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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10981246 B1

PDFFull Text
Date of Patent:
Apr. 20, 2021

Filed:

Mar. 28, 2017

Laser welding method

Applicant:

Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;

Inventors:

Atsuhiro Kawamoto, Hyogo, JP;

Junji Fujiwara, Osaka, JP;

Yasushi Mukai, Osaka, JP;

Hitoshi Nishimura, Osaka, JP;

Assignee:

Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Brian W Jennison

Int. Cl.
CPC ...
B23K 26/21 (2014.01); B29C 65/16 (2006.01); B23K 26/324 (2014.01); B23K 26/323 (2014.01); B23K 26/244 (2014.01); B23K 26/22 (2006.01); B23K 11/30 (2006.01); B23K 103/16 (2006.01); B23K 103/22 (2006.01); B23K 103/20 (2006.01);
U.S. Cl.
CPC ...
B23K 26/21 (2015.10); B23K 11/30 (2013.01); B23K 26/22 (2013.01); B23K 26/244 (2015.10); B23K 26/323 (2015.10); B23K 26/324 (2013.01); B29C 65/16 (2013.01); B23K 2103/172 (2018.08); B23K 2103/20 (2018.08); B23K 2103/22 (2018.08);
Abstract

A laser welding method according to the present disclosure includes a step in which a third material is interposed between a first material and a second material, which are made of the same type of metal so as to be weldable to one another, and at least one of which is provided with a protruding portion, wherein the third material is difficult to weld to the first material and the second material and has a through-hole portion into which the protruding portion is inserted. The method also includes a step in which, when the third material is interposed between the first material and the second material, a region corresponding to the protruding portion is irradiated with a laser beam from the first material side, and the first material and the second material are welded via the through-hole portion. In the step in which the third material is interposed between the first material and the second material, a first gap is provided between the protruding portion and the inner peripheral face of the through-hole portion, and a second gap corresponding to the plate thickness of the first material is provided between the first material and the second material in the region corresponding to the protruding portion.

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