Floor brush

Abstract

This utility model relates to a floor brush, including a housing, a curved tube, and a lifting unit. A suction port is located at the bottom of the housing, and a rear roller assembly is connected to the rear of the housing at the suction port. The curved tube is rotatably connected to the rear of the housing. The rear roller assembly is connected to the housing via the lifting unit. When the floor brush is pulled back, the rear of the suction port rises, and the lifting unit drives the rear roller assembly to support itself on the suction surface. When the floor brush is pushed forward, the rear roller assembly rises relative to the housing under the thrust, ensuring a reduced distance between the suction port and the suction surface, increasing the vacuum level of the suction chamber, and improving the ability to suck up fine dust. When the floor brush is pulled back, the rear roller assembly descends relative to the housing and supports itself on the suction surface, increasing the gap between the suction port and the suction surface, allowing for the suction of larger particles. During the forward and backward pushing and pulling process, the suction of large dust particles is achieved while maintaining the floor brush's suction capacity and movement stability, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a floor brush. Background Technology

[0002] The floor brush is an essential component of a vacuum cleaner. It has a suction port at the bottom, with a roller brush attached. During use, the floor brush (suction port) is placed against the floor, and the roller brush, in conjunction with the suction port, sweeps up dust particles for vacuuming. For a floor brush, the better the suction port's contact with the floor, the higher the vacuum level and the better the suction effect. However, when there are large particles of debris on the floor, an overly close contact with the floor brush makes it difficult to remove them. Therefore, many floor brushes have an auxiliary suction port at the front of the casing, connected to the suction port. This allows large particles to be sucked up when the brush is pushed forward; however, when the brush is pulled back, without this auxiliary suction port, large particles still remain difficult to remove. Summary of the Invention

[0003] The purpose of this invention is to provide a floor brush, particularly a floor brush that can suck up large particles when pulled back.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A floor brush, comprising:

[0006] Housing: The bottom of the housing is provided with a suction port, the inside of the housing is provided with a suction channel, and the rear roller assembly is connected to the rear part of the housing at the suction port.

[0007] Bending tube: The bending tube is rotatably connected to the rear part of the housing, and the interior of the bending tube communicates with the suction port through the suction channel.

[0008] Lifting unit: The rear roller assembly is connected to the housing through the lifting unit. When the floor brush is pulled back to the rear, the rear side of the suction port is raised, and the lifting unit drives the rear roller assembly to support the suction surface.

[0009] Preferably, in the above technical solution, the rotation axis of the bent pipe is parallel to the rotation axis of the rear roller assembly, and the rotation axis of the bent pipe is located in front of the rotation axis of the rear roller assembly.

[0010] Preferably, in the above technical solution, the lifting unit includes an elastic component connected between the housing and the rear roller assembly. When the floor brush is pushed forward, the rear of the housing descends, and the elastic component is compressed. When the floor brush is pulled back, the rear of the suction port is raised, the elastic component is released, and the rear roller assembly is supported on the suction surface.

[0011] More preferably, the lifting unit further includes a fixed seat and a pressure plate, and the elastic component is connected between the fixed seat and the pressure plate; the rear roller assembly includes a wheel body and a wheel axle, and the wheel body is mounted on the fixed seat through the wheel axle.

[0012] Preferably, in the above technical solution, the housing is provided with an installation space, and the lifting unit is disposed within the installation space.

[0013] Preferably, in the above technical solution, the rear roller assemblies are symmetrically arranged at the rear of the housing on both sides of the bend, and each rear roller assembly is equipped with the lifting unit.

[0014] Preferably, in the above technical solution, the housing is connected to a front roller at the front of the suction port, and the front roller is always supported on the suction surface when the floor brush is pushed forward or pulled back.

[0015] More preferably, multiple front rollers are provided; the multiple front rollers are evenly distributed at the front of the housing, thereby improving the stability of the front support of the housing when the floor brush is pushed forward or pulled back.

[0016] Preferably, the bottom of the housing is provided with a sealing strip, which is located between the suction port and the rear roller assembly. When the floor brush is pushed forward, the sealing strip is in contact with the suction surface; when the floor brush is pulled back, the sealing strip is disengaged from the suction surface. The sealing strip improves the vacuum between the suction port and the suction surface, thereby improving the dust collection efficiency.

[0017] In a preferred embodiment of the above technical solution, a roller brush is provided inside the housing, and the bottom of the roller brush exposes the suction port.

[0018] Preferably, the bottom of the housing is provided with an auxiliary air inlet, which is connected to the suction port, and large dust particles can be sucked out through the auxiliary air inlet.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] This invention, by incorporating a lifting unit, allows the rear roller assembly to move up and down. When the floor brush is pushed forward, the rear of the housing is pressed down by the forward and downward thrust, causing the rear roller assembly to rise relative to the housing. This ensures a reduced distance between the suction port and the suction surface, improving the vacuum level of the suction chamber and enhancing the ability to vacuum fine dust. When the floor brush is pulled back, the rear of the housing is pulled up by the backward and upward pull, causing the rear roller assembly to descend relative to the housing and support itself on the suction surface. This increases the gap between the suction port and the suction surface, allowing the floor brush to maintain stable support on the ground while sucking up larger particles.

[0021] This invention can effectively absorb large dust particles during the forward and backward pushing and pulling process, while ensuring a certain dust suction capacity of the floor brush, thus guaranteeing the stability of the floor brush movement and improving the user experience. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Appendix Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0024] Appendix Figure 3 This is a side sectional view of the present invention;

[0025] Appendix Figure 4 , 5 This is a schematic diagram of the present invention when it is pushed forward;

[0026] Appendix Figure 6 This is a front sectional view of the present invention when it is pushed forward;

[0027] Appendix Figure 7 , 8 This is a schematic diagram of the present invention during pullback;

[0028] Appendix Figure 9 This is a front sectional view of the present invention during the pull-back process.

[0029] In the attached diagrams above:

[0030] 1. Housing; 10. Suction port; 100. Installation 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. Pipe bending;

[0032] 30. Fixing base; 31. Pressure plate; 32. Elastic component. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] like Figure 1 , 2 The floor brush shown includes a housing 1 and a curved tube 2. Specifically:

[0036] The bottom of the housing 1 has a suction port 10, which is used to suck up dust and particles from the suction surface (floor, carpet, etc.). The suction port 10 is located in the middle of the bottom of the housing 1 and extends along the width direction. Typically, the suction port 10 is a rectangular opening. A suction channel (not shown in the figure) is provided inside the housing 1, connected to the suction port 10, for conveying the dust and particles sucked up from the suction port 10. In this embodiment, an auxiliary air inlet 11 is also provided on the front side of the bottom of the housing 1. The auxiliary air inlet 11 is connected to the suction port 10 and can be used by the floor brush to suck up large dust particles when pushed forward. In the figure, multiple auxiliary air inlets 11 are provided, evenly distributed, and large dust particles can be sucked up through the auxiliary air inlets 11.

[0037] Inside the housing 1, there is also a roller brush 12. The bottom of the roller brush 12 is exposed at the suction port 10. During the suction process, the roller brush 12 can sweep up the dust and particles on the ground and remove them through the suction port 10 and the suction channel.

[0038] The housing 1 is connected to a front roller 13 at the front of the suction port 10. The front roller 13 supports the front of the housing 1. When the floor brush is pushed forward or pulled back, the front roller 13 always supports the suction surface. Multiple front rollers 13 are provided, and the multiple front rollers 13 are evenly distributed at the front of the housing 1 to improve the stability of the front support of the housing 1. In the figure, there are two front rollers 12, located on both sides of the front of the housing 1.

[0039] The housing 1 is connected to a rear roller assembly 14 at the rear of the suction port 10. The rear roller assembly 14 supports the rear of the housing 1 and is symmetrically arranged on both sides of the curved tube 2 at the rear of the housing 1, which can also improve the stability of the rear support of the housing 1. In this embodiment, the rear roller assembly 14 includes a wheel body 140 and a wheel axle 141, and the wheel body 140 is rotatably connected (sleeved) to the wheel axle 141.

[0040] The bend 2 is rotatably connected to the rear of the housing 1, allowing the suction port 10, the suction channel, and the interior of the bend 2 to communicate sequentially, thus conveying the suctioned dust and particles out. In this embodiment, the rotation axis A of the bend 2 is parallel to the rotation axis B of the rear roller assembly, and the rotation axis A of the bend 2 is located in front of the rotation axis B of the rear roller assembly, such as... Figure 3 As shown.

[0041] In this embodiment, the floor brush also includes a lifting unit. The rear roller assembly 14 is connected to the housing 1 via the lifting unit. When the floor brush is pulled back, the rear of the housing 1 is raised by force, causing the rear of the suction port 10 to rise. The lifting unit can drive the wheel 140 of the rear roller assembly 14 to support itself on the suction surface, creating a gap between the floor brush suction port 10 and the suction surface while maintaining the stability of the floor brush movement. The following is a specific implementation of the lifting unit:

[0042] The lifting unit includes a fixed base 30, a pressure 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 base 30 and the pressure plate 31 and can extend and retract between the fixed base 30 and the pressure plate 31. The axle 141 of the rear roller assembly 14 is mounted on the fixed base 30, such as by screwing it onto the fixed base 30 with threads.

[0043] Correspondingly, the housing 1 is provided with an installation space 100, and the lifting unit is located in the installation space 100. The installation space 100 has a predetermined height. After the elastic member 32 is pressed, the rear roller assembly 14 is raised within the height of the installation space 100, which is equivalent to retracting into the housing 1.

[0044] like Figure 4-6 As shown: When the ground brush is pushed forward, the wheel body 140 of the front roller 13 and the rear roller assembly 14 is supported on the suction surface. Under the action of the thrust, the rear part of the housing 1 is subjected to force and drops, the elastic component 32 is compressed, the rear roller assembly 14 is lifted, and the suction port 10 of the housing 1 is more closely attached to the suction surface, ensuring a sealed contact between the suction port 10 and the suction surface, and improving the ability to suck up fine dust.

[0045] like Figure 7-9As shown: When the ground brush is pulled back to the rear, the front roller 13 is still supported on the suction surface. Under the action of the pulling force, the rear part of the housing 1 is lifted by the force. After the pressure of the elastic component 32 is released, it drives the wheel body 140 of the rear roller assembly 14 to be supported on the suction surface, so that a larger gap is formed between the rear side of the suction port 10 and the suction surface, which can suck up large dust particles.

[0046] In addition, a sealing strip 15 is provided at the bottom of the housing 1. The sealing strip 15 can be selected from materials such 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 fits against 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 also disengages from the suction surface, without affecting the suction of large dust particles. The sealing strip 15 can better improve the vacuum between the suction port 10 and the suction surface when the floor brush is pushed forward, thereby improving the dust collection efficiency.

[0047] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

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 of claim 1 wherein: 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 drives the rear roller assembly (14) to support itself on the suction surface.

4. The floor brush of claim 3 wherein: 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 of claim 1 or 4, wherein: 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 of claim 1 wherein: 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 of claim 1 wherein: 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 of claim 1 wherein: 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 of claim 1 wherein: 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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