To suppress occurrence of buckling in a web or in an outside flange upon collision, and further occurrence of fracture in a weld metal zone on the outside flange, in a door beam comprising an aluminum alloy extrusion shape having a closed cross section structure having a weld metal zone along a longer direction.SOLUTION: In a cross section vertical to an extrusion direction of an aluminum alloy extrusion shape, webs 4, 5 comprise outside parts 4a, 5a connected to an outside flange 2, and inside parts 4b, 5b connected to an inside flange 3, and each thickness of the outside parts 4a, 5a is thicker than each thickness of the inside parts 4b, 5b. The outside parts 4a, 5a are positioned on an area on the furthermore outside in a vehicle body width direction than a cross section center O of the aluminum alloy extrusion shape.SELECTED DRAWING: Figure 1
【課題】長手方向に沿って溶着部を有する閉断面構造のアルミニウム合金押出形材からなるドアビームにおいて、衝突時にウエブ及び外側フランジに座屈が生じ、さらに外側フランジの溶着部に破断が生じるのを抑制する。【解決手段】アルミニウム合金押出形材の押出方向に垂直な断面において、ウエブ4,5が外側フランジ2に接続する外側部4a,5aと内側フランジ3に接続する内側部4b、5bからなり、外側部4a,5aの肉厚が内側部4b、5bの肉厚より大きい。外側部4a,5aはアルミニウム合金押出形材の断面積中心Oより車体幅方向外側の領域に位置する。【選択図】図1
ALUMINUM ALLOY DOOR BEAM
アルミニウム合金製ドアビーム
2020-11-26
Patent
Electronic Resource
Japanese
IPC: | B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge |