Multi-Plane Side Brush Layout for Wider Robot Vacuum Coverage
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Solution Overview
Problem
Existing side brushes for vacuum cleaners, especially robot vacuums, suffer from inadequate area coverage due to the wide spacing of bristle tufts, leading to missed dirt particles and increased noise and wear from high rotational speeds.
Innovation Solution
A side brush design with a higher number of bristle tufts, arranged in multiple parallel planes with tips aligned on a common enveloping circle, providing closer sweeps and improved area coverage without increasing the brush core size, and tangentially oriented sleeves for enhanced maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of bristle tufts is increased to improve area coverage, then the surface cleaning performance is improved, but the brush core size and device complexity increase
Solution Approach 1:
The patent applies dimensionality change by arranging bristle tufts in multiple parallel planes (at least two planes) instead of a single plane. This spatial arrangement allows increasing the number of bristle tufts from 3-5 to at least 10 tufts while maintaining a compact brush core size. The multi-plane configuration enables closer spacing of bristle sweeps across the surface without requiring a larger brush core diameter, thus improving area coverage without proportionally increasing device complexity.
2Productivity
If the rotational speed of the side brush is increased to improve cleaning efficiency, then the productivity is improved, but the noise and wear increase
Solution Approach 1:
The patent changes the structural parameter of bristle tuft arrangement from few and widely spaced to numerous and closely spaced (at least 10 tufts in multiple planes). This parameter change allows the side brush to achieve effective area coverage at lower rotational speeds. With more bristle tufts covering the surface, the cleaning efficiency is maintained even when rotational speed is reduced, thereby decreasing noise generation and wear on both the brush and floor surface.
3Productivity
If the bristle tufts are arranged in one plane to increase the number of tufts, then the area coverage is improved, but the installation space required increases
Solution Approach 1:
The patent resolves this contradiction by transitioning from a single-plane arrangement to a multi-plane arrangement of bristle tufts. By distributing tufts across at least two parallel planes, the design achieves increased area coverage (at least 10 tufts) within a more compact radial envelope. The multiple planes allow vertical stacking of bristle rows, reducing the required installation space compared to a single-plane configuration with the same number of tufts.
Solution Approach 2:
The patent employs a curved or spherical brush core geometry where bristle tufts are arranged to follow the curvature. This spherical arrangement allows multiple planes of bristle tufts to be compactly organized around the curved surface, maximizing area coverage while minimizing the overall installation space required. The curved geometry enables efficient space utilization compared to flat planar arrangements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhanced surface cleaning performance with better area coverage, reduced noise, and decreased wear due to lower rotational speeds, while maintaining stability and avoiding obstacles effectively.
Implementation Method 1
An important principle is the impulse-afflicted solid contact between the brush filaments and the ground being worked on as well as the dirt particles located there. In this way, said dirt particles are mobilized and transported.
Data Source
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Figure 3
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AI summary
The invention relates to a vacuum cleaner side brush (10) for a floor care device with an increased number of bristle tufts (12) and a floor care device with at least one such vacuum cleaner side brush (10).