Automobile strength member, particularly side impact beam

An automobile strength member, having a cross-sectional shape giving a high bending repulsion at the beginning of impact and able to reduce the production cost and lighten the weight and achieve a greater improvement in safety and a reduction of cost of an automobile, that is, an automobile strength...

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Bibliographische Detailangaben
Hauptverfasser:	KOYUBA, MOTOFUMI, NAKANISHI, EIZABURO, ONO, MASAMOTO, TERADA, YOSHIO, NIIYAMA, FUMIHIKO, SAKAMOTO, SHINYA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS MOTOR VEHICLES PERFORMING OPERATIONS REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES TRAILERS TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES
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Beschreibung
Zusammenfassung:	An automobile strength member, having a cross-sectional shape giving a high bending repulsion at the beginning of impact and able to reduce the production cost and lighten the weight and achieve a greater improvement in safety and a reduction of cost of an automobile, that is, an automobile strength member comprised of a rectangular steel tube with a square cross-section, simultaneously satisfying the following relations (1) to (3), and having a strength of at least 690 MPa in terms of tensile strength: R 1 1.5t t R ¥1.1t R 1 ¢ ¥R 2 where, t: thickness of side (mm) t R : thickness of corner (mm) R 1 : outside corner R (mm) R 2 : inside corner R (mm) where both a maximum value and minimum value of hardness at a cross-section of the rectangular steel tube are in the range of within ±30% of the average value of the entire cross-section.