| 摘要 |
A power transmission device which is free from a possibility of breakage of a driving member is provided. A stepping otor (driving member) 61a configured to be driven on the basis of a command signal from a controller 70, a lead screw portion 61c configured to be rotationally driven in association with the drive of the stepping motor 61a, and a power transmitting member 66 configured to move along an axial direction X of the load screw portion 61c in accordance with the rotation of the lead screw portion 61c and transmit a power to a power transmitted, member 42e are provided, and the controller 70 is configured to control the output of the command signal to the stepping motor 61a to be stopped when the power transmitting member 65 is not moved the axial direction X. |
