| 摘要 |
A hood structure in which outers and inners are closed through spaces. By a wave-shaped hood structure in which the sectional shapes of the inners are sine curves, sine n-th power curves or spline curves of waveforms near the external diameter of a head portion, there can be realized a head collision resistance which is independent of the collision position against the hood and homogeneous and excellent. This waveform hood structure is also excellent in the tension rigidity, the bending rigidity and the torsional rigidity. Therefore, this panel structure for the car body hood satisfies the demand for a high rigidity such as the head impact resistance for protecting a passenger and the tension rigidity.
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