| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact and inexpensive stepping motor capable of easily reducing the step angle of a rotor, to provide a movement for watch, the movement being provided with the stepping motor, and to provide a watch provided with the movement for watch. ! SOLUTION: A stepping motor comprises: a rotor 50 in which a first magnetic pole part and a second magnetic pole part are alternately arranged in a circumferential direction; and a stator 30 having a stator yoke 31 in which an opening 35 is formed. The rotor 50 includes: a magnet 52 magnetized in axial direction; a first yoke 53 having a plurality of first claw parts 55 arranged apart in circumferential direction on the radially outer side; and a second yoke 56 having a second claw part 58 arranged between the plurality of first claw parts 55 on the radially outer side. The stator 30 includes: one coil 45; a magnetic saturation part 37; a holding torque generation part 40 for causing a holding torque to act; a first relief part 43a; |
