Vehicle comprising a box structure (1) in an inner panel (2) of which there is provided an opening (3) for the passage of components, such as a window raiser mechanism (4), mounted on a support plate (5) shaped for being applied in a sealed manner against the periphery of the opening. The support plate of the components has a dishing region (9) situated at the level of the articulation joints R1, R2 of the hips of passengers so as to constitute a pelvis thrust member in the event of a lateral impact on the door. The dishing region (9) is press formed and comprises a group of bosses (11) orientated in the direction toward the window glass (10) and interconnected on the side adjacent to the passengers by planar areas (12) of the support plate.