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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 10717153 B1

PDFFull Text
Date of Patent:
Jul. 21, 2020

Filed:

Jul. 26, 2017

Laser welding method for flat wires

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventor:

Hideo Nakamura, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;

Attorney:

Hunton Andrews Kurth LLP

Primary Examiner:

Brian W Jennison

Int. Cl.
CPC ...
B23K 26/06 (2014.01); H02K 3/28 (2006.01); B23K 26/073 (2006.01); B23K 26/22 (2006.01); H01R 4/02 (2006.01); H02K 15/00 (2006.01); H02K 15/085 (2006.01); B23K 101/32 (2006.01); B23K 101/38 (2006.01);
U.S. Cl.
CPC ...
B23K 26/0604 (2013.01); B23K 26/0736 (2013.01); B23K 26/22 (2013.01); H01R 4/021 (2013.01); H01R 4/029 (2013.01); H02K 3/28 (2013.01); H02K 15/0081 (2013.01); H02K 15/085 (2013.01); B23K 2101/32 (2018.08); B23K 2101/38 (2018.08); H01R 4/026 (2013.01);
Abstract

Provided is a laser welding method for flat wires in which side surfaces at ends of first and second flat wires coated with insulating films, the side surfaces being stripped of the insulating films, are butted together, and a laser beam is applied to end surfaces of the first and second flat wires to weld together the side surfaces. This method includes: applying the laser beam in a loop shape inside the end surface of the first flat wire to form a molten pool; and gradually increasing the diameter of a loop-shaped application trajectory of the laser beam inside the end surface of the first flat wire to allow the molten pool to reach the side surfaces.

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