Toto Ltd.

Seika Tatsuoka

Hideki Tanimoto

Koki Shinohara

Kenji Hatama

Makoto Abe

The present invention provides a flush water tank device (), including: a flush water tank (); a discharge valve () that causes the lower spout port to eject the flush water by switching between discharge and stopping of the flush water; a water pressure driving mechanism () that drives the discharge valve with a water supply pressure; a first on-off valve () that switches between water ejection and stopping of the flush water; a second on-off valve () that switches between water supply and stopping of the flush water to the water pressure driving mechanism; and a delay valve opening mechanism () that causes the second on-off valve to open with a delay of predetermined time after water ejection from the upper spout port is started, using a part of the flush water introduced via the first on-off valve, to supply the flush water to the water pressure driving mechanism.

Flush water tank device and flush toilet apparatus provided with the same

The present invention provides a flush water tank device () that supplies flush water to an upper and lower spout port of a flush toilet () including; a flush water tank (); a discharge valve (); a first on-off valve () that performs switching between ejection and stopping of the flush water from the upper spout port; a first on-off valve driving mechanism () that is moved from a stopped position to an ejection position based on an user operation; a biasing mechanism () that causes the first on-off valve driving mechanism to move to the stopped position; a holding mechanism () that holds, at the ejection position, the first on-off valve driving mechanism at the ejection position against the bias force; and a releasing mechanism () that releases the holding of the first on-off valve driving mechanism, using the flush water flowing out from the first on-off valve.

Growing community of inventors

Kitakyushu, Japan

Seika Tatsuoka