Vehicle body lower structure

Patent metadata

Field	Value
Publication number	US-9238485-B2
Application number	US-201514616951-A
Country	US
Kind code	B2
Filing date	Feb 9, 2015
Priority date	Feb 14, 2014
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

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.

First claim

What is claimed is:

1. A vehicle body lower structure comprising:
a vehicle floor that is connected to a lower portion of a dashboard panel partitioning between a vehicle body front section and a vehicle cabin, and the vehicle floor extends toward the vehicle rear side;
a tunnel that is provided at a vehicle width direction center portion extending from a lower rear face side of the dashboard panel through the vehicle floor, and the tunnel extends in the vehicle front-rear direction;
a dashboard cross member that is joined to the lower rear face of the dashboard panel, and the dashboard cross member spans in the vehicle width direction between a front end of a side wall of the tunnel and a frame member of a vehicle body side section; and
an under floor brace that is provided at a front end portion of the tunnel, extending in the vehicle width direction at an opposite side to a vehicle cabin side, and that includes both vehicle width direction ends of the under floor brace extending further toward the vehicle width direction outside than the front end portion of the tunnel and are fixed to the dashboard panel, the vehicle width direction ends of the under floor brace being located in positions facing vehicle width direction inside ends of the dashboard cross member with the dashboard panel interposed therebetween.

2. The vehicle body lower structure of claim 1 , wherein:
the dashboard cross member includes a first ridge line running along the vehicle width direction; and
the under floor brace includes a second ridge line running along the vehicle width direction, the second ridge line having a vehicle width direction end at a position overlapping with the first ridge line as viewed in a direction in which the dashboard cross member and the under floor brace face each other.

3. The vehicle body lower structure of claim 1 , further comprising a pair of left and right under floor reinforcements provided at left and right vehicle width direction sides and at a vehicle lower side of the tunnel, the under floor reinforcements extending in the vehicle front-rear direction in a vehicle plan view and being joined to a lower portion of the dashboard panel and to the vehicle floor,
wherein both vehicle width direction ends of the under floor brace are joined to the under floor reinforcements.

4. The vehicle body lower structure of claim 2 , further comprising a pair of left and right under floor reinforcements provided at left and right vehicle width direction sides and at a vehicle lower side of the tunnel, the under floor reinforcements extending in the vehicle front-rear direction in a vehicle plan view and being joined to a lower portion of the dashboard panel and to the vehicle floor,
wherein both vehicle width direction ends of the under floor brace are joined to the under floor reinforcements.

5. The vehicle body lower structure of claim 4 , wherein the under floor reinforcements include a third ridge line running in the vehicle width direction at a front end portion of the under floor reinforcements, the third ridge line is located at a position overlapping the first ridge line and the second ridge line as viewed in the facing direction of the dashboard cross member and the under floor brace.

6. The vehicle body lower structure of claim 3 , further comprising a floor cross member that is extending in the vehicle width direction and is joined to an upper face of the vehicle floor at a vehicle front-rear direction intermediate portion of the upper face of the vehicle floor,
wherein a front end portion of the under floor reinforcements is joined to the dashboard cross member with the dashboard panel interposed therebetween, and a rear end portion of the under floor reinforcements is joined to the floor cross member with the vehicle floor interposed therebetween.

7. The vehicle body lower structure of claim 4 , further comprising a floor cross member that is extending in the vehicle width direction and is joined to an upper face of the vehicle floor at a vehicle front-rear direction intermediate portion of the upper face of the vehicle floor,
wherein a front end portion of the under floor reinforcements is joined to the dashboard cross member with the dashboard panel interposed therebetween, and a rear end portion of the under floor reinforcements is joined to the floor cross member with the vehicle floor interposed therebetween.

8. The vehicle body lower structure of claim 5 , further comprising a floor cross member that is extending in the vehicle width direction and is joined to an upper face of the vehicle floor at a vehicle front-rear direction intermediate portion of the upper face of the vehicle floor,
wherein a front end portion of the under floor reinforcements is joined to the dashboard cross member with the dashboard panel interposed therebetween, and a rear end portion of the under floor reinforcements is joined to the floor cross member with the vehicle floor interposed therebetween.

Assignees

• Toyota Motor Co Ltd

Inventors

• Atsumi Hyuga
• Nuruki Tetsuo
• Teramoto Daisuke

Classifications

• B62D25/2045 Primary

  the subunits being fire walls · CPC title

• B62D25/20

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