Motor vehicle

Patent metadata

Field	Value
Publication number	US-10800366-B2
Application number	US-201816220070-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Jun 17, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A motor vehicle has a body, two spaced-apart longitudinal members, a bumper assembly as well as a second bumper cross-member which is spaced apart from the first bumper cross-member.

First claim

What is claimed is:

1. A motor vehicle having a body with an underbody, comprising:
two spaced-apart longitudinal members extending parallel to a vehicle longitudinal direction toward a rear of the motor vehicle;
a first bumper cross-member of a rear bumper assembly;
a second bumper cross-member of the rear bumper assembly;
two deformation elements of the rear bumper assembly, one deformation element in each case being connected at one end to a rear end of a respective longitudinal member and to one end of the second bumper cross-member, wherein
the first bumper cross-member is connected at each end to the other end of a respective deformation element,
the second bumper cross-member is arranged completely spaced-apart from the first bumper cross-member in the vehicle longitudinal direction by at least the length of the respective deformation elements, and
the second bumper cross-member is arranged with a vertical offset relative to the first bumper cross-member.

2. The motor vehicle as claimed in claim 1 , wherein
the first bumper cross-member is a closed profile with at least one cavity.

3. The motor vehicle as claimed in claim 1 , wherein
the first bumper cross-member is produced from a light metal or from steel.

4. The motor vehicle as claimed in claim 1 , wherein
the second bumper cross-member has a rectangular cross section.

5. The motor vehicle as claimed in claim 1 , wherein one of:
the second bumper cross-member is produced from a light metal.

6. The motor vehicle as claimed in claim 1 , wherein
in the bumper assembly the first bumper cross-member is a closed profile with at least one cavity and is produced from one of: steel or a light metal, and
the second bumper cross-member spaced-apart therefrom is produced from one of:
steel, a light metal, a textile material or a carbon fiber-reinforced plastics material.

7. The motor vehicle as claimed in claim 1 , wherein
in the bumper assembly, the first bumper cross-member is an open profile and is produced from one of: steel or a light metal, and
the second bumper cross-member spaced-apart therefrom is produced from one of:
steel, a light metal, a textile material or a carbon fiber-reinforced plastics material.

8. The motor vehicle as claimed in claim 1 , wherein
the first bumper cross-member is an open profile.

9. A motor vehicle having a body with an underbody, comprising:
two spaced-apart longitudinal members extending parallel to a vehicle longitudinal direction toward a rear of the motor vehicle;
a first bumper cross-member of a rear bumper assembly;
a second bumper cross-member of the rear bumper assembly;
two deformation elements of the rear bumper assembly, one deformation element in each case being connected at one end to a rear end of a respective longitudinal member and to one end of the second bumper cross-member, wherein
the first bumper cross-member is connected at each end to the other end of a respective deformation element,
the second bumper cross-member is arranged completely spaced-apart from the first bumper cross-member in the vehicle longitudinal direction by at least the length of the respective deformation elements, and
the second bumper cross-member is arranged in a vertical direction centrally relative to the first bumper cross-member.

10. The motor vehicle as claimed in claim 1 , wherein
the second bumper cross-member has a cross-sectional profile configured to increase a geometric moment of inertia.

11. The motor vehicle as claimed in claim 1 , wherein
the second bumper cross-member is made from steel.

12. The motor vehicle as claimed in claim 1 , wherein
the second bumper cross-member is a textile material or a carbon fiber-reinforced plastics material.

13. The motor vehicle as claimed in claim 9 , wherein
the first bumper cross-member is a closed profile with at least one cavity.

14. The motor vehicle as claimed in claim 9 , wherein
the first bumper cross-member is produced from a light metal or from steel.

15. The motor vehicle as claimed in claim 1 , wherein
the second bumper cross-member has a rectangular cross section.

16. The motor vehicle as claimed in claim 1 , wherein one of:
the second bumper cross-member is produced from a light metal.

17. The motor vehicle as claimed in claim 9 , wherein
in the bumper assembly the first bumper cross-member is a closed profile with at least one cavity and is produced from one of: steel or a light metal, and
the second bumper cross-member spaced-apart therefrom is produced from one of:
steel, a light metal, a textile material or a carbon fiber-reinforced plastics material.

18. The motor vehicle as claimed in claim 1 , wherein
in the bumper assembly, the first bumper cross-member is an open profile and is produced from one of: steel or a light metal, and
the second bumper cross-member spaced-apart therefrom is produced from one of:
steel, a light metal, a textile material or a carbon fiber-reinforced plastics material.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Adler Stefan
• Renz Tilo
• Riedenbauer Thomas
• Speth Bernhard

Classifications

• B60R19/04 Primary

  formed from more than one section {in a side-by-side arrangement} · CPC title

• B62D25/082

  Engine compartments · CPC title