Toto Ltd.

Koichiro Hiwa

Yuki Shimokawa

Haruki Matsuda

Kenji Hatama

Takashi Yoshioka

Hironori Yamasaki

Tomofumi Ohnishi

Tsubasa Miyake

Minoru Matsui

Michinori Yananose

Nobutake Sakumoto

Shinji Okano

Yuta Kondo

Mitsuhiro Suenaga

Tomoaki Suetsugu

Shinichi Koso

Toshiyuki Ito

A discharge valve device includes a valve body, an actuation shaft, a water storage cylinder, and a float, and from when the valve body opens to when the valve body closes, either flushing mode of a large flushing mode in which the flush water in a water storage tank is supplied from a discharge opening to the flush toilet in a first flush water amount or a small flushing mode in which the flush water is supplied in a second flush water amount smaller than the first flush water amount is selectively executable, and the water storage cylinder or the float is configured to change a lowering speed of the float with decrease in water level in the water storage cylinder depending on the selected large flushing mode or small flushing mode.

Discharge valve device, flush water tank device, and flush toilet

The present invention is a flush water tank device including a flush water tank main body, a water supply valve, and a discharge valve, in which during a flush of the flush toilet, the discharge valve is opened until a water level in the flush water tank main body is lowered from a predetermined full water level to a predetermined dead water level, a lowering speed of the water level in the flush water tank main body changes at a predetermined inflection water level between the full water level and the dead water level, and the lowering speed of the water level between the inflection water level and the dead water level is faster than the lowering speed of the water level between the full water level and the inflection water level.

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

A flush toilet includes: a water supply channel that allows flush water to be supplied from a flush water storage tank to a rim spout port and a jet spout port; and a switching device that switches a water supply path so as to execute a first flushing process of spouting the flush water in the water supply channel from the rim spout port and after that, execute a second flushing process of spouting the flush water in the water supply channel from at least the jet spout port. The switching device includes a switching valve body that operates by receiving the water pressure of the flush water pressurized by a pressure pump. This switching valve body performs switching to a water supply path that allows the first flushing process or the second flushing process to be executed according to the water pressure generated by the pressure pump.

Flush toilet

Growing community of inventors

Kitakyushu, Japan

Koichiro Hiwa