Swing Arm Rotating Assembly for Compact Foldable Terminal Hinges
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Solution Overview
Problem
Foldable terminals face challenges due to the large bending radius of their screens, which results in a longer rotating assembly and increased space occupation, compromising portability and compactness.
Innovation Solution
A rotating assembly with a swing arm that switches rotation axis and radius throughout its rotation, featuring a large rotation radius in the first angle range to gently fold the screen and a small radius in the second angle range to minimize assembly length, thereby reducing the overall size of the foldable mechanism and terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large bending radius is used to protect the screen, then the screen is protected from damage, but the rotating assembly becomes longer and occupies more space
Solution Approach 1:
The rotation process is divided into two distinct stages: a first angle range with a first rotation radius and a second angle range with a second rotation radius. This segmentation allows the system to optimize for screen protection during the initial folding phase while minimizing space occupation during the final folding phase.
Solution Approach 2:
The rotation radius is made dynamic by switching between the first rotation radius and the second rotation radius based on the rotation angle range. The swing arm transitions from rotating with the larger first radius to rotating with the smaller second radius, enabling adaptive optimization of both screen protection and space efficiency.
2Reliability
If a large rotation radius is used, then the screen is protected during folding, but the foldable terminal occupies more space
Solution Approach 1:
The folding process is segmented into two angle ranges with different rotation radii. The first angle range uses a larger rotation radius to protect the screen, while the second angle range uses a smaller rotation radius to minimize the overall volume of the foldable terminal when folded.
Solution Approach 2:
The rotation radius dynamically changes from the first rotation radius to the second rotation radius as the swing arm transitions between angle ranges. This dynamic adjustment enables the terminal to maintain screen protection while reducing its folded volume.
3Volume of moving object
If a compact rotating assembly is used to reduce space, then the foldable terminal becomes more portable, but the screen may be damaged due to excessive pulling forces
Solution Approach 1:
The system dynamically adjusts the rotation radius based on the rotation angle. During the first angle range, the larger first rotation radius is used to ensure gentle folding that protects the screen. During the second angle range, the smaller second rotation radius is used to minimize assembly volume while maintaining screen protection.
Solution Approach 2:
The rotation radius parameter is changed from the first rotation radius to the second rotation radius based on the rotation angle range. This parameter change enables the system to optimize both screen protection and compactness at different stages of the folding process.
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
This solution effectively reduces the size of the foldable terminal while protecting the screen from excessive pulling forces during folding, enhancing both portability and compactness.
Implementation Method 1
the swing arm is slidable in the continuous slideway
Implementation Method 2
drive the rotating shaft to rotate when the swing arm rotates in a second angle range
Data Source
Figure 1~2
Figure 3
Figure 4(a)~4(b)
AI summary
This application relates to a rotating assembly, a foldable mechanism, and a foldable terminal, and relates to the field of terminal technologies. The rotating assembly includes a base, a rotating shaft, and a swing arm, where the base is provided with a rotating shaft through-hole and an arc-shaped first slideway, the first slideway and the rotating shaft through-hole communicate with each other, and axes thereof are parallel to each other; the rotating shaft is provided with an arc-shaped second slideway, an axis of the rotating shaft is parallel to an axis of the second slideway, the second slideway runs through the rotating shaft, and a radius of the second slideway is equal to that of the first slideway; the rotating shaft is located in the rotating shaft through-hole, the first slideway and the second slideway can be connected to each other to form a continuous slideway, and the swing arm is located in the continuous slideway and can slide in the continuous slideway; the swing arm is configured to slide in the continuous slideway when the swing arm rotates in a first angle range, and drive the rotating shaft to rotate when the swing arm rotates in a second angle range, and a rotation radius of the swing arm in the first angle range is greater than that in the second angle range. The use of this application can reduce a space in the foldable terminal that is occupied by the foldable mechanism.