Metal Cover Body for Variable Aperture Camera Module
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Solution Overview
Problem
Conventional variable apertures in camera modules suffer from short service life due to deformation and damage of blades caused by the plastic upper cover, which is prone to deformation under impact.
Innovation Solution
A variable aperture design featuring a metal first cover body instead of a plastic one, which enhances structural strength and anti-impact capability, preventing deformation and damage to the blades and ensuring a longer service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic upper cover is used in the variable aperture, then the manufacturing cost is reduced and ease of manufacture is improved, but the cover body is prone to deformation under impact, causing blade damage and short service life
Solution Approach 1:
The patent changes the material parameter of the cover body from plastic to metal, fundamentally altering the mechanical properties including strength, hardness, and impact resistance. This material substitution resolves the contradiction by providing both adequate manufacturability and significantly improved reliability, preventing blade deformation and damage while extending service life.
Solution Approach 2:
The patent employs metal material for the cover body, utilizing its inherent composite properties of high strength, rigidity, and durability. The metal cover body acts as a protective structure that maintains blade positioning and prevents deformation, thereby improving reliability without substantially compromising manufacturing feasibility.
2Strength
If a metal first cover body is used instead of plastic, then the structure strength and anti-impact capability are increased, but the manufacturing cost may increase
Solution Approach 1:
The patent changes the material parameter from plastic to metal, accepting the trade-off of potentially higher manufacturing cost in exchange for dramatically improved structure strength and anti-impact capability. The metal cover body provides superior mechanical properties that directly address the strength requirement while maintaining reasonable manufacturability through standard metal forming processes.
Data Source
AI summary
A variable aperture associated camera and electronic device includes a fastening base, a rotation support, a plurality of blades, and a first metal cover body. The rotation support is located on the inner side of the fastening base and is rotatably connected to the fastening base. The rotation support encloses a space. The blades together enclose a light transmission hole, and the light transmission hole is in communication with the space. Each of the blades is rotationally connected to the fastening base, and is also slidably connected to the rotation support. The first cover body is fastened to the fastening base, and is located on a side adjacent to the blades and that is distal from the fastening base.