Airbag device

Details Airbag device Airbag device

1999-05-11

2000-12-26

Mai, Lanna

Land vehicles

Wheeled

Attachment

280735, B60R 2126

Patent

active

061646946

ABSTRACT:
An airbag device has an inflator to charge a small amount of gas into an airbag so as to inflate the airbag at a low internal pressure when an occupant is in proximity to the airbag device, and charges a large amount of gas into the airbag so as to inflate the airbag largely when the occupant is apart from the airbag device sufficiently. When an ignition signal is generated, a first igniter is fed currency first of all to generate a gas from a gas generating agent within a first compartment 6 and an airbag 1 begins to expand. When an occupant P is in proximity to the airbag device, the airbag 1 contacts with the occupant P immediately after starting to expand and a distance between a static pad 12 and an opposite pad 20 increases slowly. A static capacity detected in a static capacity detecting circuit 30 decreases slowly. When the static capacity exceeds a threshold value at a point when 10 millisecond have passed after an input of the ignition signal, a second igniter 9 is triggered.

REFERENCES:
patent: 4950458 (1990-08-01), Cunningham
patent: 5957490 (1999-09-01), Sinnhuber
patent: 5964478 (1999-10-01), Stanley et al.
"Frontal Shock 7. The Evolution of Material Used for Shock Detection,"W. Suchowerskyj, de l'Ingenieurs Automobile [Automotive Engineers]SIA, Paris, periodical 1141, No. 6, 1982, pp. 69-77.

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