Abstract: A pedal mechanism for a sewing machine drive device, comprising: a support member fixedly mounted on a support plate extending horizontally between legs of a sewing machine table; a pedal mounting base mounted adjacent to the support plate, a foot-operated pedal being mounted on the pedal mounting base, the pedal transmitting an operation signal to a sewing machine controller when the pedal is pressed down; and an articulated linkage mechanism for connecting the support member and the pedal mounting base in such a manner that the linkage mechanism can be angulaly moved so as to move the pedal mounting base between an operating position and a non-operating position while maintaining the base in a horizontal condition, so that the pedal mounting base can be placed on the support plate.