Foldable Display Hinge Mechanism With Slider-Cam Bending
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Solution Overview
Problem
Existing rotating shaft mechanisms in foldable display devices have complex structures and unsatisfactory rotation effects, hindering the improvement of comprehensive performance and convenience.
Innovation Solution
A rotating shaft mechanism with a supporting frame, synchronization slider, fixing piece, and cam assembly, featuring an accommodating cavity, sliding guide grooves, and cams with specific angles and contact areas, to facilitate smooth motion and enhance bending effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rotating shaft mechanisms are used with track realization, synchronization, and torque mechanisms, then the bending function can be achieved, but the structure becomes complex and the weight increases
Solution Approach 1:
The patent combines the track realization mechanism, synchronization mechanism, and torque mechanism into an integrated rotating shaft structure. The rotating shaft includes a shaft body with integrated cam profiles that simultaneously achieve track guidance, synchronization, and torque transmission, eliminating the need for separate mechanisms and reducing overall structural complexity.
Solution Approach 2:
The rotating shaft is designed as a multi-functional component where the shaft body serves multiple purposes: it provides the rotational axis, contains integrated cam profiles for track realization, incorporates synchronization features through keyed connections, and transmits torque through its structural design. This multi-functionality reduces the number of separate components needed.
2Reliability
If multiple mechanisms are combined in the rotating shaft to achieve bending function, then the device can fold, but the assembly process becomes complex
Solution Approach 1:
The rotating shaft mechanism is divided into modular segments including the shaft body, fixing pieces, and bending components that can be manufactured separately and then assembled through standardized connection interfaces. This segmentation allows for simplified manufacturing of individual parts while maintaining the integrated functionality of the complete mechanism.
3Reliability
If traditional rotating shaft design is used, then the bending function is achieved, but the rotation effect is unsatisfactory
Solution Approach 1:
The rotating shaft incorporates cam profiles with optimized curved surfaces that guide the bending motion smoothly. The cam surfaces are designed with specific geometric curvatures that ensure uniform rotation and reduce mechanical binding, improving the rotation effect and operational smoothness of the folding mechanism.
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 simplifies the structure and improves the bending effect of foldable display devices, enhancing their overall performance and usability.
Implementation Method 1
a cam assembly correspondingly disposed on the supporting frame and the synchronization slider; where when the fixing piece rotates, the fixing piece may provide a driving force for the synchronization slider, enabling the synchronization slider to slide in the accommodating cavity
Implementation Method 2
a sliding guide groove extending from one side of the synchronization slider to the other side; a sliding guide rail correspondingly disposed in the sliding guide groove
Data Source
AI summary
Embodiments of the disclosure provides a rotating shaft mechanism and a foldable display device. The rotating shaft mechanism includes a supporting frame, a synchronization slider, a fixing piece, and a cam assembly. A sliding guide rail is rotatably connected to the synchronization slider. When the fixing piece rotates, the sliding guide rail provides a driving force for the synchronization slider, enabling the synchronization slider to slide in an accommodating cavity in a direction parallel to an axis of the supporting frame, and driving the cam assembly to slide relatively, which achieves the bending of the foldable display device, simplifies the structure of the rotating shaft mechanism, and improves the bending effect.