To provide a bathtub where an aged person or a physically handicapped person or the like can easily get in/out.SOLUTION: A notched part 6 is formed in a sidewall 3 of a bathtub 1 and the notched part 6 is encapsulated and sealed by an opening/closing unit U concerning a bathtub. The opening/closing unit U is constituted by a reverse trapezoidal plate-like member 11 and a fixing member 21 to which the plate-like member 11 is fitted. Clamped plates 24a, 24b and clamped plates 25a, 25b are attached to both ends and both surfaces of the fixing member 21. The clamped plates 24a, 24b and the clamped plates 25a, 25b are clamped and fixed to the side wall 3 positioned in the periphery of the notched part 6, and then the notched part 6 is encapsulated and sealed concerning the bathtub.SELECTED DRAWING: Figure 3【課題】 高齢者や身障者などの方々が楽に出入りできる浴槽を提供する。【解決手段】浴槽１の側壁３に切欠部６を設け、この切欠部６が開閉ユニットＵで密封封止される浴槽で、開閉ユニットＵは逆台形状の板状部材１１とこの板状部材１１が嵌め込まれる固定部材２１とで構成される。前記固定部材２１にはその両端に且つ両面に挟持板２４ａ、２４ｂおよび挟持板２５ａ、２５ｂが取り付けられており、前記挟持板２４ａ、２４ｂおよび挟持板２５ａ、２５ｂで切欠部６の周囲に位置する側壁３に挟持、固定し、切欠部６を密封封止した浴槽である。【選択図】図３
