EP4565106A1

EP4565106A1 - Cleaning assembly and surface cleaning device

Info

Publication number: EP4565106A1
Application number: EP23716844.8A
Authority: EP
Inventors: Chuang GE; Meng SUM
Original assignee: Versuni Holding BV
Current assignee: Versuni Holding BV
Priority date: 2022-08-02
Filing date: 2023-04-03
Publication date: 2025-06-11
Also published as: WO2024027959A1; CN117562446A

Abstract

The present invention discloses a cleaning assembly and a surface cleaning device. The cleaning assembly includes: a mounting bracket; a first roller shaft and a second roller shaft, which are rotatably arranged on the mounting bracket; a cleaning element, which is sleeved on the first roller shaft and the second roller shaft, and the cleaning element rotates in the same direction as the first roller shaft and the second roller shaft rotate; a pressurizing element, which is arranged between the first roller shaft and the second roller shaft, and the pressurizing element can abut against the cleaning element. In cleaning process, tension force of the cleaning element can be changed in a way that the pressurizing element abuts against the cleaning element, which can increase pressure between the cleaning element and a surface to be cleaned, increase friction between the cleaning element and the surface to be cleaned, enhance cleaning effect of the cleaning element on the surface to be cleaned, and improve cleaning efficiency.

Description

CLEANING ASSEMBLY AND SURFACE CLEANING DEVICE

FIELD

[0001] The present invention belongs to a technical field of cleaning, and in particular relates to a cleaning assembly and a surface cleaning device.

BACKGROUND

[0002] Cleaning equipment is a tool commonly used in production and life, and is often used to clean surfaces of floors, tiles, carpets, walls or other objects. There are many types of existing cleaning equipment, and a surface to be cleaned can be cleaned by different types of cleaning structures. The cleaning equipment can clean the surface to be cleaned by a mop, a rolling brush or a cleaning roller. For example, in a patent application CN 215383695 U, it is disclosed that a mop assembly comprises a first rotating shaft, a second rotating shaft and a mop, and the mop is driven to rotate by the rotating shaft to realize cleaning, which increases an area of the mop and can increase a cleaning area, but it is still difficult to satisfy needs for cleaning effect and efficiency.

SUMMARY

[0003] In cleaning process of existing cleaning equipment, cleaning effect is not good, cleaning efficiency is low, and user experience is not good. Embodiments of the present invention provide a cleaning assembly and a surface cleaning device to solve the problem of cleaning equipment in the cleaning process that the cleaning effect is not good, and the cleaning efficiency is low.

[0004] In a first aspect, an embodiment of the present invention provides a cleaning assembly which comprises: a mounting bracket; a first roller shaft and a second roller shaft, wherein the first roller shaft and the second roller shaft are rotatably arranged on the mounting bracket; a cleaning element, wherein the cleaning element is sleeved on the first roller shaft and the second roller shaft, and the cleaning element rotates in the same direction as the first roller shaft and the second roller shaft rotate; a pressurizing element, wherein the pressurizing element is arranged between the first roller shaft and the second roller shaft, and the pressurizing element can abut against the cleaning element.

[0005] In an optional embodiment, at least one of the first roller shaft and the second roller shaft is movable, and during movement of at least one of the first roller shaft and the second roller shaft, the first roller shaft is relatively close to or far away from the second roller shaft.

[0006] In an optional embodiment, the pressurizing element is movable, so that the pressurizing element abuts against or moves away from the cleaning element.

[0007] In an optional embodiment, the cleaning assembly also comprises: a fixing seat, wherein the pressurizing element is arranged on the fixing seat, and the fixing seat is rotatably arranged on the mounting bracket. During rotation of the fixing seat, the fixing seat drives the pressurizing element to abut against or move away from the cleaning element.

[0008] In an optional embodiment, the cleaning assembly also comprises: a first driving mechanism, wherein the first driving mechanism is used to drive the pressurizing element to move, and the first driving mechanism can drive the pressurizing element to approach or move away from the cleaning element.

[0009] In an optional embodiment, the first driving mechanism comprises: a fixing bracket and an elastic element, wherein the elastic element is arranged at the fixing bracket; a protruding part, wherein the protruding part is arranged on the elastic element; a limiting part, wherein the limiting part can abut against or disengage from the pressurizing element, and when the limiting part abuts against the pressurizing element, the elastic element is in a compressed state, and the pressurizing element abuts against the cleaning element; when the limiting part is disengaged from the pressurizing element, the elastic element drives the protruding part to move, and the protruding part drives the pressurizing element to move away from the cleaning element.

[0010] In an optional embodiment, a guide groove is provided on the fixing bracket, wherein the elastic element and the protruding part are arranged in the guide groove; and/or the first driving mechanism also comprises: a limiting plate, wherein the limiting plate is arranged on the fixing bracket, and the protruding part is arranged between the limiting plate and the fixing bracket; and/or the first driving mechanism also comprises: a limiting plate, wherein the limiting plate is arranged on the fixing bracket, the protruding part is arranged between the limiting plate and the fixing bracket, and an avoidance groove is provided at a position of the limiting plate corresponding to the pressurizing element. In an optional embodiment, the pressurizing element comprises a first pressurizing roller shaft that abuts against an outer periphery of the cleaning element.

[0011] In an optional embodiment, the pressurizing element further comprises a second pressurizing roller shaft that abuts against an inner periphery of the cleaning element close to a surface to be cleaned.

[0012] In an optional embodiment, the pressurizing element comprises a second pressurizing roller shaft that abuts against the inner periphery of the cleaning element.

[0013] In an optional embodiment, the second pressurizing roller shaft comprises a cylindrical body, an outer wall of the cylindrical body has at least one contact plane, and the contact plane abuts against the inner periphery of the cleaning element; or the second pressurizing roller shaft comprises a connecting seat and a plurality of roller shaft bodies arranged at the connecting seat, the plurality of roller shaft bodies are arranged in parallel at intervals, and the roller shaft bodies abut against the inner periphery of the cleaning element.

[0014] In an optional embodiment, the pressurizing element comprises a pressurizing roller shaft, and the pressurizing roller shaft is parallel to the first roller shaft and the second roller shaft; and/or an outer surface of the pressurizing element is provided with protruding structures distributed at intervals; and/or the cleaning assembly also comprises: a cover plate, wherein the cover plate is arranged adjacent to an outer surface of the cleaning element, and a side of the cover plate facing the cleaning element is provided with protruding structures distributed at intervals.

[0015] In an optional embodiment, the cleaning assembly also comprises: a fixing bracket, wherein one end of the first roller shaft is rotatably arranged on the mounting bracket, and the other end of the first roller shaft is rotatably arranged on the fixing bracket; wherein one end of the second roller shaft is rotatably arranged on the mounting bracket, and the other end of the second roller shaft is rotatably arranged on the fixing bracket.

[0016] In an optional embodiment, the cleaning assembly also comprises: a second driving mechanism, wherein the second driving mechanism is used to drive at least one of the first roller shaft and the second roller shaft to rotate.

[0017] In a second aspect, an embodiment of the present invention provides a surface cleaning device which comprises a cleaning assembly described in the above embodiment.

[0018] In an optional embodiment, the surface cleaning device further comprises a cleaning head, wherein the cleaning assembly is arranged on the cleaning head, and the cleaning head is movable. During movement of the cleaning head, the cleaning head drives the cleaning assembly in a direction close to or away from a surface to be cleaned.

[0019] In the cleaning assembly in the embodiments of the present invention, the first roller shaft and the second roller shaft are rotatably arranged on the mounting bracket, and the cleaning element is sleeved on the first roller shaft and the second roller shaft, the cleaning element rotates in the same direction as the first roller shaft and the second roller shaft rotate. In cleaning process, tension force of the cleaning element can be changed in a way that the pressurizing element abuts against the cleaning element, which can increase pressure between the cleaning element and the surface to be cleaned, increase friction between the cleaning element and the surface to be cleaned, increase contact area between the cleaning element and the surface to be cleaned, enhance cleaning effect of the cleaning element on the surface to be cleaned, and improve cleaning efficiency; In process of replacing the cleaning element, the tension force of the cleaning element can be changed by the pressurizing element, which facilitates replacement and disassembly of the cleaning element.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a schematic structural view of a cleaning assembly in an embodiment of the present invention;

FIG. 2 is a schematic view of a pressurizing element away from the cleaning element in an embodiment of the present invention;

FIG. 3a is a schematic view of a first pressurizing roller shaft and a second pressurizing roller shaft abutting against the cleaning element in an embodiment of the present invention;

FIG. 3b is a schematic view of the second pressurizing roller shaft abutting against the cleaning element in an embodiment of the present invention;

FIG. 4 is a schematic view of setting of a cover plate in an embodiment of the present invention;

FIG. 5 is a schematic exploded view of the cleaning assembly in an embodiment of the present invention;

FIG. 6 is a schematic view of cooperation between a limiting part and the first pressurizing roller shaft;

FIG. 7 is a schematic view of cooperation between a protruding part and a limiting plate;

FIG. 8 is a schematic view of cooperation between the protruding part and a guide groove;

FIG. 9a is a schematic structural view of the pressurizing element;

FIG. 9b is a side view of the pressurizing element;

FIG. 10a is a schematic structural view of the second pressurizing roller shaft; FIG. 10b is a side view of the second pressurizing roller shaft;

FIG. Ila is another structural schematic view of the second pressurizing roller shaft;

FIG. 11b is another side view of the second pressurizing roller shaft;

FIG. 12a is another schematic structural view of the second pressurizing roller shaft;

FIG. 12b is another side view of the second pressurizing roller shaft;

FIG. 13 is a schematic structural view of a surface cleaning device in an embodiment of the present invention;

FIG. 14 is another schematic structural view of the surface cleaning device in an embodiment of the present invention.

[0021] Parts denoted by reference numbers mounting bracket 10; fixing seat 11; rotating shaft 12; connecting plate 13; positioning bolt 14; bearing 15; collar 16; first roller shaft 20; first positioning bolt 21; first collar 22; third collar 23; first driving motor 24; first motor cover 25; second roller shaft 30; second positioning bolt 31; second collar 32; fourth collar 33; second driving motor 34; second motor cover 35; cleaning element 40; pressurizing element 50; first pressurizing roller shaft 51; second pressurizing roller shaft 52; connecting seat 53; roller shaft body 54; fixing bracket 60; elastic element 61; protruding part 62; limiting part 63; guide groove 64; limiting plate 65; avoidance groove 66; rotation shaft 67; cover plate 70; raised structure 71; first bearing 101; second bearing 102; third bearing 601; fourth bearing 602; third positioning bolt 521; fifth bearing 522; fifth collar 523; fourth positioning bolt 524; sixth bearing 525; sixth collar 526; cleaning head 80; machine body 90; traveling wheel 91; handle 92.

DETAILED DESCRIPTION

[0022] Technical solutions in embodiments of the present invention will be clearly and completely described in following with reference to accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments in the present invention, all other embodiments obtained by an ordinary person skilled in the art without creative efforts fall within the protection scope of the present invention.

[0023] The terms “first”, “second” and the like in the description and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used can be interchanged under appropriate circumstances such that the embodiments of the present invention can be practiced in sequences other than those illustrated or described herein. In addition, “and/or” in the specification and claims means at least one of the connected objects, and a character “/” generally means that the related objects are in an “or” relationship.

[0024] As shown in FIGS. 1 to 8, a cleaning assembly of an embodiment of the present invention comprises: a mounting bracket 10, a first roller shaft 20, a second roller shaft 30, a cleaning element 40 and a pressurizing element 50, wherein the first roller shaft 20 and the second roller shaft 30 are rotatably arranged on the mounting bracket 10, the first roller shaft 20 and the second roller shaft 30 can be arranged parallel to each other. Mounting holes may be provided on the mounting bracket 10, the first roller shaft 20 and the second roller shaft 30 may be disposed in the corresponding mounting holes, and the first roller shaft 20 and the second roller shaft 30 may rotate in the corresponding mounting holes. Bearings may be disposed in the mounting holes, the first roller shaft 20 and the second roller shaft 30 may be disposed in the corresponding bearings, and the first roller shaft 20 and the second roller shaft 30 may rotate in the corresponding bearings. The mounting bracket 10 can support the first roller shaft 20 and the second roller shaft 30 to rotate stably, so that the cleaning element 40 can rotate stably.

[0025] The cleaning element 40 can be a material that can be used for cleaning, such as brush cloth and rubber. The cleaning element 40 can be a crawler type, the cleaning element 40 can be sleeved on the first roller shaft 20 and the second roller shaft 30, and the cleaning element 40 can rotate in the same direction as the first roller shaft 20 and the second roller shaft 30 rotate. In cleaning process, the cleaning element 40 is driven to rotate by the first roller shaft 20 and the second roller shaft 30, so that outer peripheral surface of the cleaning element 40 can be in contact with a surface to be cleaned to realize cleaning function, wherein the cleaning element 40 has a larger contact area with the surface to be cleaned. Outer surfaces of the first roller shaft 20 and the second roller shaft 30 can be provided with anti-slip structures, such as anti-slip grooves or anti-slip bosses, and the first roller shaft 20 and the second roller shaft 30 can be relatively rough cylinders, or can be an irregular cylindrical body, so as to stably drive the cleaning element 40 to rotate and prevent the cleaning element 40 from falling off.

[0026] A specific shape of the pressurizing element 50 can be selected according to actual situation. For example, the pressurizing element 50 can be in shape of a plate, a round rod, a cylinder or in other shapes. As shown in FIGS. 9a and 9b, the pressurizing element 50 can be in a shape of a roller shaft. The pressurizing element 50 may be a smooth cylinder, a relatively rough cylinder, or an irregular cylinder-like body. The pressurizing element 50 is arranged between the first roller shaft 20 and the second roller shaft 30, the pressurizing element 50 abuts against the cleaning element 40, tension force of the cleaning element 40 can be changed by the pressurizing element 50, and the pressurizing element 50 can abut against an area where the cleaning element 40 does not contact the first roller shaft 20 and the second roller shaft 30 to change the tension force of the cleaning element 40. In cleaning process, the tension force of the cleaning element 40 can be changed in a way that the pressurizing element 50 abuts against the cleaning element 40, pressure between the cleaning element 40 and the surface to be cleaned can be increased, and frictional force between the cleaning element 40 and the surface to be cleaned can be improved, contact area and contact time between the cleaning element 40 and the surface to be cleaned can be increased, cleaning effect of the cleaning element on the surface to be cleaned can be increased, and cleaning efficiency can be increased. In process of replacing the cleaning element, the tension force of the cleaning element can be changed through the pressurizing element 50, which facilitates replacement and disassembly of the cleaning element.

[0027] In some embodiments of the present invention, there can be one or more pressurizing elements 50, and the pressurizing elements 50 can abut against or move away from the outer peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40. The pressurizing element 50 located on the outer peripheral surface of the cleaning element 40 can make the cleaning element 40 tense when it abuts against the outer peripheral surface of the cleaning element 40, increase the contact area and contact time between the cleaning element 40 and the surface to be cleaned, and strengthen the cleaning effect of the cleaning element 40 on the surface to be cleaned. The pressurizing element 50 located on the outer peripheral surface of the cleaning element 40 can loosen the cleaning element 40 when it moves away from the outer peripheral surface of the cleaning element 40, so as to facilitate the disassembly of the cleaning element 40.

[0028] In some embodiments of the present invention, the quantity of the pressurizing element 50 can be multiple, at least one pressurizing element 50 can abut against or move away from the outer peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40, at least one pressurizing element 50 can abut against or move away from an inner peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40. The pressurizing element 50 located on the outer peripheral surface of the cleaning element 40 can make the cleaning element 40 tense when it abuts against the outer peripheral surface of the cleaning element 40, and the pressurizing element 50 located on the outer peripheral surface of the cleaning element 40 can make the cleaning element 40 loose when it moves away from the outer peripheral surface of the cleaning element 40 to facilitate the disassembly of the cleaning element 40. When the pressurizing element 50 on the inner peripheral surface of the cleaning element 40 abuts against the inner peripheral surface of the cleaning element 40, the pressure between the cleaning element 40 and the surface to be cleaned can also be increased, the contact area and the contact time between the cleaning element 40 and the surface to be cleaned can be increased, and the cleaning effect of the cleaning element 40 on the surface to be cleaned can be enhanced. [0029] In some embodiments, the number of the pressurizing element 50 may be one or more, and when the number of the pressurizing element 50 is one, the pressurizing element 50 may be arranged between the first roller shaft 20 and the second roller shaft 30, the pressurizing element 50 can abut against the inner peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40 so as to increase the pressure between the outer peripheral surface of the cleaning element 40 and the surface to be cleaned during cleaning process. When the number of pressurizing elements 50 is multiple, a plurality of pressurizing elements 50 can abut against the inner peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40, and the plurality of pressurizing elements 50 can be arranged at intervals, and pressure exerted by each pressurizing element 50 on the cleaning element 40 can be the same or different based on needs.

[0030] When multiple pressurizing elements 50 exert the same pressure on the cleaning element 40, the pressure in different areas of the cleaning element 40 can be made uniform by the plurality of pressurizing elements 50, for example, when cleaning flat surfaces such as floors, tiles, walls and glass, an even cleaning can be ensured. When the pressures exerted by the plurality of pressurizing elements 50 on the cleaning element 40 are different, the pressures in different areas of the cleaning element 40 can be made different by use of the plurality of pressurizing elements 50. The shape of the cleaning element 40 can be changed by the plurality of pressurizing elements 50 to meet cleaning of different positions or scenes. For example, when cleaning corners, pressure can be exerted on the cleaning element 40 by the pressurizing element 50 to change the shape of the cleaning element 40 so that the cleaning element 40 can be placed in the comer to achieve cleaning. For example, the quantity of the pressurizing element 50 can be three, and when cleaning the corner, the three pressurizing elements 50 can abut against the inner peripheral surface of the cleaning element 40, and one of the pressurizing elements 50 can abut against the inner peripheral surface of the cleaning element 40 so that a part area of the cleaning element 40 contact a horizontal surface, and one of the pressurizing elements 50 can abut against the inner peripheral surface of the cleaning element 40 so that a part area of the cleaning element 40 contacts surface of the comer, making the cleaning element 40 easy to clean the surface of the corner area, increasing the contact area and pressure between the cleaning element 40 and the surface to be cleaned. When a pressure is applied to the cleaning element 40 by the pressurizing element 50, the pressure between the cleaning element 40 and the surface to be cleaned can be increased, and the shape of the cleaning element 40 can also be changed to meet cleaning needs of the surface to be cleaned with different shapes and sizes.

[0031] In some embodiments, at least one of the first roller shaft 20 and the second roller shaft 30 can move, and during movement of at least one of the first roller shaft 20 and the second roller shaft 30, the first roller shaft 20 is relatively close to or far away from the second roller shaft 30, and distance between the first roller shaft 20 and the second roller shaft 30 can be adjusted, so that the tension force of the cleaning element 40 can be adjusted. Both the first roller shaft 20 and the second roller shaft 30 can move, and through movement of the first roller shaft 20 and the second roller shaft 30, the first roller shaft 20 is close to or far away from the second roller shaft 30 to adjust the distance between the roller shaft 20 and the second roller shaft 30, so that the tension force of the cleaning element 40 can be adjusted. In a way that the first roller shaft 20 is relatively close to or far away from the second roller shaft 30, the installation and disassembly of the cleaning element 40 are facilitated. When the cleaning element 40 needs to be disassembled, the first roller shaft 20 and the second roller shaft 30 can be relatively close to each other, to make the cleaning element 40 loose, easy to be disassembled from the roller shaft, a new cleaning element 40 or the cleaning element after cleaning is sleeved on the first roller shaft 20 and the second roller shaft 30, then make the first roller shaft 20 and the second roller shaft 30 relatively far away from each other, so that the cleaning element 40 is tensioned to prevent the cleaning element 40 from falling off.

[0032] The first roller shaft 20 and the second roller shaft 30 can be in two situations. Under a first situation, relative distance between centers of the first roller shaft 20 and the second roller shaft 30 is kept fixed, so that the cleaning element is in a tensioned state; Under a second situation, one or both of the first roller shaft 20 and the second roller shaft 30 can move relative to each other, so that center distance between the first roller shaft 20 and the second roller shaft 30 is reduced, so that the cleaning element is in a relaxed state. In an optional embodiment, a process of reducing the center distance between the first roller shaft 20 and the second roller shaft 30 may be dynamic rather than fixed.

[0033] In some other embodiments, as shown in FIGS. 1 to 2, the pressurizing element 50 is movable. During movement of the pressurizing element 50, the pressurizing element 50 can abut against or move away from the cleaning element 40. Through movement of the pressurizing element 50, the contact area between the pressurizing element 50 and the cleaning element 40 can be increased or decreased, so as to generate different pressures on the cleaning element 40, so that the cleaning element 40 is in different tension states. The pressurizing element 50 can turn over, slide, move or rotate, so that the pressurizing element 50 can abut against or move away from the cleaning element 40. As shown in FIG. 1, in cleaning process, if large cleaning force is required, the pressurizing element 50 can abut against the cleaning element 40. For example, when cleaning hard-to-clean surfaces such as floors, glass, tiles, walls, etc., the pressurizing element 50 can abut against the cleaning element 40, the tension force of the cleaning element 40 can be changed through the pressurizing element 50, the pressure between the surface of the cleaning element 40 and the surface to be cleaned can be increased, and the cleaning effect and cleaning efficiency can be improved. As shown in FIG. 2, if a large cleaning force is not required, the pressurizing element 50 can be kept away from the cleaning element 40 so as to avoid damage to the surface to be cleaned by large cleaning force.

[0034] In embodiments of the present invention, as shown in FIG. 1, FIG. 2 and FIG. 5, the cleaning assembly may further comprise a fixing seat 11, wherein the pressurizing element 50 may be arranged on the fixing seat 11, and the fixing seat 11 may be rotatably arranged on the mounting bracket 10. During rotation of the fixing seat 11, the fixing seat 11 drives the pressurizing element 50 to abut against or move away from the cleaning element 40. The fixing seat 11 and the mounting bracket 10 can be connected by a rotating shaft 12. For example, the mounting bracket 10 is provided with a rotating hole, and the rotating shaft 12 on the fixing seat 11 is rotatably installed in the rotating hole, so that the fixing seat 11 is easy to rotate, so that the fixing seat 11 can drive the pressurizing element 50 to abut against or move away from the cleaning element 40, and the pressurizing element 50 can abut against or move away from the cleaning element 40 according to different usage scenarios or requirements. A connecting plate 13 may be provided on the rotating shaft 12, and the fixing seat 11 may be connected to the connecting plate 13. The positioning bolt 14 can be inserted and fixed in one end of the pressurizing element 50. For example, the positioning bolt 14 can be inserted and fixed in one end of a first pressurizing roller shaft 51. A bearing 15 is sleeved on the positioning bolt 14 and fixed on the fixing seat 11 by a collar 16. [0035] Optionally, the cleaning assembly may further comprise a first driving mechanism which may be used to drive the pressurizing element 50 to move, and the first driving mechanism may drive the pressurizing element 50 to approach or move away from the cleaning element 40, and the pressurizing element 50 may comprise the first pressurizing roller shaft 51, and the first driving mechanism may drive the first pressurizing roller shaft 51 to move away from the cleaning element 40. The first driving mechanism can comprise a driving motor, an electromagnet, etc., for example, a drive shaft of the driving motor can be connected with the pressurizing element 50, and the pressurizing element 50 can be driven by the driving motor to move, so as to drive the pressurizing element 50 to approach or move away from the cleaning element 40. For example, the first driving mechanism may comprise an electromagnet, and the pressurizing element 50 may have a magnetic element, or the pressurizing element 50 may be a magnetic element, and when an electric current is input to a coil of the electromagnet, there is a magnetic force between the electromagnet and the magnetic element, the pressurizing element 50 can be driven to move by the magnetic force, so as to drive the pressurizing element 50 to approach or move away from the cleaning element 40. When an electric current in different directions is input into the coil of the electromagnet, magnetic direction of the electromagnet is different. For example, when an electric current in a first direction is input into the coil of the electromagnet, the electromagnet and the magnetic element magnetically attract each other, the pressurizing element 50 can be driven to move by the magnetic force, so as to drive the pressurizing element 50 to abut against the cleaning element 40; when an electric current in a second direction is input into the coil of the electromagnet, the electromagnet and the magnetic element are magnetically repelled, the pressurizing element 50 can be driven to move by the magnetic force, so as to drive the pressurizing element 50 to move away from the cleaning element 40.

[0036] In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 5 to FIG. 8, the first driving mechanism may comprise a fixing bracket 60, an elastic element 61, a protruding part 62 and a limiting part 63, wherein the elastic element 61 may be arranged on the fixing bracket 60; the elastic element 61 can be a metal shrapnel, a spring or a rubber elastic element, etc., and shape of the elastic element 61 can be reasonably selected according to matching requirements. The protruding part 62 can be disposed on the elastic element 61, for example, a bottom of the protruding part 62 can be disposed on the top of the elastic element 61. The limiting part 63 can abut against or move away from the pressurizing element 50. When the limiting part 63 abuts against the pressurizing element 50, the limiting part 63 can limit movement of the pressurizing element 50, and the elastic element 61 is in a compressed state, the protruding part 62 is located between the pressurizing element 50 and the elastic element 61, the pressurizing element 50 abuts against the cleaning element 40, the movement of the pressurizing element 50 can be restricted by the limiting part 63, so that the pressurizing element 50 compresses the elastic element 61, and that the elastic element 61 cannot drive the pressurizing element 50 to move away from the cleaning element 40. When the limiting part 63 disengages from the pressurizing element 50, the limiting part 63 does not restrict the movement of the pressurizing element 50, the pressurizing element 50 can move, the elastic element 61 can drive the protruding part 62 to move, and the protruding part 62 can drive the pressurizing element 50 to move away from the cleaning element 40. When the limiting part 63 abuts against the pressurizing element 50, the elastic element 61 is in a compressed state, and the elastic element 61 has a certain elastic force. When the limiting part 63 disengages from the pressurizing element 50, the elastic element 61 can drive the pressurizing element 50 to move away from the cleaning element 40 through the protruding part 62.

[0037] The rotating shaft 67 can be fixed on the fixing bracket 60, the limiting part 63 can be sleeved on the rotating shaft 67, and the limiting part 63 can rotate around the rotating shaft 67. The elastic element 61 can be a spring, and the protruding part 62 can be provided with a protruding end, a matching groove or a sinking platform, and the top of the spring can be connected with the protruding end, the matching groove or the sinking platform on the protruding part 62. The protruding part 62 can be provided with a pin, and the pin goes through the top of the spring and is connected with the spring, so that the spring and the protruding part 62 can be stably matched, so that the protruding part 62 can move stably, so that the protruding part 62 can stably drive the pressurizing element 50 to move away from the cleaning element 40.

[0038] Optionally, the limiting part 63 can abut against or disengage from the pressurizing element 50, the limiting part 63 can be engaged with or disengaged from the pressurizing element 50, the limiting part 63 can have a first engaging part, and the pressurizing element 50 can have a second engaging part, and the first engaging part and the second engaging part can be engaged or disengaged. When the first engaging part and the second engaging part are engaged, the limiting part 63 can limit the movement of the pressurizing element 50; when the first engaging part is disengaged from the second engaging part, the limiting part 63 does not limit the movement of the pressurizing element 50. The first engaging part can be a buckle, the second engaging part can be an engaging groove, or the first engaging part can be an engaging groove, and the second engaging part can be a buckle, and it is convenient to realize engaging and disengaging through cooperation between the buckle and the engaging groove. The pressurizing element 50 may be a pressurizing roller shaft, the second engaging part may comprise an engaging post, and the engaging post may be arranged at an end of the pressurizing roller shaft near the limiting part 63, and the first engaging part may comprise an engaging groove. Position-limiting cooperation between the limiting part 63 and the pressurizing element 50 can be facilitated through cooperation between the engaging post and the engaging groove.

[0039] Optionally, as shown in FIGS. 6 to 8, a guide groove 64 may be provided on the fixing bracket 60, the elastic element 61 and the protruding part 62 may be arranged in the guide groove 64, and the protruding part 62 may move in the guide groove 64, the elastic element 61 can be deformed stably through the guide groove 64, for example, the elastic element 61 is a spring, and the spring can be stretched stably through the guide groove 64. The protruding part 62 can be guided by the guide groove 64, so that the protruding part 62 can move in a direction close to or away from the pressurizing element 50, so that the protruding part 62 can stably drive the pressurizing element 50 to move away from the cleaning element 40.

[0040] Optionally, as shown in FIGS. 6 to 7, the first driving mechanism may further comprise a limiting plate 65, wherein the limiting plate 65 may be arranged on the fixing bracket 60, and the protruding part 62 may be arranged between the limiting plate 65 and the fixing bracket 60, the protruding part 62 can be limited and guided by the limiting plate 65 and the fixing bracket 60, so that the protruding part 62 can move stably. The guide groove 64 can be a groove with an opening on one side, and the limiting plate 65 can be arranged opposite to the opening of the groove, and the protruding part 62 can stably drive the pressurizing element 50 to move away from the cleaning element 40 through the limiting plate 65 and the groove.

[0041] Optionally, as shown in FIGS. 6 to 7, an avoidance groove 66 may be provided at a position of the limiting plate 65 corresponding to the pressurizing element 50. The avoidance groove 66 can be a U-shaped groove, and the shape and size of the avoidance groove 66 can match the shape and size of corresponding area of the pressurizing element 50 so as to avoid the pressurizing element 50. For example, the pressurizing element 50 is a round roller, and the avoidance groove 66 may be a U-shaped groove so as to avoid the pressurizing element 50. An elastic layer can be provided in an area of an inner side wall of the avoidance groove 66 corresponding to the pressurizing element 50, and the elastic layer can have a buffering effect to prevent collision damage between the pressurizing element 50 and the limiting plate 65.

[0042] In some embodiments, the pressurizing element 50 comprises a first pressurizing roller shaft 51 abutting against the outer periphery of the cleaning element 40. The first pressurizing roller shaft 51 abuts against an outer surface of the cleaning element 40 so that the outer surface of the cleaning element 40 remains in contact with the surface to be cleaned. The first pressurizing roller shaft 51 can make the cleaning element 40 tense when it abuts against the outer peripheral surface of the cleaning element 40, and the first pressurizing roller shaft 51 can make the cleaning element 40 loose when it moves away from the outer peripheral surface of the cleaning element 40 so as to facilitate the disassembly of the cleaning element 40.

[0043] Optionally, as shown in FIG. 3 a, the pressurizing element 50 further comprises a second pressurizing roller shaft 52 that abuts against an inner periphery of the cleaning element 40 close to the surface to be cleaned. The second pressurizing roller shaft 52 can abut against the inner peripheral surface of the cleaning element 40, and can apply pressure in a direction from the inner peripheral surface of the cleaning element 40 to the outside of the cleaning element 40, so as to change the pressure between the cleaning element 40 and the surface to be cleaned, can increase the pressure between the cleaning element 40 and the surface to be cleaned, increase the contact area and contact time between the cleaning element 40 and the surface to be cleaned, and improve the cleaning effect and efficiency.

[0044] In some embodiments, as shown in FIG. 3b, the pressurizing element 50 comprises a second pressurizing roller shaft 52 abutting against the inner peripheral surface of the cleaning element 40. The second pressurizing roller shaft 52 abuts against the inner peripheral surface of the cleaning element 40 so as to increase the pressure between the outer peripheral surface of the cleaning element 40 and the surface to be cleaned during cleaning process.

[0045] In some embodiments, the pressurizing element 50 is disposed between the first roller shaft 20 and the second roller shaft 30, and the outer and/or inner periphery of the cleaning element 40 may be provided with the pressurizing element 50. The first pressurizing roller shaft 51 and the second pressurizing roller shaft 52 are disposed between the first roller shaft 20 and the second roller shaft 30. The quantity of the pressurizing element 50 can be one or more, and when the quantity of the pressurizing element 50 is one, the pressurizing element 50 can abut against the inner peripheral surface or the outer peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40. When the pressurizing element 50 abuts against the inner peripheral surface of the cleaning element 40, the pressure between the surface of the cleaning element 40 and the surface to be cleaned can be increased during cleaning process. When the number of pressurizing elements 50 is multiple, at least one pressurizing element 50 can abut against the inner peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40, which can increase the pressure between the surface of the cleaning element 40 and the surface to be cleaned; the at least one pressurizing element 50 can abut against the outer peripheral surface of the cleaning element 40 to change the tension force of the cleaning element 40, which can facilitate the disassembly and assembly of the cleaning element 40. A plurality of pressurizing elements 50 can be arranged at intervals, and the pressure between the cleaning element 40 and the surface to be cleaned can be changed through the plurality of pressurizing elements 50, so as to improve the cleaning effect and efficiency, and facilitate the disassembly and assembly of the cleaning element 40. At least one pressurizing element 50 can abut against the inner peripheral surface of the cleaning element 40, can apply pressure in a direction from the inner peripheral surface of the cleaning element 40 to the outside of the cleaning element 40, and at least one pressurizing element 50 can abut against the outer periphery surface of the cleaning element 40, pressure can be applied in a direction from the outer peripheral surface of the cleaning element 40 to the inside of the cleaning element 40, so as to change the pressure between the cleaning element 40 and the surface to be cleaned, and improve the cleaning effect and efficiency.

[0046] In an embodiment of the present invention, the pressurizing element 50 may comprise a first pressurizing roller shaft 51 that abuts against the outer periphery of the cleaning element 40, and the pressurizing element 50 may also comprise a second pressurizing roller shaft 52 that abuts against the inner periphery of the cleaning element 40 close to the surface to be cleaned. As shown in FIGS. 3a to 5, the pressurizing element 50 comprises a first pressurizing roller shaft 51 and a second pressurizing roller shaft 52, wherein the first pressurizing roller shaft 51 abuts against the outer surface of the cleaning element 40, and the second pressurizing roller shaft 52 abuts against the inner surface of the cleaning element 40 so that the outer surface of the cleaning element 40 remains in contact with the surface to be cleaned. The first pressurizing roller shaft 51 can abut against the outer peripheral surface of the cleaning element 40, and can apply pressure in a direction from the outer peripheral surface of the cleaning element 40 to the inside of the cleaning element 40 so as to change the tension force of the cleaning element 40. The first pressurizing roller shaft 51 can make the cleaning element 40 tense when it abuts against the outer peripheral surface of the cleaning element 40, and the first pressurizing roller shaft 51 can make the cleaning element 40 loose when it moves away from the outer peripheral surface of the cleaning element 40, so as to facilitate the disassembly of the cleaning element 40. The second pressurizing roller shaft 52 can abut against the inner peripheral surface of the cleaning element 40, and can apply pressure in a direction from the inner peripheral surface of the cleaning element 40 to the outside of the cleaning element 40, so as to change the pressure between the cleaning element 40 and the surface to be cleaned, can increase the pressure between the cleaning element 40 and the surface to be cleaned, increase the contact area and contact time between the cleaning element 40 and the surface to be cleaned, and improve the cleaning effect and efficiency.

[0047] In some embodiments, the second pressurizing roller shaft 52 comprises a cylindrical body, an outer wall of the cylindrical body has at least one contact plane, and the contact plane abuts against the inner periphery of the cleaning element 40. As shown in FIG. 10a and FIG. 10b, the second pressurizing roller shaft 52 may comprise a cylindrical body, a cross section of the cylindrical body may be triangular or quasi-triangular, and there is at least one contact plane on the outer wall of the cylindrical body, such as, the outer wall of the cylindrical body has three contact planes, and one of the contact planes can be selected to abut against the inner peripheral surface of the cleaning element 40 to increase the contact area between the second pressurizing roller shaft 52 and the inner peripheral surface of the cleaning element 40. The cylindrical body can rotate or not rotate, which can be selected according to actual conditions.

[0048] Optionally, the second pressurizing roller shaft 52 may comprise a connecting seat 53 and a plurality of roller shaft bodies 54 arranged on the connecting seat 53, for example, two roller shaft bodies 54 are arranged on the connecting seat 53, and the plurality of roller shaft bodies 54 are arranged in parallel at intervals, the roller shaft bodies 54 abut against the inner periphery of the cleaning element 40, and pressure is more stably applied to the cleaning element 40 through the roller shaft body 54. As shown in FIGS. Ila to 12b, the second pressurizing roller shaft 52 can comprise a connecting seat 53 and at least one roller shaft body 54, the roller shaft body 54 is arranged on the connecting seat 53, and length of the roller shaft body 54 can be selected according to actual conditions, the roller shaft body 54 may be in the shape of a wheel. The roller shaft body 54 may not rotate or rotate on the connecting seat 53, and an outer wall of the roller shaft body 54 may abut against the inner peripheral surface of the cleaning element 40 to increase the pressure between the cleaning element 40 and the surface to be cleaned. The number of the roller shaft body 54 can be multiple, for example, the number of the roller shaft body 54 can be two, and the plurality of roller shaft bodies 54 can be arranged in parallel at intervals, and specific interval distance can be selected according to the actual situation. The connecting seat 53 can be a cylindrical body, the roller shaft body 54 can be arranged parallel to the connecting seat 53, and the roller shaft body 54 can be parallel to the first roller shaft 20 and the second roller shaft 30. The roller shaft body 54 can be detachably mounted on the connecting seat 53, and the roller shaft body 54 and the connecting seat 53 can also be integrally formed. Specific structure of the first pressurizing roller shaft 51 and the pressurizing element 50 may be the same as that of the above-mentioned second pressurizing roller shaft 52.

[0049] As shown in FIGS. Ila to 12b, the connecting seat 53 can be a cylindrical body, and two ends of the connecting seat 53 can have cylindrical shaft seats, and axis of the shaft seats and the axis of the connecting seat 53 can be collinear or parallel. The roller shaft body 54 can be arranged between two shaft seats, and two ends of the roller shaft body 54 can be connected with corresponding shaft seats. An orthographic projection of the roller shaft body 54 on a first plane and an orthographic projection of the shaft seat on the first plane may partially overlap, and the first plane is a plane perpendicular to the roller shaft body 54. Non-overlapping portion of the orthographic projection of the roller shaft body 54 on the first plane and the orthographic projection of the shaft seat on the first plane has an arc edge, and two arc-shaped edges can be located on both sides of the orthographic projection of the shaft seat on the first plane, the two arc-shaped edges can be symmetrical about the orthographic projection of the shaft seat on the first plane, one arc-shaped edge can be concentric with the orthographic projection of the first roller shaft 20 on the first plane, and the other arc-shaped edge can be concentric with the orthographic projection of the second roller shaft 30 on the first plane.

[0050] The lowest point of the second pressurizing roller shaft 52 where it contacts the cleaning element 40 and the lowest point of the first roller shaft 20 and the second roller shaft 30 where they contact the cleaning element 40 are in the same level, or a height difference between them is within 10 mm. The first pressurizing roller shaft 51 can have two states. In a first state, the lowest point of the roller body where the first pressurizing roller shaft 51 is in contact with the outer surface of the cleaning element 40 can be no higher than a connecting line of the contact points where the first roller shaft 20 and the second roller shaft 30 are connected with the inner surface of the cleaning element 40, so that the cleaning element 40 can be in a tensioned state; in a second state, the first pressurizing roller shaft 51 can turn over or slide, contact area between the pressurizing roller shaft 51 and the outer surface of the cleaning element 40 can be reduced by turning over or sliding, making the cleaning element in a relaxed state. The first pressurizing roller shaft 51 and the second pressurizing roller shaft 52 may be smooth cylinders, relatively rough cylinders, or irregular cylinder-like bodies.

[0051] Optionally, the pressurizing element 50 may comprise a pressurizing roller shaft, and the pressurizing roller shaft and the first roller shaft 20 and the second roller shaft 30 may be parallel to each other, and the first roller shaft 20 and the second roller shaft 30 may be parallel to each other so that the cleaning element 40 rotates stably along with the roller shafts, and the pressurizing roller shaft and the first roller shaft 20 and the second roller shaft 30 are parallel to each other so as to apply pressure stably, so that the cleaning element 40 is in stable contact with the surface to be cleaned, which is conducive to keep cleaning force even and stable. The pressurizing element 50 can comprise a pressurizing roller shaft, which can rotate or not rotate. If the pressurizing roller shaft does not rotate, load on the driving motor will increase slightly. If the pressurizing roller shaft rotates, the cleaning effect will be slightly worse, and the load on the driving motor will decrease. Therefore, it can be preferred that the pressurizing roller shaft does not rotate. The pressurizing element 50 may comprise a first pressurizing roller shaft 51 and a second pressurizing roller shaft 52, at least one of the first pressurizing roller shaft 51 and the second pressurizing roller shaft 52 can rotate, for example, the second pressurizing roller shaft 52 can rotate, and the load on the driving motor is reduced.

[0052] In some embodiments, the outer surface of the pressurizing element 50 can be provided with raised structures distributed at intervals, the raised structures can be uniformly distributed on the outer surface of the pressurizing element 50, and the raised structures can be tooth-shaped, cylindrical, polygonal body and other structures, the cleaning elements can be combed through the raised structure, and hair and flocs on the cleaning elements can be collected and gathered.

[0053] In some other embodiments, as shown in FIG. 4, the cleaning assembly may further comprise a cover plate 70, which may be arranged adjacent to the outer surface of the cleaning element 40, and a side of the cover plate 70 facing the cleaning element 40 is provided with raised structures 71 distributed at intervals. The raised structures can be evenly distributed on a surface of the cover plate 70, and the raised structures can be structures such as a tooth, a cylinder or a polygon, and the cleaning element can be combed through the raised structures to realize collection and gathering of hair and flocs on the cleaning element. The cover plate 70 can move, and the cover plate 70 can be made to move close to or away from the outer surface of the cleaning element 40 through movement of the cover plate 70. In cleaning process, when it is necessary to collect hair and flocs on the cleaning element, the cover plate 70 can be made to move close to the outer surface of the cleaning element 40 to realize collection and gathering of hair and flocs on the cleaning element; When it is not necessary to collect hair and flocs on the cleaning element, the cover plate 70 can be kept away from the outer surface of the cleaning element 40.

[0054] In some embodiments, as shown in FIGS. 1 to 5, the cleaning assembly may further comprise a fixing bracket 60, wherein one end of the first roller shaft 20 is rotatably arranged on the mounting bracket 10, and the other end of the first roller shaft 20 is rotatably arranged on the fixing bracket 60; one end of the second roller shaft 30 is rotatably arranged on the mounting bracket 10, and the other end of the second roller shaft 30 is rotatably arranged on the fixing bracket 60. A first bearing 101 and a second bearing 102 can be arranged on the mounting bracket 10, and a third bearing 601 and a fourth bearing 602 can be arranged on the fixing bracket 60. One end of the first roller shaft 20 is rotatably arranged on the first bearing 101, and the other end of the first roller shaft 20 is rotatably arranged on the third bearing 601; one end of the second roller shaft 30 is rotatably arranged on the second bearing 102, the other end of the second roller shaft 30 is rotatably arranged on the fourth bearing 602, and the roller shafts can rotate stably through the bearings.

[0055] As shown in FIG. 5, a first positioning bolt 21 can be inserted and fixed in one end of the first roller shaft 20, the first bearing 101 can be sleeved on the first positioning bolt 21, and can be fixed on the mounting bracket 10 through a first collar 22, the other end of the first roller shaft 20 is rotatably arranged on the third bearing 601, and the third bearing 601 can be fixedly assembled on the fixing bracket 60 through a third collar 23. The other end of the first roller shaft 20 can be connected with a first driving motor 24 to drive the first roller shaft 20 to rotate by the first driving motor 24. A first motor cover 25 may be provided on the first driving motor 24 to protect the first driving motor 24. A second positioning bolt 31 can be inserted and fixed in one end of the second roller shaft 30, the second bearing 102 can be sleeved on the second positioning bolt 31, and can be fixed on the mounting bracket 10 through a second collar 32. The other end of the second roller shaft 30 is rotatably disposed on the fourth bearing 602, and the fourth bearing 602 can be fixedly assembled on the fixing bracket 60 through a fourth collar 33. The other end of the second roller shaft 30 can be connected with a second driving motor 34 to drive the second roller shaft 30 to rotate by the second driving motor 34. A second motor cover 35 may be provided on the second driving motor 34 to protect the second driving motor 34.

[0056] As shown in FIG. 5, a third positioning bolt 521 can be inserted and fixed in one end of the second pressurizing roller shaft 52, a fifth bearing 522 can be sleeved on the third positioning bolt 521, and can be fixed on the mounting bracket 10 by a fifth collar 523. A fourth positioning bolt 524 can be inserted and fixed in the other end of the second pressurizing roller shaft 52, a sixth bearing 525 can be sleeved on the fourth positioning bolt 524, and can be fixed on the fixing bracket 60 through a sixth collar 526.

[0057] The cleaning assembly of an embodiment of the present invention may also comprise a second driving mechanism, which may be used to drive at least one of the first roller shaft 20 and the second roller shaft 30 to rotate, for example, the second driving mechanism may comprise a driving motor. At least one of the first roller shaft 20 and the second roller shaft 30 may be connected to the driving motor, and at least one of the first roller shaft 20 and the second roller shaft 30 may be driven by the driving motor. The driving motor can be connected with the first roller shaft 20 or the second roller shaft 30 so as to drive the first roller shaft 20 or the second roller shaft 30 to rotate, one roller shaft driven by the driving motor can be used as the driving roller shaft, and the other roller shaft can be used as a driven roller, rotation of the driving roller shaft can drive the cleaning element 40 to rotate, and the cleaning element 40 can drive the driven roller shaft to rotate. The first roller shaft 20 and the second roller shaft 30 can be respectively connected with a corresponding driving motor, and the first roller shaft 20 and the second roller shaft 30 rotate synchronously, and the rotation speed of the two should be kept the same, or the difference between them should not exceed 30%, so that the cleaning element 40 rotates stably and prevents the cleaning element 40 from falling off.

[0058] The first roller shaft 20 can be at least partially sleeved on the outside of the first driving motor 24, and the second roller shaft 30 can be at least partially sleeved on the outside of the second driving motor 34, and the roller shafts can be driven for transmission by the driving motors. The first driving motor 24 can be installed on the outside of the first roller shaft 20, and the second driving motor 34 can be installed on the outside of the second roller shaft 30, and the transmission can be realized by a belt or other means.

[0059] An embodiment of the present invention provides a surface cleaning device, which comprises a cleaning assembly described in the above embodiments. The surface cleaning device with the cleaning assembly of the above embodiments has good cleaning effect and high cleaning efficiency. The surface cleaning device can comprise a hand-held surface cleaning device and an automatic surface cleaning device. When the entire cleaning assembly is installed on a cleaning brush head, the first roller shaft 20, the second roller shaft 30, the first pressurizing roller shaft 51 and the second pressurizing roller shaft 52 are rotatably connected and fixed with the cleaning brush head.

[0060] In an embodiment of the present invention, the surface cleaning device may also comprise a cleaning head 80, the cleaning assembly is arranged on the cleaning head 80, and the cleaning head 80 is movable. During movement of the cleaning head 80, the cleaning head 80 drives the cleaning assembly in a direction close to or away from the surface to be cleaned. In cleaning process, the cleaning assembly can be driven by the cleaning head 80 to move in a direction close to the surface to be cleaned, so that the cleaning element 40 contacts the surface to be cleaned; after cleaning is completed, the cleaning assembly can be driven by the cleaning head 80 to move in a direction away from the surface to be cleaned, so that the cleaning element 40 moves away from the surface to be cleaned. As shown in FIGS. 13 and 14, the surface cleaning device can comprise a cleaning head 80 and a machine body 90, the cleaning head 80 can be arranged on the machine body 90, the cleaning assembly can be arranged on the cleaning head 80, and the mounting bracket 10 can be connected to the cleaning head 80, the fixing bracket 60 can be connected to the cleaning head 80. The cleaning head 80 can move, and the cleaning assembly can be driven to move through movement of the cleaning head 80. For example, the cleaning head 80 can move up or down. In process of cleaning, the cleaning assembly can be driven down through downward movement of the cleaning head 80 in order to facilitate the cleaning element 40 to contact the surface to be cleaned; after cleaning is completed, the cleaning assembly can be driven up through upward movement of the cleaning head 80, so that the cleaning element 40 moves away from the surface to be cleaned.

[0061] Traveling wheels 91 can be arranged on the machine body 90, and the surface cleaning device can easily move through the traveling wheels 91.

[0062] The surface cleaning device can be a hand-held surface cleaning device. As shown in FIG. 13, a handle 92 can be provided on the machine body 90 in the hand-held surface cleaning device, and the handle 92 is convenient for holding or pushing the cleaning device. The cleaning head 80 can be arranged at a bottom of the machine body 90, and the cleaning head 80 and the bottom of the machine body 90 can rotate relative to each other to adjust an inclination angle of the machine body 90 so as to push the traveling wheels 91 to move.

[0063] When the surface cleaning device is an automatic surface cleaning device, the automatic surface cleaning device may comprise a controlling module, and the controlling module may be used to control at least one of the first driving motor 24 and the second driving motor 34 to rotate, thereby controlling the first roller shaft 20 and the second roller shaft 30 to rotate, and then to be driven. The rotation speeds of the first driving motor 24 and the second driving motor 34 can be controlled by the controlling module, and the controlling module can control the rotation speeds of the first driving motor 24 and the second driving motor 34 to be the same or different. The cleaning head 80 can be controlled to move up or down by the controlling module, and the traveling wheel 91 can be controlled to rotate by the controlling module. The controlling module can control rotation of the traveling wheels 91 according to a set route or area, so that the automatic surface cleaning device can automatically clean. When the controlling module controls rotation of the traveling wheel 91, the controlling module can control at least one of the first driving motor 24 and the second driving motor 34 to rotate, so as to drive the cleaning element 40 to rotate, and clean the surface to be cleaned by the cleaning element 40.

[0064] The automatic surface cleaning device can comprise a state detector, by which a position state of the cleaning head 80 can be detected, and the state detector can detect a distance between the cleaning head 80 and the surface to be cleaned, and when the state detector detects that the distance between the cleaning head 80 and the surface to be cleaned is less than or equal to a first preset distance, the controlling module can control at least one of the first driving motor 24 and the second driving motor 34 to rotate, so that the cleaning element 40 rotates, and pressure between the outer peripheral surface of the cleaning element 40 and the surface to be cleaned is adjusted by the pressurizing element 50, so that the cleaning element 40 cleans the surface to be cleaned. When the state detector detects that the distance between the cleaning head 80 and the surface to be cleaned is greater than the first preset distance, the controlling module can control the first driving motor 24 and the second driving motor 34 to stop rotating.

[0065] The automatic surface cleaning device may comprise a pressure detector, which is used to detect pressure between the cleaning element 40 and the surface to be cleaned. The cleaning assembly may comprise a first driving mechanism, the first driving mechanism may drive the pressurizing element 50 to move close to or away from the cleaning element 40, when the pressure detector detects that pressure between the cleaning element 40 and the surface to be cleaned is less than or equal to a first pressure value, the controlling module can control the first driving mechanism to drive the pressurizing element 50 to move close to the cleaning element 40, so as to increase pressure between the cleaning element 40 and the surface to be cleaned, and increase cleaning effect; when the pressure detector detects that pressure between the cleaning element 40 and the surface to be cleaned is greater than a second pressure value, the controlling module can control the first driving mechanism to drive the pressurizing element 50 to move away from the cleaning element 40, and the second pressure value can be greater than the first pressure value to reduce pressure between the cleaning element 40 and the surface to be cleaned.

[0066] The controlling module can be used to control the rotation speed of at least one of the first driving motor 24 and the second driving motor 34 according to pressure between the cleaning element 40 and the surface to be cleaned, thereby adjusting rotation speed of the cleaning element 40.

[0067] In some embodiments, a cleaning liquid tank may be provided on the machine body 90, and the cleaning liquid tank may be used to store cleaning liquid and the like, and the cleaning liquid may comprise water or cleaning agent etc.. A sewage tank can be arranged on the machine body 90, and the sewage tank can be used to store sewage generated during cleaning process.

[0068] Optionally, a blower can be provided on the machine body 90, and an air outlet of the blower can be communicated with one end of a blowing tube, and the other end of the blowing tube can be arranged close to the surface to be cleaned. Through the blowing tube, the cleaned surface can be blown to facilitate drying of the cleaned surface. The machine body 90 can be provided with a temperature regulating device, the temperature regulating device can be arranged adjacent to the air outlet or an air inlet of the blower, the temperature regulating device can be arranged in the air outlet or the air inlet of the blower, and the temperature regulating device can also be arranged inside the blowing tube or on an outer wall of the blowing tube, temperature of gas flowing out of the air outlet of the blower or gas in the blowing tube can be adjusted by the temperature regulating device. The temperature regulating device can be a temperature heating device, through which temperature of gas flowing out of the air outlet of the blower or gas in the blowing tube can be increased, so as to quickly dry the cleaned surface.

[0069] Optionally, a vacuum device or a suction fan can be provided on the machine body 90, and a suction port of the vacuum device or an inlet of the suction fan can be connected with one end of a suction pipe, and the other end of the suction pipe can be arranged towards the surface to be cleaned, and sundries of the surface to be cleaned can be sucked by the suction pipe.

[0070] Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, rather than restrictive, and those of ordinary skilled in the art will under an enlightenment of the present invention, without departing from gist of the present invention and the protection scope of the claims, can also make many forms, all of which belong to the protection scope of the present invention.

Claims

1. A cleaning assembly, characterized in that, the cleaning assembly comprises: a mounting bracket (10); a first roller shaft (20) and a second roller shaft (30), wherein the first roller shaft (20) and the second roller shaft (30) are rotatably arranged on the mounting bracket (10); a cleaning element (40), wherein the cleaning element (40) is sleeved on the first roller shaft (20) and the second roller shaft (30), and the cleaning element (40) rotates in the same direction as the first roller shaft (20) and the second roller shaft (30) rotate; a pressurizing element (50), wherein the pressurizing element (50) is arranged between the first roller shaft (20) and the second roller shaft (30), and the pressurizing element (50) can abut against the cleaning element (40).

2. The cleaning assembly according to claim 1 , characterized in that, at least one of the first roller shaft (20) and the second roller shaft (30) is movable, and during movement of at least one of the first roller shaft (20) and the second roller shaft (30), the first roller shaft (20) is relatively close to or far away from the second roller shaft (30).

3. The cleaning assembly according to claim 1, characterized in that, the pressurizing element (50) is movable, so that the pressurizing element (50) abuts against or moves away from the cleaning element (40).

4. The cleaning assembly according to claim 3, characterized in that, the cleaning assembly further comprises: a fixing seat (11), wherein the pressurizing element (50) is arranged on the fixing seat (11), and the fixing seat (11) is rotatably arranged on the mounting bracket (10), the fixing seat (11) drives the pressurizing element (50) to abut against or move away from the cleaning element (40) during rotation of the fixing seat (11).

5. The cleaning assembly according to claim 3, characterized in that, the cleaning assembly further comprises: a first driving mechanism, wherein the first driving mechanism is used to drive the pressurizing element (50) to move, and the first driving mechanism can drive the pressurizing element (50) to move close to or away from the cleaning element (40).

6. The cleaning assembly according to claim 5, characterized in that, the first driving mechanism comprises: a fixing bracket (60) and an elastic element (61), wherein the elastic element (61) is arranged at the fixing bracket (60); a protruding part (62), wherein the protruding part (62) is arranged on the elastic element (61); a limiting part (63), wherein the limiting part (63) can abut against or disengage from the pressurizing element (50), and when the limiting part (63) abuts against the pressurizing element (50), the elastic element (61) is in a compressed state, and the pressurizing element (50) abuts against the cleaning element (40); when the limiting part (63) is disengaged from the pressurizing element (50), the elastic element (61) drives the protruding part (62) to move, and the protruding part (62) drives the pressurizing element (50) to move away from the cleaning element (40).

7. The cleaning assembly according to claim 6, characterized in that, a guide groove (64) is provided on the fixing bracket (60), and the elastic element (61) and the protruding part (62) are arranged in the guide groove (64); and/or the first driving mechanism further comprises: a limiting plate (65), wherein the limiting plate (65) is arranged on the fixing bracket (60), and the protruding part (62) is arranged between the limiting plate (65) and the fixing bracket (60); and/or the first driving mechanism further comprises: a limiting plate (65), wherein the limiting plate (65) is arranged on the fixing bracket (60), the protruding part (62) is arranged between the limiting plate (65) and the fixing bracket (60), and an avoidance groove (66) is provided at a position of the limiting plate (65) corresponding to the pressurizing element (50).

8. The cleaning assembly according to claim 1, characterized in that, the pressurizing element (50) comprises a first pressurizing roller shaft (51) that abuts against an outer periphery of the cleaning element (40).

9. The cleaning assembly according to claim 7, characterized in that, the pressurizing element (50) further comprises a second pressurizing roller shaft (52) that abuts against an inner periphery of the cleaning element (40) close to a surface to be cleaned.

10. The cleaning assembly according to claim 1, characterized in that, the pressurizing element (50) comprises a second pressurizing roller shaft (52) that abuts against an inner periphery of the cleaning element (40).

11. The cleaning assembly according to claim 9 or 10, characterized in that, the second pressurizing roller shaft (52) comprises a cylindrical body, an outer wall of the cylindrical body has at least one contact plane, and the contact plane abuts against an inner periphery of the cleaning element (40); or the second pressurizing roller shaft (52) comprises a connecting seat (53) and a plurality of roller shaft bodies (54) arranged at the connecting seat (53), the plurality of roller shaft bodies (54) are arranged in parallel at intervals, and the roller shaft bodies (54) abut against the inner periphery of the cleaning element (40).

12. The cleaning assembly according to claim 1, characterized in that, the pressurizing element (50) comprises a pressurizing roller shaft, and the pressurizing roller shaft is parallel to the first roller shaft (20) and the second roller shaft (30); and/or an outer surface of the pressurizing element (50) is provided with protruding structures; and/or the cleaning assembly also comprises: a cover plate (70), wherein the cover plate (70) is arranged adjacent to an outer surface of the cleaning element (40), and a side of the cover plate (70) facing the cleaning element (40) is provided with protruding structures (71) distributed at intervals.

13. The cleaning assembly according to claim 1, characterized in that, the cleaning assembly also comprises: a fixing bracket (60), wherein one end of the first roller shaft (20) is rotatably arranged on the mounting bracket (10), and the other end of the first roller shaft (20) is rotatably arranged on the fixing bracket (60); one end of the second roller shaft (30) is rotatably arranged on the mounting bracket (10), and the other end of the second roller shaft (30) is rotatably arranged on the fixing bracket (60).

14. A surface cleaning device, characterized in that, the surface cleaning device comprises a cleaning assembly according to any one of claims 1-13.

15. The surface cleaning device of claim 14, characterized in that, the surface cleaning device further comprises: a cleaning head, wherein the cleaning assembly is arranged on the cleaning head, and the cleaning head is movable, the cleaning head drives the cleaning assembly in a direction close to or away from the surface to be cleaned during movement of the cleaning head.