Airbag module with an adaptive ventilation device

摘要

An airbag module having a first nozzle (10) enclosing a first gas compartment (G1), and a first inflator. At least one adaptive ventilation device for the first gas compartment (G1) is provided with a ventilation opening (12) bordered by flexible material and at least one throttle device with a tear seam, which, in a first state, throttles the gas flow more strongly than in a second state. A second cover (44) surrounding a second gas compartment (G2) and a gas source for the second gas compartment (G2) are provided, wherein the tear seam (49) extends through the second gas compartment and, upon filling of the second gas compartment (G2) by the gas source, the seam ruptures and the adaptive ventilation device passes from the first, to the second state.

主权项

1. An airbag module comprising;
a first cover enclosing a first gas compartment, a first inflator for filling the first gas compartment, at least one adaptive ventilation device for the ventilation of the first gas compartment which features at least one ventilation opening bordered by flexible material and at least one throttle device having a tear seam, which, in a first state, throttles the gas flow through the ventilation opening more strongly than in a second state,
a second cover surrounding a second gas compartment and a gas source for filling the second gas compartment, wherein the tear seam extends through the second gas compartment, and upon filling of the second gas compartment by the gas source, the seam ruptures so that the adaptive ventilation device changes from a first, throttled state to a second, less throttled state,the tear seam throttles the ventilation opening in the first state of the adaptive ventilation device at least in that the tear seam connects a first section of a border of the ventilation opening directly to a second section of the border of the ventilation opening and pulls tight the border at least in first and second sections,wherein the gas source is a second inflator independent of the first inflator.