Foldable Screen Hinge Mechanism for Compact Downward Screen Shift
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Solution Overview
Problem
Conventional terminals with foldable screens face challenges in compact design due to the need for large downward shifts of internal components to avoid a bent screen, which complicates overall lightening and thinning of the device.
Innovation Solution
A rotating mechanism with a shaft cover and folding assemblies, including a connection plate, swing arms, and a transmission assembly, allows for a large downward shift of the screen in a small space by reducing the distance between the connection plate and the shaft cover, facilitating a more compact and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large quantity of parts inside the terminal are shifted downward to avoid the bent screen, then the screen can be avoided, but the volume becomes large
Solution Approach 1:
The connection plate is nested within the space between the swing arms and the shaft cover, utilizing the available three-dimensional space efficiently. The lamination surface of the connection plate is positioned to laminate to the bent part of the foldable screen, allowing the screen avoidance function to be achieved without increasing the overall terminal volume.
Solution Approach 2:
Instead of simply shifting parts downward in one dimension, the invention utilizes the spatial relationship between the swing arms rotating in arc trajectories. The connection plate moves in a complex three-dimensional path that includes downward motion, forward motion, and backward motion, effectively using multiple dimensions to achieve screen avoidance in a compact space.
2Reliability
If parts are shifted downward by a large distance, then the bent screen can be avoided, but the space required increases
Solution Approach 1:
The connection plate is designed to move dynamically through a complex trajectory rather than simply translating downward. As the swing arms rotate, the connection plate moves downward, forward, and backward in a coordinated manner, achieving the necessary screen avoidance distance through dynamic motion rather than static displacement.
Solution Approach 2:
The swing arms rotate in arc trajectories rather than straight lines, and the connection plate follows a curved path during its motion. This curved motion allows the connection plate to achieve downward displacement while utilizing the radial space available in the rotating mechanism, effectively reducing the linear distance required for screen avoidance.
3Volume of stationary object
If the distance between the connection plate and the shaft cover is reduced, then the terminal can be more compact, but the mechanism complexity increases
Solution Approach 1:
The invention merges multiple functions into the connection plate: it serves as both the support structure for the lamination surface and the moving component that achieves screen avoidance. The swing arms are also multi-functional, providing both the rotating motion for screen rotation and the mechanical drive for the connection plate's complex trajectory through their arc motion.
Solution Approach 2:
The swing arms serve multiple purposes: they enable screen rotation between folded and unfolded states, provide the mechanical drive for the connection plate's downward motion, and define the spatial constraints that guide the connection plate's trajectory. This multi-functionality reduces the need for separate dedicated components, simplifying the overall mechanism despite the complex motion required.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables a terminal with a foldable screen to achieve a significant downward shift while maintaining a compact form factor, enhancing user experience and device portability by reducing volume and component count.
Implementation Method 1
the connection plate is stretched and deformed in the first direction, and the connection plate moves in a direction away from the shaft cover; and in a process in which the first swing arm and the second swing arm rotate from the unfolded position to the folded position, the connection plate is stretched and deformed, and moves in a direction close to the shaft cover
Data Source
AI summary
This application provides a rotating mechanism, a support apparatus, and a terminal with a foldable screen. A problem that a rotating part with a large volume affects lightening and thinning of an existing terminal with a foldable screen is resolved. A transmission assembly is in a transmission connection to a first swing arm and a second swing arm, so that the first swing arm and the second swing arm rotate between a folded position and an unfolded position. When the first swing arm and the second swing arm rotate from the folded position to the unfolded position, a connection plate moves in a direction away from the shaft cover, and when the first swing arm and the second swing arm rotate from the unfolded position to the folded position, the connection plate moves in a direction close to the shaft cover.