CN209789745U - Scrubbing brush subassembly and robot of sweeping floor - Google Patents

Abstract

The utility model discloses a brush subassembly and robot of sweeping floor. The floor brush assembly comprises a floor brush shell, an air suction port and a rolling brush, a floor brush cavity is arranged in the floor brush shell, at least part of the rolling brush is arranged in the floor brush cavity, and the air suction port is communicated with the floor brush cavity. The floor brush assembly further comprises a driving cavity and a driving piece, the driving cavity is provided with an air inlet, and the driving piece is used for rotating under the action of positive pressure air flow from the driving cavity and driving the rolling brush to rotate. Compare the formula scrubbing brush of electricity drive, the utility model provides a scrubbing brush subassembly need not additionally to be equipped with the motor with the drive round brush to the drive wind regime of this scrubbing brush subassembly no longer only provides by the runner of breathing in, can not arouse the pressure loss of the runner of breathing in and the problem that the further round brush drive effect that leads to is weak because of occuping the produced negative pressure air current of breathing in.

Description

Scrubbing brush subassembly and robot of sweeping floor

Technical Field

the utility model relates to a domestic appliance's technical field especially relates to a brush subassembly and robot of sweeping floor.

Background

The sweeping robot is a household appliance which gradually enters common family life in recent years. The main structure of the sweeping robot can be divided into a dust generating device, a dust suction device and a dust filtering device according to functions, wherein the dust generating device comprises a floor brush component which is usually provided with a rolling brush. The rotation of round brush can be raised the dust on ground, is convenient for absorb.

A known floor brush driving method of a floor sweeping robot is an electric driving type, in which a motor drives a roller brush to rotate so as to raise dust.

The sweeping robot with the electrically-driven floor brush is high in cost due to the fact that the motor is needed for driving, and due to the fact that a power supply and an electric circuit are introduced, the whole system is complex in structure, high in weight and prone to failure.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a floor brush assembly and a floor sweeping robot, which solves the problem of the floor sweeping robot with an electrically driven floor brush that a driving motor is additionally provided.

According to one aspect of the utility model, a floor brush assembly is provided, which comprises a floor brush shell, an air suction port and a rolling brush, wherein a floor brush cavity is arranged in the floor brush shell, the rolling brush is at least partially arranged in the floor brush cavity, the air suction port is communicated with the floor brush cavity, the floor brush assembly further comprises a driving cavity and a driving piece, and the driving cavity is provided with an air inlet; the driving piece is used for rotating under the action of positive pressure air flow from the driving cavity and driving the rolling brush to rotate.

in the technical scheme, the air inlet of the driving cavity receives positive pressure air flow, and the positive pressure air flow drives the driving piece to rotate so as to drive the rolling brush to rotate. Compared with an electrically-driven floor brush, the floor brush component in the technical scheme does not need to be additionally provided with a motor to drive the rolling brush, so that the cost is reduced, unnecessary electric circuits are omitted, and the problems of complex structure and easy occurrence of electric faults are solved; and the drive wind source of scrubbing brush subassembly among this technical scheme no longer only is provided by the runner of breathing in, can not cause the pressure loss of the runner of breathing in and the further weak problem of round brush drive effect that leads to because of occupying the produced negative pressure air current of breathing in. In case the air flow is used to drive the floor brush assembly, it is ensured that the dust removal effect is not impaired.

Furthermore, the floor brush assembly also comprises an isolation component, the isolation component divides the floor brush cavity into a driving air channel and a dust removal air channel, and the air suction port is communicated with the dust removal air channel. The isolating component prevents the airflow of the negative pressure air source at the air suction port from being used for driving the driving part, and the pressure loss of the air suction flow passage is avoided.

Furthermore, a plurality of through holes are formed in the isolation component. The through hole enables partial airflow of the positive pressure air source to flow into the dust removing air duct, and the vicinity of the through hole of the dust removing air duct is in a positive pressure state. And because only part of positive pressure air current flows through, the vicinity of the through hole of the dust removing air duct is in a micro-positive pressure state. The micro-positive pressure means that the air pressure is slightly higher than the outdoor atmospheric pressure. In the present embodiment, the vicinity of the through hole of the dust removal air duct is in a micro-positive pressure state, and the suction port of the dust removal air duct is in a negative pressure state, so that the whole dust removal air duct has an obvious air pressure difference. The design of arranging a plurality of through holes on the isolation component improves the air pressure difference between the two positions. The increase of the air pressure difference is beneficial to the air flow of the whole dust removing air channel, the speed of air suction and air exhaust is increased, dust is further driven to enter an air suction port of the dust removing air channel, and the dust raising effect and the dust removing efficiency of the sweeping robot are improved.

Furthermore, the cross section of the through hole is in a long strip shape. The strip-shaped through hole enables the air flow to pass through to be jet flow, and positive pressure air flow in the jet flow state enables the vicinity of the through hole to be closer to a micro-positive pressure state.

Further, the number of the through holes is plural, and the through holes are uniformly arranged in all or a partial region of the isolation member. The through holes are uniformly distributed, so that the jet flow is more uniformly distributed, the area of the micro-positive pressure state is relatively widely distributed, the air circulation of the whole dust removing air channel is more facilitated, and the air suction speed and the air exhaust speed of the sweeping robot are increased.

Further, the floor brush assembly is also provided with a bearing seat and a bearing, wherein the bearing seat is used for placing the bearing, and the bearing is used for supporting a transmission rod piece. The rotation of the transmission rod piece can drive the rolling brush to rotate, the friction coefficient in the process of rotary motion can be reduced by adopting the bearing, and the rotary precision of the rolling brush is ensured, so that the rolling brush can work conveniently.

In a preferred embodiment, the isolation member is a bearing housing. The bearing seat is selected as the isolation component, so that the increase of the number of parts can be avoided.

In another preferred embodiment, the driving air duct is separated from the dust-removing air duct by a bearing seat at one end of the dust-removing air duct, and the bearing seat at the other end is used as an air exhaust channel of the dust-removing air duct. The bearing seat is not provided with a sealing structure and can allow airflow to pass through. After the bearing seat arranged at the other end of the dust removing air duct is used as an air exhaust channel of the dust removing air duct, the bearing seat used as the air exhaust channel replaces the original air outlet of the sweeping robot, and the air flow of the original air outlet is completely guided to the driving cavity through the drainage pipeline, so that the driving piece rotates. By the structural design, the positive pressure airflow of the original air outlet is fully utilized, so that the energy utilization rate is improved.

Further, the driving piece comprises a plurality of turbine blades and a transmission rod piece, the turbine blades are fixedly connected to one end of the transmission rod piece, and the transmission rod piece is coaxial with the rolling brush. The turbine blade is fixedly connected with the transmission rod piece to form a driving piece, the structure is simple, and the power loss is less.

further, the plurality of turbine blades constitute an axial flow fan, a radial flow fan or a mixed flow fan. An axial flow fan is adopted, and the trend of the driving chamber and the air inlet of the driving chamber is close to the axial direction of the fan; by adopting the radial fan, the trend of the driving chamber and the air inlet of the driving chamber is close to the excircle tangential direction of the fan; the mixed flow fan is arranged between the two fans. The position of the driving cavity and the air inlet of the driving cavity at the sweeping robot can be determined by the technical personnel in the field according to the needs, and the drainage pipeline can be reasonably arranged, so that the internal space of the sweeping robot is optimized.

According to another aspect of the utility model, a robot of sweeping the floor is provided. The sweeping robot comprises an air outlet, a drainage pipeline and the floor brush component in any one of the technical schemes; one end of the drainage pipeline is connected with the air outlet, and the other end of the drainage pipeline is connected with the air inlet of the floor brush assembly. Obviously, the sweeping robot has the beneficial effects of the floor brush assembly of any one of the above technical schemes, and the description is omitted here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic partial structural view of a sweeping robot according to an embodiment of the present invention, wherein a face cover of the sweeping robot is hidden;

Fig. 2 is a schematic structural view of a lower portion of a sweeping robot according to an embodiment of the present invention;

Fig. 3 is a top view of a floor brush assembly of the sweeping robot according to an embodiment of the present invention;

FIG. 4 is a side view of FIG. 3;

Fig. 5 is a schematic structural diagram of a driving member of a sweeping robot according to an embodiment of the present invention.

In the drawings, 10-the floor brush assembly; 110-suction opening; 120-a drive member; 1201-turbine blades; 1202-driving rod member; 130-a drive air duct; 140-a dust removal air duct; 150-a bearing seat; 1501-a through hole; 160-a drive chamber; 1601-an air intake; 20-a housing; 30-a motor; 40-a separator; 50-a dust cup; 60-HEPA filter; and 70-a drainage pipeline.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner" and "outer" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection and a movable connection, a detachable connection and a non-detachable connection, or an integral connection; may be mechanically or electrically connected or may be in communication with each other. And "fixedly connected" includes detachably connected, non-detachably connected, integrally connected, and the like. The following provides many different embodiments or examples for implementing different features of the invention.

In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

The following text will describe the sweeping robot in some embodiments with reference to the drawings of the specification.

Fig. 1 is a partial schematic structural view of a sweeping robot according to some embodiments, where a view angle of fig. 1 is close to a top view angle, and a face cover of the sweeping robot is hidden. As shown in fig. 1, the sweeping robot includes a floor brush assembly 10, a housing 20, a motor 30, a separator 40, a dust cup 50, and a HEPA (High Efficiency particulate Air) filter 60, wherein the floor brush assembly 10, the motor 30, the separator 40, the dust cup 50, and the HEPA filter 60 are all located inside the housing 20; the floor brush assembly 10 is provided with a floor brush chamber, the floor brush chamber is in gas circuit connection with the separator 70 through a pipeline, and the separator 40 is respectively communicated with the dust cup 50 and the HEPA filter 60; the HEPA filter 60 is in communication with the chamber defined by the motor housing of the motor 30.

The motor 30 is a brushless motor composed of a permanent magnet rotor, a multi-pole winding stator, a position sensor, and the like. The high-speed rotation of the motor 30 enables the interior of the sweeping robot to form vacuum, and dust or hair on the ground enters the dust removing air duct of the sweeping robot from the suction port on the bottom surface of the sweeping robot under the driving of the negative pressure airflow. Alternatively, the motor 30 may be a brush motor. The electromagnetic torque between the stator and rotor of a brushed motor causes the entire motor to rotate and carry a load.

The separator 40 is provided with a separation chamber which is communicated with the dust removal air duct. The dust removal air duct comprises a floor brush chamber and an air duct formed by communicating a pipeline connecting the floor brush chamber and the separator. After the dust-containing airflow in the dust removal air duct of the sweeping robot enters the separation cavity, the dust in the dust-containing airflow is separated from the air under the action of centrifugal force.

The dirt cup 50 communicates with the separation chamber of the separator 40 via a channel-like passage, and the dirt cup 50 is located directly below the separator 40. After the dust in the dusty airflow is separated from the air, the dust directly falls into a dust cup below. The dirt cup 50 is fixedly connected to the separator 40, and the fixed connection includes a detachable connection and a non-detachable connection, such as a snap-fit connection. Optionally, the dirt cup 50 is integrally formed with the separator 40.

The filter mesh surface of the HEPA filter 60 is pleated, i.e., corrugated, to increase the air permeable area and thereby filter more air. Referring to fig. 1, a common cover is provided directly above the separator 40, the dirt cup 50 and the HEPA filter 60. The cover body is opened to perform operations such as replacement of the HEPA filter 60 and cleaning of the dust cup 50.

Referring to fig. 1, the basic working principle of the sweeping robot is as follows: the motor 30 draws air to provide negative pressure airflow, and the floor brush assembly 10 is used for raising dust adhered to the ground. The dirty airflow enters the interior of the cleaning robot through the suction opening of the floor brush assembly 10 and flows towards the separator 40. The separator 40 centrifugally slings dirt and dust into the dirt cup 50, while air passes through the HEPA filter 60 into the chamber defined by the motor housing, wherein the HEPA filter 60 is capable of filtering dirt and dust that is not slung into the dirt cup 50.

The housing 20 of the sweeping robot can be divided into an upper part and a lower part. Fig. 2 is a partial structural schematic diagram of the lower half part of the sweeping robot.

As shown in fig. 2, the sweeping robot also has a drain line 70. Fig. 2 shows only a portion of the length of the drain line 70. One end of the drainage pipe 70 is connected to an air outlet (not shown) of the sweeping robot, and the other end is connected to the air inlet 1601 of the driving chamber 160, so that the positive pressure air flow at the air outlet of the sweeping robot is guided to the vicinity of the driving member 120 through the drainage pipe 70. The structure of the driving chamber 160, the air inlet 1601 and the driving member 120 will be described in detail below with reference to the drawings.

The air current of sweeping floor robot's air outlet department is positive pressure air current, and air inlet 1601 accepts the input of positive pressure air current for driving piece 120 is rotatory, and then drives the round brush rotation. Alternatively, the positive pressure gas stream may also be provided by a separate external gas supply source.

Compared with a sweeping robot equipped with an electrically-driven brush, the sweeping robot in the embodiment has at least the following two levels of advantages:

(1) The scrubbing brush that robot has of sweeping floor in this embodiment is the pneumatic scrubbing brush, and it drives the driving piece 120 rotation through the air current of robot self of sweeping floor, by the rotation of driving piece 120 drive round brush for whole robot of sweeping floor need not additionally to be equipped with the motor that drives the round brush, and the cost is reduced, and saved unnecessary electric circuit, avoided the problem that electric fault has appeared complicacy in structure and easily.

(2) Moreover, the driving air source of the floor brush of the floor sweeping robot in the embodiment is no longer provided by the air suction flow channel, and the problems of pressure loss of the air suction flow channel and further weak driving effect of the rolling brush caused by occupying negative pressure airflow generated by air suction are solved. Under the condition of using the pneumatic drive floor brush assembly, the dust removal effect is ensured not to be weakened.

The following text will describe the floor brush assembly 10 of the sweeping robot in some embodiments in more detail with reference to the drawings of the specification.

Referring to fig. 2, the floor brush assembly 10 includes a driving member 120 and a driving chamber 160, the driving chamber 160 is provided with an air inlet 1601; the driving member 120 is configured to rotate under the action of the positive pressure air flow from the air inlet 1601 and drive the roller brush to rotate. The driving member 120 is in the form of a radial flow fan, the air inlet 1601 is connected to a volute (not shown) of the radial flow fan, and the air inlet 1601 extends in a tangential direction of the radial flow fan. Accordingly, the portion of the flow guide line 70 near the air inlet 1601 also extends in a direction close to the tangential direction of the radial flow fan. The radial fan can enable the tangential air inlet trend of the outer circle of the fan to be more space-saving.

Alternatively, the drive member 120 may also be in the form of an axial fan or a mixed flow fan. When the axial flow fan works, the air flowing direction is the same as the axial direction of the fan; when the radial flow fan works, the blades push air to flow in a direction (namely radial direction) vertical to the shaft of the fan; when the mixed flow fan works, the impeller enables air to do centrifugal motion and axial motion. The difference of the selected fans determines the position design of the air inlet to a certain extent, and even determines the arrangement of the drainage pipeline. An axial flow fan is adopted, and the trend of an air inlet is close to the axial direction of the fan; and by adopting the radial flow fan, the trend of the air inlet is close to the excircle tangential direction of the fan.

As shown in fig. 2, the floor brush chamber is divided into a driving air duct 130 and a dust removing air duct 140. The driving member 120 is located at one side of the driving air duct 130.

Fig. 3 is a top view of a brush assembly of a sweeping robot according to an embodiment of the present invention. As shown in fig. 3, the floor brush assembly 10 further has a floor brush housing, an air inlet 110 and a rolling brush (not shown), the floor brush housing defines a floor brush chamber, the rolling brush is further disposed in the floor brush chamber, and the air inlet 110 is used as an inlet of the sweeping robot for sucking the swept objects such as dust and hair, and is communicated with the floor brush chamber. From there, the swept debris, such as dust or hair, enters the floor brush chamber. It should be noted that the meaning of "the inside of the floor brush chamber is also provided with a rolling brush" should be understood in a broad sense, i.e. including the case that a part of the structure of the rolling brush is located inside the floor brush chamber, but another part of the structure is exposed outside the floor brush chamber.

Fig. 3 also shows that the floor brush chamber is divided into a drive air duct 130 and a dust extraction air duct 140 by a bearing housing 150, the structure of the bearing housing 150 being described below in connection with fig. 4. The suction opening 110 communicates with the dust removing air duct 140. Rather, the suction opening 110 is on the side of the dust collection duct 140 rather than the side of the drive duct 130.

The bearing housing 150 as an isolation member prevents the flow of the negative pressure air source at the suction port from being used to drive the driving member, and pressure loss in the suction flow path is prevented. The bearing seat is selected as the isolation component, so that the original component of the sweeping robot can be fully utilized, and the quantity of parts is not increased.

Alternatively, the spacer member may be a spacer. The partition board is used as a common isolation component, has simple structure and convenient installation, but needs an additional adding component.

Fig. 4 is a side view of fig. 3. As shown in FIG. 4, the floor brush assembly 10 further includes a bearing seat 150 and a bearing, the bearing seat 150 being used to seat the bearing. Fig. 4 also shows that the bearing seat 150 is provided with a plurality of through holes 1501, and the through holes 1501 are used for allowing the air flow to flow from the driving air duct 130 to the dust removing air duct 140.

the through holes 1501 allow a part of the airflow of the positive pressure air source to flow into the dust removing air duct 140, so that the vicinity of the through holes of the dust removing air duct 140 presents a positive pressure state. Since only a part of the positive pressure air flows, the vicinity of the through hole of the dust removal duct 140 is in a pressure state of slight positive pressure. The micro-positive pressure means that the air pressure is slightly higher than the outdoor atmospheric pressure. In the present embodiment, the vicinity of the through hole of the dust removing air duct 140 is in a micro-positive pressure state, and the suction port of the dust removing air duct 140 is in a negative pressure state, so that the whole dust removing air duct 140 has a significant air pressure difference.

In the case where the partition member has no through-hole, since the negative pressure air source exists in the entire dust removal air duct 140 and the vicinity of the partition member is also in the dust removal air duct 140, the air pressure in the vicinity of the partition member is also negative pressure. Thus, the air pressure difference between the vicinity of the partition member and the position of the air inlet in the dust removal air duct 140 is not significant. In the embodiment, the design that the isolating component is provided with the plurality of through holes improves the air pressure difference between the two positions. The increase of the air pressure difference is beneficial to the air flow of the whole dust removing air channel, the speed of air suction and air exhaust is increased, dust is further driven to enter an air suction port of the dust removing air channel, and the dust raising effect and the dust removing efficiency of the sweeping robot are improved.

If the partition member is not provided or the diameter of the through hole is too large, the driving air duct 130 and the dust removing air duct 140 are almost or completely in a communicating state, the rotation of the driving member 120 is easily affected by the negative pressure air source of the dust removing air duct 140, i.e., the negative pressure air flow of the suction port, and the pressure loss of the suction flow passage is still reduced. The air pressure of the air suction flow channel has an important influence on the dust suction capability of the sweeping robot. Inevitably, the dust removing effect of the sweeping robot is greatly reduced.

More specifically, fig. 4 also shows that four circular through holes 1501 are provided at equal intervals on the end surface of the bearing housing 150, and the centers of the four circular through holes 1501 are located on the same circumference.

optionally, the number of through holes is one or more; the plurality of through holes are uniformly arranged. For example, the centers of the plurality of through holes are located on the same circumference; or the centers of the plurality of through holes are positioned on the array.

"plurality" is to be understood as at least two. The cross-sectional shape of the through-hole may be circular, rectangular, square, regular polygonal, or other shape. The through-holes are preferably small holes, whereby jets are formed. The inner diameter of the through holes and the number of the through holes can be reasonably set by a person skilled in the art according to needs. The larger the inner diameter of the through hole is, or the more the number of the through holes is, the larger the positive pressure near the through hole of the dust removal air duct is, but the pressure of the air suction flow passage can also leak to the driving air duct; the smaller the inner diameter of the through hole is, or the smaller the number of the through holes is, the smaller the positive pressure near the through hole of the dust removal air duct is, the less obvious the positive pressure near the through hole is, and the less obvious the state of the micro positive pressure is.

Fig. 5 is a schematic structural diagram of a driving member of a sweeping robot according to an embodiment of the present invention. As shown in fig. 5, the drive member 120 includes a plurality of turbine blades 1201 and a drive link 1202. As shown in fig. 5, the turbine blade 1201 is fixedly connected to one end of a drive rod 1202, and the drive rod 1202 is coaxial with the roller brush. Specifically, the roller brush is mounted directly on the drive rod 1202.

The turbine blade 1201 is fixedly connected with the transmission rod member 1202, so that the rotation of the turbine blade 1201 can drive the rotation of the transmission rod member; the drive rod 1202 is coaxial with the roller brush, and rotation of the drive rod 1202 can drive rotation of the roller brush. The positive pressure airflow at the air outlet drives the turbine blade 1201, and the turbine blade 1201 converts the kinetic energy of the fluid into mechanical energy to rotate the rolling brush. Specifically, the turbine blade and the transmission rod piece can be connected in a non-detachable mode such as welding and the like, can also be connected in a detachable mode such as threaded connection or buckle connection and the like, and can also be integrally formed. Alternatively, the drive rod and the roller brush may be connected by a drive mechanism.

In other embodiments of the present invention, referring to fig. 2, the bearing seat 150 at one end of the dust-removing air duct 140 isolates the driving air duct 130 from the dust-removing air duct 140, and the bearing seat 150 at the other end serves as an air exhaust channel of the dust-removing air duct 140.

After the bearing seat at the other end of the dust removal air channel is arranged as an air exhaust channel of the dust removal air channel, the air exhaust channel can replace the original air outlet exhaust air of the sweeping robot to a certain extent, so that the air flow of the original air outlet of the sweeping robot can be completely guided to the air inlet through the drainage pipeline, and the driving piece is rotated. By the structural design, all positive pressure air flows of the original air outlet are fully utilized, and the energy utilization rate is improved.

In the description herein, references to the description of "one embodiment" and "another embodiment" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a scrubbing brush subassembly, includes scrubbing brush casing, induction port and round brush, be equipped with the scrubbing brush cavity in the scrubbing brush casing, the round brush at least part sets up in the scrubbing brush cavity, the induction port intercommunication the scrubbing brush cavity, its characterized in that, the scrubbing brush subassembly still includes:

A drive chamber provided with an air inlet;

the driving piece is used for rotating under the action of positive pressure air flow from the driving cavity and driving the rolling brush to rotate.

2. The floor brush assembly of claim 1, further comprising a partition member dividing the floor brush chamber into a drive air duct and a dust removal air duct, the suction port communicating with the dust removal air duct.

3. A floor brush assembly as claimed in claim 2, wherein the spacer member is provided with a plurality of through holes.

4. A floor brush assembly according to claim 3, wherein said through holes are plural in number and are uniformly arranged over all or a part of the area of said partition member.

5. A floor brush assembly as claimed in claim 2, further having a bearing housing for housing the bearing and a bearing for supporting a drive link.

6. A floor brush assembly as claimed in claim 5, wherein the spacer member is a bearing housing.

7. The floor brush assembly of claim 6, wherein the bearing seat at one end of the dust removal duct isolates the drive duct from the dust removal duct, and the bearing seat at the other end serves as an exhaust passage for the dust removal duct.

8. a floor brush assembly according to any of claims 1-7, wherein the driving member comprises a plurality of turbine blades fixedly connected at one end thereof and a drive rod coaxial with the roller brush.

9. The floor brush assembly of claim 8, wherein the plurality of turbine blades constitute an axial flow fan, a radial flow fan, or a mixed flow fan.

10. A sweeping robot comprising an air outlet, characterized in that the sweeping robot further comprises a drainage line and a floor brush assembly according to any one of claims 1-9; one end of the drainage pipeline is connected with the air outlet, and the other end of the drainage pipeline is connected with the air inlet of the floor brush assembly.