Wave-Shaped Elastic Buffer for Optical Image Stabilization
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Solution Overview
Problem
Conventional electronic devices with image stabilization mechanisms often suffer from elastic member damage due to stress concentration when rotating optical members, leading to mechanical failure.
Innovation Solution
A driving mechanism incorporating a fixed module, a movable module, a driving module, and an elastic member with wave-shaped buffer portions that distribute stress evenly around rotation axes, preventing concentration and potential breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical member rotates during image stabilization, then image stabilization function is achieved, but the elastic member becomes broken or damaged due to stress concentration
Solution Approach 1:
The elastic member is divided into multiple segments including a first buffer portion with wave-shaped structure, a first string portion, and a second buffer portion with wave-shaped structure. This segmentation distributes the stress across multiple sections rather than concentrating it in a single location, preventing breakage during rotation.
Solution Approach 2:
The wave-shaped buffer portions are designed in advance to absorb and distribute stress before it can concentrate and cause damage. The cushioning structure is built into the elastic member beforehand, allowing it to withstand rotational stresses without breaking.
2Length of moving object
If the elastic member is designed to be thin and flexible for compact device, then device thickness is reduced, but stress concentration occurs during rotation
Solution Approach 1:
The elastic member is segmented into buffer portions and string portions, allowing the overall structure to remain thin while specific sections (buffer portions) provide stress distribution. The wave-shaped structure in buffer portions adds strength without significantly increasing thickness.
Solution Approach 2:
Different sections of the elastic member have different structures optimized for their specific functions. The buffer portions have wave-shaped structures for stress distribution, while the string portions maintain a simpler form for flexibility. This local differentiation provides both thinness and strength where needed.
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 solution effectively disperses stress across the elastic member, reducing the likelihood of damage and ensuring continuous operation of image stabilization in electronic devices like digital cameras and smartphones.
Implementation Method 1
an elastic member with wave-shaped buffer portions that distribute stress evenly around rotation axes, preventing concentration and potential breakage
Data Source
AI summary
A driving mechanism for supporting an optical member is provided, including a fixed module, a movable module, a driving module disposed therebetween, and an elastic member. The driving module can drive the movable module to rotate around a first rotation axis relative to the fixed module. The elastic member includes a first connecting portion connected to the movable module, a second connecting portion connected to the fixed module, a first string portion connected to the first connecting portion, and a first buffer portion connected to the first string portion. The first string portion is disposed on the first rotation axis. The longitudinal axis of the first string portion is parallel to the first rotation axis. The first buffer portion has wave-shaped structure.