Air bag module mounting structure

A steering wheel with an air bag device comprises a steering wheel main body, an air bag module having an air bag cover which can oscillate relative to said steering wheel main body and a horn switch mechanism to activate a horn when a pair of contacts disposed spaced away from each other is brought into contact with each other through oscillation of said air bag cover, wherein said horn switch mechanism is provided integrally with said air bag module and wherein said air bag module is constructed so as to be fixed to said steering wheel main body via a snap-lock mechanism on a bottom or an external side thereof.