Access system for a moveable vehicle

摘要

An access system (116) for a moveable vehicle (100) having a longitudinal axis (113) includes an access device (118) attached to the vehicle (100) and movable between a stowed position and an access position. A bottom end (132) of the access device (118) is disposed at a first horizontal distance from the longitudinal axis (113) in the stowed position and is disposed a second greater horizontal distance from the longitudinal axis (113) in the access position. The access device (118) is configured to provide access to the moveable vehicle (100) when in the access position. The access system also includes a biasing device (148, 208) associated with the access device (118) and configured to apply a continuous biasing force to bias the access device toward the access position. An actuator device (146, 204) is associated with the access device (118) and configured to apply a selective actuating force to the access device (118). The actuating force is controllable to be greater than the biasing force to move the access device (118) to the stowed position and controllable to be less than the biasing force to allow the biasing force to move the access device (118) to the access position.