Foldable Display Hinge Mechanism With Radial Rotating Arms
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Solution Overview
Problem
Existing hinge mechanisms in foldable electronic devices suffer from structural reliability issues due to thin components designed to avoid pulling or squeezing on flexible displays, limiting their structural strength and overall reliability.
Innovation Solution
A hinge mechanism with a base and rotating modules, including first and second rotating assemblies, where radial rotating arms with avoidance openings and connection surfaces rotate away from the flexible display, allowing for adjustable thickness and enhanced structural strength, while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If components of the rotating assembly are thinned to avoid pulling or squeezing on the flexible display, then the flexible display is protected from damage, but the structural strength and reliability of the hinge mechanism deteriorates
Solution Approach 1:
The patent introduces a radial rotating arm that rotates in a radial direction perpendicular to the main folding plane. This adds a dimensional element to the hinge mechanism, allowing the connection between swing arms and housing fastening brackets to occur in a different spatial dimension. The radial rotation enables the components to connect without interfering with the flexible display while maintaining sufficient thickness for structural strength.
Solution Approach 2:
The rotating assembly is segmented into multiple functional components: swing arms for main rotation, radial rotating arms for radial connection, and housing fastening brackets for mounting. This segmentation allows each component to be optimized independently - the radial rotating arm can be designed with sufficient thickness for strength while the overall mechanism maintains compact dimensions to protect the flexible display.
2Weight of moving object
If the hinge mechanism is miniaturized to reduce size and weight, then the device becomes more compact and portable, but the structural strength and reliability of the components deteriorates
Solution Approach 1:
By utilizing radial rotation in addition to the main folding rotation, the mechanism achieves compact dimensions in the primary folding plane while distributing structural strength across multiple dimensions. The radial rotating arm provides structural reinforcement without increasing the overall footprint of the hinge mechanism.
Solution Approach 2:
The patent employs multiple materials with different properties in the hinge mechanism - metallic materials for structural components requiring strength (radial rotating arm, swing arms) and potentially lighter materials for other components. This composite approach allows miniaturization while maintaining sufficient structural strength through strategic material selection.
Data Source
AI summary
The hinge mechanism includes a base and a rotating module, where the rotating module includes two rotating assemblies that are respectively disposed on two opposite sides of the base. Each rotating assembly includes a swing arm, a housing fastening bracket, a radial rotating arm, and a support arm. The swing arm is rotatably connected to the base, the radial rotating arm is located between the swing arm and the housing fastening bracket, the radial rotating arm is rotatably connected to the swing arm and the housing fastening bracket separately, and a rotation axis of the radial rotating arm extends in a direction in which the housing fastening bracket moves toward or away from the base. The support arm is rotatably connected to the base and is slidably connected to the housing fastening bracket.