Foldable Display Hinge Mechanism Using Rolling Friction
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Solution Overview
Problem
Traditional folding mechanisms for foldable electronic equipment with flexible displays suffer from reduced transmission accuracy and abnormal noise over long-term use, affecting durability.
Innovation Solution
A folding mechanism featuring a base frame, support, rotor, and roller, where the support is movably connected to the base frame, and the rotor includes a sub-rotor with a slidingly connected first connecting body, utilizing rolling friction to reduce wear and tear and maintain accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sliding friction mechanism is used in folding mechanism, then结构简单 (structure is simple), but transmission accuracy decreases and abnormal noise occurs after long-term use
Solution Approach 1:
The patent replaces the traditional sliding friction connection with a rolling friction connection by introducing a roller between the first connecting body and the support. This substitution transforms the mechanical interaction from sliding to rolling, significantly reducing wear and maintaining transmission accuracy over long-term use while avoiding abnormal noise.
Solution Approach 2:
The patent changes the friction parameter by introducing a roller that converts sliding friction into rolling friction. This parameter change reduces the coefficient of friction and wear between the first connecting body and the support, thereby maintaining transmission accuracy and preventing abnormal noise during repeated folding operations.
2Reliability
If sliding friction connection is used between first connecting body and support, then manufacturing is easy, but wear and tear increases over time
Solution Approach 1:
The patent introduces a roller to replace the direct sliding friction connection between the first connecting body and the support. This substitution reduces wear and tear by converting sliding friction to rolling friction, thereby improving durability while maintaining reasonable manufacturing complexity.
Solution Approach 2:
The roller acts as an intermediary element between the first connecting body and the support. This intermediary component reduces direct contact and wear between the two parts, extending the service life of the folding mechanism while adding only one relatively simple component to the structure.
3Reliability
If rolling friction fit is implemented with roller, then wear and tear is reduced and transmission accuracy is maintained, but device complexity increases
Solution Approach 1:
The patent implements rolling friction fit by introducing a roller between the first connecting body and the support. This substitution maintains transmission accuracy and reduces wear while adding only one relatively simple rolling component, making the increase in device complexity acceptable given the significant improvement in reliability.
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 mechanism effectively reduces wear and tear, ensuring transmission accuracy and preventing abnormal noise, thereby enhancing the durability of foldable electronic equipment.
Implementation Method 1
The roller is rotatably provided on at least one of the first connecting body or the support, so that at least part of the first connecting body is in rolling friction fit with the support
Data Source
AI summary
A folding mechanism, including: a base frame; a support, movably connected to the base frame; a rotor, including a sub-rotor that is rotatably connected to the base frame, where the sub-rotor includes a first connecting body that is slidingly connected to the support; and, a roller, rotatably provided on at least one of the first connecting body or the support, so that at least part of the first connecting body is in rolling friction fit with the support.