| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drain valve device capable of preventing defective water cut off thereof not only by inhibiting the stroke difference accompanied with the lift of the drain valve in each case of feces flushing and urine flushing but also by inhibiting the difference in the drain valve seating in-plane position in each water cut off operation by decreasing the rotation around the central axis of the drain valve when the drain valve moves up and down. <P>SOLUTION: A drain valve device 28 of the present invention comprises a first ball chain 48 and a second ball chain 50 for connecting between a ball chain lift member 46 of the revolving shaft 44 of an operation lever 42 and a drain valve unit 58. The valve body 84 of the drain valve unit is lifted by the rotational operation of the operation lever via the first ball chain and the second ball chain to perform a feces flushing and a urine flushing respectively. A first ball chain attaching portion 46a and a second ball chain attaching portion 46b of the ball chain lift member are disposed on the opposite sides of the central axis 44a of the revolving shaft of the operation lever, respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
