Two stage-ignition air bag system for vehicle and igniting method thereof
First Claim
1. A two stage-ignition air bag apparatus for a vehicle, comprising:
- an air bag;
a first inflator configured to ignite when a value according to collision severity has reached a first threshold value in order to inflate the air bag; and
a second inflator configured to ignite at an earlier one of a first time when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and a second time when a predetermined time has passed since the value according to collision severity reached the first threshold value in order to inflate the air bag.
1 Assignment
0 Petitions
Accused Products
Abstract
A two stage-ignition air bag apparatus for a vehicle of the present invention includes an air bag, a first inflator ignited when a value according to collision severity has reached a first threshold value in order to inflate the air bag, and a second inflator ignited at earlier one of times when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and when a predetermined time has passed since the value according to collision severity reached the first threshold value in order to inflate the air bag. Also, a method of igniting the two stage-ignition air bag apparatus of the present invention includes the steps of igniting the first inflator when a value according to collision severity has reached a first threshold value, and igniting the second inflator at earlier one of times when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and when a predetermined time has passed since the value according to collision severity reached the first threshold value.
15 Citations
10 Claims
-
1. A two stage-ignition air bag apparatus for a vehicle, comprising:
-
an air bag;
a first inflator configured to ignite when a value according to collision severity has reached a first threshold value in order to inflate the air bag; and
a second inflator configured to ignite at an earlier one of a first time when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and a second time when a predetermined time has passed since the value according to collision severity reached the first threshold value in order to inflate the air bag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
wherein the velocity difference calculating circuit calculates a velocity difference between a vehicle velocity detected by the vehicle velocity sensor at a time when the collision is detected by the collision sensor and a vehicle velocity detected by the vehicle velocity sensor after the time when the collision is detected. -
8. A two stage-ignition air bag apparatus for a vehicle according to claim 1, wherein the two stage-ignition air bag apparatus for a vehicle can be used as that for a passenger seat.
-
-
9. A two stage-ignition air bag apparatus for a vehicle, comprising:
-
an air bag;
first gas generating means configured to ignite when a value according to collision severity has reached a first threshold value in order to inflate the air bag; and
second gas generating means configured to ignite at an earlier one of a first time when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and a second time when a predetermined time has passed since the value according to collision severity reached the first threshold value in order to inflate the air bag.
-
-
10. A method of igniting a two stage-ignition air bag apparatus for a vehicle including a first inflator and a second inflator comprising:
-
igniting the first inflator when a value according to collision severity has reached a first threshold value; and
igniting the second inflator at an earlier one of a first time when the value according to collision severity has substantially reached a second threshold value that is greater than the first threshold value and a second time when a predetermined time has passed since the value according to collision severity reached the first threshold value.
-
Specification