| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving device which is improved in performance by securing the dustproofness of magnet rotating space and can ensure the winding of a coil. SOLUTION: A stepping motor includes a first magnet 1, a second magnet 8, a first coil 2, a second coil 9, a first bobbin 3, a second bobbin 10, a first stator 4, a second stator 11, a first bearing 5, a second bearing 12, a case 6 and a rotor 7. The first bobbin 3 has cover sections 3a to 3h covering the portion exposing the first magnet 1 from between the magnet pole teeth of the first stator 4. The second bobbin 10 has covering sections 10a to 10h covering the portion exposing the second magnet 8 from between the magnet pole teeth of the second stator 11. Therefore, the rotary space of the first and second magnets 1, 8 is covered with each stator, each bobbin, each coil, the case 6, the rotor 7 and each bearing without any gap. COPYRIGHT: (C)2007,JPO&INPIT
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