| 摘要 |
PROBLEM TO BE SOLVED: To provide a stepping motor which has an enlarged wound section of a winding of a bobbin. SOLUTION: In a bobbin used in this stepping motor which construct a magnetic circuit provided by alternately forming four stators consisting of comb- shaped steel plate opposing a columnar rotor, axially layering resin bobbins for winding coil around the outer periphery of the stator, and inserting both of them into a cylindrical case, the wound section of the winding of the bobbin is enlarged in the axial thrust direction to increase the wounding area of the effective winding for an increase in its occupied area. The bobbin is used for the stepping motor.
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