| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive motor driving device which can reduce abnormal sound occurred at the time of switching the forward/reverse rotational direction of a motor, without providing particular members. SOLUTION: The motor driving device is equipped with a brushless motor with a planetary type rotor 2, a worm gear 31 fitted to the rotary shaft 1 of the brushless motor, and a worm wheel 33 engaged with the worm gear 31. A protruding (or recessed) connector 3b is integrally formed in the vicinity of the rotary shaft of a rotor case 3 formed of a plate material, and the worm gear 31 is movably fitted in the axial direction of the rotary shaft 1 while being engaged with the connection part 3b. COPYRIGHT: (C)2007,JPO&INPIT
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