JP2018105005A - Flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl capable of preventing splash of washing water to the bowl outside.SOLUTION: A flush toilet bowl 1 comprises a bowl 10 having a rising face part 11 formed vertically extended at an upper end part and a bowl face part 12 formed at an inner periphery side lower than a lower end of the rising face part 11, and a water discharge port 21 opened at the rising face part 11 and discharging washing water into the bowl 10. The washing water flows in at least two water streams of a main stream F1 flowing a periphery of the bowl 10 along the rising face part 11 and a branched stream F2 branched from the main stream F1 and flowing down to the bowl face part 12 side. The branched stream F2 joins into the main stream F1 at a downstream joining part J, and the main stream F1 reaches the joining part J earlier than the branched stream F2.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a flush toilet bowl.

  In Patent Document 1, a toilet bowl having an upright portion formed to extend in the vertical direction at the upper end portion and a bowl surface portion formed on the inner peripheral side lower than the lower end of the upright portion, and an opening in the upright portion. And the flush toilet bowl provided with the water outlet which discharges a washing | cleaning liquid in a toilet bowl is disclosed. In this flush toilet bowl, the wash water discharged from the spout flows through the periphery of the toilet bowl to wash the toilet bowl, and discharges filth in the toilet bowl. Moreover, the wash water flowing along the periphery of the toilet bowl gradually flows down from the periphery toward the bowl surface portion, and the surface of the bowl surface portion is also washed.

Japanese Patent Laying-Open No. 2015-68164

  In the case of the flush toilet as described above, a part of the wash water that has flowed down to the bowl surface side passes through the bowl surface part due to the water force, centrifugal force, etc., and merges again with the flow around the toilet bowl. In this case, depending on the timing and position of merging, there is a possibility that the washing water reaches a position higher than the height of the elevation and is scattered outside the toilet bowl.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the flush toilet bowl which can prevent scattering of wash water.

The flush toilet of the present invention is
A toilet bowl having a vertical surface formed on the upper end portion extending in the vertical direction and a bowl surface portion formed on the inner peripheral side lower than the lower end of the vertical surface portion;
A spout that opens in the elevation and discharges wash water into the toilet bowl;
With
The washing water flows in at least two water flows, a main flow that flows along a peripheral edge of the toilet bowl along the upright portion and a divided flow that separates from the main flow and flows down to the bowl surface portion side, and the divided flow is on the downstream side The main stream joins the main stream, and the main stream reaches the merge part earlier than the split stream.

  In this flush toilet, the wash water discharged from the outlet has two main streams, a main stream and a split stream, and these two streams merge at the downstream junction. Of the two water flows, the main flow that is a water flow along the vertical surface portion reaches the merge portion earlier than the diversion flow at the start of discharge of the washing water. For this reason, the water flow by a mainstream is formed previously in a junction part before a branch flow merges. Thereby, the branch flow which flows toward the outer peripheral direction (toilet bowl outer side direction) from the center direction of the toilet bowl can be suppressed by the main stream flowing along the toilet bowl periphery along the elevation portion.

  Therefore, the flush toilet of the present invention can prevent the washing water from splashing outside the toilet bowl.

1 is a plan view showing a flush toilet of Example 1. FIG. It is a perspective view which shows the flush toilet bowl of Example 1. FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a figure for demonstrating the effect | action of the flush toilet bowl of Example 1. FIG. It is a figure for demonstrating the effect | action of the flush toilet bowl of Example 1. FIG. It is a figure for demonstrating the effect | action of the flush toilet bowl of Example 1. FIG. It is a principal part enlarged view of FIG.

  A preferred embodiment of the present invention will be described.

  In the flush toilet of the present invention, the junction may be located on the downstream side of the region where the height of the main flow is highest on the front side of the toilet bowl. In this case, it is possible to prevent the branch flow from affecting the maximum height of the main flow. The main stream that flows around the toilet bowl flows while changing its height due to changes in the water force and the curvature of the toilet bowl. If the diversion flow merges in the region where the main flow height is the highest or upstream, it may affect the amount of water or the water flow of the diversion flow, and the height of the water flow may exceed the height of the elevation. is there. However, the influence of these can be prevented by merging the divided flows on the downstream side of the region where the height of the main flow is highest. Thereby, scattering of washing water can be prevented reliably.

  In the flush toilet of the present invention, the toilet bowl may have a recess provided at the lower end of the bowl surface portion and connected to the drain pipe. The bowl surface portion is inclined so as to drop the diverted flow after the start of discharge from the water outlet into the concave portion on an imaginary line connecting the water outlet and the region having the highest main flow height in plan view. Can be formed. In this case, since the amount of water and the water force of the component that wants to circulate on the phantom line of the diversion can be suppressed, scattering of the washing water can be reliably prevented. In addition, since the water flow and flow rate of the components that are going to circulate on the phantom line of the diversion flow can be easily adjusted according to the inclination angle of the pot surface part, the water flow and height of the water flow after merging can be easily adjusted and washed. Water scattering can be surely prevented.

  In the flush toilet of the present invention, the movement distance of the diversion flow from the main flow until reaching the confluence portion is based on the movement distance of the main flow from the diversion flow until reaching the confluence portion. Can also be set longer. In this case, the main flow can surely reach the joining portion earlier than the split flow.

<Example 1>
A first embodiment of the present invention will be described below with reference to FIGS. In the following description, with respect to the front-rear direction, the lower side in FIG. 1 and the left side in FIG. 3 are defined as the front side. Moreover, regarding the left-right direction, the directions appearing in FIG. 1 are defined as the left side and the right side as they are. The flush toilet 1 of the present embodiment includes a toilet bowl 10 and water outlets 21 and 22.

  As shown in FIGS. 1 to 3, the toilet bowl 10 has an elevation surface portion 11, a bowl surface portion 12, a shelf surface portion 13, and a recess 14. The upright portion 11 is provided at the upper end portion of the toilet bowl 10, and the surface thereof is formed to extend in the vertical direction. The upright portion 11 is formed over substantially the entire circumference of the upper end portion of the toilet bowl 10. The elevation portion 11 is formed in an annular shape that is slightly longer in the front-rear direction in plan view, and has an egg shape in which the curvature of the front portion is larger than the curvature of the rear portion. Further, the upper end surface of the upright portion 11 extends substantially horizontally in the outer direction at a substantially constant height. As described above, the flush toilet 1 is a toilet without an overhang portion projecting inward from the upper end of the upright portion 11.

  The bowl surface portion 12 is formed in a mortar shape below the inner peripheral side of the lower end of the elevation portion 11. The bowl surface portion 12 is formed to be inclined so as to become lower toward the center rear side. The shelf surface portion 13 is provided between the elevation surface portion 11 and the bowl surface portion 12 so as to connect the lower end of the elevation surface portion 11 and the upper end of the bowl surface portion 12. The shelf surface portion 13 has a surface that faces upward, and extends slightly inclined downward as it goes inward. The shelf surface portion 13 is provided on the periphery of the toilet bowl 10 excluding a part of the front, and has a substantially horseshoe shape in plan view. The concave portion 14 is formed below the bowl surface portion 12 and continues to the drain pipe 30. The recess 14 is provided continuously at the lower end of the bowl surface portion 12. The recess 14 is arranged near the rear of the substantially center of the toilet bowl 10 in the left-right direction. The recessed portion 14 is formed with water stored by washing water.

  The spouts 21 and 22 are open to the elevation part 11 of the toilet bowl 10 and discharge cleaning water into the toilet bowl 10. In the present embodiment, the water outlets 21 and 22 are provided with a first water outlet 21 and a second water outlet 22. The two spouts 21 and 22 discharge cleaning water into the toilet bowl 10 respectively. The discharged wash water circulates while turning counterclockwise on the shelf surface part 13 and the bowl surface part 12 in the toilet bowl 10, flows into the recess 14, and is discharged to the drain pipe 30.

  Specifically, the first water outlet 21 is provided to open to the left rear of the toilet bowl 10. The washing water discharged from the first water discharge port 21 is discharged forward on the shelf surface part 13, and a part thereof is a part of the mainstream F <b> 1 described later that circulates around the periphery of the toilet bowl 10 along the elevation surface part 11. The other part becomes a part of a later-described branch flow F2 that flows down from the shelf surface part 13 toward the bowl surface part 12, and the other part becomes a part of a later-described second water stream F4 that flows into the recess 14.

  The second water discharge port 22 is provided to open to the right rear of the toilet bowl 10. The wash water discharged from the second water discharge port 22 is discharged to the left and slightly forward, a part of which is merged with the wash water discharged from the first water discharge port 21, and the other part is on the bowl surface part 12 side. And part of the second water flow F4 flowing into the recess 14. In the flush toilet 1 according to this embodiment, the amount of washing water per washing is about 5 liters. The wash water is stored in advance in a tank (not shown) for one wash. The discharge flow rate of the cleaning water (water discharge amount per unit time) is substantially maximum at the start of discharge, and gradually decreases thereafter.

  As shown in FIGS. 1 and 2, in the flush toilet 1 of the present embodiment, the wash water circulates mainly in four water flows F1 to F4 in the toilet bowl 10. Among these, the main flow F <b> 1 and the diversion F <b> 2 are water flows that are discharged from the water discharge ports 21 and 22 and swirl in the toilet bowl 10. In addition, the first water flow F3 and the second water flow F4 are water flows that flow down to the recess 14.

  Wash water discharged from the water discharge ports 21 and 22 cleans the toilet bowl 10 by forming at least two water streams, a main flow F1 and a diversion F2. That is, a part of the wash water circulates by forming a main flow F1 and a branch flow F2. Among these, the main flow F <b> 1 is a water flow that flows along the peripheral surface of the toilet bowl 10 along the elevation portion 11. The diversion F2 is a water flow that is separated from the main flow F1 and flows down to the bowl surface portion 12 side. The split flow F2 joins the main flow F1 at the downstream junction J. And the wash water which makes these two water flow F1 and F2 reaches | attains the junction J faster than the main flow F1 rather than the diversion F2. Specifically, the split flow F2 is separated from the main flow F1 and flows down to the bowl surface portion 12 side to flow into the concave portion 14 while washing the surface of the bowl surface portion 12, but a part of it flows into the main flow F1 at the downstream junction J. Join. Of the main flow F1 and the diversion F2 that merge at the merge portion J, the main flow F1 that first reaches the merge portion J immediately after the start of discharge of the wash water into the toilet bowl 10 is first after the start of discharge. It reaches earlier than the diversion F2 that reaches the junction J.

  In the case of the present embodiment, such a merging form of the main flow F1 and the diversion F2 is a distance through which the diversion F2 circulates by deeply indenting the surface of the pot surface portion 12 serving as a distribution path to the merging portion J of the diversion F2. It is realized by adjusting. That is, as shown in FIGS. 3 to 5, the surface height of the portion through which the diversion F2 of the bowl surface portion 12 circulates is sufficiently deeper than the distribution height of the main flow F1 (height of the shelf surface portion 13). The moving distance of F2 is set to be long. That is, the length of the movement distance of the diversion F2 is set by using the height difference during the separation from the main flow F1 at the height of the shelf surface portion 13 and again joining the main flow F1 at the merge portion J at the height of the shelf surface portion 13. ing. In this embodiment, the movement distance of the diversion F2 from the diversion from the main flow F1 to the arrival of the merging portion J is longer than the movement distance of the main flow F1 from the diversion F2 of the diversion to the merging portion J. Is set. Moreover, by providing a height difference between the surface of the bowl surface portion 12 and the surface of the shelf surface portion 13 in this way, the water flow of the diversion F2 is weakened and the vehicle stalls. This also affects the arrival timing of the diversion F2 at the junction J.

Moreover, the junction J is located downstream of the region A where the height of the main flow F1 is highest on the front side of the toilet bowl 10. As shown in FIG. 6, in the present embodiment, the main flow F <b> 1 flowing along the peripheral surface of the toilet bowl 10 along the vertical surface portion 11 is pressed against the vertical surface surface 11 under the influence of centrifugal force. The main flow F1 circulates while changing its height in accordance with the change in the curvature of the elevation portion 11 and the flow velocity. In FIG. 6, the imaginary line indicated by the symbol M indicates a trajectory of the highest reach height indicating a position where the flow of the peripheral edge of the toilet bowl 10 flows highest on the surface of the upright portion 11 during cleaning. Among these, the region A has the highest main flow F1 on the front side of the toilet bowl 10. If the diversion F2 merges in this area A, the washing water may reach a higher position and may be scattered outside the toilet bowl 10. For this reason, in the present embodiment, the position of the merging portion J is set downstream of the region A. In the case of the present embodiment, as shown in FIG. 6, the region A in which the height of the main flow F1 is the highest is a position to the right of the front of the toilet bowl 10, so the junction J is located further downstream. It is set to do.
In addition, in a present Example, although the part which becomes the highest in the front side of the toilet bowl 10 among the flows of the periphery of the toilet bowl 10 is the area | region A where the mainstream F1 becomes the highest, it joins by the shunt F2 joining. The form where the part J becomes the highest may be sufficient.

  Such a form is realized as follows. That is, in this embodiment, as shown in FIG. 6, discharge starts from the spout 21 on a virtual line V connecting one spout 21 in a plan view and the region A where the height of the main flow F1 is the highest. The bowl surface portion 12 is inclined so that the immediately following diversion F2 is dropped into the recess 14. Specifically, as shown in FIG. 4, the inclination angles θ1 and θ2 of the surface of the bowl surface portion 12 are set to 45 ° or more (more preferably 60 ° or more). Furthermore, in the present embodiment, the inclination angle θ1 of the surface on the left side (upstream side) of the bowl surface portion 12 is made larger than the inclination angle θ2 of the surface on the right side (downstream side). Thereby, the diversion F2 which is going to flow on the virtual line V is drawn in to the recessed part 14 side, and it is suppressing that washing water reaches | attains the area | region A linearly from the 1st water discharge port 21. FIG. Further, by drawing the wash water on the imaginary line V toward the concave portion 14 side, a force that urges the counter-clockwise direction to rotate is applied to the divided flow F2 so that it is merged further downstream. In this way, in the present embodiment, it is realized that the joining portion J is located on the downstream side of the region A where the height of the main flow F1 is the highest. Further, by dropping the diversion F2 that is about to flow on the imaginary line V to the concave portion 14 side, the amount of water of the diversion F2 that reaches the merging portion J is reduced and the water flow and the flow velocity are reduced, so the diversion F2 becomes the main flow F1. The impact at the time of merging is alleviated, and the splash of washing water to the outside of the toilet bowl 10 is surely prevented.

  In addition, a component of the diversion F2 that tries to reach the region A linearly from the first outlet 21, that is, a component that enters and collides with the surface of the elevation portion 11 with a large entry angle is on the concave portion 14 side. The formation of a swirling flow is promoted by the fact that the water flows down or is weakened. Thereby, at the time of merging with the main flow F1, the diversion F2 that has become a swirling flow has a smaller entry angle with respect to the surface of the vertical surface portion 11, and smoothly merges with the main flow F1 flowing along the vertical surface portion 11. can do. For this reason, the impact at the time of the confluence | merging with the mainstream F1 and the diversion F2 is relieve | moderated more, and scattering to the exterior of the toilet bowl 10 is prevented more reliably.

  As shown in FIGS. 1 and 2, in the flush toilet 1 of this embodiment, the wash water flows into the recess 14 by forming at least two water streams, a first water stream F3 and a second water stream F4. The first water flow F3 flows into the recess 14 from the front part of the toilet bowl 10. The second water flow F <b> 4 flows into the recess 14 from the rear part of the toilet bowl 10 and turns in the vertical direction in the recess 14. Specifically, as shown in FIG. 7, the second water flow F <b> 4 that has flowed into the recess 14 from the rear of the toilet bowl 10 rolls up as an upward flow on the front side of the recess 14 and descends again on the rear side of the recess 14. It turns in the vertical direction so as to flow, and enters the drain pipe 30.

  In a region where the first water flow F3 of the bowl surface portion 12 flows down, a step portion 12A having a step in the vertical direction is formed. As shown in FIG.7 and FIG.8, the step part 12A is formed in the lower part of the bowl surface part 12, and the recessed part 14 continues in the downward direction. The step portion 12A changes the flow direction of the first water flow F3. Specifically, the stepped portion 12 </ b> A acts so that the first water flow F <b> 3 that is about to flow along the surface of the bowl surface portion 12 is separated from the surface of the bowl surface portion 12 on the downstream side. In the present embodiment, the stepped portion 12A is formed by recessing the surface of the bowl surface portion 12 into a concave shape. Further, the step portion 12 </ b> A is formed to extend in the horizontal direction along the surface of the bowl surface portion 12. That is, in this embodiment, the stepped portion 12A has a width in the horizontal direction. Thereby, it can respond to the 1st water flow F3 which spreads and drops in the horizontal direction along the surface of the bowl surface part 12, or the shift | offset | difference of a flowing-down position arises by dispersion | variation in a water force etc.

As shown in FIG. 8, below the step 12A, there is formed a flow that winds upward in the flow swirling in the vertical direction within the recess 14 of the second water flow F4. On the other hand, the first water flow F3 flows down from above the stepped portion 12A. The first water flow F3 that flows downward is changed in the flow direction by passing through the step portion 12A, and collision with the second water flow F4 is avoided. The second water flow F4 rising from below the step portion 12A descends inside the recess 14 and enters the drain pipe 30. Moreover, the flow direction of the first water flow F3 changes in substantially the same direction as the flow direction of the second water flow F4 by passing through the step portion 12A, and merges with the second water flow F4. Therefore, the second water flow F4 can enter the drain pipe 30 while maintaining the water flow. For this reason, the pushing ability of the filth from the recessed part 14 to the drain pipe 30 improves rather than the case where the 1st water flow F3 and the 2nd water flow F4 collide, and a water force weakens.
As described above, the step portion 12A has an action of separating the first water flow F3 that passes through from the surface of the bowl surface portion 12, but the entire amount does not have to be separated, and a part of the first water flow F3 that passes through the step portion 12A It may flow along the surface of the pot surface portion 12.

  Further, the first water flow F3 that has passed through the stepped portion 12A merges with the second water flow F4 in the recess 14 and enters the drain pipe 30. As described above, the flow direction of the first water flow F3 changes as it passes through the step portion 12A. As a result, the first water flow F3 is shaved off and the flow velocity is lowered, but instead the cross-sectional area is increased, the thickness is increased, and the first water flow F3 flows into the recess 14. For this reason, the pushing capability of the filth from the recessed part 14 to the drain pipe 30 improves further.

  As described above, in the flush toilet 1 of the present embodiment, the wash water discharged from the spouts 21 and 22 circulates having two water flows, the main flow F1 and the diversion F2, and these two water flows are downstream. It merges at the side junction J. Of the two water flows, the main flow F1, which is a water flow along the elevation portion 11, reaches the junction J earlier than the diversion F2 at the start of discharge of the washing water. For this reason, in the junction part J, the water flow by the main flow F1 is formed previously before the split flow F2 joins. Thereby, the shunt flowing from the center direction of the stool 10 toward the outer peripheral direction (outer stool outer side direction) can be suppressed by the main flow F <b> 1 flowing along the periphery of the stool 10.

  Therefore, the flush toilet 1 can prevent the wash water from splashing outward of the toilet bowl 10.

  In the flush toilet 1, the junction J is located on the downstream side of the region A where the height of the main flow F <b> 1 is highest on the front side of the toilet bowl 10. For this reason, it is possible to prevent the branch flow F2 from affecting the maximum height of the main flow F1. That is, the main flow F1 flowing around the periphery of the toilet bowl 10 circulates while changing the height due to changes in the water force, the curvature of the toilet bowl 10 and the like. For this reason, when the diversion F2 merges in the upstream side or the area A with respect to the area A where the height of the main flow F1 is highest, the amount of water, the water flow, etc. of the diversion F2 are affected, and the height of the water flow becomes the elevation portion 11. There is a risk of exceeding the height. However, the influence of these can be prevented by joining the branch flow F2 downstream from the region where the height of the main flow F1 is the highest. Therefore, scattering of the washing water to the outside of the toilet bowl 10 can be reliably prevented.

  In the flush toilet 1, the toilet bowl 10 has a recess 14 provided at the lower end of the bowl surface portion 12 and connected to the drain pipe 30, and the bowl surface portion 12 has a water outlet 21 and a mainstream F <b> 1 in a plan view. On the imaginary line V connecting the region A having the highest height, it is formed so as to be inclined so as to drop the diversion F2 after the discharge is started from the water discharge port 21 into the recess 14. Thereby, since it is possible to suppress the amount of water and the water force of the component to be circulated on the phantom line V2 of the diversion F2, it is possible to reliably prevent the washing water from being scattered. Moreover, since the water flow and flow rate of the component which is going to distribute | circulate on the virtual line V of the diversion F2 according to the inclination angle of the pot surface part 12 can be adjusted easily, the water flow and height of the water flow after a merge are easy. It is possible to adjust, and it is possible to reliably prevent the washing water from splashing outside the toilet bowl 10.

  Further, in the flush toilet 1, the moving distance of the diverted flow F <b> 2 from the main flow F <b> 1 to reach the confluence J is greater than the moving distance of the main flow F <b> 1 from the diversion F <b> 2 to the confluence J. Is also set longer. For this reason, the main flow F1 can be reliably reached to the junction J faster than the diversion F2.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said Example, although the form in which the step part was provided in the bowl surface part was illustrated, providing a step part is not essential. Moreover, in the said Example, although the step part illustrated the form extended in a horizontal direction along the surface of a bowl surface part, the length of the step part in this case in particular is not ask | required. Further, the extending direction of the stepped portion may be not only the horizontal direction but also a direction other than the horizontal direction including the vertical direction.
(2) In the said Example, although the toilet bowl illustrated the form which has a shelf surface part of a horseshoe shape in planar view, this is not essential. Further, when the toilet bowl has a shelf surface portion, it is formed not only in the above-described form, but also, for example, is formed over the entire circumference of the toilet bowl, or in a narrower range such as a substantially semicircular shape in plan view. It may be other forms such as
(3) In the above embodiment, the overhang portion that protrudes inward from the upper end of the elevation portion is not provided. However, the overhang portion is formed on a part of the upper end of the toilet bowl or over the entire circumference. It may be.
(4) In the said Example, although the form provided with two water outlets was illustrated, one or three or more water outlets may be provided. When a plurality of water discharge ports are provided, the second water discharge port may not be a water discharge port that generates a swirling flow. For example, a spout that discharges water only downward may be used.
(5) In the said Example, although the spout was arrange | positioned in the back side of the toilet bowl, the position of a spout is not specifically limited. Moreover, the discharge direction of the wash water from the spout and the turning direction in the toilet bowl are not limited.
(6) In the above embodiment, in order to position the confluence on the downstream side of the region where the main flow height is the highest, on the virtual line connecting the water discharge port and the region where the main flow height is the highest, Although the embodiment in which the bowl surface portion is inclined so as to drop the diverted flow after the start of discharge into the recess is exemplified, other embodiments may be used. In addition, it is not essential to position the merging portion on the downstream side of the region having the highest main flow height.
(7) In the above embodiment, the step portion formed by recessing the surface of the bowl surface portion is illustrated, but the step portion may be formed by protruding the surface of the bowl surface portion in a convex shape.
(8) In the above-described embodiment, the movement distance of the divided flow from the diversion from the main flow to the arrival at the merge portion is set longer than the main flow movement distance from the diversion to the arrival at the merge portion. However, this is not essential.
(9) In the above-described embodiment, the configuration in which the concave portion is continuous below the stepped portion is illustrated, but the present invention is not limited to this. The stepped portion may be formed at a position separated from the concave portion above the lower end of the bowl surface portion as long as the first water flow is separated from the surface of the bowl surface portion and flows into the concave portion.

DESCRIPTION OF SYMBOLS 1 ... Flush toilet 10 ... Toilet bowl 11 ... Elevation part 12 ... Bowl surface part 12A ... Step part 13 ... Shelf surface part 14 ... Recessed part 21, 22 ... Water outlet (21 ... 1st water outlet, 22 ... 2nd water outlet)
30 ... Drainage pipe A ... Region where the height of the main flow is the highest F1 ... Main flow F2 ... Split flow F3 ... First water flow F4 ... Second water flow J ... Confluence M: Trajectory of the highest reached height at the vertical surface V ... Virtual lines connecting the spout and the area where the height of the main stream is the highest θ1, θ2 ... Inclination angle of the bowl surface

Claims (4)

A toilet bowl having a vertical surface formed on the upper end portion extending in the vertical direction and a bowl surface portion formed on the inner peripheral side lower than the lower end of the vertical surface portion;
A spout that opens in the elevation and discharges wash water into the toilet bowl;
With
The washing water flows in at least two water flows, a main flow that flows along a peripheral edge of the toilet bowl along the upright portion and a divided flow that separates from the main flow and flows down to the bowl surface portion side, and the divided flow is on the downstream side The flush toilet is characterized in that it merges with the main stream at the merge section, and the main stream reaches the merge section earlier than the divided stream.   2. The flush toilet according to claim 1, wherein the merging portion is located downstream of a region where the height of the main flow is highest on the front side of the toilet bowl. The toilet bowl has a recess that is connected to the drain pipe from the lower end of the bowl surface part,
The bowl surface portion is formed on an imaginary line connecting the water outlet in the plan view and the region having the highest main flow height so as to be inclined so as to drop the diverted flow from the water outlet into the recess. The flush toilet according to claim 1 or 2, wherein the flush toilet bowl is provided.   The moving distance of the diverted flow from the diverted flow from the main flow to the merging portion is set to be longer than the moving distance of the main flow from the diverted flow to the merging portion. The flush toilet bowl according to any one of claims 1 to 3.

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