Shock-absorbing front-wall for motor vehicles

• US 3,951,427 A
• Filed: 04/04/1974
• Issued: 04/20/1976
• Est. Priority Date: 12/15/1970
• Status: Expired due to Term

• Current Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Inventors: Wilfert, Karl
• Primary Examiner(s): Wood, Jr., M. H.
• Assistant Examiner(s): Silverstrim, John P.
• Application Number:
  US05/458,041
• Time in Patent Office: 747 Days
• Field of Search: 280/150 AB, 280/150 B, 180/90
• US Class Current: 280/732
• CPC Class Codes: B60R 2021/21525 the lid being fixed on the bag, or forming part of the bag wall, or the bag itself being used as wall liner
• CPC Class Codes: B60R 2021/23169 specially adapted for knee protection
• CPC Class Codes: B60R 21/045 associated with the instrument panel or dashboard
• CPC Class Codes: B60R 21/206 in the lower part of dashboards, e.g. for protecting the knees
• CPC Class Codes: B60R 21/23 Inflatable members B60R21/18 takes precedence; connection to inflation fluid source retainers B60R21/217

Abstract

A shock-absorbing front wall for motor vehicles, especially passenger motor vehicles which includes several sections, arranged one above the other, of padded parts projecting into the vehicle interior and permanently deformable by the impact of a vehicle passenger caused by an accident; these sections which are arranged one above the other thereby possess different rigidities and/or thicknesses of the padding layer matched to the impinging body portions; an inflatable gas cushion may also form part of a respective section.

Claims

1. A shock-absorbing front wall for motor vehicles, especially passenger motor vehicles, the shock-absorbing front wall includes shock-absorbing means that are permanently deformable as a result of an impact of a vehicle passenger caused by an accident, said shock absorbing means comprising:

a first shock-absorbing and a second shock-absorbing section, means for independently mounting said first and said second shock-absorbing sections on the front wall of the motor vehicle one above the other in a spaced relationship, said first shock-absorbing section including a first deformation member projecting into the vehicle interior for absorbing the impact energy of at least one impinging body portion of a vehicle passenger, padding means disposed over at least a portion of the outer surface of said first deformation member, said second shock-absorbing section including a second deformation member projecting into the vehicle interior and disposed on the front wall of the vehicle below said first deformation member for absorbing impact energy of at least one other impinging body portion of a vehicle passenger, padding means provided over at least a portion of the outer surface of said second deformation member, said first and said second deformation member each having a different rigidity with the shock-absorbing characteristics of the respective deformation members being matched to the respective body portions impinging thereon, and an inflatable gas cushion means adapted to be automatically inflated in case of an accident mounted on at least one section of said shock-absorbing means.

2. A front wall according to claim 1, wherein said first and second deformation members consist of sheet metal, and wherein said padding means provided on said first and second deformation members is of varying thickness, the thickness of the padding means on the respective deformation members being matched to the respective body portions impinging thereon.

3. A front wall according to claim 2, wherein said first section is provided for the protection of the head and thorax of the vehicle passenger, and said second section is provided for the protection of the legs of the vehicle passenger.

4. A front wall according to claim 1, wherein said first section is provided for the protection of the head and thorax of the vehicle passenger, and said second section is provided for the protection of the legs of the vehicle passenger.

5. A front wall according to claim 1, wherein said inflatable gas cushion means is mounted on said first shock-absorbing section of said shock-absorbing means for absorbing the impact of the head and thorax of a vehicle passenger.

6. A front wall according to claim 5, wherein said gas cushion means in an inflated condition includes a lower portion extending from said first shock-absorbing section above the thighs of a vehicle passenger to an area of the neck of the passenger, an upper portion disposed in an area of the head of the vehicle passenger, and an intermediate portion defining a transitional area from said power portion to said upper portion, said upper and lower portions of said gas cushion means as viewed in a cross section in a vehicle longitudinal plane being constructed approximately semi-circularly shaped in said lower portion and approximately conically shaped in said upper portion.

7. A front wall according to claim 5, wherein a further gas cushion means is provided, said further gas cushion means being mounted on said second shock-absorbing section for absorbing the impact of the legs of a vehicle passenger.

8. A front wall according to claim 7, wherein said padding means on said first and said second deformation members each include an outer surface portion, said gas cushion means and said further gas cushion means in the normal position thereof each including an outer surface portion facing the vehicle passenger, the respective outer surface portions of the respective gas cushion means being disposed approximately in a common plane with the respective outer surface portions of the padding means provided on the respective deformation members.

9. A front wall according to claim 8, wherein said outer surface portions of said gas cushion means and said further gas cushion means are each provided with an elastic protective layer.

10. A front wall according to claim 9, wherein said elastic protective layer consists of a foam material padding.

11. A front wall according to claim 10, wherein said gas cushion means in an inflated condition includes a lower portion extending from said first shock-absorbing section above the thighs of a vehicle passenger to an area of the neck of the passenger, an upper portion disposed in an area of the head of the vehicle passenger, and an intermediate portion defining a transitional area from said lower portion to said upper portion, said upper and lower portions of said gas cushion means as viewed in a cross section in a vehicle longitudinal plane being constructed approximately semi-circularly shaped in said lower portion and approximately conically shaped in said upper portion.

12. A front wall according to claim 5, wherein said padding means on said first deformation member includes an outer surface portion, and wherein said gas cushion means on said first shock-absorbing section in the normal position thereof includes an outer surface portion disposed approximately in a common plane with the outer surface portion of said padding means.

13. A front wall according to claim 5, wherein said outer surface portions of said gas cushion means and said further gas cushion means are each provided with an elastic protective layer.

14. A front wall according to claim 13, wherein said elastic protective layer consists of a foam material padding.

15. A front wall according to claim 1, wherein said deformation members consist of a plastically deformable synthetic material.

16. A front wall according to claim 1, wherein said first deformation member includes a first portion connected to the front wall of the vehicle and extending outwardly therefrom in the direction of a vehicle passenger, a second arcuate portion facing the vehicle passenger and disposed in the area of the thorax of the passenger, and wherein said padding means on said first deformation member is disposed on said first portion of said deformation member and said gas cushion means is mounted on said second arcuate portion of said deformation member.

17. A front wall according to claim 16, wherein said second arcuate portion terminates in a free end, a further padding means is provided on said first deformation member at the free end thereof, said gas cushion means in a normal position extending between said first mentioned padding means on said first deformation member and said further padding means.

18. A front wall according to claim 17, wherein a further gas cushion means is provided, said further gas cushion means being mounted on said second shock-absorbing section for absorbing the impact of the legs of a vehicle passenger.

19. A front wall according to claim 18, wherein said further padding means on said first deformation member projects downwardly from the free end of said first deformation member and contacts said further gas cushion means in an inflated condition thereof.

20. A front wall according to claim 19, wherein said second deformation member includes a first portion connected to the front wall of the vehicle and extending outwardly therefrom, a second portion extending at an angle from said first portion of said second deformation member toward said first portion of said first deformation member, said further gas cushion means being mounted on said second portion of said second deformation member, said padding means on said second deformation member being provided on said first portion of said second deformation member.