US 11,795,677 B2
Flush toilet
Tomoaki Morita, Fukuoka (JP); Takehiro Minami, Fukuoka (JP); and Keita Yoshisaka, Fukuoka (JP)
Assigned to TOTO LTD., Kitakyushu (JP)
Filed by TOTO LTD., Kitakyushu (JP)
Filed on Aug. 20, 2021, as Appl. No. 17/407,221.
Claims priority of application No. 2020-146383 (JP), filed on Aug. 31, 2020.
Prior Publication US 2022/0064931 A1, Mar. 3, 2022
Int. Cl. E03D 11/18 (2006.01)
CPC E03D 11/18 (2013.01) [E03D 2201/30 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A flush toilet that washes a toilet body with a washing water,
wherein the toilet body includes:
a bowl part that receives a waste;
a drainage water trap that is connected to a bottom of the bowl part;
a jet water spout port that spouts a washing water from a front side of the drainage water trap toward the drainage water trap; and
a discharge port that is connected to the drainage water trap and discharges a waste from the toilet body,
wherein the drainage water trap includes:
a rising pipe line that is connected to the bowl part;
a curved pipe line that includes a rising curved part that is connected to the rising pipe line and rises backward and a falling curved part that falls backward from the rising curved part; and
a falling pipe line that is connected to the curved pipe line,
wherein the drainage water trap includes a swelled part that forms a space that is swelled backward and is continuous with the discharge port, on a downstream side of a curved top part of the curved pipe line, wherein
the curved pipe line is composed of a rising curved part that rises backward and a falling curved part that falls backward from the rising curved part, and
a curvature of a top inner peripheral surface of the falling curved part is less than a curvature of a top inner peripheral surface of the rising curved part in a side view thereof.