Abstract: A vehicle lower portion structure has: a tunnel portion disposed at a vehicle transverse direction central portion of a floor portion; a front side member whose rear portion is disposed at a vehicle lower side of the floor portion and a vehicle transverse direction outer side of the tunnel portion; a first member including a first horizontal wall that extends from the rear portion toward a vehicle transverse direction inner side, and a first vertical wall bent toward a vehicle upper side from the first horizontal wall; and a second member spanning an opening portion of the tunnel portion. The second member includes a second horizontal wall, and a second vertical wall that is bent toward the vehicle upper side from the second horizontal wall, is disposed parallel to the first vertical wall, and is joined to the first vertical wall.

Abstract: A vehicle lower portion structure has: a tunnel portion disposed at a vehicle transverse direction central portion of a floor portion; a front side member whose rear portion is disposed at a vehicle lower side of the floor portion and a vehicle transverse direction outer side of the tunnel portion; a first member including a first horizontal wall that extends from the rear portion toward a vehicle transverse direction inner side, and a first vertical wall bent toward a vehicle upper side from the first horizontal wall; and a second member spanning an opening portion of the tunnel portion. The second member includes a second horizontal wall joined to the first horizontal wall, and a second vertical wall that is bent toward the vehicle upper side from the second horizontal wall, is disposed parallel to the first vertical wall, and is joined to the first vertical wall.

Abstract: A vehicle lower portion structure has: a tunnel portion disposed at a vehicle transverse direction central portion of a floor portion; a front side member whose rear portion is disposed at a vehicle lower side of the floor portion and a vehicle transverse direction outer side of the tunnel portion; a first member including a first horizontal wall that extends from the rear portion toward a vehicle transverse direction inner side, and a first vertical wall bent toward a vehicle upper side from the first horizontal wall; and a second member spanning an opening portion of the tunnel portion. The second member includes a second horizontal wall joined to the first horizontal wall, and a second vertical wall that is bent toward the vehicle upper side from the second horizontal wall, is disposed parallel to the first vertical wall, and is joined to the first vertical wall.

Abstract: A vehicle body structure is provided that is capable of increasing the degrees of freedom of applicable vehicle type, and that is capable of suppressing a cabin from deforming in a frontal collision by improving load transmission performance. A dash cross member is installed running along a vehicle width direction at a lower section of a dash panel. Rocker linking sections provided at both length direction end portions of the dash cross member are each joined to a rocker inner panel and a front pillar inner panel. A saddle shaped tunnel reinforcing section is formed at a length direction intermediate portion of the dash cross member, and is joined to a tunnel connection section of the dash panel.

Abstract: A vehicle body lower structure includes: a floor connected to a dashboard panel, extending toward the vehicle rear side; a tunnel provided at a vehicle width direction center portion extending from the dashboard panel through the floor in the vehicle front-rear direction; a dashboard cross member joined to the dashboard panel, spanning in the vehicle width direction between a front end of the tunnel and a vehicle side section; and an under floor brace provided to a front end portion of the tunnel, extending in the vehicle width direction at the opposite side to the cabin, including both ends extending further toward the vehicle width direction outside than the front end portion of the tunnel and are fixed to the dashboard panel, the ends being located in positions facing vehicle width direction inside ends of the dashboard cross member via the dashboard panel.

Abstract: There is provided a vehicle lower section structure including a rocker that extends in a vehicle front-rear direction at a vehicle width direction outer side, a tunnel section that extends in the vehicle front-rear direction at a central portion in the vehicle width direction, a pair of dash cross members that extend in the vehicle width direction at a lower side of a dash panel, that are separated by the tunnel section, tunnel reinforcement that is disposed at a lower side in the vehicle up-down direction that extends in the vehicle front-rear direction, wherein a first front flange is formed at a front end of the dash cross member in the vehicle front-rear direction, and wherein a second front flange is disposed at a position opposing the first front flange across the dash panel or a floor section.

Abstract: A vehicle body lower structure includes: a floor connected to a dashboard panel, extending toward the vehicle rear side; a tunnel provided at a vehicle width direction center portion extending from the dashboard panel through the floor in the vehicle front-rear direction; a dashboard cross member joined to the dashboard panel, spaning in the vehicle width direction between a front end of the tunnel and a vehicle side section; and an under floor brace provided to a front end portion of the tunnel, extending in the vehicle width direction at the opposite side to the cabin, including both ends extending further toward the vehicle width direction outside than the front end portion of the tunnel and are fixed to the dashboard panel, the ends being located in positions facing vehicle width direction inside ends of the dashboard cross member via the dashboard panel.