Slidable vehicle seat assembly

A vehicle seat assembly comprising:

• a seat frame supporting a seat cushion and provided with side frame components laterally spaced to each other;
• a pair of lateral slide units longitudinally spaced to each other and coupled to the seat frame for lateral sliding movement of the seat cushion;
• and
• a pair of longitudinal slide units laterally spaced to each other and adapted to be fixedly secured to a floor panel of a vehicle body for longitudinal sliding movement of the seat cushion, the lateral slide units being coupled to the longitudinal slide units,
• wherein the lateral slide units include front and rear stationary rails, which are longitudinally spaced to each other and supported with the longitudinal slide units, and front and rear movable rails, which are longitudinally spaced to each other and held in engagement with the stationary rails for the lateral sliding movement of the seat cushion, respectively, and the front and rear movable rails of the lateral slide units are fixedly secured to concave portions of front and rear ends of the side frame components, respectively, to form the seat frame.