Dual-Screen Hinge Linkage for Parallel Viewing Angles
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Solution Overview
Problem
Conventional electronic devices with two screens face issues of light reflection and eye fatigue due to differing viewing angles between the main and auxiliary screens, making it difficult for users to view both screens comfortably.
Innovation Solution
A hinge mechanism that allows the auxiliary screen to be raised to a certain angle, enabling both screens to rotate together, adjusting their angles to provide visual integrity and continuity, achieved through a base body with an operating portion, linkage portion, driver assembly, and gear assemblies that coordinate the movement of the screens to maintain parallel slopes for improved viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the auxiliary screen is disposed at a fixed horizontal angle, then the device structure is simple, but light reflection occurs and viewing comfort deteriorates
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed horizontal auxiliary screen into a dynamically adjustable screen that can rotate to different angles. The hinge mechanism enables the auxiliary screen to transition from a static horizontal position to an elevated position at a specific angle (e.g., 15-30 degrees), allowing users to adjust the viewing angle to reduce light reflection and improve viewing comfort while maintaining structural simplicity through controlled motion.
Solution Approach 2:
The patent implements parameter changes by modifying the angular parameter of the auxiliary screen from a fixed horizontal angle (0 degrees) to an adjustable elevated angle (15-30 degrees). This parameter change is achieved through the hinge mechanism that allows the screen to rotate to a predetermined angle range, effectively changing the geometric parameter to eliminate light reflection issues while maintaining device simplicity.
2Adaptability or versatility
If the auxiliary screen and main screen have different viewing angles, then the screens can be independently positioned, but user eye fatigue increases when switching between screens
Solution Approach 1:
The patent applies dynamics by enabling the auxiliary screen to dynamically adjust its angle relative to the main screen. The hinge mechanism allows the auxiliary screen to rotate from a horizontal position to an elevated position, creating a dynamic viewing angle adjustment capability. This dynamic adjustment enables the screens to maintain appropriate angular relationships during different usage scenarios, reducing eye fatigue while preserving positioning flexibility.
3Object-affected harmful factors
If the auxiliary screen is elevated to a certain angle, then viewing comfort improves, but the mechanism complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the hinge mechanism into distinct functional components: the base body with operating portion, linkage portion, and base portion; the driver assembly with driving and driven portions; and the gear assemblies. This segmentation allows each component to perform a specific function (rotation, angle adjustment, position holding) while keeping the overall mechanism manageable and understandable, reducing perceived complexity through modular design.
Solution Approach 2:
The patent uses an intermediary approach by introducing a linkage portion with an arc slot and arc sliding part that mediates between the operating portion and the driven gear assembly. This intermediary component translates rotational motion into the desired angular adjustment of the auxiliary screen, simplifying the overall mechanism by breaking down the complex motion transformation into manageable steps through intermediate elements.
4Ease of operation
If the screens rotate independently, then each screen can be adjusted separately, but visual continuity between screens is lost
Solution Approach 1:
The patent applies merging by combining the adjustment mechanisms of the main screen and auxiliary screen through a unified hinge system. The driving gear assembly and driven gear assembly work together to coordinate the rotation of both screens, ensuring they maintain a stable angular relationship. This merging of adjustment functions preserves visual continuity between screens while still allowing independent positioning within the coordinated motion framework.
Data Source
AI summary
A hinge is adapted to an electronic device having two screens. A base body of the hinge is mounted to a host base of the electronic device. The base body includes an operating portion and a linkage portion connected to each other. A first screen of the two screens is connected to the operating portion; a second screen of the two screens is connected to the linkage portion. The first screen rotates according to an operating part of the operating portion, and a driver assembly of the hinge simultaneously drives the operating portion and the linkage portion to rotate, so that the first screen and the second screen rotate simultaneously. By the simple hinge linkage structure design, the two screens rotate in opposite directions when being open, and may provide parallel slopes for viewing when being open to a preset open angle, thereby enhancing the convenience and smoothness of operation.