Vehicle energy management system with load-bearing component in wheel cavity

Patent metadata

Field	Value
Publication number	US-9669784-B2
Application number	US-201514678480-A
Country	US
Kind code	B2
Filing date	Apr 3, 2015
Priority date	Apr 3, 2015
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

An energy management system for a vehicle includes a load-bearing component operatively positioned in a wheel cavity rearward of a tire and wheel assembly in the wheel cavity. The load-bearing component is configured to limit movement of the tire and wheel assembly in the wheel cavity under a load applied to the vehicle forward of the tire and wheel assembly and offset from a longitudinal centerline of the vehicle.

First claim

The invention claimed is:

1. An energy management system for a vehicle, wherein the vehicle has a wheelhouse structure defining a wheel cavity, and a tire and wheel assembly in the wheel cavity, the energy management system comprising:
a load-bearing component operatively positioned in the wheel cavity rearward of the tire and wheel assembly and configured to limit movement of the tire and wheel assembly within the wheel cavity under a predetermined load that is applied to the vehicle forward of the tire and wheel assembly and offset from a longitudinal centerline of the vehicle;
an airbag assembly mounted to the vehicle and including an airbag selectively deployable into the wheel cavity; wherein a first portion of the airbag is the load-bearing component;
wherein the vehicle has a longitudinally-extending rocker; and wherein the airbag assembly is mounted within the rocker.

2. The energy management system of claim 1 , the airbag assembly further comprising:
an actuator housing forming an inflation chamber;
wherein the airbag is operatively connected to the actuator housing;
an inflation mechanism in communication with the inflation chamber and selectively activatable to inflate the airbag;
wherein the airbag is configured to deploy into the wheel cavity when inflated so that the load-bearing component engages the tire and wheel assembly; and
a sensor operatively connected to the vehicle and to the airbag and configured to activate the inflation mechanism upon sensing a predetermined condition indicative of imminent or actual application of the load.

3. An energy management system for a vehicle, wherein the vehicle has a wheelhouse structure defining a wheel cavity, and a tire and wheel assembly in the wheel cavity, the energy management system comprising:
a load-bearing component operatively positioned in the wheel cavity rearward of the tire and wheel assembly and configured to limit movement of the tire and wheel assembly within the wheel cavity under a predetermined load that is applied to the vehicle forward of the tire and wheel assembly and offset from a longitudinal centerline of the vehicle;
an airbag assembly mounted to the vehicle and including an airbag selectively deployable into the wheel cavity; and wherein a first portion of the airbag is the load-bearing component;
wherein the vehicle has a longitudinally-extending rocker, wherein the airbag assembly is mounted to the rocker, and the airbag assembly further comprising:
an actuator housing forming an inflation chamber;
wherein the airbag is operatively connected to the actuator housing;
an inflation mechanism in communication with the inflation chamber and selectively activatable to inflate the airbag;
wherein the airbag is configured to deploy into the wheel cavity when inflated so that the load-bearing component engages the tire and wheel assembly;

a sensor operatively connected to the vehicle and to the airbag and configured to activate the inflation mechanism upon sensing a predetermined condition indicative of imminent or actual application of the load; and
wherein the airbag is mounted to the wheelhouse structure and the actuator housing is within the rocker.

4. The energy management system of claim 3 , wherein a second portion of the airbag is expandable and collapsible and is bonded to the first portion of the airbag, and wherein said second portion moves from a collapsed state to an expanded state when the airbag is inflated.

5. The energy management system of claim 3 , wherein the airbag is configured to wrap around the tire and wheel assembly rearward, inward, and forward of the tire and wheel assembly when the airbag is deployed.

6. An energy management system for a vehicle, wherein the vehicle has a wheelhouse structure defining a wheel cavity, and a tire and wheel assembly in the wheel cavity, the energy management system comprising:
a selectively actuatable assembly including a load-bearing component operatively positioned in the wheel cavity rearward of the tire and wheel assembly and configured to translate forward when the assembly is actuated to thereby limit movement of the tire and wheel assembly in the wheel cavity under a load that is applied to the vehicle forward of the tire and wheel assembly and offset from a longitudinal centerline of the vehicle;
wherein the selectively actuatable assembly is an airbag assembly mounted to the vehicle and including an airbag selectively deployable into the wheel cavity; wherein the load-bearing component is a first portion of the airbag; and
wherein the vehicle has a longitudinally-extending rocker, wherein the airbag assembly is mounted within the rocker.

7. The energy management system of claim 6 , the airbag assembly further comprising:
an actuator housing forming an inflation chamber;
wherein the airbag is operatively connected to the actuator housing;
an inflation mechanism in communication with the inflation chamber and selectively activatable to release solid propellant that inflates the airbag;
wherein the airbag is configured to deploy into the wheel cavity when inflated so that the load-bearing component engages the tire and wheel assembly; and
a sensor operatively connected to the vehicle and to the airbag and configured to activate the inflation mechanism upon sensing a predetermined condition indicative of imminent or actual application of the load.

8. The energy management system of claim 6 , wherein a second portion of the airbag is expandable and collapsible and is bonded to the first portion of the airbag; and wherein said second portion moves from a collapsed state to an expanded state when the airbag is inflated.

9. A vehicle comprising:
a wheelhouse structure defining a wheel cavity;
a tire and wheel assembly in the wheel cavity;
an energy management system including a load-bearing component operatively positioned in the wheel cavity rearward of the tire and wheel assembly and configured to limit movement of the tire and wheel assembly in the wheel cavity under a load that is applied to the vehicle forward of the tire and wheel assembly and offset from a longitudinal centerline of the vehicle;
an airbag assembly mounted to the vehicle and including an airbag selectively deployable into the wheel cavity; wherein a first portion of the airbag is the load-bearing component; and
wherein the vehicle has a longitudinally-extending rocker, wherein the airbag assembly is mounted within the rocker.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Jensen Charles E
• Saje Robert N
• Simonin Matthew P
• Rich Jonathan E
• Quigley Michael E
• Lawall Hans P

Classifications

• F15B15/19

  Pyrotechnical actuators · CPC title

• B60R2019/007

  Means for adjusting or regulating the crash absorption capacity of the vehicle, e.g. when detecting an impending collision · CPC title

• B60R13/0861

  for covering undersurfaces of vehicles, e.g. wheel houses · CPC title

• B60R19/00 Primary

  Wheel guards; Radiator guards, {e.g. grilles}; Obstruction removers; Fittings damping bouncing force in collisions ({reinforcement elements for side doors B60J5/0412; } mudguards B62D) · CPC title

• B62D21/152

  Front or rear frames · CPC title