CN-115897748-B - Flushing closet

Abstract

The flush toilet of the present invention includes a bowl portion including a bowl portion and a drain trap pipe, the bowl portion including a bottom wall formed above and forward of an inlet of the drain trap pipe, a side wall formed so as to surround the periphery of the bottom wall, and a joint portion joining an outer edge of the bottom wall and a lower edge of the side wall, the bottom wall of the bowl portion including an inclined portion, and a guide portion formed on left and right outer sides of the inclined portion and guiding cleaning water or dirt from the front toward the inlet of the drain trap pipe, the inclined portion being formed so as to be convex upward as a whole thereof when viewed in cross section from a side surface, and inclined downward from the front toward the inlet of the drain trap pipe.

Inventors

• Okabe Dahui
• Junji Makoto
• Xiao Lin Xiangzi

Assignees

• TOTO株式会社

Dates

Publication Date

20260512

Application Date

20220929

Priority Date

20210930

Claims (13)

1. 1. A flush toilet which discharges waste by washing with washing water, characterized in that, The device comprises: a bowl part, which is provided with a bowl-shaped dirt receiving surface, an inner edge part formed above the dirt receiving surface and a kettle-shaped part arranged below the dirt receiving surface and forming a water accumulation part by accumulated water; a water spouting portion provided in the rim portion and spouting the washing water into the tub portion; And a drain elbow pipe having an inlet connected to the lower part of the pot-shaped part for discharging dirt in the basin, The kettle-shaped part comprises a bottom wall formed above and in front of the inlet of the drain elbow pipe, a side wall formed so as to surround the periphery of the bottom wall, and a joint part for joining the outer edge of the bottom wall and the lower edge of the side wall by a surface having curvature, The bottom wall of the kettle-shaped part is provided with an inclined part formed on the left and right spans relative to the left and right central axes thereof, and a guide part formed on the left and right outer sides of the inclined part and guiding the cleaning water or dirt from the front toward the inlet of the drain elbow pipe, The guide portion is formed in a convex shape upward when viewed in a front cross-section, the inclined portion is formed in a concave shape downward from lower ends of left and right inner sides of the guide portion, The inclined portion is formed to be convex upward as a whole when viewed in a side cross-sectional view, and is inclined downward from the front toward the inlet of the drain trap pipe.
2. 2. The flush toilet according to claim 1, wherein the inclined portion is set such that a recess amount in a vertical direction from an upper end to a lowermost bottom surface thereof increases with an inlet side of the drain trap pipe toward a rear side when viewed in a front cross-section.
3. 3. The flush toilet according to claim 1, wherein the inclined portion is set so that a width in a lateral direction thereof increases with an inlet side of the drain trap pipe toward the rear in a plan view.
4. 4. The flush toilet according to claim 1, wherein the bottom wall of the bowl portion further includes a rear bottom portion protruding forward from a rear side of the water accumulation portion, the rear bottom portion being configured to guide the rear wash water in the bowl portion forward.
5. 5. The flush toilet according to claim 4, wherein a vertex of the portion of the inclined portion formed in a convex shape upward when viewed in cross-section from the side is located in a range of height positions between an upper end and a lower end of the rear bottom portion.
6. 6. The flush toilet according to claim 1, wherein the portion of the inclined portion formed in a convex shape upward when viewed in cross-section from the side is formed by a surface having a curvature, and the entire portion thereof is formed so as to be inclined downward from a front region of the water accumulation portion to an inlet of the drain trap pipe.
7. 7. The flush toilet according to claim 1, wherein the drain trap pipe includes a descending pipe extending downward from the bowl portion and an ascending pipe connected to the descending pipe and extending upward from the descending pipe, The descending pipe is provided with the inlet and an outlet formed at a connection part with the ascending pipe, The ascending pipeline is provided with an inlet formed at a connection part with the descending pipeline and an outlet formed at a downstream side, When setting the 1 st horizontal virtual line, the 2 nd horizontal virtual line, and the 3 rd virtual line, a reduction portion having a height smaller than the downstream side from the vertical cross section of the 3 rd virtual line orthogonal to the flow line of the washing water is formed between the 1 st horizontal virtual line and the 2 nd horizontal virtual line, the 1 st horizontal virtual line being a line extending forward from the connection portion of the descending pipe and the rear side of the basin portion, the 2 nd horizontal virtual line being a line located below the 1 st horizontal virtual line and extending forward from the top of the connection portion of the descending pipe and the ascending pipe, and the 3 rd virtual line being a line extending from the top of the descending pipe along the flow line of the washing water.
8. 8. The flush toilet according to claim 7, wherein the reduction portion is provided on a bottom surface of a front region of the bowl portion connected to the descending conduit or on a side surface of a front side of the descending conduit, and is formed of a1 st arc surface protruding toward a center side of the descending conduit.
9. 9. The flush toilet as claimed in claim 8, wherein a top of the 1 st arc surface is provided between the 1 st horizontal virtual line and the 2 nd horizontal virtual line.
10. 10. The flush toilet according to claim 7, wherein a connection portion between the down pipe and the rear side of the bowl portion is formed by a rear circular arc portion protruding toward the center side of the bowl portion.
11. 11. The flush toilet according to claim 10, wherein the reduction portion is formed by a1 st arc surface protruding toward a center side of the descent pipe, and the rear arc portion is provided at a position above the 1 st arc surface.
12. 12. The flush toilet according to claim 7, wherein the bowl portion includes a waste receiving surface and a water accumulation portion provided below the waste receiving surface, and a 2 nd arc surface protruding toward a center side of the bowl portion is provided on a bottom surface of the water accumulation portion.
13. 13. The flush toilet according to claim 12, wherein the reduction portion is formed of a1 st arc surface protruding toward a center side of the descent pipe, the 1 st arc surface and the 2 nd arc surface being continuously provided, a radius of curvature of the 1 st arc surface being set to be larger than a radius of curvature of the 2 nd arc surface.

Description

Flushing closet Technical Field The present invention relates to a flush toilet, and more particularly, to a flush toilet that discharges waste by being washed with washing water. Background Conventionally, as a flush toilet that discharges waste by washing with washing water, for example, a flush toilet body including a bowl portion and a drain trap pipe having an inlet connected to the lower portion of the bowl portion is known as described in japanese patent application laid-open No. 2015-67954 (patent document 1). In such a conventional flush toilet, the bowl portion of the toilet body includes a bowl-shaped waste receiving surface and a pot-shaped portion provided below the waste receiving surface. Further, a water accumulation portion for accumulating a predetermined amount of water is formed in the kettle-like portion above the drain trap pipe. Further, a flat surface inclined downward toward the inlet of the drain trap pipe is formed by the bottom surface of the pot-shaped portion forming the water accumulation portion. Thus, when the cleaning water flowing into the pot-shaped portion from the dirt receiving surface contacts the flat bottom surface of the pot-shaped portion, a water flow (hereinafter, referred to as "longitudinal swirling flow") swirling in the longitudinal direction is formed in the water accumulation portion, and the cleaning water in the pot-shaped portion is guided to the inlet of the drain trap pipe. In particular, in the so-called "flush toilet" in which dirt is flushed down by the action of running water generated by the fall of water in the bowl portion, the action of pressing dirt into the drain trap pipe becomes remarkable by the action of the longitudinal swirling flow in the bowl portion acting on dirt or the like that has spread to the vicinity of the inlet of the drain trap pipe and the application of water pressure from above by the washing water that has been discharged from the inner edge portion of the bowl portion. However, in the conventional flush toilet described in patent document 1, in order to form a longitudinal swirling flow in the water accumulation portion of the bowl-shaped portion of the toilet body, it is necessary to design the size of the water accumulation area (the planar cross-sectional area of the water accumulation area, etc.) to be small. However, if the size of the water accumulation area of the water accumulation portion is designed to be smaller than the conventional one, the surface area of the dirt receiving surface of the bowl portion or the area other than the water accumulation portion in the pot portion increases accordingly, which causes a problem that the area where dirt adheres also increases. On the other hand, if the size of the water accumulation area of the water accumulation portion is designed to be larger than the conventional one, the flow of the washing water in the water accumulation portion is difficult to concentrate toward the center side of the water accumulation portion, and thus it becomes difficult to collect dirt. As a result, the water pressure of the washing water cannot effectively act on the dirt, so-called "pressure relief phenomenon" occurs, and there is a problem that the dirt discharge performance is lowered, because the dirt spreads in the water accumulation portion and the floating area is also enlarged, and a gap is generated between the dirt and the drain trap pipe. Disclosure of Invention The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a flush toilet capable of suppressing adhesion of dirt in a bowl portion (particularly, a pot-shaped portion) and improving both cleaning performance and dirt discharge performance even if the entire water accumulation area of a water accumulation portion is secured to a large extent. In order to solve the above problems, the present invention provides a flush toilet for discharging dirt by washing with washing water, comprising a bowl portion having a bowl-shaped dirt receiving surface, an inner edge portion formed above the dirt receiving surface, and a pot-shaped portion provided below the dirt receiving surface and forming a water accumulation portion by accumulated water, a spouting portion provided at the inner edge portion and spouting the washing water into the bowl portion, and a drain trap pipe having an inlet connected to the lower side of the pot-shaped portion and discharging the dirt in the bowl portion, the pot-shaped portion having a bottom wall formed above and in front of the inlet of the drain trap pipe, a side wall formed so as to surround the periphery of the bottom wall, and a joint portion joining the outer edge of the bottom wall and the lower edge of the side wall, the bottom wall of the pot-shaped portion having an inclined portion formed on the left and right spans thereof with respect to the central axis of the left and right central axis thereof,