Assembly with an instrument panel for a motor vehicle and a knee airbag

• US 8,444,177 B2
• Filed: 02/25/2008
• Issued: 05/21/2013
• Est. Priority Date: 02/25/2008
• Status: Active Grant

• Current Assignee: Autoliv AB (Autoliv Incorporated)
• Original Assignee: Autoliv AB (Autoliv Incorporated)
• Inventors: Wallat, Nico, Wagner, Marcus
• Primary Examiner(s): Dickson, Paul N
• Assistant Examiner(s): BECK, KAREN JANE AMORES
• Application Number:
  US12/072,221
• Publication Number:
  US 20090212541A1
• Time in Patent Office: 1,912 Days
• Field of Search: 280/730.2, 280/728.3
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23169 specially adapted for knee protection
• CPC Class Codes: B60R 21/206 in the lower part of dashboards, e.g. for protecting the knees

Abstract

An airbag housing is carried on a formed part extending from a lower section of an instrument panel for a motor vehicle. The formed part forms at least a front section of an upper wall of a footwell assigned to the vehicle occupants. A knee airbag is disposed in the airbag housing.

Claims

1. An assembly for a motor vehicle comprising:

an instrument panel having a lower side that terminates at a forward edge;

a footwell cladding defining a first portion of a ceiling of a footwell of the motor vehicle and terminating at a rearward edge, an opening defined between the instrument panel forward edge and the footwell cladding rearward edge, wherein the opening, the forward edge and the rearward edge are all positioned within a single first plane;

a first formed part sized and shaped to be selectively insertable into the opening so as to extend in a direction toward a front of the motor vehicle from the forward edge of the instrument panel to the rearward edge, the first formed part oriented generally horizontally and defining at least a second portion of the ceiling, the second portion positioned within the single first plane;

a housing attached to and carried by the first formed part, the housing defining an exit opening for the airbag, the exit opening disposed in a horizontal plane; and

an airbag in the housing when stored and which on activation extends through the exit opening, into the footwell from a point forward of the forward edge of the instrument panel and is inflated from the point forward of the forward edge of the instrument panel to a position between the lower side of the instrument panel and a knee-shin area of a vehicle occupant to be protected.

2. The assembly according to claim 1, wherein the first formed part is selectively connected with the forward edge of the instrument panel.

3. The assembly according to claim 2, wherein the first formed part is latched together with the forward edge of the instrument panel by clip connections.

4. The assembly according to claim 1, wherein the first formed part is selected from a group including an injection moulded part and a deep-drawn part of plastic.

5. The assembly according to claim 1, wherein the housing is an integral part of the first formed part.

6. The assembly according to claim 1, wherein the housing is a separate element which is connected with the first formed part.

7. The assembly of claim 1, wherein the airbag is configured upon inflation to include an upper side in communication with the housing.

8. The assembly of claim 1, wherein the airbag is configured to include a forward end and a rearward end which both are introduced into the footwell at the point of the forward edge of the instrument panel and upon inflation the forward end disposed immediately below the housing.

9. The assembly of claim 8, wherein the airbag is configured upon inflation such that the rearward end is disposed higher than the forward end.

10. The assembly of claim 1, wherein the airbag is configured upon inflation to have a length between a forward end and a rearward end, the length being greater than a height generally perpendicular to the length.

11. The assembly of claim 7, wherein a forward end of the airbag is disposed immediately below the housing.

12. The assembly of claim 1, wherein removal of the first formed part from the opening and the instrument panel removes the housing and the airbag stored therein from the opening.

13. The assembly of claim 1, wherein the single first plane includes a single horizontal plane, and wherein the first formed part and the opening are each positioned fully in the single horizontal plane.

15. The assembly of claim 11, wherein the airbag is configured upon inflation to include an upper side in communication with the housing.

24. The assembly of claim 1, further comprising a second formed part sized and shaped to be selectively positioned into the opening and coupled to the instrument panel so as to extend in the direction toward the front of the vehicle from the forward edge of the instrument panel, the second formed part including an absence of the housing and the stored airbag and selectively defining the second portion of the ceiling.

26. The assembly of claim 1, whereby the instrument panel is manufactured independently of the first formed part such that the motor vehicle can selectively include the first formed part and associated airbag depending on a desired feature content of the motor vehicle.

29. The assembly of claim 13, wherein the exit opening is positioned in the horizontal plane.

14. An assembly for a motor vehicle comprising:

an instrument panel for generally facing a vehicle occupant, the instrument panel having a lower side that terminates at a forward edge;

a footwell cladding defining a first portion of a ceiling of a footwell of the motor vehicle, the first portion terminating at a rearward edge that is spaced apart from the forward edge so as to define a gap between the instrument panel and the footwell cladding;

a first formed part sized and shaped to be selectively insertable into the gap so as to forwardly extend from the forward edge of the instrument panel toward the rearward edge of the cladding, the first formed part oriented generally horizontally and defining a second portion of the ceiling of the footwell of the motor vehicle, the first formed part, the forward edge and the rearward edge positioned within a single first plane, the first formed part defining an integrally formed housing extending from an upper side thereof and defining an exit opening disposed in a horizontal plane; and

an airbag normally stored in the housing and which upon activation extends through the exit opening, into the footwell and is inflated between the lower side of the instrument panel and a knee-shin area of the vehicle occupant.

16. The assembly of claim 14, wherein the airbag is configured upon inflation to include a forward end and a rearward end, the forward end disposed immediately below the housing.

17. The assembly of claim 16, wherein the airbag is configured upon inflation such that the rearward end is disposed higher than the forward end.

18. The assembly of claim 14, wherein the airbag is configured upon inflation to have a length between a forward end and a rearward end, the length being greater than a height generally perpendicular to the length.

19. The assembly of claim 16, wherein a forward end of the airbag is disposed immediately below the housing.

25. The assembly of claim 14, further comprising a second formed part sized and shaped to be selectively positioned into the gap and coupled to the instrument panel so as to extend in the direction toward the front of the vehicle from the forward edge of the instrument panel, the second formed part including an absence of the housing and the airbag normally stored therein and selectively defining the second portion of the ceiling.

27. The assembly of claim 14, whereby the instrument panel is manufactured independently of the first formed part such that the motor vehicle can selectively include the first formed part and associated airbag depending on a desired feature content of the motor vehicle.

30. The assembly of claim 14, wherein removal of the first formed part from the gap removes the housing and the airbag normally stored therein from the gap.

31. The assembly of claim 14, wherein the single first plane includes a single horizontal plane, and wherein the first formed part and the gap are each positioned fully in the single horizontal plane.

20. An assembly for a motor vehicle comprising:

an instrument panel having a lower side that terminates at a forward edge;

a first formed part having a first size and a first shape configured to be selectively disposed relative to the instrument panel so as to extend in a direction toward a front of the motor vehicle from the forward edge of the instrument panel, the first formed part defining at least a portion of a ceiling of a footwell of the motor vehicle, the first formed part positioned substantially in a single horizontal plane;

a housing fixed to the first formed part, the housing defining an exit opening, the exit opening positioned in the single first plane;

an airbag normally stored in the housing, extendable through the exit opening into the footwell from a point forward of the forward edge of the instrument panel, and inflatable from the point forward of the forward edge of the instrument panel to a position between the lower side of the instrument panel and a knee-shin area of a vehicle occupant to be protected, a forward end of the airbag disposed immediately below the housing; and

a capture strap coupled to the airbag about an exterior thereof such that the capture strap runs outside the airbag and facilitates positioning the airbag in the knee-shin area.

21. The assembly of claim 20, further comprising a footwell cladding defining a first portion of a ceiling of a footwell of the motor vehicle and terminating at a rearward edge spaced apart from the forward edge, wherein an opening is defined between the instrument panel forward edge and the footwell cladding rearward edge, and wherein the first formed part is selectively positioned in the opening.

22. The assembly of claim 21, further comprising a second formed part having the first size and the first shape and configured to be selectively positioned in the opening and selectively coupled to the instrument panel so as to extend in the direction toward the front of the motor vehicle from the forward edge of the instrument panel, the second formed part selectively defining at least the portion of the ceiling of the footwell and including an absence of the housing and the airbag normally stored therein.

23. The assembly of claim 20, wherein the capture strap is coupled to the forward end of the airbag.

32. The assembly of claim 20, wherein removal of the first formed part from the instrument panel removes the housing and airbag normally stored therein from an area behind the instrument panel.

28. An assembly for a motor vehicle comprising:

an instrument panel having a lower side that terminates at a forward edge;

a footwell cladding defining a first portion of a ceiling of a footwell of the motor vehicle and terminating at a rearward edge spaced apart from the forward edge, an opening defined between the instrument panel forward edge and the footwell cladding rearward edge;

a first formed part sized and shaped to be selectively insertable into the opening so as to extend in a direction toward a front of the motor vehicle from the forward edge of the instrument panel to the rearward edge, the first formed part defining at least a second portion of the ceiling, the forward edge, the rearward edge and the first formed part positioned fully within a single first plane;

a housing attached to and carried by the first formed part, the housing defining an exit opening for the airbag, the exit opening disposed within the single first plane;

an airbag in the housing when stored and which on activation extends through the exit opening, into the footwell from a point forward of the forward edge of the instrument panel and is inflated from the point forward of the forward edge of the instrument panel to a position between the lower side of the instrument panel and a knee-shin area of a vehicle occupant to be protected; and

a second formed part sized and shaped to be selectively positioned into the opening and coupled to the instrument panel so as to extend in the direction toward the front of the vehicle from the forward edge of the instrument panel, the second formed part including an absence of the housing and the stored airbag and selectively defining the second portion of the ceiling, the second formed part positioned within the single first plane;

whereby the instrument panel is manufactured independently of the first formed part such that the motor vehicle can selectively include the first formed part and associated airbag depending on a desired feature content of the motor vehicle.

33. The assembly of claim 28, wherein the single first plane includes a single horizontal plane, and wherein the first formed part and the opening are each positioned fully in the single horizontal plane.