| 摘要 |
A wheelchair lift is mounted in a vehicle at one side of the doorway, for example at the front frame of a sliding side door of a van. A platform is positionable horizontally for carrying a wheelchair to be moved into or out of the vehicle. A vertical drive mechanism is attached to the platform at a corner adjacent the vehicle doorway, and has a hydraulic cylinder and chain drive raising and lowering the wheelchair relative to the doorway. A base member is attached to the vehicle inside the doorway, for example on the floor. A carriage is carried on the base member for linear movement toward and away from the doorway. The vertical drive mechanism is coupled to the carriage on a vertical hinge or pivot axis that is movable by a linear actuator from a position at which the hinge axis is inside the vehicle to a position outside of the vehicle clear of the doorway. The platform can be raised, lowered and rotated on the vertical pivot axis. Since linear movement rather than rotation clears the doorway, a wheelchair occupant can move on or off the platform from a number of angles of approach between parallel to the longitudinal axis of the vehicle and perpendicular thereto.
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