opening 142 of the inflator 140 arranged through the through rings 124 can be supplied to the airbag cushion provided at the cushion assembly 110 the way the components are joined together in this embodiment will be described the cushion rings 112 are suspended and fixed to the cushion support 120 so that the cushion assembly 110 may be supported by the cushion support 120 to secure its position then the cushion support 120 joined to the cushion assembly 110 is contained in the housing 130 and thereafter the inflator 140 is inserted into the through hole 132 so as to pass through both the through hole 132 and the through rings 124 thus fixing the cushion support 120 to the housing 130 resultantly the cushion assembly 110 is firmly arranged in the housing 130 hereinafter the advantages of the airbag module in this embodiment will be described as discussed above the airbag module 100 of this embodiment is not fastened by connection means such as bolts and nuts so no additional fastening means are required further if the airbag module is manufactured by connecting means such as bolts and nuts a local stress concentration is generated in the connected regions due to this it is difficult to manufacture an airbag module by using a material such as plastic having a relatively weak rigidity compared with metals but having a small weight in this embodiment however the connection of the airbag module is done by the inflator which is a component of the airbag module so there is no room for a local stress concentration resultantly a material such as plastic having a weak.