| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain plug device capable of providing excellent sanitation and cleanability, by easily removing refuse, even when the refuse sticks, by effectively restraining sticking of the refuse.SOLUTION: A drain plug device 1 comprises a support cylinder 4 for supporting an operation shaft 5 for vertically moving a plug cover 7, and the support cylinder 4 is fixed to a draining pipe 3. The pipe 3 comprises an inclined part inclining in the vertical direction, and the support cylinder 4 comprises a projection cylinder part 41 projecting upward from the inclined part, and comprises a sticking preventive part 9 having an upstream side part 41A positioned on the upstream side in the flow direction of drain water in the inclined part among the projection cylinder part 41, an upper surface part for connecting a part opposed to the upstream side part 41A among the pipe 3, a first side surface part of extending downward from the whole one edge area in the width direction of the upper surface part and a second side surface part of extending downward from the whole other edge area in the width direction of the upper surface part.</p> |
