Storage assist device for vehicle seat

A storage assist device for vehicle seat that has a seat cushion supported rotatably with respect to a vehicle body floor and a seat back supported foldably with respect to the seat cushion and selectively changes in position between a use position and a storage position in a state where the seat back is folded down, comprising:

• a supporting member mounted on the vehicle body floor side for supporting a rotating shaft fixed to the seat cushion;
• a link member having a fixed portion fixed to the rotating shaft and an engagement portion provided at a position spaced from the fixed portion;
• a fixing member provided on the vehicle body floor side and disposed at a position spaced at a predetermined distance from the supporting member;
• and
• an urging element mounted between the engagement portion of the link member and the fixing member that applies an urging force in an urging direction,
• wherein the urging element is set such that the urging force is minimized when a center of gravity of the vehicle seat is between the use position and the storage position.