Kobe Steel, Ltd.

Kazuya Yasui

Kenichi Watanabe

Shota Tsubaki

Reiichi Suzuki

Masatoshi Yoshida

Takayuki Kimura

Liang Chen

Masao Hadano

Sadao Miyazawa

Dongyong Shi

Keisuke Nakato

A vehicle body structure includes: a battery disposed at a vehicle body central lower portion, i.e., at a central lower portion of the vehicle body; a side sill of a hollow shape, the side sill disposed at an outer side of the battery in a vehicle width direction and extending in a vehicle longitudinal direction; a reinforcement member disposed inside the side sill, having a closed cross section of a polygonal shape, and having a continuous cylindrical structure where a plurality of the closed cross sections are continuous when viewed in the vehicle width direction; and a deformation control member attached to the reinforcement member and configured to control a deformation of the continuous cylindrical structure of the reinforcement member in the vehicle longitudinal direction.

Vehicle body structure

A vehicle body structure includes a battery disposed in a lower central part of a vehicle body, a hollow side sill extending in a vehicle front-rear direction and disposed outside the battery in a vehicle width direction, and a reinforcing member configuring at least a part of a continuous tubular structure formed inside the side sill. The continuous tubular structure has a shape in which a plurality of octagons are continuously arranged as viewed from the vehicle width direction.

A joint body includes first and second metal members and a joint portion including a welded portion where the first and second metal members are joined together, the welded portion having a line shape. The joint portion includes first and second longitudinal portions and a plurality of connecting portions. The first longitudinal portion has first intersecting portions arranged in a first direction and extends in the first direction. The second longitudinal portion has second intersecting portions arranged in the first direction and extends in the first direction. The welded portion intersects itself at the first and second intersecting portions. The connecting portions are arranged in the first direction. The connecting portions extend in a first direction and connect the first and second longitudinal portions.

Joint body, manufacturing method for joint body, and manufacturing apparatus for joint body

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Kobe, Japan

Kazuya Yasui