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US 7,111,866 B2Granted
Airbag and airbag system
AssigneeTakata Corporation
InventorsKazuhiro Abe, Rika Senoh
Life of this patent
Estimating the term…
Abstract
An airbag and airbag system for a driver's seat. The airbag and airbag system is capable of maintaining high inner pressure for a long time even with the use of a low-capacity inflator. The airbag is also capable of having a first and second chamber divided by an inner panel where the second chamber is deployed and inflated earlier. The internal pressure of the airbag and the speed of deployment of the airbag may be adjusted for the first and second chamber individually.
Claims27
An airbag comprising openings in a rear panel for receiving inflation gas and a front panel configured to face an occupant of a vehicle wherein:
- the interior of the airbag is partitioned into a central chamber facing the openings, an outer-peripheral front chamber arranged on the outer periphery of the central chamber adjacent to the front panel, and an outer-peripheral rear chamber arranged on the outer periphery of the central chamber adjacent to the rear panel;
- the outer-peripheral rear chamber communicates with the exterior of the airbag through vent holes;
- the central chamber communicates directly with the outer-peripheral front chamber and the outer-peripheral rear chamber;
- the outer-peripheral front chamber and the outer-peripheral rear chamber communicate with each other only via the central chamber;
- and
- wherein the airbag is configured so that the gas for inflating the airbag flows from the central chamber into the outer-peripheral front chamber and the outer-peripheral rear chamber.
3 more elements
An airbag comprising openings for supplying gas on the rear and facing an occupant in inflation on the front, wherein:
- the interior of the airbag is partitioned into a central chamber facing the openings, an outer-peripheral front chamber arranged on the outer periphery of the central chamber adjacent to the front, and an outer-peripheral rear chamber arranged on the outer periphery of the central chamber adjacent to the rear;
- the outer-peripheral rear chamber communicates with the exterior of the airbag through vent holes;
- the central chamber communicates directly with the outer-peripheral front chamber and the outer-peripheral rear chamber;
- the outer-peripheral front chamber and the outer-peripheral rear chamber communicate directly with each other;
- and
- wherein the airbag is configured so that the gas for inflating the airbag flows from the central chamber into the outer-peripheral front chamber and the outer-peripheral rear chamber.
3 more elements
An airbag system comprising an airbag and an inflator for inflating the airbag, wherein:
- the interior of the airbag is partitioned into a central chamber facing the openings, an outer-peripheral front chamber arranged on the outer periphery of the central chamber adjacent to the front, and an outer-peripheral rear chamber arranged on the outer periphery of the central chamber adjacent to the rear;
- the outer-peripheral rear chamber communicates with the exterior of the airbag through vent holes;
- the central chamber communicates directly with the outer-peripheral front chamber and the outer-peripheral rear chamber;
- the outer-peripheral front chamber and the outer-peripheral rear chamber communicate with each other only via the central chamber;
- and
- wherein the airbag is configured so that the gas for inflating the airbag flows from the central chamber into the outer-peripheral front chamber and the outer-peripheral rear chamber;
- and
- gas from the inflator is supplied to the central chamber.
5 more elements
An airbag system comprising an airbag and an inflator for inflating the airbag, wherein:
- the interior of the airbag is partitioned into a central chamber facing the openings, an outer-peripheral front chamber arranged on the outer periphery of the central chamber adjacent to the front, and an outer-peripheral rear chamber arranged on the outer periphery of the central chamber adjacent to the rear;
- wherein the outer-peripheral rear and front chambers communicate directly with the exterior of the airbag through vent holes;
- and
- wherein the central chamber communicates directly with the outer-peripheral front chamber and the outer-peripheral rear chamber;
- and
- wherein the airbag is configured so that the gas for inflating the airbag flows from the central chamber into the outer-peripheral front chamber and the outer-peripheral rear chamber;
- and
- gas from the inflator is supplied to the central chamber.
5 more elements
An airbag system comprising:
- an airbag having openings for receiving an inflation gas in a rear panel and having front panel configured to face an occupant;
- and
- an inflator for inflating the airbag, wherein:
- the interior of the airbag includes:
- a central rear chamber arranged adjacent the rear panel and facing the openings;
- a front chamber arranged adjacent the front panel;
- and
- an outer-peripheral chamber arranged on the outer periphery of the central rear chamber;
- wherein the central rear chamber, the front chamber, and the outer-peripheral chamber communicate with one another;
- and
- wherein the inflator includes a plurality of gas generators configured to generate gas with different timings.
8 more elements
An airbag system comprising:
- an airbag having a front panel and a rear panel;
- the front panel and the rear panel being joined at the peripheral edges thereof;
- the rear panel comprising a central opening for receiving a gas generator;
- an inner panel for dividing the interior of the airbag into a centrally located first chamber and a second chamber surrounding the first chamber;
- the inner panel including a central opening substantially concentric with the opening of the rear panel;
- and
- the inner panel being joined along the peripheral edge thereof on the distal end side to the front panel at the midsection between the central portion and the peripheral edge thereof,
- wherein the gas generator includes first and second gas generating units, wherein the gas generating units each include a gas injection port;
- and
- wherein the inner panel includes a port that permits fluid communication between the first chamber and the second chamber, the port being positioned to oppose the gas injection port of the first gas generating unit and wherein the gas injection port of the second gas generating unit does not oppose the port of the inner panel when the airbag is deployed.
7 more elements
An airbag system comprising:
- an airbag having first and second chambers and a plurality of ports that are configured to permit fluid communication between the first and second chambers;
- wherein each port is positioned directly opposite a gas injection port of a gas generating unit.
An airbag system comprising:
- a gas generator;
- and an airbag, the airbag includes:
- a front panel and a rear panel, the circumferential portions of the front panel and the rear panel being bonded to each other, wherein the rear panel has a gas-generator-engaging opening formed at the central part thereof,
- an inner panel for partitioning the inner space of the airbag into a central first compartment and a second compartment encircling the first compartment,
- wherein the inner panel has a central opening almost concentric with the opening of the rear panel,
- wherein the front circumferential portion of the inner panel is bonded to an intermediate portion lying between a central portion and the circumferential portion of the front panel,
- wherein the inner panel has at least one communication port formed close to the rear thereof, for mutual communication of the first compartment and the second compartment, and
- wherein the communication port lies on the line extending along a gas-discharge direction of the gas generator when the airbag is inflated.
5 more elements
An airbag apparatus comprising:
- an airbag and a gas generator having at least one gas-discharge opening,
- wherein at least the front of the gas generator is disposed in the airbag and the gas-discharge opening is disposed in the airbag,
- wherein the airbag includes a front panel and a rear panel disposed remote from the passenger, the circumferential portions of the front panel and the rear panel being bonded to each other,
- wherein the rear panel has a gas-generator-engaging opening formed at the central part thereof,
- wherein the airbag further includes an inner panel for partitioning the inner space of the airbag into a central first compartment and a second compartment encircling the first compartment,
- wherein the inner panel has an opening formed at the central part thereof so as to be almost concentric with the opening of the rear panel,
- wherein the front circumferential portion of the inner panel is bonded to an intermediate portion lying between the central portion and the circumferential portion of the front panel,
- wherein the inner panel includes a port that permits fluid communication between the first compartment and the second compartment, wherein the port is located on a line extending in a direction that gas is discharged from the gas-discharge opening of the gas generator.
5 more elements
An airbag apparatus comprising:
- an airbag and a gas generator having at least one gas-discharge opening,
- wherein at least the front of the gas generator is disposed in the airbag and the gas-discharge opening is disposed in the airbag,
- wherein the inner space of the airbag is partitioned into a central first compartment and a second compartment encircling the first compartment, and
- wherein the first compartment and the second compartment inflate almost simultaneously when the gas generator is activated.
1 more element
Dependencies are inferred from the claim text.