Adaptive Torsion Hinge Assembly for Clamshell Devices
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Solution Overview
Problem
Conventional hinge assemblies in clamshell electronic devices often fail to securely maintain the display at a predetermined position due to insufficient torsion and may experience excessive torsion, leading to difficulties in opening and closing the device smoothly.
Innovation Solution
A hinge assembly featuring a first and second fixing block, first and second linking rods with inclined surfaces and a groove portion, allowing for adaptive torsion adjustment through elastic deformation, ensuring the casings can be securely positioned and preventing damage from excessive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed torsional output hinge assembly is used, then the display and main body maintain consistent torsion during opening/closing, but the display cannot be securely positioned at predetermined angles and excessive torsion occurs during rotation
Solution Approach 1:
The hinge assembly transitions from a fixed torsional output to an adaptive dynamic system where the torsion varies with the opening angle. The elastic deformation component allows the hinge to provide different torsional resistance at different angles, enabling smooth operation while securing the display at predetermined positions.
Solution Approach 2:
The hinge assembly changes the torsional parameter dynamically based on the opening angle. At smaller angles, the elastic deformation provides greater torsion to secure the display, while at larger angles, the torsion decreases to allow smooth opening/closing motion.
2Ease of operation
If a hinge assembly provides insufficient torsion, then the display can rotate smoothly, but the display cannot be securely maintained at a predetermined position
Solution Approach 1:
The hinge assembly uses dynamic torsion adjustment where the elastic deformation component engages at specific angles to provide securing force, while allowing free rotation at other angles. This creates a system that is both smooth to operate and reliable at predetermined positions.
Solution Approach 2:
The hinge assembly provides periodic securing forces at predetermined angles during the rotation cycle. The elastic deformation component engages and disengages periodically as the display rotates, providing security at specific positions while maintaining smooth motion elsewhere.
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 assembly effectively secures the casings at a predetermined angle by increasing torsion as the angle decreases, while the elastic deformation cushions the reaction force, preventing structural damage and ensuring smooth operation.
Implementation Method 1
The sixth end has a groove portion providing elastic deformation and a first inclined surface
Implementation Method 2
the first inclined surface contacts the second inclined surface
Data Source
AI summary
An electronic device and a hinge assembly thereof are provided. The hinge assembly has a first fixing block, a second fixing block, a first linking rod and a second linking rod. The first fixing block has a first end and a second end. The second fixing block has a third end and a fourth end. The first linking rod has a fifth end slidably and rotatably connected to the second end and a sixth end rotatably connected to the fourth end. The second linking rod has a seventh end slidably and rotatably connected to the fourth end and an eighth end rotatably connected to the second end. The sixth end has a groove portion and a first inclined surface, and the eighth end has a second inclined surface contacting the first inclined surface.