Flush toilet

Patent metadata

Field	Value
Publication number	US-9850646-B2
Application number	US-201615341748-A
Country	US
Kind code	B2
Filing date	Nov 2, 2016
Priority date	Nov 12, 2015
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

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.

First claim

What is claimed is:

1. A flush toilet for discharging waste with flush water supplied from a water supply source, comprising:
a bowl portion;
a rim portion disposed on a top edge of the bowl portion;
a spout portion configured to spout flush water supplied from the water supply source to the bowl portion so as to form a circulating flow;
a discharge passage for discharging waste in the bowl portion, the discharge passage including an inlet portion 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 which sprays the flush water toward a user positioned over the bowl portion; and
a skirt portion configured to cover sides of both the bowl portion and the discharge passage;
wherein a side surface of the skirt portion extending towards the rear of the bowl portion includes a projecting area, the projecting area being configured to project further upward than a top surface of the rim portion so as to cover the sides of the sanitary washing device, and a top surface of the sanitary washing device is disposed on an upper portion of the projecting area of the skirt portion.

2. The flush toilet according to claim 1 , wherein the flush toilet further comprises a seal member which is disposed between a bottom surface of the sanitary washing device and a top surface of a rear area of the rim portion.

3. The flush toilet according to claim 1 , wherein a top surface of the skirt portion includes a horizontal portion formed essentially horizontally, and a projecting portion projecting upward so as to cover the side of the sanitary washing device from the back end of the horizontal portion; the rim portion is adhered to both the horizontal portion and the projecting portion on the top surface of the skirt portion.

4. The flush toilet according to claim 3 , wherein the spout portion includes a spout port for spouting water rearward, the spout port being disposed near a midway portion in a front-to-back direction of the rim portion on one side in a left-to-right direction, and the projecting portion on the top surface of the skirt portion is configured to gradually project rearward from around the top surface of the rim portion near the spout port.

5. The flush toilet according to claim 1 , wherein the skirt portion has an outer circumferential surface which is configured to taper downward from around a midway portion in the up-down direction of the skirt portion.

6. The flush toilet according to claim 1 , wherein the flush toilet further comprises a toilet seat placed so as to cover the sanitary washing device and the rim portion from above.

7. The flush toilet according to claim 6 , wherein the flush toilet further comprises a toilet lid disposed to cover an entire of the toilet seat from above.

8. The flush toilet according to claim 7 , wherein the skirt portion has an outer surface area which is set at 60% to 70% of a total surface area of both outer surface areas of the toilet lid and the skirt portion.

9. A flush toilet for discharging waste with flush water supplied from a water supply source, comprising:
a bowl portion;
a rim portion disposed on a top edge of the bowl portion;
a spout portion configured to spout flush water supplied from the water supply source to the bowl portion so as to form a circulating flow;
a discharge passage for discharging waste in the bowl portion, the discharge passage including an inlet portion 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 which sprays the flush water toward a user positioned over the bowl portion; and
a skirt portion configured to cover sides of both the bowl portion and the discharge passage;
wherein the skirt portion is configured to project further upward than a top surface of the rim portion so that a side surface of the skirt portion extends toward the rear of the bowl portion to cover the sides of the sanitary washing device, and a top surface of the sanitary washing device is disposed on an upper portion of the skirt portion;
wherein the nozzle of the sanitary washing device is positioned above a rear of the rim portion at a standby state prior to use, and a front end of the nozzle extends up to a predetermined position above the bowl portion so as to spray the flush water in a predetermined direction when in use; and
wherein a height position of the top surface of a rear area of the rim portion is either set to a same height position as the top surface of a front area of the rim portion, or is set to a height position higher than the same height position, so that the nozzle in use does not submerge at near the same height position as the height position of the top surface of the bowl portion.

Assignees

• Toto Ltd

Inventors

• Mizoguchi kazuyoshi
• Yamakawa Satoshi
• Kitamura Masaki
• Kashirajima Shu

Classifications

• E03D11/02

  Water-closet bowls (auxiliary chambers with connections to flushing water for bowl-cleaning utensils E03D9/06; modified for using upwardly-directed sprays E03D9/08; seats or covers A47K13/00 ){; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl (parts or details of bowls E03D11/13)} · CPC title

• E03D11/08

  Bowls with means producing a flushing water swirl · CPC title

• E03D9/08 Primary

  Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices (showers A47K3/28; bathing devices for special therapeutic or hygienic purposes A61H33/00, for specific parts of the body A61H35/00 ){; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting} · CPC title

• E03D11/135

  Supports for bowls · CPC title

• A47K13/00

  Seats or covers for all kinds of closets · CPC title