| 摘要 |
A motor vehicle (5, Figure 1) having a side door 10 is disclosed having lower and upper parts 13 and 14. The upper part 14 comprises a window surround (20, Figure 1) for fixed 21 and drop-down 22 windows. The fixed window 21 has a larger barrel radius of curvature than the drop-down window 22 and the inclusion of the fixed window 21 reduces the chord length of the drop-down window 22 between a beltline 9 of the motor vehicle (5) and an lower edge of the fixed window 21. This combination allows the use of more tumblehome on the motor vehicle (5) without needing to increase the thickness of the lower part 13 of the side door 10 in order to accommodate the drop-down window 22 when it is lowered. Preferably the locus of the radius of curvature of the fixed window 21, R and the locus of the radius of curvature of the drop-down window 22, R2 are proportioned such that extended arcs do not intersect below a lower edge of the fixed window 21. |
