GAS GENERATOR

• Main Authors: UEDA SHINYA, KINJI MOTOHIRO, OSUGI TOMOSHI, TSURUTA MAKOTO, KURAKI HIROTSUYO, KOYAMA HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 29.11.2018
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To prevent delay of gas jetting in a gas generator having large gas generation amount.SOLUTION: A gas generator 1A includes an igniter 40, a cup-shaped member 50 and a fixation member 70. The cup-shaped member 50 is disposed so that a transfer charge chamber 55 accommodating a transfer charge 56 faces the igniter 40, and explodes or melts when operated. The fixation member 70 fixes a filter 60, and does not explode or melt even when operated. The cup-shaped member 50 includes a side wall portion 51 and a top wall portion 52, and the fixation member 70 includes a partition wall portion 73. An inner diameter Ra of the side wall portion 51 and a distance Ha between top wall portion 52 and the igniter 40 satisfy a condition of Ra/Ha≤1.00. The side wall portion 51 includes a first region R1 surrounded by the partition wall portion 73 and a second region R2 not surrounded by the partition wall portion 73. An end of the partition wall portion 73 is disposed on a top plate portion 21 side of the igniter 40. A gas generating agent 61 is disposed to face the top wall portion 52, the second region R2 and the partition wall portion 73.SELECTED DRAWING: Figure 1 【課題】ガス発生量が大きいガス発生器においてガス噴出の遅延を防止する。【解決手段】ガス発生器１Ａは、点火器４０とカップ状部材５０と固定部材７０とを備える。カップ状部材５０は、伝火薬５６が収容された伝火室５５が点火器４０に面するように配置され、作動時において破裂または溶融する。固定部材７０は、フィルタ６０を固定し、作動時においても破裂および溶融しない。カップ状部材５０は、側壁部５１と頂壁部５２とを含み、固定部材７０は、隔壁部７３を有する。側壁部５１の内径Ｒａおよび頂壁部５２と点火器４０との間の距離Ｈａは、Ｒａ／Ｈａ≦１．００の条件を満たす。側壁部５１は、隔壁部７３によって囲まれた第１領域Ｒ１と、隔壁部７３によって囲われていない第２領域Ｒ２とを有し、隔壁部７３の端部は、点火器４０よりも天板部２１側に配置される。ガス発生剤６１は、頂壁部５２、第２領域Ｒ２および隔壁部７３に面するように配置される。【選択図】図１