Foldable Display Hinge Synchronization With Slider-Guided Swing Arms
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Solution Overview
Problem
Electronic devices with flexible displays face synchronization deviations during unfolding or folding due to frame misalignment, leading to a poor user experience.
Innovation Solution
A hinge apparatus with a shaft cover, bases, and swing arm assemblies, featuring synchronous sliders and adapter parts, ensures synchronized movement of frames by using helical surfaces and limiting guide tracks to maintain frame alignment during folding and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a foldable structure with two frames is used to increase display area, then the display area is increased, but synchronization deviation occurs during rotating process
Solution Approach 1:
A synchronous slider is introduced as an intermediary component between the two swing arm assemblies. The slider includes a first synchronous groove and a second synchronous groove that guide the movement of first and second synchronous blocks respectively. These blocks are connected through a connecting component, ensuring that when one swing arm rotates, the other swing arm rotates synchronously through the mechanical coupling provided by the slider and connecting component.
Solution Approach 2:
The hinge apparatus is divided into independent modular components: two swing arm assemblies, a synchronous slider, and a connecting component. Each swing arm assembly can be manufactured and assembled separately, then connected through the standardized interface of the synchronous slider and connecting component, facilitating modular manufacturing while ensuring synchronization.
2Adaptability or versatility
If swing arm assemblies are rotatably connected to bases, then the folding function is achieved, but frame alignment and synchronization are difficult to maintain
Solution Approach 1:
The synchronous slider and connecting component are pre-configured with grooves and guide structures that establish the correct geometric relationship between the two swing arms before operation. The grooves are designed with specific shapes and orientations that automatically guide the swing arms into proper alignment during rotation, ensuring frame alignment is maintained throughout the folding process without requiring active control.
Data Source
AI summary
Embodiments of this application provide a hinge apparatus. a shaft cover, including accommodation recess parts; bases, disposed in the accommodation recess parts, where each base includes relief spaces and first adapter parts, the first adapter parts face the relief spaces, the base includes a synchronous slider and a limiting guide track, the limiting guide track is connected to the shaft cover, the limiting guide track is disposed at a side that is of the synchronous slider and that faces away from the shaft cover, and the synchronous slider is slidably connected to the limiting guide track; and swing arm assemblies, each including swing arm bodies and second adapter parts. A connection end of each swing arm body is close to the base. A free end of the swing arm body is away from the base. At least part of the connection end is located in the relief space.