Patent ID: 7591501

Claim:
A hatchback door structure for a vehicle, said hatchback door structure comprising: an inner panel which is arranged on an inner side of the vehicle; and an outer panel which is arranged on an outer side of the vehicle; wherein the inner panel comprises a one-piece press-formed frame which has a shape outlining an outer shape of a hatchback door, the frame comprising: a window frame portion on which a window glass is mounted, the window frame portion being formed in an upper portion of the frame; a locking device fixing portion for supportively receiving a locking device therein, the locking device fixing portion being formed in a bottom portion of the frame; and a V-shaped stiffening frame portion which is integrally formed as part of the frame and extends downwardly from both a bottom left corner and a bottom right corner of the window frame portion to the locking device fixing portion, wherein the V-shaped stiffening frame portion protrudes toward the outer panel from an inner side contour of the frame with respect to the vehicle, the V-shaped stiffening frame portion configured with an outwardly bowed arcuate shape as seen from a side view.