Gas generator ignition unit for a passive restraint system
AssigneeTEMIC Bayern-Chemie Airbag GmbH
InventorsOtto Fink, Bernhard Vetter
Life of this patent
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Abstract
Gas generators for passive restraint systems in motor vehicles, particularly for airbag systems or belt pre-tensioner systems, contain a gas generating compound which is ignited by an electrical ignition unit. The present ignition unit makes do with a small number of individual components and does not employ a plug. The connecting devices carrying the electrical ignition pulse are connected directly to the ignition charge without the intermediate circuitry of a plug, and the ignition carrier is formed as an enclosure for the connecting devices.
Claims13
An ignition unit for a gas generator for a passive restraint system for motor vehicles, comprising a propellant charge sleeve containing propellant charge powder, and an electrical igniter, wherein the electrical igniter comprises an ignition charge, a bridge wire carrier which holds the ignition charge and which projects into the propellant charge sleeve containing the propellant charge powder, an ignition carrier which obturates the propellant charge sleeve, and connecting leads extending through the ignition carrier, wherein the connecting leads are permanently connected to the bridge wire carrier, and wherein the ignition carrier is configured as an enclosing holder for the connecting leads and the bridge wire carrier in such a way that the bridge wire carrier projects from the ignition carrier on a side of the ignition carrier facing the propellant charge sleeve, and the connecting leads extend out of the ignition carrier on a side of the ignition carrier facing away from the propellant charge sleeve.
The ignition unit in accordance with one of the foregoing claims, further comprising ferrite cores arranged in the ignition carrier in the vicinity of the connecting leads.
Dependencies are inferred from the claim text.