Foldable Hinge Linkage for Constant Flexible Screen Length
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In foldable devices with flexible screens, existing rotating shaft connection mechanisms fail to maintain the screen's length unchanged during unfolding or folding, leading to potential damage.
Innovation Solution
A rotating shaft connection mechanism comprising two rotating shafts, a synchronous driving block, and connection assemblies with slide rail blocks and drive sheets, which convert rotational motion into sliding motion to accommodate the screen's bending area, ensuring the screen's length remains constant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional rotating shaft connection mechanism is used, then the device can be folded, but the screen length changes during folding/unfolding causing potential damage
Solution Approach 1:
The connection mechanism uses dynamic components including rotating shafts that can rotate, drive sheets that can slide, and slide rail blocks that move along rails. These dynamic elements work together to maintain constant screen length while enabling folding capability, resolving the contradiction between adaptability and reliability
Solution Approach 2:
The mechanism changes the operational parameters of the connection components during folding/unfolding. The rotating shafts rotate through specific angles, the drive sheets slide to adjust positions, and the slide rail blocks move to accommodate length changes, all while maintaining the screen length parameter constant to prevent damage
2Reliability
If the rotating shaft connection mechanism is added to maintain screen length, then screen integrity is improved, but the device complexity increases
Solution Approach 1:
The connection mechanism is segmented into independent functional modules: rotating shafts for rotation, drive sheets for sliding motion, slide rail blocks for constrained movement, and synchronous driving blocks for coordination. This segmentation allows each component to perform its specific function while maintaining overall simplicity and reliability
Solution Approach 2:
The drive sheet acts as an intermediary component that translates the rotation of the rotating shaft into linear sliding motion of the slide rail block. This intermediary mechanism efficiently converts motion types while maintaining screen length constant, adding minimal complexity while ensuring screen integrity
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
This mechanism effectively maintains the screen's length unchanged during folding and unfolding, improving user experience by reducing relative errors and resistance, and enhancing the device's precision and anti-twisting performance.
Implementation Method 1
The synchronous driving block is provided with a positioning protrusion part adapted to be inserted into the spiral groove of each rotating shaft
Implementation Method 2
the drive sheet is provided with a slanting groove adapted to enable the boss of the slide rail block to be inserted
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
This application provides a rotating shaft connection mechanism. The rotating shaft connection mechanism includes two rotating shafts, two connection assemblies corresponding to the two rotating shafts, and one synchronous driving block, where each connection assembly includes a slide rail block and a drive sheet, a boss of the slide rail block is inserted into a slanting groove on the drive sheet, the synchronous driving block is connected to the two rotating shafts, and the synchronous driving block is disposed on two sides of a connecting piece on the drive sheet by using provided connecting pieces, and is inserted into a spiral groove by using a provided positioning protrusion part. In this way, through fitting connection between the two rotating shafts, the one synchronous driving block and the slide rail blocks and drive sheets of the two connection assemblies corresponding to the two rotating shafts, rotation of the rotating shaft is converted into sliding of the slide rail block. When the rotating shaft connection mechanism is disposed on a device with a flexible screen, the device is enabled to slide in a direction towards the rotating shaft or away from the rotating shaft, thereby effectively ensuring that a length of the flexible screen remains unchanged during folding or unfolding of the flexible screen.