Vehicle body rear part structure

Patent metadata

Field	Value
Publication number	US-10471995-B2
Application number	US-201816000941-A
Country	US
Kind code	B2
Filing date	Jun 6, 2018
Priority date	Jul 6, 2017
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

An upper side joint section that extends inward in a vehicle width direction from a vicinity of a rear side frame and a lateral side joint section that extends downward from the upper side joint section and that is separated in the vehicle width direction from the rear side frame are provided on a rear floor panel of a vehicle body rear part structure. The rear panel has: a frame joint part to which the rear side frame is joined; a first floor joint part to which the upper side joint section of the rear floor panel is joined; and a second floor joint part to which the lateral side joint section of the rear floor panel is joined. A longitudinal bead is provided on a part of the rear panel between the frame joint part and the second floor joint part. The longitudinal bead extends to a lower end of the rear panel and is opened downward.

First claim

What is claimed is:

1. A vehicle body rear part structure, comprising:
a pair of right and left rear side frames that are arranged substantially along a vehicle body front-to-rear direction;
a rear floor panel that is provided on the pair of rear side frames;
a rear panel that is arranged to stand at a rearward position of the pair of rear side frames and that is joined to rear ends of the pair of rear side frames and a rear end of the rear floor panel;
a rear bumper beam that extends substantially along a vehicle width direction on a rearward side of the rear panel; and
a pair of extensions that connect together the rear panel and the rear bumper beam on an extension in a rearward direction of each of the rear side frames,
wherein a joint part, which is joined to the rear panel, of a rear end of the rear floor panel has:
an upper side joint section that extends inward in the vehicle width direction from a vicinity of each of the rear side frames; and
a lateral side joint section that extends downward from an inner end portion in the vehicle width direction of the upper side joint section and that is arranged to be separated in the vehicle width direction from each of the rear side frames,

the rear panel has:
a frame joint part to which rear ends of the rear side frames are joined;
a first floor joint part to which the upper side joint section is joined; and
a second floor joint part to which the lateral side joint section is joined,

a longitudinal bead in which an expansion shape that expands in a vehicle body frontward direction or a vehicle body rearward direction extends substantially along a vertical direction is provided on a part of the rear panel between the frame joint part and the second floor joint part, and
the longitudinal bead extends to a lower end of the rear panel and is opened downward.

2. The vehicle body rear part structure according to claim 1 ,
wherein a reinforcement plate that connects together the frame joint part and the second floor joint part is arranged at a higher position of the rear panel than an upper end of the longitudinal bead.

3. The vehicle body rear part structure according to claim 2 ,
wherein the reinforcement plate is joined to at least any one of the frame joint part and the second floor joint part above an upper end of the longitudinal bead.

4. The vehicle body rear part structure according to claim 2 ,
wherein the reinforcement plate is arranged close to an upper end of the longitudinal bead.

5. The vehicle body rear part structure according to claim 3 ,
wherein the reinforcement plate is arranged close to an upper end of the longitudinal bead.

6. The vehicle body rear part structure according to claim 2 ,
wherein the longitudinal bead is arranged below a horizontal line that passes through a center of the pair of rear side frames, and the reinforcement plate is arranged above the horizontal line that passes through the center of the pair of rear side frames.

7. The vehicle body rear part structure according to claim 3 ,
wherein the longitudinal bead is arranged below a horizontal line that passes through a center of the pair of rear side frames, and the reinforcement plate is arranged above the horizontal line that passes through the center of the pair of rear side frames.

8. The vehicle body rear part structure according to claim 4 ,
wherein the longitudinal bead is arranged below a horizontal line that passes through a center of the pair of rear side frames, and the reinforcement plate is arranged above the horizontal line that passes through the center of the pair of rear side frames.

9. The vehicle body rear part structure according to claim 5 ,
wherein the longitudinal bead is arranged below a horizontal line that passes through a center of the pair of rear side frames, and the reinforcement plate is arranged above the horizontal line that passes through the center of the pair of rear side frames.

10. The vehicle body rear part structure according to claim 6 ,
wherein the rear bumper beam comprises a beam main body that is joined to the pair of extensions and a supplementary beam that is provided on a part in the vehicle width direction of the beam main body, and
the supplementary beam is arranged above a horizontal line that passes through a center of the pair of rear side frames.

11. The vehicle body rear part structure according to claim 7 ,
wherein the rear bumper beam comprises a beam main body that is joined to the pair of extensions and a supplementary beam that is provided on a part in the vehicle width direction of the beam main body, and
the supplementary beam is arranged above a horizontal line that passes through a center of the pair of rear side frames.

12. The vehicle body rear part structure according to claim 8 ,
wherein the rear bumper beam comprises a beam main body that is joined to the pair of extensions and a supplementary beam that is provided on a part in the vehicle width direction of the beam main body, and
the supplementary beam is arranged above a horizontal line that passes through a center of the pair of rear side frames.

13. The vehicle body rear part structure according to claim 9 ,
wherein the rear bumper beam comprises a beam main body that is joined to the pair of extensions and a supplementary beam that is provided on a part in the vehicle width direction of the beam main body, and
the supplementary beam is arranged above a horizontal line that passes through a center of the pair of rear side frames.

Assignees

• Honda Motor Co Ltd

Inventors

• Sugawara Kenta
• Kishida Kengo
• Kikuchi Hirofumi
• Kanezashi Kazutaka
• Okuyama Keiichiro

Classifications

• B62D21/152

  Front or rear frames · CPC title

• B60R19/36

  Combinations of yieldable mounting means of different types {(fluid shock absorbers with coaxial coil springs B60R19/32)} · CPC title

• B60R19/24

  Arrangements for mounting bumpers on vehicles · CPC title

• B62D25/08 Primary

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

• B60R19/18

  {characterised by the cross-section;} Means within the bumper to absorb impact · CPC title