Camera Module Shield Can Grounding With Elastic Bracket Contact
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Solution Overview
Problem
The existing camera module designs face challenges in maintaining a stable electrical connection between the shield can and the bracket due to manufacturing and assembly tolerances, which can lead to interference issues and require additional equipment or increased processing time for conductive materials like tape or epoxy.
Innovation Solution
A camera module design that incorporates an elastic structure made of conductive and non-magnetic material, which is engaged with the bracket to generate an elastic force that presses the shield can in place, ensuring a stable electrical connection without the need for separate equipment and minimizing processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive tape or conductive epoxy is used to ensure electrical connection between shield can and bracket, then electrical connection reliability is improved, but device complexity and manufacturing time increase
Solution Approach 1:
The bracket and shield can are integrated into a single unified structure, eliminating the need for separate conductive materials like tape or epoxy. The bracket itself provides both mechanical support and electrical connection functions, reducing device complexity while maintaining electrical connection reliability.
Solution Approach 2:
The bracket is designed to perform multiple functions simultaneously: mechanical support for the shield can, positioning alignment, and electrical connection grounding. This multi-functionality eliminates the need for additional components and reduces manufacturing complexity.
2Reliability
If conductive epoxy is applied between shield can and bracket, then electrical connection is improved, but manufacturing time increases due to curing requirement
Solution Approach 1:
The bracket and shield can are merged into an integrated structure where electrical connection is achieved through direct metal-to-metal contact via protrusions and grooves, eliminating the need for conductive epoxy and its associated curing time.
Solution Approach 2:
The chemical bonding process of conductive epoxy is replaced with a mechanical interlocking system using protrusions and grooves that provide immediate electrical connection without requiring curing time.
3Ease of manufacture
If shield can is not electrically connected to bracket due to manufacturing tolerance, then assembly is simpler, but electromagnetic shielding effectiveness deteriorates
Solution Approach 1:
The electrical connection system incorporates elastic protrusions that can deform elastically to accommodate manufacturing tolerances and assembly variations, ensuring continuous electrical contact between the shield can and bracket while maintaining electromagnetic shielding effectiveness.
Solution Approach 2:
The design anticipates manufacturing tolerance issues by incorporating elastic deformation capability in the protrusions, which beforehand compensates for potential gaps or misalignments, ensuring reliable electrical connection and electromagnetic shielding without requiring overly tight tolerances.
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 stabilizes the electrical connection between the shield can and the bracket, aligns the shield can in the correct position, and maintains electromagnetic compatibility without requiring additional equipment or increasing manufacturing time.
Implementation Method 1
an elastic structure 460 of which at least a portion is connected to the bracket 450 to be positioned between the shield can 440 and the bracket 450 and which is configured to generate an elastic force which presses the shield can 440 in one direction
Implementation Method 2
the shield can 440 is electrically connected to the bracket 450 by the elastic structure 460
Implementation Method 3
which is formed of a conductive and non-magnetic material
Data Source
AI summary
An electronic device includes a housing defining an inner space, and a camera module fixed to the housing. The camera module includes a bracket fixed to the housing and including an accommodation space defined therein. Within the accommodation space is a lens and an actuator which adjusts a position of the lens, a shield can which covers the actuator, and an elastic structure which electrically connects the shield can to the bracket. The elastic structure includes an elastic portion which is between the shield can and the bracket and provides an elastic force to the shield can. The shield can and the bracket are electrically connected to each other at the elastic portion of the elastic structure.