PROBLEM TO BE SOLVED: To make a lever removably attachable for replacement according to the attitude and the position of a bather in his/her bathing state.SOLUTION: An arm unit 11 is provided inside a bathtub in such a manner as to be capable of rocking. A lever 21 that a bather can grip is removably supported against the arm unit 11. The arm unit 11 is provided with a fitting hole 22 and a recessed portion 26 that protrudes from the fitting hole. The lever 21 is provided with an engaging shaft portion 24 that fits into the fitting hole 22. The engaging shaft portion 24 includes a body 28 and an engaging shaft 29. The engaging shaft portion 24 has a shaft cylinder 38 and a central shaft 35 that are coaxial with each other. The central shaft 35 is fitted into the shaft cylinder 38 in such a manner as to be capable of moving back and forth and rotating, and has a locking pin 40 provided at its tip. The shaft cylinder 38 has a cruciform groove 39 formed on an end face thereof, and is provided with grooved portions 39a, 39b crossing each other to engage the locking pin 40 in a position where the locking pin locks in the fitting hole 22 and a position where the locking pin can be removed from the fitting hole 22. A pressure plate 34 and an operating unit 34a are provided at the base end of the central shaft 35 passing through the body 28, and a coil spring 37 is mounted between the pressure plate 34 and the bottom of a second recessed portion 32.COPYRIGHT: (C)2012,JPO&INPIT【課題】入浴者の入浴状態の姿勢や位置に応じてレバーを着脱交換できる。【解決手段】浴槽内にアーム部11を揺動可能に設ける。アーム部11に入浴者が把持可能なレバー21を着脱可能に支持する。アーム部11に嵌合穴22と嵌合穴から突出する凹部26を設ける。レバー21に嵌合穴22に嵌合する係合軸部24を備えた。係合軸部24は本体28と係合軸29を備える。係合軸部24は軸筒38と中央軸35を同軸に有する。中央軸35は軸筒38内を進退可能で回転可能に嵌挿され、先端に係止ピン40を設けた。軸筒38は先端面に十字溝39を形成し、係止ピン40を嵌合穴22に係止する位置と嵌合穴22から離脱可能な位置とに係合する溝部39a、39bを交差させて設けた。本体28を貫通する中央軸35の基端に押圧板34と操作部34aを設け、押圧板34と第二凹部32の底部との間にコイルばね37を装着した。【選択図】図5
