Airbag unit, comprising pressure relief mechanism for reduction of gas in case of secondary impact

摘要

The airbag unit (20) is assembled of the folded bag (28) accommodated in a housing (22) and a gas generating module either integrated in the housing (22) or attached to the outer surface. The bottom (23) of the housing (22) is provided with an air outlet (23a), normally covered by the pressure relief mechanism (30), which is activated in the case of a secondary impact following the first contact of the vehicle with a hindrance usually occurring at the front bumper.