Optical Element Driving Mechanism With Segmented Contacts
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Solution Overview
Problem
In optical element driving mechanisms, existing welding processes often cause previously welded contacts to detach due to heat application, and excessive mounting strength can damage the driving mechanism during assembly.
Innovation Solution
The proposed solution involves a driving mechanism with a base unit, a holding unit, an elastic element, and a driving assembly, where the base unit includes a connecting member with separate contacts that are electrically isolated from each other and connected to a circuit unit, preventing interference during welding and enhancing structural strength through insert molding and protruding structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple welding steps are performed to connect electrical contacts, then electrical connections are established, but previously welded contacts become detached due to heat application
Solution Approach 1:
The patent divides the electrical connection system into separate segments: the connecting member with its own contacts is separated from the housing with separate contacts. This segmentation allows each welding operation to be isolated and performed independently without affecting other welded joints, thus establishing electrical connections while maintaining contact stability during the manufacturing process.
2Strength
If mounting strength is increased to secure the driving mechanism, then structural stability is improved, but the driving mechanism becomes damaged due to excessive mounting strength
Solution Approach 1:
The patent segments the mounting structure into a base unit that receives the driving mechanism and a separate housing that provides mounting attachments. This segmentation allows the mounting strength to be concentrated at the housing level while the base unit provides a protected, stable environment for the driving mechanism, preventing damage from excessive mounting forces.
Solution Approach 2:
The patent implements beforehand cushioning by designing the base unit with a structure that absorbs and distributes mounting forces before they reach the driving mechanism. The base unit acts as a cushioning element that protects the driving mechanism from excessive mounting strength, ensuring structural stability without causing damage.
3Volume of moving object
If contacts are positioned close together to reduce base unit size, then compactness is improved, but welding heat affects adjacent contacts causing detachment
Solution Approach 1:
The patent applies segmentation by creating two separate contact systems: contacts on the connecting member and corresponding contacts on the housing. This segmentation allows adequate spacing between welded contacts while maintaining overall compactness, as each welding operation occurs at distinct locations rather than requiring multiple contacts in close proximity on a single component.
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 prevents contact detachment during welding and enhances the structural integrity of the driving mechanism, allowing for reliable auto-focusing functions and improved mechanical strength, reducing the risk of damage from excessive mounting forces.
Implementation Method 1
The elastic element connects the holding unit to the base unit
Implementation Method 2
the connecting member is formed in the body by insert molding
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a housing, a base unit, a holding unit, a driving assembly, and a metal component. The base unit is connected to the housing. The holding unit is configured to hold an optical element having an optical axis and movable relative to the housing and the base. The driving assembly is configured to drive the holding unit to move relative to the housing and the base unit. The metal component is disposed in the base unit, wherein at least a portion of the metal component is connected to the driving assembly.