Air bag device
First Claim
1. An air bag device adapted to be attached to a center area of a steering wheel for protecting an occupant of a vehicle, comprising:
- a steering pad attached to the center area of the steering wheel,an inflator situated in the steering pad,a first air bag retained in the steering pad and having a gas inlet attached to the inflator, said first air bag being inflated by the inflator upon collision of the vehicle to protect the occupant,a second air bag having an annular shape and fixed around the first air bag at a fixing portion, said second air bag, upon inflation of the first and second air bags, being located between the steering wheel and the first air bag,a plurality of gas communicating holes formed in the fixing portion for communication between the first and second air bags so that when the inflator is actuated, the second air bag is inflated by gas passing through the gas communicating holes while the first air bag is being inflated, anda vent hole formed in the first air bag, gas in the first air bag being exhausted through the vent hole while the gas in the second air bag is kept as it is when the occupant hits the first air bag after the first air bag is inflated so that force applied to the first air bag by the occupant is absorbed without a rebound phenomenon by the first air bag and without easing the rebound phenomenon by the second air bag.
1 Assignment
0 Petitions
Accused Products
Abstract
An air bag device is formed of a first air bag accommodated in a steering pad and receiving an occupant by the inflation and deployment at a collision and a second air bag seamed with a portion of the first air bag and being inflatable in a ring shape to cover a surface of a steering wheel facing to the occupant. The first air bag and the second air bag have gas communicating holes at a seaming portion between them. The first air bag is inflated by introducing gas a gas generating device connected to a gas inlet of said first air bag and the second air bag is inflated at the same time by introducing gas through the gas communicating holes.
92 Citations
9 Claims
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1. An air bag device adapted to be attached to a center area of a steering wheel for protecting an occupant of a vehicle, comprising:
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a steering pad attached to the center area of the steering wheel, an inflator situated in the steering pad, a first air bag retained in the steering pad and having a gas inlet attached to the inflator, said first air bag being inflated by the inflator upon collision of the vehicle to protect the occupant, a second air bag having an annular shape and fixed around the first air bag at a fixing portion, said second air bag, upon inflation of the first and second air bags, being located between the steering wheel and the first air bag, a plurality of gas communicating holes formed in the fixing portion for communication between the first and second air bags so that when the inflator is actuated, the second air bag is inflated by gas passing through the gas communicating holes while the first air bag is being inflated, and a vent hole formed in the first air bag, gas in the first air bag being exhausted through the vent hole while the gas in the second air bag is kept as it is when the occupant hits the first air bag after the first air bag is inflated so that force applied to the first air bag by the occupant is absorbed without a rebound phenomenon by the first air bag and without easing the rebound phenomenon by the second air bag. - View Dependent Claims (2, 3)
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4. An air bag device adapted to be attached to a center area of a steering wheel for protecting an occupant of a vehicle, comprising:
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a steering pad attached to the center area of the steering wheel, an inflator situated in the steering pad, a first air bag retained in the steering pad and being inflated by the inflator upon collision of the vehicle to protect the occupant, a second air bag fixed to the first air bag and having a gas inlet attached to the inflator, said second air bag, upon inflation of the first and second air bags, being located between the steering wheel and the first air bag, a plurality of gas communicating holes formed between the first and second air bags so that when the inflator is actuated, the first air bag is inflated by gas passing through the second air bag, and a vent hole formed in the first air bag, gas in the first air bag being exhausted through the vent hole while the gas in the second air bag is kept as it is when the occupant hits the first air bag after the first air bag is inflated so that force applied to the first air bag by the occupant is surely absorbed without a rebound phenomenon by the first air bag and without easing the rebound phenomenon by the second air bag. - View Dependent Claims (5, 6, 7)
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8. An air bag device adapted to be attached to a center area of a steering wheel for protecting an occupant of a vehicle, comprising:
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a steering pad attached to the center area of the steering wheel, first and second inflators vertically arranged to each other and situated in the steering pad, a first air bag retained in the steering pad and having a first gas inlet attached to the first inflator, said first air bag being inflated upon collision of the vehicle to protect the occupant, and a second air bag fixed to an outside of the first air bag at an outer periphery thereof, said second air bag having a second gas inlet attached to the second inflator and, upon inflation of the second inflator, said second air bag being located between the steering wheel and the first air bag and inflated at a pressure greater than a pressure in the first air bag to thereby provide the pressure without easing the rebound phenomenon by the second air bag. - View Dependent Claims (9)
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Specification