Replaceable Twisted-Wire Bristle Assembly Without Complex Brackets

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Solution Overview

Problem

Existing grill brushes with removable and replaceable bristle assemblies often have complex hinge arrangements or bracket structures that are difficult to clean and use, and do not efficiently utilize twisted-in-wire bristles, leading to increased material waste and expense when the bristles become worn.

Innovation Solution

A brush design featuring a handle with flanges that have apertures and notches to securely engage a twisted-in-wire bristle assembly without complex brackets or fasteners, allowing for easy removal and replacement, and incorporating a sinuous geometry for efficient cleaning and use with various handle shapes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of repair

If complex hinge arrangements or bracket structures are used to secure replaceable bristle assemblies, then the bristles can be removed and replaced, but the brush becomes difficult to clean and the structure becomes more complex

Engineering Contradiction:

Improvebristle replacementVSAvoidbrush structure

Core Design Contradiction:

Ease of repairVSDevice complexity

Solution Approach 1:

The brush is divided into separate functional components: a handle, a head portion with flanges, and a replaceable bristle assembly. The flanges on the head portion are segmented with multiple apertures that can engage with corresponding protrusions on the bristle assembly, allowing easy separation and replacement without complex fastening mechanisms.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bristle assembly is extracted as a completely separate, removable component from the brush head. The flanges on the head portion provide engagement points, but the bristle assembly can be easily removed by releasing the engagement between the flanges and the bristle assembly, eliminating the need for permanent or complex attachment structures.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of repair

If complex hinge arrangements or bracket structures are used to secure replaceable bristle assemblies, then the bristles can be removed and replaced, but the brush becomes difficult to clean

Engineering Contradiction:

Improvebristle replacementVSAvoidcleaning difficulty

Core Design Contradiction:

Ease of repairVSObject-generated harmful factors

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of repair

If the entire brush is discarded when bristles wear out, then replacement is simple, but material waste increases and expense increases

Engineering Contradiction:

Improvebrush replacementVSAvoidmaterial waste

Core Design Contradiction:

Ease of repairVSLoss of substance

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of discarding the entire brush when bristles wear out, only the bristle assembly is removed and discarded, while the handle and head portion are retained and reused. This selective replacement significantly reduces material waste and expense, as the durable components remain in service while only the consumable bristle assembly is replaced.

Inventive Principle:

Principle #34Discarding and recovering

4Strength

If brackets are added to secure the bristle assembly, then the bristles are held firmly, but the brush becomes more difficult to clean and use

Engineering Contradiction:

Improvebristle attachmentVSAvoidcleaning difficulty

Core Design Contradiction:

StrengthVSObject-generated harmful factors

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The complex mechanical bracket system is replaced with a simpler engagement mechanism based on the interaction between the flanges with apertures and the bristle assembly protrusions. This substitution maintains adequate holding strength while eliminating the cleaning difficulties associated with complex brackets.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9210993B2Brush with replaceable twisted-in-wire bristle assembly

Publication Date: 2015.12.15 WEBER-STEPHEN PRODUCTS

AI summary

A brush for cleaning a grill or other surface having a bristle assembly of twisted-in-wire material that is removable and replaceable.