Vehicle body structure

Patent metadata

Field	Value
Publication number	US-11465690-B2
Application number	US-201916703203-A
Country	US
Kind code	B2
Filing date	Dec 4, 2019
Priority date	Dec 7, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A vehicle body structure that includes a rear floor side member that extends along a vehicle front-rear direction at a vehicle width direction end portion of a vehicle rear section and that is divided into front and rear portions in the vehicle front-rear direction. The rear floor side member includes a joint section that is provided between a vehicle width direction inner side of a rocker rear, which is provided along the vehicle front-rear direction at a vehicle front-rear direction rear side of a rocker extending along the vehicle front-rear direction at a vehicle side section, and a vehicle front-rear direction front end of an attachment portion of a rear suspension member in vehicle side view, and that joins together a rear floor side member front portion and a rear floor side member rear portion.

First claim

What is claimed is:

1. A vehicle body structure that includes a rear floor side member that extends along a vehicle front-rear direction at a vehicle width direction end portion of a vehicle rear section and that is divided into front and rear portions in the vehicle front-rear direction, the rear floor side member comprising:
a rear floor side member front portion that is made of a ferrous metal and that configures a front portion of the rear floor side member;
a rear floor side member rear portion that is die-cast and that configures a rear portion of the rear floor side member, the rear floor side member front portion abuts and is joined together with an outer side of the rear floor side member rear portion; and
a joint section that is provided between a vehicle width direction inner side of a rocker rear, which is provided along the vehicle front-rear direction at the vehicle front-rear direction rear side of a rocker extending along the vehicle front-rear direction at a vehicle side section, and a vehicle front-rear direction front end of an attachment portion of a rear suspension member in vehicle side view, and that joins together the rear floor side member front portion and the rear floor side member rear portion.

2. The vehicle body structure of claim 1 , wherein:
a cross-section profile of a rocker rear inner configuring a vehicle width direction inner side of the rocker rear, when sectioned along a vehicle vertical direction and the vehicle width direction, is an open cross-section profile that opens toward a vehicle width direction outer side;
the rocker rear inner includes:
a first upright wall that is provided at a vehicle vertical direction center portion of the rocker rear inner and that extends along the vehicle vertical direction and the vehicle front-rear direction,
a first upper wall that is provided at a vehicle vertical direction upper side of the first upright wall, and that is linked to the first upright wall by extending along the vehicle front-rear direction and the vehicle width direction, and
a first lower wall that is provided at a vehicle vertical direction lower side of the first upright wall so as to oppose the first upper wall, and that is linked to the first upright wall by extending along the vehicle front-rear direction and the vehicle width direction; and

the rear floor side member rear portion includes:
a second upright wall that is provided at a vehicle vertical direction center portion of the rear floor side member rear portion so as to oppose the first upright wall and that extends along the vehicle vertical direction and the vehicle front-rear direction,
a second upper wall that is provided at a vehicle vertical direction upper side of the second upright wall, that is linked to the second upright wall by extending along the vehicle front-rear direction and the vehicle width direction, that is disposed in a state in which a gap is provided between the second upper wall and the first upright wall, and that is provided at a position that overlaps with the first upright wall in vehicle side view, and
a second lower wall that is provided at a vehicle vertical direction lower side of the second upright wall so as to oppose the second upper wall, that is linked to the second upright wall by extending along the vehicle front-rear direction and the vehicle width direction, that is disposed in a state in which a gap is provided between the second lower wall and the first upright wall, and that is provided at a position that overlaps with the first upright wall in vehicle side view.

3. The vehicle body structure of claim 2 , wherein the rear floor side member front portion further includes:
a third upright wall that is provided at a vehicle vertical direction center portion of the rear floor side member front portion, that extends along the vehicle vertical direction and the vehicle front-rear direction, and that abuts and is joined to the second upright wall;
a third upper wall that is provided at a vehicle vertical direction upper side of the third upright wall, that is linked to the third upright wall by extending along the vehicle front-rear direction and the vehicle width direction, and that abuts and is joined to the first upper wall; and
a third lower wall that is provided at a vehicle vertical direction lower side of the third upright wall so as to be able to oppose the third upper wall, that is linked to the third upright wall by extending along the vehicle front-rear direction and the vehicle width direction, and that abuts and is joined to the first lower wall.

4. The vehicle body structure of claim 2 , wherein the rear floor side member front portion further includes:
a third upright wall that is provided at a vehicle vertical direction center portion of the rear floor side member front portion, that extends along the vehicle vertical direction and the vehicle front-rear direction and that is joined to the second upright wall, such that a closed cross-section area is formed between the third upright wall and the second upright wall;
a third upper wall that is provided at a vehicle vertical direction upper side of the third upright wall, that is linked to the third upright wall by extending along the vehicle front-rear direction and the vehicle width direction, and that abuts and is joined to the first upper wall; and
a third lower wall that is provided at a vehicle vertical direction lower side of the third upright wall so as to be able to oppose the third upper wall, that is linked to the third upright wall by extending along the vehicle front-rear direction and the vehicle width direction, and that abuts and is joined to the first lower wall.

5. The vehicle body structure of claim 3 , further comprising:
a bead portion that is formed at the rear floor side member front portion along the vehicle front-rear direction, and that projects so as to have a recessed shape or a protruding shape in the vehicle width direction; and
a spot join between the rear floor side member front portion and the rear floor side member rear portion that is provided at an extension line of the bead portion.

Assignees

• Toyota Motor Co Ltd

Inventors

• Murata Soshiro
• SAGISAKA Takashi
• Kagami Ayaka

Classifications

• B62D25/2027 Primary

  the subunits being rear structures · CPC title

• B62D25/08 Primary

  Front or rear portions {(sub-frames for mounting engine or suspensions B62D21/11)} · CPC title

• B62D21/152

  Front or rear frames · CPC title

• B62D21/157

  for side impacts · CPC title

• B62D27/02

  rigid · CPC title