Camera Module Plastic Barrel Buffering Leaf Spring Gap
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Solution Overview
Problem
Current camera modules with leaf spring configurations in electronic devices face mechanical interference and abnormal sounds due to the movement of plastic barrels, which affects the autofocus function and overall performance.
Innovation Solution
A camera module design incorporating a metal yoke, holder, plastic barrel with buffering parts, and metal conducting elements, including leaf springs with specific gap distances and elastic structures, to prevent mechanical interference and abnormal sounds while maintaining autofocus functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the plastic barrel moves over the moving range in the conventional design, then the autofocus function is achieved, but mechanical interference and abnormal sounds occur
Solution Approach 1:
The patent introduces a buffering part on the plastic barrel that contacts the leaf spring before the plastic barrel reaches the end of its moving range. This buffering part acts as a cushioning mechanism that stops the plastic barrel's movement in advance, preventing mechanical interference and abnormal sounds while allowing the autofocus function to operate within a controlled range.
2Adaptability or versatility
If the moving range of the plastic barrel is increased, then the autofocus capability is improved, but mechanical interference occurs
Solution Approach 1:
The buffering part is positioned to contact the leaf spring before the plastic barrel reaches the end of its moving range. This preliminary action of the buffering part stopping the movement in advance prevents mechanical interference while allowing the plastic barrel to achieve sufficient moving range for autofocus capability.
3Reliability
If the gap distance between the buffering part and leaf spring is reduced, then the buffering effect is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that the gap distance between the buffering part and the leaf spring should be within 0.05mm to 0.15mm. This parameter optimization balances the buffering effect with manufacturing feasibility, ensuring reliable buffering while maintaining acceptable manufacturing precision.
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 solution effectively prevents mechanical interference and abnormal sounds by ensuring the plastic barrel stops within a controlled distance, maintaining the autofocus function and reducing mechanical stress, thus enhancing the camera module's performance and reliability.
Implementation Method 1
The metal conducting elements are at least one leaf spring and a wire element, wherein the metal conducting elements are connected to the plastic barrel
Implementation Method 2
Before the at least one buffering part contacts a contacting part of the at least one leaf spring, a gap distance between the at least one buffering part and the contacting part of the at least one leaf spring is d
Data Source
AI summary
A camera module includes a metal yoke, a holder, a plastic barrel, a plurality of plastic lens elements and a plurality of metal conducting elements. The holder is connected to the metal yoke for forming an inner space. The plastic barrel is movably disposed in the inner space and includes at least one buffering part. The plastic lens elements are disposed in the plastic barrel. The metal conducting elements are at least one leaf spring and a wire element, wherein the metal conducting elements are connected to the plastic barrel. Before the at least one buffering part contacts a contacting part of the at least one leaf spring, there is a gap distance between the at least one buffering part and the contacting part of the at least one leaf spring.