Patent ID: 8870269

Claim:
A system for accessing a passenger compartment by a doorway made in a chassis frame of the passenger compartment, the access system comprising: at least one door hinged to the chassis frame by a first horizontal articulated joint and configured to form an inclined ramp in an open position of the door; at least one actuator configured to move the door, linked to the door and the chassis frame; at least one drive element; a step plate at least partially covering an outside of the door and hinged with respect to the chassis frame by a second articulated joint parallel to the first articulated joint, and the second articulated joint including a hinge pin offset to the first articulated joint, the step plate being linked to the door by the at least one drive element connected to the door by a third articulated joint and to the step plate by a fourth articulated joint; and wherein: the pins of the first, second, third and fourth articulated joints are parallel to one another and arranged so as to form the four summits of a parallelogram deformable between an open position and a closed position of the door, the passenger compartment is equipped with first external armor plates fixed to the chassis frame by first shock-absorbing elements, the door includes a door panel linked to the first articulated joint, the door panel is equipped with second external armor plates fixed to the door panel by second shock-absorbing elements, and the step plate includes a second panel linked to the second articulated joint, the second panel is equipped with third external armor plates fixed to the second panel by third shock-absorbing elements.