To provide a torsion beam capable of reducing residual stress that occurs in the torsion beam during crushing molding by eliminating the necessity of after-treatment and after-molding on the torsion beam after crushing molding while securing moldability of the torsion beam.SOLUTION: A torsion beam 1 includes first outer compound shape parts 14, 16 which are constructed by connection of a crushed cross section to a first outer intermediate part 12 positioned in an innermost part on a negative direction side of a third axis orthogonal to an axis of extension and a second axis on a positive direction side of the second axis orthogonal to the axis of extension and continuity of a plurality of curved shapes only or continuity of curved shapes and flat shapes.SELECTED DRAWING: Figure 2

    【課題】トーションビームの成形性を確保しながら、潰し成形後のトーションビームに対する後処理や後成形の必要性を排して、潰し成形時のトーションビームに発生する残留応力を低減することができるトーションビームを提供する。【解決手段】トーションビーム1においては、潰れ断面が、延在軸に直交する第2軸の正方向の側において、延在軸及び第2軸に直交する第3軸の負方向の側の最奥部に配される第1外中間部12に接続すると共に、湾曲形状のみが複数連なることにより、又は湾曲形状と平坦形状とが連なることにより構成された第1外複合形状部14、16を有する。【選択図】図2


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    Title :

    TORSION BEAM


    Additional title:

    トーションビーム


    Contributors:

    Publication date :

    2021-09-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs



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