Rotating Shaft Body with Segmented Surfaces for Foldable Hinge Control
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Solution Overview
Problem
Circular rotating shafts in foldable electronic devices cannot adequately control the rotating angle of components due to the lack of position-setting mechanisms, leading to uncontrolled folding and unfolding.
Innovation Solution
The introduction of a rotating shaft body with two independent rotating surfaces and stopper parts allows for precise control of the rotating angle by enabling each component to rotate around its own surface, with stopper parts on the surfaces and a supporting surface to set positions and prevent components from falling off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional circular rotating shaft is used, then the structure is simple and easy to manufacture, but the rotating angle of the foldable screen cannot be adequately controlled
Solution Approach 1:
The rotating shaft body is segmented into multiple functional surfaces: a first rotating surface for the first rotating component, a second rotating surface for the second rotating component, and a supporting surface. This segmentation allows each surface to independently control the rotation angle of its corresponding component, resolving the contradiction between structural simplicity and rotation control capability.
Solution Approach 2:
Different surfaces of the rotating shaft body are designed with different local qualities and functions. The first rotating surface, second rotating surface, and supporting surface each have specific geometric features and stopper parts tailored to control the rotation angles of different components, enabling precise rotation control while maintaining overall structural simplicity.
2Device complexity
If a circular rotating shaft with smooth surface is used, then the structure is simple, but the position of the rotating component cannot be set
Solution Approach 1:
The rotating shaft body is divided into multiple functional surfaces with distinct roles. Each surface (first rotating surface, second rotating surface, supporting surface) is equipped with specific stopper parts that define precise rotational positions, enabling accurate position setting without requiring additional complex position-setting components.
Solution Approach 2:
The rotating shaft body itself provides the position-setting function through its integrated stopper parts on different surfaces. The stopper parts automatically limit and define the rotational positions of the rotating components, making the system self-sufficient for position control without needing separate position-setting mechanisms.
3Device complexity
If only one rotating surface is provided, then the structure is simple, but two rotating components cannot rotate independently
Solution Approach 1:
The rotating shaft body is segmented into multiple independent rotating surfaces: a first rotating surface for the first rotating component and a second rotating surface for the second rotating component. This segmentation enables each component to rotate independently around its designated surface, providing the adaptability and versatility needed for dual-component rotation while maintaining structural integration.
Solution Approach 2:
The rotating shaft body serves multiple functions simultaneously: it provides a first rotating surface for one component, a second rotating surface for another component, and a supporting surface for structural support. This multi-functionality allows independent rotation of multiple components while keeping the overall structure unified and relatively simple.
Data Source
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AI summary
A rotating shaft body and an electronic device are provided in this disclosure. The rotating shaft body includes a first rotating surface and a second rotating surface. The first rotating surface and the second rotating surface have a common side edge. The axis of rotation of the first rotating surface and the axis of rotation of the second rotating surface are on a same side and do not overlap. The first rotating surface is provided with a first stopper part. The second rotating surface is provided with a second stopper part. The rotating shaft body further includes a supporting surface. The supporting surface is provided on a same side as the axes of rotation of the two rotating surfaces. The supporting surface is concave toward the two rotating surfaces. Two sides of the supporting surface are provided with a third stopper part and a fourth stopper part respectively.