Toto Ltd.

Naoto Matsuo

Eiji Shiohara

Hiroyuki Hara

Shu Kashirajima

Masaaki Momoe

Masaki Kitamura

Yuuki Shinohara

Masaaki Inoue

Yoshikatsu Adachi

A flush toilet includes: a bowl including a rim formed on the top edge of a bowl-shaped waste receiving surface, a discharge path connected to the bottom of this bowl for discharging waste, and a rim spout portion disposed on this rim for spouting flush water within the bowl to form a circulating flow. The bowl further includes a shelf, formed in the circumferential direction from the rim spout portion between the waste receiving surface top edge and the rim bottom end, for guiding flush water spouted from the rim spout portion in the circumferential direction. The rim spout portion is disposed on either the left or right of either the side region or the front region of the bowl, and forms a rim spout port to spout flush water rearward. The width of the shelf is set to decrease from the side to the rear of the bowl.

Flush toilet

There is provided a flush toilet that cleans a bowl using a swirl flow formed by cleaning water flowing down from a slit aperture formed on a rim. The flush toilet has a discharge passage an inlet of which is connected to a lower portion of a waste receiving having a bowl shape, and an inlet of an inlet conduit of the discharge passage is formed such that on a horizontal cross-section plane a maximum width of a front portion in a left-right direction is larger than a maximum width of a rear portion in the left-right direction.

A flush toilet of the present invention is provided with a toilet main body and a storage tank supplying cleaning water to a supply opening of the toilet main body. The toilet main body includes a bowl, a rim, a rim water passage formed on an entire circumference of the rim, and an aperture formed on the entire circumference of the rim, and a water conduit formed between the supply opening and the rim water passage. The water conduit includes an upstream water conduit extending to the right side from the supply opening, and a downstream water conduit extending to the left side from the upstream water conduit, and the downstream water conduit is formed such that a downstream end of an inner wall surface on the right side is positioned in the left side to a center line of the toilet main body in the left-right direction.

To provide a flush toilet in which: a circulating flow can be formed to uniformly circulate over a waste receiving surface while flushing; localized changes in external appearance of a toilet main body can be inhibited; and impression of a left-right symmetrical external shape can be conveyed to users so that design characteristics thereof are favorably preserved. A rim portion in a flush toilet includes a slit opening portion formed between an upper edge portion of the waste receiving surface formed to be left-right asymmetrical and a rim inside wall formed to be left-right symmetrical. The slit opening portion is formed such that a slit gap on one side, to which a connecting water conduit is directed, is smaller than a slit gap on the other side. A circulating flow is formed on the waste-receiving surface by flush water spouted from the slit opening portion having the different slit gaps.

Growing community of inventors

Kitakyushu, Japan

Naoto Matsuo