Coupling Assembly Structure for Wrinkle-Free Foldable Screens
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Solution Overview
Problem
Existing coupling assemblies in foldable devices face challenges in maintaining structural stability and functionality, leading to issues such as deformation, wrinkles, and reduced service life due to inadequate space management during folding and unfolding.
Innovation Solution
A coupling assembly with opposing threaded shaft sleeves and connection rods that allow for relative rotation and sliding, enabling adjustable distances and angles to manage space effectively, using basic components like screw rods, shaft sleeves, and connection rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional pivot or hinge structures are used to connect two separate parts in foldable devices, then the device can achieve folded and unfolded states, but the flexible structure may experience deformation, wrinkles, and reduced service life due to inadequate space management during folding and unfolding
Solution Approach 1:
The coupling assembly employs dynamic adjustment mechanisms where the distance between the first and second connection rods can be adjusted during folding and unfolding processes. The shaft sleeves can rotate relative to the screw rod, and the connection rods can slide along the shaft sleeves, enabling the structure to dynamically adapt to different spatial requirements during movement, thereby preventing deformation and wrinkles while maintaining structural stability
Solution Approach 2:
The coupling assembly is divided into multiple independent components: a screw rod, a holder with a first shaft sleeve fixed to it, a second shaft sleeve that can rotate on the screw rod, first and second connection rods that can slide along the shaft sleeves, and a synchronizing member. This segmentation allows each component to perform its specific function independently, contributing to overall structural stability while enabling the required folding and unfolding movements
2Adaptability or versatility
If the distance between connection rods is fixed in traditional coupling assemblies, then the structure is simple, but the flexible structure cannot adapt to space changes during folding and unfolding, leading to deformation and wrinkles
Solution Approach 1:
The coupling assembly incorporates dynamic adjustment capabilities through the sliding connection rods and rotatable shaft sleeves. The first connection rod can slide along the first shaft sleeve, and the second connection rod can slide along the second shaft sleeve, allowing the distance between connection rods to dynamically adjust during folding and unfolding, thereby adapting to space changes without increasing overall structural complexity
Solution Approach 2:
The shaft sleeves act as intermediary components between the screw rod and the connection rods. The first shaft sleeve is fixed to the screw rod, while the second shaft sleeve can rotate on the screw rod. These intermediary elements enable the connection rods to adjust their positions and distances in response to spatial requirements during folding and unfolding, without requiring direct complex mechanisms between the screw rod and connection rods
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 solution provides stable, wrinkle-free folding and unfolding of foldable screens by managing space efficiently, prolonging the service life and enhancing user experience.
Implementation Method 1
a screw rod; a holder mounted on the screw rod; a shaft sleeve set including a first shaft sleeve and a second shaft sleeve, in which at least part of the screw rod is located in the first shaft sleeve, the second shaft sleeve is fitted over the screw rod at an outer side
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A coupling assembly includes: a screw rod (20); a holder (10) mounted on the screw rod (20); a shaft sleeve set and a connection rod set. The shaft sleeve set includes: a first shaft sleeve (30) embedded in the holder (10); and a second shaft sleeve (40) fitted over the screw rod (20) at an outer side and slidable on the screw rod (20). The connection rod set includes: a first connection rod (50) having an end fixedly coupled to the first shaft sleeve (30); and a second connection rod (60) having an end fixedly coupled to the second shaft sleeve (40), the second connection rod (60) and the first connection rod (50) crossing and being coupled at a junction. The first connection rod (50) and the second connection rod (60) cross to form an angle.