Photographing Module Elastic Member Local Quality Design
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Solution Overview
Problem
Existing photographing modules with voice coil motors face challenges in miniaturization due to elastic members that easily rupture and experience poor electrical contact, leading to increased production costs and reduced stiffness.
Innovation Solution
The photographing module features an elastic member with varying thicknesses for different portions, allowing for enhanced stiffness and stability, with power supply terminals formed integrally to reduce assembly complexity and eliminate soldering steps, and an insulating layer to prevent electrical communication with other metal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the elastic member is thinned to facilitate miniaturization, then the size of the photographing module is reduced, but the elastic member becomes more prone to rupture due to reduced stiffness
Solution Approach 1:
The elastic member is designed with non-uniform thickness distribution, where different regions have different thicknesses to provide locally optimized mechanical properties. The thicker regions provide necessary stiffness and strength to prevent rupture, while thinner regions facilitate overall miniaturization of the photographing module.
Solution Approach 2:
The thickness parameter of the elastic member is varied across different regions rather than maintaining a uniform thickness. This parameter change allows the elastic member to achieve both miniaturization and adequate stiffness, resolving the contradiction between size reduction and strength maintenance.
2Volume of moving object
If the power supply terminals are made thinner to reduce size, then the overall module size is reduced, but electrical contact becomes poor and assembly becomes difficult
Solution Approach 1:
The power supply terminals are designed with varying thicknesses where specific regions are thicker to ensure good electrical contact and assembly, while other regions are thinner to reduce overall size. This local quality differentiation resolves the contradiction between miniaturization and electrical contact reliability.
3Ease of manufacture
If the elastic member has uniform thickness to simplify manufacturing, then manufacturing is easier, but the power supply terminals lack sufficient stiffness and rupture easily
Solution Approach 1:
Instead of uniform thickness, the elastic member and power supply terminals are designed with non-uniform thickness distribution. This allows thicker sections to provide necessary stiffness and strength for reliable electrical contact, while maintaining relatively simple manufacturing processes through techniques like stamping or molding with variable thickness.
4Volume of moving object
If the elastic member is thinned to reduce size, then miniaturization is achieved, but production costs increase due to higher rupture rates
Solution Approach 1:
The non-uniform thickness design of the elastic member strategically places thicker regions at critical stress points and thinner regions where size reduction is most beneficial. This optimizes the balance between miniaturization and reliability, reducing rupture rates during assembly and production while maintaining compact dimensions.
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 enhances the stability and stiffness of power supply terminals, reduces production costs, and improves electrical contact, facilitating miniaturization while minimizing the risk of rupture and assembly difficulties.
Implementation Method 1
an electrically controlled actuator 9 connected to the lens unit 8... When an external power source (not shown) is coupled to the pair of power supply terminals 12, power will flow sequentially through the terminals 12 and the elastic member 10 to the electrical unit 93 of the actuator 9, thereby leading to an axial displacement of the movable element 92
Data Source
AI summary
This invention provides a photographing module at least including an electrically controlled actuator, an elastic member, and a photo sensor. The electrically controlled actuator at least comprises a fixed element, a movable element, and an electrical unit and at least provides an axial displacement, wherein the movable element is connected to the lens unit and the electrical unit electrically communicates with the elastic member. The elastic member at least comprises a fixed portion, a movable portion, an elastic portion, and a pair of power supply terminals, wherein the fixed portion and the movable portion are respectively connected to the fixed element and the movable element. The photo sensor is positioned on an image side of the photographing module and connected to the fixed member. The various portions of the elastic member may have different thicknesses depending on desired stiffness of each portion, such that the elastic member is thinned so as to facilitate miniaturization of the photographing module.