OSCILLATION TYPE STEP MOTOR

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to secure the durability when a rotor is driven with a driving pulse of large energy or driven for a long time in a step motor using a mechanism for converting the oscillation of the rotor used for continuous stitch or the like into rotation in a constant direction, and an operation that has a low stitching irregularity and a stable and low power consumption is difficult.SOLUTION: The rotor includes a cam for feeding a drive vehicle, and a projection formed on the opposite side to the cam with respect to the oscillation center, without requiring a separate member for regulating the oscillation angle of the rotor. The projection regulates the oscillation angle of the rotor by colliding with the tooth bottom surface of another drive vehicle different from a drive vehicle on the fed side by the cam or a surface near the tooth root thereof.