公开(公告)号：US20220388386A1

公开(公告)日：2022-12-08

申请号：US17783508

申请日：2021-02-04

Applicant: NIPPON STEEL CORPORATION

Inventor： Hiromi ASAMA ,  Junichiro SUZUKI

IPC: B60K1/04 ,  H01M50/20 ,  B62D25/20 ,  B62D21/15

Abstract: A tray (20) including a bottom wall (21) and a peripheral side wall (22) erected from an outer periphery of the bottom wall (21) includes a high-strength portion HT having a high tensile strength; and a low-strength portion LT having a tensile strength lower than that of the high-strength portion HT. The low-strength portion LT includes a recessed portion (C) having a corner portion (22C) in a first side wall inner surface (221a) and a second side wall inner surface (222a) which are adjacent to each other at a minor angle and a corner section (21C) on an upper surface (21a) of the bottom wall (21) having a minor angle to each of the first side wall inner surface (221a) and the second side wall inner surface (222a).

公开(公告)号：US20240270325A1

公开(公告)日：2024-08-15

申请号：US18563240

申请日：2022-05-25

Applicant: NIPPON STEEL CORPORATION

Inventor： Masahiro KUBO ,  Shunji HIWATASHI ,  Yutaka MIKAZUKI ,  Koichi SATO ,  Takahiro AITOH ,  Kengo TAKEDA ,  Katsuya NAKANO ,  Yuri TODA ,  Shinichiro TABATA ,  Kodai MURASAWA ,  Daisuke MAEDA ,  Kazuo HIKIDA ,  Kazuhisa KUSUMI ,  Shingo FUJINAKA ,  Jun HAGA ,  Ryo TABATA ,  Ryoma KATO ,  Mitsuharu YAMAGATA ,  Toshiyuki NIWA ,  Hiromi ASAMA ,  Junichiro SUZUKI ,  Yasunori ITO

IPC: B62D29/00 ,  B23K11/11 ,  B23K103/04 ,  C21D7/13 ,  C21D9/46 ,  C22C38/60

CPC classification number: B62D29/007 ,  B23K11/11 ,  C21D7/13 ,  C21D9/46 ,  C22C38/60 ,  B23K2103/04 ,  C21D2211/002 ,  C21D2211/008

Abstract: What is provided is an automobile body in which batteries, tires, and liquids containing water and oil are removed from a public road vehicle with superior collision safety, the public road vehicle comprising at least a steel material containing a steel sheet with a tensile strength of 1180 MPa or higher, a non-ferrous metal material, and a resin material, wherein



the ratio of a mass mh (kg) of the steel sheet having a tensile strength of 1180 MPa or higher to a mass m (kg) of the automobile body is 9% or higher, and
a mass m (kg) of the automobile body and a projected area s (m2) of the automobile body from an upper side satisfy a formula (1) and a formula (2)











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