Outer rotor driving connection mechanism and cleaning robot

Abstract

The utility model relates to the technical field of cleaning drive, in particular to an outer rotor drive connecting mechanism and a cleaning robot, which comprise a bottom plate, a disc brush assembly, a rolling brush assembly and a drive assembly, a rolling brush bin is arranged on the bottom plate, the rolling brush assembly is arranged in the rolling brush bin, and the drive assembly is arranged on the bottom plate, positioned on one side of the rolling brush bin and connected with the disc brush assembly; the driving assembly comprises an outer rotor driving motor, an outer rotor fluted disc and a spiral gear shaft; the spiral gear shaft is connected with the rolling brush assembly, the outer rotor driving motor comprises an inner driving part and an outer driving part, the inner driving part is connected with the disc brush assembly, the outer rotor fluted disc is connected with the outer driving part, and the outer rotor fluted disc is meshed with the spiral gear shaft; the outer rotor driving motor is used for driving the disc brush assembly to rotate; according to the outer rotor driving connection mechanism, high integration of power distribution and transmission is achieved, a transmission chain is simplified, energy loss is reduced, and working efficiency and operation quality are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning drives, in particular to an outer rotor drive connection mechanism and a cleaning robot. Background Art

[0002] The driving structure of a cleaning robot is the foundation for its core functions and is typically composed of multiple precision components working in concert. The core lies in the motor, which utilizes a high-performance brushless DC motor to provide powerful power for the robot's movement and vacuuming. These motors, through a sophisticated transmission system, convert electrical energy into mechanical energy, driving the robot's cleaning operations.

[0003] The cleaning robot has a cleaning disc brush and a cleaning roller brush. The cleaning disc brush is used to sweep the object to be cleaned toward the cleaning roller brush so that the cleaning roller brush can be stored. The existing disc brush drive structure has a relatively independent drive structure and a high structural cost. Therefore, it is necessary to make new improvements to the existing cleaning robot drive structure. Utility Model Content

[0004] In order to solve the above problems, the outer rotor drive connection mechanism of the utility model realizes a high degree of integration of power distribution and transmission, which not only simplifies the transmission chain and reduces energy loss, but also significantly improves the work efficiency and operation quality of the outer rotor drive connection mechanism and cleaning robot.

[0005] The technical solution adopted by the present utility model is: an outer rotor drive connection mechanism, including a base plate, a disc brush assembly, a roller brush assembly and a drive assembly, a roller brush bin is provided on the base plate, the roller brush assembly is provided in the roller brush bin, the drive assembly is provided on the base plate and is located on one side of the roller brush bin, and is connected to the disc brush assembly; the drive assembly includes an outer rotor drive motor, an outer rotor gear plate and a helical gear shaft; the helical gear shaft is connected to the roller brush assembly, the outer rotor drive motor includes an inner drive part and an outer drive part, the inner drive part is connected to the disc brush assembly, the outer rotor gear plate is connected to the outer drive part, and the outer rotor gear plate is meshed with the helical gear shaft; the outer rotor drive motor is used to drive the disc brush assembly to rotate, and at the same time drive the helical gear shaft and the roller brush assembly to rotate.

[0006] A further improvement to the above solution is that the disc brush assembly includes a disc brush connector and a cleaning disc brush, the disc brush connector is used to connect to the internal drive unit; the cleaning disc brush is detachably connected to the disc brush connector.

[0007] A further improvement to the above scheme is that the roller brush assembly includes a roller brush bracket, a cleaning roller brush and a drive connector, the roller brush bracket is arranged on both sides of the roller brush bin, the cleaning roller brush is arranged on the roller brush bracket, and the drive connector is used to connect the cleaning roller brush to the spiral gear shaft.

[0008] A further improvement to the above solution is that roller brush bearings are provided at both ends of the cleaning roller brush, and the cleaning roller brush is rotatably arranged on the roller brush bracket through the roller brush bearings.

[0009] A further improvement to the above solution is that the helical gear shaft is provided with a gear shaft bracket, and the gear shaft bracket is used for rotational connection of one end of the helical gear shaft.

[0010] A further improvement to the above scheme is that the outer rotor drive motor includes a base, a stator assembly, a shaft assembly, a rotor housing and a rotor assembly, one end of the base is mounted on the base plate, the stator assembly is arranged on the base, one end of the shaft assembly extends to the outside of the base to form an internal drive part, and the other end is connected to the rotor housing, the rotor assembly is arranged in the rotor housing and opposite to the stator assembly, and the external drive part is arranged outside the rotor housing and is used to install the outer rotor gear disc.

[0011] A further improvement to the above solution is that the stator assembly is formed by a plurality of windings in a circumferential array, and the rotor assembly is formed by a plurality of magnetic tiles in a circumferential array, wherein the inner diameter of the magnetic tile is opposite to the outer diameter of the winding.

[0012] A further improvement to the above solution is that the shaft assembly includes a rotary bearing and a driving shaft arranged on the rotary bearing, one end of the driving shaft is connected to the disc brush assembly, and the other end is connected to the rotor housing.

[0013] A further improvement to the above solution is that the outer rotor gear disc is evenly distributed with spiral tooth blocks, and the outer diameter of the spiral gear shaft is provided with spiral tooth grooves, and the spiral tooth grooves are used to cooperate with the spiral tooth blocks.

[0014] A cleaning robot comprises the outer rotor drive connection mechanism.

[0015] The beneficial effects of the utility model are:

[0016] Compared to existing cleaning robot drive structures, this new robot utilizes an external rotor drive motor as its core power source. Its unique internal and external drive design not only improves power output stability and efficiency, but also enables independent and interlocking control of the disc and roller brush assemblies. The internal drive directly rotates the disc brush assembly, ensuring precise operation during cleaning or operation. The external drive indirectly drives the roller brush assembly through the precise meshing of the outer rotor gear and the helical gear shaft, achieving wider cleaning coverage and deeper cleaning. The roller brush assembly is integrated into the roller brush compartment, effectively protecting it from environmental influences, extending its service life and simplifying maintenance. Furthermore, the side-by-side arrangement of the drive assembly and roller brush compartment optimizes the overall structural layout, making the unit more compact and easier to install and operate. The external rotor drive connection achieves highly integrated power distribution and transmission, simplifying the drive chain and reducing energy loss while significantly improving work efficiency and quality. This mechanism demonstrates its superior performance in applications ranging from household cleaning to industrial cleaning and agricultural operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the outer rotor drive connection mechanism of the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of the inner and outer rotor drive connection mechanism from another perspective;

[0019] Figure 3 for Figure 1 A three-dimensional schematic diagram of the structure of the inner and outer rotor drive connection mechanism;

[0020] Figure 4 for Figure 1 A three-dimensional schematic diagram of the structure of the inner and outer rotor drive connection mechanism;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the outer rotor drive motor with the inner and outer rotor drive connection mechanism.

[0022] Explanation of the reference numerals: base plate 1, disc brush assembly 2, disc brush connector 21, cleaning disc brush 22, roller brush assembly 3, roller brush bracket 31, cleaning roller brush 32, roller brush bearing 321, drive connector 33, drive assembly 4, outer rotor drive motor 41, base 411, stator assembly 412, shaft assembly 413, rotating bearing 4131, drive shaft 4132, rotor housing 414, rotor assembly 415, outer rotor gear disc 42, spiral gear block 421, spiral gear shaft 43, gear shaft bracket 431, spiral gear groove 432. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0024] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. Figures 1 to 5As shown, in one embodiment of the present invention, an outer rotor drive connection mechanism is involved, including a base plate 1, a disc brush assembly 2, a roller brush assembly 3 and a drive assembly 4, the base plate 1 is provided with a roller brush bin 11, the roller brush assembly 3 is arranged in the roller brush bin 11, the drive assembly 4 is arranged on the base plate 1 and is located on one side of the roller brush bin 11, and is connected to the disc brush assembly 2; the drive assembly 4 includes an outer rotor drive motor 41, an outer rotor gear disk 42 and a helical gear shaft 43; the helical gear shaft 43 is connected to the roller brush assembly 3, the outer rotor drive motor 41 includes an inner drive part and an outer drive part, the inner drive part is connected to the disc brush assembly 2, the outer rotor gear disk 42 is connected to the outer drive part, and the outer rotor gear disk 42 is meshed with the helical gear shaft 43; the outer rotor drive motor 41 is used to drive the disc brush assembly 2 to rotate, and at the same time drive the helical gear shaft 43 and the roller brush assembly 3 to rotate. This embodiment utilizes an outer rotor drive motor 41 as its core power source, featuring a unique internal and external drive design. This not only improves power output stability and efficiency, but also enables independent and coordinated control of the disc brush assembly 2 and roller brush assembly 3. The internal drive directly drives the disc brush assembly 2, ensuring precise operation during cleaning or operation. The external drive indirectly drives the roller brush assembly 3 through the precise meshing of the outer rotor gear 42 and the helical gear shaft 43, achieving wider cleaning coverage and deeper cleaning. The roller brush assembly 3 is integrated into the roller brush compartment 11, effectively protecting it from environmental influences, extending its service life, and simplifying maintenance. Furthermore, the side-by-side arrangement of the drive assembly 4 and roller brush compartment 11 optimizes the overall structural layout, making the unit more compact and easier to install and operate. The outer rotor drive connection achieves highly integrated power distribution and transmission, simplifying the drive chain and reducing energy loss while significantly improving work efficiency and quality. This mechanism demonstrates its superior performance in applications ranging from household cleaning to industrial sweeping and agricultural operations.

[0026] The brush assembly 2 includes a brush connector 21 and a cleaning brush 22. The brush connector 21 is connected to the internal drive unit; the cleaning brush 22 is detachably connected to the brush connector 21. In this embodiment, the modular combination of the brush connector 21 and the cleaning brush 22 simplifies structural complexity and enhances the system's flexibility and maintainability. The detachable design of the cleaning brush 22 greatly facilitates users to replace different brush heads according to different cleaning needs, as well as conveniently perform cleaning, maintenance, and replacement, reducing maintenance costs and time.

[0027] The roller brush assembly 3 includes a roller brush bracket 31, a cleaning roller brush 32, and a drive connector 33. The roller brush bracket 31 is arranged on both sides of the roller brush compartment 11, and the cleaning roller brush 32 is arranged on the roller brush bracket 31. The drive connector 33 is used to connect the cleaning roller brush 32 to the helical gear shaft 43. Specifically, roller brush bearings 321 are provided at both ends of the cleaning roller brush 32, and the cleaning roller brush 32 is rotatably mounted on the roller brush bracket 31 via the roller brush bearings 321. The helical gear shaft 43 is provided with a gear bracket 431, and the gear bracket 431 is used for rotational connection of one end of the helical gear shaft 43. In this embodiment, the exquisite layout of the roller brush assembly 3 ensures stable support of the cleaning roller brush 32 during high-speed rotation through the roller brush bracket 31. The cleaning roller brush 32 is rotated using the roller brush bearings 321, which not only reduces friction loss but also greatly improves rotation flexibility, ensuring that the floor is cleaned without blind spots. In particular, the drive connector 33, as a key connecting component, cleverly connects the cleaning roller brush 32 to the helical gear shaft 43, achieving efficient power transmission. The gear shaft bracket 431 equipped with the helical gear shaft 43 ensures a stable rotational connection at one end of the gear shaft.

[0028] See Figure 5As shown, the outer rotor drive motor 41 includes a base 411, a stator assembly 412, a shaft assembly 413, a rotor housing 414, and a rotor assembly 415. One end of the base 411 is mounted on the base plate 1, and the stator assembly 412 is mounted on the base 411. One end of the shaft assembly 413 extends to the outside of the base 411 to form an inner drive portion, and the other end is connected to the rotor housing 414. The rotor assembly 415 is disposed within the rotor housing 414 and opposite the stator assembly 412. The outer drive portion is disposed outside the rotor housing 414 and is used to mount the outer rotor gear 42. Specifically, the stator assembly 412 is formed by a plurality of windings in a circumferential array, and the rotor assembly 415 is formed by a plurality of magnetic tiles in a circumferential array, with the inner diameter of the magnetic tiles corresponding to the outer diameter of the windings. The rotating shaft assembly 413 includes a rotating bearing 4131 and a driving shaft 4132 arranged on the rotating bearing 4131. One end of the driving shaft 4132 is connected to the disc brush assembly 2 and the other end is connected to the rotor housing 414. In this embodiment, the base 411 is firmly mounted on the bottom plate 1, which ensures the stability of the entire drive system and lays the foundation for efficient operation. The circumferential array layout of the stator assembly 412 and the rotor assembly 415 maximizes the magnetic field action area, improves the torque density and operating efficiency of the motor, and enables the cleaning robot to have stronger power output and more precise control capabilities. The rotating shaft assembly 413 enhances the smoothness and stability of the rotation, reduces friction loss, and extends the life of the motor through the combination of the rotating bearing 4131 and the driving shaft 4132. In addition, the driving shaft 4132 is directly connected to the disc brush assembly 2, which realizes the directness and efficiency of power transmission and ensures the efficient execution of the cleaning operation. The provision of the outer rotor gear disc 42 further enhances the heat dissipation performance and load capacity of the motor, allowing the motor to maintain stable operation even in complex working environments.

[0029] The outer rotor gear disc 42 is evenly distributed with helical tooth blocks 421. The outer diameter of the helical gear shaft 43 is provided with helical tooth grooves 432, which are used to engage the helical tooth blocks 421. In this embodiment, efficient and smooth power transmission is ensured. The meshing mechanism of the helical teeth effectively reduces energy loss and disperses the meshing shock through a continuous spiral path, reducing operating noise and vibration. Secondly, the design of evenly distributed helical tooth blocks 421 enhances the structure's load-bearing capacity and durability, maintaining stable power output even under high-speed or high-load conditions, thereby extending the robot's service life.

[0030] With its compact structure and high load capacity, the outer rotor motor provides a stable power source for cleaning robots, effectively improving cleaning efficiency and operational stability. During the cleaning process, the outer rotor motor drives the roller brush to rotate at high speed, achieving efficient floor cleaning while reducing mechanical friction losses and extending the roller brush's service life.

[0031] The above embodiments merely illustrate 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 present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An outer rotor drive connection mechanism, characterized in that: It includes a base plate, a disc brush assembly, a roller brush assembly and a drive assembly, wherein a roller brush bin is provided on the base plate, the roller brush assembly is provided in the roller brush bin, the drive assembly is provided on the base plate and is located on one side of the roller brush bin, and is connected to the disc brush assembly; the drive assembly includes an outer rotor drive motor, an outer rotor gear disk and a helical gear shaft; the helical gear shaft is connected to the roller brush assembly, the outer rotor drive motor includes an inner drive part and an outer drive part, the inner drive part is connected to the disc brush assembly, the outer rotor gear disk is connected to the outer drive part, and the outer rotor gear disk is meshed with the helical gear shaft; the outer rotor drive motor is used to drive the disc brush assembly to rotate, and at the same time drive the helical gear shaft and the roller brush assembly to rotate.

2. The outer rotor drive connection mechanism according to claim 1, characterized in that: The disc brush assembly includes a disc brush connector and a cleaning disc brush. The disc brush connector is used to connect to the internal driving part; the cleaning disc brush is detachably connected to the disc brush connector.

3. The outer rotor drive connection mechanism according to claim 1, characterized in that: The roller brush assembly includes a roller brush bracket, a cleaning roller brush and a drive connector. The roller brush bracket is arranged on both sides of the roller brush bin, the cleaning roller brush is arranged on the roller brush bracket, and the drive connector is used to connect the cleaning roller brush to the spiral gear shaft.

4. The outer rotor drive connection mechanism according to claim 3, characterized in that: Roller brush bearings are provided at both ends of the cleaning roller brush, and the cleaning roller brush is rotatably arranged on the roller brush bracket through the roller brush bearings.

5. The outer rotor drive connection mechanism according to claim 4, characterized in that: The helical gear shaft is provided with a gear shaft bracket, and the gear shaft bracket is used for rotational connection of one end of the helical gear shaft.

6. The outer rotor drive connection mechanism according to claim 1, characterized in that: The outer rotor drive motor includes a base, a stator assembly, a rotating shaft assembly, a rotor housing and a rotor assembly. One end of the base is mounted on a base plate, the stator assembly is arranged on the base, one end of the rotating shaft assembly extends to the outside of the base to form an internal drive portion, and the other end is connected to the rotor housing. The rotor assembly is arranged in the rotor housing and opposite to the stator assembly. The external drive portion is arranged outside the rotor housing and is used to install the outer rotor gear disc.

7. The outer rotor drive connection mechanism according to claim 6, characterized in that: The stator assembly is formed by a plurality of windings in a circumferential array, and the rotor assembly is formed by a plurality of magnetic tiles in a circumferential array, wherein the inner diameter of the magnetic tile is opposite to the outer diameter of the winding.

8. The outer rotor drive connection mechanism according to claim 7, characterized in that: The rotating shaft assembly includes a rotating bearing and a driving rotating shaft arranged on the rotating bearing. One end of the driving rotating shaft is connected to the disc brush assembly, and the other end is connected to the rotor housing.

9. The outer rotor drive connection mechanism according to claim 1, characterized in that: The outer rotor gear disc is evenly distributed with spiral gear blocks, and the outer diameter of the spiral gear shaft is provided with spiral gear grooves, and the spiral gear grooves are used to match the spiral gear blocks.

10. A cleaning robot, characterized in that: It includes the outer rotor drive connection mechanism according to any one of claims 1 to 9.

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