180° Hinge With U-Shaped Intermediary Element
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Solution Overview
Problem
Conventional hinges that allow 180° movement project parts against each other when closed, posing safety and aesthetic issues, particularly in applications like camping van doors, and do not maintain apparent continuity between parts.
Innovation Solution
A hinge design featuring a U-shaped intermediate element with articulations at its ends, shielded by surface extensions, and covering appendices that maintain apparent continuity and provide a seal in the closed position, allowing 180° movement without projecting parts, and optionally including cross members to maintain distance between parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional hinge is used to allow 180° movement, then the moving part can rotate freely, but parts project against each other in the closed position creating safety hazards and aesthetic issues
Solution Approach 1:
A U-shaped intermediate element is introduced between the fixed part and the moving part. This intermediary component allows the 180° rotation to occur without the parts directly contacting each other, eliminating the projecting parts problem while maintaining the full rotation capability.
Solution Approach 2:
The hinge mechanism transitions from a simple planar articulation to a three-dimensional configuration using the U-shaped element. The cross-member of the U-shaped element extends in a direction perpendicular to the plane of rotation, allowing the moving part to clear the fixed part during rotation and eliminating projections in the closed position.
2Object-affected harmful factors
If a hinge allows 180° movement without projecting parts, then safety and aesthetics are improved, but the structure becomes more complex
Solution Approach 1:
The U-shaped intermediate element serves multiple functions simultaneously: it acts as a structural connector between parts, provides the articulation mechanism for 180° rotation, eliminates projecting parts through its geometry, and maintains apparent continuity between surfaces. This multi-functionality reduces the need for additional separate components.
3Shape
If the moving part is brought completely against the fixed part in closed position, then apparent continuity is achieved, but the hinge cannot allow 180° movement without projections
Solution Approach 1:
The covering appendices are designed to nest together or abut against each other in the closed position, creating apparent continuity between the fixed and moving parts. The U-shaped intermediate element is positioned such that its arms are contained within the space defined by the appendices, allowing both continuity and 180° movement.
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~3C
AI summary
An intermediate element (7), interposed between the two parts (P1 , A1) extends in the shape of a U with two articulations for pins (9, 11) at the two ends of the arms (7B, 7C) of said U-shaped element (7); the component (1 ; 3) fitted to the corresponding part (P1 , A1) is articulated to each of said articulation pins (9, 11).