GAS PRODUCER FOR AIR BAG

• US 20010002085A1
• Filed: 06/17/1999
• Published: 05/31/2001
• Est. Priority Date: 09/22/1995
• Status: Active Grant

• Current Assignee: Daicel Chemical Industries Limited (Daicel Corporation)
• Original Assignee: Daicel Chemical Industries Limited (Daicel Corporation)
• Inventors: OGAWA, AKIHISA, TOKUDA, MASAKAZU
• Granted Patent: US 6,273,464 B2
• Time in Patent Office: Days
• US Class Current: 280/741
• CPC Class Codes: B60R 2021/26064 characterised by auto-ignition means
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder

Abstract

A gas generator for an airbag is provided which has a reduced number of components and in which an automatic ignition material can ignite at an appropriate time. This gas generator includes a housing, an ignition means accommodating chamber in the housing, an ignition means installed in the ignition means accommodating chamber, a gas generating means, and a cooling and purifying means; wherein the ignition means includes a transfer charge container and an igniter, the transfer charge container having a cup containing a transfer charge and a cover hermetically sealing the cup, the igniter being activated by a signal to ignite the transfer charge; wherein a gas generated is introduced into an airbag to protect an occupant against an impact; wherein the transfer charge container comprises a cup part and a cover part, either of the bottoms of the cup part and the cover part being outwardly curved to form an outwardly convex surface, the container being resiliently held between a top wall portion of the ignition means accommodating chamber and the igniter.

Claims

1. A gas generator for an airbag comprising:

a housing having gas discharge ports;

an ignition means accommodating chamber formed in a central part of the housing;

an ignition means installed in the ignition means accommodating chamber;

a gas generating means to be ignited by the ignition means and generate a gas; and

a cooling and cleaning means for cooling and cleaning the gas generated by the gas generating means;

wherein the ignition means includes a transfer charge container and an igniter, the transfer charge container having a cup for accommodating the transfer charge and a cover for hermetically closing the cup, the igniter to be activated by a signal and ignite the transfer charge;

wherein the gas generated by the gas generating means in response to an impact is introduced into an airbag to protect an occupant against the impact;

wherein the transfer charge container comprises a cup part and a cover part, either of the bottoms of the cup part and the cover part being outwardly curved to form an outwardly convex surface, the container being resiliently held between a top wall portion of the ignition means accommodating chamber and the igniter.