公开(公告)号：US20190101145A1

公开(公告)日：2019-04-04

申请号：US16087145

申请日：2017-03-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： JUNJI FUJIWARA ,  ATSUHIRO KAWAMOTO ,  HITOSHI NISHIMURA ,  YASUSHI MUKAI ,  SHIGEKI YONEMORI

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

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

公开(公告)号：US20190176257A1

公开(公告)日：2019-06-13

申请号：US16326698

申请日：2017-08-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUYA FURUYAMA ,  SHIGEKI YONEMORI ,  ATSUHIRO KAWAMOTO ,  JUNJI FUJIWARA ,  NORIYUKI MATSUOKA

IPC: B23K9/073 ,  B23K9/09 ,  B23K9/133 ,  B23K9/173 ,  B23K9/095

Abstract: A method of controlling arc welding with a consumable electrode includes repeating the following periods in sequence: a short-circuit welding period to perform short-circuit arc welding; a pulse welding period to perform pulse welding; and a cooling period in which the welding current output is zero.

公开(公告)号：US20190047087A1

公开(公告)日：2019-02-14

申请号：US16086996

申请日：2017-03-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： ATSUHIRO KAWAMOTO ,  JUNJI FUJIWARA ,  SHIGEKI YONEMORI

IPC: B23K26/21 ,  B23K26/323 ,  B23K26/324 ,  B29C65/16

Abstract: A joint structure includes a first material (1), a second material (2) weldable to the first material, and a third material (3) at least a portion of which being sandwiched between the first material and the second material, having a through opening portion at the sandwiched portion, and including a material that is difficult to be welded to both the first material and the second material, the first material and the second material welded the via through opening portion. At least one of the first material and the second material is provided with a protrusion (14) inserted in the through opening portion. A first gap (4) is provided between an inner peripheral surface of the through opening portion and the protrusion. A second gap (5) is provided between the first material and the second material, the second gap having a size depending on a plate thickness of the first material in a region corresponding to the protrusion. Under a condition in which the second gap has a size of greater than or equal to 0.1 mm but less than or equal to 40% of the plate thickness of the first material in the region, the first material and the second material are welded by emitting a laser beam from a side on which the first material is disposed.