Flush toilet

Patent metadata

Field	Value
Publication number	US-10053849-B2
Application number	US-201715417445-A
Country	US
Kind code	B2
Filing date	Jan 27, 2017
Priority date	Feb 19, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

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.

First claim

What is claimed is:

1. A flush toilet that cleans a bowl by cleaning water, comprising:
a toilet main body; and
a water supply device that supplies the cleaning water to a supply opening of the toilet main body;
the toilet main body including:
a bowl having a waste receiving surface having a bowl shape, a rim provided on an upper side of the waste receiving surface, a rim water passage formed on an entire circumference of the rim to introduce the cleaning water, and an aperture formed on the entire circumference of the rim to supply the cleaning water on the waste receiving surface from the rim water passage;
a discharge passage an inlet of which is connected to a lower side of the bowl to discharge wastes; and
a water conduit formed between the supply opening and the rim water passage to introduce the cleaning water to the rim water passage,
wherein the water conduit includes an upstream water conduit extending from the supply opening to one side from a center line of the toilet main body, the center line being positioned from a front end to a rear end of the toilet main body and at a center in a left-right direction of the toilet main body, and a downstream water conduit extending from the upstream water conduit to the other side from the center line of the toilet main body,
the upstream water conduit is formed such that an entire downstream end of an inner wall surface of the upstream water conduit is positioned in the one side from the center line of the toilet main body, and
the downstream water conduit is formed such that an entire downstream end of an inner wall surface of the downstream water conduit is positioned in the other side from the center line of the toilet main body.

2. The flush toilet according to claim 1 , wherein a width of the downstream water conduit is smaller than a width of the upstream water conduit.

3. The flush toilet according to claim 1 , wherein a width of the downstream water conduit is made smaller toward an exit of the downstream water conduit from an inlet of the downstream water conduit.

4. The flush toilet according to claim 1 , wherein a width of the downstream water conduit is made larger toward an exit of the downstream water conduit from an inlet of the downstream water conduit.

5. The flush toilet according to claim 1 , wherein a center line of the upstream water conduit extends to be biased to one side in the left-right direction from a center of the supply opening.

6. The flush toilet according to claim 1 , wherein the water conduit further includes a bending portion formed between an exit of the upstream water conduit and an inlet of the downstream water conduit, wherein the bending portion is formed such that a curvature radius of an outer circumference wall of a flow passage in the bending portion is smaller than a curvature radius of an inner circumference wall of the flow passage.

7. The flush toilet according to claim 1 , wherein the water supply device is a storage tank that stores cleaning water, wherein a bottom portion of the storage tank is provided with a discharge opening that supplies the cleaning water to the supply opening of the toilet main body, and the discharge opening of the storage tank is provided with a guiding device that guides the cleaning water to be supplied to the supply opening of the toilet main body to an extension direction of the upstream water conduit.

8. The flush toilet according to claim 7 , wherein the guiding device is a cylindrical guiding member for connection between the discharge opening and the supply opening, wherein the guiding member is provided with a narrowed portion projecting inside from a part of or an entire circumference of an inner wall of the guiding member such that the cleaning water supplied to the supply opening flows to the extension direction of the upstream water conduit.

9. A flush toilet that cleans a bowl by cleaning water, comprising:
a toilet main body; and
a water supply device that supplies the cleaning water to a supply opening of a toilet main body;
the toilet main body including a bowl having a waste receiving surface having a bowl shape, a rim provided on an upper edge portion of the bowl, a rim water passage formed on an inner circumference of the rim to introduce the cleaning water, and a spout portion opening on the rim water passage and spouting the cleaning water to the rim water passage;
a discharge passage connected to a lower side of the bowl to discharge wastes; and
a water conduit formed between the supply opening and the spout portion to introduce the cleaning water to the spout portion,
wherein the water conduit includes an upstream water conduit extending from the supply opening to one side from a center line of the toilet main body, the center line being positioned from a front end to a rear end of the toilet main body and at a center in a left-right direction of the toilet main body, and a downstream water conduit extending from the upstream water conduit to the other side from the center line of the toilet main body,
the upstream water conduit is formed such that an entire downstream end of an inner wall surface of the upstream water conduit is positioned in the one side from the center line of the toilet main body, and
the downstream water conduit is formed such that an entire downstream end of an inner wall surface of the downstream water conduit is positioned in the other side from the center line of the toilet main body.

Assignees

• Toto Ltd

Inventors

• Matsuo Naoto
• Shiohara Eiji
• Hara Hiroyuki
• Adachi Yoshikatsu

Classifications

• E03D11/06 Primary

  Bowls with downwardly-extending flanges {for the sake of flushing} · CPC title

• E03D11/08 Primary

  Bowls with means producing a flushing water swirl · CPC title

• E03D11/13

  Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls {, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing} · CPC title

• E03D11/17

  Means for connecting the bowl to the flushing pipe · CPC title