Vacuum Cleaner Edge Cleaning Accessory with Segmented Rotating Brushes
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Solution Overview
Problem
Existing vacuum cleaners struggle to effectively clean the edges of floors where they meet upright surfaces, such as walls, due to the width of the cleaning head and inadequate engagement by brushes, often requiring additional tools for thorough cleaning.
Innovation Solution
A cleaning accessory for vacuum cleaners featuring a housing with a rotatable cleaning brush and a rotatable cleaning bar, where the brush is seated within a drive mechanism coupled to the bar, allowing both to rotate about a common axis for improved edge cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the width of the floor cleaning head is increased to cover more area, then cleaning coverage is improved, but edge cleaning capability deteriorates
Solution Approach 1:
The cleaning head is segmented into a main floor cleaning brush and separate edge cleaning brushes positioned at the sides. The edge cleaning brushes are specifically oriented to engage with edges and corners, allowing the main brush to maintain its width for coverage while the segmented edge brushes provide precise edge cleaning capability.
Solution Approach 2:
Different parts of the cleaning head have different functional qualities - the main brush is designed for general floor cleaning with wide coverage, while the edge cleaning brushes at the periphery are specifically designed with bristles oriented to engage with vertical surfaces and edges, providing localized quality appropriate for edge cleaning.
2Manufacturing precision
If additional brushes are added to clean edges, then edge cleaning capability is improved, but device complexity increases
Solution Approach 1:
The edge cleaning brushes are merged into the housing structure of the main cleaning head, sharing the same drive mechanism and rotation axis. This integration allows multiple cleaning functions (main floor cleaning and edge cleaning) to be combined in a single unified structure, improving edge cleaning capability without proportionally increasing device complexity.
3Productivity
If a single pass cleaning system is used, then productivity is improved, but edge cleaning effectiveness deteriorates
Solution Approach 1:
The edge cleaning brushes are pre-positioned and pre-oriented at the sides of the cleaning head before contact with the edge occurs. The bristles are angled and positioned to automatically engage with vertical surfaces and edges as the cleaner approaches, enabling effective edge cleaning to occur in advance during the same pass rather than requiring a separate follow-up pass.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
A cleaning accessory for a vacuum cleaner comprises a housing. A rotatable cleaning brush is rotatably mounted to the housing. The rotatable cleaning brush has at least one flexible cleaning element projecting outwards from a side of the housing. The at least one flexible cleaning element is configured to rotate and engage with a surface to be cleaned. A rotatable cleaning bar rotatably is mounted within the housing and the rotatable cleaning brush is rotatably coupled to the rotatable cleaning bar. At least a portion of the rotatable cleaning brush is seated within the rotatable cleaning bar or a drive mechanism coupled to the rotatable cleaning bar.