Integral inflatable occupant restraint system

• US 5,184,844 A
• Filed: 01/17/1992
• Issued: 02/09/1993
• Est. Priority Date: 11/27/1990
• Status: Expired due to Fees

• Current Assignee: XSCI Incorporated
• Original Assignee: GOOR Associates Incorporated
• Inventors: Goor, Dan
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US07/822,272
• Time in Patent Office: 389 Days
• Field of Search: 280/728, 280/730, 280/733, 280/801, 280/808, 297/293
• US Class Current: 280/733
• CPC Class Codes: B60R 2021/01317 monitoring seat belt tensiont
• CPC Class Codes: B60R 2021/022 mounted on seats
• CPC Class Codes: B60R 2021/23153 specially adapted for rear seat passengers
• CPC Class Codes: B60R 21/01 Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343
• CPC Class Codes: B60R 21/02 Occupant safety arrangements or fittings , e.g. crash pads seat belts with crash pads B60R22/14; removable children's seats having a front guard or barrier B60N2/2839
• CPC Class Codes: B60R 21/16 Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags protective garments with automatically inflatable shock-absorbing means A41D13/018; connection of valves to inflatable elastic bodies B60C29/00
• 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 21/2072 in children's seats

Abstract

An inflatable restraint system for providing protection to an occupant in a moving vehicle including a module disposed adjacent to the chest area of the vehicle occupant, the module having an airbag and an high pressure gas generator for exerting a controlled force against the occupant in a direction opposite the direction of motion of the occupant caused by rapid deceleration of the vehicle while simultaneously inflating the airbag adjacent to the occupant. A second embodiment is disclosed which includes an ancillary module disposed adjacent to the rear base of the occupant'"'"'s neck, providing an airbag for inflation behind the occupant'"'"'s head while simultaneously exerting a force opposite the direction of the motion of the occupant'"'"'s head, as caused by the backlash forces acting against the occupant following initial impact of the occupant with a forward airbag. A third embodiment is disclosed wherein an airbag is in incorporated into a child safety seat providing protection from frontal and lateral impact. A fourth embodiment is disclosed for rear seat passenger protection.

Claims

1. A child safety seat incorporating an inflatable restraint system for protecting an occupant of said child safety seat in a moving vehicle upon rapid deceleration thereof, comprising:

a child seat, wherein said child seat is adapted for use in said moving vehicle;

at least one restraint module mounted on said child seat adjustably disposed adjacent to said occupant, said at least one restraint module comprising;

an inflatable bag for deployment from said at least one restraint module in a direction away from said occupant;

a high pressure gas generator for inflating said inflatable bag and for exerting a reactionary force against said occupant in a direction opposite the direction of inflation of said inflatable bag;

at least one sensor means, coupled to said high pressure gas generator for providing an output signal to trigger said inflation upon detection of a predetermined event.

2. The child safety seat of claim 1, further including:

a cushion being disposed between said module and said occupant for dispersing said reactionary force generated by said high pressure gas generator.

3. The child safety seat of claim 1 wherein said at least one sensor means includes:

at least one motion sensor coupled to said at least one restraint module for detecting acceleration of said occupant to provide said output signal to said high pressure gas generator upon detection of a predetermined magnitude of acceleration.

4. The child safety seat of claim 1 wherein said at least one sensor means includes:

at least one impact sensor means coupled to said vehicle for detecting an impact force against said vehicle to provide said output signal to said high pressure gas generator upon detection of a predetermined magnitude of impact force.

5. The child safety seat of claim 1 wherein said at least one sensor means includes:

at least one pressure sensor coupled to said at least one restraint module for detecting pressure between said at least one restraint module and said occupant to provide said output signal to said high pressure gas generator upon detection of a predetermined magnitude of pressure.

6. The child safety seat of claim 1, further including:

microprocessor means coupled between said at least one sensor means and said high pressure gas generator, said microprocessor means being programmable to provide a trigger signal to said high pressure gas generator in response to said output signal from any one of said at least one sensing means.

7. The child safety seat of claim 1, further including:

microprocessor means coupled between said at least one sensor means and said high pressure gas generator, said microprocessor means being programmable to provide a trigger signal to said high pressure gas generator in response to said output signal from a predetermined plurality of at least one sensing means.

8. The child safety seat of claim 1, further including:

arming means for engaging and disengaging said at least one sensor means to prevent accidental activation thereof.

9. The child safety seat of claim 8, further including:

microprocessor means coupled between said at least one sensor means, said arming means and said high pressure gas generator;

said microprocessor means being programmable to provide a trigger signal to said high pressure gas generator in response to an engagement signal from said arming means and said output signal from any one of said at least one sensing means.

10. The child safety seat of claim 8, further including:

microprocessor means coupled between said at least one sensor means, said arming means and said high pressure gas generator;

said microprocessor means being programmable to provide a trigger signal to said high pressure gas generator in response to an engagement signal from said arming means and said output signal from a predetermined plurality of said at least one sensing means.

11. The child safety seat of claim 8, wherein said arming means includes manual switch means to engage and disengage said sensor means.

12. The child safety seat of claim 8, wherein said arming means includes a pressure switch means for detecting the presence of said occupant to engage said sensor means in response to the detection of said occupant.

13. The child safety seat of claim 1, further including a shoulder harness disposed over the upper torso of said occupant, said at least one restraint module being disposed thereon.

14. The child safety seat of claim 1, having a restraining pad coupled to a shoulder harness, said at least one restraint module being disposed thereon.

15. The child safety seat of claim 1, wherein said child safety seat is easily removable from said vehicle.

16. The child safety seat of claim 1, wherein said child safety seat is adapted for permanent installation in said vehicle.

17. The child safety seat of claim 1, wherein said child safety seat further comprises:

a first telescoping arm flexibly attached to said at least one restraint module for pivotally connecting said restraint module to said child seat or an extension thereof;

a second telescoping arm flexibly attached to said at least one restraint module for pivotally connecting said restraint module to said child seat or an extension thereof; and

a locking means for stabilizing an axial orientation of said at least one restraint module.

18. The child safety seat of claim 17, wherein said extension is a rail.

19. The child safety seat of claim 1, wherein said high pressure gas generator is pyrotechnic.

20. The child safety seat of claim 1, wherein said high pressure gas generator is highly compressed gas.

21. The child safety seat of claim 1, wherein said high pressure gas generator is a rapid chemical reaction.

22. The child safety seat of claim 1, further including:

a preinflated cushion disposed inside said inflatable bag, said inflatable bag having an approximate full inflation volume, for reducing an inflation rate of said inflatable bag by releasing

into said inflatable bag a portion of said full inflation volume of a gas upon triggering said high pressure gas generator, and for further providing a cushion in the event of failure of said inflatable restraint system.

23. A vehicle independent child safety seat comprising:

a plurality of inflatable bags for deployment in a direction away from an occupant of said vehicle;

a mounting means for holding said plurality of inflatable bags adjacent said occupant;

at least one high pressure gas generator for inflating said plurality of inflatable bags and for exerting a reactionary force against said occupant in a direction opposite the direction of inflation of each said plurality of inflatable bags;

a control means responsive to at least one sensor means and a system user for directing high pressure gas from said at least one high pressure gas generator to said plurality of inflatable bags in a predetermined sequence; and

at least one sensor means, coupled to said control means and said high pressure gas generator for providing an output signal to trigger said inflation upon detection of a predetermined event.

24. The vehicle independent child safety seat of claim 23 wherein said predetermined event is a frontal impact upon said vehicle.

25. The vehicle independent child safety seat of claim 23 wherein said predetermined event is a lateral impact upon said vehicle;

26. The vehicle independent child safety seat of claim 23 wherein said predetermined event is a vehicle crash

27. The vehicle independent child safety seat of claim 23, further including:

a preinflated cushion disposed inside each of said plurality of inflatable bags, each of said plurality of inflatable bags having an approximate full inflation volume, for reducing an inflation rate of each of said plurality of inflatable bags by releasing into each of said plurality of inflatable bags a portion of said full inflation volume of a gas upon triggering said at least one high pressure gas generator, and for further providing a cushion in the event of failure of any of said plurality of inflatable bags to deploy.

29. The passenger restraint of claim 23, further including:

a preinflated cushion disposed inside each of said at least one inflatable bag, said at least one inflatable bag having an approximate full inflation volume, for reducing an inflation rate of said at least one inflatable bag by releasing into said at least one inflatable bag a portion of said full inflation volume of a gas upon triggering said high pressure gas generator, and for further providing a cushion in the event of failure of said inflatable restraint system.

28. A vehicle independent inflatable passenger restraint system comprising:

at least one inflatable bag for deployment in a direction away from an occupant of said vehicle;

a high pressure gas generator for inflating said at least one inflatable bag and for exerting a reactionary force against said occupant in a direction opposite the direction of inflation of said at least one inflatable bag;

at least one sensor means, coupled to said high pressure gas generator for providing an output signal to trigger said inflation upon detection of a predetermined event;

an articulated structure mounted to a portion of said vehicle, 13 wherein said articulated structure includes said at least one inflatable bag, and is positionable adjacent said occupant.