CN212037376U

CN212037376U - Brush head of dust collector and dust collector

Info

Publication number: CN212037376U
Application number: CN202020055151.8U
Authority: CN
Inventors: 陆鹏; 郭耀; 熊英杰
Original assignee: Bo Xihua Electric Jiangsu Co Ltd
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; Bo Xihua Electric Jiangsu Co Ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-12-01
Anticipated expiration: 2030-01-10

Abstract

The application relates to a brush head and dust catcher of dust catcher, the brush head of dust catcher includes the casing, rotatable part and drive assembly, the casing has the cavity, the cavity is used for holding damping oil, the rotatable part is located the cavity at least, and with the contact of damping oil, drive assembly can directly or indirectly drive the rotatable part and rotate, the cushioning effect that utilizes damping oil exerts the resistance to the rotation of rotatable part, and then restrict the rotational speed of the brush head of dust catcher, reduce the brush head of dust catcher because of the rotational speed too fast and produce the possibility of noise.

Description

Brush head of dust collector and dust collector

Technical Field

The application relates to the technical field of household appliances, in particular to a brush head of a dust collector and the dust collector.

Background

Along with the improvement of standard of living, the dust catcher has become common domestic appliance in people's family gradually, the brush head of dust catcher is through rotatory and produce the air current and absorb the dust, reach clean ground or other local purpose, can produce the noise when the rotational speed of brush head is too fast, destroy user's use experience, consequently, need restrict the rotational speed of drive shaft, under the normal condition, the brush head of dust catcher is provided with two friction discs, the frictional force that produces when taking place relative motion through two friction discs hinders brush head rotation, reach the purpose of controlling brush head rotational speed, such setting can restrict brush head's rotational speed, but take place relative motion between the friction disc and still can produce the noise, the friction disc needs often to be changed simultaneously, bring inconvenience for the user.

SUMMERY OF THE UTILITY MODEL

The application provides a brush head of a dust collector and the dust collector, which are used for solving the problem that the brush head generates noise when rotating at an over-high speed.

The embodiment of the application provides a brush head of a dust collector, which comprises a shell, a rotating part and a driving assembly, wherein the shell is provided with a cavity, the cavity is used for containing damping oil, at least part of the rotating part is positioned in the cavity, and the part positioned in the cavity is contacted with the damping oil;

the drive assembly comprises a connecting piece, the connecting piece can be connected with the rotating part or disconnected, and when the connecting piece is connected with the rotating part, the drive assembly can drive the rotating part to rotate relative to the shell.

The brush head of dust catcher that this application embodiment provided, including the rotating part that the part is located damping oil to and can be connected or remove the connecting piece of being connected with rotating part, when the connecting piece is connected with rotating part, under drive assembly's drive, the connecting piece drives rotating part and rotates, receives damping oil's cushioning effect's influence, and rotating part can receive and hinder it to carry out pivoted resistance, and then restricts the rotational speed of the brush head of dust catcher.

In one possible implementation, the connecting member includes a fixed portion and a free portion, the free portion being movable in a direction toward or away from the fixed portion;

the fixed part is connected with the driving assembly, the driving assembly is used for driving the connecting piece to rotate relative to the shell, and the rotating part is positioned on the periphery of the free part;

when the connecting piece rotates relative to the shell, the free part can be far away from the fixed part under the action of centrifugal force and is connected with the rotating part so as to drive the rotating part to rotate relative to the shell.

Through setting up the free portion, when the rotational speed of the brush head of dust catcher reachd preset rotational speed, the connecting piece can be connected with the rotating part through the free portion is automatic under the effect of centrifugal force to realize driving the purpose that the rotating part is located the part pivoted of damping oil through the connecting piece

In a possible implementation manner, the connecting member includes a connecting portion, the connecting portion is used for connecting the fixing portion and the free portion, and the connecting portion can generate elastic deformation.

Through setting up the connecting portion that can produce elastic deformation to make when the rotational speed of the brush head of dust catcher slows down, when being less than predetermined rotational speed, the direction motion of rotating member can be kept away from to the free portion, and automatic and rotating member remove to be connected, reduce the resistance that the brush head of dust catcher received at the rotation in-process.

In a possible implementation, the connection is provided with a reinforcement structure.

Because connecting portion need produce elastic deformation, consequently, through setting up the reinforcement to promote the intensity and the toughness of connecting portion, the life of extension connecting piece.

In one possible implementation, the rotating part includes a through hole, and the connecting member is located in the through hole;

the free portion can abut against the side wall of the through hole under the action of centrifugal force.

Through setting up the connecting piece at the through-hole, when the connecting piece needs to be connected with rotatable parts, the lateral wall butt of connecting piece and through-hole to promote the stability that the two is connected.

In a possible realization, the part of the free portion connected to the rotating part is provided with a damping.

Through setting up the frictional force that can promote between free portion and the rotating member of damping, and then promote the connecting piece and drive rotating member pivoted stability.

In a possible implementation manner, the connecting member includes a plurality of free portions, and each of the free portions is connected to the fixing portion.

Through setting up a plurality of free portions to promote the stability of being connected between connecting piece and the rotating member.

The embodiment of the application also provides a brush head of the dust collector, the brush head comprises a shell, a rotating part and a driving assembly, the shell is provided with a cavity, the cavity is used for containing damping oil, at least part of the rotating part is positioned in the cavity, and the part positioned in the cavity is contacted with the damping oil;

the driving assembly is fixedly connected with the rotating part and used for driving the rotating part to rotate relative to the shell.

The utility model provides a brush head of dust catcher, through with drive assembly and rotating member fixed connection, rotate for the casing with the drive rotating member, its part that is located damping oil rotates in damping oil, when the rotational speed of the brush head of dust catcher is lower, the resistance that rotating member received is less, can not influence the normal rotation of the brush head of dust catcher, when the rotational speed of the brush head of dust catcher accelerates, the rotational speed of the part of rotating member and damping oil contact accelerates in damping oil, because damping oil has the cushioning effect, when rotating member's rotational speed accelerates, its resistance that receives also can increase, and then the rotational speed of the brush head of restriction dust catcher limits, reduce the brush head of dust catcher because of the rotational speed too fast possibility that produces the noise.

The embodiment of the application also discloses a dust collector which comprises the brush head of the dust collector in any embodiment.

The dust catcher can adopt the brush head of the dust catcher of above-mentioned embodiment can effectively reduce the noise of the brush head of dust catcher, promotes user's use experience.

In a possible implementation manner, the part of the rotating component, which is located in the cavity, is provided with gear tooth structures, an accommodating space is formed between adjacent gear tooth structures, and damping oil can be located in the accommodating space and is in contact with the rotating component.

Through set up the area of contact in order to increase damping oil and rotating member at rotating member, and then promote the cushioning effect of damping oil to rotating member.

The brush head of the dust collector provided by the embodiment of the application can be contacted with the damping oil and can rotate the rotating part, and the purpose of limiting the rotating speed of the brush head of the dust collector is realized by utilizing the buffering effect of the damping oil.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is a schematic view of a brush head of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural diagram of a connecting member according to an embodiment of the present disclosure when the connecting member is not connected to a rotating member;

FIG. 4 is a schematic structural diagram of a connection member connected to a rotating member according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of another embodiment of a brush head of a vacuum cleaner according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a connector provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a rotating component provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a housing provided in an embodiment of the present application;

FIG. 9 is a side view of FIG. 8;

fig. 10 is a sectional view taken along a-a of fig. 9.

Reference numerals:

1-a shell;

11-a cavity;

2-a rotating member;

21-a through hole;

22-gear tooth structure;

23-an accommodation space;

24-gap;

3-a drive assembly;

31-a connector;

311-a fixed part;

312-free portion;

313-a connecting portion;

314-a reinforcing structure;

32-a drive rod;

33-a drive section.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Along with the development of technique, the dust catcher becomes the domestic appliance who commonly uses in people's family gradually, compares in artifical cleaning device such as traditional broom, and the dust catcher has higher cleaning efficiency, and the dust catcher has the brush head, through the rotation of brush head, can improve the brush head of dust catcher and treat the relative friction between the clean surface to make the dust catcher have higher cleaning efficiency, simultaneously, brush head rotation production air current can be with inside the dust suction dust catcher, thereby reach clear purpose. However, when the rotating speed of the brush head of the vacuum cleaner is too high, noise is generated, and the use experience of a user is damaged, so that the rotating speed of the brush head needs to be limited, and the purpose of reducing the noise is achieved by limiting the rotating speed of the brush head.

Under the normal condition, in order to limit the rotating speed of the brush head, two friction plates are arranged in the brush head and are in contact with each other, relative motion can be generated between the two friction plates, and the rotation of the brush head is blocked by the friction generated when the two friction plates move relatively, so that the purpose of limiting the rotating speed of the brush head is achieved. Although the method can limit the rotating speed of the brush head and reduce the noise generated by the brush head of the dust collector to a certain extent, the noise is still generated when the two friction plates move relatively, meanwhile, the friction plates are abraded due to the relative movement between the two friction plates, and the effect of limiting the rotating speed of the brush head is influenced when the friction plates are abraded, so that the rotating speed of the brush head can be limited by the friction plates, the friction plates are required to be frequently replaced, inconvenience is brought to a user, and the cost is increased.

In view of this, the present application provides a brush head of a vacuum cleaner and a vacuum cleaner for limiting a rotation speed of the brush head of the vacuum cleaner, thereby reducing noise of the vacuum cleaner.

As shown in fig. 1 to 4 and 8 to 10, the embodiment of the present application provides a brush head of a vacuum cleaner, wherein the brush head includes a housing 1, a rotating member 2 and a driving assembly 3, the housing 1 has a cavity 11, damping oil is contained in the cavity 11, the rotating member 2 is at least partially located in the cavity 11 and is in contact with the damping oil, and the rotating member 2 and the housing 1 can be connected by an oil seal, so that the possibility of leakage of the damping oil can be reduced, and the rotating member 2 can move relative to the housing 1. Drive assembly 3 includes connecting piece 31, actuating lever 32 and drive division 33, connecting piece 31 sets up at actuating lever 32, and can rotate along with actuating lever 32, drive division 33 is connected with actuating lever 32, be used for driving actuating lever 32 and rotate, the brush head of this dust catcher still includes a round brush section of thick bamboo (not shown in the figure), a round brush section of thick bamboo is connected with actuating lever 32, and can rotate along with actuating lever 32, be used for with treat the clean surface contact, treat the clean surface and clean, drive division 33 can be the wind wheel, also can be other brush heads that can be applied to the dust catcher, and can drive actuating lever 32 pivoted part.

The link 31 is movably connected to the rotary member 2, that is, the link 31 can be connected to the rotary member 2 or disconnected from the rotary member 2. When the connecting piece 31 is connected with the rotating part 2, the driving assembly 3 drives the rotating part 2 to rotate relative to the shell 1, so that the part of the rotating part 2 located in the damping oil can rotate in the damping oil. Because the effect that damping oil has the buffering, when the rotating member 2 is located the part rotation of damping oil, can produce frictional force between damping oil and the rotating member 2, frictional force can hinder the motion of rotating member 2, motion through restriction rotating member 2 is with the rotation of restriction connecting piece 31, and then restrict the rotational speed of actuating lever 32, carry out the purpose of restriction with the rotational speed that reaches the brush head of dust catcher, reduce the possibility that leads to the appearance great noise because of the brush head rotational speed of dust catcher is too fast, promote user's use and experience.

The mode of relative motion between rotating part 2 and the fluid that this application embodiment provided, and compare in the mode that sets up two relative motion's friction disc, the wearing and tearing of rotating part 2 can be reduced to the mode that this application embodiment provided, and extension rotating part 2's life need not frequently to change rotating part 2, and the noise that produces when can further reducing rotating part 2 simultaneously moves, and then promotion user's use is experienced.

As shown in fig. 6, the present embodiment provides a brush head of a vacuum cleaner, wherein the connecting member 31 comprises a fixed portion 311 and a free portion 312, and the free portion 312 can move relative to the fixed portion 311, i.e. the free portion 312 can move closer to or away from the fixed portion 311. The fixed portion 311 is used for connecting with the driving component 3, so that the driving component 3 can drive the connecting piece 31 to rotate relative to the shell 1, the rotating component 2 is arranged on the periphery of the free portion 312, and when the free portion 312 moves towards a direction far away from the fixed portion 311, the free portion 312 can be abutted with the rotating component 2.

When the driving assembly 3 drives the connecting member 31 to rotate relative to the housing 1, the free portion 312 is acted by centrifugal force and moves in a direction away from the fixing portion 311, so that the free portion 312 abuts against the rotating member 2, and the rotating member 2 is driven to move, so that the rotating member 2 moves in contact with the damping oil.

Through such a mode, can make connecting piece 31 be connected with rotatable parts 2 automatically under the effect of centrifugal force when the brush head of dust catcher reaches predetermined rotational speed to drive rotatable parts 2 and rotate, need not to carry out manually operation, the scheme that this application embodiment provided still has simple structure simultaneously, the advantage of easily realizing.

As shown in fig. 6, the present embodiment provides a brush head of a vacuum cleaner, wherein the connecting member 31 includes a connecting portion 313, the fixed portion 311 and the free portion 312 are connected by the connecting portion 313, the connecting portion 313 can be elastically deformed, when the driving member 3 drives the connecting member 31 to reach a predetermined rotation speed, the centrifugal force received by the free portion 312 is greater than the elastic force of the connecting portion 313, the free portion 312 moves in a direction away from the fixed portion 311, when the rotation speed of the brush head decreases, the rotation speed of the driving member 3 driving the connecting member 31 decreases, and when the centrifugal force received by the free portion 312 is less than the elastic force of the connecting portion 313, the free portion 312 moves in a direction close to the fixed portion 311, so that the connecting member 31 is disconnected from the rotating member 2.

The design can lead the connecting piece 31 to realize automatic connection or disconnection with the rotating part 2 according to different rotating speeds of the brush head of the dust collector, when the rotating speed of the brush head of the dust collector reaches a preset rotating speed, the connecting part 313 generates elastic deformation, the connecting piece 31 is connected with the rotating part 2 through the free part 312, the rotating part 2 is driven to rotate, the rotating speed of the brush head of the dust collector is limited through resistance generated between the rotating part 2 and damping oil to the movement, when the rotating speed of the brush head of the dust collector is reduced to be lower than the preset rotating speed, namely, when the centrifugal force received by the free part 312 is smaller than the elastic force received by the free part 313, the free part 312 can automatically remove the connection with the rotating part 2, and the brush head of the dust collector does not receive the resistance from the connecting piece 31 and the damping oil any more, and works normally.

As shown in fig. 3, a gap 24 exists between the free portion 312 of the connecting member 31 and the rotating member 2, that is, the connecting member 31 is not connected to the rotating member 2, at this time, the rotating speed of the brush head of the vacuum cleaner is not affected by the rotating member 2, when the rotating speed of the brush head in the western city reaches a preset rotating speed, as shown in fig. 4, the free portion 312 moves in a direction away from the fixing portion 311 under the action of centrifugal force and abuts against the rotating member 2 to drive the rotating member 2 to rotate relative to the housing 1, and a portion of the rotating member 2 located in the damping oil is subjected to resistance when rotating in the damping oil, so as to limit the rotating speed of the driving rod 32 and further limit the rotating speed of the brush head of the vacuum cleaner, thereby reducing the possibility that the brush head of the vacuum cleaner generates noise due to an excessively.

As shown in fig. 6, the embodiment of the present application provides a brush head of a vacuum cleaner, wherein the connection portion 313 of the connection member 31 has a reinforcing structure 314, the reinforcing structure 314 may be a reinforcing rib, because the connection portion 313 needs to be elastically deformed and recover from deformation, there is a risk that the connection portion 313 cracks due to frequent use, and the connection member 31 may not be normally used when the connection portion 313 cracks or breaks, and cannot be automatically connected to or disconnected from the rotating member 2, and further cannot limit the rotation speed of the brush head of the vacuum cleaner, and cannot achieve the purpose of reducing noise generated by the brush head by limiting the rotation speed of the brush head of the vacuum cleaner, and therefore in the embodiment of the present application, the connection portion 313 is provided with the reinforcing structure 314, so as to achieve the purpose of prolonging the service life of the connection member 31.

As shown in fig. 7, the embodiment of the present application provides a brush head of a vacuum cleaner, wherein the rotating part 2 includes a through hole 21, the connecting part 31 is located in the through hole 21, that is, the rotating part 2 is sleeved on the outer side of the connecting part 31, when the rotating speed of the brush head of the vacuum cleaner reaches a predetermined value, the free part 312 of the connecting part 31 moves away from the fixing part 311 under the action of centrifugal force, and abuts against the hole wall of the through hole 21 to connect the connecting part 31 and the rotating part 2.

By such a design, the connection between the connecting piece 31 and the rotating component 2 can be facilitated, the free part 312 moves towards the direction far away from the fixed part 311 under the action of centrifugal force, namely towards the direction close to the rotating component 2, and the possibility that the free part 312 cannot be connected with the rotating component 2 due to deviation of the movement direction can be reduced by arranging the connecting piece 31 in the through hole 21.

The embodiment of the application provides a brush head of a dust collector, wherein a part of the free part 312 connected with the rotating part 2 is provided with a damping, and the damping is arranged at the connecting position of the free part 312 and the rotating part 2, so that the friction force between the free part 312 and the rotating part 2 is improved, the possibility of relative movement between the free part 312 and the rotating part 2 when the free part and the rotating part are connected is reduced, and the stability of connection between the connecting piece 31 and the rotating part 2 is further improved.

As shown in fig. 6, the embodiment of the present application provides a brush head of a vacuum cleaner, wherein the connecting member 31 includes a plurality of free portions 312, each of the free portions 312 is connected to the fixed portion 311, when a rotation speed of the brush head of the vacuum cleaner reaches a predetermined speed, each of the free portions 312 moves away from the fixed portion 311 under a centrifugal force, and is connected to the rotating member 2, and the plurality of free portions 312 are provided to improve a stability of connection between the connecting member 31 and the rotating member 2.

As shown in fig. 5 and fig. 8 to 10, the present application further provides a brush head of a vacuum cleaner, wherein the brush head includes a housing 1, a rotating member 2, and a driving assembly 3, the housing 1 has a cavity 11, the cavity 11 is used for containing damping oil, the rotating member 2 is at least partially located in the cavity 11 and is in contact with the damping oil, and the driving assembly 3 is fixedly connected to the rotating member 2 and is used for driving the rotating member 2 to rotate relative to the housing 1.

When the rotating speed of the brush head of the dust collector is low, the rotating speed of the rotating part 2 is also low, at the moment, the rotating part 2 is positioned in the cavity 11 and is in contact with the damping oil, the friction force generated between the rotating part 2 and the damping oil is small, the normal motion of the brush head of the dust collector cannot be influenced, when the rotating speed of the brush head of the dust collector is accelerated, the rotating speed of the rotating part 2 in contact with the damping oil is accelerated, and because the damping oil has a buffering effect, the friction force between the rotating part 2 and the damping oil is increased, the resistance received by the brush head of the dust collector is also increased, and the purpose of limiting the rotating speed of the brush head of the dust collector is achieved.

Through the mode that drive assembly 3 is direct to be connected with rotatable part 2, make drive assembly 3 and rotatable part 2 can carry out stable connection, reduce because of drive assembly 3 is connected unstably with rotatable part 2 and leads to the unable pivoted possibility of drive rotatable part 2, and then can realize carrying out the purpose of restriction to the rotational speed of the brush head of dust catcher.

Based on the brush head of the vacuum cleaner in the above embodiments, the present application further provides a vacuum cleaner, which includes the brush head of the vacuum cleaner in any one of the above embodiments, and since each embodiment has the above technical effects, the vacuum cleaner including the brush head of the vacuum cleaner also has the above technical effects, and details are not described here.

As shown in fig. 7, the present application provides a vacuum cleaner, wherein a portion of the rotating component 2 located in the cavity 11 is provided with a gear tooth structure 22, the gear tooth structure 22 is located in damping oil, an accommodating space 23 is formed between adjacent gear tooth structures 22, the damping oil can enter the accommodating space 23 and contact with the gear tooth structure 22, by providing the gear tooth structure 22, a contact area between the rotating component 2 and the damping oil is increased, and then a buffering effect of the damping oil on the rotating component 2 is improved, so that an effect of displaying a rotating speed of the vacuum cleaner brush head is achieved by limiting the rotating speed of the rotating component 2.

The embodiment of the application provides brush head and dust catcher of dust catcher, the brush head of dust catcher includes casing 1, rotatable part 2 and drive assembly 3, casing 1 has cavity 11, damping oil has been held in the cavity 11, rotatable part 2 at least part is located cavity 11, and with the contact of damping oil, drive assembly 3 can drive rotatable part 2 and rotate for casing 1, rotatable part 2 and the contact of damping oil, and the part that is located damping oil is at the rotation of damping oil, the cushioning effect through damping oil hinders the rotation of rotatable part 2, the rotational speed of rotatable part 2 is restricted, and then the whole rotational speed of the brush head of restriction dust catcher. The mode can effectively limit the rotating speed of the brush head of the dust collector, so that the noise generated by the brush head of the dust collector in the rotating process is reduced, the brush head of the dust collector is limited in speed by the mode, no large noise is generated additionally, and the use experience of a user can be effectively improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A brush head of a dust collector is characterized in that the brush head comprises a shell (1), a rotating part (2) and a driving assembly (3), the shell (1) is provided with a cavity (11), the cavity (11) is used for containing damping oil, the rotating part (2) is at least partially positioned in the cavity (11), and the part positioned in the cavity (11) is contacted with the damping oil;

the driving assembly (3) comprises a connecting piece (31), the connecting piece (31) can be connected with the rotating component (2) or disconnected, and when the connecting piece (31) is connected with the rotating component (2), the driving assembly (3) can drive the rotating component (2) to rotate relative to the shell (1).

2. The brush head of a vacuum cleaner according to claim 1, characterized in that the connecting element (31) comprises a fixed part (311) and a free part (312), the free part (312) being movable in a direction towards or away from the fixed part (311);

the fixed part (311) is connected with the driving component (3), the driving component (3) is used for driving the connecting piece (31) to rotate relative to the shell (1), and the rotating part (2) is positioned on the periphery of the free part (312);

when the connecting piece (31) rotates relative to the shell (1), the free part (312) can be far away from the fixed part (311) under the action of centrifugal force and is connected with the rotating component (2) so as to drive the rotating component (2) to rotate relative to the shell (1).

3. The brush head of a vacuum cleaner according to claim 2, characterized in that the connecting element (31) comprises a connecting portion (313), the connecting portion (313) being adapted to connect the fixed portion (311) and the free portion (312), and the connecting portion (313) being elastically deformable.

4. A brush head according to claim 3, characterized in that the connecting portion (313) is provided with a reinforcing structure (314).

5. A brush head for a vacuum cleaner according to claim 2, characterized in that the rotating part (2) comprises a through hole (21), the connecting piece (31) being located in the through hole (21);

the free portion (312) can abut against the side wall of the through hole (21) by the centrifugal force.

6. A brush head according to claim 2, characterized in that the part of the free portion (312) that is connected to the rotating part (2) is provided with a damping.

7. The brush head of a vacuum cleaner according to claim 2, characterized in that the connecting member (31) comprises a plurality of said free portions (312), each of said free portions (312) being connected to the fixed portion (311), respectively.

8. A brush head of a dust collector is characterized in that the brush head comprises a shell (1), a rotating part (2) and a driving assembly (3), the shell (1) is provided with a cavity (11), the cavity (11) is used for containing damping oil, the rotating part (2) is at least partially positioned in the cavity (11), and the part positioned in the cavity (11) is contacted with the damping oil;

the driving assembly (3) is fixedly connected with the rotating part (2) and is used for driving the rotating part (2) to rotate relative to the shell (1).

9. A vacuum cleaner comprising a brush head for a vacuum cleaner according to any one of claims 1 to 8.

10. A vacuum cleaner according to claim 9, characterized in that the part of the rotating part (2) in the cavity (11) is provided with gear tooth structures (22), an accommodating space (23) is formed between adjacent gear tooth structures (22), and damping oil can be located in the accommodating space (23) and is in contact with the rotating part (2).