Foldable Hinge Module With Convex-Concave Damping for Accurate Rotation
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Solution Overview
Problem
The existing foldable electronic devices face insufficient transmission accuracy due to a gap between the first drive surface on a rotating shaft and the second drive surface on a drive ring, which affects the rotational movement and accuracy in folding and unfolding processes.
Innovation Solution
A foldable module design that includes a first connection part, a first pin, a first drive ring, and a first spring, with a first convex part and a first concave part disposed between the drive ring and the connection part, allowing direct movement of the convex part relative to the concave part, enhancing transmission accuracy and facilitating faster folding and unfolding by ensuring precise alignment and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a first drive surface on a rotating shaft and a second drive surface on a first drive ring are used to drive the first drive ring to rotate, then the foldable module can achieve folding and unfolding functions, but transmission accuracy is insufficient due to the gap between the drive surfaces
Solution Approach 1:
The patent extracts the gap between the drive surfaces by introducing a wedge-shaped structure that fills the gap. The wedge-shaped structure is taken out from the connection part and inserted into the gap between the rotating shaft and drive ring, eliminating the transmission inaccuracy caused by the gap while maintaining the overall structural simplicity.
Solution Approach 2:
The wedge-shaped structure acts as an intermediary element between the rotating shaft and the drive ring. It mediates the transmission by filling the gap and providing continuous contact, ensuring accurate transmission without requiring complex adjustment mechanisms or increasing overall device complexity.
2Manufacturing precision
If a wedge-shaped structure is introduced to fill the gap between the rotating shaft and drive ring, then transmission accuracy is improved, but the device complexity increases
Solution Approach 1:
The wedge-shaped structure is merged with the connection part as an integrated component. This combining approach allows the wedge to function as part of the existing structure rather than a separate additional component, improving transmission accuracy without significantly increasing the number of discrete parts or assembly complexity.
3Productivity
If the convex part slides out of the concave part to provide damping force, then the folding and unfolding time is reduced, but the structure becomes more complex
Solution Approach 1:
The patent introduces a dynamic damping mechanism where the convex part on the drive ring slides in and out of the concave part on the connection part during folding and unfolding operations. This dynamic interaction provides speed control and damping force without requiring complex external control systems, achieving fast operation through simple mechanical interaction.
Solution Approach 2:
The damping mechanism is self-regulating through the convex-concave part interaction. The structure automatically provides damping force during operation without requiring external control, sensors, or additional power sources. The sliding action of the convex part in and out of the concave part naturally controls the folding and unfolding speed.
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 improved design enhances transmission accuracy, reduces the time required for folding and unfolding, and provides a better user experience by ensuring smooth rotation and maintaining the folded or unfolded state with increased damping force and restoring force.
Implementation Method 1
a first spring pushes the first convex part and the first concave part to be separated, to provide damping force for unfolding or folding
Implementation Method 2
the first convex part slides out of the first concave part, to provide damping force for unfolding or folding
Data Source
AI summary
A foldable module and a corresponding device are provided. The foldable module includes a first connection part, a first pin, a first drive ring, and a first spring. The first pin passes through the first drive ring, a first pin hole which is disposed on the first connection part, and the first spring. A first convex part and a first concave part are disposed between the first drive ring and the first connection part. The first convex part is located between (a) the first spring and (b) the first concave part or the first convex part. When the first connection part rotates, or in a folding or unfolding process, the first convex part slides out of the first concave part, to provide damping force for unfolding or folding. The first connection part directly drives the first convex part and the first concave part to move correspondingly, thereby improving transmission accuracy.