| 摘要 |
The present invention relates to a gear device. A main objective of the present invention is to provide a gear device capable of selectively operating a plurality of gears using a single driving source. To achieve the objective, the gear device comprises: a base to receive a rotational power from a driving source; a centrifugal gear installed and fixed on the base to rotate with the base to expand in a radial direction by a centrifugal force and determine a position of a first swing gear and a second swing gear according to a state of expansion; a first gear and a second gear installed on an output gear to output a rotational power received from the output gear; the first swing gear engaged with the first gear to transfer the rotational power of the base to the first gear and detach from the first gear at a position determined by the centrifugal gear in an expanded state; and the second swing gear to gear with the second gear at the position determined by the centrifugal gear in the expanded state to transfer the rotational power of the base to the second gear. |
