US 11,987,968 B2
Flush toilet device
Hiroshi Hashimoto, Kitakyushu (JP); Kenichi Nakamura, Kitakyushu (JP); Takumi Tsuchitani, Kitakyushu (JP); Shinichi Urata, Kitakyushu (JP); Chisato Sone, Kitakyushu (JP); and Koichiro Matsumura, Kitakyushu (JP)
Assigned to TOTO LTD., Kitakyushu (JP)
Filed by TOTO LTD., Kitakyushu (JP)
Filed on Aug. 26, 2022, as Appl. No. 17/822,650.
Claims priority of application No. 2021-139355 (JP), filed on Aug. 27, 2021; application No. 2021-139356 (JP), filed on Aug. 27, 2021; application No. 2021-139357 (JP), filed on Aug. 27, 2021; and application No. 2022-059287 (JP), filed on Mar. 31, 2022.
Prior Publication US 2023/0066417 A1, Mar. 2, 2023
Int. Cl. E03D 11/08 (2006.01); E03D 1/34 (2006.01); E03D 1/38 (2006.01)
CPC E03D 11/08 (2013.01) [E03D 1/34 (2013.01); E03D 1/38 (2013.01); E03D 2201/40 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A flush toilet device that supplies flush water to an upper spout port provided above a pooled water surface of a flush toilet main body and a lower spout port provided below the pooled water surface to perform a flush, the flush toilet device comprising:
a flush toilet main body that includes a bowl and a discharge trap conduit communicating with a lower portion of the bowl;
a flush water tank main body that stores flush water for washing the flush toilet main body;
a discharge valve that switches between spout and stop of the flush water from the lower spout port by switching between discharge and stop of the flush water stored in the flush water tank main body;
a branching portion that splits flush water supplied from a water supply source into a first branched flow path and a second branched flow path;
a first on-off valve that is provided in the first branched flow path and switches between a spouting state and a spouting stop state of the flush water from the upper spout port;
a second on-off valve that is provided in the second branched flow path and switches between supply and stop of the flush water into the flush water tank main body; and
a controller that controls the first on-off valve and the second on-off valve so that water is spouted from the upper spout port and is supplied into the flush water tank main body at a same time by opening the first on-off valve and the second on-off valve;
wherein the second on-off valve is opened in a state where the first on-off valve is open and the water is spouting from the upper spout port, and
a flow rate of the flush water spouting from the upper spout port is lowered when the second on-off valve is opened.