Patent ID: 7948145

Claim:
A switched reluctance motor comprising: a stator having a plurality of stator teeth; and a rotor having a plurality of rotor teeth, wherein a pair of the rotor teeth among the plurality of the rotor teeth are magnetically attracted by a pair of the stator teeth among the plurality of the stator teeth and the rotor rotates when the pair of the stator teeth magnetically attracting the pair of the rotor teeth is successively switched, and wherein a plurality of concavities and convexities are alternately formed on at least one of (1) at a tip of every rotor tooth, and (2) at a tip of every stator tooth along a rotation direction of the rotor, and depths of the concavities are deepest on an edge side where the stator tooth and rotor tooth first approach when the rotor rotates and are more shallow toward a direction in which a facing area of the stator tooth and rotor tooth increases.