STRUCTURE FOR VEHICLE SIDE DOOR

摘要

A vehicle side door structure (10) is equipped with a door inner panel (30) disposed along a vehicle front and rear direction and a door outer panel (40) disposed on a vehicle width direction outer side of the door inner panel (30). An impact beam (50) is disposed between the door inner panel (30) and the door outer panel (40). The impact beam (50) is disposed in such a way that its lengthwise direction coincides with the vehicle front and rear direction. An impact beam extension (52) is disposed on a front end portion (50F) of the impact beam (50). The impact beam extension (52) is overlaid on a first opposing wall portion (34C) formed on a vehicle front and rear direction front end portion side of the door inner panel (30), is welded to the first opposing wall portion (34C). Furthermore, the impact beam extension (52) overlaps at least part of a through hole (36) serving as an example of a weak portion formed in a second opposing wall portion (32A) of the door inner panel (30) as seen from the outer side in the vehicle width direction.