Airbag apparatus for vehicle

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

• a first inflator and a second inflator each configured to provide an inflation gas;
• a main cushion connected to the first inflator and configured to deploy in a predetermined direction when the first inflator is operated;
• a sub cushion connected to the second inflator and configured to deploy along a first side surface of the main cushion and bent at a front portion to be deployed along a front surface of the main cushion to be overlappingly deployed with the main cushion at the first side surface and the front surface of the main cushion when the second inflator operates;
• and
• a controller configured to operate the first inflator to deploy the main cushion when a vehicle collision is detected, and configured to operate both of the first inflator and the second inflator to deploy both of the main cushion and the sub cushion when the vehicle collision is detected as an oblique collision at an angle equal to or greater than a predetermined angle,
• wherein the controller is configured to operate both of the first inflator and the second inflator when a vehicle speed is equal to or greater than a predetermined speed, when detecting a front collision of less than the predetermined angle.