Patent ID: 8276521
Filing Date: 2012-10-02
Classification: B60R

Abstract:
1. A gas generator for an airbag module, comprising: a gas generator housing having a first chamber and a second chamber; a propellant arranged in the first chamber; a main gas generating material arranged in the second chamber, the propellant in the first chamber configured to ignite the main gas generating material in the second chamber; and an ignition device for ignition of the propellant, wherein the first chamber for receiving the propellant is restricted by a pipe, on a first end of which the ignition device is arranged, wherein a second end of the pipe reaches the gas generator housing such that, before the ignition of the propellant, the second end of the pipe rests directly against the gas generator housing or that, before the ignition of the propellant, between the second end of the pipe and the gas generator housing a gap is present caused by production tolerances so small that no products of the propellant can reach the second chamber via the second end of the pipe, and wherein the second end of the pipe reaches the gas generator housing such that the gas generator housing is deformable by pressure generated after the ignition of the propellant in the pipe and the pipe is arranged in such a way that an intermediate space is generated between the second end of the pipe and the gas generator housing so that hot gases generated by the ignition of the propellant can flow through the intermediate space between the second end of the pipe and the gas generator housing from the first chamber into the second chamber containing the main gas generating material.