LOWER VEHICLE-BODY STRUCTURE OF AUTOMOTIVE VEHICLE

摘要

A single cross member extending in a vehicle width direction is provided between a portion of a side sill which is positioned near a center pillar and a tunnel portion. A pair of seat-rail mounting seats are provided at a lower portion of the tunnel portion to be spaced apart from the cross member in a vehicle longitudinal direction. A seat rail is rigidly connected to the pair of seat-rail mounting seats at its bottom face. Thereby, the lightweight, high rigidity, and quietness of the vehicle can be attained.

主权项

1. A lower vehicle-body structure of an automotive vehicle, comprising:
a tunnel portion provided at a central portion, in a vehicle width direction, of a floor panel and extending in a vehicle longitudinal direction; right-and-left side sills provided at right-and-left both-side portions of the floor panel and extending in the vehicle longitudinal direction; right-and-left intermediate pillars extending in a vehicle vertical direction from the right-and-left side sills; a pair of single cross members, each of which extends in a vehicle width direction between a portion of the side sill which is positioned near the intermediate pillar and the tunnel portion; a pair of seat-rail mounting seats provided at a lower portion of the tunnel portion to be spaced apart from the cross member in the vehicle longitudinal direction; and a seat rail rigidly connected to the pair of seat-rail mounting seats at a bottom face thereof.