| 摘要 |
PURPOSE:To obtain rotary motion, capable of passing a given point with predetermined speed and timing, by controlling the rotating speed of a motor. CONSTITUTION:When a rotary body 11 is rotated, a protuberance 12, which belongs to the rotating body 11, is rotated. When the protuberance 12 passes a given position, a switch 13, located at the given position, is pushed. A moving body 14 is provided with a mechanism, effecting up-and-down motion, and is moved up-and-down in accordance with the rotation of the protuberance 12. When the mechanism is to be moved so as to be synchronized with the rhythm of a music, for example, the timing of the up-and-down motion, converted by employing a cam or the like, is synchronized with the speed of the rhythm whereby a motion, having integrated feeling with the music, may be realized. |
