Double-acting cleaning brush

Abstract

The double-acting cleaning brush comprises a machine shell, a motor and a speed reducer, the motor and the speed reducer are fixedly arranged in the machine shell and are coaxially connected, one end of the machine shell is rotationally provided with an outer brush head and an inner brush head which are located on the same rotating plane, and the outer brush head and the speed reducer are eccentrically arranged and are in transmission connection with a first gear assembly. The inner brush head and the outer brush head are coaxially arranged, a second gear assembly is in transmission connection between the inner brush head and the first gear assembly, and the motor drives the inner brush head to rotate reversely through the second gear assembly while driving the outer brush head to rotate forwards through the first gear assembly. According to the utility model, the outer brush head and the inner brush head which are coaxial and are positioned on the same rotating plane are arranged, and the transmission connection with the output end of the speed reducer which is eccentrically arranged is realized through the two groups of gear assemblies, so that when the motor rotates, the two brush heads can simultaneously rotate in positive and negative directions, and the cleaning effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a dual-action cleaning brush. Background Technology

[0002] Cleaning brushes are essential household items. Currently available cleaning brushes are either electric or manual. With the rapid development of power tools, electric cleaning brushes are gradually replacing manual ones. Existing electric cleaning brushes generally have only one brush head, i.e., single-action cleaning brushes. While these electric cleaning brushes have reduced the workload of cleaning personnel to some extent, they are not effective at removing stubborn dirt. Therefore, structural optimization of existing electric cleaning brushes is necessary. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-action cleaning brush with brush heads rotating in both directions, driven simultaneously by a single motor to improve cleaning efficiency.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A dual-action cleaning brush includes a housing and a motor and a reducer fixedly mounted inside the housing and coaxially connected. One end of the housing is rotatably provided with an outer brush head and an inner brush head located on the same plane of rotation. The outer brush head is eccentrically arranged with the reducer and is driven by a first gear assembly. The inner brush head is coaxially arranged with the outer brush head and is driven by a second gear assembly. The motor drives the outer brush head to rotate forward via the first gear assembly and simultaneously drives the inner brush head to rotate in reverse via the second gear assembly.

[0006] Furthermore, the first gear assembly includes a first gear coaxially fixed to the output shaft of the reducer and a gear ring coaxially fixed to the outer brush head. The top outer ring and inner ring of the gear ring are both provided with teeth arranged in a circumferential direction, and the first gear meshes with the top outer ring of the gear ring.

[0007] Furthermore, the lower end of the gear ring is coaxially and detachably fixed to a rotating body, and a first bearing is provided between the rotating body and the housing, with the lower outer ring threadedly connected to the inner ring of the outer brush head.

[0008] Furthermore, the upper part of the rotating body is coaxially provided with an annular limiting platform, and the top is symmetrically provided with an outwardly protruding arc-shaped limiting platform. The outer circumference of the rotating body above the annular limiting platform is symmetrically provided with a first limiting plane. The lower part of the gear ring is provided with a downwardly extending conical extension. The inner ring of the lower end of the conical extension is provided with a second limiting plane that matches the first limiting plane. The bottom is in limiting contact with the annular limiting platform, and the top is limited by a retaining spring between it and the arc-shaped limiting platform.

[0009] Furthermore, the outer ring of the tapered extension is uniformly provided with reinforcing plates along the circumference.

[0010] Furthermore, the outer brush head has a circular groove coaxially arranged in the center, the inner brush head is separated in the circular groove and coaxially fixed to a central shaft, the upper end of the central shaft passes through the gear ring and is rotatably installed in the housing, and the second gear assembly includes a second gear coaxially fixed to the central shaft and a planetary gear meshing between the top inner ring of the gear ring and the second gear.

[0011] Furthermore, three planetary gears are evenly arranged along the circumference of the second gear.

[0012] Furthermore, the inner brush head has a through-hole at its center, and the lower end of the central shaft has a threaded hole corresponding to the through-hole. A locking screw is provided in the through-hole.

[0013] Furthermore, the inner brush head consists of three integrally formed fan-shaped brush blades that are evenly spaced along the circumference.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects:

[0015] (1) This utility model is provided with an outer brush head and an inner brush head that are coaxial and located on the same plane of rotation. The two brush heads are connected to the output end of the eccentrically set reducer through two sets of gear assemblies, so that when the motor is rotating, the two brush heads can rotate in two different directions at the same time, thereby improving the cleaning effect.

[0016] (2) The present invention achieves the transmission connection between the outer brush head and the reducer by meshing the top outer ring of the first gear and the gear ring, so that the outer brush head maintains the rotational motion opposite to that of the motor.

[0017] (3) This utility model sets a rotating body as an intermediate transition and connects the outer brush head with a thread to achieve quick assembly, which facilitates the replacement of the outer brush head later and saves the cost of use.

[0018] (4) This utility model achieves axial positioning of the rotating body through a snap ring and an annular limiting platform, and circumferential positioning through a limiting plane, thereby realizing the detachable connection between the rotating body and the gear ring, which is convenient for assembly.

[0019] (5) By setting a reinforcing plate, this utility model can improve the structural strength of the gear ring and reduce its self-weight, thereby reducing the load, reducing the moment of inertia and extending the service life of the motor.

[0020] (6) This utility model uses planetary gears to transition and realize the transmission between the second gear and the gear ring, thereby achieving the same rotational motion between the inner brush head and the output end of the motor. It has a simple structure and high transmission accuracy.

[0021] (7) This utility model is provided with multiple planetary gears that are evenly arranged, which improves the stability of the transmission, can handle greater torque, and improves the durability and service life of the transmission components.

[0022] (8) This utility model achieves detachable connection between the inner brush head and the central shaft by locking screws, which facilitates the replacement of the inner brush head in the later stage and saves the cost of use. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the gear transmission assembly structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the gear ring of this utility model;

[0028] Figure 5 This is a schematic diagram of the rotating body of this utility model.

[0029] The labels in the attached diagram are:

[0030] 1. Housing; 2. Motor; 3. Reducer; 4. Outer brush head; 4. Circular groove; 5. Inner brush head; 5. Connecting hole; 6. First gear; 7. Gear ring; 7. Conical extension; 7. Reinforcing plate; 7. Rotating body; 8. Annular limiting platform; 8. Arc-shaped limiting platform; 8. First limiting plane; 8. First bearing; 9. Snap ring; 10. Central shaft; 11. Second gear; 12. Planetary gear; 13. Locking screw; 14. Detailed Implementation

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] (Example 1)

[0033] like Figures 1 to 5The dual-action cleaning brush shown includes a housing 1, a motor 2, a reducer 3, an outer brush head 4, an inner brush head 5, a first gear assembly, and a second gear assembly. The motor 2 and reducer 3 are coaxially connected and fixedly mounted inside the housing 1. The outer brush head 4 and inner brush head 5 are coaxially arranged and rotatably mounted at one end of the housing 1, located on the same plane of rotation. The outer brush head 4 is eccentrically positioned with the reducer 3 and is driven by the first gear assembly. The inner brush head 5 is driven by the second gear assembly and is connected to the first gear assembly. Thus, driven by the motor 2, the inner and outer brush heads rotate in opposite directions, thereby improving the cleaning effect.

[0034] Specifically, the first gear assembly includes a first gear 6 and a gear ring 7. The first gear 6 is coaxially and fixedly connected to the output shaft of the reducer 3. The top outer ring and inner ring of the gear ring 7 are both provided with teeth arranged circumferentially. The first gear 6 meshes with the top outer ring of the gear ring 7, thereby driving the gear ring 7 to rotate. A rotating body 8 is coaxially provided at the lower end of the gear ring 7. A first bearing 9 is provided between the rotating body 8 and the housing 1. The lower outer ring is threadedly connected to the inner ring of the outer brush head 4, enabling quick assembly and facilitating the replacement of the outer brush head later, thus saving operating costs.

[0035] The upper part of the rotating body 8 is coaxially provided with an annular limiting platform 8-1, and the top is symmetrically provided with an outwardly protruding arc-shaped limiting platform 8-2. The outer circumference of the rotating body above the annular limiting platform 8-1 is symmetrically provided with a first limiting plane 8-3. The lower part of the gear ring 7 is provided with a downwardly extending conical extension 7-1. The lower end of the conical extension 7-1 has a second limiting plane that matches the first limiting plane 8-3. The bottom is in limiting contact with the annular limiting platform, and the top is limited between the annular limiting platform 8-2 and the arc-shaped limiting platform 8-2 by a retaining spring 10. The axial limiting of the rotating body 8 is achieved by the retaining spring 10 and the annular limiting platform 8-1, and the circumferential limiting is achieved by the limiting plane, thereby realizing the detachable fixed connection between the rotating body 8 and the gear ring 7, which is convenient for assembly. To improve the structural strength of the tapered extension 7-1, this embodiment provides reinforcing plates 7-2 uniformly along the circumference of the outer ring of the tapered extension 7-1. This not only improves the structural strength of the gear ring 7, but also reduces the weight of the gear ring 7 compared to directly increasing its wall thickness, thereby reducing the load, decreasing the moment of inertia, and extending the service life of the motor.

[0036] The outer brush head 4 has a circular groove 4-1 coaxially arranged at its center. The inner brush head 5 is spaced within the circular groove 4-1 and coaxially fixed to a central shaft 11. The upper end of the central shaft 11 passes through the gear ring 7 and is rotatably mounted inside the housing 1. The second gear assembly includes a second gear 12 coaxially fixed to the central shaft 11 and a planetary gear 13 meshing between the top inner ring of the gear ring 7 and the second gear 12. The transmission between the second gear 12 and the gear ring 7 is achieved through the transition of the planetary gear 13, thereby enabling the inner brush head 5 and the output end of the motor 1 to rotate in the same direction. The structure is simple and the transmission accuracy is high. To improve the smoothness of the transmission, three planetary gears 13 are evenly arranged along the circumference of the second gear in this embodiment.

[0037] To facilitate the replacement of the inner brush head 5, the inner brush head 5 in this embodiment has a through-hole 5-1 at its center. The lower end of the central shaft 11 has a threaded hole corresponding to the through-hole 5-1. A locking screw 14 is provided in the through-hole 5-1 and tightened into the threaded hole, thereby enabling quick assembly and facilitating the replacement of the inner brush head later. In addition, the inner brush head 5 is composed of three integrally formed fan-shaped brush blades evenly spaced along the circumference, which has a better cleaning effect.

[0038] This utility model features an outer brush head and an inner brush head that are coaxial and located on the same plane of rotation. It is connected to the output end of an eccentrically positioned reducer through two sets of gear assemblies. This allows the two brush heads to rotate simultaneously in two different directions when the motor is rotating, thereby improving the cleaning effect.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-action cleaning brush, characterized in that: The device includes a housing and a motor and a reducer that are fixed inside the housing and coaxially connected. One end of the housing is rotatably provided with an outer brush head and an inner brush head located on the same plane of rotation. The outer brush head is eccentrically arranged with the reducer and is driven by a first gear assembly. The inner brush head is coaxially arranged with the outer brush head and is driven by a second gear assembly. The motor drives the outer brush head to rotate forward via the first gear assembly and simultaneously drives the inner brush head to rotate in reverse via the second gear assembly.

2. The dual-action cleaning brush according to claim 1, characterized in that: The first gear assembly includes a first gear coaxially fixed to the output shaft of the reducer and a gear ring coaxially fixed to the outer brush head. The top outer ring and inner ring of the gear ring are provided with teeth arranged in a circumferential direction. The first gear meshes with the top outer ring of the gear ring.

3. A dual-action cleaning brush according to claim 2, characterized in that: The lower end of the gear ring is coaxially and detachably fixed to a rotating body. A first bearing is provided between the rotating body and the housing, and the lower outer ring is threadedly connected to the inner ring of the outer brush head.

4. A dual-action cleaning brush according to claim 3, characterized in that: The upper part of the rotating body is coaxially provided with an annular limiting platform, and the top is symmetrically provided with an outwardly protruding arc-shaped limiting platform. The outer circumference of the rotating body above the annular limiting platform is symmetrically provided with a first limiting plane. The lower part of the gear ring is provided with a downwardly extending conical extension. The inner ring of the lower end of the conical extension is provided with a second limiting plane that matches the first limiting plane. The bottom is in limiting contact with the annular limiting platform, and the top is limited by a retaining spring between it and the arc-shaped limiting platform.

5. A dual-action cleaning brush according to claim 4, characterized in that: The outer ring of the tapered extension is uniformly provided with reinforcing plates along the circumference.

6. A dual-action cleaning brush according to claim 2, characterized in that: The outer brush head has a circular groove coaxially arranged in the center. The inner brush head is separated and disposed in the circular groove and is coaxially fixed to a central shaft. The upper end of the central shaft passes through the gear ring and is rotatably mounted in the housing. The second gear assembly includes a second gear coaxially fixed to the central shaft and a planetary gear meshing between the top inner ring of the gear ring and the second gear.

7. A dual-action cleaning brush according to claim 6, characterized in that: The planetary gears are evenly arranged in three along the circumference of the second gear.

8. A dual-action cleaning brush according to claim 6, characterized in that: The inner brush head has a through-hole at its center, and the lower end of the central shaft has a threaded hole corresponding to the through-hole. A locking screw is tightened into the threaded hole inside the through-hole.

9. A dual-action cleaning brush according to claim 6, characterized in that: The inner brush head consists of three integrally formed fan-shaped brush blades that are evenly spaced along the circumference.

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