Rotating Shaft Assembly With Limit Structure for Folded Screen Flatness
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Solution Overview
Problem
Existing rotating shaft assemblies in foldable terminals suffer from gaps between parts, causing panel floating and poor flatness of flexible screens, which affects light and shadow effects.
Innovation Solution
A rotating shaft assembly with a limit part that abuts against the swing arm, preventing floating and ensuring panel flatness by using a surface contact mechanism, and a limit structure that supports the panel in the fully unfolded state to prevent collapse, along with a positioning system for reliable connection and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotating shaft assembly with multiple movable parts is used to enable folding rotation, then the foldable terminal can achieve folding functionality, but gaps between parts cause panel floating and poor flatness
Solution Approach 1:
A limit part is introduced as an intermediary component between the swing arm and support structure. This limit part includes a second limit portion that abuts against the first limit portion of the swing arm to prevent excessive movement and panel floating, while not interfering with normal folding rotation operations
Solution Approach 2:
The patent modifies the structural parameters by adding limit portions with specific geometric configurations. The first limit portion on the swing arm and second limit portion on the limit part create a mechanical constraint system that changes the movement parameters of the panel, preventing floating while maintaining folding capability
2Manufacturing precision
If limit parts are added to prevent panel floating, then panel flatness is improved, but device complexity increases
Solution Approach 1:
The limit part is integrated with the existing support structure, and the limit portions are incorporated into the swing arm and limit part designs. This merging approach adds the necessary constraint function without creating entirely separate independent components, thereby reducing overall structural complexity
Solution Approach 2:
The limit portions are strategically positioned at specific locations where they are needed to prevent panel floating, rather than adding constraints throughout the entire structure. This localized approach ensures panel flatness is improved only where necessary, minimizing unnecessary structural additions
Data Source
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AI summary
This application provides a rotating shaft assembly and an electronic device, where the rotating shaft assembly includes a panel and a rotatable support mechanism. The rotatable support mechanism includes a swing arm, a fixed structure, a limit part, and a support structure. The support structure is provided with a mounting plane, and the panel is fastened to the mounting plane; a first limit portion is formed on the swing arm; and the limit part is connected to the support structure, and a second limit portion is formed on the limit part. When the screen is in a folded state, the limit part is separated from the swing arm. When the screen is in an unfolded state, the second limit portion of the limit part can abut against the first limit portion of the swing arm, thereby implementing mutual constraint between the swing arm and the support structure. This effectively prevents the swing arm and the support structure from floating due to existence of the gap, and allows the support structure to stably support the panel, thereby ensuring flatness of the panel in the unfolded state and light and shadow effect of the screen.