Honda Motor Co., Ltd.

Uacj Corporation

Jfe Steel Corporation

Nippon Light Metal Company, Ltd.

Naoki Takaki

Tomohide Sekiguchi

Ryo Kita

Keiichiro Tsuji

Yoshitaka Okitsu

Tatsuo Inagaki

Tomoya Yokota

Takeshi Fujita

Kaneharu Okuda

Shusaku Takagi

Yoshikiyo Tamai

Shoji Mochizuki

Shinichiro Sumi

Tadashi Naito

Masato Yatsukura

Jie Xing

Nao Sugimoto

Peizheng Lin

Tomoaki Sugiura

A shock absorbing member of the present disclosure is a shock absorbing member including a first hollow member () and a second hollow member () that are made of aluminum alloy and are weld joined to each other, in which a weld material and weld beads (W) do not project from a side on which a joined surface between the first hollow member () and the second hollow member () is located.

Shock-absorbing member

A bumper structural body () includes a bumper reinforcement (), energy absorbing members (), and intermediate members (). The sloped sections () of the bumper reinforcement () are connected to the energy absorbing members () and the intermediate members (). The intermediate members () are each formed in a quadrilateral by connecting a first portion () contacting the energy absorbing member (), a second portion () contacting the bumper reinforcement (), and portions connecting the first portion () and the second portion ().

Bumper structural body

A high proof stress aluminum alloy extrusion material having superior bendability and crack resistance. The high proof stress aluminum alloy extrusion material is an aluminum alloy comprising: 5.0 to 7.0 wt % of zinc; 0.5 to 1.5 wt % of magnesium; 0.05 to 0.3 wt % of copper; no greater than 0.15 wt % of zirconium; 0.1 to 0.4 wt % of iron; 0.05 to 0.4 wt % of silicon; with the balance being Al and impurities, in which at least 90% of a metallographic structure is a recrystallized structure.

High proof stress Al&#x2014;Zn aluminum alloy extrusion material superior in bendability

A vehicle collision energy absorbing member is excellent in collision energy absorbing performance in the axial direction upon collision. The vehicle collision energy absorbing member is formed of a high strength thin steel sheet having TS of at least 980 MPa and having an n-value and a limit bending radius Rc satisfying the following Formula: Rc/t&#x2266;1.31&#xd7;ln(n)+5.21.

Vehicle collision energy absorbing member excellent in energy absorbing performance and manufacturing method therefor

A high-strength steel sheet having high strength and ability to absorb impact energy to a high degree is formed into a strengthening member for an vehicle, having both superior energy absorption efficiency and bonding properties. The high-strength member has a high-strength steel sheet having not less than 5000 MPa of gradient du/de of a stress-strain diagram in a range of 3 to 7% of true strain obtained in a tension test, and a steel sheet having 0.3 to 0.85 of tension strength ratio against tension strength of the high-strength steel sheet, the steel sheets bonded at their ends with space extending in a prescribed direction between the steel sheets, and a load is to be applied on the member from the prescribed direction when the member is acted upon.

High-strength member for vehicle

Growing community of inventors

Saitama, Japan

Naoki Takaki