電流通電機構の接触面における通電点の観測

摘要

近年，電子機器の機能が進化し，電子基盤のセンサや素子などの電子部品および接続配線が増加する傾向にあり，それらを接続するために接続コネクタが数多く使用される.現在の電気接触機構には，接触信頼性向上と長寿命化が強く求められている.これらコネクタ等の電気的接続部晶においては，接触部分の接触抵抗の変化が製品性能および製品の寿命に大きく影響する.このため，接触部分でおこる接点材料の表面変化を解明し，接触抵抗の増加現象の過程を明らかにすることが重要である.本研究は，接触点で生じる発熱と接触点形状の変化がおよぼす接触抵抗増加への影響について着目し，実験および有限要素法を用いて接触不良発生メカニズムを考察した.%In recently years, a lot of electronic sensor and connected wirings are used in several electronic equipment. These connectors are used to connect between electrical parts. As for the electric contact mechanism, the contact reliability and long-life of electric contact part is required. In these connectors, the contact resistance in the contact area greatly influences to product performance and long-life of contact equipment. A remarkable amount of miniaturization has occurred in electrical equipment. However, this has lead to problems involving reduced contact pressure at electrical contacts, sometimes leading to contact failure. Therefore, it is important to clarify the surface change in the contact point of contact materials, and to clarify the process of the increasing contact resistance. In this study, we focus on heat generation and mechanical deformation at the contact surface. The contact failure mechanism was considered by using the experiment and the finite element method (FEM).