| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin roof structure capable of satisfying NV performance and collision performance without raising mass and cost. <P>SOLUTION: The plate thickness of a roof panel 14 is set to be thinner than a conventional one. Consequently, rigidity of the roof panel 14 is lowered to reduce primary resonance frequency on a front header 16 side. Meanwhile, the roof panel 14 and the front header 16 form a square-like closed cross section part 36, and in the square-like closed cross section part 36, a void reinforcing part 40 which forms a closed cross section together with the roof panel 14 is provided integrally with the roof panel 14. By providing the void reinforcing part 40 in the square-like closed cross section part 36 that includes the front header 16, a local rigidity can be improved at a front end side of the roof panel 14. In short, without raising mass and cost, NV performance and collision performance are satisfied. <P>COPYRIGHT: (C)2013,JPO&INPIT |
