The invention provided a gas generator for an air bag having any of the following
members. A deflecting member is provided to suppress discharge of a combustion
product generated by a combustion of gas generating means, and is formed as a tube
portion to be capable of shielding a gas discharge port formed at least on a circumferential
wall of a housing from the inside of the housing. A coolant/filter means supporting
member can position a coolant/filter means, prevent a short pass of an operating
gas, and functions as a buffer member between the coolant/filter and the housing,
and/or prevent a heat from being transferred to a diffuser shell, and comprises
an annular portion arranged to face an end surface of the housing and a wall portion
contacting with an inner periphery of the coolant/filter means. Further, in order
to make it possible to securely support and fix the coolant means and prevent the
short pass of the operating gas, an outer peripheral edge of an end portion thereof
is adhered and/or supported to a bent portion or a step portion formed in an inner
surface of an upper end surface and/or an inner surface of a lower end portion
in the housing. The coolant/filter means is formed in a cylindrical shape obtained
by laminating a wire mesh. The housing for the gas generator securely fixes an
igniter included in an ignition means, is preferably used at a time of manufacturing
a gas generator having a restricted overall height, and has an opening portion
for inserting and fixing the igniter or an igniter supporting member. The opening
portion is provided with a connecting portion for fixing the inserted igniter or
igniter supporting member, and the connecting portion is provided in inner side
of the housing rather than the end surface having the opening portion.
