Foldable Phone Damping Mechanism for Thin Hinge Force Control
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Solution Overview
Problem
Existing rotating shaft damping mechanisms in foldable screen devices are too large, preventing the development of lighter and thinner foldable machines without compromising the folding hand feel.
Innovation Solution
A damping mechanism utilizing a torsion spring with a first pin, first fixing member, and first swinging member, which generates unfolding and closing forces through elastic forces, allowing for a compact design that does not require direct connection to the rotating shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an existing rotating shaft damping mechanism is used, then the folding hand feel is maintained, but the structure size becomes large
Solution Approach 1:
The damping mechanism is divided into independent functional modules: the torsion spring provides elastic force, the first fixing member provides mounting support, and the first swinging member transmits force. This segmentation allows each component to be optimized independently for compactness while maintaining the overall damping function.
Solution Approach 2:
The first swinging member is rotatably connected to both the first fixing member and the torsion spring, creating a nested arrangement where components are positioned within the spatial envelope of others. The torsion spring is mounted on the first fixing member, and the first swinging member connects both, achieving space-efficient nesting that reduces overall mechanism volume.
2Volume of moving object
If the damping mechanism size is reduced, then the foldable device can be lighter and thinner, but the unfolding force and closing force may be insufficient
Solution Approach 1:
The torsion spring's elastic properties (spring constant, coil diameter, wire diameter) can be adjusted to optimize the force output. By changing these parameters, the spring can generate sufficient unfolding and closing forces within a compact volume, resolving the contradiction between size and force capability.
Solution Approach 2:
The mechanism utilizes rotational motion in multiple dimensions: the torsion spring rotates about its axis to store and release elastic energy, while the first swinging member rotates at its connection point to transmit force. This multi-dimensional rotational approach allows compact force generation without requiring linear space.
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 damping mechanism provides the necessary unfolding and closing forces while occupying minimal space, enabling a lighter and thinner foldable device design with improved user experience.
Implementation Method 1
an elastic force generated by the torsion spring acts on a center of rotation
Data Source
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AI summary
This application relates to the field of communication technologies, and provides a damping mechanism and a terminal, which can adapt to a damping application of a light and thin foldable screen phone. The damping mechanism includes: an elastic member, where the elastic member includes a first pin and a second pin; a first fixing member, where the first fixing member is rotatably connected to the second pin in a first direction; and a first swinging member, where the first swinging member includes a first fixing portion and a first moving portion connected to the first fixing portion, and the first fixing portion is rotatably connected to the first fixing member in the first direction; the first moving portion is rotatably connected to the first pin in the first direction; and when rotation is performed between the first fixing member and the first swinging member, an elastic force generated by the elastic member acts on a center of rotation in which the first moving portion is rotatably connected to the first pin, forming an unfolding force or a closing force.