PROBLEM TO BE SOLVED: To provide a liquid discharge structure of a rotary drive unit that prevents liquid leaking to a drive unit side from entering a region where a drive source of the drive unit is disposed.SOLUTION: In a liquid discharging structure of a rotary driving part for discharging liquid entering from a driven part side to the outside of a driving part 100, to the driving part 100 for rotatingly driving a driven part using a liquid, the driving part 100 includes a connecting portion 80 for connecting to the driven part, an accommodating portion 101 in which the liquid penetrated from the driven part side reaches and accommodating the connecting part, and a region 110 which is connected to the internal space 109 of the housing portion 101 and in which a drive source for rotationally driving the driven portion is disposed. The connecting part 80 is rotated by a driving source. A liquid outlet 103 for communicating the inside and the outside of the driving part 100 is provided at a position between the housing part 101 or the housing part 101 and the region 110 where the drive source is arranged.SELECTED DRAWING: Figure 2
