公开(公告)号：US20210388859A1

公开(公告)日：2021-12-16

申请号：US17459377

申请日：2021-08-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Junji FUJIWARA ,  Atsuhiro KAWAMOTO ,  Hitoshi NISHIMURA ,  Yasushi MUKAI ,  Shigeki YONEMORI

IPC: F16B5/08 ,  B23K9/02 ,  B23K9/167 ,  B23K10/02 ,  B23K9/173

Abstract: A joint structure includes a first metallic material having a first projection, a second metallic material similar to and weldable to the first metallic material, and a different material having a first penetrating part and sandwiched between the first and second metallic materials, the different material being difficult to weld to the first and second metallic materials. The first projection is smaller than the first penetrating part and is spaced from the rim of the first penetrating part. The first projection is positioned in the first penetrating part and spaced from the second metallic material by a gap. The gap has a size of a predetermined percentage of the thickness of the first projection to which arc welding is applied. The first and second metallic materials are melted and joined together inside the first penetrating part to compress and fix the different material, so all three are fixed together.