To provide a torque motor which has flat torque property.

For the teeth parts42 and 43 of a stator core 40, ramps 45 and 44 are made at the stator core 40 so that the length may be gradually increasing in axial direction of the rotor from the front brims 421 and 431 to the rear brims 422 and 432 to the rotational direction of the rotor. By changing the length of the teeth parts 42 and 43 this way, the area of a torque generation part increases with the rotation of the rotor 30, so the density of the magnetic flux of the stator core 40 in the latter half of the rotation of the rotor 30 drops, and it becomes hard for magnetism to be saturated, and the generated torque increases. On the other hand, for the first half of the rotation of the rotor 30, the generated torque decreases because the area of the torque generation part of the teeth parts 42 and 43 is small. Accordingly, since the torque in the former half of the rotation decreases and the torque in the latter half of the rotation increases, a motor having flat torque property can be obtained.