B - Operations – Transporting – 60 – J
Patent
B - Operations, Transporting
60
J
B60J 5/00 (2006.01) B60J 5/04 (2006.01) B60R 19/04 (2006.01) B60R 19/18 (2006.01) B60R 21/02 (2006.01) B62D 21/15 (2006.01)
Patent
CA 2437896
The present invention provides a structural member for a car capable of demonstrating excellent flexural strength and absorbed energy performance and, moreover, capable of realizing weight reduction and is a structural member for a car being formed with a high-tensile steel pipe having a material property of not less than 1,400 MPa in tensile strength and not less than 5% in elongation, and also having a closed section structure as the configuration of the cross section perpendicular to the direction of the longitudinal axis, the cross--sectional configuration satisfying the expression (1) below when defining a as the maximum length of said cross-sectional configuration in the longitudinal direction, when defining b as the maximum length thereof in the direction perpendicular to said direction, when defining L as the circumferential length thereof and when defining t as the wall thickness of the steel pipe, 0.65 <= b/a <= 0.75, 0.014 <= t/L <= 0.020 (1); and preferably, being disposed so that the longitudinal direction of the cross-sectional configuration of the structural member coincides with the direction of the collision of a car body when the structural member is attached to the car body.
La présente invention concerne un composant d'automobile permettant d'obtenir d'excellentes caractéristiques de résistance à la flexion et d'absorption d'énergie tout en réduisant le poids. Le composant décrit dans cette invention est formé d'un tuyau en acier haute tension présentant des caractéristiques matérielles telles qu'une résistance à la tension inférieure ou égale à 1400 Mpa et un allongement en traction inférieur ou égal à 5 % et présentant une structure en coupe fermée perpendiculairement à l'axe de longueur. La dimension maximale de la section en coupe longitudinale correspondant à a, la dimension maximale perpendiculaire correspondant à b, la longueur périphérique extérieure correspondant à L, et l'épaisseur de la paroi correspondant à t, la forme en coupe du composant réponds aux relations suivantes (1) 0,65 </= b / a </= 0,75 0,0014 </= t/L </= 0,020 . lorsque le composant est fixé au corps d'automobile, il est placé de telle sorte que le sens longitudinal de la forme en coupe est alignée avec le sens de collision.
Doi Hiroyuki
Kawase Masanobu
Motoyoshi Takashi
Takachi Tsutomu
Yamada Nobuyasu
Goudreau Gage Dubuc
Nippon Steel Corporation
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