Hinge Module Cam Mechanism for Flexible Display Stability
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Solution Overview
Problem
Electronic devices with flexible displays face challenges in maintaining stable coupling between components due to manufacturing tolerances and repeated deformation, leading to unintended relative displacement and reduced user satisfaction.
Innovation Solution
A hinge module is designed with a hinge bracket, rotation members, a cam member, and an elastic member, which provides a stable coupling structure by using the elastic force to contact inclined surfaces of the rotation members, thereby suppressing unintended relative displacement and maintaining a stable position during folding and unfolding operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hinge module is used to enable folding between first and second housings, then the electronic device achieves portability and compactness, but manufacturing tolerances and repeated deformation cause unintended relative displacement and reduced coupling stability
Solution Approach 1:
The hinge module employs dynamic elements including a cam member that converts rotational motion into linear motion, and an elastic member that provides continuous contact force. This dynamic mechanism adapts to manufacturing tolerances and maintains stable coupling during repeated folding and unfolding operations, resolving the contradiction between folding capability and coupling stability.
Solution Approach 2:
The elastic member continuously exerts force on the cam member, creating a feedback mechanism that maintains constant contact between the cam member and rotation members. This feedback ensures that the hinge bracket dynamically adjusts to maintain stable coupling, compensating for manufacturing tolerances and repeated deformation.
2Reliability
If the cam member is pressed against the rotation members by elastic force, then unintended relative displacement is suppressed, but the structure becomes more complex
Solution Approach 1:
The hinge module merges multiple functions into integrated components: the cam member simultaneously converts rotational motion to linear motion and provides the pressing force through elastic member contact; the hinge bracket integrates the rotation members and cam member into a unified structure. This merging reduces the number of separate components while maintaining position stability.
Solution Approach 2:
The elastic member automatically maintains continuous contact with the cam member through its inherent elastic force, eliminating the need for additional adjustment mechanisms or complex control systems. The system self-regulates the pressing force to suppress unintended displacement without requiring external intervention.
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 module enhances user satisfaction by ensuring a stable coupling even with manufacturing tolerances and repeated deformations, improving the perceived quality and reliability of the electronic device.
Implementation Method 1
an elastic member providing an elastic force to the cam member in a first action direction
Data Source
AI summary
An hinge module configured to pivotably couple first and second housings, includes a hinge bracket, a first rotation member coupled with the first housing and disposed on the hinge bracket pivotably or rotatably around a first folding axis, a second rotation member coupled with the second housing and disposed on the hinge bracket pivotably or rotatably around a second folding axis, a cam member on the hinge bracket to be linearly movable, and an elastic member providing elastic force to the cam member in a direction in which the first rotation member and the second rotation member are brought into close contact. The cam member is configured to press at least part of the first rotation member in a direction crossing the first folding axis or at least part of the second rotation member in a direction crossing the second folding axis based on elastic force of the elastic member.