Iris Module Magnet Holder Coupling for Impact Resistance
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Solution Overview
Problem
Camera modules in portable electronic devices face challenges in applying mechanical irises due to structural limitations, leading to increased impact on iris modules, deformation, and damage when external forces are applied.
Innovation Solution
An iris module design featuring a magnet holder coupling portion with a protrusion and fastening groove, and auxiliary fastening portions to secure the magnet holder to the holder guide portion, reducing impact and deformation by restricting movement during external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the iris module is applied to a large-diameter model, then the amount of light control capability is improved, but the weight of the iris driver increases causing increased impact on the iris magnet holder
Solution Approach 1:
The iris driver is divided into separate functional modules: the iris main body containing the iris blades for light control, and the magnet holder containing the magnet for driving. This segmentation allows the heavy magnet to be isolated from the iris driver structure, reducing the weight that moves during operation while maintaining light control capability.
Solution Approach 2:
The magnet is extracted from the iris driver structure and placed in a separate magnet holder that is coupled to the holder guide portion. This extraction removes the heavy component from the moving assembly, reducing impact forces while preserving the light control function through the separated iris blade mechanism.
2Illumination intensity
If the entire length of the iris module increases for large-diameter model, then the light control range is improved, but the length from support point to application point increases causing increased force generation and deformation
Solution Approach 1:
The iris module is segmented into the iris main body and the magnet holder coupled to the holder guide portion. This segmentation allows the support point to be positioned at the holder guide portion while the magnet holder is separately coupled, effectively reducing the lever arm length and minimizing force generation during operation while maintaining light control range.
Solution Approach 2:
The holder guide portion acts as an intermediary structure that couples the magnet holder to the iris main body. This intermediary mechanism allows for a more compact arrangement of the support point and application point, reducing the effective length and minimizing deformation forces while preserving the light control functionality.
3Illumination intensity
If the iris module is applied to large-diameter model, then the light control capability is improved, but the degree of deformation and damage increases when external impact is applied
Solution Approach 1:
By segmenting the iris driver into separate modules (iris main body and magnet holder), the structure becomes more resilient to external impacts. The separated design prevents force transmission through the entire module, reducing deformation and damage while maintaining light control capability.
Solution Approach 2:
The magnet holder coupling portion is designed with a coupling structure that provides beforehand cushioning against external impacts. The coupling mechanism absorbs and dissipates impact forces before they can reach the critical iris blade components, preventing deformation and damage while preserving light control functionality.
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 iris module effectively minimizes deformation and damage from external impacts, enhancing the reliability of the camera module by providing a secure mechanism for the magnet holder and iris magnet, allowing the module to withstand stronger forces.
Implementation Method 1
The magnet holder coupling portion includes a protrusion protruding from a side surface of the magnet holder, and a fastening portion formed at the holder guide portion and fastened to the protrusion
Implementation Method 2
a guide main body having a quadrangular frame shape and an edge portion protruding from an edge of the guide main body to guide reciprocal movement of the magnet holder
Data Source
AI summary
An iris module includes an iris main body including a base and a holder guide portion extending from a side surface of the base, a magnet holder seated on the holder guide portion and including an iris magnet, and a magnet holder coupling portion that couples the magnet holder to the holder guide portion. The magnet holder coupling portion includes a protrusion protruding from a side surface of the magnet holder, and a fastening portion formed at the holder guide portion and fastened to the protrusion.