Vehicle-body lower structure

A vehicle-body lower structure, comprising:

• a side sill extending in a vehicle-body front-rear direction;
• and
• a cross member disposed inward of the side sill in a vehicle width direction and extending in the vehicle width direction, wherein
• the side sill includes a side sill outer and a side sill inner disposed inward of the side sill outer in the vehicle width direction,
• a bulk having a shape corresponding to the cross member is provided on the opposite side of the side sill inner from the cross member in a closed-section space formed by the side sill outer and the side sill inner,
• the bulk includes a front wall portion, a rear wall portion placed behind the front wall portion in the vehicle-body front-rear direction, and a connecting wall portion connecting the front wall portion and the rear wall portion, the front wall portion and the connecting wall portion forming a first edge line extending in the vehicle width direction, and the rear wall portion and the connecting wall portion forming a second edge line extending in the vehicle width direction, and
• upon a collision to a side face of the vehicle-body lower structure, the first line edge and the second line edge are configured to transmit a load from an outside in the vehicle width direction to the cross member.

A vehicle-body lower structure, comprising:

• a side sill extending in a vehicle-body front-rear direction;
• and
• a cross member disposed inward of the side sill in a vehicle width direction and extending in the vehicle width direction, wherein
• the side sill includes a side sill outer and a side sill inner disposed inward of the side sill outer in the vehicle width direction,
• a bulk having a shape corresponding to the cross member is provided on the opposite side of the side sill inner from the cross member in a closed-section space formed by the side sill outer and the side sill inner,
• the bulk includes a front wall portion, a rear wall portion placed behind the front wall portion in the vehicle-body front-rear direction, and a connecting wall portion connecting the front wall portion and the rear wall portion, the front wall portion and the connecting wall portion forming a first edge line extending in the vehicle width direction, and the rear wall portion and the connecting wall portion forming a second edge line extending in the vehicle width direction, and
• the front wall portion and the rear wall portion of the bulk are joined to the side sill outer.