CN116847770A

CN116847770A - Floor brush device and cleaning equipment

Info

Publication number: CN116847770A
Application number: CN202180093081.2A
Authority: CN
Inventors: 余冰冰; 闫猛
Original assignee: Tineco Intelligent Technology Co Ltd
Current assignee: Tineco Intelligent Technology Co Ltd
Priority date: 2021-02-26
Filing date: 2021-10-15
Publication date: 2023-10-03
Also published as: WO2022179127A1

Abstract

The application provides a floor brush device and cleaning equipment, the floor brush device includes: a roller brush assembly having a side end cap; the locking mechanism is arranged on the ground brush base and used for locking the side end cover under the condition that the rolling brush assembly is mounted on the ground brush base, and a matching mechanism matched with the locking mechanism is arranged on the side end cover; the pushing mechanism is arranged on the ground brush base and used for pushing the rolling brush assembly along the axial direction when the locking mechanism is released. According to the floor brush device, through improving the corresponding assembly structures of the side end cover of the rolling brush assembly and the floor brush base, the side end cover is axially and completely locked under the condition that the rolling brush assembly is mounted on the floor brush base, the rolling brush assembly is prevented from falling out, and when the locking mechanism is released, the rolling brush assembly is pushed to automatically fall out of the floor brush base, so that manual disassembly by a user is not needed, and the user experience is improved.

Description

Floor brush device and cleaning equipment

The present application claims priority from the chinese patent office, application number 202110218103.5, chinese patent application entitled "a floor brush device and cleaning apparatus," filed 26 of 2021, 02, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the field of intelligent household appliances, in particular to a floor brush device and cleaning equipment.

Background

At present, a rolling brush assembly of a floor brush on the market needs to be frequently disassembled for cleaning, a common installation scheme of the rolling brush assembly is that a plastic interface at one end of the rolling brush assembly is inserted into a clamping groove of a floor brush base from top to bottom, so that a user is inconvenient to install and take, the rolling brush assembly is free from upward limiting constraint, the rolling brush assembly is free from the risk of falling off in daily use, and the rolling brush assembly needs to be manually disassembled when being disassembled.

Disclosure of Invention

The application aims to overcome the defects of the prior art and provides a floor brush device and cleaning equipment.

According to a first aspect of the present application, there is provided a floor brush device comprising:

a roller brush assembly having a side end cap;

the locking mechanism is arranged on the ground brush base and used for locking the side end cover under the condition that the rolling brush assembly is mounted on the ground brush base, and a matching mechanism matched with the locking mechanism is arranged on the side end cover;

the pushing mechanism is arranged on the ground brush base and used for pushing the rolling brush assembly along the axial direction when the locking mechanism is released.

Optionally, the locking mechanism includes:

the side end cover is locked by the locking piece under the action of the first elastic piece under the condition that the rolling brush assembly is mounted on the ground brush base.

Optionally, the pushing mechanism includes:

the pushing piece and the second elastic piece push the side end cover under the action of the second elastic piece under the condition that the locking mechanism is released.

Optionally, one of the side end cover and the ground brush base is provided with a protruding part, and the other is provided with a concave part matched with the protruding part.

Optionally, the side end cover is provided with a protruding part, and the floor brush base is provided with a concave part matched with the protruding part.

Optionally, one end of the pushing member protrudes from the recess.

Optionally, the projection is configured to push the pusher back when engaged with the recess.

Optionally, the locking mechanism includes a locking member and a first elastic member, and the protruding portion is provided with a locking portion that mates with the locking member.

Optionally, the locking member and the locking portion are provided in a mating ramp arrangement.

Optionally, the floor brush device further comprises a release button, the release button cooperates with the locking member, and the locking member is retracted when the release button is pressed.

Optionally, a locking piece cover plate is arranged above the locking piece, and the locking piece cover plate is matched with the locking piece in shape and structure.

Optionally, the other side of the rolling brush assembly is connected to a driving mechanism on the floor brush base.

Optionally, the floor brush device further comprises a rolling brush cover plate, a clamping hook is arranged at one end of the inner side of the rolling brush cover plate, and a clamping part matched with the clamping hook is arranged at the corresponding position of the side end cover.

According to a second aspect of the present application, there is provided a cleaning apparatus including a main body and a floor brush device provided below the main body and connected thereto, the floor brush device including:

a roller brush assembly having a side end cap;

Optionally, one of the side end cover and the ground brush base is provided with a protruding part, the other is provided with a concave part matched with the protruding part, and the protruding part is matched with the concave part to lock the rolling brush assembly in the radial direction.

According to the floor brush device, through improving the corresponding assembly structures of the side end cover of the rolling brush assembly and the floor brush base, the side end cover is axially and completely locked under the condition that the rolling brush assembly is mounted on the floor brush base, the rolling brush assembly is prevented from falling out, and when the locking mechanism is released, the rolling brush assembly is pushed to automatically fall out of the floor brush base, so that manual disassembly by a user is not needed, and the user experience is improved.

Drawings

FIG. 1 is an exploded schematic view of the overall structure of a floor brush device according to an embodiment of the present application;

FIG. 2 is an exploded schematic view of a roller brush assembly in a floor brush device according to an embodiment of the application;

FIG. 3 is a schematic illustration of the positions of the pusher and side end caps with the roller brush assembly mounted to the floor brush base according to an embodiment of the present application;

FIG. 4 is an enlarged view of a portion of the pusher and side end cap of FIG. 3;

FIG. 5 is a schematic view of the location of the locking member and side end caps with the roller brush assembly mounted to the floor brush base according to an embodiment of the present application;

FIG. 6 is an enlarged view of a portion of the locking element and side cap of FIG. 5;

FIG. 7 is a schematic illustration of the position of the pusher and side caps with the roller brush assembly disengaged from the floor brush base according to an embodiment of the present application;

FIG. 8 is an enlarged view of a portion of the pusher and side caps of FIG. 7;

FIG. 9 is a schematic view of the location of the locking member and side end caps with the roller brush assembly disengaged from the floor brush base according to an embodiment of the present application;

FIG. 10 is an enlarged view of a portion of the locking element and side cap of FIG. 9;

FIG. 11 is a schematic view showing an assembly structure of a roller brush and a floor brush base in a floor brush device according to an embodiment of the present application;

fig. 12 is a cross-sectional view of a floor brush device according to an embodiment of the present application.

Reference numerals

11-round brush subassembly, 111-side end cover, 112-bulge, 20-round brush base, 113-round brush right-hand member lid, 114-round brush subassembly body, 115-round brush left end lid, 116-bearing, 117-axle, 118-screw, 119-screw lid, 201-actuating mechanism, 121-locking piece, 122-first elastic component, 123-locking piece apron, 131-impeller, 132-second elastic component, 14-release button, 21-upper cover, 22-lower cover, 15-round brush apron, 151-trip, 152-clamping portion.

Detailed Description

The following describes specific embodiments of the present application with reference to the drawings.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.

Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.

Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.

Unless otherwise indicated, numerical ranges herein include not only the entire range within both of its endpoints, but also the several sub-ranges contained therein.

An embodiment of the present application provides a floor brush device, as shown in fig. 1 to 3, including: a roll brush assembly 11 having a side end cap 111; a locking mechanism arranged on the ground brush base 20 and used for locking the side end cover 111 when the rolling brush assembly 11 is mounted on the ground brush base 20, wherein a matching mechanism matched with the locking mechanism is arranged on the side end cover 111; and the pushing mechanism is arranged on the ground brush base 20 and is used for pushing the rolling brush assembly 11 along the axial direction when the locking mechanism is released.

In one embodiment, the side end cap 111 is provided with a protrusion 112, the brush base 20 is provided with a recess cooperating with the protrusion 112, and in one embodiment, the side end cap 111 is provided with a recess, and the brush base 20 is provided with a protrusion cooperating with the recess. When the floor brush base is provided with a concave portion, one end of the pushing mechanism is provided in the concave portion, and when the floor brush base is provided with a convex portion, one end of the pushing mechanism is provided in the convex portion. Of course, both sides of the side end cover and the ground brush base are provided with concave parts and convex parts, and the concave parts and the convex parts are matched with each other to realize the limit of the rolling brush assembly in the radial direction. Those skilled in the art will appreciate that the above-described radial limiting structure is only an example, and other structures capable of implementing radial limiting of the rolling brush assembly 11 fall within the scope of the present application.

The following description will take, as an example, a structure in which the side cover 111 is provided with the protruding portion 112 and the floor brush base 20 is provided with the concave portion that mates with the protruding portion 112. The rolling brush assembly 11 may adopt a structure as shown in fig. 2, and as shown in fig. 2, the main structure includes a side end cover 111, a protruding part 112, a rolling brush right end cover 113, a rolling brush assembly body 114, a rolling brush left end cover 115, a bearing 116, a shaft 117, a screw 118, and a screw cover 119. The side end caps 111 are provided with protrusions 112, and the protrusions 112 cooperate with recesses in the brush base 20 to lock the roller brush assembly 11 radially after cooperation. The locking mechanism locks the side end caps 111 in the axial direction with the roller brush assembly 11 mounted to the floor brush base 20, and prevents the roller brush assembly from coming out by improving the fitting structure of the side end caps of the roller brush assembly and the floor brush base, and completely locking the side end caps in the axial direction and the radial direction with the roller brush assembly mounted to the floor brush base. The other side of the rolling brush assembly 11 is connected to a driving mechanism 201 on the ground brush base 20, and the driving mechanism 201 can drive the rolling brush assembly body 114 of the rolling brush assembly 11 to rotate under the action of a power source. The structure of the above-described rolling brush assembly is merely an example, and is not a limitation of the present application.

In one implementation of the present embodiment, the locking mechanism includes a locking member 121 and a first elastic member 122, and when the rolling brush assembly 11 is mounted to the floor brush base 20, the locking member 121 is retracted, so that the first elastic member 122 is compressed, and when the rolling brush assembly 11 is mounted to the floor brush base 20, the first elastic member 122 is reset, and the locking member 121 locks the side end cover 111 under the action of the first elastic member 122. The locking piece 121 may adopt a locking rod, a locking bolt, or other structures, and the locking piece 121 and the first elastic piece 122 may adopt a mode that the locking piece 121 is sleeved on the first elastic piece 122 and drives the elastic piece, or a mode that the elastic piece is arranged at the tail end of the locking piece 121, which is not limited in the application. In one embodiment, a locking member cover 123 is further disposed above the locking member 121, and the locking member cover 123 may have a shape structure matching with the locking member 121 for protecting the locking member 121.

In one embodiment, the pushing mechanism comprises: the pushing member 131 and the second elastic member 132, when the rolling brush assembly 11 is mounted to the floor brush base 20, the pushing member 131 is retracted, so that the second elastic member 132 is compressed, and when the locking mechanism is released, the second elastic member 132 is reset, and the pushing member 131 pushes the side end cover 111 under the action of the second elastic member 132. The pushing member 131 and the second elastic member 132 may be a manner that the pushing member 131 is sleeved on the second elastic member 132 and drives the second elastic member 132, or a manner that the elastic member is disposed at the end of the pushing member 131, which is not limited in the present application.

One end of the pushing member 131 protrudes from the recess. When the roller brush assembly 11 is mounted to the floor brush base 20, the pushing member 131 of the recess is retracted by the protrusion 112 of the side cover 111, compressing the second elastic member 132. Under the condition that the pushing structure is arranged, the locking mechanism and the pushing mechanism which are independently arranged on the ground brush base 20 are utilized, and when the locking mechanism is released, the rolling brush assembly 11 is pushed to be automatically separated from the ground brush base, so that manual disassembly by a user is not needed, and the user experience is improved.

Furthermore, as shown in fig. 1, the floor brush device may further include a release button 14, the release button 14 being engaged with the locking member 121, and the locking member 121 being retracted when the release button 14 is pressed. The release button 14 may be located at other suitable positions on the brush base 20 and the engagement structure with the locking member 121 may take any configuration that allows the locking member 121 to retract. In addition, as shown in fig. 1, the floor brush base 20 mainly includes an upper cover 21, a lower cover 22, and locking members, first elastic members, pushing members, second elastic members, release buttons, etc. located between the upper cover 21 and the lower cover 22.

The process of mounting the roller brush assembly 11 to the floor brush base 20 will be described with reference to fig. 3 to 6. When the rolling brush assembly 11 is mounted on the ground brush base 20, the convex part 112 of the rolling brush assembly 11 is mounted on the corresponding concave part of the ground brush base, and the axial pushing part 131 is retracted in the process of positioning the convex part 112, so that the second elastic part 132 is driven to compress. During the process of installing the protruding part 112 into the concave part, the outer wall of the protruding part contacts with the locking piece 121 and makes the locking piece 121 retract, so that the first elastic piece 122 is driven to compress, and after the rolling brush assembly 11 is installed to the ground brush base 20, the first elastic piece 122 is reset, so that the locking piece 121 locks the side end cover 111. The protruding portion 112 is provided with a locking portion that cooperates with the locking member 121. The locking member 121 and the locking portion may be provided in a mating inclined structure, and the mating mechanism may also be provided in other forms, which is not particularly limited in the present application.

After being mounted in place, the pushing member 131 and the second elastic member 132 are in the state shown in fig. 3 to 4, and the locking member 121 and the first elastic member 122 are in the state shown in fig. 5 to 6, wherein fig. 4 is a partially enlarged view of fig. 3 and fig. 6 is a partially enlarged view of fig. 5.

The process of pushing the roll brush assembly 11 out of the brush base 20 will be described with reference to fig. 7 to 10.

When the release button 14 is pressed, the locking member 121 is retracted, so that the first elastic member 122 is compressed, and the second elastic member 132 is reset due to the fact that the protruding portion 112 of the side end cover 111 is separated from the limitation of the locking member 121, so that the pushing member 131 pushes the roller brush assembly 11 in the axial direction, and the roller brush assembly 11 is separated from the ground brush base. Fig. 8 is a partial enlarged view of fig. 7, and fig. 10 is a partial enlarged view of fig. 9.

In one embodiment, as shown in fig. 11, the floor brush device further includes a rolling brush cover 15, a hook 151 is disposed at one end of the inner side of the rolling brush cover 15, and a locking portion 152 matched with the hook 151 is disposed at a corresponding position of the side end cover 111. The other end of the inner side of the rolling brush cover plate 15 can be provided with a clamping hook 151, and a clamping part 152 which is matched with the clamping hook 151 is arranged at a corresponding position of the ground brush base 20. The hook 151 has a supplementary axial limiting effect on the rolling brush assembly 11, so that reliable assembly of the rolling brush assembly is realized, and particularly, the rolling brush assembly with the side end cover, namely the corner cleaning structure is realized.

The traditional rolling brush assembly is installed by matching one end of the rolling brush with a driving mechanism, and the other end of the rolling brush is installed on a ground brush base through a metal elastic sheet or other structures, so that the rolling brush is not applicable any more when the cleaning corners of the rolling brush are as small as possible. In this embodiment, a new assembly structure as shown in fig. 12 is provided for the roller brush assembly 11, and the roller brush right end cover 113 and the driving mechanism 201 have a spiral self-locking structure. Axial limiting of the rolling brush assembly 11 is achieved after the rolling brush assembly 11 is assembled in place, the protruding portion 112 of the side end cover 111 is inserted into the concave portion of the ground brush base 20, namely the positioning groove, upper, lower, left and right limiting of the rolling brush assembly 11 is achieved, the clamping hooks 151 of the rolling brush cover plate 15 also have a supplementary axial limiting effect on the rolling brush assembly 11, and reliable assembly of the rolling brush with the corner cleaning structure is achieved.

The rolling brush assembly 11 may adopt a structure as shown in fig. 2, and as shown in fig. 2, the main structure includes a side end cover 111, a protruding part 112, a rolling brush right end cover 113, a rolling brush assembly body 114, a rolling brush left end cover 115, a bearing 116, a shaft 117, a screw 118, and a screw cover 119. The side end caps 111 are provided with protrusions 112, and the protrusions 112 cooperate with recesses in the brush base 20 to lock the roller brush assembly 11 radially after cooperation.

As shown in fig. 11, the floor brush device further includes a rolling brush cover 15, a hook 151 is disposed at one end of the inner side of the rolling brush cover 15, and a locking portion 152 engaged with the hook 151 is disposed at a corresponding position of the side end cover 111. The other end of the inner side of the rolling brush cover plate 15 can be provided with a clamping hook 151, and a clamping part 152 which is matched with the clamping hook 151 is arranged at a corresponding position of the ground brush base 20. The hook 151 has a supplementary axial limiting effect on the rolling brush assembly 11, so that reliable assembly of the rolling brush assembly is realized, and particularly, the rolling brush assembly with the side end cover, namely the corner cleaning structure is realized.

Specifically, when the rolling brush assembly 11 is installed, the rolling brush assembly 11 is firstly installed to the driving mechanism 201 through the rolling brush right end cover 113, the driving mechanism 201 adopts a spiral self-locking structure, parts such as buckles are reduced, and cost is saved. The protruding part is inserted into the concave part, so that reliable limiting and simple assembly are realized, and the corner processing effect is realized to the greatest extent.

The floor brush device is described above. In another embodiment, there is provided a cleaning apparatus including a main body and a floor brush device disposed below the main body and connected with the main body, the floor brush device including:

a roll brush assembly 11 having a side end cap 111;

a locking mechanism provided on the floor brush base 20 for locking the side end caps 111 in the axial direction in a state where the rolling brush assembly 11 is mounted to the floor brush base 20, wherein the side end caps 111 are provided with a fitting mechanism adapted to the locking mechanism;

and the pushing mechanism is arranged on the ground brush base 20 and is used for pushing the rolling brush assembly 11 along the axial direction when the locking mechanism is released.

The cleaning device is a device having at least a function of mopping or cleaning a cleaning surface, including but not limited to a cleaner, a sweeping robot having a mopping function, and the like. The floor brush device may have any structure in the above embodiment, and will not be described in detail in this embodiment.

Application scenario one

Taking the example that the floor brush device in fig. 1 is applied to a cleaning machine as an example, the cleaning machine comprises a floor brush device and a machine body, a sewage channel is formed in the floor brush device and the machine body, the floor brush device comprises a rolling brush assembly and a floor brush base, and a user needs to install the rolling brush assembly on the floor brush base before the cleaning machine works.

When the rolling brush is specifically installed, one side of the rolling brush assembly is installed to the driving head, the protruding part of the side end cover of the rolling brush assembly is installed to the concave part corresponding to the ground brush base, and the axial pushing piece retracts in the process of positioning the protruding part to drive the second elastic piece to compress. In the process that the convex part is mounted to the concave part, the outer wall of the convex part is in contact with the locking piece and enables the locking piece to retract to drive the first elastic piece to compress, and after the rolling brush assembly is mounted to the ground brush base, the first elastic piece resets to enable the locking piece to lock the side end cover. The rolling brush cover plate is arranged on the ground brush base, and the left side clamping hook at the lower part of the rolling brush cover plate is clamped with the clamping part of the protruding part of the side end cover, so that the right side clamping hook at the lower part of the rolling brush cover plate is clamped with the clamping part on the ground brush base.

When the cleaning equipment is started, the driving mechanism drives the rolling brush assembly to start to rotate, the cleaning surface is cleaned, and after the cleaning is finished, a user takes down the rolling brush cover plate and presses a release button on the floor brush base. Under the condition that the release button is pressed, the locking piece retracts to enable the first elastic piece to compress, and as the protruding portion of the side end cover is separated from the limit of the locking piece, the second elastic piece resets to enable the pushing piece to push the rolling brush assembly along the axial direction, and the rolling brush assembly automatically bounces off the ground brush base.

Application scene two

Taking the example of the floor brush device in fig. 11 applied to a cleaning machine as an example, the cleaning machine includes a floor brush device and a machine body, a sewage channel is formed in the floor brush device and the machine body, the floor brush device includes a rolling brush assembly and a floor brush base, and a user needs to install the rolling brush assembly to the floor brush base before the cleaning machine works.

During the concrete installation, install round brush subassembly one side to the drive head, this drive head has spiral auto-lock structure with round brush right-hand member lid, and the user is required to carry out rotatory realization locking with round brush subassembly right side during the installation. And then the convex parts of the side end covers of the rolling brush assembly are arranged in the concave parts corresponding to the ground brush base, specifically, the side end covers are inserted into the concave parts, namely the positioning grooves through guiding, and the side end covers of the rolling brush assembly are limited up, down, left and right. And then the rolling brush cover plate is mounted on the floor brush base, and the left side clamping hook at the lower part of the rolling brush cover plate is clamped with the clamping part of the protruding part of the side end cover, so that the right side clamping hook at the lower part of the rolling brush cover plate is clamped with the clamping part on the floor brush base.

When the cleaning equipment is started, the driving mechanism drives the rolling brush assembly to start to rotate, the cleaning surface is cleaned, and after the cleaning is finished, a user takes down the rolling brush cover plate. The user takes out the bulge of side end cover from the concave part, later carries out reverse rotation to the right side and realizes that the right side is deviate from, makes the whole ground brush base that deviate from of round brush subassembly.

While the preferred embodiments and examples of the present application have been described in detail with reference to the accompanying drawings, the present application is not limited to the above-described embodiments and examples, and various changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

A floor brush device, comprising:

a roll brush assembly (11) having a side end cap (111);

the locking mechanism is arranged on the ground brush base (20) and used for locking the side end cover (111) when the rolling brush assembly (11) is mounted on the ground brush base (20), wherein a matching mechanism matched with the locking mechanism is arranged on the side end cover (111);

the pushing mechanism is arranged on the ground brush base (20) and is used for pushing the rolling brush assembly (11) along the axial direction when the locking mechanism is released.
The floor brush device of claim 1, wherein the locking mechanism comprises:

a locking piece (121) and a first elastic piece (122), wherein the locking piece (121) locks the side end cover (111) under the action of the first elastic piece (122) under the condition that the rolling brush assembly (11) is mounted on the ground brush base (20).
The floor brush device according to claim 1 or 2, wherein the pushing mechanism comprises:

a pushing member (131) and a second elastic member (132), wherein the pushing member (131) pushes the side end cover (111) under the action of the second elastic member (132) under the condition that the locking mechanism is released.
A floor brush arrangement according to claim 3, characterized in that one of the side end caps (111), the floor brush base (20) is provided with a protrusion (112), the other is provided with a recess cooperating with the protrusion (112).
The floor brush device according to claim 4, characterized in that the side end caps (111) are provided with protrusions (112), and the floor brush base (20) is provided with recesses cooperating with the protrusions (112).
The floor brush device according to claim 5, characterized in that one end of the pushing member (131) protrudes from the recess.
The floor brush device of claim 6, wherein the projection (112) is configured to push the push member (131) to retract when engaged with the recess.
The floor brush device according to claim 6, characterized in that the locking mechanism comprises a locking member (121) and a first elastic member (122), the protruding portion (112) being provided with a locking portion cooperating with the locking member (121).
The floor brush device according to claim 8, characterized in that the locking element (121) and the locking portion are provided in a mating ramp structure.
The floor brush device according to claim 2, characterized in that it further comprises a release button (14), which release button (14) cooperates with the locking member (121), the locking member (121) being retracted in case the release button (14) is pressed.
The floor brush device according to claim 2, characterized in that a locking element cover plate (123) is arranged above the locking element (121), the locking element cover plate (123) having a shape and structure matching those of the locking element (121).
A floor brush arrangement according to claim 1 or 2, characterized in that the other side of the roller brush assembly (11) is connected to a drive mechanism (201) on the floor brush base (20).
The floor brush device according to claim 1 or 2, further comprising a rolling brush cover plate (15), wherein a hook (151) is arranged at one end of the inner side of the rolling brush cover plate (15), and a clamping part (152) matched with the hook (151) is arranged at a corresponding position of the side end cover (111).
A cleaning apparatus comprising a main body and a floor brush device disposed below the main body and connected thereto, the floor brush device comprising:

a roll brush assembly (11) having a side end cap (111);

the locking mechanism is arranged on the ground brush base (20) and used for locking the side end cover (111) when the rolling brush assembly (11) is mounted on the ground brush base (20), wherein a matching mechanism matched with the locking mechanism is arranged on the side end cover (111);

the pushing mechanism is arranged on the ground brush base (20) and is used for pushing the rolling brush assembly (11) along the axial direction when the locking mechanism is released.
The floor brush device according to claim 14, characterized in that one of the side end caps (111) and the floor brush base (20) is provided with a protrusion (112), the other is provided with a recess cooperating with the protrusion (112), and the protrusion (112) cooperates with the recess to lock the roll brush assembly (11) radially.