An airbag apparatus includes airbag having a vent hole formed therein, an inflator configured to emit gas for inflating the airbag, and a chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted from the
An airbag apparatus includes airbag having a vent hole formed therein, an inflator configured to emit gas for inflating the airbag, and a chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted from the inflator to an inside of the airbag, and having a wall part configured to guide the emitted gas to the discharge aperture, wherein an external surface of the wall part is configured to partially cover the vent hole upon collapse of the chamber toward the vent hole.
대표청구항▼
1. An airbag apparatus, comprising: an airbag having a vent hole formed therein;an inflator configured to emit gas for inflating the airbag; anda chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted f
1. An airbag apparatus, comprising: an airbag having a vent hole formed therein;an inflator configured to emit gas for inflating the airbag; anda chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted from the inflator to an inside of the airbag, and having a wall part configured to guide the emitted gas to the discharge aperture,wherein an external surface of the wall part is configured to partially cover the vent hole upon collapse of the chamber toward the vent hole, andwherein the chamber has a closed loop shape enclosing the inflator on a cross-section thereof at a position of the inflator. 2. The airbag apparatus as claimed in claim 1, wherein a length of coverage of the vent hole, as provided by the wall part, in a radial direction of the vent hole, is denoted as “a”, and a diameter of the vent hole is denoted as “b”, and wherein a ratio of “a” to “b” is greater than or equal to 40% and smaller than or equal to 73%. 3. The airbag apparatus as claimed in claim 1, wherein the chamber is made of cloth and configured to be inflated and deployed by the gas emitted from the inflator. 4. The airbag apparatus as claimed in claim 3, wherein the chamber is configured to collapse as the gas emitted from the inflator decreases after incipient gas emission from the inflator. 5. The airbag apparatus as claimed in claim 4, further comprising a wall situated on an opposite side of the inflator from the vent hole and configured to cause the chamber to collapse toward the vent hole. 6. The airbag apparatus as claimed in claim 4, wherein the external surface has a tip thereof configured to extend outwardly from the vent hole to an outside of the airbag due to a force of the emitted gas exiting through the vent hole upon the collapse of the chamber toward the vent hole. 7. An airbag apparatus, comprising: an airbag having a vent hole formed therein;an inflator configured to emit gas for inflating the airbag; anda chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted from the inflator to an inside of the airbag, and having a wall part configured to guide the emitted gas to the discharge aperture,wherein an external surface of the wall part is configured to partially cover the vent hole upon collapse of the chamber toward the vent hole, andwherein the external surface has a tip thereof configured to extend outwardly from the vent hole upon the collapse of the chamber toward the vent hole. 8. An airbag apparatus, comprising: an airbag having a vent hole formed therein;an inflator configured to emit gas for inflating the airbag; anda chamber configured to accommodate the inflator therein inside the airbag, the chamber having at least one discharge aperture for discharging gas emitted from the inflator to an inside of the airbag, and having a wall part configured to guide the emitted gas to the discharge aperture,wherein an external surface of the wall part is configured to partially cover the vent hole upon collapse of the chamber toward the vent hole, andwherein an area size of coverage of the vent hole as provided by the wall part is denoted as “w”, and an area size of the vent hole is denoted as “W”, and wherein a ratio of “w” to “W” is larger than or equal to 37% and smaller than or equal to 79%.
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