CN218635915U - Rolling brush driving mechanism and floor brush - Google Patents

Abstract

The utility model provides a round brush actuating mechanism and scrubbing brush, round brush actuating mechanism is including the motor element that the transmission connects in proper order, planet wheel subassembly and drive assembly, and drive assembly is including the input gear that the transmission connects in proper order, drive gear and output gear, and drive gear is transmission duplicate gear, including setting up transmission helical gear and transmission straight-teeth gear side by side, input gear's one end is the cylinder helical gear, and input gear deviates from the one end of cylinder helical gear and is connected with planet wheel subassembly transmission, and the cylinder helical gear is connected with transmission helical gear meshing and transmission, and the transmission straight-teeth gear is connected with output gear transmission. Compared with the prior art, the utility model discloses a round brush actuating mechanism passes through cylinder helical gear and transmission helical gear meshing through input gear and drive gear among the setting transmission assembly, has solved the driven stationarity of current round brush actuating mechanism not enough, the problem that the noise is high.

Description

Rolling brush driving mechanism and floor brush

Technical Field

The utility model relates to a round brush actuating mechanism and scrubbing brush belongs to the cleaning device field.

Background

Floor washers are currently a common household cleaning appliance, and are especially preferred by users because they are powered by batteries and are not tied to a power cord when in use.

Along with the development of floor cleaning machine products, a plurality of products with more perfect functions are produced, a floor brush is an important composition structure of the floor cleaning machine, the floor brush with a single rolling brush and a double rolling brush is produced at present, the functions are more and more diversified, the floor cleaning machine can integrate dust collection and floor cleaning, the functions of self cleaning and the like of the rolling brush can be realized after cleaning, and the problem that a household mops the floor is solved.

The prior floor washing machine is divided into an internal mechanism and an external mechanism by the technology of a rolling brush driving mechanism on a floor brush, and adopts a multi-stage planetary reducing mechanism matched with a synchronous belt for transmission. In the existing design, a built-in mechanism is often driven by two ground brush motor components, and the motor components and the gear box are coated inside the rolling brush, so that heat dissipation is not convenient. The external mechanism can realize double output, one motor assembly can drive two or four rolling brushes, but if the synchronous belt mechanism is used, the synchronous belt is taken as the last level, the synchronous belt is easy to wear when the load is large, and meanwhile, the transmission process is not stable enough and is accompanied by noise.

Accordingly, there is a need to provide a roller brush driving mechanism and a floor brush to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a round brush actuating mechanism and scrubbing brush to it is not enough to solve the driven stationarity of current round brush actuating mechanism, and the problem that the noise is high.

For realizing the above-mentioned purpose, the utility model provides a round brush actuating mechanism, including motor element, planet wheel subassembly and the drive assembly that the transmission connects in proper order, drive assembly is including input gear, drive gear and the output gear that the transmission connects in proper order, drive gear is transmission duplicate gear, including the transmission helical gear and the transmission straight-teeth gear that set up side by side, input gear's one end is the cylinder helical gear, input gear deviates from the one end of cylinder helical gear with planet wheel subassembly transmission is connected, the cylinder helical gear with transmission helical gear meshing and transmission are connected, the transmission straight-teeth gear with the output gear transmission is connected.

As a further improvement, the input gear deviates from the one end of cylinder helical gear is equipped with special-shaped portion, drive assembly passes through special-shaped portion with the planet wheel subassembly transmission is connected.

As a further improvement, the transmission assembly further comprises an idler wheel, the idler wheel is arranged between the transmission gear and the output gear and is connected with the transmission gear and the output gear in a meshed mode.

As a further improvement, the transmission assembly is connected through the transmission in proper order the input gear drive gear the idler reaches the output gear full gear connects, the transmission straight-teeth gear the idler reaches output gear's rotational speed reduces in proper order.

As a further improvement of the utility model, the planet wheel subassembly includes sun gear, planet carrier and planet wheel, the sun gear sets up on motor element's the output shaft, the planet wheel with sun gear meshing and transmission are connected, just the planet wheel pass through the planet gear axle with planet carrier fixed connection.

As a further improvement of the utility model, the planet wheel subassembly includes planet wheel base and the ring gear that the block is connected, the planet wheel with the sun gear sets up in the ring gear, just the planet wheel with the ring gear meshing is connected, the ring gear orientation one side of planet wheel base is equipped with first block portion, the planet wheel base corresponds the position of first block portion is equipped with second block portion, the ring gear passes through first block portion with the spacing fixing of second block portion is in the planet wheel base.

As a further improvement, the transmission assembly includes a transmission box assembly, the input gear the transmission gear, the idler reach the output gear all sets up in the transmission box assembly, the transmission box assembly includes transmission box and transmission lid, the transmission box includes butt portion, transmission gear sets up in the butt portion.

As a further improvement, the transmission assembly comprises an elastic part, a side hole is formed in the transmission box body, the elastic part is installed in the side hole, and the transmission box assembly is damped.

The utility model also provides a round brush, including scrubbing brush base, round brush and the arbitrary round brush actuating mechanism of the aforesaid, the round brush sets up one side of cleaning surface is treated towards the scrubbing brush base, and with treat the cleaning surface contact, the round brush actuating mechanism is installed in the scrubbing brush base, and at least part is located the outside of scrubbing brush base, with the round brush transmission is connected, does the round brush provides power.

As a further improvement, the last joint spare that is equipped with of round brush actuating mechanism, the one end of joint spare is spacing to be fixed on round brush actuating mechanism's output gear, the other end with the third joint portion joint of round brush is configured to the realization round brush actuating mechanism with the transmission of round brush is connected.

The utility model has the advantages that: compared with the prior art, the utility model discloses a round brush actuating mechanism passes through cylinder helical gear and the meshing of transmission helical gear through input gear and drive gear among the setting drive assembly, and it is not enough to have solved the driven stationarity of current round brush actuating mechanism, problem that the noise is high.

Drawings

Fig. 1 is a perspective view of a roller brush driving mechanism according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of the motor assembly of fig. 1.

FIG. 3 is an exploded view of the planet wheel assembly of FIG. 1.

Fig. 4 is a perspective view of the planetary base of fig. 3.

Fig. 5 is a perspective view of the ring gear of fig. 3.

Fig. 6 is a perspective view of the carrier of fig. 3.

Fig. 7 is an exploded view of the transmission assembly of fig. 1.

Fig. 8 is a perspective view of the transmission housing of fig. 7.

Fig. 9 is a perspective view of the drive cap of fig. 7.

Fig. 10 is a perspective view of the input gear of fig. 7.

Fig. 11 is a perspective view of the drive gear of fig. 7.

Fig. 12 is a perspective view of the idler of fig. 7.

Fig. 13 is a perspective view of the output gear of fig. 7.

Fig. 14 is a perspective view of the clip of fig. 7.

Fig. 15 is an exploded view of the floor brush according to the preferred embodiment of the present invention.

Fig. 16 is a perspective view of the roll brush of fig. 15.

Fig. 17 is a partially enlarged view of fig. 16.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is described in detail with reference to the accompanying drawings and specific embodiments.

In order to avoid obscuring the present invention with unnecessary details, it should be noted that only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Please refer to fig. 1, the utility model provides a round brush actuating mechanism 100, including motor element 1, planet wheel subassembly 2 and transmission assembly 3, motor element 1 is connected with planet wheel subassembly 2 transmission, and planet wheel subassembly 2 is connected with transmission assembly 3 transmission, and round brush actuating mechanism 100 is used for passing through planet wheel subassembly 2 and transmission assembly 3 transmission to the round brush 202 with motor element 1's kinetic energy on to the drive round brush 202 rotates.

Referring to fig. 2, the motor assembly 1 includes a motor sheath 11 and a motor 12, and the motor assembly 1 is used for providing kinetic energy for the roller brush driving mechanism 100. The motor sheath 11 is sleeved outside the motor 12 and used for protecting the motor 12. The motor 12 includes an output shaft 121, the motor 12 has a high rotation speed, and the output shaft 121 is disposed at one end of the motor 12 for outputting kinetic energy.

Referring to fig. 3, the planetary gear assembly 2 includes a planetary gear base 21, an annular gear 22, a sun gear 23, a planetary gear 24, a planetary gear shaft 25, a planet carrier 26, and a planet carrier spacer 27. The planet wheel component 2 is in transmission connection with the motor component 1 and is in transmission connection with the transmission component 3, and is configured to reduce the rotating speed of the motor component 1 and transmit the rotating speed to the transmission component 3.

Referring to fig. 4 to 6, the planet wheel base 21 includes a first engaging portion 211 and a first connecting hole 212, the planet wheel base 21 is disposed at an end of the motor 12 where the output shaft 121 is disposed, and is fixed on the motor 12 through a fastening member, so as to fixedly connect the planet wheel assembly 2 and the motor assembly 1. And the output shaft 121 passes through the planetary gear base 21 and is at least partially received in the planetary gear base 21. The first clamping portion 211 is arranged on the inner side of the planet wheel base 21, the inner gear ring 22 is annular, teeth meshed with the planet wheels 24 are arranged inside the inner gear ring 22, the second clamping portion 221 is arranged outside the inner gear ring 22, and the inner gear ring 22 is clamped into the first clamping portion 211 of the planet wheel base 21 through the second clamping portion 221, so that the planet wheel base 21 is fixedly connected with the inner gear ring 22. In the embodiment of the present application, the first engaging portion 211 is a concave portion provided inside the planetary gear base 21, and the second engaging portion 221 is a convex portion provided outside the ring gear 22. The central rotational axis of the ring gear 22 is located on the same straight line as the output shaft 121. The first connection hole 212 is used to connect with the first fixing portion 3112 of the transmission case 311 through a fastener, thereby realizing the fixed connection of the planetary wheel assembly 2 and the transmission assembly 3.

The sun gear 23 is press-fitted on the output shaft 121 of the motor assembly 1 extending into the planetary gear base 21, and is used for transmitting the rotation of the motor assembly 1 to the planetary gear assembly 2. The sun gear 23 is disposed at the center of the ring gear 22. The planetary gears 24 are provided between and mesh with the ring gear 22 and the sun gear 23. In the embodiment of the present application, the planetary gears 24 are provided in total in three, and are arranged at equal intervals circumferentially around the sun gear 23. The three planet wheels 24 are in mesh and in driving connection with the sun wheel 23, and the planet wheels 24 are fixedly connected with a planet carrier 26 through planet wheel shafts 25. When the motor 12 rotates, the output shaft 121 rotates along with the output shaft to drive the sun gear 23 pressed on the output shaft 121 to rotate, the sun gear 23 drives the meshed planet gears 24 to rotate, the planet gears 24 drive the planet carrier 26 to rotate through the planet gear shaft 25, and the planet carrier 26 is in transmission connection with the transmission assembly 3, so that the speed reduction transmission from the motor assembly 1 to the transmission assembly 3 through the planet gear assembly 2 is realized. The carrier 26 includes a mounting hole 261 for mounting the pinion shaft 25 and a centrally disposed profiled hole 262, the profiled hole 262 being for driving connection with the input gear 33.

The planet carrier gasket 27 is arranged between the transmission component 3 and the planet carrier 26, and is used for realizing the connection between the planet carrier 26 and the transmission component 3 and ensuring the stability of the rotation and the connection of the planet carrier 26.

Referring to fig. 7, the transmission assembly 3 includes a transmission case assembly 31, an elastic member 32, an input gear 33, a transmission gear 34, an idle gear 35, an output gear 36, and a clamping member 37, and the transmission assembly 3 is configured to transmit the rotation of the planetary gear assembly 2 to the roller brush 202, so as to drive the roller brush 202 to rotate.

Referring to fig. 8 and 9, the transmission case assembly 31 includes a transmission case 311 and a transmission case cover 312, and the input gear 33, the transmission gear 34, the idle gear 35 and the output gear 36 are disposed in the transmission case assembly 31 and are sequentially connected in a transmission manner.

The transmission case 311 includes a side hole 3111, a first fixing portion 3112, a positioning portion 3113, a second fixing portion 3114, an output gear mounting portion 3115 and an elastic member mounting portion 3116, the side hole 3111 and the elastic member mounting portion 3116 are disposed at a side of the transmission case 311, and the side hole 3111 is used for mounting a fastener to achieve fixed connection with the floor brush 200. The first fixing portion 3112 is disposed beside the transmission case 311, is disposed near the planetary gear assembly 2, and corresponds to the first connection hole 212 of the planetary gear base 21 one-to-one, and is used for installing fasteners to fixedly connect the planetary gear assembly 2 and the transmission assembly 3. The positioning portion 3113 is disposed in the transmission case 311 and opens toward the planet carrier assembly 2 for limiting and fixing the input gear 33. The input gear 33 is put into the abutting portion 3113 of the transmission case 311 from the transmission case 311 toward the surface of the planetary gear assembly 2, and is fixed in the transmission case 311 in a limited manner. The second fixing portions 3114 are disposed in one-to-one correspondence with the second connecting holes 3121 of the transmission case cover 312, and are used for installing fasteners to achieve a fixed connection between the transmission case body 311 and the transmission case cover 312. The output gear mounting portion 3115 is for mounting the output gear 36. The elastic member mounting portion 3116 is for mounting the elastic member 32.

The transmission case cover 312 covers the transmission case body 311, and is fixed to the transmission case body by a fastener. The side of the transmission case cover 312 is provided with a second connection hole 3121, the second connection hole 3121 is matched with the second fixing portion 3114, and a fastener is installed to realize the fixed connection between the transmission case 311 and the transmission case cover 312.

The elastic member 32 is made of an elastic material and is disposed on the side hole 3111 of the transmission case 311, and the elastic member 32 is used for reducing vibration generated by transmission between different gears during operation of the roller brush driving mechanism 100, and also has a certain noise reduction effect.

Referring to fig. 10, the input gear 33 is installed in the abutting portion 3113, one end of the input gear 33 is a cylindrical helical gear 331, the other end of the input gear 331 away from the cylindrical helical gear 331 is provided with a special-shaped portion 332, the rotation axis of the input gear 33 and the output shaft 121 of the motor 12 are located on the same straight line, the special-shaped portion 332 is arranged corresponding to a special-shaped hole 262 of the planet carrier 26 of the planetary wheel assembly 2, the planet carrier 26 is sleeved on the special-shaped portion 332 through the special-shaped hole 262 so as to be in transmission connection with the input gear 33, and the cylindrical helical gear 331 is used for achieving transmission connection between the input gear 33 and the transmission gear 34. A first bearing 333 is further sleeved at one end of the input gear 33 close to the planetary wheel assembly 2, the first bearing 333 is used for ensuring the stability of rotation of the input gear 33, a second bearing 334 is further sleeved at one end of the input gear 33 far away from the planetary wheel assembly 2, the second bearing 334 is used for ensuring the stability of rotation of the input gear 33, and the input gear 33 is limited and fixed between the transmission case 311 and the transmission case cover 312 by the first bearing 333 and the second bearing 334.

Referring to fig. 11, the transmission gear 34 is a transmission dual gear, and includes a transmission helical gear 341 and a transmission spur gear 342 that are arranged in parallel, the input gear 33 and the transmission gear 34 are engaged and connected with the transmission helical gear 341 through a cylindrical helical gear 331, and the transmission spur gear 342 of the transmission gear 34 is engaged and connected with the idle gear 35. In a common rolling brush driving mechanism, the transmission assembly adopts straight gear transmission, so that the stability is not enough, the noise is high, and the straight gear transmission is changed into the transmission between the cylindrical helical gear 331 and the transmission helical gear 341, so that the stability of gear transmission is improved, and the noise is reduced. The transmission gear 34 further includes a first fixed shaft 343, the transmission gear 34 is sleeved on the first fixed shaft 343 for rotation, and the first fixed shaft 343 is fixedly installed between the transmission case 311 and the transmission case cover 312. And a third bearing 344 is further installed at one end of the transmission gear 34 close to the transmission case cover 312, i.e. far away from the planetary gear assembly 2, and the third bearing 344 is sleeved on the transmission gear 34 for ensuring the stability of the rotation of the transmission gear 34.

Referring to fig. 12, the idle gear 35 is disposed between the transmission gear 34 and the output gear 36, and is engaged and transmission-connected with both. The idle gear 35 includes a second fixed shaft 351, the idle gear 35 is sleeved on the second fixed shaft 351 to rotate, and the second fixed shaft 351 is fixedly installed between the transmission case 311 and the transmission case cover 312. And a fourth bearing 352 is further installed at one end of the idler 35 close to the transmission case cover 312, i.e. far away from the planet wheel assembly 2, and the fourth bearing 352 is sleeved on the idler 35 for ensuring the stability of the rotation of the transmission idler 35. In the embodiment of the present application, the first and second fixed shafts 343 and 351 are equal in size. In another embodiment of the present application, the idle gear 35 may not be provided, and the transmission gear 34 and the output gear 36 are directly meshed and in transmission connection.

Referring to fig. 13, the output gear 36 is installed in the output gear installation portion 3115 and is connected to the idle gear 35 for installing the roller brush 202, so as to drive the roller brush 202 to rotate. A fifth bearing 361 is further sleeved at one end of the output gear 36 close to the planetary wheel assembly 2, the fifth bearing 361 is used for guaranteeing the stability of rotation of the output gear 36, a sixth bearing 362 is further sleeved at one end of the output gear 36 far away from the planetary wheel assembly 2, the sixth bearing 362 is used for guaranteeing the stability of rotation of the output gear 36, and the output gear 36 is limited and fixed between the transmission case 311 and the transmission case cover 312 by the fifth bearing 361 and the sixth bearing 362.

In the embodiment of the present application, the second bearing 334, the third bearing 344, the fourth bearing 352, and the sixth bearing 362 are another deep groove ball bearings with equal size.

The rotational speeds of the spur gear 342 of the input gear 33, the idle gear 35, and the output gear 36 decrease in this order. So set up for the motor 12 of height just can give the round brush 202 after the twice deceleration of planet wheel subassembly 2 and transmission assembly 3 is actually passed through, guarantees the steady reliable operation of round brush 202.

Referring to fig. 15, one end of the clamping member 37 is fixed on the output gear 36 of the roller brush driving mechanism 100 in a limited manner, and the other end is clamped with the third clamping portion 2021 of the roller brush 202, so as to realize the transmission connection between the roller brush driving mechanism 100 and the roller brush 202.

Referring to fig. 15, the present invention further provides a floor brush 200 for cleaning the floor. The floor brush 200 comprises a floor brush base 201, a rolling brush 202 and a rolling brush driving mechanism 100, the rolling brush 202 is arranged on one side, facing a surface to be cleaned, of the floor brush base 201 and is in contact with the surface to be cleaned, the rolling brush driving mechanism 100 is arranged in the floor brush base 201 and is at least partially located on the outer side of the floor brush base 201, the rolling brush driving mechanism 100 is clamped with a third clamping portion 2021 of the rolling brush 202 through a clamping piece 37, therefore, transmission connection between the two is achieved, and power is provided for the rolling brush 202. In an embodiment of the present application, the surface to be cleaned is the floor.

Referring to fig. 16 and 17, in the present embodiment, the third engaging portion 2021 is a rotating gear, a tooth groove 371 is disposed at a position of the engaging member 37 corresponding to the rotating gear, a plurality of first slanted teeth 2022 are protruded from the rotating gear, a plurality of second slanted teeth 372 protruded from an inner surface of the tooth groove 371 are disposed in the tooth groove 371, and the first slanted teeth 2022 and the second slanted teeth 372 are engaged with each other in a staggered manner. The third engaging portion 2021 is engaged and rotatably connected with the engaging member 37 to facilitate the positioning, installation and rotational connection of the roller brush 202 and the roller brush driving mechanism 100, and the first helical teeth 2022 and the second helical teeth 372 are provided to improve the stability of the connection between the third engaging portion 2021 and the tooth grooves 371.

The utility model also provides a floor scrubber (not shown), including equipment body (not shown) and scrubbing brush 200, scrubbing brush 200 sets up in the bottom of equipment body for with treat clean surface contact, clean with treating clean surface. Wherein, the ground brush 200 and the device body can be detachably connected or fixedly connected. A handle for operation by a user is provided above the apparatus body, and a control unit may be provided at the handle to control the cleaning apparatus. The device body can be also internally provided with power equipment (such as a power supply) for providing power for the floor washing machine, a clean water tank for storing clean water, a sewage tank for collecting sewage, a garbage box for collecting garbage and the like.

To sum up, the utility model discloses a with round brush actuating mechanism 100 through setting up input gear 33 and drive gear 34 in the transmission assembly 3 through cylinder helical gear 331 and the meshing of transmission helical gear 341, it is not enough to have solved the driven stationarity of current round brush actuating mechanism, problem that the noise is high.

The above embodiments are only for illustrating the technical solutions of the present invention and are not limited, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. The utility model provides a round brush actuating mechanism, is applied to the scrubbing brush which characterized in that: including motor element, planet wheel subassembly and the transmission assembly that the transmission is connected in proper order, the transmission assembly is including input gear, drive gear and the output gear that the transmission is connected in proper order, drive gear is transmission duplicate gear, including the transmission helical gear and the transmission straight-teeth gear that set up side by side, input gear's one end is cylindrical helical gear, input gear deviates from cylindrical helical gear's one end with the transmission of planet wheel subassembly is connected, cylindrical helical gear with transmission helical gear meshing and transmission are connected, the transmission straight-teeth gear with the output gear transmission is connected.

2. A roller brush drive mechanism according to claim 1, wherein: one end of the input gear, which is far away from the cylindrical helical gear, is provided with a special-shaped part, and the transmission assembly is in transmission connection with the planetary wheel assembly through the special-shaped part.

3. A roller brush drive mechanism according to claim 1, wherein: the transmission assembly further comprises an idler wheel, and the idler wheel is arranged between the transmission gear and the output gear, meshed with the transmission gear and in transmission connection with the transmission gear and the output gear.

4. A roller brush drive mechanism according to claim 3, wherein: the transmission assembly is connected with the input gear, the transmission gear, the idler and the output gear through full gears in sequence, and the rotating speeds of the transmission straight gear, the idler and the output gear are reduced in sequence.

5. A roller brush drive mechanism according to claim 1, wherein: the planet wheel assembly comprises a sun wheel, a planet carrier and a planet wheel, the sun wheel is arranged on an output shaft of the motor assembly, the planet wheel is meshed with the sun wheel and is in transmission connection with the sun wheel, and the planet wheel is fixedly connected with the planet carrier through a planet gear shaft.

6. The roller brush drive mechanism according to claim 5, wherein: the planet wheel assembly comprises a planet wheel base and an inner gear ring which are connected in a clamping mode, the planet wheel and the sun wheel are arranged in the inner gear ring, the planet wheel is connected with the inner gear ring in a meshed mode, a first clamping portion is arranged on one side, facing the planet wheel base, of the inner gear ring, a second clamping portion is arranged at the position, corresponding to the first clamping portion, of the planet wheel base, and the inner gear ring is fixed in the planet wheel base in a limiting mode through the first clamping portion and the second clamping portion.

7. A roller brush drive mechanism according to claim 1, wherein: the transmission assembly comprises a transmission box assembly, the input gear, the transmission gear, the idler wheel and the output gear are all arranged in the transmission box assembly, the transmission box assembly comprises a transmission box body and a transmission cover body, the transmission box body comprises a butting part, and the transmission gear is arranged in the butting part.

8. The roller brush drive mechanism according to claim 7, wherein: the transmission assembly comprises an elastic part, a side hole is formed in the transmission box body, the elastic part is installed in the side hole, and the elastic part is configured to be right for damping the transmission box assembly.

9. A floor brush is characterized in that: the floor brush comprises a floor brush base, a rolling brush and a rolling brush driving mechanism according to any one of claims 1 to 8, wherein the rolling brush is arranged on one side, facing a surface to be cleaned, of the floor brush base and is in contact with the surface to be cleaned, and the rolling brush driving mechanism is arranged in the floor brush base, is at least partially positioned on the outer side of the floor brush base and is in transmission connection with the rolling brush to provide power for the rolling brush.

10. A floor brush as claimed in claim 9, wherein: the rolling brush driving mechanism is provided with a clamping piece, one end of the clamping piece is fixed in a limiting mode on an output gear of the rolling brush driving mechanism, the other end of the clamping piece is clamped with a third clamping portion of the rolling brush, and the clamping piece is configured to achieve the purpose that the rolling brush driving mechanism is connected with the rolling brush in a transmission mode.

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