Patent ID: 8052205

Claim:
A floor structure for a vehicle body, comprising: a floor panel including a floor body and a tunnel part, the floor body defining a floor body plane and the tunnel part being provided laterally centrally of the vehicle body and extending longitudinally along the vehicle body, the tunnel part including a top wall and side walls, the side walls extending from the top wall toward the floor body plane; side sills mounted on respective left and right sides of the floor panel and extending longitudinally along the vehicle body; cross members extending over the floor panel laterally along the vehicle body and linking the tunnel part and the respective side sill, each of the cross members including a plurality of weight reduction holes for reducing weight, the plurality of weight reduction holes being provided in regions bordered by ridge lines so as to form hole clusters, a front wall that is free of the weight reduction holes, a front inclined wall extending upward at a rearward incline from a top edge of the front wall, the front inclined wall including a seat-mounting hole for mounting a seat, wherein the weight reduction holes forming the hole clusters are provided in regions other than a periphery of the seat-mounting hole, a top wall extending rearward from a rear edge of the front inclined wall, and a rear inclined wall extending downward at a rearward incline from a rear edge of the top wall; and a tunnel-interior cross member provided inside the tunnel part and extending between the side walls, wherein the side walls each including a horizontal ridge formed in respective vertical centers of the side walls for receipt of the tunnel-interior cross member and the respective cross members such that the tunnel-interior cross member is vertically spaced from the floor body plane.