Foldable Hinge Arc-Shaped Sliding Groove Reliability
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Solution Overview
Problem
Current foldable display devices have hinges with low reliability due to the tendency of the arc-shaped plate to slide out of the arc-shaped sliding groove during unfolding, leading to the driving rod falling off the supporting base, which complicates the structure and reduces the device's reliability.
Innovation Solution
A hinge design featuring a supporting base with an arc-shaped sliding groove and flip parts connected to a rotating member, where the connecting portion is located within the groove, preventing the rotating member from falling off and enhancing reliability by ensuring proper alignment and stability during folding and unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the arc-shaped plate is used to drive the rotating member during unfolding, then the folding and unfolding function is achieved, but the arc-shaped plate tends to slide out of the arc-shaped sliding groove, causing the driving rod to fall off the supporting base
Solution Approach 1:
The hinge is divided into multiple independent components: supporting base, flip parts, rotating members, driving rods, and arc-shaped plates. Each component has a specific function and can be independently manufactured and assembled, allowing for better control over the movement and positioning of each part during folding and unfolding operations.
Solution Approach 2:
The arc-shaped sliding groove acts as an intermediary structure between the supporting base and the driving rod. This groove provides a guided path that mediates the movement of the driving rod, ensuring it stays properly positioned while still allowing the necessary folding and unfolding motion to occur.
2Adaptability or versatility
If the arc-shaped plate is allowed to move freely during unfolding, then the folding function is achieved, but the driving rod falls off the supporting base, complicating the structure
Solution Approach 1:
The arc-shaped sliding groove is integrated directly into the supporting base structure, combining the guidance function with the base itself. This merging eliminates the need for separate external guidance mechanisms, reducing overall structural complexity while maintaining the necessary folding capability.
Solution Approach 2:
The arc-shaped sliding groove uses a curved geometry that matches the movement path of the driving rod during folding and unfolding. This curved design allows the driving rod to follow a natural arc trajectory, enabling smooth folding motion without requiring complex linear guides or additional constraint mechanisms.
3Reliability
If the connecting portion is positioned within the arc-shaped sliding groove, then the rotating member is prevented from falling off, but the movement range may be restricted
Solution Approach 1:
The arc-shaped sliding groove is designed with specific geometric parameters (radius, arc length, depth) that are optimized to balance two requirements: providing enough constraint to prevent the driving rod from falling off while allowing sufficient movement range for complete folding and unfolding. By carefully adjusting these parameters, both reliability and movement range are satisfied.
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 proposed hinge design improves the reliability of foldable display devices by maintaining the arc-shaped plate within the groove, preventing structural complications and enhancing the stability and durability of the hinge mechanism.
Implementation Method 1
The supporting base has a first arc-shaped sliding groove, and a part of the first connecting portion is located in the first arc-shaped sliding groove
Data Source
AI summary
A hinge includes: a supporting base extending in a first direction; and at least two flip parts both rotatably connected to the supporting base. The at least two flip parts are configured to be distributed on two opposite sides of the supporting base in a second direction in case that the hinge is in an unfolded state, and the second direction intersects with the first direction. The flip part includes a first rotating member, and a first connecting portion connected to a first end of the first rotating member. The supporting base has a first arc-shaped sliding groove, and a part of the first connecting portion is located in the first arc-shaped sliding groove.