Floor brush

Abstract

The present application relates to a floor brush comprising: a floor brush body, the floor brush body being provided with an air duct, the bottom of the floor brush body being provided with an air inlet connected to the floor duct; an axle fixed to the bottom of the floor brush body; and a roller coaxially rotatably sleeved on the axle. The axis of the axle is arranged at a non-zero angle to the cleaning surface of the floor brush. The present application can reduce or even eliminate the noise generated by the floor brush moving along the cleaning surface.

Description

Technical Field

[0001] The present application relates to a floor brush, in particular to a floor brush for a vacuum cleaner. Background Art

[0002] The floor brush used in conjunction with the vacuum cleaner is usually equipped with a small-sized roller 3 for easy movement. Figure 1 However, the traditional floor brush will make a lot of noise during use, especially when the floor brush moves quickly against the cleaning work surface a, which affects the user experience.

[0003] After research, we found that when the floor brush moves quickly, the small-sized roller 3 at the bottom moves back and forth along the wheel shaft 2 and hits the floor brush body 1, which is the direct cause of the loud noise. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide a floor brush to reduce or even eliminate the noise of the floor brush moving along the cleaning work surface.

[0005] The technical solution of this application is:

[0006] A floor brush, comprising:

[0007] A floor brush body, wherein an air duct is provided in the floor brush body, and an air inlet communicating with the floor air duct is provided at the bottom of the floor brush body;

[0008] an axle, the axle being fixed to the bottom of the floor brush body;

[0009] A roller, the roller being coaxially rotatably sleeved on the wheel axle;

[0010] The axis of the wheel shaft is arranged at a non-zero angle to the cleaning working surface of the floor brush.

[0011] Based on the above technical solutions, this application also includes the following preferred solutions:

[0012] A wool felt is sleeved on the wheel axle, and the wool felt is arranged on the axial side of the roller away from the cleaning working surface.

[0013] The wool felt is fixedly connected to the floor brush body.

[0014] The wheel axle is also sleeved with a second wool felt located on the other axial side of the roller close to the cleaning working surface.

[0015] The angle between the axis of the wheel axle and the cleaning working surface is 1-30°.

[0016] Two of the wheel axles and two of the rollers are provided, and the two rollers are spaced apart, one on the left and one on the right.

[0017] The included angles between the axes of the two wheel shafts and the cleaning working surface of the floor brush are equal, and the two wheel shafts are symmetrically arranged on the left and right sides of the vertical plane of the cleaning working surface.

[0018] The vertical plane of the cleaning working surface is the central section of the floor brush in the left and right width directions.

[0019] There are four axles and four rollers respectively, and two of the rollers are arranged at intervals on the front side of the air inlet, one on the left and one on the right, and the other two rollers are arranged at intervals on the rear side of the air inlet, one on the left and one on the right.

[0020] The floor brush body includes a floor brush shell and a wheel seat fixedly connected to the floor brush shell, the wheel axle is fixed to the wheel seat, and the air inlet is formed on the wheel seat.

[0021] This application can achieve the following beneficial effects:

[0022] 1. When the roller rolls against the cleaning surface, it is subjected to a vertical thrust from the cleaning surface. Because the axle supporting the roller is tilted, forming a certain angle with the cleaning surface of the floor brush during use, the roller always tends to climb upward along the axle axis under the action of the aforementioned vertical thrust. This prevents the roller from moving back and forth along the axle axis and striking the floor brush body, producing noise.

[0023] 2. The roller coaxial with the wheel axle is also tilted at a certain angle, so that the roller and the floor brush (including wool felt) are in line contact, which improves the noise caused by the original surface friction.

[0024] 3. Wear-resistant wool felt is placed on the axle and placed on the axial side of the roller away from the cleaning surface. When working, the wool felt separates the roller from the hard brush body, thereby reducing friction and eliminating noise, and extending the service life of the roller.

[0025] 4. Fix the wool felt to the floor brush body to keep the wool felt flat and prevent it from curling and deforming due to friction from the roller during work.

[0026] 5. The angles between the two wheel axles and the cleaning working surface are equal, and the two wheel axles are symmetrically arranged on the left and right sides of the vertical plane of the cleaning working surface, so that there will be no problem of directional deviation when the floor brush moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not limitations to the present application.

[0028] Figure 1It is a schematic diagram of the cross-sectional structure of a traditional floor brush when cleaning a horizontal cleaning work surface, wherein one of the rollers is not shown.

[0029] Figure 2 This is a schematic diagram of the cross-sectional structure of the floor brush of an embodiment of the present application when cleaning a horizontal cleaning work surface, wherein one of the rollers is not shown.

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the floor brush of an embodiment of the present application when cleaning a vertical cleaning work surface, wherein one of the rollers is not shown.

[0031] Figure 4 This is a schematic diagram of the cross-sectional structure of the floor brush of an embodiment of the present application when cleaning an inclined cleaning work surface, wherein one of the rollers is not shown.

[0032] Figure 5 yes Figure 4 A partial enlarged view of .

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the floor brush according to an embodiment of the present application.

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the floor brush from another perspective according to an embodiment of the present application.

[0035] Figure 8 This is a bottom view of the brush according to an embodiment of the present application.

[0036] Wherein: a-cleaning working surface, b-cleaning vertical surface of working surface, 1-floor brush body, 2-axle, 3-roller, 4-wool felt, 5-travel wheel, 6-brush;

[0037] 101- floor brush housing, 102- wheel seat, 102a- air inlet. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons having ordinary skills in the field to which this application belongs. The words "a" or "an" and the like used in the patent application specification and claims of this application do not indicate a limitation on quantity, but rather indicate the presence of at least one.

[0040] Now, embodiments of the present application are described with reference to the accompanying drawings.

[0041] Figures 2 to 8 A preferred embodiment of the floor brush of the present application is shown. Similar to most existing floor brushes, the floor brush of this embodiment also includes a floor brush body 1, two wheel axles 2 fixed to the bottom of the floor brush body, two small-sized rollers 3 rotatably mounted on the two wheel axles, and two large-sized running wheels rotatably mounted on the floor brush body. The rollers 3 are coaxially arranged with the corresponding wheel axles 2. An air duct is defined in the floor brush body 1. An air inlet 102a communicating with the aforementioned air duct is provided at the bottom of the floor brush body 1. A brush 6 is rotatably mounted inside the air inlet 102a. A motor for driving the aforementioned brush 6 to rotate to sweep dust is also provided in the floor brush body 1. During operation, the floor brush is connected to a vacuum cleaner, and the aforementioned air duct on the floor brush is then communicated with the air duct of the vacuum cleaner. When the vacuum cleaner is powered on, a negative pressure airflow is generated by the floor brush air inlet, the floor brush air duct, and the vacuum cleaner air duct. The user drags the floor brush, makes its roller 3 and the traveling wheel 5 stick to the cleaning working surface a, and drags the floor brush to move, thereby sucking the dust on the cleaning working surface a into the dust cup of the vacuum cleaner through the floor brush air inlet, the floor brush air duct, and the vacuum cleaner air duct in sequence.

[0042] exist Figure 2 In the present invention, the floor brush is used to clean the horizontal ground, so its cleaning working surface a is a horizontal surface. Figure 3 In the present invention, the floor brush is used to clean the vertical wall, so its cleaning working surface a is a vertical surface perpendicular to the horizontal surface. Figure 4 In the embodiment, the floor brush is used to clean the inclined surface of furniture, so its cleaning working surface a is an inclined surface which is at a certain angle to the horizontal plane and the vertical plane.

[0043] Reference Figures 2 to 5 As shown, the key improvement of this embodiment is that the axis of each wheel axle 2 is arranged at a non-zero angle with the cleaning working surface a of the floor brush.

[0044] As the roller 3 rolls against the cleaning surface a, it is subjected to a vertical thrust (perpendicular to the cleaning surface a) from the cleaning surface a. Because the axle 2 of the roller 3 is tilted in this embodiment, forming a certain angle with the cleaning surface a during use, the roller 3 always tends to climb upward along the axis of the axle 2 under the action of the aforementioned vertical thrust. This prevents the roller 3 from moving back and forth along the axis of the axle 2 and colliding with the brush body 1, generating noise.

[0045] When working, the wheel shaft 2 is arranged at an angle to the cleaning working surface a of the floor brush, so the distances between the two axial ends of the wheel shaft 2 and the cleaning working surface a are not equal. Figure 1 The right end of the right wheel axle 2) is closer to the cleaning working surface a, while the second end (such as Figure 1The left end of the right axle 2 is further away from the cleaning surface a. The roller 3 mounted on the axle 2 necessarily has two axial sides that diverge from each other, with the first axial side facing the first end of the axle 2 and the second axial side facing the second end of the axle 2. Therefore, correspondingly, the first axial side of the roller 3 is closer to the cleaning surface a, while the second axial side is further away from the cleaning surface a.

[0046] It is easy to understand that under the vertical thrust of the cleaning working surface a, the roller 3 has a tendency to move toward the second axial side mentioned above (that is, to climb upward along the axis of the wheel shaft 2). This axial movement tendency of the roller 3 will cause it to contact and rub against the floor brush body 1 (specifically, the roller seat, see below). This contact friction will not only wear the roller 3 and the floor brush body 1, but also generate more or less noise. Based on this, in this embodiment, a wear-resistant wool felt 4 is sleeved on the wheel shaft 2, and the wool felt 4 is arranged on the axial side of the roller 3 away from the cleaning working surface a - that is, the second axial side mentioned above (such as Figure 1 During operation, the roller 3 is separated from the hard floor brush body 1 (specifically, the roller seat) by the wool felt 4, thereby reducing friction and eliminating noise, and increasing the service life of the roller 3.

[0047] The wool felt 4 can be fixed to the floor brush body 1, or can be directly sleeved outside the wheel shaft 2 without being fixed to other components. In this embodiment, the wool felt 4 is fixed to the floor brush body 1.

[0048] Of course, we can also put a second piece of wool felt on the wheel axle 2 and arrange this second piece of wool felt on the other axial side of the roller 3 close to the cleaning working surface a - that is, the first axial side mentioned above. Similarly, the second piece of wool felt can be fixed to the floor brush body 1, or it can be directly put on the outside of the wheel axle 2 without being fixed to other components.

[0049] In this embodiment, the two rollers 3 are arranged at intervals on the left and right, and are both arranged on the front side of the air inlet 102a, and the two large traveling wheels 5 are arranged on the rear side of the air inlet 102a, so as to more stably support the movement of the floor brush.

[0050] As mentioned above, the axes of the two axles 2 are arranged at a non-zero angle with the cleaning surface a of the floor brush. If the angles between the axes of the two axles 2 and the cleaning surface a are inconsistent, the floor brush will easily deviate from its direction during movement. For this reason, the axes of the two axles 2 are arranged at equal angles with the cleaning surface a of the floor brush, and the two axles 2 are symmetrically arranged on the left and right sides of the vertical plane b of the cleaning surface a.

[0051] The so-called "vertical plane of the cleaning working surface" refers to the plane perpendicular to the cleaning working surface a. Obviously, there are infinite planes perpendicular to the cleaning working surface, and the vertical plane b of the cleaning working surface a is specifically the central section of the brush in the left and right width directions, such as Figure 1 .

[0052] The angle between the axis of the wheel shaft 2 and the cleaning working surface a should not be too small or too large, and is preferably 1-30°.

[0053] Similar to some conventional floor brushes, the floor brush body 1 of this embodiment also includes a floor brush housing 101 and a wheel base 102 fixedly connected to the floor brush housing. The wheel axle 2 is specifically fixed to the wheel base 102, and the air inlet 102a is formed on the wheel base 102.

[0054] It should be noted that in some other embodiments of the present application, the number of axles 2 and rollers 3 can also be set to one, three, four, etc. To ensure balanced movement of the floor brush, the number of axles 2 and rollers 3 is usually an even number, most commonly two in this embodiment or four in other embodiments. If there are four axles 2 and rollers 3, they are usually arranged as follows: two rollers 3 are arranged in front of the air inlet, one on the left and one on the right, and the other two rollers 3 are arranged in rear of the air inlet, one on the left and one on the right.

[0055] Regardless of whether the floor brush is equipped with two, four or other numbers of axles 2 and rollers 3, we can install at least one of the axles 2 at an angle so that its axis is arranged at a non-zero angle with the cleaning working surface a of the floor brush, so that the roller 3 on the corresponding axle 2 will not move back and forth along the axle 2 and make noise during operation. Obviously, this solution has been covered by the protection scope of the claims of this application - claim 1 of this application only limits the floor brush to be equipped with rollers with tilted axles, and does not limit the axles of all rollers of the floor brush to tilt.

[0056] The above are merely exemplary embodiments of the present application and are not intended to limit the scope of protection of the present application. The scope of protection of the present application is determined by the appended claims.

Claims

1. A floor brush, comprising: A floor brush body (1), wherein an air duct is provided in the floor brush body, and an air inlet (102a) communicating with the air duct is provided at the bottom of the floor brush body; A wheel axle (2), the wheel axle being fixed to the bottom of the floor brush body; A roller (3), the roller being coaxially rotatably sleeved on the wheel shaft; The invention is characterized in that the axis of the wheel axle (2) is arranged at a non-zero angle with the cleaning working surface (a) of the floor brush, and thereby the cleaning working surface (a) applies a force to the roller (3) causing the roller (3) to climb upward along the axis of the wheel axle (2), and the force inhibits the roller (3) from moving back and forth along the axis of the wheel axle (2) and colliding with the floor brush body (1).

2. The floor brush according to claim 1, characterized in that: A wool felt (4) is sleeved on the wheel axle (2), and the wool felt (4) is arranged on the axial side of the roller (3) away from the cleaning working surface (a).

3. The floor brush according to claim 2, characterized in that: The wool felt (4) is fixedly connected to the floor brush body (1).

4. The floor brush according to claim 2, characterized in that: The wheel shaft (2) is also sleeved with a second wool felt located on the other axial side of the roller (3) close to the cleaning working surface (a).

5. The floor brush according to claim 1, characterized in that: The angle between the axis of the wheel shaft (2) and the cleaning working surface (a) is 1-30°.

6. The floor brush according to any one of claims 1 to 5, characterized in that: Two of the wheel axles (2) and two of the rollers (3) are provided, and the two rollers (3) are spaced apart and arranged one on the left and one on the right.

7. The floor brush according to claim 6, characterized in that: The included angles between the axes of the two wheel axles (2) and the cleaning working surface (a) of the floor brush are equal, and the two wheel axles (2) are symmetrically arranged on the left and right sides of the vertical surface (b) of the cleaning working surface (a).

8. The floor brush according to claim 7, characterized in that: The vertical surface (b) of the cleaning working surface (a) is the central section of the floor brush in the left and right width directions.

9. The floor brush according to claim 1, characterized in that: Four of the wheel axles (2) and four of the rollers (3) are provided, and two of the rollers (3) are arranged at intervals on the front side of the air inlet, one on the left and one on the right, and the other two rollers (3) are arranged at intervals on the rear side of the air inlet, one on the left and one on the right.

10. The floor brush according to claim 1, characterized in that: The floor brush body (1) comprises a floor brush shell (101) and a wheel seat (102) fixedly connected to the floor brush shell, the wheel axle (2) is fixed to the wheel seat (102), and the air inlet (102a) is formed on the wheel seat (102).

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