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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 10071774 B1

PDFFull Text
Date of Patent:
Sep. 11, 2018

Filed:

May. 25, 2015

Joining structure for member in vehicle body

Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Michitaka Yoshida, Amagasaki, JP;

Atsushi Tomizawa, Nago, JP;

Kazuo Uematsu, Futtsu, JP;

Assignee:

NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jonathan Peter Masinick

Int. Cl.
CPC ...
B62D 27/02 (2006.01); F16B 5/08 (2006.01); B21D 7/08 (2006.01); B21D 7/16 (2006.01); B23K 9/00 (2006.01); B23K 11/00 (2006.01); B23K 26/24 (2014.01); B62D 25/04 (2006.01); B62D 25/06 (2006.01); B62D 65/02 (2006.01); B23K 11/11 (2006.01); B23K 26/21 (2014.01); B23K 31/02 (2006.01); C21D 1/18 (2006.01); B23K 101/00 (2006.01);
U.S. Cl.
CPC ...
B62D 27/023 (2013.01); B21D 7/08 (2013.01); B21D 7/162 (2013.01); B23K 9/0026 (2013.01); B23K 11/002 (2013.01); B23K 26/24 (2013.01); F16B 5/08 (2013.01); B23K 9/00 (2013.01); B23K 11/11 (2013.01); B23K 26/21 (2015.10); B23K 31/02 (2013.01); B23K 2201/006 (2013.01); B62D 25/04 (2013.01); B62D 25/06 (2013.01); B62D 65/02 (2013.01); C21D 1/18 (2013.01);
Abstract

Not only a reduction in the load resistant performance of a structural member in a vehicle body having a quenched portion with a tensile strength of 1,470 MPa or greater, but also a reduction in the shock absorbing performance associated with the HAZ softening by welding are suppressed. In a joining structure () for a member in a vehicle body in which a first member () that is made of steel, has a closed hollow cross-section having no outward flange, and is provided with a quenched portion having a tensile strength of 1,470 MPa or greater, a base material portion having a tensile strength of less than 700 MPa, and a transition portion () between the quenched portion () and the base material portion () in a longitudinal direction thereof, and a second member () that is made of steel and overlaps the first member () are welded to each other in an overlapping portion, the overlapping portion exists over the base material portion () from the quenched portion () of the first member () through the transition portion (), and a welding portion () formed by welding exists in the transition portion () or the base material portion () in the first member ().

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