Synchronous Hinge Structure for Light Opening and Stable Holding
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Solution Overview
Problem
Existing hinges in electronic devices, such as laptop computers, fail to provide a mechanism that allows for easy opening with minimal resistance while maintaining a stable angle without automatic closure, thus failing to achieve the desired functions of light opening and heavy closing.
Innovation Solution
A hinge design incorporating torsion shafts, a resilient structure, and rotary arms with bumps that apply forces to facilitate easy opening and stable angle maintenance, utilizing a damping structure with cams and friction plates to manage resistance during opening and closing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hinge structure is used, then the device has simple structure, but the opening force is too large and automatic closure occurs
Solution Approach 1:
The hinge is divided into multiple functional modules: damping component with first and second resilient members, friction component with friction plate, and synchronous component. Each module independently controls specific aspects of the opening/closing behavior, allowing fine-tuned resistance management without requiring complete redesign of the entire hinge system.
Solution Approach 2:
Multiple resilient members (first and second resilient members) and damping/friction components are integrated within a single hinge assembly. This combines several force-generation mechanisms into one unified structure, achieving complex opening/closing characteristics without requiring multiple separate components.
2Ease of operation
If resilient structures are added to reduce opening resistance, then the opening becomes easier, but the structure becomes more complex
Solution Approach 1:
The hinge employs multiple resilient members that dynamically adjust resistance based on the hinge's position and velocity during opening/closing. The damping component provides velocity-dependent resistance, while friction components provide position-dependent resistance, creating adaptive behavior that simplifies operation across different states.
Solution Approach 2:
The resistance characteristics are controlled by adjusting parameters of existing components such as the spring constants of resilient members, friction coefficients of friction plates, and damping coefficients. This allows fine-tuning of opening/closing behavior without changing the fundamental structure or adding numerous new components.
3Stability of the object's composition
If damping structures are added to prevent automatic closure, then the stability improves, but the manufacturing complexity increases
Solution Approach 1:
The friction plate acts as an intermediary component between the resilient members and the hinge axis. It translates the elastic forces from the resilient members into controlled frictional resistance that prevents automatic closure. This intermediary approach allows stable angle maintenance using simple, easily manufactured friction surfaces rather than complex mechanical stops or locks.
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 hinge design enables easy one-handed laptop opening with reduced resistance and maintains a stable angle without automatic closure, achieving the desired functions of light opening and heavy closing.
Implementation Method 1
a first resilient member configured to supply a spring force to the slider
Implementation Method 2
the resilient structure is configured to apply a force to the torsion shaft by the bumps, such that the two rotary arms have a tendency to rotate away from each other
Implementation Method 3
utilizing a damping structure with cams and friction plates to manage resistance during opening and closing
Data Source
AI summary
Provided is a hinge. The hinge includes: a mounting base, two torsion shafts, a resilient structure, and two rotary arms; wherein the two torsion shafts and the resilient structure are mounted on the mounting base, the resilient structure is disposed between the two torsion shafts, and the two rotary arms are connected to the two torsion shafts respectively; a bump is disposed on a side wall of each of the two torsion shafts, wherein the bump is disposed on a side, close to the resilient structure, of the torsion shaft, and the bumps of the two torsion shafts are in contact with the resilient structure; and the resilient structure is configured to apply a force to the torsion shaft by the bumps, such that the two rotary arms have a tendency to rotate away from each other.