PROBLEM TO BE SOLVED: To provide a structure for the suction part of a jet bath capable of preventing the suction part from being broken even when remaining water within the suction part is frozen.;SOLUTION: The structure has an approximately T-shaped branched water channel 4 branched at a suction port 2 opened within a bathtub 1 and reaching two connection ports 3. The water channel 9 of a jet bath unit is connected to one connection port 3a, and a water cut-off lid 6 is mounted to close another connection port 3b. An opening/closing valve 5 for opening/closing the one connection port 3a and the suction port 2 is disposed at the branching point of the branched water channel 4. A pressure release mechanism 7 is provided for releasing a predetermined inner pressure when the inner pressure is applied to the cut-off lid 6.;COPYRIGHT: (C)2004,JPO
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