Invited paper Mechanical and Electrical Analysis of Connector Insertion-Extraction Phase (国際セッションIS--EMD 2003) -- (Session 3 Sliding contacts and connectors)

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Inside a connector an interface with low insertion force and contact resistance is required, utilizing low cost materials such as copper alloys surrounded by tin coating Relating to the application, the operating parameters have a wide range of values of currents, forces and materials In this paper, we present a new experimental method based on non-intrusive probing of the deflection of the spring terminal with a laser technique The main feature is that the reflection of the Laser beam onto the spring allows the determination of the contact force of the lamella-spring inside the female part The technique requires the following insertion parameters during the insertion stroke contact deflection δ, which allows contact force Fc, insertion force Fi and contact resistance Rc It was found that the insertion force has a maximum value which decreases to the stable value, and depends on the size and the material of the pin However contact resistance decreases sharply when first inserting, and tends to stable values on completing the insertion process, which is less sensitive to the pin diameter Furthermore the final value which is important for the connector characterization is related and discussed Finally, discrepancies were observed between the experimental and calculated data with simple numerical models More complex models are in progress, which should improve the convergence of the theoretical approach to experimental results and proceed to the optimization of the connector parameters
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2003-11-13

Invited paper Mechanical and Electrical Analysis of Connector Insertion-Extraction Phase (国際セッションIS--EMD 2003) -- (Session 3 Sliding contacts and connectors)

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