Gas generator

• US 6,823,796 B1
• Filed: 04/12/2002
• Issued: 11/30/2004
• Est. Priority Date: 10/14/1999
• Status: Expired due to Term

• Current Assignee: Nippon Kayaku Company Limited
• Original Assignee: Nippon Kayaku Company Limited
• Inventors: Amano, Junya
• Primary Examiner(s): Jordan, Charles T.
• Assistant Examiner(s): NGUYEN, TRINH T
• Application Number:
  US10/089,095
• Time in Patent Office: 963 Days
• Field of Search: 102/530, 102/202.5, 102/202.9, 102/202.14, 280/736, 280/741
• US Class Current: 102/202.14
• CPC Class Codes: B60R 2021/26029 Ignitors
• CPC Class Codes: B60R 22/4628 characterised by fluid actuators, e.g. pyrotechnic gas generators actuating a cable B60R22/4619
• CPC Class Codes: F42B 3/103 Mounting initiator heads in initiators; Sealing-plugs
• CPC Class Codes: F42B 3/127 the case having burst direction defining elements

Abstract

A gas generator G of the present invention has a construction in which a holder (3, 73) is fitted into a cup body (1, 71) and a tube body (2) or a container body (72) and encloses gas generants P and ignition agents (6, 76).

The holder (3, 73) is formed of resin. A metallic reinforcement 4 is integrated with the resin holder (3) by insert molding.

Or, a ring body (74) for sealing the cup body (71) and the holder (73) is mounted on the holder (73).

Claims

1. A gas generator comprising:

a cup body loaded with gas generants generating gas by combustion,

a tube body arranged inside of the cup body to contain firing agents ignited by electric current,

a holder made of resin and fitted in both the cup body and the tube body for enclosing the gas generants and the firing agents, and

a reinforcement integrated with the resin of the holder by insert molding,

wherein the reinforcement has a portion protruding from an outer periphery of the holder, the protruding portion is fitted into the cup body, and

inter-gaps among the cup body, the tube body and the holder are tightly closed by a caulking force between the protruding portion and the cup body.

2. The gas generator according to claim 1, wherein the tube body has a flange protruding towards the cup body, the flange is sandwiched in between the cup body and the protruding portion of the reinforcement.

3. A gas generator comprising:

a cup body loaded with gas generants generating gas by combustion,

a tube body arranged inside of the cup body to contain firing agents ignited by electric current,

a holder made of resin and fitted in both the cup body and the tube body for enclosing the gas generants and the firing agents, and

a reinforcement integrated with the resin of the holder by insert molding,

wherein the reinforcement comprises a cylindrical body and a ring plate body so as to form a cup shape,

the cylindrical body protrudes from an outer periphery of the holder, and

the ring plate body is integrated with the resin of the holder.