Foldable Screen Hinge Module With Shifting Rotation Centers
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Solution Overview
Problem
Current rotating modules for folding screen devices often cause unnatural bending and damage to the folding screen due to their single-angle folding mechanism, which fails to effectively avoid folding the screen during rotation.
Innovation Solution
A rotating module with two rotating arms and a bracket, where the rotation centers of the arms adjust between different positions on a track groove, allowing for a more natural bending of the screen by changing the rotation center's position from the center to the edge during folding, reducing stress on the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-angle folded rotating module is used, then the structure is simple, but the folding screen bends unnaturally and is easily damaged
Solution Approach 1:
The rotating module transitions from a fixed single-angle folding mechanism to a dynamic multi-angle mechanism. The first and second rotating arms can rotate relative to the bracket at different angles independently, allowing the system to adapt to the natural bending radius of the folding screen at different positions, thereby reducing stress concentration and improving screen durability.
2Device complexity
If the rotation center is fixed at the center of the bracket, then the structure is simple, but the screen cannot avoid folding effectively causing unnatural bending
Solution Approach 1:
The rotating module is segmented into multiple independent rotating components: the first rotating arm with its own rotation center, the second rotating arm with its own rotation center, and the bracket. Each segment can rotate independently, allowing the rotation centers to be positioned at different locations rather than fixed at a single central point, enabling better accommodation of the screen's natural bending shape.
3Reliability
If multi-angle rotation is implemented, then the screen bending effect improves, but the device complexity increases
Solution Approach 1:
The patent combines multiple rotating arms and rotation centers into a single integrated rotating module that works together as a unified mechanism. The first rotating arm, second rotating arm, and bracket are structurally integrated, allowing multi-angle rotation functionality to be achieved without proportionally increasing overall device complexity through coordinated design of the components.
Data Source
Figure 1~2
Figure 3
AI summary
A rotating module is provided and includes two rotating arms (200), and a bracket (100) having a track groove (110) and located between the two rotating arms (200). Each rotating arm (200) includes a first rotating piece (210), a first end (211) of which is located in the track groove (110); and a second rotating piece (220) connected with the bracket (100) and a second end (212) of the first rotating piece (210) respectively. In a folded state, a rotation center of the first rotating piece (210) is in a first position on the groove wall of the track groove (110); in an unfolded state, the rotation center of the first rotating piece (210) is in a second position on the groove wall of the track groove (110). The second position is located between a center position of the track groove (110) and the first position, and the rotation center of the first rotating piece (210) is one rotation center of the rotating arm (200).