TRANSFER DEVICE

摘要

A transfer device to assist a user in moving between vertically displaced locations has a storage enclosure mounted or mountable to the exterior of a motor vehicle. The storage enclosure protects components from external conditions, weather, etc., and typically is made of steel, plastic, etc. A user platform is supported on a drawer assembly that can be completely encased in the storage enclosure. Movement of the drawer assembly is controlled by a drawer extension mechanism that selectively extends and retracts the drawer assembly into and out of the storage enclosure between a stored position completely inside the storage enclosure and an operative position outside the storage enclosure. When the drawer assembly is in an operative position outside the storage enclosure, a platform elevating mechanism can raise and lower the user platform between a lower, compacted storage position and an elevated position using a scissors linkage that links the user platform to a drawer assembly support such as a tray. The elevating mechanism can be an actuator having a cylinder pivotably mounted to the tray and a slidable rod pivotably mounted to the scissors linkage in a manner that permits raising the seat as the rod is extended outwardly from the actuator cylinder. A control system monitors the position of the drawer assembly and the vertical position of the user platform and can prevent undesired operation such as when a motor vehicle engine is still running or a motor vehicle door is closed.