Cleaning floor brush

Abstract

The invention discloses a cleaning floor brush. The cleaning floor brush comprises a brush base; the brush module is installed on the brush base and located in a containing cavity, the brush module comprises a brush roller assembly capable of being driven to rotate, the brush roller assembly comprises a rotating transmission part, a brush roller and a floating supporting device arranged between the rotating transmission part and the brush roller, and the peripheral wall face of the brush roller is covered with a bristle layer capable of being wetted by liquid; the floating supporting device is constructed to allow the brush roller to move in the radial direction within a preset range relative to the rotating transmission piece, and a part of the floating supporting device is constructed to have elastic deformation capacity; the driving motor is in transmission connection with the rotary transmission part; and a wiper strip extending in the axial direction and contacting the bristle layer. According to the brush roller assembly, the brush roller can be always kept in an attached state with the scraping strip under the action of the floating supporting device; therefore, the liquid removing capacity of the scraping strip to the bristle layer is stable, and the cleaning capacity of the cleaning floor brush is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of surface cleaning, and in particular to a cleaning brush for a surface cleaning device, wherein the cleaning brush can move on the ground and clean the ground. Background Art

[0002] The surface cleaning device uses a cleaning floor brush that moves on the surface to be cleaned to clean the surface to be cleaned and recover the used cleaning liquid. The cleaning floor brush of this type of surface cleaning device is provided with a brush roller with a bristle layer that can be wetted by liquid. When the brush roller is working, the cleaning liquid is first applied to the bristle layer, and then the cleaning liquid is applied to the surface to be cleaned by the rotating brush roller; at the same time, a scraper bar that abuts against the bristle layer of the brush roller is used to remove the dirty liquid from the bristle layer, and the removed dirty liquid will be transferred to the dirty liquid recovery container of the surface cleaning device for storage through a suction motor or other means.

[0003] The liquid in the bristle layer mentioned above is removed by the friction between the scraper bar and the bristle layer; during this friction process, it is inevitable that the interference fit between the scraper bar and the bristle layer will decrease due to the wear of the bristle layer, and the decrease in the interference fit between the scraper bar and the bristle layer will directly affect the ability to remove the dirty liquid. If the dirty liquid in the bristle layer cannot be completely removed, the omitted dirty liquid will continue to remain in the bristle layer and rotate again to the surface to be cleaned together with the brush roller, which will not only contaminate the surface to be cleaned, but also make the cleaned surface wet. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a cleaning floor brush that effectively ensures a stable interference fit between a scraper strip and a bristle layer.

[0005] The present application adopts the following technical scheme: a cleaning floor brush, comprising: a brush holder; a brush module group, mounted on the brush holder and located in a accommodating cavity, the brush module group comprising a brush roller assembly that can be driven to rotate, the brush roller assembly comprising a rotating transmission member, a brush roller and a floating support device arranged between the rotating transmission member and the brush roller, the outer peripheral wall surface of the brush roller is covered with a bristle layer that can be wetted by liquid, the floating support device is constructed to allow the brush roller to move in a radial direction within a preset range relative to the rotating transmission member, and at least a part of the floating support device is constructed to have elastic deformation capability; a drive motor, the drive motor is transmission-connected to the rotating transmission member to drive the rotating transmission member to rotate around an axis; and a scraper bar, extending axially and contacting the bristle layer.

[0006] In the cleaning floor brush technical solution of the present application, the brush roller in the brush roller assembly can always be kept in close contact with the squeegee under the action of the floating support device; thereby enabling the squeegee to have a stable liquid removal ability for the brush hair layer and ensuring the cleaning ability of the cleaning floor brush.

[0007] In the above technical solution, in some specific embodiments, the rotary transmission member includes a first transmission engagement portion and a second transmission engagement portion. The first transmission engagement portion is in transmission connection with the drive motor. A third transmission engagement portion adapted to the second transmission engagement portion is provided on the brush roller. One of the second transmission engagement portion and the third transmission engagement portion includes a plurality of recessed units, and the other includes a plurality of protruding units adapted to the plurality of recessed units. The plurality of protruding units and the plurality of recessed units are configured to form a gap for the brush roller to move radially relative to the rotary transmission member after engagement.

[0008] In the above technical solution, in some specific embodiments, a flexible buffer member is provided between each of the protruding units and the corresponding recessed unit.

[0009] In the above technical solution, in some specific embodiments, the floating support device includes a support core body extending axially and a plurality of elastic units radially protruding outward from the support core body. The support core body is located inside the brush roller and is coupled to the rotary transmission member. The plurality of elastic units are circumferentially distributed and are in contact with the inner peripheral wall surface of the brush roller.

[0010] In the above technical solution, in some specific embodiments, the support core body is configured to rotate around the axis together with the rotary transmission member.

[0011] In the above technical solution, in some specific embodiments, the support core body has an outer peripheral wall surface, and the elastic unit includes an arc-shaped wall radially protruding from the outer peripheral wall surface of the support core body.

[0012] In the above technical solution, in some specific embodiments, the support core body and the plurality of elastic units are distributed on the same injection molded part.

[0013] In the above technical solution, in some specific embodiments, the length of the arc-shaped wall measured axially is the same as the length of the support core body measured axially.

[0014] In the above technical solution, in some specific embodiments, the floating support device includes a support core body extending along the axial direction and a plurality of elastic components. The plurality of elastic components are in contact with the inner peripheral wall surface of the brush roller. At least part of the elastic components are distributed in the circumferential direction and supported on the support core body. The support core body is located inside the brush roller and is coupled to the rotary transmission member.

[0015] In the above technical solution, in some specific embodiments, part of the elastic components are distributed in the circumferential direction and supported on the rotary transmission member.

[0016] In the above technical solution, in some specific embodiments, the elastic component includes a spring.

[0017] In the above technical solution, in some specific embodiments, the elastic component includes a contact head. An accommodation groove adapted to the spring is provided on the support core body. One end of the spring abuts against the groove wall of the accommodation groove, and the contact head is installed at the other end of the spring. The contact head is in contact with the inner peripheral wall surface of the brush roller.

[0018] In the above technical solution, in some specific embodiments, the contact head has a spherical head surface, and the spherical head surface is in contact with the inner peripheral wall surface of the brush roller.

[0019] In the above technical solution, in some specific embodiments, the contact head is made of an elastic material.

[0020] In the above technical solution, in some specific embodiments, the cleaning floor brush further includes: a liquid dispenser for dispensing liquid to the brush hair layer of the brush roller.

[0021] Other advantages of the technical solution of the present application will be further elaborated in the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective schematic view of a cleaning floor brush according to an embodiment provided by the present application; Figure 2 is Figure 1 a top view schematic view of the cleaning floor brush; Figure 3 is Figure 1 a partially exploded schematic view of the cleaning floor brush; Figure 4 is a schematic view of a brush roller assembly and a drive motor coupled according to an embodiment provided by the present application; Figure 5 is an exploded schematic view of a brush roller assembly according to an embodiment provided by the present application; Figure 6 isFigure 2 Schematic diagram of a partial sectional view along the A-A direction; Figure 7 is Figure 2 Schematic diagram of a partial sectional view along the B-B direction; Figure 8 Schematic diagram of the joint between the rotary drive member and the brush roller when the brush roller assembly provided by the present application is installed on the brush holder as a brand-new component; Figure 9 Schematic diagram of the joint among the rotary drive member, the floating support device, and the brush roller when the brush roller assembly provided by the present application is installed on the brush holder as a brand-new component; Figure 10 is Figure 8 Schematic diagram of the joint between the rotary drive member and the brush roller after the bristles layer of the brush roller assembly in Figure 11 is Figure 9 Schematic diagram of the joint among the rotary drive member, the floating support device, and the brush roller after the bristles layer of the brush roller assembly in Figure 12 Top view schematic diagram of another embodiment of the cleaning floor brush provided by the present application; Figure 13 Three-dimensional schematic diagram of another embodiment of the brush roller assembly provided by the present application; Figure 14 is Figure 13 Exploded schematic diagram of the brush roller assembly shown; Figure 15 is Figure 12 Schematic diagram of a partial sectional view along the C-C direction; Figure 16 is Figure 12 Schematic diagram of a partial sectional view along the D-D direction. Detailed implementation manners

[0023] The technical solutions of the present application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0024] Refer to Figure 1 and Figure 2 , which shows a cleaning floor brush 100 for a surface cleaning device. The cleaning floor brush 100 can be pushed to move on the surface to be cleaned and complete the cleaning of the surface and the recycling of the used cleaning liquid. The surface cleaning device applicable to the cleaning floor brush 100 can be a vacuum suction type surface cleaning device with a suction motor and a waste liquid recovery container, but is not limited to this type of surface cleaning device.

[0025] The cleaning brush 100 includes a brush base 10 with moving wheels 11 mounted at the rear, a brush module 20 mounted at the front of the brush base 10, and an upper cover 30 mounted at the front of the brush base 1 and covering above the brush module 20. The upper cover 30 is usually detachably mounted at the front of the brush base 10 so as to remove the brush module 20 from the brush base 10.

[0026] See Figure 3 , a receiving cavity 12 is formed at the front of the brush base 10. A rotary coupling head 13 is provided at one side of the receiving cavity 12, and the other end is an open end. The rotary coupling head 13 will be in transmission connection with a driving motor 40 (see Figure 4 ) located in the brush base 1. The brush module 20 can be a pre-assembled module, which can be installed at the receiving cavity 12 in an integral form.

[0027] The brush module 20 includes a brush roller assembly 2, side brushes 3, and a support base 4. The brush roller assembly 2 and the side brushes 3 are rotatably installed on the inner and outer sides of the support base 4. In some embodiments, both the brush roller assembly 2 and the side brushes 3 can be individually removed from the support base 3. The support base 4 can be operably locked to the front of the brush base 10. A rotatable rotary engagement head 4 is provided on the support base 4. One end of the brush roller assembly 2 is fixedly engaged with the inner end of the rotary engagement head 41. The side brushes 3 are fixedly engaged with the outer end of the rotary engagement head 41.

[0028] A scraping strip 5 and a liquid dispenser 6 are provided at the rear of the receiving cavity 12. In some embodiments of the present application, the scraping strip 5 is fixedly installed on the brush base 10 and extends axially. The liquid dispenser 6 is located above the scraping strip 5 and includes a plurality of liquid outlet holes 61 distributed axially. In other embodiments, the scraping strip can also be installed on the inner wall of the upper cover.

[0029] After the brush module 20 is installed in the receiving cavity 12, the support base 4 is locked together with the front part of the seat body 10, and the other end of the brush roller assembly 2 is connected to the rotary coupling head 13; the scraping strip 5 abuts against the brush roller assembly 2, and the liquid outlet holes 61 are adjacent to the brush roller assembly 2.

[0030] See Figure 4 , driven by the driving motor 40, the brush roller assembly 2 and the side brushes 3 will be able to rotate relative to the support base 4 around the axis X1 and continuously rub against the scraping strip 5, and the liquid sprayed from the liquid outlet holes 61 will be directly applied to the brush roller assembly 2.

[0031] See Figure 5, the brush roll assembly 2 includes a rotary transmission member 21, a brush roll 22, and a floating support device 23 disposed between the rotary transmission member 21 and the brush roll 22. The rotary transmission member 21 can transmit the rotational torque of the rotary joint 13 to the brush roll assembly 2. The rotary transmission member 21 rotates about the axis X1 driven by the rotary joint 13. The brush roll 22 exists as a component capable of frictional contact with the surface to be cleaned. The floating support device 23 can support the brush roll 22 while allowing the brush roll 22 to have a certain degree of freedom relative to the rotary transmission member 21.

[0032] The rotary transmission member 21 includes a transmission engagement portion 211 at the outer side, and transmission engagement portions 212 and 213 at the inner side. The transmission engagement portion 211 is configured to be adapted to the shape of the rotary joint 13. When the transmission engagement portion 211 is coupled to the rotary joint 13, it can transmit the power of the drive motor 40 to the rotary transmission member 21, so that the rotary transmission member 21 rotates about the axis X1. In some embodiments of the present application, the transmission engagement portion 212 includes a plurality of recessed units 2121; the transmission engagement portion 213 includes a plurality of protruding units 2131.

[0033] The brush roll 22 is a hollow cylindrical member and defines an axis X2. The brush roll 22 has an outer peripheral wall surface 221 and an inner peripheral wall surface 222, and a brush hair layer 223 capable of being wetted by liquid is covered on the outer peripheral wall surface 221. A transmission engagement portion 224 adapted to the transmission engagement portion 212 is provided on the brush roll 22. In some embodiments of the present application, the transmission engagement portion 224 includes a plurality of protruding units 2241 provided on the inner peripheral wall surface 222 of the brush roll 22.

[0034] The dimensional relationship between the plurality of protruding units 2241 and the plurality of recessed units 2121 is such that after they are assembled with each other, a gap 225 can be formed therebetween (see Figure 6 ).

[0035] In order to make the movement of the brush roll 22 relative to the rotary transmission member 21 smoother, a flexible buffer member 24 is provided between each protruding unit 2241 and the corresponding recessed unit 2121. In some embodiments of the present application, the flexible buffer member 24 can be provided as a bushing and sleeved in the corresponding recessed unit 2121.

[0036] The floating support device 23 includes a support core 231 extending axially. The support core 231 is also a hollow member and has an outer peripheral wall surface 2311 and an inner side wall surface 2312. A transmission engagement portion 2313 is provided on the support core 231. In some embodiments of the present application, the transmission connection portion 2313 includes a plurality of recessed units 2314 provided on the inner peripheral wall surface 2312 of the support core 231. Most of the support core 231 will be located inside the brush roll 22 and play a role in radially supporting the brush roll 22.

[0037] In some embodiments of the present application, the transmission engaging portion 2313 is configured to be capable of being in transmission connection with the transmission engaging portion 213 of the rotary transmission member 21 through an intermediate connecting member 25. The intermediate connecting member 25 is a hollow cylindrical member and includes a plurality of outer protruding units 251 and a plurality of inner recessed units 252.

[0038] See Figure 7 , a plurality of outer protruding units 25 are engaged with a plurality of recessed units 2314 of the transmission engaging portion 2313, and a plurality of inner recessed units 252 are combined with a plurality of protruding units 2131 of the transmission engaging portion 213. In some embodiments of the present application, with the aid of the intermediate connecting member 25, the support core 231 will be able to be fixedly engaged with the rotary transmission member 21; the support core 231 thus rotates around the same axis X1 together with the rotary transmission member 21.

[0039] Continuing as Figure 5 shown, a plurality of elastic units 232 radially protruding outward are provided on the outer peripheral wall surface 2311 of the support core 231.

[0040] In some embodiments of the present application, the elastic unit 232 is composed of an arc-shaped wall radially protruding from the outer peripheral wall surface 2311 of the support core 231, and the length of the arc-shaped wall measured along the axial direction is the same as the length of the support core 231 measured along the axial direction.

[0041] In some embodiments of the present application, the support core 231 and the plurality of elastic units 232 are distributed on the same injection-molded part. A circular retaining wall 233 is further provided at one end of the injection-molded part; when the support core 231 and the brush roller 22 are assembled, the circular retaining wall 233 blocks the outside of one end of the brush roller 22 and a sealing ring 26 is provided therebetween. Similarly, the rotary transmission member 21 also has a circular retaining wall 214; when the rotary transmission member 21, the support core 231, and the brush roller 22 are assembled, the circular retaining wall 217 blocks the outside of the other end of the brush roller 22 and a sealing ring 27 is provided therebetween.

[0042] See Figure 6 , the clearance 225 formed after the engagement of a plurality of protruding units 2241 and a plurality of recessed units 2121 is set to be able to satisfy that the brush roller 22 can move in the radial direction within a preset limited range relative to the rotary transmission member 21 while ensuring the transmission rotation torque.

[0043] See Figure 7, a plurality of elastic units 232 are in contact with the inner peripheral wall surface 222 of the brush roller 22. When the acting force of the scraping strip 5 on the brush hair layer 223 becomes smaller, the elastic units 232 generate elastic deformation to counteract the acting force. During the process of generating elastic deformation, the brush roller 22 will be driven to move radially relative to the support core 231 within a limited range; through this movement, the interference fit amount between the brush hair layer 223 of the brush roller 22 and the scraping strip 5 can be restored to the previous value, so as to meet the requirement of scraping off the waste liquid from the brush hair layer 223.

[0044] See Figures 8 - 9 , when the brush roller assembly 2 starts to be used as a brand-new component, at this time, due to the relatively thick thickness of the brush hair layer 232, under the acting force of the scraping strip 5, a plurality of elastic units 232 close to the scraping strip 5 are compressed to a greater extent, and the axis line X2 of the brush roller 22 is offset toward the side away from the scraping strip 5, and the axis line X2 of the brush roller 22 is far from the axis line X1 of the rotary transmission member 21; at this time, the size of the gap 225 on the side away from the scraping strip 5 will be significantly larger than the size of the gap 225 on the side close to the scraping strip 5.

[0045] See Figures 10 - 11 , after the brush roller assembly 2 has been used for a period of time, due to the thinning of the thickness of the brush hair layer 232, the acting force of the scraping strip 5 on the brush hair layer 232 becomes smaller, and the compression degree of a plurality of elastic units 232 close to the scraping strip 5 is significantly reduced. The brush roller 22 is shifted toward the side close to the scraping strip 5 so that its axis line X2 is offset, and the axis line X2 of the brush roller 22 is almost coincident with the axis line X1 of the rotary transmission member 21; at this time, the size of the gap 225 on the side away from the scraping strip 5 will be basically the same as the size of the gap 225 on the side close to the scraping strip 5.

[0046] Therefore, due to the above structure of the brush roller assembly 2, when designing the brush roller assembly 2 at the beginning, the designer can consider pre-applying a certain amount of elastic deformation to the plurality of elastic units 232, and the pre-applied elastic deformation amount is consistent with the size of the gap, so that the brush roller 22 moves radially relative to the rotary transmission member 21 within a preset range; for the preset range here, the designer can set it according to the maximum allowable change range of the thickness of the brush hair layer. In this way, after the brush hair layer 223 is worn and thinned or collapses, the plurality of elastic units 232 can push the brush roller 22 to move radially relative to the support core 231 toward the side close to the scraping strip 5 through the reset acting force, so that the brush hair layer 223 and the scraping strip 5 can always maintain a suitable interference fit degree.

[0047] See Figures 12 - 16, which shows the cleaning floor brush 200 of another embodiment. Another structural type of brush roller assembly 8 is configured on the cleaning floor brush 200. The brush roller assembly 8 can be driven to rotate around the axis line X3. On the cleaning floor brush 200, except for the brush roller assembly 8, the rest is similar to the structure of the above-mentioned cleaning floor brush 100 and will not be elaborated here.

[0048] See Figure 14 , the brush roller assembly 8 includes a rotary transmission member 81, a brush roller 82, and a floating support device 83 disposed between the rotary transmission member 81 and the brush roller 82. Similarly, the floating support device 83 can also allow the brush roller 22 to have a certain degree of freedom relative to the rotary transmission member 81 while supporting the brush roller 82.

[0049] The rotary transmission member 81 includes a transmission engagement portion 811 at the outer side portion, and transmission engagement portions 812 and 813 at the inner side portion. The transmission engagement portion 811 will be connected to a rotary joint (not shown in the figure) to realize the transmission of the power of the drive motor to the rotary transmission member 81.

[0050] In some embodiments of the present application, the transmission engagement portion 812 includes a plurality of recessed units 8121; the transmission engagement portion 813 includes a plurality of protruding units 8131.

[0051] The brush roller 82 is a hollow cylindrical member and defines an axis line X4. The brush roller 82 has an outer peripheral wall surface 821 and an inner peripheral wall surface 822, and a brush hair layer 823 that can be wetted by liquid is covered on the outer peripheral wall surface 821. A transmission engagement portion 824 adapted to the transmission engagement portion 812 is provided on the brush roller 82. In some embodiments of the present application, the transmission engagement portion 824 includes a plurality of protruding units 8241 provided on the inner peripheral wall surface 822 of the brush roller 82.

[0052] The dimensional relationship between the plurality of protruding units 8241 and the plurality of recessed units 8121 satisfies that after the two are assembled with each other, a gap 825 can be formed therebetween (see Figure 15 ).

[0053] Continue as Figure 14 shown, in order to make the movement of the brush roller 82 relative to the rotary transmission member 81 smoother, a flexible buffer 84 is provided between each protruding unit 8241 and the corresponding recessed unit 8221. In some embodiments of the present application, the flexible buffer 84 can be a flexible sleeve sleeved on the corresponding protruding unit 8241.

[0054] The floating support device 83 includes a support core 831 extending axially. The support core 831 is also a hollow component and has an outer peripheral wall surface 8311 and an inner wall surface 8312. A transmission engagement portion 8313 is provided on the support core 831. In some embodiments of the present application, the transmission connection portion 8313 includes a plurality of recessed units 8314 provided on the inner peripheral wall surface 8312 of the support core 831. Most of the support core 831 will be located inside the brush roller 82 and play a role in radially supporting the brush roller 82.

[0055] The transmission engagement portion 8313 is configured to be able to achieve transmission connection with the transmission engagement portion 813 of the rotary transmission member 81 through an intermediate connection member 85. The intermediate connection member 85 is a hollow cylindrical component and includes a plurality of outer protruding units 851 and a plurality of inner recessed units 852.

[0056] The plurality of outer protruding units 851 are configured to be able to engage with the plurality of recessed units 8314 of the transmission engagement portion 8313, and the plurality of inner recessed units 852 are configured to be able to combine with the plurality of protruding units 8131 of the transmission engagement portion 813. In some embodiments of the present application, with the help of the intermediate connection member 85, the support core 831 will be able to achieve fixed engagement with the rotary transmission member 81; the support core 831 thus rotates around the same axis X3 together with the rotary transmission member 81.

[0057] In some embodiments of the present application, a set of receiving grooves 834 are provided on both the outer peripheral wall surface 2311 of the support core 831 and the outer peripheral wall surface of the rotary transmission member 81. Each set of receiving grooves 834 includes 3 receiving grooves 834 distributed circumferentially. An elastic component 832 is installed in each receiving groove 834. In this example, the elastic component 832 includes a spring 8321 and a contact head 8322. The contact head 8322 can be made of an elastic material and is configured to have a spherical head surface. One end of the spring 8321 abuts against the groove wall of the receiving groove 8321, and the contact head 8322 is installed at the other end of the spring 8321. The spherical head surface of the contact head 8322 contacts the inner peripheral wall surface 822 of the brush roller 82.

[0058] In other embodiments, several more sets of receiving grooves and elastic components can also be designed; or other types of elastic components can be used.

[0059] In some embodiments of the present application, a circular retaining wall 833 is further provided at one end of the support core 831; when the support core 831 is assembled with the brush roller 82, the circular retaining wall 833 blocks the outside of one end of the brush roller 82 and a sealing ring 86 is provided between them. Similarly, the rotary transmission member 81 also has a circular retaining wall 814; when the rotary transmission member 81 is assembled with the support core 831 and the brush roller 82, the circular retaining wall 817 blocks the outside of the other end of the brush roller 82 and a sealing ring 87 is provided between them.

[0060] See Figure 15 , the gap 825 formed after the engagement of the plurality of convex units 8241 and the plurality of concave units 8121 will be able to satisfy that the brush roller 82 can move in the radial direction within a limited range relative to the rotary transmission member 81.

[0061] See Figure 16 , the contact heads 8322 of the plurality of elastic components 832 are in contact with the inner peripheral wall surface 222 of the brush roller 82. When the deformation amount of the spring 8321 of the elastic component 832 changes, the brush roller 82 will be pushed to move in the radial direction within a limited range relative to the support core 831; through this movement, the brush hair layer 823 of the brush roller 82 and the squeegee 9 can always maintain an appropriate interference amount, so as to meet the requirement of scraping off the waste liquid from the brush hair layer 823.

[0062] Therefore, due to the above structure of the brush roller assembly 8, when the designer designs the brush roller assembly 8 at the beginning, a certain spring pre-tightening force can be considered to be pre-applied to the springs 8321 of the plurality of elastic components 832; in this way, after the brush hair layer 823 is worn or collapses, the plurality of elastic components 832 can push the brush roller 82 to move radially relative to the support core 831 by gradually resetting and relying on the reset force, so that the brush hair layer 823 and the squeegee 9 can always maintain an appropriate interference fit range.

[0063] In other embodiments, the floating support device can also adopt other structural solutions, and the core is that the floating support device is configured to allow the brush roller to move in the radial direction within a preset range relative to the rotary transmission member; in this way, when the brush hair layer of the brush roller becomes thinner, the elastic element in the floating support device can push the brush roller towards the side where the squeegee is located by relying on the reset force generated by resetting, so that the squeegee always adheres tightly to the brush hair layer of the brush roller.

[0064] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection required by the present application is defined by the appended claims, the specification and their equivalents.

Claims

1. A cleaning brush, characterized in that: include: Brush seat; A brush module group, mounted on the brush holder and located in an accommodating cavity, the brush module group includes a brush roller assembly that can be driven to rotate, the brush roller assembly includes a rotating transmission member, a brush roller, and a floating support device arranged between the rotating transmission member and the brush roller, the outer peripheral wall surface of the brush roller is covered with a bristle layer that can be wetted by liquid, the floating support device is configured to allow the brush roller to move in a radial direction within a preset range relative to the rotating transmission member, and at least a part of the floating support device is configured to have elastic deformation capability; A driving motor, wherein the driving motor is in driving connection with the rotating transmission member to drive the rotating transmission member to rotate around an axis; as well as A scraper strip extends axially and contacts the bristle layer.

2. The cleaning brush according to claim 1, characterized in that: The rotating transmission member includes a first transmission engaging portion and a second transmission engaging portion, the first transmission engaging portion is in transmission connection with the driving motor, the brush roller is provided with a third transmission engaging portion adapted to the second transmission engaging portion, one of the second transmission engaging portion and the third transmission engaging portion includes a plurality of recessed units, and the other includes a plurality of protruding units adapted to the plurality of recessed units, the plurality of protruding units and the plurality of recessed units are constructed to form a gap for the brush roller to move in a radial direction relative to the rotating transmission member after engagement.

3. The cleaning brush according to claim 2, characterized in that: A flexible buffer is arranged between each of the protruding units and the corresponding recessed unit.

4. The cleaning floor brush according to claim 1 or 2, characterized in that: The floating support device includes a support core extending axially and a plurality of elastic units extending radially outward from the support core. The support core is located on the inner side of the brush roller and is connected to the rotating transmission member. The plurality of elastic units are distributed in the circumferential direction and are in contact with the inner circumferential wall of the brush roller.

5. The cleaning brush according to claim 4, characterized in that: The support core is configured to rotate around the axis together with the rotating transmission member.

6. The cleaning brush according to claim 4, characterized in that: The support core has an outer peripheral wall surface, and the elastic unit includes an arc-shaped wall radially extending from the outer peripheral wall surface of the support core.

7. The cleaning brush according to claim 6, characterized in that: The supporting core and the plurality of elastic units are distributed on the same injection molded component.

8. The cleaning brush according to claim 6, characterized in that: The length of the arc-shaped wall measured along the axial direction is consistent with the length of the support core measured along the axial direction.

9. The cleaning floor brush according to claim 1 or 2, characterized in that: The floating support device includes a support core extending axially and a plurality of elastic components, wherein the plurality of elastic components are in contact with the inner circumferential wall of the brush roller, and at least part of the elastic components are distributed in the circumferential direction and supported on the support core, and the support core is located on the inner side of the brush roller and is connected to the rotating transmission member.

10. The cleaning brush according to claim 9, characterized in that: Some of the elastic components are distributed along the circumferential direction and supported on the rotating transmission member.

11. The cleaning floor brush according to claim 9, characterized in that: The elastic component comprises a spring.

12. The cleaning brush according to claim 11, characterized in that: The elastic component includes a contact head, and a receiving groove adapted to the spring is provided on the support core, one end of the spring abuts against the groove wall of the receiving groove, and the contact head is installed to the other end of the spring, and the contact head contacts the inner circumferential wall surface of the brush roller.

13. The cleaning brush according to claim 12, characterized in that: The contact head has a ball head surface, and the ball head surface contacts the inner peripheral wall surface of the brush roller.

14. The cleaning brush according to claim 12, characterized in that: The contact head is made of elastic material.

15. The cleaning floor brush according to claim 1, characterized in that: Also includes: A liquid distributor is used for distributing liquid to the bristle layer of the brush roller.

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