Nippon Steel Corporation

Soma Sonobe

Yasuhiro Ito

Atsushi Ono

Takeshi Kawachi

Yutaka Mikazuki

Naoki Kimoto

An automobile suspension structure includes: a subframe; a first link; and a second link, in which the subframe includes: a pair of side members; a pair of cross members; and a link attachment part, the link attachment part is arranged to be continuous with an end of the cross member, the link attachment part includes: a first link attachment part; and a second link attachment part, the link attachment part is joined to an upper surface and a lower surface of the side member in an automobile height direction and an outer surface of the side member in an automobile width direction, the first link attachment part and the second link attachment part are arranged with the side member sandwiched therebetween in the automobile height direction, the first link is attached to the first link attachment part, and the second link is attached to the second link attachment part.

Automobile suspension structure

Provided is a blank made of a steel and comprising at least two protruding regions () having an outer edge () protruding outward in in-plane directions, in which a softened part () is formed at least partially in the protruding regions () and the softened part () is formed in at least a part of the outer edge of the protruding regions (), a Vickers hardness of the softened part () is lower than a Vickers hardness of a main portion region (), and the blank comprises at least two of the protruding regions () having the softened part ().

Blank and component

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

An automobile suspension part includes an arm member and a reinforcement, wherein: the arm member includes a top wall part, a first ridge line part, a second ridge line part, a first side wall part, and a second side wall part; the top wall part includes a first attachment part at a first end part; the top wall part includes a second attachment part at a second end part; the reinforcement includes a bottom wall part, a third ridge line part, and a flange part; the third ridge line part is sandwiched between the bottom wall part and the flange part; the bottom wall part is joined to the first side wall part and the second side wall part; the third ridge line part is connected to the first side wall part and the second side wall part; the flange part is joined to the top wall part between the first attachment part and the second attachment part; and the flange part is connected to the first side wall part and the second side wall part.

Automobile suspension part

An automotive frame member includes a hat member and a closing plate, in which the hat member includes a top plate, two vertical walls, and two flanges, the two vertical walls are positioned between the top plate and the flanges, respectively, the two vertical walls face each other, the two flanges are respectively joined to the closing plate, each of the two vertical walls includes plural groove parts extending in a direction vertical to a longitudinal direction of the hat member, the groove part includes a bottom surface and two side surfaces, the two side surfaces face each other, the two side surfaces are positioned on both sides of the bottom surface, and a width a of the groove part and a depth b of the groove part in a cross section parallel to the top plate, and a height c of the vertical wall in a direction vertical to the top plate satisfy relations of 0.2&#x2264;a/c&#x2264;0.3 and 0.2&#x2264;b/c&#x2264;0.3.

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Tokyo, Japan

Soma Sonobe