Hinge Mechanism Tensioning for Foldable Device Wire Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Legacy hinge mechanisms in foldable electronic devices face issues with connector damage due to tight bend radii, pinching, and increased impedance, leading to reduced battery life and structural failures when repeatedly folded or unfolded.
Innovation Solution
The implementation of a hinge mechanism with tensioning mechanisms, such as spring-loaded or leaf spring tensioners, to manage wire slack and prevent crimping, combined with flexible printed circuits (FPCs) and wires that are physically positioned between the FPC and a stiffener for improved mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connectors are placed in legacy hinge mechanisms without tensioning mechanisms, then the device structure remains simple, but the connectors suffer from tight bend radii, pinching, and structural damage when repeatedly folded or unfolded
Solution Approach 1:
A tensioning mechanism is introduced as an intermediary component between the connector and the hinge structure. This tensioning mechanism manages wire slack and prevents crimping, thereby protecting the connector from structural damage while maintaining a relatively compact hinge design.
Solution Approach 2:
The hinge mechanism is divided into distinct functional segments: a hinge body, a connector, and a separate tensioning mechanism. This segmentation allows each component to perform its specific function independently, with the tensioning mechanism specifically addressing connector protection without complicating the overall hinge structure.
2Reliability
If connectors are repeatedly folded or unfolded without tensioning mechanisms, then the device maintains compact size, but impedance increases and battery life decreases due to connector damage
Solution Approach 1:
The tensioning mechanism serves as a protective intermediary that maintains proper tension on the connector wires during folding and unfolding operations. This prevents crimping and maintains low impedance in the power delivery path, ensuring stable power delivery and preserving battery life over repeated use cycles.
3Reliability
If wire slack is not managed in hinge mechanisms, then the mechanism remains simple, but wires become crimped and connectors suffer structural damage
Solution Approach 1:
The tensioning mechanism is designed to automatically manage wire slack through spring-loaded or leaf spring tensioners that self-adjust during hinge movement. The mechanism self-regulates wire tension without requiring external control systems, preventing crimping and maintaining connector integrity while adding minimal complexity.
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
This configuration enhances the mechanical life of connectors by preventing structural damage and maintaining low impedance in the power delivery path, allowing for repeated folding and unfolding without damage, while maintaining a compact device size.
Implementation Method 1
at least one elastic member arranged between the support portion and the link portion so as to provide elastic restoration power caused by rotation of the link portion
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Various embodiments relate to an electronic device with a first panel and a second panel coupled by a hinge mechanism. The electronic device may include a first wire that communicatively couples components of the first panel with components of the second panel. The wire may pass through the hinge mechanism, and be tensioned by a tensioning mechanism that provides tension to the first wire when the electronic device is in an open position and a closed position. Other embodiments may be described and/or claimed.