Seat mounting devices

A seat mounting device for a vehicle seat may include at least two locking mechanisms (20) provided on one of a vehicle seat (40) and a vehicle body, and an engagement member (43) provided on the other of the vehicle seat and the vehicle body. The locking mechanisms (20) are interconnected via an interconnecting member (26, 28). The engagement member (43) is arranged and constructed to be locked by the locking mechanisms (20). The locking mechanisms (20) and the engagement member (43) are arranged and constructed such that the engagement member (43) can be engaged with or removed from the locking mechanisms (20) by moving the vehicle seat (40) in one direction.