DRAIN CAP

To provide a drain cap adjustable to the aperture of an exhaust port of a range wider than before and capable of exhibiting high fixing performance irrespective of the aperture of the exhaust port.SOLUTION: A drain cap 12 comprises: a gap body 10 of a water-conduction structure covering an exhaust port 3; and a leaf spring member 11 extended downward from the cap body 10, squeezed and inserted into the exhaust port 3, and then expanded by its own resilient force to be pressed around the inner part of the exhaust port 3. The intersection part of two leaf spring members 11 stacked to intersect with each other in a cross is fitted to the top center lower surface of the cap body 10 via a holding part 13, and the upper part of each leaf spring member 11 is bent downward to be stored in the cap body 10. The middle part of each leaf spring member 11 is bent outward near the lower end of the cap body 10, and disposed so as to extend the lower part of each leaf spring member 11 outward below the cap body 10.SELECTED DRAWING: Figure 3 【課題】従来よりも広い範囲の排水口の口径に対応させることが可能で且つ排水口の口径に関わらず良好な固定性能を発揮させることが可能なドレンキャップを提供する。【解決手段】排水口３を覆う通水構造のキャップ本体１０と、該キャップ本体１０から下方に張り出し且つ排水口３の内部に窄めて挿入されてから自身の弾発力により広がって排水口３の内部周囲に圧接する板ばね部材１１とを備えたドレンキャップ１２に関し、十文字に交差するよう重ね合わせた二枚の板ばね部材１１の交差部分をキャップ本体１０の頂部中央下面に保持部１３を介して装着し且つ各板ばね部材１１の上側部分を下方に撓ませてキャップ本体１０内に収め、各板ばね部材１１の中途部をキャップ本体１０の下端付近で外側に向け屈曲させて各板ばね部材１１の下側部分がキャップ本体１０より下方で外側に張り出すように配置する。【選択図】図３