Floor brush

Abstract

The floor brush comprises a shell, a bent pipe and a lifting unit, a suction opening is formed in the bottom of the shell, and the position, located on the rear portion of the suction opening, of the shell is connected with a rear side roller assembly; the bent pipe is rotatably connected with the rear part of the shell; the rear side roller assembly is connected to the shell through the lifting unit, when the floor brush is pulled back towards the rear side, the rear side of the suction opening is lifted, and the lifting unit drives the rear side roller assembly to be supported on the suction face. When the floor brush is pushed to the front side, under the action of pushing force, the roller assembly on the rear side ascends relative to the shell, and it is guaranteed that the distance between a suction opening and a suction face is reduced, the emptiness of a suction cavity is improved, and the capacity of sucking tiny dust is improved; when the floor brush is pulled back to the rear side, the rear side rolling wheel assembly descends relative to the shell to be supported on the suction face, the gap between the suction opening and the suction face can be enlarged, large particles can be sucked, the dust suction capacity and the moving stability of the floor brush can be guaranteed while large-particle dust is sucked in the front-back push-pull process, and the user experience feeling is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a floor brush. BACKGROUND

[0002] The floor brush is an essential component of a vacuum cleaner. A suction port is formed in the bottom of the floor brush, and a roller brush is arranged at the suction port. In use, the floor brush (suction port) is attached to the ground, and the roller brush sweeps up the dust particles on the ground to achieve dust suction. For the floor brush, the better the suction port is attached to the ground, the higher the vacuum degree, and the better the dust suction effect. However, when there are large particle impurities on the ground, the suction port is too attached to the ground and it is difficult to suck up the large particle impurities. Therefore, many floor brushes are provided with an auxiliary suction port in the front of the shell body and in communication with the suction port, so that when the floor brush is pushed forward, the large particle impurities can be sucked up through the auxiliary suction port. However, when the floor brush is pulled back, there is still a problem of difficulty in sucking up the large particle impurities because there is no auxiliary suction port. SUMMARY

[0003] The purpose of the present application is to provide a floor brush, in particular a floor brush that can suck up large particles when pulled back.

[0004] To achieve the above purpose, the technical solution adopted by the present application is as follows:

[0005] A floor brush comprises:

[0006] A shell body, wherein a suction port is formed in the bottom of the shell body, an internal suction passage is arranged in the shell body, and a rear roller assembly is connected to the rear part of the suction port of the shell body;

[0007] An elbow pipe, wherein the elbow pipe is rotatably connected to the rear part of the shell body, the internal suction passage of the shell body is in communication with the suction port through the elbow pipe,

[0008] A lifting unit, wherein the rear roller assembly is connected to the shell body through the lifting unit, the rear part of the suction port is lifted when the floor brush is pulled back, and the lifting unit drives the rear roller assembly to be supported on the suction surface.

[0009] Preferably, the rotational axis of the elbow pipe is parallel to the rotational axis of the rear roller assembly, and the rotational axis of the elbow pipe is located in front of the rotational axis of the rear roller assembly.

[0010] Preferably, the lifting unit comprises an elastic component, the elastic component is connected between the housing and the rear roller assembly, when the floor brush is pushed forward, the rear part of the housing is lowered, and the elastic component is compressed; when the floor brush is pulled back, the rear part of the suction port is lifted, and the elastic component is released and drives the rear roller assembly to support on the suction surface.

[0011] Further preferably, the lifting unit further comprises a fixing seat and a pressing plate, the elastic component is connected between the fixing seat and the pressing plate; the rear roller assembly comprises a wheel body and an axle, the wheel body is installed on the fixing seat through the axle.

[0012] Preferably, the housing is provided with a mounting space, and the lifting unit is arranged in the mounting space.

[0013] Preferably, the rear roller assemblies are symmetrically arranged at the rear part of the housing on both sides of the elbow pipe, and each rear roller assembly is provided with the lifting unit.

[0014] Preferably, the front roller is connected to the front part of the housing, and the front roller always supports on the suction surface when the floor brush is pushed forward or pulled back.

[0015] Further preferably, the front roller is provided with a plurality of front rollers, and the front rollers are uniformly distributed on the front part of the housing, thereby improving the stability of the front part of the housing when the floor brush is pushed forward or pulled back.

[0016] Preferably, the housing is provided with a sealing strip at the bottom, the sealing strip is located between the suction port and the rear roller assembly, the sealing strip is attached to the suction surface when the floor brush is pushed forward, and the sealing strip is separated from the suction surface when the floor brush is pulled back, thereby improving the vacuum degree between the suction port and the suction surface through the sealing strip, and improving the dust collection efficiency.

[0017] Preferably, the housing is provided with a rolling brush inside, and the bottom of the rolling brush is exposed to the suction port.

[0018] Preferably, the front part of the bottom of the housing is provided with an auxiliary air inlet, the auxiliary air inlet is communicated with the suction port, and the auxiliary air inlet can suck large particles of dust.

[0019] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0020] The present application sets the lifting unit, so that the rear roller assembly can be lifted up and down, when the brush is pushed forward, under the action of forward and downward pushing force, the rear part of the shell is pressed down, the rear roller assembly is lifted relative to the shell, which ensures the reduction of the distance between the suction port and the suction surface, improves the emptying degree of the suction chamber, and improves the ability to suck small dust; when the brush is pulled back, under the action of backward and upward pulling force, the rear part of the shell is pulled up, the rear roller assembly is lowered relative to the shell and supported on the suction surface, which can increase the gap between the suction port and the suction surface, and the brush can still maintain stable support on the ground while sucking large particles.

[0021] The present application can realize the suction of large particle dust during forward and backward pushing and pulling, while ensuring the dust suction capacity of the brush, ensuring the stability of the brush movement and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings illustrate the present application by way of example for the purposes of schematization and illustration only, and in which: Figure 1 Fig. 1 is a structural schematic diagram of the present application;

[0023] Fig. 2 is a split schematic diagram of the present application; Figure 2 Fig. 3 is a side view schematic diagram of the present application;

[0024] Figure 3 Fig. 4 is a schematic diagram of the present application when pushed forward;

[0025] Fig. 5 is a front view schematic diagram of the present application when pushed forward; Figure 4 5 Fig. 6 is a schematic diagram of the present application when pulled back;

[0026] Fig. 7 is a front view schematic diagram of the present application when pulled back. Figure 6 Fig. 8 is a schematic diagram of the present application when pushed forward;

[0027] Figure 7 Fig. 9 is a schematic diagram of the present application when pulled back. 8 Fig. 10 is a front view schematic diagram of the present application when pulled back.

[0028] Figure 9 The above drawings:

[0029]

[0030] 1, shell; 10, suction port; 100, mounting space; 11, auxiliary air inlet; 12, roller brush; 13, front roller; 14, rear roller assembly; 140, wheel body; 141, axle; 15, sealing strip;

[0031] 2, elbow;

[0032] 30, fixing seat; 31, pressing plate; 32, elastic part. DETAILED DESCRIPTION

[0033] ​​​​​The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] As shown in Figure 1 , 2 A brush, comprising a shell 1, an elbow pipe 2. Specifically:

[0036] The bottom of the shell 1 is provided with a suction port 10, which is used to suck dust and particles on the suction surface (floor, carpet, etc.). The suction port 10 is located in the middle of the bottom of the shell 1 and extends along the width direction. Usually, the suction port 10 is a rectangular opening. The shell 1 is internally provided with a suction channel (not shown in the figure) which communicates with the suction port 10 and is used to transport the dust and particles sucked from the suction port 10. In this embodiment, the front side of the bottom of the shell 1 is also provided with an auxiliary air inlet 11 which communicates with the suction port 10. The auxiliary air inlet 11 can be used to suck large particle dust when the brush is pushed forward. In the illustration, multiple auxiliary air inlets 11 are provided, which are uniformly distributed. The auxiliary air inlets 11 can be used to suck large particle dust.

[0037] The shell 1 is internally provided with a rolling brush 12, the bottom of which is exposed to the suction port 10. During the suction process, the rolling brush 12 can sweep up the dust and particles on the ground, which are then sucked away through the suction port 10 and the suction channel.

[0038] The front part of the shell 1 is connected with a front roller 13, which is a support for the front part of the shell 1. When the brush is pushed forward or pulled backward, the front roller 13 is always supported on the suction surface. Multiple front rollers 13 are provided, which are uniformly distributed on the front part of the shell 1, improving the stability of the support of the front part of the shell 1. In the illustration, two front rollers 12 are provided, which are respectively located on both sides of the front part of the shell 1.

[0039] The rear side roller assembly 14 is connected to the rear part of the shell 1, and is a support for the rear part of the shell 1. The rear side roller assembly 14 is symmetrically arranged on the rear part of the shell 1 on both sides of the elbow pipe 2, and can improve the stability of the support for the rear part of the shell 1. In this embodiment, the rear side roller assembly 14 comprises a wheel body 140 and a wheel shaft 141. The wheel body 140 is rotatably connected (sleeved) to the wheel shaft 141.

[0040] The elbow pipe 2 is rotatably connected to the rear part of the shell 1, so that the suction port 10, the suction channel and the inside of the elbow pipe 2 are sequentially communicated, and the suctioned dust and particles are transported out. In this embodiment, the rotation axis A of the elbow pipe 2 is parallel to the rotation axis B of the rear side roller assembly, and the rotation axis A of the elbow pipe 2 is located in front of the rotation axis B of the rear side roller assembly, as shown in Figure 3

[0041] In this embodiment, the floor brush further comprises a lifting unit. The rear side roller assembly 14 is connected to the shell 1 through the lifting unit. When the floor brush is pulled back, the rear part of the shell 1 is forced to be lifted, so that the rear side of the suction port 10 is lifted. The lifting unit can drive the wheel body 140 of the rear side roller assembly 14 to support on the suction surface, so that the gap between the suction port 10 of the floor brush and the suction surface is generated while the stability of the floor brush movement is maintained. The following specifically gives an embodiment of the lifting unit:

[0042] The lifting unit comprises a fixed seat 30, a pressing plate 31 and an elastic component 32. The elastic component 32 can be, for example, a spring. The elastic component 32 is connected between the fixed seat 30 and the pressing plate 31, and can be stretched and contracted between the fixed seat 30 and the pressing plate 31. The wheel shaft 141 of the rear side roller assembly 14 is installed on the fixed seat 30, such as being screwed on the fixed seat 30 by threads.

[0043] Correspondingly, the shell 1 is provided with a mounting space 100. The lifting unit is arranged in the mounting space 100. The mounting space 100 has a predetermined height. After the elastic component 32 is compressed, the rear side roller assembly 14 is lifted within the height of the mounting space 100, which is equivalent to being retracted into the shell 1.

[0044] As shown in Figures 4-6 When the floor brush is pushed forward, the wheel body 140 of the front side roller 13 and the rear side roller assembly 14 is supported on the suction surface. Under the action of the pushing force, the rear part of the shell 1 is forced to be lowered. The elastic component 32 is compressed. The rear side roller assembly 14 is lifted. The suction port 10 of the shell 1 is more closely attached to the suction surface. The sealing contact between the suction port 10 and the suction surface is ensured. The ability to suction fine dust is improved.

[0045] As shown in Figures 7-9 ​As shown: when the floor brush is pulled back, the front roller 13 is still supported on the suction surface, the rear of the shell 1 is forced to lift under the action of the pulling force, the elastic member 32 is released to drive the wheel body 140 of the rear roller assembly 14 to support on the suction surface, so that a larger gap is formed between the rear of the suction port 10 and the suction surface, and large-particle dust can be sucked.

[0046] In addition, the bottom of the shell 1 is provided with a sealing strip 15, which can be selected as a leather strip. The sealing strip 15 is located between the suction port 10 and the rear roller assembly 14. When the floor brush is pushed forward, the sealing strip 15 is in close contact with the suction surface, further improving the sealing between the suction port 10 and the suction surface; when the floor brush is pulled back, the sealing strip 15 is also separated from the suction surface, without affecting the suction of large-particle dust. The sealing strip 15 can better improve the vacuum degree between the suction port 10 and the suction surface when the floor brush is pushed forward, and improve the dust collection efficiency.

[0047] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A floor brush, comprising: Housing (1): The bottom of the housing (1) is provided with a suction port (10), the inside of the housing (1) is provided with a suction channel, and the rear roller assembly (14) is connected to the rear of the housing (1) at the suction port (10). Bending tube (2): The bending tube (2) is rotatably connected to the rear part of the housing (1), and the interior of the bending tube (2) is connected to the suction port (10) through the suction channel. The feature is that the floor brush further includes a lifting unit, the rear roller assembly (14) is connected to the housing (1) through the lifting unit, when the floor brush is pulled back to the rear, the rear side of the suction port (10) is raised, and the lifting unit drives the rear roller assembly (14) to be supported on the suction surface.

2. The floor brush according to claim 1, characterized in that: The rotation axis of the bent pipe (2) is parallel to the rotation axis of the rear roller assembly (14), and the rotation axis of the bent pipe (2) is located in front of the rotation axis of the rear roller assembly (14).

3. The floor brush according to claim 1, characterized in that: The lifting unit includes an elastic component (32), which is connected between the housing (1) and the rear roller assembly (14). When the floor brush is pushed forward, the rear of the housing (1) descends, and the elastic component (32) is compressed. When the floor brush is pulled back, the rear of the suction port (10) is raised, the elastic component (32) is released, and the rear roller assembly (14) is supported on the suction surface.

4. The floor brush according to claim 3, characterized in that: The lifting unit also includes a fixed seat (30) and a pressure plate (31), and the elastic component (32) is connected between the fixed seat (30) and the pressure plate (31); the rear roller assembly (14) includes a wheel body (140) and a wheel axle (141), and the wheel body (140) is mounted on the fixed seat (30) through the wheel axle (141).

5. The floor brush according to claim 1 or 4, characterized in that: The housing (1) is provided with an installation space (100), and the lifting unit is disposed in the installation space (100).

6. The floor brush according to claim 1, characterized in that: The rear roller assembly (14) is symmetrically arranged on both sides of the rear of the housing (1) on both sides of the bend (2).

7. The floor brush according to claim 1, characterized in that: The housing (1) is connected to a front roller (13) at the front of the suction port (10). When the floor brush is pushed forward or pulled back, the front roller (13) is always supported on the suction surface.

8. The floor brush according to claim 7, characterized in that: The front roller (13) is provided in multiple forms; Multiple front rollers (13) are evenly distributed on the front of the housing (1).

9. The floor brush according to claim 1, characterized in that: The bottom of the housing (1) is provided with a sealing strip (15), which is located between the suction port (10) and the rear roller assembly (14). When the floor brush is pushed forward, the sealing strip (15) is in contact with the suction surface; when the floor brush is pulled back to the rear, the sealing strip (15) is disengaged from the suction surface.

10. The floor brush according to claim 1, characterized in that: The housing (1) is provided with a roller brush (12) inside, and the bottom of the roller brush (12) exposes the suction port (10); An auxiliary air inlet (11) is provided on the front side of the bottom of the housing (1), and the auxiliary air inlet (11) is connected to the suction port (10).

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