Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Yutaka Mikazuki

Kenji Yamamoto

Riki Okamoto

Yasunori Ito

Seiya Ishii

Masahiro Nakata

Atsushi Ono

Shinji Kodama

Eiji Isogai

Nobusato Kojima

Toshiyuki Niwa

Mitsuharu Yamagata

Katsunari Norita

Takashi Ariga

Yoshiyuki Kaseda

Soma Sonobe

Sho Matsui

Kyohei Miyake

Takashi Oke

An under body structure of an automobile enabling batteries to be mounted on an automobile by a simple configuration and efficiently transferring load at the time of a collision, that is, an under body structureof an automobile provided with a body floorforming a floor part of the automobile and batteries(battery cells or battery modules) directly suspended from and fastened to a bottom side of the body floor

Under body structure of automobile

A lateral surface member structure () of a vehicle body () includes a tubular body () extending in a front-rear direction of the vehicle body () and an impact absorbing member () disposed inside the tubular body (). The impact absorbing member () includes a web () extending along the front-rear direction and flat in a vehicle width direction, a vehicle outer flange () joined to a vehicle outer end portion of the web () and extending along the front-rear direction, and a vehicle inner flange () joined to a vehicle inner end portion of the web () and extending along the front-rear direction. The vehicle outer flange () and the vehicle inner flange () each include a rib (R,R) disposed so as to sandwich the web () from above and below and extending along the front-rear direction.

Lateral surface member structure of vehicle body

A closed cross-sectional structure member includes a hollow member, the hollow member having a collision side wall part located on a collision side, an opposed collision side wall part opposing the collision side wall part, a pair of first side wall part and second side wall part connecting with end portions of the collision side wall part and end portions of the opposed collision side wall part, a first inner wall part extending from the first side wall part to an inside of the hollow member, a second inner wall part extending from the second side wall part to the inside of the hollow member, a third inner wall part connecting with the first inner wall part and the collision side wall part, and a fourth inner wall part connecting with the second inner wall part and the collision side wall part.

Closed cross-sectional structure member having high collision performance and automobile body structure

In an impact-absorbing member which extends in a vehicle length direction of an automobile and whose both end portions in the vehicle length direction have a collision-side end portion and a non-collision-side end portion whose positions become mutually different when seen from the vehicle length direction, an outer member and an inner member of the impact-absorbing member are formed so that a position of a gravity center at the collision-side end portion and a position of a gravity center at the non-collision-side end portion become mutually different according to a positional relationship between the collision-side end portion and the non-collision-side end portion in order to suppress a tensile stress generated at the collision-side end portion and suppress a compressive stress generated at the non-collision-side end portion in a collision.

Impact-absorbing member and side member of automobile

This supporting structure for an underrun protector includes a stay body that connects a beam and a frame to each other; a stay reinforcing body that reinforces the stay body from an outside in a vehicle width direction; and a gusset provided between the stay reinforcing body and the beam. A stay body web face of the stay body is provided with an opening part. A pair of wall face parts provided to extend outward in the vehicle width direction from both ends of the opening part in a vehicle forward-rearward direction is provided so as to face each other. Each of the wall face parts is provided at a height corresponding to an installation position of the gusset and abuts against an inner surface of the stay reinforcing body in the vehicle width direction.

Supporting structure for underrun protector

A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.

Production method of wheel rim, and production method of vehicle wheel rim

The present invention provides a method of manufacturing a press-formed product. The method includes: a first process of preparing a material that is long in a first direction, and when viewed in a cross-section perpendicular to the first direction, the cross-section is a hollow cross-section that is long in a second direction perpendicular to the first direction; and a second process of bending the material in a direction intersecting the second direction when viewed from the first direction, by pressing the material along the second direction.

Method of manufacturing press-formed product, and press-formed product

[Object] To improve load resistance performance in response to collision. [Solution] An end structure of a vehicle according to the present invention includes: a beamthat extends in a vehicle width direction; and a connecting structurethat connects the beamto a vehicle body frame. In a cross-sectional view perpendicular to the vehicle width direction, the beamincludes a first top surface partand a first bottom surface partwhich face each other, a first side surface partthat connects one ends of the first top surface partand the first bottom surface part, and first flange partsthat are formed to protrude vertically outwardly at the other ends of the first top surface partand the first bottom surface part. The beamis fixed to the connecting structureby at least one of bonding of a protrusionthat is provided in the connecting structureand is arranged to protrude inside the beamto the first top surface partand the first bottom surface partand bonding of a beam attachment member provided in the connecting structureto the first flange parts

End structure of vehicle

In performing burring processing on a sheet-like member, the following processes are performed: a punching process of performing punching processing of the sheet-like member; a hole expansion process of performing hole expansion processing of a punched hole formed by the punching process; a re-punching process of performing punching processing again on a portion surrounding the punched hole expanded by force in the hole expansion process; and a burring process of pushing a portion surrounding a re-punched hole that is a punched hole formed by the re-punching process and forming a vertical wall.

Growing community of inventors

Tokyo, Japan

Yutaka Mikazuki