发明授权
- 专利标题： Automobile floor structure
- 专利标题（中）： 汽车地板结构
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申请号： US10206815申请日： 2002-07-29
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公开(公告)号： US06793276B2公开(公告)日： 2004-09-21
- 发明人: Tsuyoshi Sugihara , Takanobu Kamura , Minoru Sunada , Yoshio Fujii , Shoji Nanba , Toshiharu Ikeda , Gunji Yoshii , Tsutomu Naganuma
- 申请人： Tsuyoshi Sugihara , Takanobu Kamura , Minoru Sunada , Yoshio Fujii , Shoji Nanba , Toshiharu Ikeda , Gunji Yoshii , Tsutomu Naganuma
- 优先权： JP2001-229093 20010730; JP2002-111651 20020415; JP2002-207353 20020716; JP2002-209262 20020718
- 主分类号： B62D2520
- IPC分类号： B62D2520
摘要：
A floor is partitioned into a plurality of areas S1 to S4 by a floor tunnel portion 11, side frames 13, side sills 12, and cross members 7, 8, 15, and 16, and the rigidity of the floor panels of the areas S1 to S3 is adjusted by rigidity adjustment portions 20, 21, 22, 23, and 25. These floor panels are set such that their natural frequency in a 2×1 mode, in which two antinodes are generated in the length direction of the automobile and one antinode is generated in the width direction of the automobile, is 240 to 260 Hz. Thus, a reduction in road noise due to automobile tire cavity resonance is achieved.
公开/授权文献
- US20030034673A1 Automobile floor structure 公开/授权日：2003-02-20
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