Patent ID: 8033356

Claim:
An external airbag system of a vehicle comprising: an airbag housing disposed behind a bumper of the vehicle and connected to a stationary member of the vehicle; an airbag cushion that is disposed inside the airbag housing; a sliding device that moves the airbag housing in a forward direction of the vehicle; and an airbag controller that activates an inflator of the airbag cushion and the sliding device according to information of sensing device, wherein the airbag housing is allowed to slide in the forward direction by the sliding device; wherein the sliding device comprises: a slide rail attached to a side of the airbag housing; a guide rail fixed to an upper bracket attached to the stationary member and slidably receiving the slide rail therein to guide the airbag housing in the forward direction of the vehicle; and a pretensioner fixed to the upper bracket and activating the airbag housing by a connecting member, wherein the connecting member engages the pretensioner with the airbag housing.