Vehicle back door structure

摘要

A vehicle back door structure including: a back door panel made of resin having, in at least a part of a peripheral edge thereof, a recessed portion equipped with a pair of side walls and a bottom wall that interconnects vehicle front sides of the pair of side walls, with a step portion, that has one side-wall side positioned at a vehicle rear side of another side-wall side, being formed in the bottom wall; and a reinforcement rib that is formed integrally with a vehicle rear side surface of the bottom wall, that straddles the step portion, and that bridges the pair of side walls.

主权项

1. A vehicle back door structure comprising:
a back door panel made of resin having, in at least a part of a peripheral edge thereof, a recessed portion equipped with a pair of side walls and a bottom wall that interconnects vehicle front sides of the pair of side walls, with a step portion, that has one side-wall side positioned at a vehicle rear side of another side-wall side, being formed in the bottom wall; and a reinforcement rib that is formed integrally with a vehicle rear side surface of the bottom wall, that straddles the step portion, and that bridges the pair of side walls, wherein the reinforcement rib is configured to include a first rib portion that extends from one of the side walls toward the step portion, a second rib portion that extends from the other of the side walls toward the step portion, and a rib connecting portion that interconnects the first rib portion and the second rib portion in a vehicle front-rear direction.