Hinge Assembly with Nesting Convex-Concave Edges for Lid Positioning
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Solution Overview
Problem
Conventional hinge assemblies for insulated containers lack enhanced performance and cost-effectiveness in terms of strength, motion control, and durability, particularly in maintaining the lid's open and closed positions.
Innovation Solution
A hinge assembly comprising inter-fitting first and second hinge halves with convex and concave edge portions, respectively, that pivot between flattened and folded positions, providing a positive stop mechanism and snap-like latching action, utilizing self-lubricating, non-corrosive acetal plastic and stainless steel components for improved strength and UV protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional hinge assemblies are used for insulated containers, then basic lid connection functionality is achieved, but strength, motion control, and durability are insufficient
Solution Approach 1:
The hinge assembly is divided into two separate hinge halves that can pivot relative to each other. This segmentation allows each half to be optimized for specific functions: one half provides structural strength while the other enables controlled motion and positive stop positioning, resolving the contradiction between strength and positioning reliability.
Solution Approach 2:
The hinge assembly transitions from a static rigid connection to a dynamic system with controlled movement. The hinge halves can pivot between flattened and folded positions, providing motion control and positive stop functionality that enhances lid positioning reliability while maintaining structural strength through the inter-fitting convex and concave geometries.
2Ease of operation
If hinge halves pivot between flattened and folded positions, then controlled motion and positive stop functionality are achieved, but device complexity increases
Solution Approach 1:
The hinge halves feature inter-fitting convex and concave geometries that nest together in the folded position. This nesting provides the positive stop mechanism and motion control without requiring additional separate components, thereby achieving ease of operation while minimizing the increase in device complexity.
Solution Approach 2:
Multiple functions are merged into the hinge assembly structure itself: the convex and concave geometries simultaneously provide the positive stop mechanism, motion control, and structural connection. This integration achieves controlled lid motion without adding separate complex mechanisms.
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 hinge assembly achieves high strength, controlled motion, and self-resting positive stop functionality, ensuring secure lid positioning with reduced pressure on fasteners and enhanced durability, suitable for various container models and manufacturers.
Implementation Method 1
utilizing self-lubricating, non-corrosive acetal plastic and stainless steel components
Data Source
AI summary
A hinge assembly for pivotally connecting a lid to a receptacle of a container, comprises a first hinge half including a convex edge portion, and a second hinge half pivotally connected to the first hinge half for pivotable movement between a flattened position and a folded position of the hinge assembly. The second hinge half includes a concave nesting depression nestably engaging the convex edge portion of the first hinge half in the folded position of the hinge assembly.