Daicel Chemical Industries, Ltd.

Daicel Corporation

Nec Corporation

Mitsubishi Cable Industries, Ltd.

Takashi Okuyama

Teppei Hanano

Nobuyuki Katsuda

Naoki Matsuda

Yasunori Iwai

Yoshihiro Nakashima

Mikio Yabuta

Nobuyuki Ohji

Atsushi Toyohara

Minoru Yoshida

Katsuhito Miyaji

Kazuo Imamura

Katsuaki Kondo

Hideki Okuno

Atsushi Hatomoto

Yasuhide Sudo

Toshiro Iwakiri

Tatsuhiro Kawamura

Yoshiyuki Imada

A gas generator includes, a housing with a gas discharge port, an igniter assembly and a gas generating agent in the housing; and a metallic cup of constant inner diameter covering the igniter to define a charging chamber. The igniter assembly includes a main body, including an ignition portion and an electro-conductive pin integrated with a metallic collar by a resin. The metallic collar has a fixing portion inserted into a hole in a bottom surface of the housing and a remaining portion projecting inward from the bottom surface of the housing, and a guide portion. An inner circumferential wall surface of the metallic cup and an outer circumferential wall surface of the fixing portion are press-fitted, and an annular gap is formed between the inner circumferential wall of the metallic cup member and an outer circumferential wall surface of the guide portion.

Gas generator and assembling method thereof

A gas generator includes, inside a housing, an ignition device chamber accommodating a transfer charge and an igniter in which an igniter main body is surrounded by an igniter collar. The ignition device chamber is formed such that an inner circumferential wall surface on an opening side of an ignition device chamber cup, which is charged with the transfer charge, is press-fitted to and in close contact with an outer circumferential wall surface of the igniter collar of the igniter. The ratio (Vh/Vh) of an average Vickers hardness (Vh) of the igniter collar, which is measured by a method described in Examples, and an average Vickers hardness (Vh) of the ignition device chamber cup, which is measured by a method described in Examples, is within a range of 0.25 to 0.65.

Gas generator

The present invention provides a gas generator, including:

The air bag gas generator comprises a housing having a gas discharge port, an ignition unit chamber in which ignition units are accommodated, and a combustion chamber in which a gas generating agent is accommodated, a cylindrical coolant/filter disposed between the combustion chamber and the gas discharge port, so that combustion gas passes through the coolant/filter prior to discharge through the gas discharge port, and the air bag gas generator meeting the following requirements (a), (b), and (c): (a) that the gas generating agent has an amount of heat generation of 10 to 30 kcal/mol; (b) that the mass (g) of the coolant/filter in relation to 1 mol of gas generated during combustion of the gas generating agent be 20 to 65 g/mol; and (c) that the coolant/filter has a thickness of not less than 4.0 mm.

Gas generator for air bag

The present invention provides a gas generator including a housing formed by a closure shell and a diffuser shell having a gas discharge port,

A gas generator has an inner cylindrical member disposed in a cylindrical housing, an annular first combustion chamber provided radially in the outside of the inner cylindrical member, and, in the combustion chamber, a ratio of its radial average distance to its axial average length is adjusted to be in the range of 0.2 to 2.0. The gas generator has a retainer which changes a flow of a gas ejected from a through-hole in the inner cylindrical member and has a cylindrical portion for collecting fluid and semifluid combustion products included in the gas.

Gas generator for air bag and air bag device

The present invention includes a sheet material, a first optical fiber, a second optical fiber optically coupled to the first optical fiber in portions thereof, and an optical fiber coupler constituted in the portions where the two optical fibers are coupled, and those of the first and second optical fibers, and the optical fiber coupler are integrally held in the sheet material.

Optical fiber holding structure

Growing community of inventors

Tatsuno, Japan

Takashi Okuyama