133 銅極細線の端子固定のためのマイクロメカニカル接合法(塑性加工とその周辺技術)

概要

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The downsizing of the electronic devices has been achieved by downsizing of the electronic power modules and the circuits for high-frequencies. Those modules require the more miniaturizations in the solenoid parts, e,g, choke coil, or transformer. The so-called micro solenoids are expected to be made by winding the ultra-fine electronic wire with diameter of several tens of micrometers. But the ultra-fine electronic wire has less tensile and bending strength and melt during the conventional soldering process. Therefore, besides the ultrasonic bonding and the soldering, a new fixing method is developed for the ultra-fine electronic wire. The proposed method is called the micro-mechanical joining, by which the ultra-fine wire is mechanically held to the electronic terminal. The detailed method including the shape of the terminal and the protocol is described in this article. The smallness in the wire distortion is shown. The joint strength tests are conducted and the enough strength comparable to that of the base metal wire is obtained.
一般社団法人日本機械学会の論文
2009-11-06