公开(公告)号：US20250001481A1

公开(公告)日：2025-01-02

申请号：US18885162

申请日：2024-09-13

Applicant: NHK SPRING CO., LTD.

Inventor： Yoshihito ARAKI ,  Yuusuke FUKUOKA ,  Nobuyuki FURUGORI

IPC: B21J15/02

Abstract: A novel punch for riveting with reduced load on a shaft of a rivet is provided. Alternatively, a device that is disposed with a novel punch for riveting with reduced load on a shaft of a rivet is provided. Alternatively, a method for joining members using a novel punch for riveting with reduced load on a shaft of a rivet is provided. A punch for riveting according to an embodiment of present invention includes joining a first member having a convex part and a second member having a through hole fitting with the convex part by plastically deforming the convex part, wherein a contact surface with the convex part is inclined in a range of 80° to 89° with respect to a center axis.