Airbag apparatus for vehicle

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

• a housing including:
• a mounting plate accommodating an airbag cushion therein;
• and
• an outer cover covering an opening of the mounting plate;
• an inflator disposed in the mounting plate, the inflator including a plurality of vent holes positioned below the mounting plate;
• a connector that connects the mounting plate with the inflator;
• and
• a first emission gap positioned between the mounting plate and an inner plate,
• wherein the connector includes a guide member configured to guide movement of the inflator by being compressed or decompressed,
• wherein the inflator includes a main block comprising the inner plate disposed on an interior of the housing and an outer plate disposed on an exterior of the housing,
• wherein, upon activation of the inflator, gas exits out of the vent holes to inflate the airbag cushion, and
• wherein, in response to pressure inside the inflated airbag cushion exceeding a predetermined level, gas forced into the first emission gap pushes the inflator to compress the guide member to form a second emission gap, while the movement of the inflator is limited such that the vent holes do not reach a level of the mounting plate, the second emission gap being formed between the mounting plate and the outer plate, and connected to the first emission gap.