すずめっき接点を用いた繰り返し開閉時の接触荷重一接触抵抗特性

摘要

車載用のコネクタ端子においては基本的な特性である接触荷重一接触抵抗特性が重要である。車載用コネクタと同じすずめっきを用いた接点を繰り返し開閉した際に接触抵抗が上昇していく傾向が見られた。本研究ではこの接触荷重一接触抵抗特性についてめっき厚、接触荷重、接触速度、電流及び電圧をパラメータとして検討を行った。また、接点の開離直前に接触抵抗が急峻に低下する特性を確認したのでここに報告する．%Load-contact resistance characteristic is important in connector terminal of vehicle. The tendency which the contact resistance raised when the point of contact that used the same tin plating as the connector of vehicle was repeatedly opened and shut was seen. We examined about the load-contact resistance characteristic when the thickness of plating, the contact load, the contact speed, the current, and the voltage were as a parameter. Moreover, the characteristic to which the contact resistance decreased steep immediately before when the point of contact opened was confirmed.