Airbag apparatus for vehicle

An airbag apparatus for a vehicle, the airbag apparatus comprising:

• an airbag cushion provided with a vent hole for discharging an inflation gas therein to outside;
• a flap having an external circumferential surface partially coupled to the airbag cushion along a rim portion of the vent hole;
• a tether having a first end portion penetrating through the vent hole of the airbag cushion to be coupled to an internal side surface of the flap and be partially supported on an internal side surface of the airbag cushion to pull the flap when the airbag cushion is fully deployed, to close the vent hole and release a tensile force when the airbag cushion is loaded to deploy the flap outwardly of the airbag cushion by the inflation gas, to open the vent hole;
• and
• a tether guide fixed to the internal side surface of the airbag cushion and be prepared to slide the tether in a state that the tether passes therethrough to be supported,
• wherein a second end portion of the tether is fixed to a gas inlet of the airbag cushion,
• wherein the tether guide is provided on an internal side surface of a portion of the airbag cushion where a passenger's head H contacts,
• wherein the tether guide includes:
• a first guide panel formed in a rectangular shape and having an external circumferential surface provided on the internal side surface of the airbag cushion;
• and
• a second guide panel having an external circumferential surface provided on the first guide panel and an inlet hole and an outlet hole provided on an intermediate side thereof, and
• wherein the tether is allowed to pass through a space between the second guide panel and the first guide panel.