| 摘要 |
A vehicle body bottom structure comprising:
a floor panel (18) constituting a floor surface of a vehicle body (1); and
a side sill (70) which is joined to a side portion in the vehicle width direction of the floor panel (18) and has a closed cross-section (34) extending in a front-rear direction,
wherein the side sill (70) includes a side sill outer (71) which is disposed on an outer side in a vehicle (CI), and a side sill inner (72) which is disposed on an inner side in the vehicle (C 1) and joined to the side sill outer (71),
wherein the side sill inner (72) is configured to be vertically divided into two, to include an upper member (73) disposed on an upper side, and a lower member (74) disposed on a lower side,
wherein the upper member (73) is formed at substantially the same height as the height of the side sill outer (71), and has a plurality of ridge portions (73g) formed in the front-rear direction, and
wherein the lower member (74) is formed with a plate thickness or material different from that of the upper member (73), and is disposed substantially horizontally between the floor panel (18) and the side sill outer (71). |
