Foldable Display Support Structure With Synchronized Hinge Rotation
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Solution Overview
Problem
Current foldable electronic devices suffer from poor synchronization and symmetry between left and right housings, leading to potential damage and reduced reliability.
Innovation Solution
A folding mechanism with a synchronization assembly comprising a first and second connecting shaft, synchronization swing arms, and sliding grooves and blocks, ensuring synchronized rotation of screen supporting plates, and a support structure with symmetric housing seats and rotating parts for stable connection and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If independent rotation mechanisms are used for left and right housings, then device complexity is reduced, but synchronization and symmetry between housings deteriorate
Solution Approach 1:
The patent merges the rotation control of left and right housings by connecting them through a shared synchronization mechanism. The first and second housing seats are both rotatably connected to the base, and their rotation is coordinated through the synchronization assembly including connecting shafts and swing arms, ensuring synchronized movement while maintaining relatively simple individual components.
Solution Approach 2:
The patent introduces a synchronization assembly as an intermediary mechanism between the left and right housings. This assembly includes connecting shafts, swing arms, and sliding blocks that mediate the rotation between housing seats, ensuring they move synchronously without requiring complex integrated control systems.
2Reliability
If synchronization assembly with multiple components is added, then synchronization between housings is improved, but device complexity increases
Solution Approach 1:
The synchronization assembly is segmented into distinct functional components: connecting shafts for rotation transmission, swing arms for motion conversion, and sliding blocks for positioning. Each component has a specific function, allowing the system to achieve complex synchronized motion through simple, manageable parts rather than a monolithic complex mechanism.
Solution Approach 2:
The synchronization assembly utilizes dynamic elements including rotating connecting shafts, oscillating swing arms, and sliding blocks that move along grooves. These dynamic components work together to coordinate the rotation of housing seats, providing flexible synchronization control through mechanical motion rather than rigid fixed connections.
3Reliability
If spiral sliding grooves are used in synchronization arms, then rotational synchronization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs spiral (curved) sliding grooves in the synchronization arms instead of straight grooves. This curved geometry naturally guides the sliding blocks through a rotational path, converting linear sliding motion into rotational synchronization. The spiral shape provides self-aligning characteristics that reduce the impact of manufacturing tolerances compared to precision straight grooves requiring exact angular positioning.
Data Source
AI summary
A folding mechanism, a support structure and an electronic device are provided. The folding mechanism includes a first screen supporting plate, a second screen supporting plate, a first housing seat provided on the first screen supporting plate, a second housing seat provided on the second screen supporting plate, a base and a synchronization assembly. Both the first housing seat and the second housing seat are rotatably connected to the base. In the synchronization assembly, along a rotation direction, a first synchronization swing arm is in limiting fit with a first connecting shaft, and a second synchronization swing arm is in limiting fit with a second connecting shaft.