Flush toilet

Abstract

To provide a flush toilet bowl capable of making a float dirt discharge timing earlier by making washing water flow early from a second rim water discharge port to a reserved water surface even if washing water amount discharged from the second rim water discharge port is increased.SOLUTION: A flush toilet bowl 1 of the invention comprises: a bowl part 6 having a dirt receiving surface 16, a rim part 18 formed on an upper side of the dirt receiving surface, and a pot 22 that is formed on a lower side of the dirt receiving surface and has a reserved water surface 20 formed inside the pot; a first rim water discharge port 24 that is provided on the rim part and discharges washing water forward; a first conduit 30 to supply the washing water to the first rim water discharge port; a second rim water discharge port 26 that is provided on the rim part and discharges the washing water backward; and a second conduit 32 to supply the washing water to the second rim water discharge port. A bottom face 32a of the second conduit is constituted so as to incline downward along a discharge direction of the washing water discharged from the second rim water discharge port and constituted so that extended line of the bottom face intersects with a vertical surface 22a of the pot above a maximum elevated water level B of the reserved water surface during washing.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a flushing toilet, and more particularly to a flushing toilet that discharges dirt with flushing water supplied from a flushing water source.

Background Art

[0002] Conventionally, a toilet bowl having a dirt receiving surface, a rim portion formed above the dirt receiving surface, and a tub portion formed below the dirt receiving surface and having a water storage surface formed therein, and a first rim water discharge port and a second rim water discharge port formed in the rim portion for discharging flushing water, and a drain pipe connected to the bottom of the toilet bowl are known.

[0003] Such a flushing toilet is described in, for example, Patent Documents 1 and 2. Patent Document 1 describes a flushing toilet having a first rim water discharge port and a second rim water discharge port provided behind the first rim water discharge port, and configured to directly introduce the flushing water from the second rim water discharge port into the water storage surface. Also, Patent Document 2, like Patent Document 1, describes a flushing toilet having a first rim water discharge port and a second rim water discharge port, and configured to directly introduce the flushing water distributed by a distribution water supply pipe from the second rim water discharge port into the water storage surface.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, in a flush toilet, in order to suppress the adhesion of dirt to the bowl part, it may be considered to increase the water storage surface in order to reduce the area of the dirt receiving surface which is a dry surface. Here, in the flush toilets described in Patent Documents 1 and 2 mentioned above, since the washing water from the second rim water outlet flows directly into the water storage surface, strong washing water flows into a specific area of the water storage surface. Therefore, in such a flush toilet, when the water storage surface is formed large, the surface of the water storage surface is disturbed because strong washing water flows only into a specific area of the water storage surface, and as a result, it has been found that there is a possibility that the floating dirt floating on the surface of the water storage surface cannot be sufficiently discharged.

[0006] As a result of intensive research, the inventors of the present invention considered that in order to solve the problems caused by forming such a large water storage surface, that is, in order to surely discharge the floating dirt floating on the water storage surface, it is necessary to make the pressing force applied to each area of the water storage surface constant by the washing water discharged from the rim water outlet and suppress the disturbance of the surface of the water storage surface. For this purpose, in a flush toilet having a first rim water outlet and a second rim water outlet, as one method for making the pressing force applied to each area of the water storage surface constant, for example, it is conceivable to increase the amount of washing water discharged from the second rim water outlet and make the washing water flow into the water storage surface earlier.

[0007] However, when the amount of washing water discharged from the second rim water outlet is increased, the momentum of the washing water swirling on the inner peripheral surface of the rim part becomes stronger, and the washing water cannot flow into the water storage surface earlier. Therefore, the discharge timing of the floating dirt is delayed, which is a problem.

[0008] The inventors of the present invention found the problems caused by forming a large water storage surface in a flush toilet, and through intensive research to solve this problem, they were able to make the present invention.

[0009] The present invention has been made to solve the above-described problems, and even if the amount of washing water discharged from the second rim water outlet is increased, the washing water can be quickly introduced from the second rim water outlet to the water surface of the water storage surface, and the discharge timing of floating contaminants can be advanced. An object of the present invention is to provide a flushing toilet bowl that can be advanced.

Means for Solving the Problems

[0010] In order to achieve the above object, the present invention is a flushing toilet bowl that discharges contaminants with washing water supplied from a washing water source, and includes a contaminant receiving surface that receives contaminants, and an inner peripheral surface formed above the contaminant receiving surface. A rim portion having a rim portion, a tub portion formed below the contaminant receiving surface and having a water storage surface formed therein, a first water discharging portion provided in the rim portion and forming a first rim water discharging port for discharging washing water forward along the inner peripheral surface of the rim portion, A first water conduit for supplying the washing water supplied from the washing water source to the first water discharging portion, a second water discharging portion provided in the rim portion and forming a second rim water discharging port for discharging washing water backward along the inner peripheral surface of the rim portion, A second water conduit for supplying the washing water supplied from the washing water source to the second water discharging portion, and a drain pipe connected to the bottom of the bowl portion, and the bottom surface of the second water conduit is discharged from the second rim water discharging port. It is inclined downward along the water discharging direction of the washing water, and the extension line of this bottom surface is configured to intersect the vertical surface of the tub portion above the maximum rising water level of the water storage surface during washing. In the present invention configured as described above, the bottom surface of the second water conduit is inclined downward along the water discharging direction of the washing water discharged from the second rim water discharging port, and the extension line of this bottom surface is the maximum rising water level of the water storage surface during washing. Since it is configured to intersect the vertical surface of the tub portion above, the washing water discharged from the second rim water discharging port can be quickly introduced into the water storage surface, and further, the washing water can be introduced into the water storage so as to cover from above the rising water storage surface. Inside. As a result, according to the present invention, a vertical swirling flow can be formed in the tub portion, and the discharge timing of floating contaminants can be advanced.

[0011] In the present invention, preferably, the upper surface of the second water conduit is inclined downward from upstream to downstream. In the present invention configured as described above, since the upper surface of the second water guide channel is inclined downward from upstream to downstream, the washing water discharged from the second rim water discharge port can be discharged toward the water storage surface.

[0012] In the present invention, preferably, the upper surface of the second water guide channel includes an upstream-side upper surface inclined downward at a first inclination angle and a downstream-side upper surface inclined downward at a second inclination angle gentler than the first inclination angle. In the present invention configured as described above, since the upper surface of the second water guide channel includes an upstream-side upper surface inclined downward at a first inclination angle and a downstream-side upper surface inclined downward at a second inclination angle gentler than the first inclination angle, the washing water supplied to the second water guide channel flows downward while the pressure loss is suppressed by the upstream-side upper surface, and is discharged from the second rim water discharge port in a rectified state by the downstream-side upper surface. Thereby, according to the present invention, the washing water discharged from the second rim water discharge port can be vigorously discharged toward the water storage surface.

[0013] In the present invention, preferably, the second rim water discharge port is formed so as to direct toward the water storage surface. In the present invention configured as described above, since the second rim water discharge port is formed so as to direct toward the water storage surface, the washing water discharged from the second rim water discharge port can be discharged toward the water storage surface.

[0014] In the present invention, preferably, the second water guide channel has a channel cross-section in which the outer lower corner and the inner lower corner are formed with the same radius of curvature. In the present invention configured as described above, since the channel cross-section of the second water guide channel is formed such that the outer lower corner and the inner lower corner have the same radius of curvature, the washing water in the second water guide channel can be vigorously discharged from the second rim water discharge port toward the water storage surface without being disturbed.

Advantages of the Invention

[0015] According to the flushing toilet of the present invention, even if the amount of flushing water discharged from the second rim water outlet is increased, the flushing water can be quickly introduced from the second rim water outlet to the water surface of the accumulated water, and the discharge timing of floating contaminants can be advanced.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0017] Hereinafter, with reference to the drawings, a flushing toilet according to an embodiment of the present invention will be described. First, with reference to FIGS. 1 to 3, the basic structure of the flushing toilet according to the present embodiment will be described. FIG. 1 is a longitudinal sectional view of the flushing toilet according to an embodiment of the present invention, FIG. 2 is a plane sectional view seen along the line II-II of FIG. 1, and FIG. 3 is a partial enlarged view showing the vicinity of the second rim water outlet in FIG. 2. In this specification, for the user's perspective, the front side of the water closet is described as the front side, the rear side as the back side, the right side as the right side, and the left side as the left side.

[0018] As shown in FIGS. 1 to 3, the water closet 1 is a floor drain type water closet arranged on the floor. Further, the water closet 1 is a flushing type toilet that flushes away dirt by the flowing water action caused by the water level difference inside the bowl part.

[0019] The water closet 1 includes a ceramic toilet body 2 and a water storage tank 4 that stores washing water for supplying the washing water for cleaning the toilet body 2. The toilet body 2 is provided with a bowl part 6 on the front side, and a common water passage 8 is formed at the upper rear part, and an opening 7 provided at its upstream end communicates with the water storage tank 4. Further, a drain pipe 10 for discharging dirt is formed at the lower rear part of the bowl part 6.

[0020] The above-described water storage tank 4 is provided with a drain valve 12. When the user opens an operation lever (not shown), the drain valve 12 opens, and the washing water in the water storage tank 4 is supplied to the toilet body 2 and discharged from the first rim water outlet 24 and the second rim water outlet 26 described later.

[0021] In this embodiment, as the washing water source, in addition to the water storage tank 4, a direct water pressure type from tap water or a type using a flush valve may be used, and further, a type that supplies washing water using a pump may also be used.

[0022] Note that although the water closet 1 is a flushing type toilet, it may be a siphon type water closet that uses the siphon action to discharge the dirt in the bowl part 6 from the drain pipe to the outside.

[0023] The bowl portion 6 of the toilet body 2 has a bowl-shaped dirt receiving surface 16, a rim portion 18 formed above the dirt receiving surface 16 and having an inner peripheral surface, and a tub portion 22 formed below the dirt receiving surface 16 and having a water storage surface 20 formed therein. Here, the water storage surface 20 of the tub portion 22 is substantially triangular, 160 mm to 180 mm in the front-rear direction and 125 mm to 145 mm in the width direction when viewed from above, and is formed larger (enlarged) than the water storage surface of a conventional flush toilet. Further, the tub portion 22 includes a vertical surface 22a, and for example, is 200 mm to 240 mm in the front-rear direction and 150 mm to 190 mm in the lateral direction when viewed from above, forming a substantially triangular shape that is oval (an elliptical shape with a tapered front side) rather than the water storage surface 20.

[0024] Also, on the rim portion 18 of the bowl portion 6, a first rim water discharge port 24 for discharging washing water is formed on the front side of the left side when viewed from the front, and a second rim water discharge port 26 for discharging washing water is formed on the rear side of the right side when viewed from the front (see FIGS. 2 and 3). Specifically, the first rim water discharge port 24 is provided in front of the front end of the water storage surface 20, and the second rim water discharge port 26 is provided behind the rear end of the water storage surface 20. Further, a recess 28 extending from such a second rim water discharge port 26 is further formed in the bowl portion 6 (FIGS. 1 to 3).

[0025] The above-described common water passage 8 branches into a first water passage 30 and a second water passage 32 toward the downstream side. The first water passage 30 extends to the first rim water discharge port 24, and the second water passage 32 extends to the second rim water discharge port 26, and the washing water stored in the water storage tank 4 is supplied to the first rim water discharge port 24 and the second rim water discharge port 26. Here, the first rim water discharge port 24 and the second rim water discharge port 26 discharge the washing water in a direction that forms a swirling flow that swirls in the same direction. In the case of this embodiment, a counterclockwise swirling flow is formed.

[0026] Next, the structure on the downstream side of the second rim water discharge port 26 will be described with reference to FIG. 4. FIG. 4 is a partial cross-sectional view taken along line IV-IV of FIG. 2. As shown in FIG. 4, the bottom surface 32a of the second water channel 32 extends as a substantially flat surface. On the other hand, the concave portion 28 of the bowl portion 6 on the downstream side of the second rim water discharge port 26 has a shape curved in an arc shape. The position where the boundary between the bottom surface 32a of the second water channel 32 and the curved shape of the concave portion 28 is extended vertically upward is the second rim water discharge port 26. This second rim water discharge port 26 is indicated by a broken line in FIG. 4. Further, as shown by the broken line in FIG. 3, this second rim water discharge port 26 is inclined inward in a plan view and is directed to the water storage surface 20 as will be described later.

[0027] As shown in FIG. 4, on the downstream side of the second rim water discharge port 26 of the rim 18, an upper surface 34 is formed which extends continuously from the upper end of the second rim water discharge port 26 and inclines downward along the water discharge direction. On the downstream side of this upper surface 34, an enlarged portion 36 is formed which forms a space expanding upward along the water discharge direction of the second rim water discharge port 26.

[0028] Next, the second water channel 32 will be described with reference to FIG. 5. FIG. 5 is a partial cross-sectional view of the second water channel taken along the line V-V of FIG. 3. As shown in FIG. 5, the second water channel 32 includes a bottom surface 32a and an upper surface 32b. The upper surface 32b consists of an upstream upper surface 32c and a downstream upper surface 32d. From upstream to downstream, the upstream upper surface 32c inclines downward by an angle θ1 which is the first inclination angle, and the downstream upper surface 32d inclines downward by an angle θ2 which is the second inclination angle. Here, the second inclination angle θ2 is preferably in the range of 20 degrees to 60 degrees with respect to the horizontal direction, and more preferably 30 degrees. On the other hand, the bottom surface 32a inclines downward by an angle θ3 from upstream to downstream. These inclination angles are formed so as to have the relationship of θ1>θ2>θ3.

[0029] Thus, in the present embodiment, the upper surface 32b of the second water channel 32 inclines more downward from upstream to downstream than the bottom surface 32a of the second water channel 32. Further, the upper surface 32b of the second water channel 32 includes an upstream upper surface 32c which inclines downward at the first inclination angle θ1 from upstream to downstream, and a downstream upper surface 32d which inclines downward at a second inclination angle θ2 gentler than the first inclination angle θ1.

[0030] Next, with reference to FIG. 6, the shape of the second rim water outlet and the cross-sectional shape of the second water guide path will be described. FIG. 6 is a cross-sectional view showing the shape of the second rim water outlet and the cross-sectional shape of the second water guide path as viewed along line VI-VI of FIG. 3. As shown in FIG. 6, the second rim water outlet 26 is substantially rectangular in a front view, and further, its upper end (upper surface) 26a extends downwardly inclined from the inside to the outside, and further, its inner height H1 is formed to be larger than the outer height H2.

[0031] Furthermore, as shown in FIG. 6, in a front view of the second rim water outlet 26, its outer lower corner 26b is formed with a first radius of curvature R1, and its inner lower corner 26c is formed with a second radius of curvature R2. Further, the first radius of curvature R1 is formed to be larger than the second radius of curvature R2 (R1 > R2).

[0032] As shown in FIG. 6, in the flow path cross-section of the second water guide path 32, its outer lower corner 32e and its inner lower corner 32f are formed with the same radius of curvature R3.

[0033] Next, with reference to FIG. 7, the relationship between the shape of the second rim water outlet 26 and the shape of the concave portion 28 of the bowl portion 6 on the downstream side of the second rim water outlet 26 will be described. FIG. 7 is a partial cross-sectional view as viewed along lines A-A, B-B, C-C, and D-D of FIG. 3. In FIG. 7, the cross-section along line A-A shows the shape of the inner lower part of the second rim water outlet 26, and lines B-B, C-C, and D-D show the cross-sectional shape (surface shape) of the concave portion 28 of the bowl portion 6 on the downstream side of the second rim water outlet 26.

[0034] As shown in this Figure 7, in the present embodiment, the recess 28 of the bowl portion 6 on the downstream side of the second rim water outlet 26 is formed continuously with the lower corner portion 26b on the outside of the second rim water outlet 32, and in the water discharge direction, it is formed with curvature radii R4, R5, and R6 that gradually increase from the first curvature radius R1 of the lower corner portion 26b on the outside of the second rim water outlet 32 described above. Note that the curvature radii R4, R5, and R6 are respectively the average values of a plurality of curvature radii.

[0035] Next, with reference to FIGS. 8 and 9, the water discharge direction of the washing water from the second rim water outlet 26 in the present embodiment will be described. FIG. 8 is a partial cross-sectional view of the bowl portion 6 of the water-washed toilet according to the present embodiment as viewed from the front, and FIG. 9 is a partial perspective view of the bowl portion 6 of the water-washed toilet according to the present embodiment as viewed from obliquely above the front.

[0036] As shown in FIGS. 8 and 9, the bottom surface 32a of the second water guide path 32 on the upstream side of the second rim water outlet 26 is inclined downward by an angle θ3 from the upstream to the downstream as described above. In the present embodiment, the extension line A of the bottom surface 32a of the second water guide path 32 inclined downward intersects the vertical surface 22a of the tub portion 22 above the maximum rising water level B of the water storage surface 20 during washing.

[0037] Furthermore, as shown in FIGS. 3 and 9, the second rim water outlet 26 is formed so as to direct toward the vertical surface 22a on the left side of the tub portion 22 which is the opposite side of the second rim water outlet 26.

[0038] The water-washed toilet 1 according to the above-described present embodiment includes a first rim water outlet 24 and a second rim water outlet 26 provided in the rim portion 18, and is a toilet that performs a washing operation only with the washing water supplied from each rim water outlet. However, in the present embodiment, it is also applicable to a water-washed toilet that discharges washing water other than the rim water outlet, such as jet water discharge.

[0039] Next, the operation and effect of the water-washed toilet 1 according to the present embodiment will be described. First, in the flush toilet 1 according to the present embodiment, since an enlarged portion 36 is provided above the downstream side of the second rim water discharge port 26 of the rim portion 18 to form a space that expands along the water discharge direction from the second rim water discharge port 26, air discharged from the second rim water discharge port 26 accumulates in the space of the enlarged portion 36 to generate air pressure. Even if water splashing or water transmission occurs when washing water is discharged from the second rim water discharge port 26, water splashing and water transmission can be suppressed by the air pressure generated in the space of the enlarged portion 36.

[0040] Further, in the flush toilet 1 according to the present embodiment, since an upper surface 34 that continuously extends in the water discharge direction is provided between the enlarged portion 36 of the rim portion 18 and the second rim water discharge port 26 from the upper end of the second rim water discharge port 26, the upper surface 34 of the rim portion 18 can guide the washing water discharged from the second rim water discharge port 26 and flowing upward in the water discharge direction, and water splashing and water transmission can be further suppressed.

[0041] Further, in the flush toilet 1 according to the present embodiment, since the upper surface 32b of the second water channel 32 is inclined downward more from the upstream to the downstream than the bottom surface 32a of the second water channel 32, the washing water discharged from the second rim water discharge port 26 can be made to flow into the water storage surface earlier.

[0042] Further, in the flush toilet 1 according to the present embodiment, the upper surface 32b of the second water channel 32 includes an upstream upper surface 32c that is inclined downward at a first inclination angle θ1 and a downstream upper surface 32d that is inclined downward at a second inclination angle θ2 that is gentler than the first inclination angle θ1. Therefore, the washing water supplied to the second water channel 32 flows downward in a state where the pressure loss is suppressed by the upstream upper surface 32c and is discharged from the second rim water discharge port 26 in a state of being rectified by the downstream upper surface 32d. Thus, according to the present embodiment, water splashing and water transmission can be further suppressed, and the washing water discharged from the second rim water discharge port 26 can be made to flow into the water storage surface earlier.

[0043] In addition, in the flushing toilet 1 according to the present embodiment, since the second inclination angle θ2 of the upper surface 32d on the downstream side of the second water conduit 32 is 20 to 60 degrees with respect to the horizontal direction, the upper surface 32d on the downstream side of the second water conduit 32 rectifies the water flow while suppressing the pressure loss, and can further suppress water splashing and water transmission.

[0044] In addition, in the flushing toilet 1 according to the present embodiment, the second rim water outlet 26, when viewed from the front, has its upper end inclined downward from the inside to the outside and extending, and further, the inner height H1 is formed to be larger than the outer height H2. Therefore, it is easier to form the flow of the washing water flowing from the second rim water outlet 26 into the water storage surface 20. Also, since the outer height H2 of the second rim water outlet 26 is lower than the inner height H1, it is easier to form the space of the enlarged portion 36 outside the second rim water outlet 26. According to the present embodiment, by these means, while forming the flow of the washing water flowing into the water storage surface 20, water splashing and water transmission can be further suppressed.

[0045] In addition, in the conventional flushing toilet, the radius of curvature of the outer lower corner and the inner lower corner of the second rim water outlet is the same, and the washing water discharged from the second rim water outlet only swirls on the inner peripheral surface of the rim portion. However, in the present embodiment, the second rim water outlet 26, when viewed from the front, has its outer lower corner 26b formed with a first radius of curvature R1 and its inner lower corner 26c formed with a second radius of curvature R2, and further, the first radius of curvature R1 is formed to be larger than the second radius of curvature R2. Therefore, outside the second rim water outlet 26, the corner 26b with a large radius of curvature forms a flow with energy that allows the washing water to run up the concave portion 28 of the bowl portion 6 and fall into the water storage surface 20. Further, inside the second rim water outlet 26, the corner 26c with a small radius of curvature can discharge a gentle flow with a smaller upward run than outside the second rim water outlet 26 toward the water storage surface 20. Therefore, even when the amount of washing water discharged from the second rim water outlet 26 is increased, the washing water discharged from the second rim water outlet 26 can flow into the water storage surface 20.

[0046] In addition, in the flushing toilet 1 according to the present embodiment, since the flow path cross section of the second water conduit 32 is formed with the same curvature radius R3 for the outer lower corner 32e and the inner lower angle 32f, the washing water in the second water conduit 32 can flow toward the second rim water outlet 26 without being disturbed.

[0047] In addition, in the flushing toilet 1 according to the present embodiment, the bowl portion 6 on the downstream side of the second rim water outlet 26 is formed continuously with the outer lower corner 26b of the second rim water outlet 26, and is formed with curvature radii (R4, R5, R6) that gradually increase from the first curvature radius R1 in the water discharge direction of the washing water. Therefore, most of the washing water discharged from the second rim water outlet 26 can be guided to the water storage surface.

[0048] In addition, in the flushing toilet 1 according to the present embodiment, since the upper surface 32b of the second water conduit 32 is inclined downward from upstream to downstream, the washing water discharged from the second rim water outlet 26 can be discharged toward the water storage surface 20.

[0049] In addition, in the flushing toilet 1 according to the present embodiment, the bottom surface 32a of the second water conduit 32 is inclined downward along the water discharge direction of the washing water discharged from the second rim water outlet 26, and the extension line A of this bottom surface 32a intersects the vertical surface 22a of the tub portion 22 above the maximum rising water level B of the water storage surface 20 during washing. Therefore, the washing water discharged from the second rim water outlet 26 can be quickly introduced into the water storage surface 20, and further, the washing water can be introduced into the water storage from above the rising water storage surface 20 so as to cover it. Thus, according to the present embodiment, a vertical swirling flow can be formed in the tub portion 22, and the discharge timing of floating contaminants can be advanced.

[0050] In addition, in the flushing toilet 1 according to the present embodiment, since the second rim water outlet 26 is formed so as to face the water storage surface 20, the washing water discharged from the second rim water outlet 26 can be discharged toward the water storage surface 20.

Explanation of Reference Numerals

[0051] 1 Flushing toilet 2 Toilet body 4 Water storage tank 6 Bowl part 10 Drainage pipe 16 Waste receiving surface 18 Rim part 20 Water storage surface 22 Depression part 22a Vertical surface 24 First rim water outlet 26 Second rim water outlet 26a Upper end 26b Outer lower corner 26c Inner lower corner 28 Concave part 30 First water guide channel 32 Second water guide channel 32a Bottom surface 32b Upper surface 32c Upstream upper surface 32d Downstream upper surface 32e Outer lower corner 32f Inner lower corner 34 Upper surface 36 Enlarged part θ1, θ2, θ3 Inclination angles R1~R6 Radii of curvature H1, H2 Heights A Extension line B Maximum rising water level of water storage surface

Claims

1. A flushing toilet that discharges dirt with flushing water supplied from a flushing water source, comprising a dirt receiving surface for receiving dirt, a rim portion formed above the dirt receiving surface and having an inner peripheral surface, and a tub portion formed below the dirt receiving surface and having a water storage surface formed therein, a first water discharging portion provided on the rim portion and forming a first rim water discharging port for discharging flushing water forward along the inner peripheral surface of the rim portion, a first water guiding path for supplying the flushing water supplied from the flushing water source to the first water discharging portion, a second water discharging portion provided on the rim portion and forming a second rim water discharging port for discharging flushing water backward along the inner peripheral surface of the rim portion, a second water guiding path for supplying the flushing water supplied from the flushing water source to the second water discharging portion, and a drain pipe connected to the bottom of the bowl portion, wherein the second rim water discharging port is provided behind the water storage surface of the bowl portion and is formed to face the water storage surface, the bottom surface of the second water guiding path is inclined downward along the water discharging direction of the flushing water discharged from the second rim water discharging port, and an extension line of this bottom surface intersects a vertical surface of the tub portion above the maximum rising water level of the water storage surface during flushing, whereby the flushing water is discharged from the rear side of the tub portion toward the vertical surface of the tub portion, which is the opposite side of the rim water discharging port, from the second rim water discharging port. A flushing toilet characterized by this.

2. The flushing toilet according to claim 1, wherein the upper surface of the second water guiding path is inclined downward from upstream to downstream.

3. The flushing toilet according to claim 2, wherein the upper surface of the second water guiding path includes an upstream-side upper surface inclined downward at a first inclination angle and a downstream-side upper surface inclined downward at a second inclination angle gentler than the first inclination angle.

4. The flushing toilet according to claim 1, wherein the second water guiding path has a flow path cross section in which an outer lower corner and an inner lower corner are formed with the same radius of curvature.

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