| 摘要 |
PROBLEM TO BE SOLVED: To normally transmit the drive force of a drive device to a wind direction changing plate by a method wherein an annular recessed groove is formed in the upper part of an output gear and a regulation piece slidably contained in the recessed groove and regulating shaft oscillation of the drive shaft of a motor to drive the output gear is arranged at a motor cover. SOLUTION: An annular recessed groove 11a is formed in the upper part of an output gear 11 and meanwhile, and a regulation piece 9b slidably contained in the recessed groove 11a and regulating shaft oscillation of a drive shaft 10a of a motor 10 to drive the output gear 11 is arranged in a motor cover 9. The drive shaft 10a of the output gear 11 is regulatable to prevent the occurrence of shaft oscillation. The output gear 11 is prevented from waving, and the drive force of the motor 10 is prevented from instability of operation to rotate a wind direction change plate resulting from non-normal transmission of the drive force of the motor 10. By forming the regulation piece 9b in a reverse protrusion in an annular shape corresponding to that of the recessed groove 11a, the drive shaft 10a of the output gear 11 is effectively regulated in a manner to prevent the occurrence of shaft oscillation. |
