| 摘要 |
In a motorcycle including: a seat which can be opened upward and closed, a storage box disposed under the seat for holding helmets, the surround of the storage box being enclosed by a cover, the seat is comprised of a seat bottom plate, a seat cushion and a seat cloth. The seat bottom plate is integrally formed with a seat bottom plate extension which is extensionally formed along the outer periphery and projected downwards from the outer periphery, spreading outwardly toward its distal side. A sealing element is disposed between the storage box and the seat bottom plate extension and a cover is arranged so as to externally enclose the upper part of the storage box and the seat bottom plate extension. Further, in the sectional configuration cut across the vehicle's width, the storage box is shaped so that it spreads outwardly as it extends downwards from the opening edge of the upper opening, along the body cover which encloses the outer vehicle body below the seat while part of the opening edge of the upper opening on a first side with respect to the body width is shaped in a bay-like form so as to be sunken lower than the height of the opening edge on the opposite side.
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