Cleaning head provided with a rotary brush
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Solution Overview
Problem
The assembly of vacuum cleaner cleaning heads with rotating brush drive systems is complex due to the need for multiple rolling bearings, which complicates positioning and centering, increasing weight and mounting time, and affecting suction performance.
Innovation Solution
A cleaning head design where the speed reducer is housed within and fixed to the rotating brush, allowing for simplified assembly with a single rolling bearing and improved motor cooling, reducing weight and mounting time while enhancing suction performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional drive system with multiple rolling bearings is used to position and center the rotating brush, then the rotating brush can be properly positioned relative to the drive motor, but the assembly becomes complex and tedious, increasing weight and mounting time
Solution Approach 1:
The patent extracts the speed reducer from the housing and integrates it directly onto the rotating brush assembly. This removes the need for multiple rolling bearings and complex positioning mechanisms in the housing, simplifying the overall structure while maintaining proper positioning and centering of the rotating brush relative to the drive motor
Solution Approach 2:
The speed reducer is merged with the rotating brush assembly by fixing it directly to the brush. This combination eliminates the need for separate positioning components and reduces the number of parts requiring assembly, thereby reducing assembly complexity and mounting time
2Reliability
If multiple rolling bearings are used to ensure proper positioning of the rotating brush, then centering is achieved, but the weight of the cleaning head increases
Solution Approach 1:
By extracting the speed reducer and mounting it directly on the rotating brush, the patent eliminates the need for multiple rolling bearings in the housing, thereby reducing the overall weight of the cleaning head while maintaining proper centering through the integrated speed reducer positioning
3Ease of manufacture
If the drive motor is positioned away from the rotating brush, then assembly is simpler, but cooling performance deteriorates and suction performance is reduced
Solution Approach 1:
The integration of the speed reducer with the rotating brush allows the drive motor to be positioned closer to the brush, improving thermal contact and cooling performance. The merged configuration enables better heat dissipation while maintaining assembly simplicity through the reduced number of components
4Stability of the object's composition
If a traditional drive system with separate speed reducer and rotating brush is used, then the structure is stable, but mounting time increases
Solution Approach 1:
By merging the speed reducer with the rotating brush into a single integrated assembly, the patent reduces the number of separate components that need to be mounted and secured. This integration maintains structural stability while significantly reducing mounting time through fewer assembly steps
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
The cleaning head (2) comprises a housing (3), a drive motor (19), a speed reducer rotationally coupled to the drive motor (19), and a rotating brush (13) configured to be driven in rotation by the drive motor (19) via the speed reducer, the rotating brush (13) being removably mounted in the housing (3) of the cleaning head. The speed reducer is housed within the rotating brush (13) and is fixed to the rotating brush (13) such that the speed reducer remains attached to the rotating brush (13) when the rotating brush (13) is removed from the housing (3) of the cleaning head (2).