Vacuum Cleaner Brushroll with Inflection Point for Debris Collection
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Solution Overview
Problem
Conventional vacuum cleaners lack an effective mechanism for efficiently collecting and removing debris, particularly hair and other elongated materials, from the brushroll during maintenance, leading to clogging and reduced cleaning efficiency.
Innovation Solution
The vacuum cleaner design incorporates a brushroll with a unique configuration featuring an inflection point and materials that change direction around the axis, along with a removable aperture with teeth to collect debris, ensuring efficient debris removal and maintenance by aligning with the brushroll's grooves during extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional brushrolls are used without special debris collection mechanisms, then the structure remains simple, but debris accumulates on the brushroll leading to clogging and reduced cleaning efficiency
Solution Approach 1:
The brushroll is segmented into multiple functional zones including an inflection point that divides the brushroll into two sections with opposite pitch directions. This segmentation allows debris to be directed toward collection points at the ends of the brushroll, improving debris removal efficiency without requiring a completely new brushroll design
Solution Approach 2:
Teeth are introduced as an intermediary element between the brushroll and the aperture. These teeth align with the grooves on the brushroll surface to mechanically scrape and collect debris as the brushroll is removed from the base, providing an effective debris collection mechanism that adds minimal complexity
2Ease of operation
If the brushroll uses a single-direction pitch, then the structure is simpler, but debris cannot be effectively directed toward collection points for removal
Solution Approach 1:
The brushroll employs asymmetric pitch configuration where the pitch direction reverses at the inflection point. One section of the brushroll has a pitch wrapping in a first direction while the other section has a pitch wrapping in an opposite second direction. This asymmetry creates natural debris flow paths that direct debris toward the collection teeth at the ends, making debris removal easier without complex mechanical mechanisms
Data Source
AI summary
A vacuum cleaner includes a base and a brushroll positioned within the base. The base has a suction opening and is configured to move along a surface to be cleaned. The brushroll is rotatable relative to the base about an axis, and the brushroll includes a first end, a second end, an inflection point located between the ends, and a material that protrudes radially away from the brushroll. The material extends between the first end and the second end and wraps around the brushroll with a pitch. The material wraps in a first direction between the first end and the inflection point and wraps in a second direction between the inflection point and the second end.