WO2021189765A1

WO2021189765A1 - Floor brush of vacuum cleaner and vacuum cleaner

Info

Publication number: WO2021189765A1
Application number: PCT/CN2020/111086
Authority: WO
Inventors: 魏娟; 聂恒安; 王聪
Original assignee: 天佑电器（苏州）有限公司
Priority date: 2020-03-26
Filing date: 2020-08-25
Publication date: 2021-09-30
Also published as: CN212186363U

Abstract

A floor brush (1) of a vacuum cleaner and a vacuum cleaner (100), the floor brush (1) of the vacuum cleaner comprising a housing (10) and an air guide piece (20), wherein the housing (10) limits an airflow inlet (11), an airflow outlet (12) and an airflow channel which fluidly communicates the airflow inlet (11) and the airflow outlet (12). The airflow channel is formed by two oppositely arranged side airflow channels and a middle airflow channel located between the two side airflow channels, and the airflow outlet (12) is located in the middle airflow channel and fluidly communicated with the middle airflow channel. The air guide piece (20) is arranged in the middle airflow channel so as to divide the middle airflow channel into at least two branches, wherein the branches are converged at the position close to the airflow outlet (12). By disposing the air guide piece (20) in the middle airflow channel, the suction force of the two ends of the housing (10) can be increased.

Description

Floor brush and vacuum cleaner of vacuum cleaner

Technical field

The utility model relates to a floor brush and a vacuum cleaner of a vacuum cleaner, in particular to a floor brush and a vacuum cleaner of a vacuum cleaner which can increase the suction power at both ends of a housing.

Background technique

The floor brush of the existing vacuum cleaner is provided with double air ducts to make the suction force of the entire suction opening uniform. For example, Chinese patent application CN201410268097.4 discloses a dual-air duct vacuum cleaner floor brush, which includes a housing and a pipe joint arranged at the rear end of the housing. The housing includes an upper cover and a lower cover with an air inlet duct. The upper cover and the lower cover are fixedly connected, the lower cover is provided with a dust suction port, the pipe joint has a lumen, and the dust suction port communicates with the lumen through the air inlet duct, The air intake duct has two air ducts, which are a first air duct and a second air duct formed side by side on both sides of the lower cover, and a three-way connection is connected between the pipe joint and the housing. Tube.

For another example, Chinese patent application 201710190921.2 discloses a floor brush, including a floor brush body formed by buckling a floor brush base and a surface cover, the floor brush body is provided with a rolling brush, and an air flow is provided on the floor brush base. The inlet, the floor brush body is provided with an air duct, the beginning of the air duct faces the air inlet, and the end is connected with the air outlet. The air flow inlet, the air duct is correspondingly arranged as a front air duct and a rear air duct, and the front air duct and the rear air duct are connected to the air flow outlet after they meet at the rear of the roller brush.

However, the brush of the existing dual-air duct vacuum cleaner is not conducive to improving the suction force at both ends of the housing.

Utility model content

The utility model provides a floor brush and a vacuum cleaner of a vacuum cleaner to solve the technical problem of poor suction effect at both ends of a housing.

The utility model provides a floor brush of a vacuum cleaner, which includes:

A housing that defines an airflow inlet, an airflow outlet, and an airflow channel that fluidly communicates the airflow inlet and the airflow outlet;

The air flow channel is formed by two oppositely arranged side air flow channels and a middle air flow channel located in the middle of the two side air flow channels, and the air flow outlet is located in the middle air flow channel and is in fluid communication with the middle air flow channel;

The floor brush also includes an air guide, the air guide is disposed in the middle air flow channel to divide the middle air flow channel into at least two branches, wherein each of the branches is close to the air outlet The locations converge.

Optionally, the air guiding element includes a first air guiding surface close to the airflow inlet and a second air guiding surface close to the airflow outlet, and a smooth transition between the first air guiding surface and the second air guiding surface .

Optionally, the second air guide surface and the inner wall of the housing form the branch, and the distance between the second air guide surface and the inner wall of the housing limits the cross-sectional area of the airflow of the branch.

Optionally, the air guide can be movably arranged in the intermediate air flow channel, so that the distance between the second air guide surface and the inner wall of the housing can be changed by changing the position of the air guide.

Optionally, the air guide is movably disposed in the intermediate air flow channel, by moving the air guide in a direction close to or away from the air flow outlet on an axis determined by the air flow outlet, so as to The distance between the second air guide surface and the inner wall of the housing is changed.

Optionally, the air guide is rotatably disposed in the intermediate air flow channel, and the first air guide surface and the second air guide surface are interchanged by rotating the air guide The distance between the first air guide surface and the inner wall of the housing when it is located close to the airflow inlet is not equal to the distance between the second air guide surface and the inner wall of the housing when it is located close to the airflow inlet The distance of the inner wall of the housing.

Optionally, the air guide has a hollow cylindrical structure.

Optionally, the air guide is a three-dimensional structure with a wide middle and a narrow end.

Optionally, the air guide has a rhombus columnar structure or an O-shaped columnar structure.

The utility model also provides a vacuum cleaner including the floor brush.

Compared with the prior art, the present invention arranges the air guide in the middle air flow channel, thereby increasing the suction force at both ends of the housing. In the utility model, the air guide is arranged in a three-dimensional structure with a wide middle and narrow ends, so that the diversion is smoother and the flow loss of the airflow in the diversion process is reduced. The air guide of the utility model can adjust the distance between the second air guide surface and the inner wall of the casing to increase or decrease the cross-sectional area of the air flow of the branch, thereby changing the suction force in the air duct to meet different requirements Draw things.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the vacuum cleaner of the utility model;

Figure 2 is a schematic diagram of the combination of the floor brush of the vacuum cleaner of the present invention;

Figure 3 is an exploded schematic diagram of Figure 2;

Figure 4 is a schematic structural view of the first embodiment of the air guide in the floor brush of the vacuum cleaner of the present invention;

Figure 5 is a schematic structural view of a second embodiment of the air guide in the floor brush of the vacuum cleaner of the present invention;

Fig. 6 is a first cross-sectional schematic diagram of the air guide member of Fig. 4 applied to the floor brush of a vacuum cleaner, which shows the use state when the distance between the second air guide surface and the inner wall of the housing is small;

Fig. 7 is a second cross-sectional schematic diagram of the air guide of Fig. 4 applied to a floor brush of a vacuum cleaner, which shows a use state where the distance between the second air guide surface and the inner wall of the housing is relatively large;

Fig. 8 is a first cross-sectional schematic diagram of the air guide of Fig. 5 applied to the floor brush of a vacuum cleaner, which shows a use state where the distance between the second air guide surface and the inner wall of the housing is relatively small;

Fig. 9 is a second cross-sectional schematic diagram of the air guide of Fig. 5 applied to a floor brush of a vacuum cleaner, which shows a use state where the distance between the second air guide surface and the inner wall of the housing is relatively large.

Detailed ways

Hereinafter, the present utility model will be further described in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present utility model, but not to limit the present utility model. In addition, it should be noted that, for ease of description, the drawings only show a part of the structure related to the present invention, but not all of the structure.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation Therefore, it cannot be understood as a limitation of the present utility model.

In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and defined, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be a connection between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood according to specific circumstances.

In the present invention, unless otherwise clearly defined and defined, the "on" or "under" of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features. The features are not in direct contact but through other features between them. Moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The floor brush of the vacuum cleaner of the present invention is applied to vacuum cleaners, such as vertical vacuum cleaners, horizontal vacuum cleaners, handheld vacuum cleaners, bucket vacuum cleaners, intelligent sweeping robots and so on. Please refer to FIG. 1, the floor brush 1 is applied to a bucket vacuum cleaner 100, and the floor brush 1 is connected to the base of the bucket vacuum cleaner 100 through a connector (not shown). In addition, the floor brush 1 may also be connected to the body assembly of the bucket cleaner 100 through an extension tube.

Please refer to Figures 2-9, the utility model provides a floor brush 1 of a vacuum cleaner, which includes:

A housing 10 that defines an airflow inlet 11, an airflow outlet 12, and an airflow channel that fluidly communicates the airflow inlet 11 and the airflow outlet 12;

The air flow channel is formed by two oppositely arranged side air flow channels and a middle air flow channel located in the middle of the two side air flow channels, and the air flow outlet 12 is located in the middle air flow channel and is in fluid communication with the middle air flow channel;

The floor brush 1 of the vacuum cleaner further includes an air guide 20 which is arranged in the middle air flow channel to divide the middle air flow channel into at least two branches, wherein each of the branches is The locations close to the airflow outlet 12 merge.

Please refer to Figures 2 and 3, in another embodiment of the present invention, the air guide 20 is fixed to the housing 10 through a plurality of mounting parts 30, for example, two separate parts are provided on the housing 10. The first mounting hole is provided with second mounting holes separately on the air guide 20, and the second mounting holes correspond to the first mounting holes one-to-one. The first mounting hole is inserted through the mounting member 30 and then fixed in the second mounting hole, so as to fix the air guide member 20 in the housing 10.

In another embodiment of the present invention, the floor brush 1 of the vacuum cleaner further includes a roller assembly 40 which is separately connected to the housing 10. The floor brush 1 of the vacuum cleaner also includes a rolling brush or a brush strip (not shown). The brush strip can be a fur brush strip and/or a water brush strip, for example, can be placed on the front and rear sides of the air inlet 11 on the housing 10 Install the brush strip and the water brush strip respectively, and the brush strip and the water brush strip are arranged in parallel.

In another embodiment of the present invention, the housing 10 is provided with a first positioning portion (not shown in the figure, for example, it may be a sliding groove), and the air guide 20 is provided with a second positioning portion (not shown in the figure). As shown, for example, it may be a sliding rail), the second positioning portion cooperates with the first positioning portion to facilitate accurate alignment of the air guide 20 in the housing 10 and facilitate the installation of the air guide 20.

Please refer to Figures 4 and 5, in another embodiment of the present invention, the air guide 20 is a hollow cylindrical structure to save the material of the air guide 20, in order to enhance the strength of the hollow cylindrical structure , Stiffening ribs can also be arranged inside the air guide 20.

In another embodiment of the present invention, the air guide 20 is a three-dimensional structure with a wide middle and a narrow end. The design with a wide middle and narrow ends can make the air flow around the air guide 20 more smoothly, and reduce the flow loss of the air flow during the diversion process.

In another embodiment of the present invention, the air guide 20 is a rhombus columnar structure or an O-shaped columnar structure. The cross-sectional area of the air guide 20 changes along the length direction of the housing 10 as follows: first becomes larger and then becomes smaller. The cross-sectional area of the air guide 20 changes along the axis determined by the airflow outlet 12 as follows: first becomes larger and then becomes smaller.

Please refer to Figures 4 and 6, in another embodiment of the present invention, the air guide 20 includes a first air guide surface 231 close to the air flow inlet 11 and a first air guide surface 231 close to the air flow outlet 12 Two air guiding surfaces 232, and a smooth transition between the first air guiding surface 231 and the second air guiding surface 232.

In another embodiment of the present invention, the first air guiding surface 231 divides the airflow of the intermediate airflow channel, and gathers the airflow upward and toward the inner wall of the housing 10 to introduce the branch, and the second air guiding surface 232 divides the branch. The airflow is introduced into the airflow outlet 12.

In another embodiment of the present invention, the second air guide surface 232 and the inner wall of the housing 10 form the branch, and the distance between the second air guide surface 232 and the inner wall of the housing limits the The air flow of the branch passes through the cross-sectional area. The smaller the cross-sectional area of the air flow of the branch, the greater the suction of the branch.

In another embodiment of the present invention, the air guide 20 can be movably arranged in the intermediate air flow channel, so that the second air guide surface 232 can be changed by changing the position of the air guide 20 The distance from the inner wall of the housing 10 changes the cross-sectional area of the air flow of the branch.

Please refer to Figures 6 and 7, in another embodiment of the present invention, the air guide member 20 is movably disposed in the intermediate air flow channel, by making the air guide member 20 in the The airflow outlet 12 moves along an axis determined by the airflow outlet 12 in a direction close to or away from the airflow outlet 12 to change the distance between the second air guiding surface 232 and the inner wall of the housing 10. The air guide 20 moves in a direction away from the air flow outlet 12 on the axis defined by the air flow outlet 12, and the cross-sectional area of the air flow passing through the branch becomes larger; the air guide 20 is positioned at the air flow outlet Moving on the axis determined by 12 in a direction close to the airflow outlet 12, the cross-sectional area of the airflow passing through the branch becomes smaller.

The distance between the second air guide surface 232 and the inner wall of the housing 10 in FIG. 6 is relatively small. At this time, if the cross-sectional area of the air flow of the branch is smaller, the suction force of the branch is larger; and FIG. 7 The distance between the second air guide surface 232 and the inner wall of the housing 10 is relatively large. At this time, if the cross-sectional area of the air flow of the branch is larger, the suction force of the branch is smaller.

Please refer to Figures 8 and 9, in another embodiment of the present invention, the air guide 20 is rotatably disposed in the middle air flow channel, by rotating the air guide 20 , In order to exchange the relative positions of the first air guiding surface 231 and the second air guiding surface 232, and the first air guiding surface 231 is close to the airflow inlet 11 and the housing The distance between the inner wall of 10 is not equal to the distance between the second air guide surface 232 and the inner wall of the housing 10 when it is located close to the air inlet 11.

In another embodiment of the present invention, the air guide 20 is arranged in a cam shape, the air guide 20 can rotate around a rotating shaft, the air guide 20 rotates to different positions, and the first air guide surface 231 and The second air guiding surface 232 also changes. In this embodiment, the first air guiding surface 231 may be a flat air guiding surface or a curved air guiding surface; the second air guiding surface 232 may be a flat air guiding surface. A wind guide surface or a curved wind guide surface, the curved wind guide surface is curved toward the radially outer side.

The air guide 20 is connected to the housing 10 via a rotating shaft. When the air guide 20 rotates to a first position relative to the housing 10, the first air guide surface 231 is a flat air guide surface, The second air guiding surface 232 is a curved air guiding surface.

When the air guide 20 rotates to a second position relative to the housing 10, the second position is deflected by 180 degrees relative to the first position, the first air guide surface 231 is a curved air guide surface, and The second air guiding surface 232 is a flat air guiding surface.

FIG. 8 shows that the air guide 20 rotates to the first position relative to the housing 10, and the distance between the second air guide surface 232 and the inner wall of the housing 10 is relatively small. If the cross-sectional area of the air flow is smaller, the suction of the branch is greater; and FIG. 9 shows that the distance between the second air guide surface 232 and the inner wall of the housing 10 is larger. At this time, the air flow of the branch is With a larger cross-sectional area, the suction of the branch is smaller.

In summary, the present utility model arranges the air guide in the middle air flow channel, thereby improving the suction force at both ends of the casing. In the utility model, the air guide is arranged in a three-dimensional structure with a wide middle and narrow ends, so that the diversion is smoother and the flow loss of the airflow in the diversion process is reduced. The air guide of the utility model can adjust the distance between the second air guide surface and the inner wall of the casing to increase or decrease the cross-sectional area of the air flow of the branch, thereby changing the suction force in the air duct to meet different requirements Draw things.

Note that the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present utility model. The scope of the present invention is determined by the scope of the appended claims.

Claims

A floor brush of a vacuum cleaner, including:

A housing that defines an airflow inlet, an airflow outlet, and an airflow channel that fluidly communicates the airflow inlet and the airflow outlet;

It is characterized by

The air flow channel is formed by two oppositely arranged side air flow channels and a middle air flow channel located in the middle of the two side air flow channels, and the air flow outlet is located in the middle air flow channel and is in fluid communication with the middle air flow channel;

The floor brush further includes an air guide, the air guide is arranged in the middle air flow channel to divide the middle air flow channel into at least two branch paths, wherein each of the branch paths is close to the air flow outlet The locations converge.
The floor brush of a vacuum cleaner according to claim 1, wherein:

The air guide includes a first air guide surface close to the air flow inlet and a second air guide surface close to the air flow outlet, and a smooth transition between the first air guide surface and the second air guide surface.
The floor brush of a vacuum cleaner according to claim 2, wherein the second air guide surface and the inner wall of the housing form the branch, and the distance between the second air guide surface and the inner wall of the housing The air flow of the branch is restricted to pass through the cross-sectional area.
The floor brush of a vacuum cleaner according to claim 3, wherein the air guide is movably arranged in the intermediate air flow channel, so that the second guide is changed by changing the position of the air guide The distance between the wind surface and the inner wall of the shell.
The floor brush of a vacuum cleaner according to claim 4, characterized in that: the air guide is movably disposed in the middle air flow channel, by which the air guide is along an axis determined by the air outlet Move closer to or away from the air flow outlet to change the distance between the second air guide surface and the inner wall of the housing.
The floor brush of a vacuum cleaner according to claim 4, wherein the air guide is rotatably disposed in the middle air flow channel, and the first air guide is rotated by rotating the air guide. The relative position of an air guiding surface and the second air guiding surface, and the distance between the first air guiding surface and the inner wall of the housing when it is located close to the airflow inlet is not equal to the second air guiding surface The distance between the surface and the inner wall of the housing when it is located close to the airflow inlet.
The floor brush of a vacuum cleaner according to claim 1, wherein the air guide is a hollow cylindrical structure.
The floor brush of a vacuum cleaner according to claim 1, wherein the air guide is a three-dimensional structure with a wide middle and a narrow end.
The floor brush of a vacuum cleaner according to claim 8, wherein the air guide has a rhombus columnar structure or an O-shaped columnar structure.
A vacuum cleaner, characterized by comprising the floor brush of the vacuum cleaner according to any one of claims 1 to 9.