| 摘要 |
PROBLEM TO BE SOLVED: To provide a toilet bowl wash water tank device unable to easily increase a wash water supply quantity to a toilet bowl more than a preset quantity. SOLUTION: This toilet bowl wash water tank device has a wash water tank for storing wash water to be supplied to the toilet bowl and arranging a drain port in a bottom part for communicating with the toilet bowl, a drain valve for opening-closing the drain port, an operation part for pulling up and operating this drain valve, a connecting member for connecting this operation part to the drain valve, and a float installed on the connecting member in a state of inserting this connecting member and exhibiting buoyancy for maintaining the drain valve in a valve opening state in a state of sinking in the wash water. The connecting member is provided with an upper side storage part and a lower side storage part for regulating a moving range of the float on the connecting member. At least the lower side storage part has a lower side irreversible storage tool unremovable from the connecting member as long as the part is broken with physical irreversibility. COPYRIGHT: (C)2009,JPO&INPIT
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