公开(公告)号：US5564247A

公开(公告)日：1996-10-15

申请号：US314069

申请日：1994-09-28

申请人： Keiichi Nakamura ,  Masaru Kunikata ,  Takehisa Yoshikawa ,  Yoshiro Maita ,  Shunji Sasaki

发明人： Keiichi Nakamura ,  Masaru Kunikata ,  Takehisa Yoshikawa ,  Yoshiro Maita ,  Shunji Sasaki

IPC分类号： B21D49/00 ,  B21D51/12 ,  B21D51/52 ,  F24F13/20 ,  B21D13/00 ,  B21D13/10

CPC分类号： B21D51/12 ,  Y10T428/1241

摘要： In a high-rigidity structure made of sheet metal, in order to prevent increases of vibrations and noises owing to deterioration of the rigidity caused by decreasing the thickness of the sheet-metal, ribs having a height 10 times or more larger than the sheet-metal thickness are formed on bent portions of the sheet-metal structure, corrugated continuous grooves having two or more crest portions are formed on a surface of each of the bent portions on a smaller-radius side, and concave/convex sections corresponding to the continuous grooves are formed on side surfaces of each of the ribs which connect a larger-radius side and the smaller-radius side.

摘要翻译： 在由金属板制成的高刚性结构中，为了防止由于金属板厚度的减小而导致的刚性劣化导致的振动和噪声的增加，具有比片状金属板高10倍以上的肋， 金属厚度形成在金属板结构的弯曲部分上，在较小半径侧的每个弯曲部分的表面上形成具有两个或更多个波峰部分的波纹连续槽，对应于连续的凹部 在连接较大半径侧和较小半径侧的每个肋的侧表面上形成有凹槽。