Double-Shaft Mechanism for 360-Degree Foldable Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional foldable display devices are limited by a critical radius of curvature that can cause damage when folded, and they cannot be folded 360 degrees, restricting their portability and usability.
Innovation Solution
A foldable display device with a flexible display screen and a support back plate featuring a double-shaft articulated mechanism and a tension releasing mechanism, including slider-traveller assemblies, allows for 360-degree turning and secure fixation at any angle, using a protective jacket made of flexible materials like leather or plastic to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the flexible display screen is folded with a small radius of curvature, then the device can be folded more compactly, but the flexible display screen may be damaged
Solution Approach 1:
The support back plate is divided into multiple rigid support plates (first support plate, second support plate, third support plate) connected by articulated mechanisms. This segmentation allows the back plate to flex in a controlled manner with a larger effective radius of curvature, protecting the screen while enabling compact folding.
Solution Approach 2:
The double-shaft articulated mechanism acts as an intermediary between the rigid support plates and the flexible display screen. It includes a tension releasing mechanism with slider-traveller assembles that mediate the folding motion, ensuring the screen is never subjected to damaging small-radius bending while still allowing compact folding.
2Device complexity
If the foldable display device is limited to 180-degree folding, then the structure is simpler, but the portability and usability are restricted
Solution Approach 1:
The articulated mechanism is designed to be dynamic rather than fixed, allowing the support plates to rotate relative to each other through the double-shaft articulated mechanisms. This enables the device to fold beyond 180 degrees (achieving 360-degree folding) while maintaining structural integrity through the tension releasing mechanism that adapts to different folding angles.
3Ease of operation
If the flexible display screen is folded repeatedly, then the device becomes more portable, but the screen may accumulate damage
Solution Approach 1:
The rigid support plates and articulated mechanisms provide beforehand cushioning by distributing and controlling the stresses during folding. The tension releasing mechanism prevents excessive tension from accumulating in the flexible display screen during repeated folding cycles, thereby protecting the screen and extending its durability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables 360-degree folding without damaging the flexible display screen and allows it to be fixed at any angle for operation, enhancing portability and usability while protecting the screen from damage.
Implementation Method 1
The first rotation shaft is frictionally engaged with the first support plate and the second rotation shaft is frictionally engaged with the second support plate
Implementation Method 2
the traveller is slidable in the slider
Data Source
AI summary
A foldable display device includes a flexible display screen and a support back plate fitted to the flexible display screen. The support back plate includes a first support plate and a second support plate that is articulated with the first support plate by a double-shaft articulated mechanism. The double-shaft articulated mechanism includes a first rotation shaft pivotally coupled to the first support plate, a second rotation shaft pivotally coupled to the second support plate and a tension releasing mechanism provided between the first rotation shaft and the second rotation shaft.