Low-profile stepping motor with two coils arranged flush with each other horizontally

摘要: A low-profile stepping motor has a stator assembly structured such that first and second coil units are disposed flush with each other horizontally sandwiched between upper lower yoke pieces comprising yokes which punched out integrally other, shaped symmetrically, have plurality of pole teeth along its semi-circular inner circumference. The fixedly put together via the coils hollow-cylindrical protrusions formed in inserted into through-holes bobbins from sides, respectively, their abutting end surfaces welded, bonded or otherwise fixed to whereby surely held pieces.