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US 6,554,313 B2Granted
Air bag system
AssigneeNone recorded
InventorToshiki Uchida
Life of this patent
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AssigneeNone recorded
InventorToshiki Uchida
Estimating the term…
Provided is a safer air bag system which relieves shock to the head and face of an occupant when an air bag inflates and deploys. An air bag body 1 consists of a primary air bag 2 and a secondary air bag 3 which is provided on the front surface of the primary air bag 2. When an inflator 4 is actuated, the high-pressure gas is introduced into the primary air bag 2 to inflate and deploy the primary air bag 2 and then fed into the secondary air bag 3 through gas introducing ports 6 of the primary air bag 2 so that the secondary air bag 3 inflates and deploys more slowly than the primary air bag 2. The secondary air bag 3 thus absorbs shock to the face of the occupant caused by the inflation and deployment of the primary air bag 2.
An air bag system, comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
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Characterised by their shape, construction or spatial configuration: comprising a plurality of individual compartments; comprising two or more…
Body parts of the occupant or pedestrian affected by the accident: head
Comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other: inner walls crating separate…
Characterised by their material: characterised by material
Term ended 19 Apr 2021 (estimated)
1. Field of the Invention
The present invention relates to an air bag system for protecting occupants from impact during a car accident.
2. Description of the Related Art
FIG. 1 is a side sectional view showing an air bag system of an embodiment of the present invention when inflating and deploying;
FIG. 2 is a perspective view of the air bag system when inflating and deploying;
FIG. 3 is a sectional view of the air bag system when inflating and deploying;
A preferred embodiment of the present invention will be explained below referring to FIGS. 1 to 4.
An air bag system of an embodiment of the present invention comprises an air bag body 1 mainly made of nylon which consists of a primary air bag 2 and a secondary air bag 3, said secondary air bag 3 being adhered to the front surface of the primary air bag 2 or on the side facing an occupant who is to be protected by the air bag system, an inflator 4 which is a gas ejector for introducing a high-pressure gas to inflate and deploy the air bag body 1 at the time of collision, and an outer sensor switch (not shown) which is mounted on a bumper or the like of an automobile for detecting a collision. The air bag body 1 along with the inflator 4 is housed within a center pad 5a of a steering wheel 5. When the inflator 4 is actuated, a high-pressure gas is first introduced into the primary air bag 2 to inflate and deploy the primary air bag 2 and then fed into the secondary air bag 3 through the primary air bag 2.
On the front surface of the primary air bag 2, gas introducing ports 6 for introducing the high-pressure gas into the secondary air bag 3 are provided. In this embodiment, the gas introducing ports 6 are 14 round-shape holes each having a diameter of 10 mm. The high-pressure gas introduced into the secondary air bag 3 is limited by the gas introducing ports 6. Thus, the dimension and number of the gas introducing ports 6 define the flow rate of the gas introduced into the secondary air bag 3 and decide the inflating and deploying velocity of the secondary air bag 3. In other words, the lower flow rate of the gas passing through the gas introducing ports 6 relieves shock to the face by the inflating and deploying air bag body 1.