Dish cleaning brushes
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Solution Overview
Problem
Conventional dish cleaning brushes are costly to manufacture and have structural and functional limitations, particularly in their multi-step bristle formation and assembly process, which do not efficiently address the need for effective removal of tough baked-in food residue.
Innovation Solution
A hand-held dish cleaning brush with an elastomer-based scrubbing head featuring integrally formed bristles and scraping projections, where the bristles are offset from the scraping teeth to prevent damage, and the handle is angled to facilitate manual pressure, using a twin-shot injection moulding process for cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional multi-step bristle formation and assembly process is used, then manufacturing precision is maintained, but manufacturing cost increases and device complexity increases
Solution Approach 1:
The patent merges the bristle formation and head assembly into a single injection molding process. The bristles are formed as integral protrusions from the brush head during the molding process itself, eliminating the need for separate bristle formation, cutting, and assembly steps. This reduces manufacturing complexity and cost while maintaining production precision.
Solution Approach 2:
The brush head serves multiple functions: it acts as both the structural support and the bristle carrier. The elastomer material provides both the head body and the flexible cleaning elements, reducing the number of components needed and simplifying the manufacturing process.
2Reliability
If bristles are aligned directly with scraping teeth, then cleaning effectiveness is improved, but bristle damage increases
Solution Approach 1:
The patent creates different spatial zones within the brush head: bristles are positioned in one area while scraping teeth are positioned in another area. This local differentiation allows bristles to perform gentle cleaning in their zone while scraping teeth handle tough residue in theirs, preventing bristle damage while maintaining overall cleaning effectiveness.
Solution Approach 2:
The cleaning functions are segmented into distinct elements: flexible bristles for general cleaning and rigid scraping teeth for tough residue. These segmented elements are positioned separately rather than aligned, allowing each to perform its specialized function without interfering with or damaging the other.
3Adaptability or versatility
If rigid handle and head design is used, then structural strength is maintained, but cleaning versatility decreases
Solution Approach 1:
The patent introduces dynamic flexibility to the brush head through the use of elastomer material. The head can flex and adapt to different surface contours and angles, enhancing cleaning versatility. The angled configuration allows the head to dynamically adjust its position relative to the handle for better access to different cleaning zones.
Solution Approach 2:
The brush head is made from elastomer, a material that combines flexibility with sufficient structural strength. This composite approach allows the head to be both adaptable to various cleaning surfaces and durable enough to withstand scrubbing forces, resolving the contradiction between versatility and strength.
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
The brush provides a more flexible, versatile, and cost-effective solution for removing tough food residue with reduced risk of bristle damage, offering improved cleaning performance and manufacturing efficiency compared to traditional designs.
Implementation Method 1
a scrubbing head (13) in the form of a working part of an elastomer integrally formed with a plurality of bristles (15) and with a plurality of scraping projections (16) formed as an array of scraping teeth
Implementation Method 2
The bristles (15) are not directly aligned with but off-set from the scraping teeth (16) and pass between the scraping teeth when flexed forwardly or rearwardly toward the scraping teeth
Data Source
Figure 1~2
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AI summary
The present invention provides inter alia a hand-held dish cleaning brush that comprises an elongate handle (12) with a scrubbing head (13) at one end, the scrubbing head including a working part (14) of an elastomer integrally formed with a plurality of bristles (15) and with a plurality of scraping projections that are formed as an array of scraping teeth (16), wherein the bristles are not directly aligned with but off-set from the scraping teeth and pass between the scraping teeth when flexed forwardly or rearwardly toward the scraping teeth.