| 摘要 |
PROBLEM TO BE SOLVED: To keep the size of a water storage tank to the necessary minimum and to miniaturize the water storage tank accordingly. SOLUTION: In a toilet washing water storage tank structure constituted of a drain valve for supplying and stopping water to a toilet provided to a toilet washing water storage tank and the bottom thereof, a toilet washing drive for opening and closing the drain valve through a ball chain connected to the drain valve, a water supply valve for supplying and stopping water to the water storage tank and an overflow pipe for draining overflow from the water storage tank to the toilet, and it is so characterized that the lower end of the overflow pipe passes through a hole bored in the bottom of the water storage tank in a water-tight state and is connected and that the toilet washing water storage tank structure includes a bypass hole provided to downstream of the drain valve and a connection pipe for connecting the lower end of the overflow pipe in a water-tight state respectively.
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