Abstract: A membrane horn switch structure of an airbag module does not include a back plate, which simplifies an inner configuration of a bag cover and ensures stable operation. The structure includes an outer support plate installed on a plurality of protrusions formed at an inner bottom of the bag cover, the outer support plate including a pair of films having edges which are sealed to form an inner space. A membrane horn switch unit includes a pair of inner support plates having an arc shape, which are installed in the outer support plate. The inner support plates are overlapped and spaced apart from each other. One end of each inner support plate is fixed to the outer support plates, and the other end of each inner support plate is free, so that the inner support plates are in contact with each other when the outer support plate is pressed.

Abstract: Disclosed is a membrane horn switch structure of an airbag module which does not use a back plate in order to simplify an inner configuration of a bag cover and ensures stable operation by changing configuration of the membrane horn switch.