Bulged Electrical Contact Retention via Segmented Through Holes
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Solution Overview
Problem
Existing electrical contacts for printed circuit boards with bulged retention sections require complex manufacturing methods to achieve a superior retention function, which is undesirable.
Innovation Solution
An electrical contact with a compliant tail having a pair of opposite main faces and side faces, featuring elongated first through holes and second through holes, is stamped from shell metal to provide a simple manufacturing method for effective retention within a through hole, utilizing a bulged configuration for engagement with the hole's interior surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex hole arrangements are used on the bulged retention section, then the retention function is improved, but the manufacturing complexity increases
Solution Approach 1:
The retention section is divided into multiple through holes (first through holes and second through holes) with different configurations. The first through holes are elongated while the second through holes are circular, creating segmented functional zones that together provide superior retention without requiring overly complex manufacturing
Solution Approach 2:
Different regions of the retention section have different hole configurations tailored to local requirements. The elongated first through holes provide retention in one direction while the circular second through holes provide retention in perpendicular directions, optimizing the retention function locally across different areas of the contact
2Ease of manufacture
If simple stamping manufacturing is used, then the manufacturing simplicity is improved, but the retention function may be compromised
Solution Approach 1:
The through holes are pre-formed in the stamped contact body before insertion into the PCB. This preliminary formation of precise hole patterns in the stamped piece allows the contact to be simply manufactured via stamping while still achieving reliable retention through the pre-configured hole arrangement that engages with the PCB interior surface
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 enables a reliable and efficient retention function in printed circuit boards through a straightforward manufacturing process, ensuring secure engagement without the need for intricate manufacturing techniques.
Implementation Method 1
The opposite first side face and second side face are bulged for elastically pressing an interior surface of a positioning hole
Data Source
AI summary
An electrical contact includes a compliant tail defining a pair of opposite first main face and second main face, and a pair of opposite first side face and second side face linked between the first main face and the second main face. The opposite first side face and second side face are bulged for engagement with an interior surface of the corresponding through hole. A pair of first through holes and a pair of second through holes extend through both the first main face and the second main face. The first through holes are configured with an elongated configuration while the second though holes are located around two opposite upper and lower ends of the first through holes.