Pneumatic floor brush

Abstract

The utility model provides a pneumatic floor brush, and belongs to the technical field of pneumatic floor brushes of dust collectors. The pneumatic floor brush comprises a shell assembly, a dust removal device and a dust removal device, wherein the shell assembly is provided with a first channel, a first containing cavity and a second containing cavity with a dust removal opening; the sweeping mechanism is arranged in the second containing cavity, the sweeping mechanism comprises a rolling brush rotationally arranged in the containing cavity, and the rolling brush is partially exposed out of the dust removal opening; the driving mechanism comprises a fixed fan blade structure, a wind wheel and a transmission shaft, the fixed fan blade structure is fixedly arranged on the side wall of the first containing cavity and located at one end of the rolling brush in the axial direction, the wind wheel is arranged in the first containing cavity, the wind wheel and the fixed fan blade structure are coaxially arranged at intervals, and the wind wheel, the transmission shaft and the rolling brush are arranged to rotate synchronously; the rotating direction of the fan blades of the fixed fan blade structure is opposite to that of the fan blades of the wind wheel so that the wind wheel can be pushed to rotate in the first direction when air enters from the outside, and the first direction is the same as the working rotating direction of the rolling brush. The pneumatic floor brush is high in cleaning efficiency, simple in structure and low in cost.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic floor brushes for vacuum cleaners, and in particular to a pneumatic floor brush. Background Art

[0002] In terms of power source costs, electric floor brushes rely on motors as their power source, resulting in higher manufacturing costs for motors and related components. Pneumatic floor brushes, on the other hand, utilize wind power as their power source, eliminating the need for motors and related components, thus reducing manufacturing costs. The production process for electric floor brushes is complex, involving multiple steps such as motors and circuit boards. This places high demands on production equipment and personnel, increasing production costs. Pneumatic floor brushes, on the other hand, have a relatively simple structure and require less technical expertise, thus reducing production costs. Traditional floor brushes primarily rely on manual sweeping and physical friction to clean floors, resulting in limited cleaning effectiveness, especially in hard-to-reach areas such as crevices and deep carpets. Pneumatic floor brushes utilize wind power to drive the brush head at high speeds, combined with airflow suction, to achieve a deeper, more thorough cleaning, including in areas like carpet fibers and floor crevices. Furthermore, they are not restricted by power supply and can be used in off-grid environments, making them particularly suitable for outdoor cleaning and large-scale cleaning. They offer portability, environmental friendliness, and energy efficiency far exceeding electric floor brushes. Electric floor brushes utilize a motor to drive the brush head and the vacuum system, generally providing superior cleaning results, but this may be limited by motor performance and the efficiency of the vacuum system. The pneumatic floor brush uses wind power to drive the brush head to rotate at high speed, and combined with the airflow adsorption function, it can clean the floor more deeply and is especially suitable for cleaning soft materials such as carpets.

[0003] In early pneumatic floor brushes, the rotation of the rolling brush usually depends on the wind wheel at the front end of the brush connected by a belt. This structure is complex and takes up space in the brush box, making the floor brush relatively bulky and expensive. Utility Model Content

[0004] One object of the first aspect of the present utility model is to provide a pneumatic floor brush with high cleaning efficiency, simple structure and low cost.

[0005] Another purpose of the utility model is to prevent the interior of the floor brush from becoming dirty during use.

[0006] A further object of the present invention is to prevent the drive mechanism from being underpowered.

[0007] Another purpose of the present invention is to facilitate the maintenance of the roller brush.

[0008] The embodiment of the present utility model provides a pneumatic floor brush, comprising:

[0009] The housing assembly is provided with a first channel, a first cavity and a second cavity having a dust removal port, wherein one end of the first channel is used to connect to the vacuum cleaner, and the other end is respectively connected to the first cavity and the second cavity;

[0010] a cleaning mechanism disposed in the second cavity, the cleaning mechanism comprising a roller brush rotatably disposed in the cavity, the roller brush being partially exposed from the dust removal port;

[0011] The driving mechanism includes a fixed fan blade structure, a wind wheel and a transmission shaft. The axial directions of the fixed fan blade structure, the wind wheel and the transmission shaft coincide with the axial direction of the roller brush. The fixed fan blade structure is fixedly arranged at the side wall of the first cavity and is located at one end of the axial direction of the roller brush. The wind wheel is arranged in the first cavity and is coaxially spaced with the fixed fan blade structure. The wind wheel, the transmission shaft and the roller brush are arranged to rotate synchronously. The blade rotation direction of the fixed fan blade structure is opposite to that of the wind wheel, so as to push the wind wheel to rotate in a first direction when external wind enters. The first direction is the same as the working rotation direction of the roller brush.

[0012] Furthermore, the dust removal port is located at the bottom of the shell assembly, and the first cavity is connected to the first channel through an air induction channel arranged around the dust removal port.

[0013] Furthermore, the first channel is also connected to the second cavity through the air induction channel.

[0014] Furthermore, the air induction channel includes a concave cavity provided at the shell assembly and a sealing sheet covering the concave cavity.

[0015] Furthermore, the first channel is located in the middle of the shell assembly in the length direction, and the air induction channel is "L"-shaped.

[0016] Furthermore, the dust removal port includes a main air inlet and a plurality of sub-air inlets located at the front end of the main air inlet and connected to the main air inlet.

[0017] Furthermore, an annular area matching the shape of the wind wheel is formed in the first cavity.

[0018] Furthermore, the roller brush includes a bristle strip, and the rotation direction of the bristle strip is consistent with the rotation direction of the fan blades of the wind wheel.

[0019] Furthermore, the cleaning mechanism further comprises:

[0020] a side fixing plate, detachably provided on a side of the housing assembly opposite to the fixed fan blade structure;

[0021] The first end cover and the second end cover are respectively arranged at the two axial ends of the roller brush, and both form an anti-rotation connection with the roller brush. The first end cover forms a rotation connection with the side fixing plate, and the second end cover forms an anti-rotation connection with the transmission shaft.

[0022] Furthermore, the second end cover is provided with a snap-fitting hole, and one of the snap-fitting hole and the transmission shaft is provided with a protrusion, and the other is provided with a groove that is snap-fitted with the protrusion.

[0023] According to the first aspect of the present invention, the power generated by the air pressure causes the roller brush to rotate at high speed, which can generate a strong airflow. This airflow helps to completely blow away or suck away the deep stains and fine dust on the ground, thereby achieving deeper cleaning.

[0024] Furthermore, this driving mechanism does not require the installation of complex mechanisms such as motors and transmission devices, and its own structure is relatively simple, thus reducing weight and cost. Therefore, it is lighter to use, can effectively reduce human labor intensity, and effectively reduces noise compared to motor drive, helping to provide a more comfortable cleaning environment.

[0025] Furthermore, the dust removal port and the air inlet of the driving mechanism are arranged separately, that is, the dust removal port is arranged at the bottom of the shell assembly, and the fixed fan blade structure is arranged at the side wall of the first cavity. The inlets of dust and driving airflow are arranged separately, which can prevent dust from entering the first cavity and most of the air inlet channels, thereby preventing the inside of the pneumatic brush from being dirty.

[0026] Furthermore, the first channel is connected to the second cavity through the air induction channel, which can simplify the internal channel structure, and the external airflow enters the first channel through the air induction channel and the second cavity at the same time, so that the wind force is optimized.

[0027] Furthermore, the sealing arrangement of the air duct can avoid air leakage when introducing external airflow into the driving mechanism, thereby preventing insufficient power of the driving mechanism and ensuring efficient and continuous rotation of the roller brush.

[0028] Furthermore, the rotation direction of the bristles of the roller brush is set to be consistent with the rotation direction of the fan blades of the wind wheel. When the air flow blows from the side of the wind wheel to the roller brush, the air flow will cause the roller brush to rotate counterclockwise, that is, to rotate in the same direction as the transmission shaft. Therefore, under the premise that the side air intake causes the driving mechanism to drive the roller brush to rotate, this setting method will also directly have an additive rotational force on the roller brush, further increasing the rotation speed of the roller brush.

[0029] Furthermore, the first end cover and the second end cover at both ends of the roller brush form a detachable connection with the side fixing plate and the drive shaft respectively, wherein the side fixing plate also forms a detachable connection with the shell assembly. Therefore, when the roller brush needs to be cleaned or replaced, the side fixing plate can be removed, which reduces the complexity of roller brush maintenance and facilitates users to perform daily cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a pneumatic floor brush according to an embodiment of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram of the internal structure of the pneumatic floor brush;

[0032] Figure 3 for Figure 1 Schematic diagram of the assembly of the cleaning mechanism and driving mechanism of the pneumatic floor brush;

[0033] Figure 4 for Figure 1 Schematic diagram of the cleaning mechanism and driving mechanism of the pneumatic floor brush;

[0034] Figure 5 This is an exploded schematic diagram of a housing assembly of a pneumatic floor brush according to one embodiment of the present invention;

[0035] Figure 6 This is a structural diagram of a connection mechanism of a pneumatic floor brush according to another embodiment of the present invention;

[0036] Figure 7 This is a schematic structural diagram of a pneumatic floor brush according to another embodiment of the present invention;

[0037] Figure 8 for Figure 7 A schematic diagram of the structure of the connection mechanism of the pneumatic floor brush;

[0038] Reference numerals:

[0039] Pneumatic floor brush 100, housing assembly 10, first channel 101, first cavity 102, second cavity 103, air inlet 104, sub-air inlet 105, bottom plate 11, concave cavity 111, first opening 112, first through hole 113, first cavity 114, bottom cover 12, sealing sheet 13, side cover 14, front cover 15, upper cover 16, cleaning mechanism 20, roller brush 21, wool strip 211, side fixing plate 2 2. First end cover 23, second end cover 24, snap-in hole 241, drive mechanism 30, fixed fan blade structure 31, wind wheel 32, transmission shaft 33, second bearing 34, connecting mechanism 40, upper bend 41, middle bend 42, lower bend 43, hose 44, hose connector 45, button 46, upper shaft cover 401, shaft connector 402, lower shaft cover 403, guide mechanism 50, front roller 51, rear wheel 52. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0041] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0042] In addition, numerous specific details are provided in the following detailed description to better illustrate the present invention. Those skilled in the art will appreciate that the present invention can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main points of the present disclosure.

[0043] It should be understood that the term "and / or" as used herein simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " as used herein indicates that the related objects are in an "or" relationship.

[0044] In the embodiments of the present invention, the term "multiple" refers to two or more. The terms "first," "second," and so on, appearing in the embodiments of the present invention are for illustrative purposes only and are intended to distinguish the objects being described. They are not in any particular order and do not represent a specific limit on the number of objects in the embodiments of the present invention. They do not constitute any limitation on the embodiments of the present invention.

[0045] Figure 1 Schematic diagram of the structure of a pneumatic floor brush 100 according to an embodiment of the present invention. Figure 2 for Figure 1 Schematic diagram of the internal structure of the pneumatic floor brush 100. Figure 3 for Figure 1 Schematic diagram of the assembly of the cleaning mechanism 20 and the driving mechanism 30 of the pneumatic floor brush 100. Figure 4 for Figure 1 Schematic diagram of the cleaning mechanism 20 and the driving mechanism 30 of the pneumatic floor brush 100. Figure 1 and 2 As shown, the pneumatic floor brush 100 includes a housing assembly 10, a cleaning mechanism 20 and a driving mechanism 30. Figure 2 As shown, the housing assembly 10 is provided with a first channel 101, a first cavity 102, and a second cavity 103 with a dust removal port. One end of the first channel 101 is used to connect to the vacuum cleaner, and the other end is connected to the first cavity 102 and the second cavity 103 respectively. The cleaning mechanism 20 is provided in the second cavity 103 and includes a roller brush 21 rotatably provided in the cavity, and the roller brush 21 is partially exposed at the dust removal port. Figure 3 and 4As shown, the driving mechanism 30 includes a fixed blade structure 31, a wind wheel 32 and a transmission shaft 33. The axial directions of the fixed blade structure 31, the wind wheel 32 and the transmission shaft 33 all coincide with the axial direction of the roller brush 21, that is, the fixed blade structure 31 and the wind wheel 32 are arranged vertically so that the external airflow enters the interior of the pneumatic floor brush 100 from the side. The fixed blade structure 31 is fixedly arranged at the side wall of the first cavity 102 and is located at one end in the axial direction of the roller brush 21. The fixed blade structure 31 here includes a plurality of fixed blades, which can be a structure assembled to the side wall of the first cavity 102 or a structure directly formed at the side wall of the first cavity 102 by processing. The wind wheel 32 is arranged in the first cavity 102 and is coaxially spaced apart from the fixed blade structure 31. Here, the first cavity 102 can be arranged on the left or right side of the second cavity 103, so that the driving mechanism 30 is arranged at the left or right end of the roller brush 21. The impeller 32, the transmission shaft 33, and the roller brush 21 are configured to rotate synchronously, for example, by means of a keyway, a snap-fit ​​connection, or other commonly used anti-rotation connection method. The fixed blade structure 31 has a blade rotation direction opposite to that of the impeller 32, so that when external air enters, the impeller 32 is driven to rotate in a first direction. The first direction is the same as the working rotation direction of the roller brush 21, which is the direction of rotation of the roller brush 21 during normal vacuuming operations. This rotation direction ensures that the roller brush 21 draws external garbage into the interior of the pneumatic floor brush 100.

[0046] by Figure 4 Taking the embodiment in as an example, from the right side perspective (i.e., from the side of the fixed blade structure 31 away from the wind wheel 32, the blade rotation direction mentioned below is all observed from this perspective), the working rotation direction of the roller brush 21 is counterclockwise, which requires the transmission shaft 33 and the wind wheel 32 to rotate counterclockwise. Accordingly, the blade rotation direction of the wind wheel 32 is right-handed, while the blade rotation direction of the fixed blade structure 31 is left-handed. During operation, the pneumatic floor brush 100 is connected to the vacuum cleaner, and the suction force of the vacuum cleaner enters the first cavity 102 and the second cavity 103 respectively through the first channel 101, so that the external airflow blows from the fixed blade structure 31 to the wind wheel 32. The airflow passing through the fixed blade structure 31 acts on the blades of the wind wheel 32, pushing the wind wheel 32 to rotate counterclockwise, thereby driving the transmission shaft 33 and the roller brush 21 to rotate counterclockwise.

[0047] In this embodiment, the power generated by air pressure causes the roller brush 21 to rotate at high speed, generating a powerful airflow that helps to completely blow away or absorb deep-seated dirt and fine dust on the floor, thereby achieving a deeper cleaning. The pneumatic floor brush 100 can provide excellent cleaning results for a variety of floor materials, such as hard floors and carpets.

[0048] Furthermore, this driving mechanism 30 does not require the installation of complex mechanisms such as motors and transmission devices, and its own structure is relatively simple, thereby reducing weight and cost. Therefore, it is relatively light to use, can effectively reduce human labor intensity, and effectively reduces noise compared to motor drive, helping to provide a more comfortable cleaning environment.

[0049] In a further embodiment, Figure 2 As shown, the dust removal port is located at the bottom of the housing assembly 10, and the first cavity 102 is connected to the first channel 101 through the air induction channel 104 arranged around the dust removal port. For example, generally, the first channel 101 is located in the middle of the length direction of the housing assembly 10, the dust removal port is rectangular, and the first cavity 102 is arranged on the side. In this case, the air induction channel 104 is arranged Figure 2 As shown in the "L" shape, a partial area of ​​the air induced channel 104 in this embodiment is also connected to the second cavity 103. In one embodiment, the air induced channel 104 is sealed, for example, a sealing area is formed by covering the concave cavity 111 at the shell assembly 10 with a sealing sheet 13, and the sealing sheet 13 can be an EVA sealing sheet 13. The dust removal port includes a main air inlet and a plurality of sub-air inlets 104 located at the front end of the main air inlet and connected to the main air inlet. An annular area matching the shape of the wind wheel 32 is formed in the first cavity 102, that is, a circular hole area with a diameter slightly larger than the diameter of the outer circumference of the wind wheel 32, so that when the airflow enters the gap between the annular area and the wind wheel 32, it can drive the wind wheel 32 to rotate at high speed.

[0050] When working, the vacuum cleaner provides suction through the first channel 101 and the air induced channel 104, so that the external airflow flows into the first cavity 102 from the fixed fan blade structure 31. At the same time, the suction force of the vacuum cleaner causes the airflow to carry dust from the dust removal port into the second cavity 103, the air induced channel 104 and the first channel 101 and into the interior of the vacuum cleaner.

[0051] In this embodiment, the dust removal port and the air inlet of the driving mechanism 30 are set separately, that is, the dust removal port is set at the bottom of the shell assembly 10, and the fixed fan blade structure 31 is set at the side wall of the first cavity 102. The inlets of dust and driving airflow are set separately, which can prevent dust from entering the first cavity 102 and most of the air inlet channels 104, thereby preventing the inside of the pneumatic floor brush 100 from being dirty.

[0052] Furthermore, here the first channel 101 is connected with the second cavity 102 through the air induction channel 104, which can simplify the internal channel structure, and the external airflow enters the first channel 101 through the air induction channel 104 and the second cavity 102 at the same time, so that the wind force is optimized.

[0053] Furthermore, the sealing arrangement of the air duct 104 can avoid air leakage when introducing external airflow into the driving mechanism 30 , thereby preventing the driving mechanism 30 from being underpowered and ensuring efficient and continuous rotation of the roller brush 21 .

[0054] In a further embodiment, the roller brush 21 includes a bristle strip 211, and the rotation direction of the bristle strip 211 is consistent with the rotation direction of the blades of the wind wheel 32. Figure 3 and 4 In the embodiment shown, the rotation direction of the bristle strips 211 and the rotation direction of the blades of the wind wheel 32 are both right-handed. The bristle strips 211 of the roller brush 21 can be evenly arranged in the grooves of its main shaft by insertion.

[0055] In this embodiment, the rotation direction of the bristles 211 of the roller brush 21 is set to be consistent with the rotation direction of the blades of the wind wheel 32. When the air flow blows from the side of the wind wheel 32 to the roller brush 21, the air flow will cause the roller brush 21 to rotate counterclockwise, that is, to rotate in the same direction as the transmission shaft 33. Therefore, under the premise that the side air intake causes the driving mechanism 30 to drive the roller brush 21 to rotate, this setting method will also directly exert an additive rotational force on the roller brush 21, further increasing the rotation speed of the roller brush 21.

[0056] Furthermore, if Figure 3 As shown, the cleaning mechanism 20 further includes a side fixing plate 22, a first end cover 23 and a second end cover 24. The side fixing plate 22 is detachably arranged on the side of the housing assembly 10 opposite to the fixed fan blade structure 31 (see Figure 2 ), for example, the side fixing plate 22 is set in the form of a knob, which is fixedly connected or separated with the side wall of the housing assembly 10 by rotation, and a horizontal portion is set on the outside of the side fixing plate 22 for easy operation. The first end cover 23 and the second end cover 24 are respectively set at the two ends of the axial direction of the roller brush 21, and both form an anti-rotation connection with the roller brush 21. The second end cover 24 forms an anti-rotation connection with the transmission shaft 33. The anti-rotation connection can be, for example, a clamping connection, an interference connection, etc. The first end cover 23 forms a rotational connection with the side fixing plate 22, such as Figure 4 As shown, the inner side of the side fixing plate 22 is provided with a mounting cavity and a central axis. A through-hole is provided in the middle of the first end cap 23, through which the central axis passes and enters the opening on the side of the roller. A first bearing is provided between the first end cap 23 and the mounting cavity. Specifically, the first bearing can be disposed between the central axis of the side fixing plate 22 and the through-hole of the first end cap 23. The second end cap 24 is provided with a snap-fit ​​hole 241. One of the snap-fit ​​hole 241 and the drive shaft 33 is provided with a protrusion, and the other is provided with a groove that forms a snap-fit ​​with the protrusion, thereby forming a detachable snap-fit ​​connection between the second end cap 24 and the drive shaft 33. The drive shaft 33 is supported within the first cavity 102 by the second bearing 34.

[0057] In this embodiment, the first end cover 23 and the second end cover 24 at both ends of the roller brush 21 are respectively detachably connected to the side fixing plate 22 and the transmission shaft 33, wherein the side fixing plate 22 is also detachably connected to the shell assembly 10. Therefore, when the roller brush 21 needs to be cleaned or replaced, the side fixing plate 22 can be removed. This reduces the complexity of maintaining the roller brush 21 and is also convenient for users to perform daily cleaning and maintenance.

[0058] Figure 5 FIG. 1 is an exploded schematic diagram of the housing assembly 10 of the pneumatic floor brush 100 according to an embodiment of the present invention. Figure 5 As shown, in one embodiment, the housing assembly 10 includes a base plate 11, a bottom cover 12, a sealing plate 13, a side cover plate 14, a front cover 15, and an upper cover 16. The upper cover 16, the front cover 15, the base plate 11, the sealing plate 13, and the base cover 12 are sequentially matched in the upper and lower parts, and the side cover plate 14 is arranged on the left or right side of the base plate 11, together forming the housing assembly 10. The base plate 11 has a first opening 112 extending vertically therethrough, and a first through hole 113 and a first cavity 114 are respectively provided on the left and right sides. The first through hole 113 is provided along the axial direction of the roller brush 21 and is used to form a snap connection with the side fixing plate 22. The first cavity 114 is provided with a transmission shaft 33, a second bearing 34, and a wind wheel 32. The side cover plate 14 and the first cavity 114 together form a first cavity 102, and the inner side wall of the first cavity 114 forms an annular area. The front cover 15 can be made of a transparent material, with both ends of its lower part overlapped on the base plate 11, and then the upper cover 16 is pressed onto the base plate 11, and the front cover 15 is fixed at the same time, and the first through hole 113 is closed by the front cover 15 to form the second cavity 103. An "L"-shaped cavity 111 is formed at the bottom of the base plate 11, and the bottom cover of the cavity 111 is provided with a sealing sheet 13 to form an air duct 104. Then the bottom cover 12 is fixed to the bottom of the base plate 11 covered with the sealing sheet 13. The bottom cover 12 is set to a shape that does not block the second cavity 103, so as to form a dust removal port at the bottom of the shell assembly 10. Here, the rear side of the base plate 11 is also provided with a connecting portion for forming the first channel 101, and the connecting portion is used to connect different types of connecting mechanisms 40.

[0059] Figure 6 FIG. 1 is a schematic structural diagram of a pneumatic floor brush 100 according to another embodiment of the present invention. Figure 6 In the embodiment shown, the connecting mechanism 40 is a shaft connecting mechanism 40, which includes a shaft upper cover 40116, a shaft joint 402 and a shaft lower cover 403. The shaft upper cover 40116 and the shaft lower cover 403 are respectively assembled on the left and right sides of the shaft joint 402. A snap connection is formed between the shaft upper cover 40116 and the shaft lower cover 403. The shaft connecting mechanism 40 is assembled as a whole to the connecting part of the shell assembly 10. The shaft joint 402 is used to connect the pipeline of the vacuum cleaner, and a first channel 101 is formed inside the shaft joint 402.

[0060] Figure 7 Schematic diagram of the structure of a pneumatic floor brush 100 according to another embodiment of the present invention. Figure 8 for Figure 7 Schematic diagram of the structure of the connecting mechanism 40 of the pneumatic floor brush 100. Figure 7 and 8 As shown, in another embodiment, the connection mechanism 40 is a curved pipe connection mechanism 40, comprising a curved pipe, a hose 44, and a hose connector 45. The curved pipe comprises an upper curved pipe 41, a middle curved pipe 42, and a lower curved pipe 43. The hose connector 45 is connected to the lower end of the hose 44 and has a passage formed therein that communicates with the hose 44. The hose 44 is disposed within the curved pipe, and the upper end of the hose 44 communicates with the passage within the curved pipe. The passage of the hose connector 45, the hose 44, and the passage within the curved pipe collectively form a first passage 101. The lower curved pipe 43 is pivotally connected to the connection portion, the middle curved pipe 42 is pivotally connected to the lower curved pipe 43, and the upper curved pipe 41 is fixedly engaged with the middle curved pipe 42. The upper curved pipe 41 is used to connect to the vacuum cleaner pipeline. A control button 46 is provided at the connection between the upper curved pipe 41 and the middle curved pipe 42 for controlling whether the curved pipe is locked or unlocked with the vacuum cleaner pipeline when the button 46 is operated. Here, the lower bend 43 can rotate relative to the connecting part around a first rotation axis direction, the first rotation axis direction is parallel to the axial direction of the floor brush, and the middle bend 42 can rotate relative to the lower bend 43 around a second rotation axis direction, the second rotation axis direction is a horizontal direction perpendicular to the first rotation axis direction.

[0061] Furthermore, a guide mechanism 50 for adjusting the travel and cleaning direction is provided at the bottom of the shell assembly 10. The guide mechanism 50 includes two front rollers 51 located on the front side of the bottom of the shell assembly 10 and two rear wheels 52 located on the rear side. The rear wheels 52 are arranged on both sides of the connecting part and are larger in size than the front rollers 51.

[0062] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A pneumatic floor brush, characterized in that: include: The housing assembly is provided with a first channel, a first cavity and a second cavity having a dust removal port, wherein one end of the first channel is used to connect to the vacuum cleaner, and the other end is respectively connected to the first cavity and the second cavity; a cleaning mechanism disposed in the second cavity, the cleaning mechanism comprising a roller brush rotatably disposed in the cavity, the roller brush being partially exposed from the dust removal port; The driving mechanism includes a fixed fan blade structure, a wind wheel and a transmission shaft. The axial directions of the fixed fan blade structure, the wind wheel and the transmission shaft coincide with the axial direction of the roller brush. The fixed fan blade structure is fixedly arranged at the side wall of the first cavity and is located at one end of the axial direction of the roller brush. The wind wheel is arranged in the first cavity and is coaxially spaced with the fixed fan blade structure. The wind wheel, the transmission shaft and the roller brush are arranged to rotate synchronously. The blade rotation direction of the fixed fan blade structure is opposite to that of the wind wheel, so as to push the wind wheel to rotate in a first direction when external wind enters. The first direction is the same as the working rotation direction of the roller brush.

2. The pneumatic floor brush according to claim 1, characterized in that: The dust removal port is located at the bottom of the shell assembly, and the first cavity is communicated with the first channel via an air induction channel arranged around the dust removal port.

3. The pneumatic floor brush according to claim 2, characterized in that: The first channel is also connected to the second cavity through the air induction channel.

4. The pneumatic floor brush according to claim 3, characterized in that: The air induction channel includes a concave cavity provided at the shell assembly and a sealing sheet covering the concave cavity.

5. The pneumatic floor brush according to claim 3, characterized in that: The first channel is located in the middle of the shell assembly in the length direction, and the air induction channel is "L"-shaped.

6. The pneumatic floor brush according to claim 1, characterized in that: The dust removal port includes a main air inlet and a plurality of sub-air inlets located at the front end of the main air inlet and connected to the main air inlet.

7. The pneumatic floor brush according to claim 1, characterized in that: An annular area matching the shape of the wind wheel is formed in the first cavity.

8. The pneumatic floor brush according to claim 1, characterized in that: The rolling brush includes a bristle strip, and the rotation direction of the bristle strip is consistent with the rotation direction of the fan blade of the wind wheel.

9. The pneumatic floor brush according to any one of claims 1 to 8, characterized in that: The cleaning mechanism also includes: a side fixing plate, detachably provided on a side of the housing assembly opposite to the fixed fan blade structure; The first end cover and the second end cover are respectively arranged at the two axial ends of the roller brush, and both form an anti-rotation connection with the roller brush. The first end cover forms a rotation connection with the side fixing plate, and the second end cover forms an anti-rotation connection with the transmission shaft.

10. The pneumatic floor brush according to claim 9, characterized in that: The second end cover is provided with a snap-fitting hole, and one of the snap-fitting hole and the transmission shaft is provided with a protrusion, and the other is provided with a groove that forms a snap fit with the protrusion.

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