Toto Ltd.

Satoshi Yamakawa

Shu Kashirajima

Masaki Kitamura

Kazuyoshi Mizoguchi

Kyoji Asada

The bowl portion of the flush toilet includes a bowl-shaped waste receiving surface and a rim portion formed on a top edge of the bowl portion. The rim portion includes a rim inside wall portion located on an inner side of the top edge of the bowl portion. The rim inside wall portion has a rim inside surface located at a lower area of the rim inside wall portion and a rim inside wall upper sloped surface having a section in a vertical plane, the shape of the section being sloped from an upper edge of the rim inside surface to an upper edge of the rim inside wall portion. The ratio between the height of the rim inside surface and the height of the rim inside wall upper sloped surface is 1:1 to 6:1 in a section in a vertical plane at any area other than a rear area.

Flush toilet

A flush toilet having a bowl portion including a bowl-shaped waste receiving surface and a rim portion wherein the rim portion includes a rim top inside corner portion, and a rim top outside corner portion, and in at least part of the entire perimeter of the rim portion, the rounding of the rim top inside corner portion is formed to be larger than the rounding of the rim top outside corner portion. This rim profile enables the rim portion top surface, the rim top inside corner portion, and the inside wall can be efficiently cleaned.

A flush toilet wherein the rim inside wall portion comprises a rim inside wall upper sloped surface, and an improvement in user visibility and user rim portion cleanability is sought, flush water can be constrained from splashing outside the bowl portion by traveling by centrifugal force along the rim inside wall upper sloped surface from the inside surface formed at a relatively low height. The rim portion of the flush toilet of the invention includes a rim inside wall portion; the rim inside wall portion comprises a rim inside wall upper sloped surface, and an inside surface vertically extending straight up to the rim inside wall upper sloped surface; and the water supply apparatus comprises a constant flow rate valve for spouting a predetermined constant flow rate of flush water from the water spouting portion.

A flush toilet includes: a bowl portion; a rim portion disposed on a top edge of the bowl portion; a spout portion for spouting flush water supplied from the water supply source to the bowl portion to form a circulating current; a discharge passage for discharging waste in the bowl portion, an inlet portion of the discharge passage being connected at the bottom of the bowl portion; a sanitary washing device disposed at a rear of the bowl portion, the sanitary washing device including a nozzle for spraying flush water toward a user positioned over the bowl portion; and a skirt portion disposed to respectively cover sides of both the bowl portion and the discharge passage.

A flush toilet wherein at least a portion of the exterior part of an exterior member installed on a rim portion can be easily installed and registered at the height of the rim outer wall upper sloped surface, and seen from the toilet lateral direction, the border between at least a part of the exterior part of the exterior member and the rim outer wall upper sloped surface appears as a single aligned straight line, imparting an aesthetic impression to the user. The rim portion of the flush toilet of the invention includes a rim outer wall upper sloped surface being positioned in an outside of an upper region of the rim outer wall portion, and at least a portion of the exterior part is disposed at the height of the rim outer wall upper sloped surface.

Growing community of inventors

Kitakyushu, Japan

Satoshi Yamakawa