Display Hinge Torque Profile for Smooth Opening Transitions
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Solution Overview
Problem
Conventional display devices experience sudden torque changes at the boundary of the using range and passing range, leading to reduced user dignity due to vibrations and forced closure when opening, and increased operation torque which compromises vibration resistance.
Innovation Solution
The display device incorporates first and second torque generating portions with distinct torque characteristics, allowing for smooth torque transitions between the using and passing ranges by adjusting the rotating angle, ensuring appropriate torque application throughout the ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If torque is increased in the using range, then holding force is improved, but operation torque is increased and use dignity is lowered
Solution Approach 1:
The hinge is divided into two torque generating portions (first and second) that operate in different angular ranges. The first torque generating portion operates in the passing range with lower torque, while the second operates in the using range with higher torque, allowing each segment to be optimized independently for its specific function
Solution Approach 2:
Different torque characteristics are applied to different angular ranges of the hinge operation. The torque generating portions have different structural configurations (different arm lengths, spring constants, or geometric parameters) to provide locally optimized torque characteristics appropriate for each operational phase
2Stability of the object's composition
If torque change at the boundary of using range and passing range is large, then the display is forcibly closed during storing, but this reduces user dignity
Solution Approach 1:
The hinge system dynamically adjusts torque output based on the angular position. By transitioning from the first torque generating portion to the second, the system provides smooth torque modulation that adapts to the operational phase, preventing sudden torque changes that would cause forced closure
Solution Approach 2:
The first torque generating portion is designed to activate before the display reaches the using range, providing preliminary torque support in the passing range. This preliminary action prevents sudden torque changes at the boundary by gradually transitioning between torque generation mechanisms
3Speed
If torque change at the moving time from passing range to using range is large, then a vibration is generated at the tip of the display, but this reduces dignity
Solution Approach 1:
The first torque generating portion provides cushioning torque in the passing range before the display enters the using range. This beforehand cushioning prevents sudden torque changes that would generate vibrations, by smoothly transitioning the torque load as the display approaches the using range boundary
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 design reduces torque changes during transitions, enhancing user dignity by minimizing vibrations and maintaining optimal torque levels, thus improving the overall rotating experience.
Implementation Method 1
a leaf spring is arranged in a hinge shaft. Torque for resisting a rotating movement of the display is generated by biasing force of the leaf spring
Data Source
AI summary
A display is rotatably supported by a hinge portion as a support mechanism from a storing position to a using range by exceeding a passing range. The hinge portion has first and second torque generating portions for generating torque for resisting the rotating movement of the display. The first and second torque generating portions are constructed so as to generate the torque in the using range and the passing range. Torque characteristics according to a rotating angle of the display in the passing range are differently set in the first and second torque generating portions. The first torque generating portion has first torque characteristics for generating first torque in the passing range and the using range. The second torque generating portion has second torque characteristics in which the torque is gradually increased in the passing range and reaches second torque at the using range.