Systems and methods for wire bristle tuft attachment
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Solution Overview
Problem
Conventional grill brushes pose a safety hazard due to loose wire bristles that can be ingested while cleaning grates, failing to meet safety standards like CSA Z630:19, which requires improved wire-bristle tuft attachment strength and durability.
Innovation Solution
A method and system using a press machine and fixture to clamp and position the brush head, forming an irregular bend in the terminal by pressing it into a recess, ensuring the bristles are securely attached and meet the CSA standards by withstanding forces greater than 89 Newtons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wire brush attachment methods are used, then manufacturing simplicity is maintained, but wire bristle durability and attachment strength deteriorate causing bristles to detach and pose ingestion hazards
Solution Approach 1:
The brush head is divided into multiple recesses, each capable of independently securing individual bristles or small groups of bristles. This segmentation allows each bristle to be anchored separately in its own recess, preventing collective failure and enabling the brush to meet CSA durability standards while maintaining a relatively simple overall structure.
Solution Approach 2:
Recesses are pre-formed in the brush head structure before bristle insertion. These pre-prepared recesses provide ready-made anchoring points that guide bristle placement and ensure consistent attachment depth and strength, eliminating the need for complex post-attachment securing mechanisms.
2Reliability
If wire bristles are securely anchored in recesses, then bristle durability improves, but manufacturing precision requirements increase
Solution Approach 1:
By dividing the brush head into multiple discrete recesses, the precision requirement for each individual recess is reduced. Each recess needs to accommodate only one or a few bristles rather than requiring perfect uniformity across the entire brush head, making manufacturing more feasible while still achieving high overall durability.
Solution Approach 2:
The recesses are strategically positioned and sized to match the specific requirements of each bristle grouping location. This local optimization allows each recess to be precisely tailored to its function while accepting variations in other areas, reducing overall manufacturing precision demands while maintaining high bristle retention at critical locations.
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 solution enhances the attachment strength and durability of wire bristles, preventing them from detaching and ensuring compliance with safety standards, thereby reducing the risk of ingestion and improving user safety.
Implementation Method 1
forming an irregular bend in the terminal by pressing the terminal into the recess by a press machine
Implementation Method 2
clamping a brush head of a grill brush using a fixture
Data Source
AI summary
A method for wire bristle tuft attachment. The method includes clamping a brush head of a grill brush using a fixture, arranging a plurality of bristles to form a bristle grouping using a terminal, inserting the plurality of bristles in a recess in the brush head, and forming an irregular bend in the terminal by pressing the terminal into the recess by a press machine.