| 摘要 |
PURPOSE:To eliminate the movement of an accelerator pedal when a throttle shaft is driven by a motor, by connecting the motor with a sun gear in planetary gears and the throttle shaft with a ring gear while the accelerator pedal with planet gears. CONSTITUTION:A return spring 16 is mounted to one end part of a throttle shaft 14, urging a throttle valve 12 so as to be closed. While the other end part of the throttle shaft 14 arranges a step motor 20 to be opposed, and its output shaft 22 fixes a sun gear 24 to the point end part. And a device provides a ring gear 26 with internal gear to be arranged outside the sun gear 24 while planet gears 28 to be arranged between these sun gear and ring gear. Further the planet gears 28 are rotatably mounted to rollers 30, and the rollers 30 are mounted to an accelerator lever 32. While the accelerator lever 32 is mounted to the above described output shaft 22 through a bearing 24. In this way, driving force of the step motor 20 is transmitted not to the accelerator lever 32 but to only the throttle valve 12. |
