Foldable Display Hinge Mechanism for Accurate Waterdrop Folding
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Solution Overview
Problem
Existing hinge mechanisms for foldable electronic devices face challenges in movement control accuracy, affecting the overall reliability of the device due to insufficient space accommodation and support for flexible displays.
Innovation Solution
A hinge mechanism with a four-bar linkage mechanism design, incorporating first and second rotation modules, each comprising swing arms, support arms, housing supports, and connecting rods, to enhance movement accuracy and support for flexible displays, forming a water drop-like screen accommodating space in the folded state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the hinge mechanism provides sufficient space to accommodate the bent part of the flexible display in folded state, then the flexible display can be properly supported, but the movement control accuracy deteriorates
Solution Approach 1:
The hinge mechanism is divided into multiple independent rotation modules (first rotation module and second rotation module), each with its own swing arm, support arm, and connecting rod. This segmentation allows each module to independently control a portion of the door plate movement, improving overall movement control accuracy while providing sufficient accommodation space for the flexible display in folded state
Solution Approach 2:
The hinge mechanism employs dynamic rotation modules where the swing arms and support arms can rotate relative to the module bracket, and connecting rods dynamically adjust the position of door plates. This dynamic structure enables the mechanism to adapt to both the space accommodation requirement in folded state and the movement control accuracy requirement during operation
2Stability of the object's composition
If the hinge mechanism reliably supports the flexible display in unfolded state, then display stability is improved, but movement control accuracy deteriorates
Solution Approach 1:
The hinge mechanism merges the support function and movement control function into a unified rotation module structure. The swing arm, support arm, and connecting rod work together as an integrated system that simultaneously provides stable support for the flexible display in unfolded state and maintains movement control accuracy through coordinated rotation and sliding actions
Solution Approach 2:
The first and second rotation modules are asymmetrically arranged on opposite sides of the module bracket, with each module having specifically positioned swing arms and support arms. This asymmetric design allows each module to optimally support its respective door plate while maintaining precise movement control through the coordinated action of the connecting rods
Data Source
AI summary
A hinge mechanism and an electronic device, the hinge mechanism including a first rotation module, a second rotation module, and a module bracket. The first rotation module and the second rotation module are respectively disposed on two sides of the module bracket. The first rotation module includes a first swing arm, a first support arm, a first housing support, a first door plate, and a first connecting rod. The first door plate is configured to support a flexible display, and the first swing arm and the first support arm are disposed on a surface that is of the first door plate and that spaced apart from the flexible display, are distributed along a length direction of the hinge mechanism, and are separately rotatably connected to the module bracket.