Side sill structure

A side sill structure comprising:

• a side sill extending in a vehicle front-rear direction on an outer side in a vehicle width direction of a floor panel, and defining a closed cross-section by a combination of a sill inner member disposed on a vehicle inner side and a sill outer member disposed on a vehicle outer side, the side sill including a plurality of partitioning members located in the closed cross-section, and a stiffener connecting the partitioning members to one another in a longitudinal direction of the side sill, wherein
• the stiffener is arranged along a corner portion formed by an inner side wall and an upper wall on the vehicle inner side of the sill inner member,
• a plurality of seat brackets configured to support a seat and a floor cross member disposed at a position interposed in the vehicle front-rear direction between the seat brackets are joined to the floor panel,
• the stiffener is joined to the floor cross member with the inner side wall of the sill inner member being interposed therebetween,
• a pillar extending upward in a vehicle is connected to the side sill, and
• the partitioning members of the side sill and the floor cross member are arranged at positions overlapping the pillar when viewed from side of the vehicle.

A side sill structure comprising:

• a side sill extending in a vehicle front-rear direction on an outer side in a vehicle width direction of a floor panel, and defining a closed cross-section by a combination of a sill inner member disposed on a vehicle inner side and a sill outer member disposed on a vehicle outer side, the side sill including a plurality of partitioning members located in the closed cross-section, and a stiffener connecting the partitioning members to one another in a longitudinal direction of the side sill, wherein
• the stiffener is arranged along a corner portion formed by an inner side wall and an upper wall on the vehicle inner side of the sill inner member,
• the upper wall of the sill inner member includes a stepped portion in which a step provided in the vehicle width direction extends in a longitudinal direction of the sill inner member at the upper wall, and
• the stepped portion is formed between an outer end of the upper portion of the stiffener and a lower end of a flange of the sill inner member provided upright in the vehicle.