Inflatable restraint assembly for vehicles

• US 6,209,908 B1
• Filed: 12/23/1999
• Issued: 04/03/2001
• Est. Priority Date: 12/23/1999
• Status: Expired due to Term

• Current Assignee: Z/C Holding Company
• Original Assignee: Z/C Holding Company
• Inventors: Zumpano, Bernard J.
• Primary Examiner(s): English, Peter C.
• Application Number:
  US09/470,922
• Time in Patent Office: 467 Days
• Field of Search: 280/729, 280/730.1, 280/735, 280/736, 280/742, 280/737
• US Class Current: 280/729
• CPC Class Codes: B60N 2/286 forward facing B60N2/2866 takes precedence
• CPC Class Codes: B60N 2/2884 with protection systems against abnormal g-forces
• CPC Class Codes: B60R 2021/0004 Frontal collision
• CPC Class Codes: B60R 2021/0006 Lateral collision
• CPC Class Codes: B60R 2021/0011 Rear collision or recoiling bounce after frontal collision
• CPC Class Codes: B60R 2021/01211 Expansion of air bags
• CPC Class Codes: B60R 2021/2074 in head rests
• CPC Class Codes: B60R 2021/23107 the bag being integrated in a multi-bag system
• CPC Class Codes: B60R 2021/23324 Inner walls crating separate compartments, e.g. communicating with vents
• CPC Class Codes: B60R 2021/26094 characterised by fluid flow controlling valves
• CPC Class Codes: B60R 2021/2765 comprising means to control the venting
• CPC Class Codes: B60R 21/01508 detecting forces or pressure in bags or modules
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/18 the inflatable member formed as a belt or harness or combined with a belt or harness arrangement
• CPC Class Codes: B60R 21/203 in steering wheels or steering columns
• CPC Class Codes: B60R 21/2072 in children's seats
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/233 comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other B60R21/232 takes precedence

Abstract

An inflatable restraint system intended for use primarily, but not exclusively, within motor vehicles to protect occupants from injury resulting from a collision, crash or other impact type of accident in which the vehicle is involved. A plurality of inflatable members are mounted at a plurality of strategic locations relative to the various positions assumed by occupants within the vehicle, such that upon the vehicle being impacted, a central processing unit or like processor structured to sense the impact will automatically inflate the inflatable members so that they assume a protective position which will interact with the occupant in a manner which, unlike conventional airbags, both actively absorbs and resists the force of the impact resulting from the occupant coming into contact, at an accelerated rate, with the inflatable member(s). The processor is operatively connected to a valve assembly disposed in regulating relation to air flow both into and out of the inflatable member, and is further responsive to a pressure sensor assembly, so as to actively regulate pressure within the inflatable member and thereby minimize repetitive acceleration-deceleration motion of the occupant by both absorbing and resisting the force of impact of the occupant on the inflatable member.

Claims

1. An inflatable restraint assembly for motor vehicles, said restraint assembly comprising:

a) at least one inflatable member mounted within the vehicle adjacent an intended position of an occupant,

b) a fluid source connected in communication with said inflatable member,

c) a valve assembly mounted in flow regulating relation between said fluid source and said inflatable member,

d) means for sensing pressure within said inflatable member, and

e) a processor operatively connected to said valve assembly and said pressure sensing means, wherein said processor actively and continuously regulates pressure within said inflatable member in response to at least an initial impact force of the occupant with said inflatable member.

2. An assembly as recited in claim 1 wherein said pressure within at least a portion of said inflatable member is incrementally increased above an initial inflation pressure in response to the force of impact of the occupant.

3. An assembly as recited in claim 2 wherein said processor determines a summation of pressure within said inflatable member which does not exceed the impact force of the occupant with said inflatable member.

4. An assembly as recited in claim 2 wherein pressure in at least a portion of said inflatable member is reduced to the initial inflation pressure subsequent to the initial impact of the occupant with said inflatable member.

5. An assembly as recited in claim 1 wherein said processor is structured to actively regulate pressure within said inflatable member in response to each of a plurality of a successive impact forces of the occupant with said inflatable member.

6. An assembly as recited in claim 5 wherein pressure within at least a portion of said inflatable member is reduced to the initial inflation pressure subsequent to each of the plurality of successive impact forces.

7. An assembly as recited in claim 1 wherein said pressure sensing means comprises a sensor assembly operatively connected to said inflatable member and disposed to sense pressure within said inflatable member and relay the sensed pressure to said processor.

8. An assembly as recited in claim 7 wherein said sensor assembly and said processor are cooperatively disposed and structured to summate pressure within said inflatable member and compare and regulate the pressure therein in response to the impact force of the occupant with said inflatable member.

9. An assembly as recited in claim 8 wherein said processor determines a summation of pressure within said inflatable member which does not exceed the impact force of the occupant with said inflatable member.

10. An assembly as recited in claim 1 further comprising an impact absorption zone and an impact resistance zone formed on the interior of said inflatable member in fluid segregated relation to one another, said impact absorption zone and said impact resistance zone having at least initially different pressures upon inflation.

11. An assembly as recited in claim 10 wherein said pressure sensing means comprises a sensor assembly operatively connected to said inflatable member and disposed to sense pressure within both said impact absorption zone and said impact resistance zone and relay the sensed pressures to said processor.

12. An assembly as recited in claim 11 wherein said sensor assembly and said processor are cooperatively disposed and structured to summate pressure within said impact absorption zone and said impact resistance zone and compare and regulate the sensed pressures in response to the impact force of the occupant with said inflatable member.

13. An assembly as recited in claim 12 wherein said impact resistance zone has an initially greater pressure than said impact absorption zone upon inflation.

14. An assembly as recited in claim 13 wherein said impact absorption zone is structured to have a continuously reducing internal pressure in response to the initial impact force of the occupant with said inflatable member.

15. An assembly as recited in claim 14 wherein said valve assembly and said processor are interconnected and cooperatively structured to provide an incremental pressure increase in said impact resistance zone in response to the initial impact force of the occupant with said inflatable member.

16. An assembly as recited in claim 15 wherein a summation of internal pressures within said impact resistance zone and said impact absorption zone is equal to or less than the impact force of the occupant with said inflatable member.

17. An assembly as recited in claim 10 wherein said inflatable member comprises a plurality of chambers disposed internally of said inflatable member and being at least partially segregated from one another, said valve assembly operatively disposed in flow regulating relation between said fluid source and said plurality of chambers.

18. An assembly as recited in claim 10 wherein said impact absorption zone comprises a first plurality of chambers at least partially separated by a partition.

19. An assembly as recited in claim 18 wherein said impact absorption zone comprises a continuously reduced pressure in response to receiving the initial impact force of the occupant with said inflatable member.

20. An assembly as recited in claim 19 wherein said partition comprises an apertured construction disposed to allow fluid flow from a leading one to a trailing one of said first plurality of chambers whereby the initial impact force is at least partially absorbed.

21. An assembly as recited in claim 19 wherein said processor and said valve assembly are cooperatively structured to facilitate at least partial deflation of said first plurality of chambers substantially at the time of the initial impact force of the occupant with said inflatable member.

22. An assembly as recited in claim 19 wherein said impact resistance zone comprises at least a second plurality of chambers each comprising an initial pressure upon inflation, said pressure sensing means and said processor cooperatively structured to incrementally increase said initial pressure in response to the initial impact force of the occupant with said inflatable member.

23. An assembly as recited in claim 22 wherein said second plurality of chambers comprise a reduced pressure substantially equal to the initial inflation pressure immediately subsequent to exposure of the inflatable member to the initial impact force.

24. An inflatable restraint assembly for a motor vehicle, said assembly comprising:

a) at least one inflatable member mounted within the vehicle adjacent an intended position of an occupant,

b) said inflatable member comprising a first plurality of internally disposed chambers def ining an impact absorption zone and a second plurality of internally disposed chambers defining an impact resistance zone,

c) a fluid source connected in fluid communication with both said first and second plurality of chambers,

d) a valve assembly mounted in flow regulating relation between said fluid source and said first and second plurality of chambers,

e) a sensor assembly operatively connected to said inflatable member and structured to determine pressure within said first and second plurality of chambers,

f) a processor operatively connected to at least said valve assembly and responsive to said sensor assembly to continuously regulate flow of fluid to and from said first and second plurality of chambers, and

g) said processor and said valve assembly cooperatively structured to establish a predetermined gradient pressure differential between said impact absorption and said impact resistance zones based on an impact force of an occupant with said inflatable member.

25. An assembly as recited in claim 24 wherein said processor and said valve assembly are cooperatively structured to facilitate at least a partial deflation of said first plurality of chambers substantially at the time of and in response to an initial impact force of an occupant with said inflatable member.

26. An assembly as recited in claim 25 wherein said second plurality of chambers each comprise an initial pressure upon inflation, said sensor assembly and said processor being cooperatively structured to incrementally increase said initial pressure in response to the initial impact force of the occupant with said inflatable member.

27. An assembly as recited in claim 26 wherein said second plurality of chambers comprises a reduced pressure substantially equal to the initial inflation pressure immediately subsequent to exposure of the inflatable member to the initial impact force.

28. An assembly as recited in claim 25 wherein adjacent ones of said first plurality of chambers are separated from one another by a partition, said partition comprising an apertured construction disposed to allow fluid flow from a leading one to a trailing one of said first plurality of chambers, whereby the initial impact force is at least partially absorbed.

29. An inflatable restraint assembly for a motor vehicle, said assembly comprising:

a) at least a first inflatable member and a second inflatable member mounted in the vehicle adjacent to an intended position of an occupant,

b) said first and second inflatable members disposed in substantially opposed relation to one another and cooperatively positioned to restrain substantially oppositely directed motions of the occupant,

c) each of said first and second inflatable members comprising a first plurality of internally disposed chambers defining an impact absorption zone and a second plurality of internally disposed chambers defining an impact resistance zone,

d) a fluid source connected in fluid communication with both said first and second plurality of chambers of each of said first and second inflatable members,

e) a valve assembly mounted in flow regulating relation between said fluid source and said first and second plurality of chambers of each of said first and second inflatable members,

f) a sensor assembly operatively connected to each of said first and second inflatable members and structured to determine pressure within said first and second plurality of chambers,

g) a processor operatively connected to at least said valve assembly and responsive to said sensor assembly to continuously regulate flow of fluid into and out of said first and second plurality of chambers of each of said first and second inflatable members, and

h) said processor and said valve assembly cooperatively structured to establish a predetermined gradient pressure differential between said impact absorption and said impact resistance zones of each of said first and second inflatable members in response to the impact force of an occupant with said first and second inflatable members.

30. An assembly as recited in claim 29 wherein said sensor assembly is structured to relay sensed pressure of said first inflatable member responsive to the impact force of an occupant with said first inflatable member to said processor for regulation of the pressure within said second inflatable member.