the opposite side is a free end.

[0124] When the scraping member 500 scrapes water, the second roller 220 of the roller brush 200 can generate elastic deformation, and the scraping member 500 realizes constant-force water scraping, effectively improving the service life of the roller brush 200 and the scraping member 500.

[0125] When the floor brush structure is working, to ensure the uniformity and the amount of water stains on the ground, it is set that the distance between the free end of the scraping member 500 and the outer circumferential surface of the second roller 220 is less than or equal to 2 mm, and the water scraping surface formed between the free end of the scraping member 500 and the roller brush 200 is distributed below the rotation axis of the roller brush 200.

[0126] In summary, compared with the traditional rigid roller brush (a roller brush that cannot produce elastic deformation), the roller brush 200 in this embodiment can more easily suck in large particle dirt because it can produce elastic deformation. It also improves the edge cleaning ability on the front side of the roller brush 200, reduces the residual amount of water stains on the ground, and extends the service life of the roller brush 200 and the scraping member 500.

[0127] Embodiment 2

[0128] Embodiment 2 of the present invention provides a cleaning device, and the cleaning device includes a floor brush structure as in Embodiment 1.

[0129] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or variations without making creative efforts, and all should fall within the protection scope of the present invention.

Claims

1. A floor brush structure, characterized in that, Comprising: A floor brush body capable of moving on a surface to be cleaned, with the forward direction of the floor brush body being the front, and the direction opposite to the forward direction being the rear; A rolling brush rotatably arranged on the floor brush body, and the rolling brush can generate elastic deformation in its radial direction; Wherein, a limiting component is arranged on the floor brush body, and the limiting component is configured to limit the elastic deformation amount of the rolling brush in its radial direction after the rolling brush contacts the environmental boundary; Wherein, the limiting component includes a limiting cover arranged at the front end of the floor brush body and above the rolling brush, and a part of the rolling brush is exposed on the front side of the limiting cover, and the limiting cover is configured to limit the elastic deformation amount between the rolling brush and the wall surface.

2. The floor brush structure according to claim 1, characterized in that The limiting cover is provided with a clamping unit, and the housing of the floor brush body is provided with a clamping groove cooperating with the clamping unit, and the limiting cover is detachably arranged at the front end of the housing of the floor brush body through the cooperation relationship between the clamping unit and the clamping groove.

3. The floor brush structure according to claim 2, characterized in that A positioning unit is arranged between the limiting cover and the floor brush body, and the positioning unit is configured to define the position of the limiting cover on the floor brush body in the front-rear direction; Wherein, the positioning unit includes a positioning cylinder and a positioning groove, and one of the positioning cylinder and the positioning groove is arranged on the limiting cover, and the other is arranged on the floor brush body.

4. The floor brush structure according to claim 1, characterized in that The limiting cover includes a transparent part extending to the front end of the floor brush body, and wherein, a lighting unit is arranged in the transparent part.

5. The floor brush structure according to claim 1, characterized in that The limiting cover freely floats and presses above the rolling brush, and as the deformation amount of the rolling brush changes, the limiting cover floats up and down.

6. The floor brush structure according to claim 1, wherein, The limiting component includes a roller group rotatably arranged at the bottom of the floor brush body, and the roller group is configured to contact the surface to be cleaned.

7. The floor brush structure according to claim 6, characterized in that The roller group includes a front wheel and a rear wheel, the front wheels are distributed at the rear side of the rolling brush, and the rear wheels are distributed at the rear side of the front wheels.

8. The floor brush structure according to claim 7, wherein, The front wheel and the rear wheel form a supporting surface, and the supporting surface is configured to limit the deformation amount between the rolling brush and the surface to be cleaned.

9. The floor brush structure according to claim 1, characterized in that The rolling brush includes a first rolling body rotatably arranged on the floor brush body, and a second rolling body sleeved on the outer periphery of the first rolling body. The first rolling body is a hard part, the second rolling body is an elastic body, and cleaning parts are distributed on the outer peripheral surface of the second rolling body; Wherein, the rolling brush has a rotation axis, the rotation axis is substantially perpendicular to the forward direction of the floor brush body, and the distance between the outer circle of the first rolling body and the front end of the limiting cover is greater than the maximum elastic deformation amount of the second rolling body in the radial direction of the rolling brush.

10. The floor brush structure according to claim 9, characterized in that The second rolling body includes an inner ring wall, an outer ring wall located on the outer periphery of the inner ring wall, and a plurality of ribs connecting the inner ring wall and the outer ring wall. An annular space is formed between the inner ring wall and the outer ring wall, and the ribs are located in the annular space; The rib has a first end connected to the inner ring wall and a second end connected to the outer ring wall. The distance between the connection lines of the first end and the second end is greater than the radial distance H between the inner ring wall and the outer ring wall, and the rib extends from the first end towards the second end in a direction opposite to the rotation direction of the roller brush.

11. The floor brush structure according to claim 9, wherein, The hardness of the second rolling body ranges from 20 to 40 HB.

12. The floor brush structure according to claim 10, wherein The value range of the ratio of the size of the annular space in the radial direction to the outer diameter of the roller brush is 0.08 to 0.

25.

13. The floor brush structure according to claim 10, wherein A shielding member is provided at the axial end of the second rolling body. The shielding member is configured to make the annular space a closed space. The shielding member is provided with a ventilation unit, and the ventilation unit is configured to enable the gas in the annular space to interact with the external environment and prevent the medium in the external environment from entering the annular space; Wherein, the shielding member is also an elastomer.

14. The floor brush structure according to claim 13, wherein The ventilation unit is a notch penetrating the shielding member along the axial direction parallel to the second rolling body; or, The ventilation unit includes a through hole penetrating the shielding member along the axial direction parallel to the second rolling body, and a waterproof breathable film is provided at the through hole.

15. The floor brush structure according to claim 9, wherein The cleaning part is a flannel cloth fixed on the outer peripheral surface of the second rolling body, and fluff is provided on the flannel cloth.

16. The floor brush structure according to claim 9, wherein The roller brush is arranged on the floor brush main body in a side-drawing manner.

17. The floor brush structure according to claim 9, wherein A scraping member cooperating with the roller brush is further provided on the floor brush main body. The scraping member is located at the rear side of the roller brush and extends along the axial direction parallel to the roller brush; Wherein, one side of the scraping member is connected to the floor brush main body, and the opposite side is a free end.

18. The floor brush structure according to claim 17, wherein The distance between the free end of the scraping member and the outer circumferential surface of the second rolling body is less than or equal to 2 mm, and the water scraping surface formed between the free end of the scraping member and the roller brush is distributed below the rotation axis of the roller brush.

19. A cleaning device, characterized in that, It includes the floor brush structure according to any one of claims 1 to 18.

20. A floor washer, characterized in that, It includes a main body, a handle, and the floor brush structure according to any one of claims 1 to 18.

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