| 摘要 |
Provided is a step motor including a rotor in which a lead screw is coupled with a magnet; a stator in which the rotor is rotatably inserted and which applies a magnetic field to the rotor; a thrust bearing which supports an end of the lead screw; a housing in which the stator is received, and a guide part opened at one side thereof is protruded, and the thrust bearing is inserted into the guide part; a plate spring which is provided at an opened portion of the guide part so as to apply elastic force to the thrust bearing and thus inhibit deviation of the lead screw and the thrust bearing; and a plate spring guide which is fixed to an outside of the guide part of the housing so that the plate spring is inserted therein.
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