To reduce the number of parts of a pedal operation, to substantially reduce assembly man-hour and to lower a cost by mounting first and second torsion springs for pressing elastic force to a rod connected through the rod to a foot pedal.

When a pedal is stepped on forward and the rod 9 is pulled downwards through a connecting rod, A fixed collar 12 rolls in the first torsion spring 15 through a moving pin 13 against the pressing force and generates a first pedal pressure. At the time, a pedal stepping direction and a manipulated variable are judged in the CPU of a sewing machine motor control part for inputting a current from a semiconductor position detection element 29 and the sewing speed of a sewing machine motor is adjusted. When the forward stepping of the pedal is continued further, a case body 6 is brought into contact and stoppage is performed by the limit of the moving space of the fixed collar 12. On the other hand, when the pedal is stepped backwards, a presser bar litter operation is performed, and after it is ended, the moving pin 25 on the rod side of the fixed collar 12 bends the arm part of the second torsion spring 15 and an increased pedal pressure is made generatable.