Non-Circular Scrubber Brush Head for Better Surface Visibility

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Solution Overview

Problem

Conventional scrubbers with circular brush heads obstruct the user's view of the work surface due to their circular design, limiting visibility and efficiency during cleaning.

Innovation Solution

The development of non-circular brush heads with radially extending lobes, where at least one lobe follows a curvilinear or rectilinear path, allowing for varying widths and an outer ring for structural integrity, enabling better visibility and cleaning efficiency while maintaining attachment and operation with a motor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a circular brush head is used, then the brush head provides uniform scrubbing coverage, but the user's view of the work surface is obstructed

Engineering Contradiction:

ImprovevisibilityVSAvoidbrush head design

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The brush head transitions from a conventional circular symmetric design to a non-circular asymmetric design with lobes of varying widths. This asymmetric configuration creates gaps between the lobes that allow users to view the work surface during cleaning, directly resolving the visibility obstruction problem while maintaining effective scrubbing coverage through the distributed lobe structure.

Inventive Principle:

Principle #4Asymmetry

2Illumination intensity

If a non-circular brush head with lobes is used, then visibility of the work surface is improved, but the structural integrity may be compromised

Engineering Contradiction:

ImprovevisibilityVSAvoidstructural integrity

Core Design Contradiction:

Illumination intensityVSStrength

Solution Approach 1:

The brush head is segmented into multiple lobes extending radially from a central portion, with at least one lobe following a curvilinear path. This segmentation creates the necessary gaps for visibility while the central portion and attachment feature maintain structural coherence. The segmented lobe design allows light to pass through while preserving overall structural integrity.

Inventive Principle:

Principle #1Segmentation

3Productivity

If lobes with varying widths are used, then cleaning effectiveness is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidbrush head fabrication

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The brush head incorporates lobes with dynamically varying widths along their length, with at least one lobe extending along a curvilinear path rather than a straight line. This dynamic variation in lobe geometry optimizes cleaning effectiveness by providing different scrubbing surface areas at different radial positions, while the curvilinear path allows for more efficient material removal patterns. The design balances manufacturing complexity with enhanced cleaning performance.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentEP4154763A1Scrubber with non-circular brush head

Publication Date: 2023.03.29 TECHTRONIC CORDLESS GP

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AI summary

A brush head including a central portion centered respective to a rotation axis, an attachment feature configured to secure the brush head for rotation about the rotation axis, and a plurality of lobes. The plurality of lobes extend radially outwardly from the central portion and the rotation axis. At least one lobe extends along a curvilinear path, the curvilinear path extending through the central portion. The lobe has varying widths along the curvilinear path, the varying widths being perpendicular to the curvilinear path.