US Patent 8689919 Structure for vehicle body lower portion

A structure for a vehicle body lower portion according to the present invention includes: a side sill (3) located on each side in a vehicle width direction and extending in a vehicle front-rear direction; a side member (13) joined to a lower face (1b) of a floor panel (1) and extending in the vehicle front-rear direction at a position above the side sill (3) and inside the side sill (3) in the vehicle width direction; a brace member (39) connecting a lower part of the side member (13) to an upper side of the side sill (3); and an outer cross member (37) connecting the lower part of the side member (13) to a lower side of the side sill (3).