Spiral Guiding Dual-Axis Hinge for Foldable Screens
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Solution Overview
Problem
Conventional foldable phone hinges are heavy, occupy large space, and have loose connections due to numerous components, leading to unsynchronized movements of the foldable screen during flipping.
Innovation Solution
A spiral guiding dual-axis hinge with a fixing base, two mounting brackets, a slider, and a cover, where the mounting brackets have spiral grooves and are linked via a slider that moves along a guiding track, ensuring synchronized flipping movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional hinge is used with multiple components, then the hinge can achieve folding function, but the weight increases and space occupation increases
Solution Approach 1:
The patent combines multiple hinge components (mounting brackets, slider, guiding track) into an integrated spiral guiding dual-axis hinge structure. The mounting brackets are movably mounted in installation recesses with spiral grooves that guide the slider, creating a unified mechanism that achieves folding function with reduced component count, thereby decreasing weight while maintaining adaptability.
2Adaptability or versatility
If a conventional hinge is used with multiple components, then the hinge can achieve folding function, but the space occupation increases
Solution Approach 1:
The patent employs a nested structure where the slider is received within the spiral grooves of the mounting brackets, and the mounting brackets are positioned within installation recesses of the fixing base. This nested arrangement allows the hinge components to occupy minimal space while maintaining the folding function, as each component is efficiently packed within the structure of the previous component.
3Adaptability or versatility
If a conventional hinge is used with multiple components, then the hinge can achieve folding function, but the connection looseness increases due to tolerance accumulation
Solution Approach 1:
The patent introduces a slider as an intermediary component that connects the two mounting brackets through the spiral grooves and guiding track. This intermediary mechanism ensures synchronized movement of the mounting brackets during folding, as the slider moves along the guiding track constrained by the spiral grooves, eliminating tolerance accumulation and connection looseness while maintaining folding adaptability.
4Device complexity
If the number of components is reduced, then the weight and space are reduced, but the guiding precision may be compromised
Solution Approach 1:
The patent employs spiral grooves with curved surfaces in the mounting brackets and a corresponding curved guiding track. This curved geometry provides precise guiding for the slider during rotation, ensuring accurate movement control with fewer components. The spiral curvature enables the slider to follow a precise arc path, maintaining guiding precision while reducing component count and complexity.
Data Source
AI summary
A spiral guiding dual-axis hinge has a fixing base, two mounting brackets, a slider, and a cover. The fixing base includes two installation recesses and a guiding track. The guiding track is located between the two installation recesses; each of the two mounting brackets has an installing part and a mounting part, a top surface of the installing part forms a spiral groove extending obliquely, the two mounting brackets are movably mounted in the two installation recesses. The slider has two wing parts and a guiding part, a guiding pole is formed on the guiding part, and the slider is mounted in the two spiral grooves via the two wing parts; the guiding pole is disposed through the guiding track. The cover covers the fixing base. The two mounting brackets are linked by the slider, thereby flipping movements of the two mounting brackets being synchronized.