高密度実装基板の白化損傷を防止するプレスイン端子の形状最適化メカデザイン

概要

論文の詳細を見る
In this study, optimum Mech, -design for shape of press-in contact prevented the turning white damage (crazing damage) on high density packaging printed board was examined. In particular, 'Non-damage' method that was prevented craze around thorough-holes on printed board and has high holding force for the contact was proposed. The main results were as follows ; (1) Conventional contacts caused printed board around through-hole the crazing damage. On the other hand, improved contact it no damage. (2) It was understood that crazing damage on printed board was caused by exfoliation between grass-fiber and epoxy resin. These damage on printed board were distributed into following three regions by loaded stress ; (1) Non-damage region, (2) Pre-damage region and (3) Damage region. (3) Maximum normal stress in improved contact was small stress within the 'Non-damage' region which was caused printed board no damage. (4) Improved contact designed by 'Non-damage' method had high reliability for printed board. Because of increase of area of press-fitting portion, this contact didn't only cause printed board no damage around through-hole but also had high holding for the contact.
一般社団法人日本機械学会の論文
2000-08-25