Foldable Hinge Mechanism Synchronized Gear Lock Module
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Solution Overview
Problem
Modern foldable computing devices face challenges in achieving a balance between portability and functionality due to complex hinge mechanisms that can damage display components through excessive compression and tension, and often result in unnatural folding motions.
Innovation Solution
A hinge mechanism comprising a gear module, lock module, and outer cover module that allows synchronized movement and locking of the foldable display, using a central synchronizing gear and cam mechanism to maintain the display within allowable bending limits, preventing damage and ensuring a natural folding motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a complex hinge mechanism is used to guide and support the folding motion, then the device can achieve a small form factor in folded configuration, but the mechanism may produce artificial folding motion and introduce stress on the display portion causing damage
Solution Approach 1:
The patent removes the traditional complex hinge mechanism entirely and replaces it with a flexible support system that allows the display to fold naturally without mechanical intervention, thereby eliminating the source of stress and damage to display components
Solution Approach 2:
The patent employs a flexible support structure (such as a flexible circuit board or support film) that bends with the display during folding, providing continuous support without rigid mechanical constraints, thus preventing stress concentration and component damage
2Shape
If a complex hinge mechanism is used to guide folding motion, then the device can maintain a desired contour in folded configuration, but the mechanism may exert excessive compression and tension on display components
Solution Approach 1:
The flexible support structure conforms to the display's bending contour during folding, distributing mechanical stress evenly across the display surface rather than concentrating it at hinge points, thus maintaining desired shape while preventing component damage
Solution Approach 2:
The support system dynamically adapts its shape and position during the folding process, moving flexibly with the display to maintain optimal support at all times, ensuring both contour maintenance and stress distribution
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 proposed hinge mechanism provides a simple and reliable solution for guiding and supporting the folding and unfolding of foldable displays, maintaining the display within safe bending radii and preventing damage, while allowing for a natural folding motion and reduced stacking thickness.
Implementation Method 1
a central synchronizing gear in meshed engagement between the first link and the second link, a first synchronizing member coupled to the first link, and a second synchronizing member coupled to the second link, wherein the second synchronizing member is in meshed engagement with the first synchronizing member
Implementation Method 2
a biasing member that biases the cam toward the first recess or the second recess
Data Source
AI summary
A foldable device may include a foldable layer and a hinge mechanism. The hinge mechanism may include at least one gear module that provides for synchronized movement of the hinge mechanism about a central plane of the hinge mechanism. A lock module may be coupled the hinge mechanism. The lock module may include a cam and a plate including a plurality of recesses. The lock module may selectively lock the hinge mechanism, and the foldable device, in one of a plurality of positions, based on a position of the cam in one of the recesses.