A floor scrubber large roller assembly with oblique motion function

Abstract

This invention discloses a large roller assembly for a floor scrubber with oblique motion function, comprising: a lower floor brush housing, a limiting groove on the rear side of the lower floor brush housing, an installation cavity inside the lower floor brush housing, an air suction duct and a roller brush assembly inside the installation cavity, a rotating component inside the limiting groove, a large roller connected to the rotating component, and a small roller on the front side of the bottom of the lower floor brush housing; and an upper floor brush housing, with a connecting ear and a limiting arc plate on the upper floor brush housing, the connecting ear abutting against the limiting groove, and the limiting arc plate located above the roller brush assembly. In use, the connecting shaft moves within the limiting notch as the large roller rolls, with a second bearing rolling on the rolling surface inside the limiting groove, thereby driving the first bearing to rotate on the threaded groove. The other end of the connecting shaft is connected to a retaining ring on the large roller. This structure reduces oblique slippage of the large roller, reduces resistance, and makes the floor brush operate more flexibly.

Description

Technical Field

[0001] This invention belongs to the field of floor scrubber technology, and particularly relates to a large roller assembly for a floor scrubber with oblique motion function. Background Technology

[0002] A floor scrubber is a cleaning machine suitable for cleaning hard floors while simultaneously drying wastewater. It boasts advantages such as environmental friendliness, energy efficiency, and high efficiency. Its basic principle is that the high-speed rotation of an electric motor drives the cleaning head or brush to rotate at high speed, generating strong friction and pressure to remove stains and dust from the floor.

[0003] Currently, in daily use, floor scrubbers not only move in a straight line forward and backward, but also in a diagonal stretching motion that shifts left and right. When the floor brush stretches diagonally, the traditional large rollers will slip, increasing the pushing and pulling resistance and affecting the user experience.

[0004] One of the Chinese patents, a drive clutch device for a floor scrubber (CN201610699199.0), includes a motor output shaft, which is fixedly connected to a chain shaft. The chain shaft is engaged with a sliding pawl, which is fixedly equipped with a clutch fork. The front end of the sliding pawl has a groove, and the sliding pawl is engaged with a roller support member via a tongue-and-groove joint. A linkage shaft is fixedly installed at the front end of the chain shaft, and the linkage shaft is fitted with two bearings. The bearings are fixedly installed inside the roller support member, and a spacer sleeve is provided between the bearings. The clutch fork is driven by a connecting rod, and the front end of the linkage shaft has a split cover, which is connected to the linkage shaft by a locking screw. Compared with the prior art, the present invention has the following advantages: by adjusting the clutch fork to drive the connection and separation between the sliding pawl and the roller, it ensures that when motor drive is required, the connection between the sliding pawl and the roller can be easily adjusted. Manual push adjustment of the sliding pawl and roller separation is not required, thus reducing the effort required for manual pushing.

[0005] A Chinese patent for a sweeping machine (CN201810621558.X) includes a body, a suction port assembly disposed at the bottom of the body, rollers mounted on the body, and a vacuum cleaning device disposed within the body. The suction port assembly includes a roller brush and a roller brush chamber supporting the roller brush. The roller brush chamber has a suction port communicating with the vacuum cleaning device.

[0006] A floating structure is provided between the roller brush chamber and the body. The roller brush chamber reciprocates relative to the body through the floating structure to adjust the position of the suction port relative to the body. The floating structure includes a linkage mechanism connected between the roller brush chamber and the body. The extension and contraction of the linkage mechanism supports the movement of the roller brush chamber relative to the body. The linkage mechanism includes a first link and a second link that are arranged in a cross configuration. The first link and the second link are pivotally connected at the middle of their intersection. The two ends of the first link and the second link are respectively pivotally connected to the body and the roller brush chamber and move within a preset range along the axis of the roller brush. The floating structure also includes an elastic element disposed between the roller brush chamber and the body. When the roller brush chamber approaches the body, the elastic element stores energy. The energy released by the elastic element causes the roller brush chamber to move away from the body. The roller brush chamber has a positioning hole. One end of the elastic element is received in the positioning hole, and the other end of the elastic element abuts against the pivot portion at the middle of the first link and the second link.

[0007] The suction port assembly also includes a limiting structure. Two limiting structures are provided, located at both ends of the roller brush. The limiting structure specifically includes a buckle provided in the roller brush chamber and a slot provided on the body that cooperates with the buckle. The movement of the buckle in the slot limits the floating range of the roller brush chamber.

[0008] The invention discloses a sweeper with a floating suction port, which allows the sweeper to flexibly adjust the height of the suction port to fit the ground in different ground environments, thereby improving the cleaning effect and enhancing the user experience.

[0009] Chinese Patent No. CN202011519230.0 discloses a cleaning device comprising a main body, a drive assembly, and a cleaning assembly. The drive assembly includes a drive device, at least one transmission component, and a movable bracket. The drive device is mounted on the main body and has a drive shaft extending toward the bottom of the main body. The movable bracket is movably connected to the bottom of the main body and is spaced apart from the drive shaft. The direction of movement of the movable bracket is generally perpendicular to the extension direction of the drive shaft. The at least one transmission component connects the movable bracket and the drive shaft. The drive shaft of the drive device drives the movable bracket to reciprocate back and forth via the at least one transmission component. The cleaning assembly is detachably connected to the movable bracket so that the cleaning assembly reciprocates back and forth with the movable bracket to repeatedly clean the surface to be cleaned.

[0010] The at least one transmission component includes a first transmission component and a second transmission component. The first transmission component is fixedly connected to the drive shaft. The second transmission component has a first connecting portion and a second connecting portion. The first connecting portion is rotatably connected to the first transmission component. The center distance between the first connecting portion and the drive shaft in the direction perpendicular to the drive shaft is a first distance. The second connecting portion is rotatably connected to the movable bracket. The center distance between the second connecting portion and the first connecting portion in the direction perpendicular to the drive shaft is a second distance. Both the first distance and the second distance are not zero, and the second distance is greater than or equal to the first distance. The first connecting portion of the second transmission component is rotatably connected to the first transmission component through a bearing, and the second connecting portion of the second transmission component is rotatably connected to the movable bracket through a bearing.

[0011] In this invention, the movable support moves in a direction generally perpendicular to the extension direction of the drive shaft. At least one transmission component is connected between the movable support and the drive shaft. The drive shaft of the drive device drives the movable support to reciprocate back and forth via at least one transmission component. The cleaning component is detachably connected to the movable support, allowing it to reciprocate with the movable support to clean the surface to be cleaned. The drive device can provide sufficient torque in the reciprocating direction of the movable support, effectively cleaning relatively heavy solid or liquid stains on the floor.

[0012] While the above patents can adjust the rollers, most of them are designed to make pushing easier, limit the floating range of the brush chamber, and improve cleaning performance. However, they do not address the technical problem of traditional large rollers slipping, increasing pushing and pulling resistance, and affecting the user experience. Summary of the Invention

[0013] The purpose of this invention is to address the problem that, in daily use, floor scrubbers not only move in a straight line forward and backward but also in a diagonal stretching motion to the left and right. When the floor brush stretches diagonally, the traditional large rollers slip, increasing pushing and pulling resistance and affecting the user experience. Therefore, this invention proposes a large roller assembly for floor scrubbers that features diagonal movement.

[0014] To achieve the above objectives, the present invention adopts the following technical solution: a large roller assembly for a floor scrubber with oblique motion function, comprising:

[0015] The floor brush lower shell has a limiting groove on its rear side, an installation cavity inside the floor brush lower shell, an air suction duct and a roller brush assembly inside the installation cavity, a rotating component inside the limiting groove, a large roller connected to the rotating component, and a small roller on the front side of the bottom of the floor brush lower shell.

[0016] The upper shell of the floor brush is provided with a connecting ear and a limiting arc plate. The connecting ear abuts against the limiting groove, and the limiting arc plate is located above the roller brush assembly.

[0017] As a further description of the above technical solution:

[0018] The rotating component includes a first bearing, a second bearing, and a connecting shaft. A threaded groove is provided in the limiting groove. The first bearing is connected to the threaded groove by a fixing screw. One end of the connecting shaft is connected to the first bearing. The second bearing is sleeved on the connecting shaft. The other end of the connecting shaft is connected to the large roller.

[0019] As a further description of the above technical solution:

[0020] The limiting groove is provided with a limiting notch on the outside, and a rolling surface is provided on the inside of the limiting notch, and the second bearing rolls on the rolling surface.

[0021] As a further description of the above technical solution:

[0022] The outer wall at the bottom of the limiting notch is arc-shaped.

[0023] As a further description of the above technical solution:

[0024] The lower shell of the floor brush is provided with a number of snap-fit ​​grooves, and the upper shell of the floor brush is provided with a number of snap-fit ​​posts, and the snap-fit ​​posts and the snap-fit ​​grooves are matched with each other.

[0025] As a further description of the above technical solution:

[0026] A rubber pad is provided on the rolling surface.

[0027] As a further description of the above technical solution:

[0028] The mounting cavity is provided with an abutment platform, and an airflow guiding device is provided on the abutment platform. The airflow guiding device is connected to the air intake duct.

[0029] As a further description of the above technical solution:

[0030] The height of the limiting notch is greater than the diameter of the connecting shaft.

[0031] As a further description of the above technical solution:

[0032] The roller brush assembly includes a drive motor, a first gear, a second gear, a rotating shaft, and a roller brush. The drive motor is connected to the first gear, and the first gear and the second gear mesh with each other.

[0033] The rotating shaft is connected to the second gear, and the two sides of the roller brush are connected to the rotating shaft.

[0034] As a further description of the above technical solution:

[0035] The peripheral side of the screw-in groove is connected to the limiting groove by a connecting rib.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0037] 1. In this invention, a rotating component is installed in the limiting groove on the rear side of the floor brush's lower housing. During use, as the large roller rolls on the ground, the connecting shaft moves within the limiting notch. This limiting movement not only ensures the stability of the connecting shaft but also makes the entire movement smoother. Simultaneously, the second bearing rolls freely on the rolling surface within the limiting groove, providing necessary support and lubrication for the entire floor brush's rotation. This rolling reduces friction and resistance, making the floor brush run more smoothly. Furthermore, due to the rolling of the second bearing, the first bearing can rotate more smoothly on the threaded groove. This rotation not only improves the cleaning efficiency of the floor brush but also makes the entire cleaning process easier. In addition, the other end of the connecting shaft is cleverly connected to the shaft retainer on the large roller. This connection method is not only robust and reliable but also effectively reduces the oblique slippage of the large roller.

[0038] 2. In this invention, the large roller moves obliquely, reducing the resistance of the floor brush's oblique movement and increasing the brush's flexibility. The limit angle of the large roller's oblique movement can be adjusted according to the design limit. At the same time, the large roller assembly has a simple structure, fixed by a shaft and a retaining ring, which is simple and reliable. In addition, the connecting shaft is connected to the lower shell of the floor brush through a bearing. The height of the limit notch is greater than the diameter of the connecting shaft, allowing for flexible rotation and reducing the pressure on the connecting shaft during rotation. The large roller assembly is made of stainless steel and other materials, which are resistant to friction and corrosion. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a detailed drawing of the large roller assembly of a floor scrubber with oblique motion capability.

[0041] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0042] Figure 3 This is a perspective view of a floor scrubber's large roller assembly with oblique motion function.

[0043] Figure 4 A cross-sectional view of a large roller assembly of a floor scrubber with oblique motion function. Figure 1 .

[0044] Figure 5 A cross-sectional view of a large roller assembly of a floor scrubber with oblique motion function. Figure 2 .

[0045] Legend:

[0046] 1-Lower shell of floor brush; 2-Limiting groove; 3-Mounting cavity; 4-Suction duct; 5-Roll brush assembly; 6-Rotating component; 61-First bearing; 62-Second bearing; 63-Connecting shaft; 7-Large roller; 8-Small roller; 9-Upper shell of floor brush; 10-Connecting ear; 11-Limiting arc plate; 12-Screw groove; 13-Fixing screw; 14-Limiting notch; 15-Rolling surface; 16-Snap-fit ​​groove; 17-Snap-fit ​​post; 18-Abutment platform; 19-Airflow guide device. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limiting the present invention.

[0052] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Please see Figure 1-5 This invention provides a technical solution: a large roller assembly for a floor scrubber with oblique motion function, comprising:

[0054] The floor brush lower shell 1 has a limiting groove 2 on its rear side, an installation cavity 3 inside the floor brush lower shell 1, an air suction duct 4 and a roller brush assembly 5 inside the installation cavity 3, a rotating component 6 inside the limiting groove 2, a large roller 7 connected to the rotating component 6, and a small roller 8 on the front side of the bottom of the floor brush lower shell 1.

[0055] The upper shell 9 of the floor brush is provided with a connecting ear 10 and a limiting arc plate 11. The connecting ear 10 abuts against the limiting groove 2, and the limiting arc plate 11 is located above the roller brush assembly 5.

[0056] The rotating component 6 includes a first bearing 61, a second bearing 62, and a connecting shaft 63. A threaded groove 12 is provided in the limiting groove 2. The first bearing 61 is connected to the threaded groove 12 by a fixing screw 13. One end of the connecting shaft 63 is connected to the first bearing 61, the second bearing 62 is sleeved on the connecting shaft 63, and the other end of the connecting shaft 63 is connected to the large roller 7.

[0057] When in use, the connecting shaft moves within the limiting notch as the large roller rolls. The second bearing rolls on the rolling surface inside the limiting groove, thereby driving the first bearing to rotate on the screw groove. The other end of the connecting shaft is connected to the shaft retainer on the large roller. This structure reduces the oblique slippage of the large roller, reduces resistance, and makes the floor brush run more flexibly.

[0058] The limiting groove 2 has a limiting notch 14 on its outer side, and a rolling surface 15 is provided on the inner side of the limiting notch 14, on which the second bearing 62 rolls. The outer wall of the bottom of the limiting notch 14 is arc-shaped, thus limiting the extreme angle of the oblique movement of the large roller.

[0059] The lower casing 1 of the floor brush is provided with a plurality of snap-fit ​​grooves 16, and the upper casing 9 of the floor brush is provided with a plurality of snap-fit ​​posts 17. The snap-fit ​​posts 17 and the snap-fit ​​grooves 16 are matched with each other to ensure a stable connection between the upper casing and the lower casing of the floor brush.

[0060] A rubber pad is provided on the rolling surface 15. This ensures that the large roller is quiet and has good shock resistance during rolling.

[0061] The mounting cavity 3 is provided with an abutment platform 18, and an airflow guiding device 19 is provided on the abutment platform 18. The airflow guiding device 19 is connected to the air intake duct 4.

[0062] When the floor scrubber starts running, the floor brush rotates and contacts the ground, creating a suction effect. This airflow guide device is a key component connecting the floor brush and the air intake duct. It ensures that during the cleaning process, dust, dirt, and other particles picked up or generated by the floor brush can be effectively sucked in and guided into the air intake duct.

[0063] The height of the limiting notch 14 is greater than the diameter of the connecting shaft 63. This ensures that the large roller rotates flexibly and reduces the pressure on the connecting shaft during rotation.

[0064] The roller brush assembly 5 includes a drive motor, a first gear, a second gear, a rotating shaft, and a roller brush. The drive motor is connected to the first gear, and the first gear and the second gear mesh with each other. The rotating shaft is connected to the second gear, and both sides of the roller brush are connected to the rotating shaft.

[0065] The threaded groove 12 is connected to the limiting groove 2 by connecting ribs on its periphery.

[0066] Working Principle: A rotating component is installed in the limiting groove on the rear side of the floor brush's lower housing. During use, as the large roller rolls on the ground, the connecting shaft moves within the limiting notch. This limiting movement not only ensures the stability of the connecting shaft but also makes the entire movement smoother. Simultaneously, the second bearing rolls freely on the rolling surface within the limiting groove, providing necessary support and lubrication for the entire floor brush's rotation. This rolling reduces friction and resistance, making the floor brush operate more smoothly. Furthermore, due to the rolling of the second bearing, the first bearing can rotate more smoothly on the threaded groove. This rotation not only improves the cleaning efficiency of the floor brush but also makes the entire cleaning process easier. In addition, the other end of the connecting shaft is cleverly connected to the shaft retainer on the large roller. This connection method is not only secure and reliable but also effectively reduces the oblique slippage of the large roller.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A large roller assembly of a scrubber with a diagonal movement function, characterized in that, include: The floor brush lower shell has a limiting groove on its rear side, an installation cavity inside the floor brush lower shell, an air suction duct and a roller brush assembly inside the installation cavity, a rotating component inside the limiting groove, a large roller connected to the rotating component, and a small roller on the front side of the bottom of the floor brush lower shell. The floor brush has an upper shell with connecting ears and a limiting arc plate. The connecting ears abut against the limiting groove, and the limiting arc plate is located above the roller brush assembly. The rotating component includes a first bearing, a second bearing, and a connecting shaft. The limiting groove has a threaded groove, and the first bearing is connected to the threaded groove by a fixing screw. One end of the connecting shaft is connected to the first bearing, the second bearing is sleeved on the connecting shaft, and the other end of the connecting shaft is connected to the large roller. The limiting groove has a limiting notch on its outer side, and a rolling surface is provided on the inner side of the limiting notch. The second bearing rolls on the rolling surface. The outer wall of the bottom of the limiting notch is arc-shaped.

2. The large roller assembly with oblique motion function of the scrubber according to claim 1, characterized in that, The lower shell of the floor brush is provided with a number of snap-fit ​​grooves, and the upper shell of the floor brush is provided with a number of snap-fit ​​posts, and the snap-fit ​​posts and the snap-fit ​​grooves are matched with each other.

3. The large roller assembly with diagonal movement function of the scrubber-dryer according to claim 1, characterized in that A rubber pad is provided on the rolling surface.

4. The floor scrubber large roller assembly with oblique motion function according to claim 1, characterized in that, The mounting cavity is provided with an abutment platform, and an airflow guiding device is provided on the abutment platform. The airflow guiding device is connected to the air intake duct.

5. The floor scrubber large roller assembly with oblique motion function according to claim 1, characterized in that, The height of the limiting notch is greater than the diameter of the connecting shaft.

6. The floor scrubber large roller assembly with oblique motion function according to claim 1, characterized in that, The roller brush assembly includes a drive motor, a first gear, a second gear, a rotating shaft, and a roller brush. The drive motor is connected to the first gear, and the first gear and the second gear mesh with each other. The rotating shaft is connected to the second gear, and both sides of the roller brush are connected to the rotating shaft.

7. The floor scrubber large roller assembly with oblique motion function according to claim 1, characterized in that, The peripheral side of the screw-in groove is connected to the limiting groove by a connecting rib.

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