Optical Component Driving Mechanism with Integrated Spring Sheet
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Solution Overview
Problem
The existing optical component driving mechanisms for electronic devices, such as smartphones, face challenges in miniaturization due to the space occupied by elastic members, which hinder the reduction of thickness and increase in stability.
Innovation Solution
The optical component driving mechanism employs a single spring sheet with distinct elastic coefficients, where the second elastic coefficient is at least 20 times the first, to connect the holder and frame without additional elastic members between the holder and base, allowing for reduced overall height and improved stability by centering the spring sheet's gravity with the optical component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple elastic members are used to connect the holder and base, then the stability and support function are improved, but the thickness and internal space occupation increase
Solution Approach 1:
The patent combines multiple elastic members into a single integrated spring sheet structure. The spring sheet includes a first elastic portion and a second elastic portion that work together to provide both vertical support and lateral stability, eliminating the need for separate elastic members and reducing overall thickness.
Solution Approach 2:
The spring sheet serves multiple functions simultaneously: it provides vertical elastic support, lateral stability, and structural connection between the holder and base. The first and second elastic portions of the spring sheet perform different functions (vertical support and lateral restraint) within a single component.
2Length of stationary object
If the thickness of the optical component driving mechanism is reduced, then the miniaturization is achieved, but the stability and support function may be compromised
Solution Approach 1:
The spring sheet has different elastic coefficients in different directions and regions. The first elastic portion has optimized elasticity for vertical support, while the second elastic portion provides lateral stability. This localized optimization of elastic properties maintains stability even with reduced overall thickness.
3Reliability
If additional elastic members are added to improve support function, then the reliability is improved, but the device complexity and space occupation increase
Solution Approach 1:
Multiple elastic members are merged into a single spring sheet structure that integrates the functions of what would otherwise require separate components. This reduces device complexity while maintaining the necessary support and stability functions.
4Reliability
If the elastic members are positioned to optimize support, then the reliability is improved, but the internal space arrangement becomes more complex
Solution Approach 1:
The spring sheet utilizes three-dimensional spatial configuration with its first and second elastic portions arranged in different orientations. This allows optimal support positioning without requiring complex planar arrangements, effectively using vertical and lateral dimensions to simplify overall space utilization.
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 design achieves miniaturization by reducing the overall height of the driving mechanism, enhances stability, and prevents the spring sheet from breaking, ensuring normal operation by effectively supporting the holder and enabling auto focusing and optical image stabilization.
Implementation Method 1
a first elastic member (1061) and a second elastic member (1062), and a first elastic portion (1065) connected to the first outer connecting portion (1063) and the first inner connecting portion (1064), and a second elastic portion (1068) connected to the second outer connecting portion (1066) and the second inner connecting portion (1067)
Data Source
AI summary
An optical component driving mechanism includes a holder, a frame, a casing, a base, a first elastic member, a second elastic member and a driving assembly. The holder is for holding an optical component. The frame is elastically connected to the holder. The base is fixedly connected to the casing. The first elastic member has a first outer connecting portion and a first inner connecting portion. The second elastic member has a second outer connecting portion and a second inner connecting portion. The driving assembly is configured to drive the holder to move relative to the frame. The first and second outer connecting portions are disposed on the frame, the first and second inner connecting portions are disposed on the holder, and there is no elastic member disposed between the holder and the base for connecting the base or the frame.