CN221229290U

CN221229290U - Combined rolling brush and cleaning equipment

Info

Publication number: CN221229290U
Application number: CN202323003675.5U
Authority: CN
Inventors: 侯成浩; 梁海军; 王贵成
Original assignee: Beijing Idriverplus Technologies Co Ltd
Current assignee: Beijing Idriverplus Technologies Co Ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-06-28
Anticipated expiration: 2033-11-07

Abstract

The application provides a combined roller brush and cleaning device, comprising: the brush comprises a brush body, a first connecting piece, a second connecting piece, a bearing and a driving shaft insert; the brush body is of a circular tube structure, wherein the outer diameter of the bearing and the diameter of the driving shaft insert circumscribed circle are smaller than the inner diameter of the brush body; the first end of the brush body is connected with the first connecting piece, and the second end of the brush body is connected with the second connecting piece, wherein the diameter of the circumcircle of the first connecting piece and the diameter of the circumcircle of the second connecting piece are smaller than or equal to the outer diameter of the brush body; the first connecting piece is connected with the bearing, the second connecting piece is connected with the driving shaft insert, wherein the driving shaft insert is used for connecting and driving the driving shaft of the brush body rotation. The weight of whole combination formula round brush can be alleviateed to this scheme.

Description

Combined rolling brush and cleaning equipment

Technical Field

The embodiment of the application relates to the technical field of robots, in particular to a combined rolling brush and cleaning equipment.

Background

With the increasing popularity of cleaning devices, mobile cleaning devices are used for cleaning the floors of indoor environments such as home rooms, business superhouses and stations, and the mobile cleaning devices comprise rolling brushes, and the rolling brushes are driven by motors to roll the floors.

At present, the rolling brush adopts an integral structure, and a bearing and a driving shaft insert are respectively arranged at two ends of the rolling brush.

However, since the diameters of the bearing and the driving shaft insert are smaller than those of the rolling brush, in order to allow the bearing and the driving shaft insert to be inserted into the hollow structure of the rolling brush, the hollow size of the rolling brush is small, resulting in a large total weight of the rolling brush and thus a high power consumption of the cleaning apparatus.

Disclosure of utility model

In view of the above, embodiments of the present application provide a combined rolling brush and cleaning device to at least partially solve the above-mentioned problems.

According to a first aspect of an embodiment of the present application, there is provided a combined roller brush, including: the brush comprises a brush body, a first connecting piece, a second connecting piece, a bearing and a driving shaft insert; the brush body is of a circular tube structure, wherein the outer diameter of the bearing and the diameter of the driving shaft insert circumscribed circle are smaller than the inner diameter of the brush body; the first end of the brush body is connected with the first connecting piece, and the second end of the brush body is connected with the second connecting piece, wherein the diameter of the circumcircle of the first connecting piece and the diameter of the circumcircle of the second connecting piece are smaller than or equal to the outer diameter of the brush body; the first connecting piece is connected with the bearing, the second connecting piece is connected with the driving shaft insert, wherein the driving shaft insert is used for connecting and driving the driving shaft of the brush body rotation.

According to a second aspect of embodiments of the present application there is provided a cleaning device comprising at least one combined roller brush as described above.

According to the scheme provided by the embodiment of the application, the combined rolling brush comprises a brush body, a first connecting piece, a second connecting piece, a bearing and a driving shaft insert, wherein the brush body is of a circular tube structure, the bearing is connected with the brush body through the first connecting piece, and the driving shaft insert is connected with the brush body through the second connecting piece, so that the inner diameter of the brush body can be larger than the outer diameter of the bearing and the diameter of the circumcircle of the driving shaft insert, and the brush body can be made to have smaller wall thickness on the premise that the outer diameter of the brush body is fixed, so that the brush body has smaller weight, and the weight of the whole combined rolling brush is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic view of a modular roll brush according to one embodiment of the present application;

FIG. 2 is a schematic view of a first connector of a cruciform sheet like structure according to one embodiment of the present application;

FIG. 3A is a schematic view of a first connector according to one embodiment of the present application;

FIG. 3B is a schematic view of a second connector according to one embodiment of the present application;

FIG. 4A is a schematic view of a first connector according to another embodiment of the present application;

FIG. 4B is a schematic view of a second connector according to another embodiment of the present application;

FIG. 4C is a schematic view of a combined roller brush according to another embodiment of the application;

Fig. 5 is a schematic view of a cleaning apparatus provided in one embodiment of the present application.

Reference numerals illustrate:

100: the roller brush 102: brush body 104: first connecting piece

106: Second connector 108: bearing 110: driving shaft insert

112: Fastening screw 114: lint 116: first side end cap

118: Second side end cap 200: motor 400: cleaning apparatus

Detailed Description

For a clearer understanding of technical features, objects, and effects of embodiments of the present application, a specific implementation of the embodiments of the present application will be described with reference to the accompanying drawings.

In this document, "schematic" means "serving as an example, instance, or illustration," and any illustrations, embodiments described herein as "schematic" should not be construed as a more preferred or advantageous solution.

For the sake of simplicity of the drawing, the parts relevant to the present application are shown only schematically in the figures, which do not represent the actual structure thereof as a product. In addition, for simplicity and ease of understanding, components having the same structure or function in some of the figures are shown only schematically or only one or more of them are labeled.

The embodiment of the application provides a combined rolling brush, and the combined rolling brush is described in detail through a plurality of embodiments.

Fig. 1 is a combined roller brush according to an embodiment of the present application. As shown in fig. 1, the combined roller brush 100 includes a brush body 102, a first connector 104, a second connector 106, a bearing 108, and a drive shaft insert 110.

The brush body 102 has a circular tubular structure, a first end of the brush body 102 is connected to the first connecting member 104, and a second end of the brush body 102 is connected to the second connecting member 106. The first connector 104 is connected to a bearing 108, the second connector 106 is connected to a drive shaft insert 110, and the outer diameter of the bearing 108 and the diameter of the circle circumscribed by the drive shaft insert 110 are both smaller than the inner diameter of the brush body 102.

The diameter of the circumscribing circle of the first connector 104 and the diameter of the circumscribing circle of the second connector 106 are both less than or equal to the outer diameter of the brush body 102. The drive shaft insert 110 is used to connect to a drive shaft that drives the brush body 102 to rotate, which can drive the brush body 102 to rotate to clean the floor.

Since the outer diameter of the bearing 108 is smaller than the inner diameter of the brush body 102, in order to connect the bearing 108 to the brush body 102, the first connector 104 is connected to the first end of the brush body 102, the bearing 108 is connected to the first connector 104, and the connection between the bearing 108 and the brush body 102 is achieved through the first connector 104. Since the diameter of the circumcircle of the driving shaft insert 110 is smaller than the inner diameter of the brush body 102, in order to connect the driving shaft insert 110 with the brush body 102, the second end of the brush body 102 is connected with the second connecting piece 106, the driving shaft insert 110 is connected with the second connecting piece 106, and the connection between the driving shaft insert 110 and the brush body 102 is realized through the second connecting piece 106.

The first connecting piece 104 is connected at the first end of the brush body 102, the second connecting piece 106 is connected at the second end of the brush body 102, in order to ensure that the brush body 102 can normally rotate around the axial direction, the diameter of the circumcircle of the first connecting piece 104 and the diameter of the circumcircle of the second connecting piece 106 are smaller than or equal to the outer diameter of the brush body 102, namely, in the direction perpendicular to the axial line of the brush body 102, the first connecting piece 104 and the second connecting piece 106 cannot exceed the edge of the brush body 102, and therefore, when the brush body 102 rotates around the axial direction, the first connecting piece 104 and the second connecting piece 106 cannot block the rotation of the brush body 102.

The bearing 108 may be connected to an external support shaft and the drive shaft insert 110 may be connected to an external drive shaft, both of which are provided on the support frame of the cleaning device, so that the combined roller brush 100 is connected to the support frame of the cleaning device. The driving shaft rotates under the driving of the driving motor, and the driving shaft rotates to drive the brush body 102 to rotate around the axial direction of the brush body so as to clean the floor.

In the embodiment of the application, the brush body 102 is in a circular tube structure, the bearing 108 is connected with the brush body 102 through the first connecting piece 104, and the driving shaft insert 110 is connected with the brush body 102 through the second connecting piece 106, so that the inner diameter of the brush body 102 can be larger than the outer diameter of the bearing 108 and the diameter of the circumcircle of the driving shaft insert 110, and the brush body 102 can have smaller wall thickness on the premise that the outer diameter of the brush body 102 is fixed, so that the brush body 102 has smaller weight, and the weight of the whole combined rolling brush 100 is further reduced.

In one possible implementation manner, the first connecting piece 104 is in a sheet-shaped structure, the diameter of a circumcircle of the first connecting piece 104 is larger than the inner diameter of the brush body 102, a part of area of one side surface of the first connecting piece 104 is attached to the first end of the brush body 102, and the first connecting piece 104 is connected with the brush body 102 through the attaching area; the second connecting piece 106 is of a sheet structure, the diameter of the circumcircle of the second connecting piece 106 is larger than the inner diameter of the brush body 102, a part of area of one side face of the second connecting piece 106 is attached to the second end of the brush body 102, and the second connecting piece 106 is connected with the brush body 102 through the attaching area.

The first connecting member 104 may be a circular sheet structure, a cross-shaped sheet structure or a regular polygon sheet structure, which is not limited in this embodiment of the present application, so as to ensure that a partial area of the side surface of the first connecting member 104 can be attached to and connected with the first end of the brush body 102. As an example, fig. 2 shows a first connecting member 104 with a cross-shaped sheet structure, where 4 areas of the first connecting member 104 are attached to a first end of the brush body 102, and the first connecting member 104 is connected to the first end of the brush body 102 by welding, bonding, or screwing, etc. at the area where the first connecting member 104 is attached to the brush body 102.

It should be understood that the second connecting member 106 may have the same shape as the first connecting member 104, and the connection between the second connecting member 106 and the second end of the brush body 102 may be referred to as the connection between the first connecting member 104 and the brush body 102, which is not described herein.

In the embodiment of the application, the diameters of the circumscribed circles of the first connecting piece 104 and the second connecting piece 106 are smaller than the outer diameter of the brush body 102 and larger than the inner diameter of the brush body, so that one side surface of the first connecting piece 104 and one side surface of the second connecting piece 106 can be respectively covered at two ends of the brush body 102 and are connected with the brush body 102, the connection between the first connecting piece 104 and the second connecting piece 106 and the brush body 102 is more convenient and stable, the assembly difficulty of the combined type rolling brush 100 is reduced, and the durability of the combined type rolling brush 100 is improved.

In one possible implementation, as shown in fig. 1, the first connecting member 104 is in a sheet structure, the first connecting member 104 is embedded in the first end of the brush body 102, and at least a part of a region on the thickness surface of the first connecting member 104 is attached to the inner wall of the brush body 102. The second connecting piece 106 is of a sheet structure, the second connecting piece 106 is embedded into the second end of the brush body 102, and at least part of the area on the thickness surface of the second connecting piece 106 is attached to the inner wall of the brush body 102.

The first connecting member 104 and the second connecting member 106 are embedded in the brush body 102, and the first connecting member 104 and the second connecting member 106 may have any suitable shape, such as a circular sheet structure, a cross-shaped sheet structure, etc., which is not limited to the embodiment of the present application.

The first connector 104 and the second connector 106 may be located entirely within the brush body 102 or may be located partially within the brush body 102 along the axial direction of the brush body 102.

At least part of the area on the thickness surface of the first connecting piece 104 is attached to the inner wall of the brush body 102, when the first connecting piece 104 is in a circular sheet structure and the first connecting piece 104 is located in the brush body 102, the thickness surface of the first connecting piece 104 is attached to the inner wall of the brush body 102, and when the first connecting piece 104 is not in a circular sheet structure or is located in the brush body 102, part of the thickness surface of the first connecting piece 104 is attached to the inner wall of the brush body 102. In the area where the first connecting member 104 is attached to the inner wall of the brush body 102, the first connecting member 104 may be connected to the brush body 102 by welding, bonding, screw connection, or the like.

In the embodiment of the present application, the first connecting member 104 and the second connecting member 106 are embedded in the brush body 102, and the diameter of the circumcircle of the first connecting member 104 and the diameter of the circumcircle of the second connecting member 106 are smaller than or equal to the inner diameter of the brush body 102, so that the first connecting member 104 and the second connecting member 106 have smaller weight, and the overall weight of the combined rolling brush 100 is further reduced.

In one possible implementation, as shown in fig. 1, both the first connector 104 and the second connector 106 are located within the brush body 102. Wherein, along the axial direction of the brush body 102, one side surface of the first connecting member 104 is flush with the first end of the brush body 102, and one side surface of the second connecting member 106 is flush with the second end of the brush body 102.

In the embodiment of the application, the first connecting piece 104 and the second connecting piece 106 are both located in the brush body 102, and along the axial direction of the brush body 102, one side surface of the first connecting piece 104 is flush with the first end of the brush body 102, and one side surface of the second connecting piece 106 is flush with the second end of the brush body 102, so that the first connecting piece 104 and the second connecting piece 106 do not occupy the external space of the brush body 102, and the brush body 102 can have a larger length on the premise of fixing the distance between the bearing 108 and the driving shaft insert 110, thereby increasing the contact area between the brush body 102 and the ground and improving the cleaning efficiency when the cleaning equipment performs cleaning operation.

Fig. 3A is a schematic view of a first connector according to an embodiment of the present application, and fig. 3B is a schematic view of a second connector according to an embodiment of the present application, where, as shown in fig. 1, 3A and 3B, the first connector 104 and the second connector 106 are each in a disc-like structure. At least two first threaded holes are formed in the attaching region of the first connecting piece 104 and the brush body 102, the fastening screws 112 are assembled in the first threaded holes, the side walls of the first threaded holes comprise first side wall regions and second side wall regions, the first side wall regions are located on the first connecting piece 104, the second side wall regions are located on the brush body 102, and the axes of the first threads are parallel to the axes of the brush body 102. At least two second threaded holes are formed in the attaching region of the second connecting piece 106 and the brush body 102, the fastening screws 112 are assembled in the second threaded holes, the side walls of the second threaded holes comprise a third side wall region and a fourth side wall region, the third side wall region is located on the second connecting piece 106, the fourth side wall region is located on the brush body 102, and the axis of the second threads is parallel to the axis of the brush body 102.

The fastening screw 112 is disposed on the contact surface of the brush body 102 and the first coupling member 104 to prevent the brush body 102 and the first coupling member 104 from rotating relative to each other, and the fastening screw 112 may be any suitable type of screw including, but not limited to, a flat end screw, a tapered end screw, etc.

It should be understood that the connection between the second connecting member 106 and the second end of the brush body 102 can be referred to as the connection between the first connecting member 104 and the brush body 102, and will not be described herein.

In the embodiment of the present application, at least two threaded holes are provided in the attaching areas of the first connecting member 104 and the second connecting member 106 and the brush body 102 along the axis direction of the brush body, and fastening screws 112 are assembled in the threaded holes, so that the first connecting member 104 and the second connecting member 106 can be firmly connected to the brush body 102, and meanwhile, the first connecting member 104 and the second connecting member 106 are prevented from rotating relative to the brush body 102.

In one possible implementation, neither the first connector 104 nor the second connector 106 is circular. The first end of the brush body 102 is provided with a first embedding hole, the first connecting piece 104 is embedded into the first embedding hole, the axis of the first embedding hole is coincident with the axis of the brush body 102, and the thickness surface of the first connecting piece 104 is attached to the side wall of the first embedding hole. The second end of the brush body 102 is provided with a second embedding hole, the second connecting piece 106 is embedded into the second embedding hole, the axis of the second embedding hole is overlapped with the axis of the brush body 102, and the thickness surface of the second connecting piece 106 is attached to the side wall of the second embedding hole.

The first connector 104 may be any suitable non-circular shape including, but not limited to, cross-shaped, flower-shaped, etc.

The first insertion hole has a shape corresponding to the shape of the first coupling member 104 such that the first coupling member 104 is inserted into the first insertion hole and cannot rotate relatively.

In the embodiment of the application, both the first connecting piece 104 and the second connecting piece 106 are not round, the first connecting piece 104 is matched with the first embedded hole, the second connecting piece 106 is matched with the second embedded hole, the first connecting piece 104 cannot rotate in the first embedded hole, and the second connecting piece 106 cannot rotate in the second embedded hole, so that the first connecting piece 104 and the second connecting piece 106 can synchronously rotate with the brush body 102, and the relative positions of the first connecting piece 104 and the second connecting piece 106 and the brush body 102 do not need to be fixed in the rotation direction of the brush body 102, so that the assembly of the combined rolling brush 100 is more convenient.

In one possible implementation, the first connector 104 is provided with a first through hole along the axial direction of the brush body 102, and the bearing 108 is embedded in the first through hole. Along the axial direction of the brush body 102, a second through hole is formed in the second connecting member 106, and the driving shaft insert 110 is inserted into the second through hole.

In one example, the driving shaft insert (110) is embedded into a second through hole formed in the second connecting piece (106), and a fastening screw is assembled in the joint area of the driving shaft insert (110) and the second connecting piece (106) along the axis direction of the driving shaft insert (110) so that the driving shaft insert (110) and the second connecting piece (106) are connected.

In the embodiment of the present application, along the axial direction of the brush body 102, the bearing 108 is embedded in the through hole of the first connecting piece 104, and the driving shaft insert 110 is embedded in the through hole of the second connecting piece 106, so that the connection relationship between the bearing 108 and the driving shaft insert 110 and the brush body 102 is more stable.

In one possible implementation, the first end surface of the bearing 108 is flush with the first end of the brush body 102, or the first end surface and the second end surface of the bearing 108 are both located in the brush body 102, and the second end surface of the bearing 108 faces the second connecting member 106; and/or the first end surface of the driving shaft insert 110 is flush with the second end of the brush body 102, or the first end surface and the second end surface of the driving shaft insert 110 are both positioned in the brush body 102, wherein the second end surface of the driving shaft insert 110 faces the first connector 104.

In the embodiment of the present application, in the axial direction of the brush body 102, the bearing 108 and the driving shaft insert 110 are both located inside the brush body 102, so that no additional space is occupied, and the brush body 102 can have a larger length on the premise of fixing the distance between the first connecting piece 104 and the second connecting piece 106, so that the contact area between the brush body 102 and the ground can be increased and the cleaning efficiency can be improved when the cleaning device performs cleaning operation.

Fig. 4A is a schematic view of a first connector according to another embodiment of the present application, fig. 4B is a schematic view of a second connector according to another embodiment of the present application, and fig. 4C is a schematic view of a combined roller brush according to another embodiment of the present application. As shown in fig. 4A, 4B, and 4C, the combined roller brush 100 further includes: lint 114, a first side end cap 116, and a second side end cap 118. The flannelette 114 is of a sleeve-shaped structure, the flannelette 114 is arranged on the brush body 102, and the length of the flannelette 114 is longer than that of the brush body 102. The first side end cap 116 and the second side end cap 118 are both sheet-like structures, and the diameter of the circumcircle of the first side end cap 116 and the diameter of the circumcircle of the second side end cap 118 are both smaller than or equal to the outer diameter of the brush body 102. The first side end cap 116 is connected to a first end of the brush body 102, and a first end of the fleece 114 is secured between the first side end cap 116 and the first end of the brush body 102. The second side end cap 118 is connected to the second end of the brush body 102, and the second end of the fleece 114 is secured between the second side end cap 118 and the second end of the brush body 102.

The first side end cap 116 and the second side end cap 118 are each of annular sheet-like construction such that an outer support shaft may pass through the first side end cap 116 and connect with the bearing 108 and an outer drive shaft may pass through the second side end cap 118 and connect with the drive shaft insert 110.

A fixing member is assembled to the first side cover 116 along the axis of the brush body to fix the first end of the fleece 114 between the first side cover 116 and the first end of the brush body 102. The fixing member may be any suitable form such as a self-tapping screw, and the present application is not limited thereto.

It should be understood that the connection between the second end of the fleece 114 and the second end of the second side end cap 118 and the second end of the brush body 102 can be referred to as the connection between the fleece 114 and the first end of the first side end cap 116 and the first end of the brush body 102, which are not described herein.

In the embodiment of the present application, the fleece 114 is sleeved on the brush body 102, the length of the fleece 114 is greater than that of the brush body 102, the first end and the second end of the fleece 114 are respectively fixed between the first side end cover 116 and the first end of the brush body 102, the second side end cover 118 and the second end of the brush body 102, and fixing pieces are assembled on the first side end cover 116 and the second side end cover 118 along the axial direction of the brush body 102, so that the fleece 114 can be firmly connected with the brush body 102.

Fig. 5 is a cleaning apparatus according to one embodiment of the present application. As shown in fig. 5, the cleaning device 400 includes at least one combined roller brush 100 of any of the embodiments described above.

In the embodiment of the present application, the driving shaft insert 110 is connected to the brush body 102 through the second connecting piece 106, and the motor 200 is connected to the driving shaft insert 110, so as to drive the brush body 102 to rotate, and the brush body 102 rotates to drive the lint 114 to rotate, thereby cleaning the ground.

The cleaning equipment can be any equipment with a ground cleaning function, for example, can be equipment such as a hand-push type, a driving type and self-propelled floor cleaning vehicle/floor cleaning machine, a sweeping vehicle/floor sweeping machine, an environmental sanitation vehicle, a cleaning machine, a dust collection vehicle/dust pushing vehicle and the like; the system can also be equipment such as a floor cleaning vehicle/floor cleaning machine, a floor sweeping vehicle/floor sweeping machine, a floor sweeping robot, an environmental sanitation vehicle, a cleaning machine, a dust collecting vehicle/dust pushing vehicle and the like which are realized by utilizing an automatic driving technology.

It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The foregoing is merely illustrative of the embodiments of the present application and is not to be construed as limiting the scope of the embodiments of the present application. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of the embodiments of the application, and it should be understood that they are intended to be within the scope of the embodiments of the application.

Claims

1. A modular roll brush (100), comprising: the brush comprises a brush body (102), a first connecting piece (104), a second connecting piece (106), a bearing (108) and a driving shaft insert (110);

The brush body (102) is of a circular tube structure, wherein the outer diameter of the bearing (108) and the diameter of a circle circumscribed by the driving shaft insert (110) are smaller than the inner diameter of the brush body (102);

The first end of the brush body (102) is connected with the first connecting piece, the second end of the brush body (102) is connected with the second connecting piece (106), and the diameter of the circumcircle of the first connecting piece (104) and the diameter of the circumcircle of the second connecting piece (106) are smaller than or equal to the outer diameter of the brush body (102);

The first connecting piece (104) is connected with the bearing (108), the second connecting piece (106) is connected with the driving shaft insert (110), wherein the driving shaft insert (110) is used for being connected with a driving shaft for driving the brush body (102) to rotate.

2. The combination roll brush (100) of claim 1, wherein,

The first connecting piece (104) is of a sheet-shaped structure, the diameter of a circumcircle of the first connecting piece (104) is larger than the inner diameter of the brush body (102), a part of area of one side surface of the first connecting piece (104) is attached to the first end of the brush body (102), and the first connecting piece (104) is connected with the brush body (102) through an attaching area;

The second connecting piece (106) is of a sheet-shaped structure, the diameter of the circumcircle of the second connecting piece (106) is larger than the inner diameter of the brush body (102), a part of area of one side face of the second connecting piece (106) is attached to the second end of the brush body (102), and the second connecting piece (106) is connected with the brush body (102) through an attaching area.

3. The combination roll brush (100) of claim 1, wherein,

The first connecting piece (104) is of a sheet-shaped structure, the first connecting piece (104) is embedded into the first end of the brush body (102), and at least part of the area on the thickness surface of the first connecting piece (104) is attached to the inner wall of the brush body (102);

The second connecting piece (106) is of a sheet-shaped structure, the second connecting piece (106) is embedded into the second end of the brush body (102), and at least part of the area on the thickness surface of the second connecting piece (106) is attached to the inner wall of the brush body (102).

4. A combined roller brush (100) according to claim 3, characterized in that the first connecting piece (104) and the second connecting piece (106) are both located in the brush body (102), wherein one side of the first connecting piece (104) is flush with the first end of the brush body (102) and one side of the second connecting piece (106) is flush with the second end of the brush body (102) in the axial direction of the brush body (102).

5. The combination roll brush (100) of claim 3, wherein,

The first connecting piece (104) and the second connecting piece (106) are of a wafer-shaped structure;

At least two first threaded holes are formed in the joint area of the first connecting piece (104) and the brush body (102), fastening screws (112) are assembled in the first threaded holes, the side walls of the first threaded holes comprise first side wall areas and second side wall areas, the first side wall areas are located on the first connecting piece (104), the second side wall areas are located on the brush body (102), and the axes of the first threads are parallel to the axes of the brush body (102);

At least two second threaded holes are formed in the attaching area of the second connecting piece (106) and the brush body (102), fastening screws (112) are assembled in the second threaded holes, the side walls of the second threaded holes comprise a third side wall area and a fourth side wall area, the third side wall area is located on the second connecting piece (106), the fourth side wall area is located on the brush body (102), and the axis of the second threads is parallel to the axis of the brush body (102).

6. A combined roller brush (100) according to claim 3, characterized in that neither the first connection piece (104) nor the second connection piece (106) is circular;

A first embedding hole is formed in the first end of the brush body (102), the first connecting piece (104) is embedded into the first embedding hole, the axis of the first embedding hole is coincident with the axis of the brush body (102), and the thickness surface of the first connecting piece (104) is attached to the side wall of the first embedding hole;

The second end of the brush body (102) is provided with a second embedding hole, the second connecting piece (106) is embedded into the second embedding hole, wherein the axis of the second embedding hole coincides with the axis of the brush body (102), and the thickness surface of the second connecting piece (106) is attached to the side wall of the second embedding hole.

7. The combination roll brush (100) of claim 1, wherein,

A first through hole is formed in the first connecting piece (104) along the axial direction of the brush body (102), and the bearing (108) is embedded into the first through hole;

And a second through hole is formed in the second connecting piece (106) along the axial direction of the brush body (102), and the driving shaft insert (110) is embedded into the second through hole.

8. The combination roll brush (100) of claim 7, wherein,

The first end face of the bearing (108) is flush with the first end of the brush body (102), or the first end face and the second end face of the bearing (108) are both positioned in the brush body (102), wherein the second end face of the bearing (108) faces the second connecting piece (106);

And/or the number of the groups of groups,

The first end face of the driving shaft insert (110) is flush with the second end of the brush body (102), or the first end face and the second end face of the driving shaft insert (110) are both positioned in the brush body (102), wherein the second end face of the driving shaft insert (110) faces the first connecting piece (104).

9. The combined roller brush (100) according to any of claims 1-8, wherein the combined roller brush (100) further comprises: a fleece (114), a first side end cap (116) and a second side end cap (118);

The flannelette (114) is of a sleeve-shaped structure, the flannelette (114) is sleeved on the brush body (102), and the length of the flannelette (114) is longer than that of the brush body (102);

The first side end cover (116) and the second side end cover (118) are of sheet structures, and the diameter of the circumcircle of the first side end cover (116) and the diameter of the circumcircle of the second side end cover (118) are smaller than or equal to the outer diameter of the brush body (102);

The first side end cover (116) is connected with the first end of the brush body (102), and the first end of the flannelette (114) is fixed between the first side end cover (116) and the first end of the brush body (102);

the second side end cover (118) is connected with the second end of the brush body (102), and the second end of the flannelette (114) is fixed between the second side end cover (118) and the second end of the brush body (102).

10. A cleaning device (400) comprising at least one combined roller brush (100) according to any of claims 1-9.