Bumper arrangement for the front region of a passenger car

Patent metadata

Field	Value
Publication number	US-10875480-B2
Application number	US-201916448631-A
Country	US
Kind code	B2
Filing date	Jun 21, 2019
Priority date	Dec 22, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A bumper arrangement of a passenger car has an upper and a lower load path. A spring element is provided on the transverse support of the lower load path, which, in the event of a collision of a pedestrian with the passenger car, exerts an additional force on the lower leg of the pedestrian, so as to support the movement of the pedestrian in the direction of the front hood of the passenger car.

First claim

What is claimed is:

1. A bumper arrangement for a front region of a passenger car, comprising:
an upper load path having upper longitudinal members and an upper crossmember;
a lower load path having lower longitudinal members and a lower crossmember;
at least one spring element supported on a lower longitudinal member, the spring element having a first end portion provided in a connection region of the lower longitudinal member to the lower crossmember;
an uncoupling device with which, in an event of a collision of the passenger car, a direct connection between the lower longitudinal member and the lower crossmember is undonable, wherein
after the direct connection between the lower longitudinal member and the lower cross member is undone, the spring element forms a support for the lower crossmember with a second end portion of the spring element.

2. The bumper arrangement according to claim 1 , wherein
the uncoupling device for undoing the direct connection between the lower longitudinal member and the lower crossmember comprises at least one component configured with a predetermined breaking point.

3. The bumper arrangement according to claim 2 , wherein
the uncoupling device is a shear bolt.

4. The bumper arrangement according to claim 1 , wherein
in the event of a collision, the spring element allows the lower crossmember to move counter to a direction of travel.

5. The bumper arrangement according to claim 4 , wherein
the spring element and/or the lower longitudinal member form a stop for the movement of the lower crossmember counter to the direction of travel.

6. The bumper arrangement according to claim 1 , wherein
the spring element is pretensioned during normal operation of the passenger car.

7. The bumper arrangement according to claim 1 , wherein
the spring element is arranged in an interior of the lower longitudinal member or in an interior of a deformation element provided on the lower longitudinal member.

8. The bumper arrangement according to claim 1 , wherein
the spring element is a coil spring.

9. A passenger car comprising a bumper arrangement according to claim 1 .

10. The passenger car according to claim 9 , wherein
the uncoupling device for undoing the direct connection between the lower longitudinal member and the lower crossmember comprises at least one component configured with a predetermined breaking point.

11. The passenger car according to claim 10 , wherein
the uncoupling device is a shear bolt.

12. The passenger car according to claim 9 , wherein
in the event of a collision, the spring element allows the lower crossmember to move counter to a direction of travel.

13. The passenger car according to claim 12 , wherein
the spring element and/or the lower longitudinal member form a stop for the movement of the lower crossmember counter to the direction of travel.

14. The passenger car according to claim 9 , wherein
the spring element is pretensioned during normal operation of the passenger car.

15. The passenger car according to claim 9 , wherein
the spring element is arranged in an interior of the lower longitudinal member or in an interior of a deformation element provided on the lower longitudinal member.

16. The passenger car according to claim 9 , wherein
the spring element is a coil spring.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Fichtinger Gerhard
• Gross Martin
• Novine Mazdak
• Rudolph Tim

Classifications

• B60R19/40

  in the direction of an obstacle before a collision {, or extending during driving of the vehicle, i.e. to increase the energy absorption capacity of the bumper (inflatable bumpers B60R19/20)} · CPC title

• B60R19/28 Primary

  Metallic springs · CPC title

• B60R2021/343

  using deformable body panel, bodywork or components · CPC title

• B60R19/12 Primary

  vertically spaced · CPC title

• B60R21/34

  Protecting non-occupants of a vehicle, e.g. pedestrians {(B60R19/02 takes precedence)} · CPC title