Chassis of a motor vehicle including a means for absorbing a frontal impact

Patent metadata

Field	Value
Publication number	US-9296426-B2
Application number	US-201314390485-A
Country	US
Kind code	B2
Filing date	Apr 4, 2013
Priority date	Apr 5, 2012
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A chassis of a motor vehicle including a mechanism for absorbing a frontal impact including two side rails mounted on a front portion of the chassis and arranged on either side of the chassis, a front crossmember mounted under a floor of a passenger compartment of the vehicle in contact with a transmission tunnel arranged on a central axis and extending from the front crossmember towards a rear portion of the chassis. Each side rail includes one end mounted to engage with the front crossmember.

First claim

The invention claimed is:

1. A motor vehicle chassis comprising:
means for absorbing a frontal impact comprising two brackets and two longitudinal members, the two longitudinal members being mounted on a front portion of the chassis and arranged on each side of the chassis; and
a front crossmember mounted below a floor of a passenger compartment of the vehicle in contact with a transmission tunnel arranged on a central axis and extending from the front crossmember toward a rear portion of the chassis;
wherein each longitudinal member comprises an end mounted to butt against the front crossmember, and
wherein the two brackets are each mounted between one of the longitudinal members and the front crossmember.

2. The chassis as claimed in claim 1 , wherein each of the two brackets is dimensioned to have an end facing the transmission tunnel and having a shape with a flank inclined at an angle between the longitudinal member to which it is coupled and the front crossmember.

3. The chassis as claimed in claim 1 , further comprising two skirts mounted on each side of the chassis, wherein the means for absorbing the frontal impact further comprises two lateral crossmembers each mounted between one of the longitudinal members and one of the skirts, at a height of the front crossmember.

4. The chassis as claimed in claim 3 , wherein each lateral crossmember has a shape inclined toward the rear on a side of the skirt to form an obtuse angle between the longitudinal member and the lateral crossmember.

5. The chassis as claimed in claim 2 , wherein the brackets are fastened to the longitudinal members with spot welds.

6. The chassis as claimed in claim 5 , wherein the brackets are fastened to the front crossmember with spot welds.

7. The chassis as claimed in claim 1 , wherein the brackets are fastened to the longitudinal members and the front crossmember with spot welds.

8. The chassis as claimed in claim 1 , wherein the front crossmember has a U-shaped cross section oriented to receive the end of the longitudinal members in a hollow of the U-shaped cross section.

9. A motor vehicle chassis, comprising:
two longitudinal members mounted on a front portion of the chassis and arranged on each side of the chassis;
a front crossmember mounted below a floor of a passenger compartment of the vehicle in contact with a transmission tunnel arranged on a central axis and extending from the front crossmember toward a rear portion of the chassis; and
two brackets, each of the two brackets being mounted between one of the longitudinal members and the front crossmember
wherein each longitudinal member comprises an end mounted to butt against the front crossmember.

10. The chassis as claimed in claim 9 , wherein each of the two brackets is dimensioned to have an end facing the transmission tunnel and having a shape with a flank inclined at an angle between the longitudinal member to which it is coupled and the front crossmember.

11. The chassis as claimed in claim 9 , further comprising:
two skirts mounted on each side of the chassis; and
two lateral crossmembers each mounted between one of the longitudinal members and one of the skirts at a height of the front crossmember.

12. The chassis as claimed in claim 11 , wherein each lateral crossmember has a shape inclined toward the rear on a side of the skirt to form an obtuse angle between the longitudinal member and the lateral crossmember.

13. The chassis as claimed in claim 10 , wherein the brackets are fastened to the longitudinal members with spot welds.

14. The chassis as claimed in claim 13 , wherein the brackets are fastened to the front crossmember with spot welds.

15. The chassis as claimed in claim 9 , wherein the brackets are fastened to the longitudinal members and the front crossmember with spot welds.

16. The chassis as claimed in claim 9 , wherein the front crossmember has a U-shaped cross section oriented to receive the end of the longitudinal members in a hollow of the U-shaped cross section.

Assignees

• Renault Sas

Inventors

• Delord Christian
• Gaumont Herve
• Hlubina Thierry
• Caillard Jerome

Classifications

• B62D27/02

  rigid · CPC title

• B62D21/18

  characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 · CPC title

• B62D21/09

  Means for mounting load bearing surfaces · CPC title

• B62D25/2018 Primary

  the subunits being front structures · CPC title

• B62D21/152 Primary

  Front or rear frames · CPC title