Trace Configuration Calculation for Hinge Reliability
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Solution Overview
Problem
Conventional portable electronic apparatus designs face issues where the trace disposed through the hinge's trace space is squeezed or broken when the space becomes smaller with rotation, affecting the service life and reliability of the trace.
Innovation Solution
A trace configuration calculating method that determines the optimal center and maximum diameter of the trace by calculating the maximum inscribed circle from the intersection area formed by overlapping contour cross-sections at different rotating angles, ensuring the trace is positioned at the optimal center with the maximum diameter within the trace space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the trace is disposed through the trace space in the hinge to reduce space occupation, then the space occupied by the trace is reduced, but the trace may be squeezed or broken when the trace space becomes smaller with rotation of the hinge
Solution Approach 1:
The patent applies preliminary action by pre-calculating the optimal trace configuration before the hinge assembly is manufactured. The method involves obtaining contour cross-sections of the trace space at different rotating angles, determining the intersection area, and calculating the maximum inscribed circle to establish the optimal center and diameter of the trace. This preliminary design ensures the trace is positioned optimally before any rotation occurs, preventing squeezing or breaking during subsequent hinge rotation while minimizing space occupation.
2Volume of moving object
If the trace is disposed through the trace space in the hinge, then the space occupied by the trace is reduced, but the trace configuration must be optimized to prevent squeezing or breaking
Solution Approach 1:
The patent replaces complex mechanical trial-and-error methods with a computational geometry approach. Instead of physically testing different trace configurations, the method uses mathematical calculations to determine the optimal trace position and size. The process substitutes mechanical experimentation with algorithmic computation: obtaining contour cross-sections, calculating intersection areas, and determining maximum inscribed circles through mathematical operations, thereby reducing device complexity while achieving optimal trace configuration.
3Volume of moving object
If the trace space becomes smaller with rotation of the hinge, then the compactness is improved, but the trace may be squeezed or broken
Solution Approach 1:
The patent applies local quality by determining the optimal trace configuration based on the specific geometric characteristics of the trace space at different rotating angles. The method calculates the intersection area of contour cross-sections and identifies the maximum inscribed circle within this intersection, ensuring the trace is positioned in the region with sufficient clearance throughout rotation. This localized optimization ensures the trace maintains adequate space in critical areas while allowing the overall hinge to achieve compactness during rotation.
Data Source
AI summary
A trace configuration calculating method is applied to pivotal connection of a first workpiece and a hinge. A first trace space is formed at a position where the hinge is pivoted to the first workpiece. A first trace is disposed through the first trace space. The trace configuration calculating method includes the hinge and the first workpiece rotating first and second angles to make the first trace space have first and second contour cross-sections respectively, overlapping the first and second contour cross-sections to form a first intersection area, calculating a first maximum inscribed circle according to the first intersection area, and determining a first optimal center and a first maximum diameter of the first trace according to the first maximum inscribed circle.