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1. 发明授权

US06752451B2 Strengthening member for automobile 失效
标题翻译：加强汽车会员
公开(公告)号：US06752451B2
公开(公告)日：2004-06-22
申请号：US10311518
申请日：2002-12-13
申请人： Shinya Sakamoto , Daigo Sumimoto , Yoshio Terada , Yukihisa Kuriyama , Hiroshi Sakurai , Eizaburou Nakanishi
发明人： Shinya Sakamoto , Daigo Sumimoto , Yoshio Terada , Yukihisa Kuriyama , Hiroshi Sakurai , Eizaburou Nakanishi
IPC分类号： B21D4702
CPC分类号： B62D21/152 , B21C1/22 , B21D26/033 , B21D26/047 , B21D47/02 , B62D21/00 , B62D25/00 , B62D25/20 , B62D29/007 , F16F7/12 , Y10T29/49622
摘要： An object of the present invention is to provide a lightweight strengthening member for an automobile, excellent in crush resistance in the axial direction and having high flexural strength. Further, another object thereof is to provide a strengthening member which does not generating cracks even when a high-strength steel sheet is used. The present invention provides: a strengthening member 1 for an automobile, being a lengthy strengthening member 1 having concave portions 3 at the four corners of a basic rectangular cross section 2 and forming a cruciform closed section as a whole, characterized in that the wall thickness of the concave portions 3 is 5 to 30% thicker than the wall thickness of the portions excluding the concave portions, namely, the side walls 4 and the top walls 5; further, a strengthening member 1 for an automobile, characterized in that the hardness of the concave portions 3 is 5% or more higher than the hardness of the portions excluding the concave portions, namely, the side walls 4 and the top walls 5; and furthermore, a strengthening member 1 for an automobile formed by drawing or hydroforming.
摘要翻译：本发明的一个目的是提供一种用于汽车的轻质加强件，在轴向方向上具有优异的抗压碎性并且具有高弯曲强度。此外，其另一个目的是提供即使在使用高强度钢板时也不会产生裂缝的加强构件。本发明提供一种用于汽车的强化构件1，它是一个长的加强构件1，其具有在基本矩形横截面2的四个角处的凹入部分3，并且整体形成十字形封闭区域，其特征在于，壁厚的凹部3比除了凹部以外的部分即侧壁4和顶壁5的壁厚厚5〜30％另外，一种用于汽车的加强件1，其特征在于，凹部3的硬度比不包括凹部的部分即侧壁4和顶壁5的硬度高5％以上。并且还包括用于通过拉伸或液压成形形成的汽车用加强件1。

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