Foldable Hinge Gears With Variable Tip Radii for Display Clearance
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Solution Overview
Problem
Existing foldable electronic devices with flexible displays face issues of space occupation and potential damage due to synchronous gears pressing against the display or obstructing movement, particularly in miniaturized designs.
Innovation Solution
The synchronous gear is designed with two tooth parts having different radii of tip circles, allowing for flexible space configuration to prevent gear interference with the display and improve movement synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a synchronous gear with uniform tip circle radius is used, then the gear structure is simple and easy to manufacture, but the gear occupies fixed space and may press against the flexible display or obstruct door plate movement
Solution Approach 1:
The synchronous gear is designed with different tip circle radii for different tooth parts (first tooth part and second tooth part have different radii). This local differentiation allows the gear to adapt its geometry in specific regions, enabling the gear to avoid pressing against the flexible display or obstructing door plate movement while maintaining overall structural integrity and synchronization function.
2Object-affected harmful factors
If the synchronous gear is designed with different radii of tip circles for different tooth parts, then space occupation becomes flexible and interference with display is prevented, but the gear structure becomes more complex
Solution Approach 1:
The synchronous gear incorporates different tip circle radii for different tooth parts to achieve flexible space occupation and prevent interference with the flexible display. This localized geometric variation allows the gear to navigate around obstacles in specific areas while maintaining a relatively simple overall structure that preserves synchronization functionality.
3Stability of the object's composition
If the synchronous gear occupies fixed space, then the gear structure is stable and easy to position, but the foldable mechanism cannot be miniaturized effectively
Solution Approach 1:
The synchronous gear uses different tip circle radii for different tooth parts to optimize space occupation. This allows the gear to maintain stable positioning in critical areas while reducing overall space consumption, thereby enabling effective miniaturization of the foldable mechanism without compromising gear stability or synchronization performance.
Data Source
AI summary
Foldable mechanisms and devices are provided, including a main shaft, a first bracket, a second bracket, a first swing arm, a second swing arm, a first synchronous gear, and a second synchronous gear. The first swing arm is rotatably connected to the main shaft and is slidably connected to the first bracket, and the second swing arm is rotatably connected to the main shaft and is slidably connected to the second bracket. The first synchronous gear is rotatably connected to the main shaft, the first synchronous gear includes a first tooth part and a second tooth part that have different radii of tip circles. The second synchronous gear is rotatably connected to the main shaft, the second synchronous gear includes a third tooth part and a fourth tooth part that have different radii of tip circles, and the second tooth part is engaged with the third tooth part.