Inner-Folding Screen Hinge Mechanism for Stable Large-Stroke Motion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large-size inner-folding flexible screen terminals face issues with smooth movement and shaking during folding and unfolding due to their large movement stroke, making it difficult to design and manufacture a smooth and stable mechanism.
Innovation Solution
A movement mechanism featuring an intermediate support structure with a flexible screen support surface, connected to left and right-side support frames through a synchronous reverse rotation connection mechanism, utilizing rotation and sliding connections with pressing structures to prevent rotation and shaking, and supported by movable plates for stable unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a large movement stroke is used to enable folding of large-sized flexible screen terminal, then the folding function is achieved, but the casing easily gets stuck and shaking occurs
Solution Approach 1:
The rotation connection structure is divided into multiple segments (first rotation connection structure and second rotation connection structure) with different rotation radii. This segmentation allows the casing to move through a large overall stroke while each segment operates within a controlled range, preventing getting stuck and reducing shaking.
Solution Approach 2:
The patent uses arc-shaped guide rails with different radii to create curved movement paths. The first arc-shaped guide rail has a first rotation radius, and the second arc-shaped guide rail has a second rotation radius. This curved path design enables smooth transitions during folding/unfolding, eliminating shaking and preventing the casing from getting stuck.
2Reliability
If traditional sliding structure is used for protection during folding, then screen protection is improved, but the structure gets stuck due to large movement stroke
Solution Approach 1:
The patent transitions from a static sliding structure to a dynamic rotation connection structure. The connecting member rotates dynamically through two different rotation centers during the folding process, allowing adaptive movement that maintains screen protection while ensuring smooth operation without getting stuck.
Solution Approach 2:
The rotation connection structure acts as an intermediary mechanism between the first and second casings. It includes a connecting member with rotation connections to both casings, mediating the movement to provide protection while enabling smooth folding and unfolding without the getting stuck issue.
3Device complexity
If single rotation center is used for connection, then structure is simple, but shaking occurs during movement
Solution Approach 1:
The single rotation center is segmented into two rotation centers (first rotation center and second rotation center) with different radii. This segmentation stabilizes the casing by distributing the rotation across multiple centers, preventing shaking while maintaining reasonable structural complexity.
Solution Approach 2:
The patent adds a dimensional aspect to the rotation connection by using two different rotation radii. The first arc-shaped guide rail and second arc-shaped guide rail create a multi-dimensional rotation path, which stabilizes the casing during movement and eliminates shaking.
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
The mechanism ensures smooth and stable movement of the flexible screen terminal by preventing rotation and shaking, reducing the risk of getting stuck during operation and maintaining a stable unfolded state.
Implementation Method 1
arc guide rail and arc sliding block rotation connection structure
Implementation Method 2
pressing structures of the left-side rotation connection structure and the right-side rotation connection structure... pressing directions are radial directions
Implementation Method 3
pressing structures adopt pressing block and spring support structures
Data Source
AI summary
A movement mechanism applied to an inner-folding flexible screen terminal, comprising an intermediate support structure, the intermediate support structure being provided with a flexible screen support surface, a left-side rotation connection structure and a right-side rotation connection structure, a left-side connecting member and a right-side connecting member; inner ends of the left-side rotation connection structure and the right-side rotation connection structure are both rotatably connected to the intermediate support structure, the left-side connecting member and the right-side connecting member are respectively rotatably connected to outer ends of the left-side rotation connection structure and the right-side rotation connection structure, and the left-side connecting member and the right-side connecting member are respectively slidably connected to a left-side support frame and a right-side support frame. By means of the pressing of a pressing structure to the rotation structure, when a flexible screen mobile terminal is unfolded, the left and right casings can be prevented from rotating and shaking, and the unfolded state is stably maintained; and it is suitable for adopting multiple segments of rotation structures to cooperate with the pressing structure, thereby reducing the risk of getting stuck during rotation.