Shield Can Fastening Structure for PCB Impact Resistance
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Solution Overview
Problem
Existing fastening structures for shield cans on printed circuit boards are cumbersome, prone to deformation under impact, and do not effectively minimize height or enhance electromagnetic shielding characteristics.
Innovation Solution
A fastening structure comprising a frame with a fixing part and a shield cover with non-overlapping fastening parts, including first and second fastening parts with specific geometries and heights, allowing for easy attachment and detachment while minimizing the overall height and preventing deformation, and improving electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing fastening structures are used, then the shield can can be attached to the printed circuit board, but the structure becomes cumbersome and prone to deformation under impact
Solution Approach 1:
The fastening structure is divided into multiple discrete fastening parts distributed around the shield can perimeter, allowing each segment to independently absorb impact forces without causing overall structural deformation. This segmentation enables the shield can to maintain integrity while reducing cumulative stress concentration.
Solution Approach 2:
Fastening parts are strategically positioned at specific locations where impact forces are most likely to occur, providing localized reinforcement exactly where needed. This selective placement optimizes impact resistance while minimizing unnecessary structural complexity in areas less susceptible to deformation.
2Length of moving object
If traditional fastening methods are used, then the shield can can be secured to the printed circuit board, but the height of the shield can increases
Solution Approach 1:
The fastening mechanism transitions from a vertical stacking approach to a lateral distribution approach, with fastening parts arranged horizontally around the shield can perimeter rather than stacking vertically. This dimensional reorganization maintains secure attachment while minimizing height increase, achieving slimness without sacrificing reliability.
Solution Approach 2:
The fastening parts are designed with flexible attachment characteristics that allow dynamic adjustment to accommodate minor variations in the printed circuit board surface, ensuring reliable attachment without requiring excessive height for rigid mechanical fasteners.
3Ease of operation
If conventional fastening structures are used, then the shield can can be attached, but easy attachment and detachment cannot be achieved
Solution Approach 1:
The fastening parts are designed with self-aligning features that automatically guide the shield can into the correct position during attachment, eliminating the need for complex alignment procedures or specialized tools. This self-service mechanism simplifies operation while maintaining secure attachment.
Solution Approach 2:
The fastening parts are pre-positioned and pre-configured on the shield can and printed circuit board respectively, so that when brought together, they automatically engage in the correct orientation. This preliminary preparation enables easy attachment and detachment without requiring complex real-time adjustment mechanisms.
Data Source
AI summary
A fastening structure for a shield can is capable of ensuring easy attachment/detachment of the shield can and prevents deformation caused by excessive impact when the shield can is attached and detached by improving the fastening structure for a shield can fixed to a printed circuit board. The fastening structure for a shield can provided to shield a printed circuit board on which electronic components are mounted and the electronic components from electromagnetic waves includes a frame provided with a fixing part allowing the frame to be fixed to the printed circuit board, a shield cover provided to surround an outer side of the frame, fastening parts provided at the shield cover and the frame, respectively, such that the shield cover and the frame are attached/detached to/from each other. The fastening parts and the fixing part are disposed without overlapping each other.