Lens Driving Device Spring Terminal Segmentation
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Solution Overview
Problem
Existing autofocus lens driving devices face challenges in designing and handling due to the integration of power supply terminals and springs, leading to bulkiness, difficulty in transportation, and potential damage during assembly.
Innovation Solution
A lens driving device design where the spring is electrically connected to a separate power supply terminal, with a superimposed terminal member that is easily assembled and bonded, allowing for separate design and reduced bulkiness, enabling easier handling and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power supply terminal and spring are integrally formed using the same member, then the structure is simplified, but the spring becomes bulky and difficult to transport and transfer
Solution Approach 1:
The power supply terminal and spring are divided into separate members. The terminal can be easily transported and handled independently, while the spring maintains its functional properties without being constrained by an integrated terminal structure.
2Device complexity
If the power supply terminal and spring are integrally formed, then the structure is simplified, but designing them becomes difficult due to different technical specifications
Solution Approach 1:
By separating the terminal and spring into independent components, each can be designed according to its own technical specifications without compromising the other. The terminal can be optimized for electrical connection and mechanical strength, while the spring can be optimized for elastic properties and electrical conductivity.
3Device complexity
If the power supply terminal protrudes from the spring, then the integrated structure is achieved, but the spring is likely to be damaged during transportation and assembly
Solution Approach 1:
Separating the terminal from the spring eliminates the protruding structure that causes damage during handling. The spring can be transported and assembled without the vulnerability of an extended terminal portion.
Solution Approach 2:
The terminal is extracted from the spring structure, allowing the spring to be a standalone component that can be handled safely. The terminal can then be connected to the spring through a controlled assembly process rather than being an inherent protruding feature.
4Adaptability or versatility
If the terminal and spring are separate members, then design freedom and handling ease are improved, but bonding them becomes troublesome due to the small terminal size
Solution Approach 1:
The terminal and spring are merged into an integrated component where the terminal is formed as an extension or attachment of the spring structure. This combining approach eliminates the need for separate bonding operations while maintaining the benefits of separate design optimization.
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 allows for stable and reliable assembly of the lens driving device, with improved design flexibility and reduced risk of spring damage during transportation and assembly, while maintaining the spring's functionality.
Implementation Method 1
the lens support is moved in the optical axis direction of a lens by way of an electromagnetic force that is generated by applying electric current to the coil from the terminal member
Data Source
AI summary
A lens driving device 1 is provided, in which a spring 11 includes an outer ring portion 11b that is fixed to a body 5, an inner ring portion 11a that is fixed to a lens support 7, and an arm portion 11c that connects the outer ring portion 11b and the inner ring portion 11a, and the lens support 7 is moved in an optical axis direction of a lens by way of an electromagnetic force that is generated by applying electric current to a coil 15 from a terminal member 6, the terminal member 6 including a superimposed portion 6a that is superimposed on the outer ring portion of 11b of the spring 11, and a power supply terminal 6b that protrudes from the superimposed portion 6a, and the terminal member 6 disposing the superimposed portion 6a between the outer ring portion 11b of the spring and the body 5.