Underseat storage bin for motor vehicles

A seat assembly, the seat assembly comprising:

• a pair of opposed side walls extending upwardly from a floor of a vehicle;
• a guide track disposed on an upper surface of the each of the side walls;
• a seat frame movable along the guide tracks, the seat frame having a front end and a rear end;
• a seat back connected to the seat frame proximate the rear end of the seat frame;
• a cushion pivotally connected to the seat frame proximate the front end of the seat frame, the cushion being pivotal between a closed position and an open position;
• a bin disposed generally below the cushion and accessible when the cushion is pivoted to the open position, the bin engaged with the seat frame and movable therewith when the seat frame is moved along the guide tracks;
• a fastener connecting the bin to the seat frame;
• and
• a door disposed proximate the rear end of the seat frame and movable to an open position such that the bin is accessible from below the cushion through the door.