Hybrid gas generator provided with an initiator with shaped explosive charge

Abstract

The invention relates to a hybrid gas generator intended for motor vehicle safety. The generator (1) includes a container (2) containing a cold gas (10) under pressure and having an open end in which a compartment (2), which is located outside the container (2), is fixed. This compartment (3) is provided with gas discharge orifices (6) and has a front wall (8) in which there is an opening closed by a diaphragm (9) which makes it possible to separate the inside of the container (2) from the inside of the compartment (3), in a leaktight fashion. The latter contains an initiator (12) with shaped explosive charge and a pyrotechnic charge (13), the initiator (12) being capable of destroying the diaphragm (9) from a distance and of initiating the pyrotechnic charge (13). This generator (1) makes it possible to initiate deployment of the airbag using cold gas (10) as soon as it starts to operate.

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