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    • 10. 发明专利
    • DRIVE UNIT
    • JP2013253904A
    • 2013-12-19
    • JP2012130634
    • 2012-06-08
    • RHYTHM WATCH CO
    • HASEBE MASAOKOMATA FUJIROKABE HIROSHIFUKUOKA SHIGERU
    • G04B25/06A63H13/02A63H29/00F16H1/28F16H21/26F16H21/28
    • PROBLEM TO BE SOLVED: To provide a drive unit that drives a decorative body more rationally.SOLUTION: A drive unit 100 is formed by using a planetary gear mechanism. When a lever body 101 provided with a decorative body is placed at one stop position, the lever body 101 engages with a revolution transmission shaft 109 side, and when the lever body 101 is placed at the other stop position, the lever body 101 engages with a cylindrical body 108 side. Once a drive shaft rotates positively, the cylindrical body 108 rotates positively and a link mechanism of the decorative body is operated at a timing when the lever body 101 is moved to the other stop position. Once the drive shaft rotates negatively, the cylindrical body 108 rotates negatively and an engagement between the lever body 101 and the revolution transmission shaft 109 is released to move the lever body 101 to one stop position at a timing when negative rotation of the revolution transmission shaft 109 is stopped by negative rotation stopping means. Control means counts a rotation speed in a positive direction of the revolution transmission shaft 109 by using a limit switch 113 operated by a rotation speed detection cam, and once a predetermined rotation speed is reached, a motor 103 is negatively rotated.