Pyrotechnical ignition system with integrated ignition circuit

US6591754B1 · kind B1 · utility

Assignees

• Daimlerchrysler AG · US
• TRW Airbag Systems GmbH & Co. KG · DE

Inventors

• Richard Baur · Brackenheim, DE
• Guenter Fendt · Schrobenhausen, DE
• Hermann Kueblbeck · Schrobenhausen, DE
• Horst Laucht · Bruckmühl, DE
• Alfons Woehrl · Schrobenhausen, DE

Key dates

• Filing date: Aug 24, 2000
• Grant date: Jul 15, 2003
• Expiry date: Aug 24, 2020

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K2203/175
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A pyrotechnical ignition system with integrated ignition circuit for an occupant restraint system for motor vehicles includes electrical components for triggering or communication functions integrated therein, a capacitor arrangement, having a flat non-conductive external surface is used as a substrate or carrier element on which the other components are directly arranged and carried. A conductor structure linking the components can be formed by insertable metal parts that are arranged in the housing and project into the holding chamber in which the capacitor arrangement and the circuit component are arranged, and make contact with contact zones on the upper side of the circuit or the capacitor arrangement. The conductor structure may be a printed-conductor structure that is precipitated on non-conductive external surfaces of the capacitor arrangement, and the lateral surfaces thereof, connect the upper and the lower sides of the ignition capacitor as well as the individual capacitor electrodes within the capacitor arrangement to form one or several capacitors, in particular the ignition capacitor. The ignition bridge layer is situated on the capacitor arrangement or on the circuit…