Air bag apparatus for vehicle
First Claim
1. An air bag apparatus for a vehicle, comprising:
- an air bag unit, including(a) an air bag,(b) an electrically ignitable inflating means,(c) a plurality of acceleration sensors, wherein at least two of said acceleration sensor are of different kinds, wherein each of said acceleration sensors controls electric current supply to said inflating means and wherein, said air bag, inflating means, and acceleration sensors are disposed in a single place proximal to one another, said air bag unit further including,a capacitor which services as a backup power source and is provided in parallel with a main power source for supplying electric current to said inflating means.a wrong operation preventing switch which is switched by mounting or removing said air bag unit and is so operated to cut off an electrical connection between said main power source, as well as said capacitor, and said inflating means when said air bag unit is removed, anda circuit for discharging said capacitor, said circuit being closed in interlocking with the cutting off of the electrical connection between said main power source, as well as said capacitor, and said inflating means.
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Accused Products
Abstract
An air bag apparatus for a vehicle is characterized in that an air bag, an inflator and acceleration sensors for controlling the inflator are closely disposed in a single place to constitute an air bag unit. The acceleration sensors in the air bag unit are made up of a plurality of acceleration sensors of different kinds. The air bag unit is disposed on a steering wheel and each of the acceleration sensors is disposed such that the direction of movement of a movable element to be provided in each of the acceleration sensors is parallel to an axis of rotation of the steering wheel. The inflator is electrically ignited and each of the acceleration sensors controls the electric current supply to the inflator.
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Citations
2 Claims
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1. An air bag apparatus for a vehicle, comprising:
an air bag unit, including (a) an air bag, (b) an electrically ignitable inflating means, (c) a plurality of acceleration sensors, wherein at least two of said acceleration sensor are of different kinds, wherein each of said acceleration sensors controls electric current supply to said inflating means and wherein, said air bag, inflating means, and acceleration sensors are disposed in a single place proximal to one another, said air bag unit further including, a capacitor which services as a backup power source and is provided in parallel with a main power source for supplying electric current to said inflating means. a wrong operation preventing switch which is switched by mounting or removing said air bag unit and is so operated to cut off an electrical connection between said main power source, as well as said capacitor, and said inflating means when said air bag unit is removed, and a circuit for discharging said capacitor, said circuit being closed in interlocking with the cutting off of the electrical connection between said main power source, as well as said capacitor, and said inflating means. - View Dependent Claims (2)
Specification