Dual-Motion Laptop Hinge for One-Handed Opening
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Solution Overview
Problem
Conventional connection devices for laptop computers make it impossible to open them with one hand as they become thinner and lighter.
Innovation Solution
A connection device with a shaft and dual motion assemblies that switch states based on angle ranges, allowing for easier one-handed opening by varying torque and friction forces during different stages of opening and closing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional connection devices are used in thinner and lighter laptop computers, then the laptop becomes more portable, but it becomes impossible to open with one hand
Solution Approach 1:
The connection device is divided into two independent motion assemblies (first motion assembly and second motion assembly) that can operate independently in different angle ranges. Each assembly has its own friction control mechanism, allowing the device to provide different torque characteristics for different opening stages, enabling one-handed operation while maintaining overall system lightness.
Solution Approach 2:
The friction force in the motion assemblies is designed to be dynamically adjustable based on the angle range. When the connection device is in different angle ranges, different motion assemblies are activated with different friction characteristics, providing optimal torque for each stage of opening and closing operations.
2Ease of operation
If dual motion assemblies with state switching are implemented, then one-handed opening is enabled, but device complexity increases
Solution Approach 1:
Both motion assemblies share a common shaft and are integrated into a single connection device structure. The assemblies work together through the shared shaft, merging their functions while maintaining independent friction control, thus reducing overall structural complexity compared to having completely separate mechanisms.
Solution Approach 2:
Each motion assembly has localized friction control characteristics tailored to specific angle ranges. The first motion assembly is optimized for certain angle ranges while the second is optimized for others, allowing each component to have specialized properties that simplify its design while achieving the overall one-handed opening function.
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
Enables one-handed opening of laptop computers by optimizing torque and friction forces, reducing design complexity, and ensuring stable operation during use.
Implementation Method 1
varying torque and friction forces during different stages of opening and closing
Data Source
AI summary
A connection device includes a shaft, a first motion assembly connected to the shaft, and a second motion assembly connected to the shaft. When the connection device is in a first angle range, the second motion assembly is in a first state in which a position of the second motion assembly relative to the shaft remains unchanged, and the first motion assembly is in a second state. When the connection device is in a second angle range, the first motion assembly is in the first state in which a position of the first motion assembly relative to the shaft remains unchanged, and the second motion assembly is in the second state.