公开(公告)号：US20220241843A1

公开(公告)日：2022-08-04

申请号：US17646199

申请日：2021-12-28

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Keisuke UCHIDA ,  Yuya SEGAWA ,  Satoshi YAMADA ,  Tomoharu HARADA ,  Naoki NISHIKAWA ,  Hidekatsu ONODERA

IPC分类号： B21J15/36 ,  F16B5/04

摘要： A joining device comprises a die and driving means. A first concave portion is recessed in a substantially cylindrical shape in a driving direction on the die, and a second concave portion is recessed in the driving direction in a central portion on a bottom face of the first concave portion. A portion on an external side of the second concave portion on the bottom face of the first concave portion forms a terrace portion that is shallower than the second concave portion, and a diameter of the foot portion of the self-piercing rivet corresponds to a diameter of the terrace portion. In driving the foot portion of the self-piercing rivet toward the terrace portion of the first concave portion, the foot portion of the self-piercing rivet is spread outward by the terrace portion and a part of the members to be joined runs into the second concave portion.