To provide a stepping motor, which enables the reduction of the component cost and the reduction in the thickness of a motor main part and, further, can avoid the reduction of a magnetic force caused by the heat of a magnet rotor and can shown good torque performance.
Bobbin 2 on which coils 1 are wound, a magnet rotor 12 which is fixed to a rotary shaft 11 extended along the center axis of the bobbins 2 and placed in the hollow parts 10 of the bobbins 2 rotatably, a comb-shaped yoke 4 which covers the bobbins 2 and applies the magnetic fields of the coils 1 to the magnet rotor 12. Terminal parts 3 which are connected to the end parts of the coils 1 and protrude from the bobbins 2 and a printed board 6 on which the bobbins 2 having the terminal parts 3 are mounted and, further, which are electrically connected to the terminal parts 3 are provided. A bearing part 13, which pivots the rotary shaft 11 of the magnet rotor 12 on its bottom end, is provided on the printed board 6.
TSURUMAKI KEIJI