Lower vehicle-body structure of automotive vehicle

Patent metadata

Field	Value
Publication number	US-2016159402-A1
Application number	US-201514951556-A
Country	US
Kind code	A1
Filing date	Nov 25, 2015
Priority date	Dec 5, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

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.

First claim

What is claimed is:

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.

2 . The lower vehicle-body structure of the automotive vehicle of claim 1 , wherein respective upper portions of said right-and-left intermediate pillars are connected to a roof reinforcement which extends in the vehicle width direction along a lower portion of a roof panel.

3 . The lower vehicle-body structure of the automotive vehicle of claim 2 , wherein a tunnel reinforcement is provided at an upper face of a front portion of said tunnel portion, and a rear portion of the tunnel reinforcement and the front seat-rail mounting seat are rigidly connected to each other.

4 . The lower vehicle-body structure of the automotive vehicle of claim 3 , wherein said cross member and said seat rail are provided to be spaced apart from each other.

5 . The lower vehicle-body structure of the automotive vehicle of claim 4 , wherein said seat-rail mounting seat is connected to a tunnel groove which is provided at the lower portion of the tunnel portion to extend in the vehicle longitudinal direction.

6 . The lower vehicle-body structure of the automotive vehicle of claim 1 , wherein a tunnel reinforcement is provided at an upper face of a front portion of said tunnel portion, and a rear portion of the tunnel reinforcement and the front seat-rail mounting seat are rigidly connected to each other.

7 . The lower vehicle-body structure of the automotive vehicle of claim 1 , wherein said cross member and said seat rail are provided to be spaced apart from each other.

8 . The lower vehicle-body structure of the automotive vehicle of claim 1 , wherein said seat-rail mounting seat is connected to a tunnel groove which is provided at the lower portion of the tunnel portion to extend in the vehicle longitudinal direction.

Assignees

• Mazda Motor

Inventors

• Nakaya Kouichi
• Takahashi Munenari
• Mori Masaki

Classifications

• B62D25/2036

  the subunits being side panels, sills or pillars (B62D21/157 takes precedence) · CPC title

• B60N2/005

  Arrangement or mounting of seats in vehicles {, e.g. dismountable auxiliary seats}(B60N2/02 takes precedence {; for railway vehicles B61D1/04}) · CPC title

• B62D21/157 Primary

  for side impacts · CPC title

• B62D25/20 Primary

  Floors or bottom sub-units {(sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006)} · CPC title

• B60N2/015

  Attaching seats directly to vehicle chassis · CPC title