| 主权项 |
1. A vehicle body floor panel structure comprising a floor panel, and a plurality of frame members arranged on vehicle forward and rearward sides of and vehicle widthwise opposite sides of the floor panel to surround an outer peripheral edge of the floor panel and each joined to the floor panel through a respective one of a plurality of joint sections,
wherein the floor panel comprises: an article storage portion formed to protrude downwardly at a position spaced apart from each of at least two of the plurality of frame members on the vehicle widthwise opposite sides of the floor panel; and a pair of right and left lateral coupling portions each provided between a respective one of the two frame members on the vehicle widthwise opposite sides of the floor panel and the article storage portion, and wherein the article storage portion has a storage bottom forming a bottom region of the article storage portion, and a storage wall forming a peripheral wall region of the article storage portion, and wherein: the storage bottom has an upwardly or downwardly convex curved surface; the storage wall is configured such that each of right and left upper ends thereof is located below a corresponding one of the joint sections between the floor panel and respective ones of the two frame members on the vehicle widthwise opposite sides of the floor panel; each of the pair of lateral coupling portions is provided to couple each of the right and left upper ends of the storage wall and a corresponding one of the joint sections together; and each of the pair of lateral coupling portions has a region formed as a planar or curved surface which extends inwardly in a vehicle width direction while being inclined downwardly, and connects to a respective one of the right and left upper ends of the storage wall, the inclined planar or curved surface region being formed such that an angle defined between a line tangent to a surface of a vehicle widthwise cross-section thereof and a horizontal line passing through a corresponding one of the joint sections is in the range of 12 to 25 degrees, and an area of the inclined planar or curved surface region accounts for 70% or more of that of each of the pair of lateral coupling portions. |
