Multi-flap vents for inflatable chambers
First Claim
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1. An airbag comprising:
- an airbag cushion defining an inflatable chamber that is configured to receive inflation gas from an inflator; and
a passive vent that is configured to, during a deployment event, transition from a closed state to an open state to vent air through a panel of the airbag cushion, the vent comprising;
a first flap comprising a secured bottom end and a free top end; and
a second flap comprising a secured top end and a free bottom end,wherein the first flap and the second flap impede fluid flow through the vent when the vent is in the closed state, andwherein the free ends of the first flap and the second flap are positioned at an exterior of the inflatable chamber and allow fluid flow through the vent when the vent is in the open state.
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Abstract
A vent for an inflatable chamber, such as an airbag cushion, can include a first flap and a second flap. The first flap and second flap can be opposing and/or overlapping. The first flap and the second flap impede fluid flow through the vent when the vent is in a closed state. Free ends of the first flap and the second flap can be positioned at an exterior of the inflatable chamber when the vent is in the open state.
184 Citations
20 Claims
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1. An airbag comprising:
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an airbag cushion defining an inflatable chamber that is configured to receive inflation gas from an inflator; and a passive vent that is configured to, during a deployment event, transition from a closed state to an open state to vent air through a panel of the airbag cushion, the vent comprising; a first flap comprising a secured bottom end and a free top end; and a second flap comprising a secured top end and a free bottom end, wherein the first flap and the second flap impede fluid flow through the vent when the vent is in the closed state, and wherein the free ends of the first flap and the second flap are positioned at an exterior of the inflatable chamber and allow fluid flow through the vent when the vent is in the open state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An airbag comprising:
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an airbag cushion formed of one or more panels defining an inflatable chamber that is configured to receive inflation gas from an inflator; and a vent disposed through a panel of the one or more panels of the airbag cushion to, during a deployment event, transition from a closed state to an open state to vent air through from the inflatable chamber, the vent comprising; a first flap comprising a secured end and a free end; and a second flap comprising a secured end and a free end, the second flap oriented opposite the first flap, wherein the first flap and the second flap at least partially overlap to impede fluid flow through the vent when the vent is in the closed state, wherein, when pressurization within the inflatable chamber exceeds a threshold, the free ends of the first flap and the second flap are forced outward to extend transverse to the panel of the airbag cushion to transition the vent to the open state; wherein the first flap is formed from a first slit in a first piece of material and the second flap is formed from a second slit in a second piece of material, and wherein at least a portion of the first slit overlaps with at least a portion of the second slit when the vent is in the closed state. - View Dependent Claims (18, 19, 20)
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Specification