Automotive Tray Bead for Edge Safety and Mold Simplicity
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Solution Overview
Problem
Existing automotive interior equipment trays have sharp edges due to mineral fibers extending beyond the tray edges, making them unsafe to handle and requiring complex and costly manufacturing processes.
Innovation Solution
A tray design featuring a bead protruding from the under surface near the peripheral ridge, made from a mixture of polymeric and mineral materials with a spacer and exterior skin, allowing for a simpler and more user-friendly manufacturing method using a mold with a groove to form the bead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a coating layer with a peripheral tongue is added to cover sharp edges, then user safety is improved, but manufacturing complexity and tool wear increase
Solution Approach 1:
The harmful sharp edges are extracted and removed by cutting the tray to size after molding, eliminating the need for complex coating layers with peripheral tongues while maintaining user safety through proper edge finishing
Solution Approach 2:
The mold is designed with replaceable wear-resistant inserts for the groove formation, allowing the mold itself to be a cost-effective, replaceable component rather than requiring complex, expensive coating tools that wear out quickly
2Ease of operation
If a peripheral tongue is added to protrude from the sheet, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The gripping feature is merged into the bead structure that is already formed in the mold groove, combining the structural reinforcement function with the ergonomic gripping function in a single integrated feature rather than adding a separate peripheral tongue
Solution Approach 2:
The bead structure serves dual purposes: it reinforces the tray structure and automatically provides an ergonomic gripping surface, making the structure self-sufficient without requiring additional components
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 bead provides a comfortable gripping surface, enhancing user safety and reducing manufacturing complexity and costs while maintaining structural integrity.
Implementation Method 1
the bead plays the role of a lip that happens to fall back over the edges of the sheet when a user tries to grip the part which makes it possible for the user to avoid direct contact with any mineral fibers
Implementation Method 2
A known tray of the aforementioned type comprises of a composite body comprising a sheet of mineral fibers, for example glass fibers, embedded in a polymer matrix
Implementation Method 3
the formation of a bead in a groove of the mold, the bead protruding from the under surface in the vicinity of the peripheral ridge
Data Source
AI summary
An automotive interior equipment tray that defines a top surface, an under surface and a peripheral edge section extending between the under surface and the top surface over a contour of the tray. The peripheral edge section defines with the under surface a peripheral ridge. The tray includes a bead protruding from the under surface in the vicinity of the peripheral ridge.