Toto Ltd.

Yuichi Oda

Yukinori Kubozono

Haruki Matsuda

Hisashi Koga

Atsuko Yamasaki

A flush water supply device includes: a water supply unit including a water supply valve; a water compartment fittingly attached to the water supply unit; a float provided inside the water compartment; and a swingable member having one end connected to the float and the other end connected to the water supply valve, wherein the water compartment is formed in a flattened shape in which a maximum vertical length becomes less than a maximum horizontal length by a given value, and a ratio of a distance between the fulcrum adjacent to the water supply valve and an effort point defined by the swingable member and the float, to a distance between the fulcrum adjacent to the water supply valve and a load point defined by the swingable member and the water supply valve is set to a given value or more.

Flush water supply device, flush water tank assembly with flush water supply device, and flush toilet with flush water tank assembly

A flush water supply device includes: a water supply valve for switching between a water supplying state and a water stopping state with respect of an inside of the flush water tank; a refill water system on a downstream side of the water supply valve and adapted to allow flush water to be supplied to the flush water tank, and further supplied to a toilet main body as refill water, wherein the refill water system includes a common passage-forming portion which forms a common passage having: an inlet port for allowing inflow of the flush water therethrough; a tank-side outlet port for allowing the flush water to flow out toward the flush water tank therethrough; a main unit-side outlet port for allowing the flush water to flow out toward the toilet main body therethrough; and a vent port; and a vacuum break valve in the common passage-forming portion.

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Yukuhashi, Japan

Yuichi Oda