| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle lower body structure that controls deformation of a vehicle width direction and a torsion direction of a tunnel cross member by using a bearing support, and can improve rigidity of a vehicle body.SOLUTION: A vehicle lower body structure includes: a tunnel part 2; a pair of right and left floor cross members 3 that extend outside the vehicle width direction from right and left side parts of this tunnel part 2, respectively; and a tunnel cross member 10 that forms a saddle type closed cross section by cooperation with the tunnel part 2; and a propeller shaft 4. In the vehicle lower body structure, a tunnel cross member 10 includes: a tunnel cross member body 11 that is coupled with a vehicle width direction inner end of a pair of right and left floor cross members 3; and an extension 12 that extends in a vehicle body longitudinal direction from this tunnel cross member body 11, and a pair of right and left bearing support supporting part 5 that is formed at the same height position with an upper wall 3a of a pair of right and left floor cross members 3, while supporting a propeller shaft 4 through a bearing support 20 at the extension. |
