FLUSH TOILET BOWL

• Main Authors: NAGATOMI HIROFUMI, FURUYA YOICHI, OKADA KEISUKE, OKUBO MAYU, KIMURA TOMOYUKI, URATA SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 09.11.2015
• Subjects: FIXED CONSTRUCTIONS; FLUSHING VALVES THEREFOR; SEWERAGE; WATER SUPPLY; WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES

PROBLEM TO BE SOLVED: To provide a flush toilet bowl capable of improving its sewerage discharging performance by reliably forming a bundled main flow moving to the inlet of a drain trap part.SOLUTION: A flush toilet bowl 1 includes a bowl part 12 including a bowl-shaped sewerage receiving faces 16, 20, and a rim portion 18 located at the upper edge and having an inner peripheral face, a drain trap pipeline 14 for discharging sewerage, a rim discharge part for discharging washing water from a rim discharge port along the inner peripheral face of the rim portion 18 to form a swirl flow, the rim portion 18 having the inner peripheral face exposed to an inside space of the bowl part 12 and formed in an overhanging shape, the inner peripheral face 30 consisting of a bottom face 30a, a side face 30b extending upward from the outer end of the bottom face 30a, and an upper face 30c extending from the upper end of the side face 30b to the inside space, the bowl part 12 being formed with a guide portion which guides the washing water discharged from the rim discharge part to swirl to the upper face of the rim portion 18 and drops it on the bowl part 12 at its predetermined position. 【課題】排水トラップ部の入口に向かう束になった主流を確実に形成して、汚物の排出性能を向上させることができる水洗大便器を提供する。【解決手段】水洗大便器１は、ボウル形状の汚物受け面１６，２０と、上縁に位置し内周面を有するリム部１８と、を備えたボウル部１２と、汚物を排出する排水トラップ管路１４と、洗浄水をリム吐水口からリム部１８の内周面に沿って吐水し旋回流を形成するリム吐水部と、を有し、リム部１８は、内周面がボウル部１２の内側空間に露出し且つオーバーハング形状に形成され、内周面３０が、底面３０ａと、底面３０ａの外端より上方に向かって延びる側面３０ｂと、側面３０ｂの上端より内側空間に向かって延びる上面３０ｃとからなり、ボウル部１２には、リム吐水部から吐水され旋回する洗浄水をリム部１８の上面へと導いてボウル部１２の所定位置に落下させるガイド部が形成されている。【選択図】図３