Torque-Optional Hinge for Multi-Posture Foldable Displays
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Solution Overview
Problem
Conventional folding laptop devices are limited in their form factor, restricting the positions and postures of electronic devices due to the need for a base to support the display, which limits user interaction and flexibility.
Innovation Solution
The implementation of a torque-optional hinge system that allows for different amounts of frictional resistance, enabling the display to be supported in various postures by selectively engaging or disengaging a torque element, thereby allowing the device to transition between open, drafting, and tablet positions with reduced rotational resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a base is used to support the display in conventional folding laptop devices, then the display is stable and supported, but the options for positions and postures of the electronic device are limited
Solution Approach 1:
The device is divided into separate portions (first portion, second portion, third portion) connected by hinges, allowing independent movement and positioning of each segment. This segmentation enables multiple postures while maintaining structural support without requiring a fixed base configuration.
Solution Approach 2:
The hinge system transitions from a static base support structure to a dynamic system where the third portion can be selectively positioned at different angles. The torque-optional hinge allows the display to be held at various stable positions, providing adaptability while maintaining structural integrity through controlled movement.
2Stability of the object's composition
If a torque-optional hinge with high-torque state is used to support the display, then stable support is provided, but excessive rotational resistance is created during position transitions
Solution Approach 1:
The hinge system dynamically adjusts its torque characteristics based on the operational state. During transitions, the hinge operates in a low-torque state allowing smooth movement. When the display reaches a desired position, the high-torque state engages to provide stable support, thus adapting the mechanical properties to the current operational requirement.
Solution Approach 2:
The hinge system changes its mechanical parameter (torque resistance) between two distinct states. The means for selectively generating torque alters the rotational resistance from high to low based on whether the display needs support or movement, optimizing both stability and ease of operation at different times in the usage cycle.
3Adaptability or versatility
If multiple hinges are used to enable various postures, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The hinge system is designed where the same hinge structure serves multiple functions: it provides both movement capability and support function. The torque-optional hinge can operate in different modes (high-torque for support, low-torque for movement), reducing the need for separate specialized components and simplifying the overall system despite enabling multiple postures.
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
This solution provides a flexible electronic device that can operate like a conventional laptop while also allowing for drafting and tablet modes, enhancing user interaction and flexibility by adjusting torque states to suit different usage scenarios.
Implementation Method 1
The torque element with a ratcheting mechanism is configured to selectively generate a torque around the hinge axis... The high-torque state provides a rotational resistance around the hinge axis and the low-torque state allows rotation around the hinge axis without additional rotational resistance
Data Source
AI summary
An electronic device includes a first portion, a second portion, and a third portion. A torque-optional hinge connects the third portion to the second portion, and a support hinge connects the third portion to the first portion. The torque-optional hinge has a hinge axis and a means for selectively generating a torque around the hinge axis. The means for selectively generating the torque has a high-torque state and a low-torque state. The high-torque state provides a greater rotational resistance around the hinge axis than the low-torque state. The support hinge rotatably connects the first portion and the third portion and provides a torque around a support axis.