Lens Driving Apparatus Shielding Portion Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing lens driving apparatuses for portable electronic devices are complex and require numerous alignment and calibration steps, which limits production efficiency and increases manufacturing costs, while also affecting image quality and optical anti-shake functionality.
Innovation Solution
A simplified lens driving apparatus design that integrates a base, metal cover, carrier, coils, magnets, and a spring set, where the second magnets are aided by shielding portions to reduce assembly steps from two to one, allowing for simultaneous preassembly and alignment of magnets and leaf springs, enhancing production efficiency and maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional lens driving apparatus design with separate assembly steps is used, then assembly accuracy can be maintained, but production efficiency is limited and manufacturing cost increases
Solution Approach 1:
The patent combines the assembly of the second magnet and the leaf spring into a single integrated step. The second magnet is pre-assembled on the carrier, and the leaf spring is then assembled to connect the carrier and frame, completing both functions in one operation rather than requiring separate alignment and calibration steps for each component.
Solution Approach 2:
The second magnet is pre-assembled on the carrier before the final assembly with the frame. This preliminary positioning of the magnet allows for optimized subsequent assembly steps, enabling the leaf spring to be connected in a single operation while maintaining precise alignment requirements.
2Manufacturing precision
If multiple alignment and calibration steps are performed, then assembling accuracy is maintained, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple alignment and calibration operations into a single assembly step. By pre-positioning the second magnet on the carrier and then assembling the leaf spring in one operation, the need for separate alignment procedures is eliminated, reducing both time and cost while maintaining the required precision through the integrated design.
3Productivity
If simplified assembly design is implemented, then production efficiency increases, but assembly accuracy may be compromised
Solution Approach 1:
The second magnet is pre-assembled on the carrier with precise positioning before the leaf spring is connected. This preliminary action ensures that the magnetic components are correctly positioned relative to the carrier's central axis, maintaining alignment accuracy while enabling the simplified single-step assembly process that improves production efficiency.
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 reduces assembly complexity, increases production efficiency, and lowers costs while maintaining the accuracy and functionality required for high-end imaging and optical anti-shake functions in portable electronic devices.
Implementation Method 1
the leaf spring is deformed by force to provide degrees of freedom and restoring force for the carrier
Implementation Method 2
the voice coil motor (VCM) acting as a lens driving apparatus is applied to the lens assembly in the electronic device for providing an auto-focusing function
Data Source
AI summary
A lens driving apparatus is for driving a lens assembly and includes a base, a metal cover, a carrier, a first coil, at least one first magnet, at least one second magnet, a frame and a spring set. At least one lower leaf spring of the spring set includes a frame connecting section, a carrier connecting section and a resilient section. The carrier connecting section and the second magnet are arranged along the first direction. The carrier connecting section includes an opening portion and a shielding portion, and the opening portion and the shielding portion both corresponding to the second magnet along the first direction are respectively for a part of the second magnet to be exposed through the opening portion and another part of the second magnet to be shielded by the shielding portion.