Gas producer

• US 20060208474A1
• Filed: 12/24/2003
• Published: 09/21/2006
• Est. Priority Date: 12/24/2003
• Status: Abandoned Application

• Current Assignee: Nippon Kayaku Company Limited
• Original Assignee: Nippon Kayaku Company Limited
• Inventors: Kubo, Dairi, Kurita, Kazumasa
• Application Number:
  US10/540,262
• Publication Number:
  US 20060208474A1
• Time in Patent Office: Days
• US Class Current: 280/806
• CPC Class Codes: B60R 2021/26029 Ignitors
• 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: F15B 15/19 Pyrotechnical actuators

Abstract

A gas generator comprising a cup member 3 loading therein with gas generant 2 to generate gas by burning, at least two electrode pins 4 to permit passage of electricity, an ignition portion 20 having an ignition mechanism to ignite by an application of electric current, and a holder 5 to fix the electrode pins 4 and the ignition portion 20 in place and engage with the cup member 3 to seal off the gas generant 2, wherein holes 23 for the electrode pins 4 to be extended through are formed in the holder 5 and plastic members 6 are arranged around a part of a radial periphery of the respective electrode pins 4, and wherein a part of or a whole of the plastic members 6 are inserted in the holes 23 and the holder 5 is plastically deformed at a portion thereof at which the plastic members 6 are inserted, whereby the electrode pins 4 and the plastic members 6 are fixed.

Claims

1. A gas generator comprising a cup member (3) loading therein with gas generant (2) to generate gas by burning, at least two electrode pins (4) to permit passage of electricity, an ignition portion (20) having an ignition mechanism to ignite by an application of electric current, and a holder (5) to fix the electrode pins (4) and the ignition portion (20) in place and engage with the cup member (3) to seal off the gas generant (2),

wherein holes (23) for the electrode pins (4) to be extended through are formed in the holder (5) and plastic members (6) are arranged around at least a part of a radial periphery of the respective electrode pins (4), and wherein a part of or a whole of the plastic members (6) are inserted in the holes (23) and the holder (5) is plastically deformed at a portion thereof at which the plastic members (6) are inserted, whereby the electrode pins (4) and the plastic members (6) are fixed.

2. The gas generator according to claim 1, wherein the electrode pins (4) are deformed at the other end portions thereof (21) on the side projecting toward the cup member (3) so as to make the electrode pins (4) to be pulled off hard toward one end portions thereof (24) on the side of a connecter of the holder (5).

3. The gas generator according to claim 1, wherein the ignition portion (20) comprises at least electric conductors (12) for permitting passage of electricity, a joining portion (13) for joining together the electric conductors (12), a heating element (7) for converting an electric signal to heat, and a primary charge (8) formed around the heating element (7) and is fixed to the other end portions (21) of the electrode pins (4).

4. The gas generator according to claim 3, comprising;

a secondary charge (9) which is ignited by flames of the ignition portion (20) ignited and in turn causes the gas generant (2) to be ignited, and a secondary charge holder (10) containing the secondary charge (9), wherein the position of the ignition portion (20) is fixed by a fit of the joining portion (13) with the secondary charge holder (10).

5. The gas generator according to claim 1, comprising;

a combustion chamber (22) formed in the secondary charge holder (10) arranged eccentrically with respect to a central axis of the gas generator (2).

6. The gas generator according to claim 1, comprising;

a rigid cap (14) integrally molded with the secondary charge holder (10).