| 摘要 |
<p>Provided is a rotary shaft connection structure. The rotary shaft connection structure, according to one embodiment of the present invention, comprises a second rotary shaft, which is aligned on a concentric axis with a first rotary shaft and selectively connects to the first rotary shaft so as to rotate with the first rotary shaft. Provided is the rotary shaft connection structure comprising: a coupling portion for selectively coupling one end portion of the first rotary shaft to one end portion of the second rotary shaft, so that the one end portion of the first rotary shaft and the one end portion of the second rotary shaft, which is opposite the one end portion of the first rotary shaft, can rotate together; and a movable shaft, which is positioned on the second rotary shaft and is formed so as to be movable in the direction of the first rotary shaft.</p> |
