Foldable Terminal Hinge Mechanism With Sliding Support Limit
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Solution Overview
Problem
Current rotating shaft mechanisms for foldable terminal devices, such as foldable mobile phones, suffer from structural instability and a high risk of damaging the flexible screen during folding and unfolding processes.
Innovation Solution
A rotating shaft mechanism is designed with a main bracket and at least one rotating assembly, featuring a limiting structure to control the maximum stroke of rotation. This mechanism includes a rotating member with arc structures, a middle frame, and a sliding member, allowing for stable support and reduced risk of screen damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flexible screen slides on a structural member during folding, then the rotating shaft mechanism can achieve folding motion, but the structure becomes unstable and the flexible screen may slide or squeeze
Solution Approach 1:
The rotating shaft mechanism is divided into multiple independent components: a rotating member with arc structures, a middle frame, and a sliding member. This segmentation allows each component to perform its specific function while maintaining overall structural stability during folding operations
Solution Approach 2:
The sliding member acts as an intermediary between the rotating member and the middle frame, controlling the relative motion and preventing direct sliding or squeezing of the flexible screen. The limiting structure also serves as an intermediary to constrain the maximum stroke of rotation
2Stability of the object's composition
If the flexible screen is fixed relative to a structural member, then the structure is stable, but the rotating shaft mechanism becomes complex and prone to damaging the flexible screen
Solution Approach 1:
The mechanism uses dynamic elements including arc structures that guide motion paths and a sliding member that enables controlled relative movement between the rotating member and middle frame. This dynamic design maintains stability while reducing complexity compared to fully fixed configurations
Solution Approach 2:
The arc structures change the geometric parameters of the connection between components, allowing smooth rotation while the sliding member adjusts the relative position parameters. This enables the mechanism to adapt during folding without requiring complex fixed constraints
3Adaptability or versatility
If the rotating shaft mechanism lacks a limiting structure, then the folding range is larger, but the maximum stroke of rotation cannot be controlled and screen damage risk increases
Solution Approach 1:
The limiting structure is designed in advance to prevent excessive rotation before it can cause screen damage. By pre-establishing the maximum stroke constraint, the mechanism protects the flexible screen while still allowing sufficient folding range for practical use
Data Source
AI summary
A rotating shaft mechanism is disclosed. The rotating shaft mechanism includes a main bracket and at least one rotating assembly. Each rotating assembly can rotate relative to the main bracket. The rotating assembly includes a rotating member, a middle frame, and a sliding member. The rotating member can be rotatably connected to the main bracket about the first rotation center, and the other end of the rotating member can be rotatably connected to the middle frame about the third rotation center. One end of the sliding member is hinged to the main bracket, and the sliding member can rotate relative to the main bracket about the second rotation center. The other end of the sliding member slidably coordinates with the middle frame, so that the middle frame is away from or close to the second rotation center along an extension direction of the sliding member.