Energy absorbing structure for vehicle frame

Patent metadata

Field	Value
Publication number	US-11407449-B2
Application number	US-202016799005-A
Country	US
Kind code	B2
Filing date	Feb 24, 2020
Priority date	Feb 24, 2020
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

A vehicle frame includes a first structural member and an energy absorbing structure connected to the first structural member. The first structural member extends in a vehicle longitudinal direction. An energy absorbing structure is connected to the first structural member. The energy absorbing structure includes a first fixed member, an impact member and a connecting member. The first fixed member is connected to the first structural member. The impact member is connected to the first structural member. A connecting member is movably connected to the first fixed member and has a first end fixed to the impact member such that movement of the impact member moves the connecting member about the first fixed member.

First claim

What is claimed is:

1. A vehicle frame comprising:
a first structural member extending in a vehicle longitudinal direction; and
an energy absorbing structure connected to the first structural member, the energy absorbing structure including
a first fixed member connected to the first structural member;
an impact member welded to the first structural member, the impact member extending from an outboard side of the first structural member; and
a connecting member movably connected to the first fixed member and having a first end fixed to the impact member such that movement of the impact member moves the connecting member about the first fixed member.

2. The vehicle frame accordingly to claim 1 , wherein
a second end of the connecting member is free.

3. The vehicle frame accordingly to claim 1 , wherein
the first fixed member is disposed within the first structural member.

4. The vehicle frame accordingly to claim 3 , wherein
a window is disposed in the first structural member, and
the first end of the connecting member extends from the window.

5. The vehicle frame accordingly to claim 1 , wherein
the impact member and the first structural member are made of the same material.

6. The vehicle frame accordingly to claim 1 , wherein
the connecting member is made of a spring steel.

7. The vehicle frame accordingly to claim 1 , wherein
the impact member has a first portion, a second portion and a third portion, the first and third portions being substantially parallel to each other, and the second portion extending angularly between the first and third portions.

8. A vehicle frame comprising:
a first structural member extending in a vehicle longitudinal direction; and
an energy absorbing structure connected to the first structural member, the energy absorbing structure including
a first fixed member connected to the first structural member;
an impact member connected to the first structural member; and
a connecting member movably connected to the first fixed member and having a first end fixed to the impact member such that movement of the impact member moves the connecting member about the first fixed member,
the first fixed member being a spool having a circular cross section when viewed parallel to a longitudinal axis thereof.

9. The vehicle frame accordingly to claim 8 , wherein
a contact angle between the connecting member and the first fixed member is less than 180 degrees.

10. The vehicle frame accordingly to claim 9 , wherein
the free end of the connecting member is disposed rearward of the first fixed member.

11. The vehicle frame accordingly to claim 1 , wherein
a contact angle between the connecting member and the first fixed member is at least 360 degrees, and
the free end of the connecting member is disposed forward of the first fixed member.

12. The vehicle frame accordingly to claim 8 , wherein
a contact angle between the connecting member and the first fixed member is at least 720 degrees.

13. The vehicle frame accordingly to claim 1 , wherein
a second fixed member is connected to the first structural member, and
the connecting member is movably connected to the first and second fixed members.

14. The vehicle frame accordingly to claim 13 , wherein
a first contact angle between the connecting member and the first fixed member is at least 360 degrees, and
a second contact angle between the connecting member and the second fixed member is at least 360 degrees.

15. The vehicle frame accordingly to claim 13 , wherein
a second structural member connected to the first structural member and extending in a vehicle lateral direction, and
the impact member is disposed rearwardly of the second structural member.

16. A vehicle frame comprising:
a structural member extending in a vehicle longitudinal direction, the structural member having a window; and
an energy absorbing structure connected to the structural member, the energy absorbing structure including
a fixed member disposed in the structural member;
an impact member connected to the structural member and extending from an outboard side of the structural member; and
a connecting member movably connected to the fixed member and having a first end passing through the window and fixed to the impact member such that movement of the impact member moves the connecting member about the fixed member.

17. The vehicle frame accordingly to claim 16 , wherein
a second end of the connecting member is free and disposed within the structural member.

18. The vehicle frame accordingly to claim 16 , wherein
a contact angle between the connecting member and the first fixed member is less than 180 degrees.

Assignees

• Nissan North America Inc

Inventors

• Grattan Patrick

Classifications

• B62D21/03

  transverse members providing body support · CPC title

• B62D27/04

  resilient · CPC title

• B62D21/155 Primary

  Sub-frames or underguards · CPC title

• B62D21/15 Primary

  having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body (bumpers B60R19/02; shock absorbers in general F16F) · CPC title

• B62D21/08

  built up with interlaced cross members · CPC title