Patent ID: 7165577

Claim:
A cleaning valve drive unit in a cleaning water supply apparatus which supplies water to a toilet, comprising: a main shaft operated by a manual rotational operation, the main shaft being movable to a cleaning operation position and a draining operation position, wherein the draining operation position of the main shaft is axially shifted from the cleaning operation position in an axial direction of the main shaft; and an operation limiting mechanism for limiting the rotational operation of the main shaft, wherein the operation limiting mechanism includes a projection protecting from the main shaft and a limiting portion which limits rotation of the main shaft by engaging with the projection when the main shaft is in the cleaning operation position; wherein when the main shaft is disposed at the cleaning operation position: (i) the operation limiting mechanism enables the main shaft to rotate by the rotational operation around an axis line of the main shaft to thereby clean the toilet: and (ii) the projection is disposed so as to engage the limiting portion so that a draining operation of the main shaft is not able to be carried out, and when the main shaft is disposed at the draining operation position, the projection formed on the main shaft is released from engagement with the limiting portion so that the operation limiting mechanism enables the main shaft to rotate by the rotational operation around the axis line of the main shaft to thereby drain water from the toilet.