Foldable Display Hinge Mechanism With Single-Stage Door Plate Linkage
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Solution Overview
Problem
Conventional rotating mechanisms in foldable electronic devices, such as foldable screen mobile phones, have complex structures and poor reliability due to multi-stage transmissions, leading to instability and reduced motion precision.
Innovation Solution
A rotating mechanism with a single-stage transmission design using a first and second rotating door plate, supported by a primary shaft, and a synchronous damping member, ensuring synchronized movement and improved structural integrity, stability, and support for flexible displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-stage transmission is used in the rotating mechanism, then the rotation of two housings can be implemented, but the structure becomes complex and reliability deteriorates
Solution Approach 1:
The patent extracts and eliminates the intermediate transmission stages from the rotating mechanism, directly connecting the door plates to the primary shaft. This removes unnecessary transmission components while preserving the essential rotation function, thereby simplifying the structure and improving reliability without sacrificing adaptability
Solution Approach 2:
Instead of using multiple transmission stages to achieve rotation, the patent inverts the approach by using a single-stage direct connection. The door plates are directly mounted on the primary shaft, reversing the conventional multi-stage design and achieving both simplicity and rotational functionality
2Adaptability or versatility
If a multi-stage transmission is used in the rotating mechanism, then the rotation function is achieved, but motion precision deteriorates
Solution Approach 1:
The patent removes intermediate transmission stages that introduce cumulative errors and play effects. By directly connecting the door plates to the primary shaft, the system eliminates sources of motion precision degradation while maintaining the necessary rotation function
Solution Approach 2:
The patent inverts the conventional approach by using direct connection instead of multi-stage transmission. This single-stage design reduces transmission errors and improves motion precision while still achieving the required rotation function
3Measurement precision
If a single-stage transmission is used, then motion precision is improved, but structural complexity is reduced
Solution Approach 1:
The patent extracts unnecessary intermediate transmission components, leaving only the essential direct connection between door plates and primary shaft. This reduction in components simultaneously simplifies structure and improves motion precision by eliminating transmission errors
Solution Approach 2:
The patent inverts the conventional multi-stage design by implementing direct connection. This single-stage approach naturally simplifies the transmission structure while improving motion precision, resolving the apparent contradiction between simplicity and precision
4Adaptability or versatility
If conventional rotating mechanism is used, then the folding function is achieved, but reliability deteriorates due to complex structure
Solution Approach 1:
The patent removes intermediate transmission stages and complex components from the folding mechanism, retaining only the essential direct connection between door plates and primary shaft. This reduction in components eliminates potential failure points while preserving the folding function, thereby improving reliability
Solution Approach 2:
The patent inverts the conventional complex multi-stage design by using direct connection. This simplification reduces the number of moving parts and connection points, thereby improving reliability while maintaining the folding function
Data Source
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AI summary
This application provides a rotating mechanism and an electronic device. The rotating mechanism includes a first housing connecting rod, a second housing connecting rod, a primary shaft, a first rotating door plate, a second rotating door plate, and a door plate swing arm. The first rotating door plate and the second rotating door plate are separately fixedly connected to the door plate swing arm. The door plate swing arm is rotatably connected to the primary shaft. The door plate swing arm is movably connected to the first housing, and the door plate swing arm is movably connected to the second housing. The first rotating door plate and the second rotating door plate are configured to support a bending portion of the flexible display screen in a flattened state. In a folded state, the first rotating door plate and the second rotating door plate form a screen accommodating space for accommodating the bending portion of the flexible display screen. This application can improve motion precision of the first rotating door plate and the second rotating door plate, and ensure stability and reliability of the electronic device.