Foldable Phone Hinge Groove Structure for Swing Arm Accuracy
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Solution Overview
Problem
The existing folding mechanisms in foldable mobile terminals have complex structures with cumulative tolerances affecting the movement accuracy of swing arms, leading to inefficiencies and increased assembly costs.
Innovation Solution
A folding mechanism with a first support featuring integrally arranged sliding groove surfaces and a swing arm that rotates on a virtual shaft, allowing for improved movement accuracy and reduced assembly complexity by minimizing the number of parts and assembly processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the folding mechanism is assembled from multiple components, then the structure can be modular and easier to manufacture, but the cumulative tolerances of various components affect the movement accuracy of the swing arm
Solution Approach 1:
The patent merges multiple components (main support, swing arm, door plates) into an integrated structure where the swing arm is directly connected to the main support through rotation-fit surfaces. This eliminates intermediate connection components and their associated tolerance accumulations, while still allowing modular manufacturing of the integrated units.
2Adaptability or versatility
If multiple components are used in the folding mechanism, then the structure can be more flexible and easier to assemble, but the quantity of parts and assembly procedures increases
Solution Approach 1:
The patent combines multiple functional components into integrated units with direct rotation-fit connections, reducing the total number of parts while maintaining the necessary structural flexibility for folding and unfolding operations.
3Ease of manufacture
If the sliding groove surfaces are arranged on separate components, then manufacturing and assembly are simpler, but the coaxiality between sliding groove surfaces is difficult to control
Solution Approach 1:
The patent integrates both sliding groove surfaces onto the same main support component, ensuring their coaxiality is inherently controlled by the component's geometry rather than by assembly tolerances between separate parts.
Data Source
AI summary
Embodiments of this application relate to the field of mobile terminal technologies, and provide a folding mechanism and a foldable mobile terminal. The folding mechanism includes a first support and a first swing arm. The first support is provided with a first sliding groove surface and a second sliding groove surface. The first sliding groove surface and the second sliding groove surface are both are surfaces and coaxially arranged. The first sliding groove surface and the second sliding groove surface are spaced apart from each other along an axial direction of the first sliding groove surface. Two sides of the first swing arm are respectively in contact and rotation-fit with the first sliding groove surface and the second sliding groove surface.