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Invention Application
WO2022210510A1 締結体並びにこれを用いた接合構造体および接合方法 审中-公开

締結体並びにこれを用いた接合構造体および接合方法
Abstract:
締結体（１）は、第１部材（４１）と第２部材（４２）との重なり部（４５）に形成される摩擦撹拌部（５０）に第１部材（４１）側から圧入される。締結体（１）は、摩擦撹拌部（５０）の表面に配置される頭部（１１）と、頭部（１１）から第２部材（４２）側に延びる筒状の軸部（４２）とを備える。軸部（１２）は、圧入時に当該軸部（１２）の先端部（１２ａ）が拡径するのを促進する促進部（１５）を有する。
Abstract(English):

This fastening body (1) is press-fitted, from a first-member (41) side, into a friction-welded part (50) that is formed at an overlap part (45) between the first member (41) and a second member (42). The fastening body (1) comprises a head part (11) disposed on the surface of the friction-welded part (50), and a tubular shaft part (42) extending from the head part (11) toward the second member (42). The shaft part (12) has a promotion part (15) that promotes spreading of a distal-end section (12a) of the shaft part (12) during press-fitting.

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