WO2021238204A1

WO2021238204A1 - Brush roller assembly and vacuum cleaner

Info

Publication number: WO2021238204A1
Application number: PCT/CN2020/141288
Authority: WO
Inventors: 陆苏忠; 杨曾峥; 杨强强; 马文彬; 刘明; 陈先鄂; 潘加文; 张静静
Original assignee: 苏州海歌电器科技有限公司
Priority date: 2020-05-29
Filing date: 2020-12-30
Publication date: 2021-12-02
Also published as: CN213097688U

Abstract

A brush roller assembly and a vacuum cleaner. The brush roller assembly comprises a housing, a driving assembly (1) and a water-resistant assembly (2). The driving assembly (1) and the water-resistant assembly (2) are provided inside the housing. The driving assembly (1) comprises a first driving member (11), a driving shaft (12) and a bearing (13). Both the first driving member (11) and the bearing (13) are sleeved onto the driving shaft (12). The water-resistant assembly (2) comprises a first sealing member (21) and a second sealing member (22). Both the first sealing member (21) and the second sealing member (22) are sleeved onto the driving shaft (12). The first sealing member (21) has a flared shape. One side of the second sealing member (22) abuts one side of the first sealing member (21). The other side of the second sealing member (22) abuts the bearing (13). The other side of the first sealing member (21) abuts the first driving member (11). The invention uses the flared first sealing member (21) to perform sealing, so that a liquid does not easily contact the second sealing member (22). The second sealing member (22) is used to reinforce sealing, such that the liquid will not enter a region behind the driving assembly (1) from the second sealing member (22) easily, thereby ensuring long service lives of components in the region behind the driving assembly (1).

Description

Rolling brush assembly and vacuum cleaner

Technical field

The utility model relates to the technical field of vacuum cleaners, in particular to a rolling brush assembly and a vacuum cleaner.

Background technique

Vacuum cleaners are commonly used household cleaning equipment, which can be divided into dry vacuum cleaners and wet vacuum cleaners according to the conditions of use. The wet vacuum cleaner is equipped with a clean water tank, a sewage tank, a water pump, etc. When in use, the water pump transfers the water in the clean water tank to the floor brush to wet the floor brush, and the motor drives the wet floor brush to rotate to scrub the floor. The scrubbing process The sewage generated on the ground is sucked into the sewage tank on the host through the suction port for storage. The wet vacuum cleaner has the functions of dust removal and mopping at the same time, which greatly facilitates the cleaning work.

However, the roller brush drive mechanism often encounters water ingress. Because the roller brush drive mechanism is normally in a rotating motion state, liquid often enters the roller brush drive assembly through the assembly gap during liquid cleaning, resulting in a reduction in the service life of the assembly and a certain degree The risk flows into the drive motor of the roller brush. At present, vacuum cleaners usually rely on a clearance fit or interference tight fit between the main shaft and the bearing or the shaft sleeve in the drive assembly to avoid the problem of water ingress, but the waterproof effect is not very obvious.

Based on the shortcomings of the prior art, there is an urgent need to develop a rolling brush assembly and a vacuum cleaner to solve the above problems.

Utility model content

In order to solve the above technical problems, the present invention provides a rolling brush assembly and a vacuum cleaner. The present invention is sealed by a trumpet-shaped first sealing element, so that the liquid is not easy to contact with the second sealing element, and then passes through the second sealing element. The two seals are sealed again. At this time, the liquid cannot easily enter the rear area of the drive assembly from the second seal, which fully ensures that the bearing and the parts in the rear area of the drive assembly do not come into contact with the liquid, thereby enhancing their service life.

The utility model discloses a rolling brush assembly, which includes a housing, a driving assembly and a waterproof assembly;

The driving component and the waterproof component are both arranged in the housing;

The driving assembly includes a first driving part, a driving shaft and a bearing, and both the first driving part and the bearing are sleeved on the driving shaft;

The waterproof assembly includes a first sealing element and a second sealing element, the first sealing element and the second sealing element are both sleeved on the drive shaft, and the first sealing element is trumpet-shaped;

One side of the second seal abuts against one side of the first seal, the other side of the second seal abuts against the bearing, and the other side of the first seal abuts against The first driving member abuts.

Further, the driving assembly further includes a second driving part, the second driving assembly is sleeved on the driving shaft, and the waterproof assembly is arranged between the first driving part and the second driving part between.

Further, the drive assembly further includes a connecting piece, the connecting piece is sleeved on the drive shaft, one side of the connecting piece abuts against the second sealing piece, and the other side of the connecting piece Abuts against the bearing.

Further, the first sealing element is a soft rubber waterproof gasket, and the second sealing element is a metal ring.

Further, the second sealing member is in interference fit with the drive shaft.

Further, the first sealing element includes a first sealing part and a second sealing part, one end of the first sealing part is connected to one end of the second sealing part, and the other end of the second sealing part is connected to the second sealing part. The second seal abuts.

Further, the first sealing part and the second sealing part are both sleeved on the drive shaft, and the diameter of the second sealing part is larger than the diameter of the first sealing part.

Further, the first sealing portion is in interference fit with the drive shaft, and the second sealing portion is in clearance fit with the drive shaft.

Further, a plurality of groups of bristles are arranged on the housing, and the plurality of groups of bristles are arranged along the axial direction of the housing.

Another aspect of the present invention protects a vacuum cleaner, which includes the rolling brush assembly as described above.

The implementation of the embodiments of the present utility model has the following beneficial effects:

1. The present utility model is sealed by a trumpet-shaped first sealing element, so that the liquid is not easy to contact with the second sealing element, and then the second sealing element is used for sealing again, at this time, the liquid is not easy to be sealed from the second sealing element. The parts enter the rear area of the drive assembly to fully ensure that the bearing and the parts in the rear area of the drive assembly do not come into contact with liquid, thereby enhancing their service life.

2. In the present utility model, since the drive shaft needs to continuously rotate during operation, the second sealing element is set as a metal ring, and the friction force of the first sealing element is small when it rubs against the surface of the second sealing element At the same time, it has a strong sealing effect to prevent liquid from entering, which solves the waterproof problem of the rolling brush assembly in the moving state.

Description of the drawings

In order to explain the technical solution of the present utility model more clearly, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a structural diagram of the rolling brush assembly of this embodiment;

2 is a structural diagram of the waterproof assembly and the driving assembly of this embodiment after being connected;

Fig. 3 is a structural diagram of the waterproof component of this embodiment after being stressed.

Among them, the reference signs in the figure correspond to:

1-drive assembly; 2-waterproof assembly; 11-first drive; 12-drive shaft; 13-bearing; 14-second drive; 15-connector; 21-first seal; 22-second seal Pieces; 211-the first sealing part; 212-the second sealing part.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present utility model.

It should be noted that the terms "first" and "second" in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. . It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those clearly listed. Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

The prior art has the following disadvantages: Since the roller brush drive mechanism is normally in a rotating motion state, liquid often enters the roller brush drive assembly through the assembly gap during liquid cleaning, resulting in a reduction in the service life of the assembly and a certain risk of flowing into the roller brush. The drive motor. At present, vacuum cleaners usually rely on a clearance fit or interference tight fit between the main shaft and the bearing or the shaft sleeve in the drive assembly to avoid the problem of water ingress, but the waterproof effect is not very obvious.

In view of the shortcomings of the prior art, the present utility model uses a horn-shaped first sealing element to seal, so that the liquid is not easily contacted with the second sealing element, and then the second sealing element is used to seal again. At this time, the liquid is not easy to escape from When the second sealing element enters the rear area of the drive assembly, it is fully ensured that the bearing and the parts in the rear area of the drive assembly do not come into contact with liquid, and its service life is enhanced.

Example 1

Referring to Figures 1 to 3, this embodiment provides a rolling brush assembly, which includes a housing, a drive assembly 1 and a waterproof assembly 2;

The drive assembly 1 and the waterproof assembly 2 are both arranged in the housing;

The driving assembly 1 includes a first driving part 11, a driving shaft 12 and a bearing 13, and the first driving part 11 and the bearing 13 are both sleeved on the driving shaft 12;

The waterproof assembly 2 includes a first sealing element 21 and a second sealing element 22, both of the first sealing element 21 and the second sealing element 22 are sleeved on the drive shaft 12, and the first sealing element 21 is horn-shaped;

One side of the second sealing member 22 abuts against one side of the first sealing member 21, the other side of the second sealing member 22 abuts against the bearing 13, and the first sealing member 21 The other side abuts against the first driving member 11.

It should be noted that: in this embodiment, it can be seen that the front area of the drive assembly 1 is in contact with the liquid, and the rear area of the drive assembly 1 is not in contact with the liquid, so as to ensure the life of the parts in the rear area of the drive assembly 1. The waterproof assembly 2 is arranged on the drive assembly 1 to ensure that the parts in the rear area of the drive assembly 1 are not in contact with liquid, and the life of the parts in the rear area of the drive assembly 1 is guaranteed.

Preferably, the driving assembly 1 further includes a second driving part 14, the second driving assembly 1 is sleeved on the driving shaft 12, and the waterproof assembly 2 is arranged on the first driving part 11 and the Between the second drive member 14.

Preferably, the drive assembly 1 further includes a connecting piece 15 which is sleeved on the drive shaft 12, one side of the connecting piece 15 abuts the second sealing piece 22, and the The other side of the connecting piece 15 abuts against the bearing 13.

Specifically, since the drive shaft 12 needs to continuously rotate during operation, the second sealing member 22 is arranged as a metal ring, and the first sealing member 21 has a small friction force when rubbing against the surface of the metal ring. At the same time, it has a strong sealing effect to prevent liquid from entering, which solves the waterproof problem of the rolling brush assembly in the moving state.

Preferably, the first sealing member 21 is a soft rubber waterproof gasket, and the second sealing member 22 is a metal ring.

Specifically, the maximum diameter of the second sealing element 22 is greater than the maximum diameter of the first sealing element 21; the first sealing element 21 is trumpet-shaped, and the second sealing element 22 can be regarded as a circular ring foil.

Specifically, a wear-resistant and rust-proof coating is provided on the metal ring.

Preferably, the second sealing member 22 is interference fit with the drive shaft 12.

Preferably, the first sealing member 21 includes a first sealing part 211 and a second sealing part 212, one end of the first sealing part 211 is connected to one end of the second sealing part 212, and the second sealing part The other end of 212 abuts against the second sealing member 22.

Preferably, the first sealing part 211 and the second sealing part 212 are both sleeved on the driving shaft 12, and the diameter of the second sealing part 212 is larger than the diameter of the first sealing part 211.

Specifically, the second sealing portion 212 can be regarded as a round of flanging provided on the first sealing portion 211.

Preferably, the first sealing portion 211 is in interference fit with the drive shaft 12, and the second sealing portion 212 is in clearance fit with the drive shaft 12.

Specifically, the first sealing member 21 can be deformed when subjected to a force, and the second sealing portion 212 is in close contact with the surface of the second sealing member 22.

Furthermore, when the first sealing member 21 is not stressed, the first sealing member 21 is not deformed, and the second sealing portion 212 abuts against the surface of the second sealing member 22; When the first sealing element 21 is pressed down under a force, the first sealing element 21 is deformed, the second sealing part 212 is in close contact with the second sealing element 22, and the second sealing part 212 is in contact with the The contact area of the surface of the second sealing member 22 is significantly increased. At this time, the front end of the drive shaft 12 is in contact with liquid, but it is difficult for the liquid to break through the pressing force between the second sealing portion 212 and the second sealing member 22 and enter the inside of the drive assembly, so the first A seal 21 and the second seal 22 play a waterproof role when the drive shaft 13 is running.

Preferably, a plurality of groups of bristles are provided on the housing, and the plurality of groups of bristles are arranged along the axial direction of the housing.

Another aspect of the present invention protects a vacuum cleaner, which includes the rolling brush assembly as described above. Because the vacuum cleaner is provided with the roller brush assembly, the friction force of the drive shaft 12 is small when the drive shaft 12 is working, and at the same time, it has a strong sealing effect, thereby preventing liquid from entering; this solves the problem of Waterproof problem of roller brush assembly.

Although the present utility model has been described through preferred embodiments, the present utility model is not limited to the embodiments described here, and includes various changes and changes made without departing from the scope of the present utility model.

In this article, the terminology of front, back, upper, lower, etc. involved is defined in terms of the position of the parts in the drawings and the positions between the parts in the drawings, just for the clarity and convenience of expressing the technical solution. It should be understood that the use of the location words should not limit the scope of protection claimed in this application.

In the case of no conflict, the above-mentioned embodiments and the features in the embodiments in this specification can be combined with each other.

The above-disclosed is only a preferred embodiment of the utility model. Of course, it cannot be used to limit the scope of rights of the utility model. Therefore, equivalent changes made according to the claims of the utility model are still covered by the utility model. Scope.

Claims

A rolling brush assembly, which is characterized by comprising a housing, a driving assembly (1) and a waterproof assembly (2);

The driving component (1) and the waterproof component (2) are both arranged in the housing;

The driving assembly (1) includes a first driving part (11), a driving shaft (12) and a bearing (13), and the first driving part (11) and the bearing (13) are all sleeved on the driving On the shaft (12);

The waterproof component (2) includes a first seal (21) and a second seal (22), and the first seal (21) and the second seal (22) are both sleeved on the drive On the shaft (12), the first seal (21) is trumpet-shaped;

One side of the second seal (22) abuts on one side of the first seal (21), and the other side of the second seal (22) abuts on the bearing (13) , The other side of the first sealing member (21) abuts against the first driving member (11).
The roller brush assembly according to claim 1, wherein the drive assembly (1) further comprises a second drive part (14), and the second drive assembly (1) is sleeved on the drive shaft (12) above, and the waterproof component (2) is arranged between the first driving member (11) and the second driving member (14).
The roller brush assembly according to claim 2, characterized in that the drive assembly (1) further comprises a connecting piece (15), and the connecting piece (15) is sleeved on the drive shaft (12) One side of the connecting piece (15) abuts against the second sealing piece (22), and the other side of the connecting piece (15) abuts against the bearing (13).
The roller brush assembly according to claim 3, wherein the first sealing member (21) is a soft rubber waterproof gasket, and the second sealing member (22) is a metal ring.
The roller brush assembly according to claim 4, wherein the second sealing member (22) and the drive shaft (12) are in interference fit.
The rolling brush assembly according to claim 5, wherein the first sealing member (21) comprises a first sealing part (211) and a second sealing part (212), and the first sealing part (21) One end of 211) is connected to one end of the second sealing portion (212), and the other end of the second sealing portion (212) abuts against the second sealing member (22).
The roller brush assembly according to claim 6, wherein the first sealing portion (211) and the second sealing portion (212) are both sleeved on the drive shaft (12), so The diameter of the second sealing portion (212) is greater than the diameter of the first sealing portion (211).
The roller brush assembly according to claim 7, characterized in that the first sealing portion (211) and the drive shaft (12) are in interference fit, and the second sealing portion (212) is in interference fit with the drive shaft (12). The drive shaft (12) has a clearance fit.
The rolling brush assembly according to claim 8, wherein a plurality of groups of bristles are provided on the housing, and the plurality of groups of bristles are arranged along the axial direction of the housing.
A vacuum cleaner, characterized by comprising the rolling brush assembly according to any one of claims 1-9.