Abstract: In a floor structure of a vehicle body center section, a floor side member is provided at lower portions of a main floor panel, a vertical wall is formed at a front side of a rear floor panel, a rear seat is installed on the rear floor panel, a rear seat leg extends downward along the vertical wall, a lower end portion of the rear seat leg is mounted to a portion of the rear floor panel, a rear seat leg reinforcement member that extends in a vehicle longitudinal direction is disposed on each of upper portions at both left and right sides of the floor panels, a rear end portion of the reinforcement member is connected to the lower end portion of the rear seat leg, and a front end portion of the reinforcement member is connected to the main floor panel and the floor side member.

Abstract: In a floor structure of a vehicle body center section, a floor side member is provided at lower portions of a main floor panel, a vertical wall is formed at a front side of a rear floor panel, a rear seat is installed on the rear floor panel, a rear seat leg extends downward along the vertical wall, a lower end portion of the rear seat leg is mounted to a portion of the rear floor panel, a rear seat leg reinforcement member that extends in a vehicle longitudinal direction is disposed on each of upper portions at both left and right sides of the floor panels, a rear end portion of the reinforcement member is connected to the lower end portion of the rear seat leg, and a front end portion of the reinforcement member is connected to the main floor panel and the floor side member.

Abstract: The present invention provides a pillar structure for a vehicle body rear portion which can suppress deformation of a pillar when a load is applied outward to a slide door in a state in which said slide door is closed. The slide door opens and closes an opening provided in a vehicle side surface. A pillar portion is composed of a closed section of an inner and outer panel. A fixing mechanism fixes a rear portion of said slide door at a closed position. Said fixing mechanism is provided on a surface facing a vehicle body front side of said pillar portion. A pillar reinforcement body forming a quadrangular closed section is mounted to an inner surface of said pillar portion. An interior-side reinforcement member is disposed between said pillar reinforcement body and said inner panel so as to have a gap in a vehicle width direction.