JP2015068123A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet comfortably usable by a user, by reducing water splashing by collision of wash water.SOLUTION: A water closet comprises a bowl part 6 having a dirt receiving surface 20 and a rim part 22, a drain trap pipeline, and wash water supply means 12. The dirt receiving surface 20 of the bowl part 6 comprises an upper dirt receiving surface and a recessed part 26. The wash water supply means 12 comprises first water discharge ports 34a and 34b for forming a first flow of the wash water toward the inside of the recessed part 26 from a front area 24a of the upper dirt receiving surface, a second water discharge port 36 for forming a second flow of the wash water toward the inside of the recessed part 26 from a rear area 24c of the upper dirt receiving surface, and third water discharge ports 38a, 38b, 38c and 38d for forming a third flow of the wash water toward the inside of the recessed part 26 from both right and left sides of the second water discharge port 36. The direction of the second water discharge port and the third water discharge port is set so that the wash water discharged from the second water discharge port and the third water discharge port flows into the recessed part from the rear area of the upper dirt receiving surface.

Description

  The present invention relates to a flush toilet, and more particularly, to a flush toilet such as a wash-off type that flushes toilets with wash water supplied from a wash water supply source and discharges filth.

  For example, as disclosed in Patent Document 1, the water supply pipe of the flush toilet is branched to the left and right, and each of the branched pipes branched to the left and right is provided with a water discharge hole and a water diversion hole. In addition, a flush toilet is known in which each of the water diversion holes discharges a plurality of flows of washing water in different directions to improve the washing power of the bowl portion by combining the flux and the swirling flow.

JP-A-8-120740

  However, in the flush toilet of Patent Document 1, opposing fluxes are formed on the inner peripheral surface of the toilet bowl, and two swirl flows in the forward direction and the backward direction so as to cross these fluxes. Therefore, there is a problem that the cleaning water collides on the inner peripheral surface to cause water splashing, and the cleaning water adheres to the user and gives the user an unpleasant feeling.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and can prevent water splashing due to a collision of washing water, and can be used comfortably by the user. The purpose is to provide a toilet.

In order to achieve the above object, the present invention is a flush toilet that flushes toilets with washing water supplied from a washing water supply source and discharges wastes, and has a bowl-shaped waste receiving surface and the wastes. A rim portion formed on the upper edge of the receiving surface and having a rim water passage formed along the inside thereof, and a drain trap pipe for discharging filth with an inlet connected to the lower portion of the bowl portion A cleaning water supply means for supplying cleaning water to the bowl portion, and the waste receiving surface of the bowl portion includes an upper waste receiving surface connected to the rim portion, and a drain trap from the inside of the upper waste receiving surface. And a cleaning water supply means is disposed on the rim water passages at the rear of the left and right sides of the bowl portion, and discharges the cleaning water to the left and right rim water passages to allow the rim to pass through. Guide along the water channel to the front of the bowl, A first water outlet that forms a first flow of wash water from the front area of the surface into the recess, and a substantially center in the left-right direction behind the bowl portion, and the wash water is discharged toward the recess A second spout for forming a second flow of wash water from the rear region of the upper dirt receiving surface into the recess, and the right and left sides of the second spout at the rear of the bowl portion, toward the recess And a third water outlet that forms a third flow of cleaning water from the left and right sides of the second water outlet toward the inside of the recess, and the second water outlet and the third water outlet. The direction of the 2nd water outlet and the 3rd water outlet is set so that the wash water discharged from the water outlet may flow into the recess from the rear region of the upper waste receiving surface.
In the present invention configured as described above, the second water discharge port forms a second flow of washing water from the rear region of the upper filth receiving surface into the recess, and the third water discharge port is the second water discharge port. Since the third flow of the cleaning water from the left and right sides of the water port into the recess is formed, and the first water discharge port forms the first flow of the cleaning water from the front region of the upper waste receiving surface into the recess. It is possible to prevent the cleaning water discharged from the second water outlet and the third water outlet from colliding with the cleaning water discharged from the first water outlet in the front region of the upper waste receiving surface. Therefore, according to the present invention, water splash due to collision of cleaning water can be suppressed, and the user can use it comfortably.

In the present invention, preferably, the front region of the upper waste receiving surface has an inclined surface having an inclination angle in the range of 22.5 degrees to 32.5 degrees so as to suppress the lateral expansion of the flowing wash water. Prepare.
In the present invention configured as described above, the wash water discharged from the first water discharge port can be prevented from spreading in the left-right direction in the front region of the upper waste receiving surface, and the front of the upper waste receiving surface. It becomes easy to converge the flow of cleaning water from the region into the recess into the recess. Therefore, according to the present invention, the cleaning water discharged from the second water outlet and the third water outlet collides with the cleaning water discharged from the first water outlet in the front region of the upper waste receiving surface. Can be effectively suppressed, thereby preventing water splashing due to the collision of the washing water, and the user can use it comfortably.

In this invention, Preferably, the recessed part of the filth receiving surface of a bowl part forms the water storage surface of a predetermined area.
In the present invention configured as described above, since the concave portion forms a water storage surface having a predetermined area, the cleaning water discharged from the second water discharge port can be easily introduced into the concave portion from the rear region of the upper waste receiving surface. The cleaning water discharged from the third water outlet can easily flow into the recess from the left and right sides of the second water outlet, and the water discharged from the first water outlet. Water can easily flow into the recess from the front area of the upper waste receiving surface. Therefore, it effectively suppresses that the wash water discharged from the second water discharge port and the third water discharge port collides with the wash water discharged from the first water discharge port in the front region of the upper waste receiving surface. be able to. Therefore, according to the present invention, water splash due to collision of cleaning water can be suppressed, and the user can use it comfortably.

In the present invention, preferably, the cleaning water supply means stores the supplied cleaning water, has a tank having a drain port formed on the bottom surface, and discharges the cleaning water supplied from the tank. And a water discharge part formed with a second water discharge port and a third water discharge port.
In this invention comprised in this way, the direction of a 1st water outlet, a 2nd water outlet, and a 3rd water outlet can be correctly set by a water discharging part. Therefore, the direction of the first flow of the wash water discharged from the first water outlet, the direction of the second flow of the wash water discharged from the second water outlet, and the wash discharged from the third water outlet It can suppress that the direction of the 3rd flow of water varies. Therefore, according to the present invention, it is possible to effectively suppress water splash due to the collision of the cleaning water.

In the present invention, preferably, the rim portion of the bowl portion includes an upper edge portion extending horizontally inward from the upper edge of the upper waste receiving surface, and a hanging wall portion depending from the upper edge, and the hanging wall portion. The height of the hanging wall is formed so that at least the rear side covers the horizontal inner side of the water discharger.
In the present invention configured as described above, when a part of the cleaning water discharged from the water discharging part is discharged to the inner side in the horizontal direction, the cleaning water is collided with the hanging wall part, the direction is changed, and the concave part Can lead to Therefore, according to the present invention, water splash can be suppressed.

In the present invention, preferably, the second water outlet of the cleaning water supply means is formed in a slit shape extending in the lateral direction, and the third water outlet of the cleaning water supply means is on both the left and right sides of the second water outlet. It is formed in the shape of two holes each arranged.
In the present invention configured as described above, the second water discharge port formed in the slit shape extending in the lateral direction forms a second flow of cleaning water from the rear region of the upper filth receiving surface into the recess, The third water discharge ports formed in the shape of two holes respectively arranged on the left and right sides of the second water discharge port cause the third flow of wash water from the left and right sides of the second water discharge port toward the recesses. Each is formed, and the first water outlet forms a first flow of cleaning water from the front region of the upper waste receiving surface into the recess. Therefore, compared with the case where the third water discharge port is formed in the shape of one hole on each of the left and right sides of the second water discharge port, for example, the left and right sides in the rear region of the upper filth receiving surface are each formed by two holes. It is possible to form a linear flow that is prevented from spreading in the direction, and the wash water discharged from the third water discharge port is the front region of the wash water discharged from the first water discharge port and the upper waste receiving surface. It is possible to suppress a collision at Therefore, according to the present invention, water splash due to collision of cleaning water can be suppressed, and the user can use it comfortably.

In the present invention, the flush toilet is preferably a wash-out flush toilet.
In the present invention configured as described above, in the flush toilet flushing apparatus in which filth is washed away by flowing water due to the water drop in the bowl portion, it is possible to suppress water splashing due to the collision of the washing water. Can be used comfortably.

  According to the flush toilet of the present invention, water splash due to collision of washing water can be suppressed, and the user can use it comfortably.

It is the schematic which shows the inside of a wall roughly in the state in which the flush toilet bowl by one Embodiment of this invention is installed in the wall. It is a top view of the flush toilet according to one embodiment of the present invention. It is sectional drawing seen along the III-III line of FIG. It is sectional drawing seen along the IV-IV line of FIG. It is a front view which shows the water discharging part of the flush toilet bowl by one Embodiment of this invention. It is a figure which shows the flow of 2nd mainstream F2 and 3rd mainstream F3a, F3b, F3c, and F3d which flow into a recessed part in the state immediately after starting washing | cleaning operation | movement in the flush toilet bowl by one Embodiment of this invention. In the flush toilet according to the embodiment of the present invention, the first mainstream F2 and the third mainstream F3a, F3b, F3c, and F3d that flow into the concave portion in the state where the cleaning operation is performed It is a figure which shows the flow of the mainstream F1.

Hereinafter, a configuration of a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic view schematically showing the inside of a wall in a state where a flush toilet according to an embodiment of the present invention is installed on the wall, and FIG. 2 is a plan view of the flush toilet according to an embodiment of the present invention. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

  As shown in FIGS. 1 to 4, reference numeral 1 is a so-called wash-out type flush toilet, in which filth is washed away by flowing water due to a drop of water in the bowl portion. This flush toilet 1 is a ceramic toilet The toilet body 2 is a so-called wall-mounted flush toilet attached to the front surface of the wall 4. A bowl portion 6 is formed on the front side of the upper portion of the toilet body 2, and the rear side A water conduit 8 is formed in the upper part of the water pipe, and a drain trap pipe 10 having an inlet connected to the bowl portion 6 so as to communicate with the bowl portion 6 is formed below the water conduit 8. Furthermore, the toilet body 2 can be applied to resin toilets other than ceramic toilets.

The flush toilet 1 further includes washing water supply means 12 for supplying washing water to the bowl portion. The washing water supply means 12 stores a washing water 14 for storing the washing water and draining it into the toilet bowl, and a storage tank 14. And a water discharge part 16 for discharging the wash water discharged from the toilet body 2 to the toilet body 2.
The water storage tank 14 of the cleaning water supply means 12 for supplying the cleaning water to the bowl portion 6 is not only a gravity water supply type water storage tank as in the present embodiment, but also a cleaning water supply means using a direct supply pressure of tap water. It may be a washing water supply means having a structure that is supplemented by a pump.

The water storage tank 14 is attached to the inside of the back side of the wall 4 to which the toilet body 2 is attached. The water storage tank 14 is formed on the floor surface of the water storage tank 14 and a controller (not shown) for controlling the water storage tank 14. A drainage valve (not shown) for opening and closing the drainage port (not shown) is provided. When the user operates the operation button 18 provided on the wall 4, a controller (not shown) opens a drain valve (not shown) so that washing water is supplied to the water conduit 8 of the toilet body 2. It has become. The water storage tank 14 can supply a cleaning water amount of 6 liters for large cleaning and 3 liters for small cleaning, for example.
As will be described in detail later, the water discharge unit 16 discharges the wash water supplied from the water conduit 8 of the toilet body 2 onto the bowl 6 of the toilet body 2.

The bowl portion 6 includes a filth receiving surface 20 formed in a bowl shape, and a rim portion 22 formed on the upper edge of the entire circumference of the bowl portion 6.
The filth receiving surface 20 has an upper upper filth receiving surface 24 connected to the rim portion 22, and a recess 26 connected to the lower drain trap pipe 10 from the inside of the upper filth receiving surface 24. ing. Below the recess 26, the inlet 10a of the drain trap pipe 10 described above is opened, and the rear end of the drain trap pipe 10 is a drain provided on the back side of the wall 4 via a drain socket (not shown). Connected to the tube 28.

The upper filth receiving surface 24 of the filth receiving surface 20 has a front region 24a on the front side of the upper filth receiving surface 24, a side region 24b on the side thereof, and a rear region 24c on the rear side thereof. Yes.
The concave portion 26 of the filth receiving surface 20 is formed so as to gradually narrow the opening area of the flow path from the inside of the upper filth receiving surface 24 to the lower drain trap pipe 10.
The concave portion 26 functions as a water storage portion, and the water stored in the bowl portion 6 forms a water storage surface W ₀ in the concave portion 26. The wash water discharged from the first water outlet, the second water outlet, and the third water outlet, which will be described later, flows from above the water surface W ₀ of the concave portion 26, so that the water stored in the concave portion 26 is reduced. It is designed to be discharged with filth while stirring.

The recess 26 traverses the streamline direction of the wash water discharged from the second water discharge port 36 described later, and the flow line direction of the wash water discharged from the third water discharge ports 38a, 38b, 38c, and 38d described later. In addition, a relatively large water surface W ₀ is formed. More specifically, the recess 26 is formed such that the longitudinal side 26a in the front-rear direction has a length of 120 mm to 140 mm, and the lateral side 26b in the left-right direction has a length of 95 mm to 115 mm. Yes. The area of the stored water surface W ₀ in the recess 26 is approximately calculated by the length of the vertical side 26a × the length of the horizontal side 26b. The recess 26 has an opening area that crosses the flow direction of the wash water discharged from the second water discharge port 36 and the flow line direction of the wash water discharged from the third water discharge ports 38a, 38b, 38c, and 38d. It is formed to have.

The rim portion 22 is formed above the upper filth receiving surface 24, and extends vertically from the upper edge 24d of the upper filth receiving surface 24 in the horizontal direction, and the drooping depending from the inner end of the upper edge 22a. A wall portion 22b, and a rim water passage 22c is formed by an internal space formed between the upper waste receiving surface 24, the upper edge portion 22a, and the hanging wall portion 22b. The rim water passage 22 c is formed along the inner peripheral surface 24 e of the upper part of the upper filth receiving surface 24 on the back side of the hanging wall portion 22 b.
The suspended wall portion 22b is formed such that the wall to be suspended is at a height such that at least the rear side covers the front of the water discharge portion 16. More specifically, the height of the hanging wall is the height h1 on the front side of the toilet. The height of the hanging wall is formed so as to gradually increase from the front side toward the rear side. The height of the hanging wall is a height h2 on the rear side. The drooping wall portion 22 b is formed at a height that covers the inner side in the horizontal direction of each water outlet of the water discharge portion 16.

Next, the water discharger 16 described above will be described in detail with reference to FIGS.
FIG. 5 is a front view showing a water discharge part of a flush toilet according to an embodiment of the present invention.

  The water discharger 16 includes an inlet 30 connected to the water conduit 8, a distribution channel 32 that distributes the wash water flowing into the inlet 30 to each water outlet, and a rim water passage 22 c at the left and right rear of the bowl 6. The first water outlets 34a and 34b that are disposed above and discharge water to the left and right rim water passages 22c, and are disposed at substantially the center in the left-right direction behind the bowl portion 6, and the cleaning water is directed toward the recess 26. A second water discharge port 36 for discharging water, and third water discharge ports 38 a, 38 b, 38 c, which are arranged on the left and right sides of the second water discharge port 36 behind the bowl portion 6, and discharge the cleaning water toward the recess 26. 38d.

  The first water outlets 34 a and 34 b are disposed on the rim water passage 22 c behind the left and right sides of the bowl portion 6 and discharge water toward the front of the toilet body 2. The distribution channel 32 is gradually narrowed before reaching the first water outlets 34a, 34b, and is opened toward the front of the toilet at the first water outlets 34a, 34b. The water outlets 34a and 34b can discharge a relatively large flow of cleaning water forward.

The 2nd spout 36 is formed in the rectangular slit shape extended in a horizontal direction, and is arrange | positioned so that the front of the toilet bowl body 2 may be pointed.
The third water discharge ports 38 a, 38 b, 38 c, 38 d are formed in two hole shapes respectively arranged on the left and right sides of the second water discharge port 36, and are arranged so as to face the inside of the recess 26. .
The third water outlet 38a is disposed at a fixed distance from the center line C of the toilet body 2 at the left rear as viewed from the front of the bowl portion 6, and the third water outlet 38b is more than the third water outlet 38a. It is arranged outside a certain distance. The third water outlet 38c is arranged at a fixed distance with respect to the center line C of the toilet body 2 on the right side when viewed from the front of the bowl portion 6, and the third water outlet 38d is more constant than the third water outlet 38c. It is arranged outside the distance. Here, the 3rd water outlet 38a and the 3rd water outlet 38c are arrange | positioned in the left-right symmetric position with respect to the centerline C, and the 3rd water outlet 38b and the 3rd water outlet 38d are center. They are arranged at positions symmetrical to the line C.
In addition, the 3rd water discharge port 38a and the 3rd water discharge port 38b are integrated and formed as one opening, and the 3rd mainstream which flows in into the recessed part 26 from one left 3rd water discharge port substantially linearly. Furthermore, the third water outlet 38c and the third water outlet 38d are integrated to form one opening, and the inside of the recess 26 is substantially linear from the one third water outlet on the right side. A third mainstream flowing into the can be formed. That is, the number of the third water outlets can be changed to a plurality of one or more on the left and right.

The front area 24a of the upper dirt receiving surface 24 forms an inclination angle α in the range of 22.5 degrees to 32.5 degrees. By the inclination angle α of the front region 24a, it is possible to suppress the lateral expansion of the washing water flowing down.
As shown in FIG. 6, the inclination angle α of the front region 24a is perpendicular to the line L1 connecting the upper front edge 24g of the front region 24a and the lower portion 24f of the front region 24a and the upper front edge 24g of the front region 24a. It is defined by the angle between the line L2 extending in the direction. By setting the inclination angle α of the inclined surface of the front region 24a of the upper filth receiving surface 24 to a relatively acute angle, such as in the range of 22.5 degrees to 32.5 degrees, water is discharged from the first water outlet 34a on the left side. After the collision of the washed water and the washed water discharged from the first water outlet 34b on the right side in the front region 24a of the upper filth receiving surface 24, it is suppressed from spreading to the left and right on the front region 24a, It flows straight downstream along the inclined surface of the front region 24a and can flow linearly from the front region 24a into the recess 26.

Next, the operation (action) of the flush toilet according to one embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is a diagram illustrating flows of the second main flow F2 and the third main flows F3a, F3b, F3c, and F3d that flow into the recesses immediately after the start of the cleaning operation in the flush toilet according to the embodiment of the present invention. FIG. 7 illustrates a concave portion with respect to the flow of the second main flow F2 and the third main flows F3a, F3b, F3c, and F3d flowing into the concave portion in a state where the washing operation is performed in the flush toilet according to the embodiment of the present invention. It is a figure which shows the flow of the 1st mainstream F1 which flows into.
Here, in FIGS. 6 and 7, the direction of the first main flow (first flow) of the wash water discharged from the first water discharge ports 34a and 34b is indicated by an arrow F1, and the second water discharge port 36 is shown. The direction of the second main flow (second flow) of the wash water discharged from the second is indicated by an arrow F2, and the third main flow (second flow of the wash water discharged from the third water discharge ports 38a, 38b, 38c, 38d) 3) is indicated by arrows F3a, F3b, F3c, and F3d.

  First, when the user operates the operation button 18 for starting toilet cleaning, a drain valve (not shown) provided in the water storage tank 14 is opened, and the cleaning water in the water storage tank 14 flows into the water conduit 8 of the toilet body 2. Flow into. The wash water that has flowed into the water conduit 8 flows into the distribution channel 32 from the inlet portion 30 of the water discharge portion 16, and the first water discharge ports 34a and 34b, the second water discharge ports 36, and the third water discharge ports 38a and 38b. , 38c, and 38d, water is discharged into the bowl portion 6.

The wash water discharged from the first water discharge ports 34a and 34b forms a first main flow F1 in front of the bowl portion along the left and right rim water passages 22c. A part of the washing water discharged from the first water outlets 34 a and 34 b flows down to the side region 24 b of the upper waste receiving surface 24 before reaching the front end 6 a of the bowl 6, and enters the recess 26. Flowing.
The wash water discharged from the second water discharge port 36 forms a second main flow F2 that flows linearly forward on the rear region 24c.
The washing water discharged from the third water outlets 38a, 38b, 38c, 38d flows in the direction of the recess 26 through the left and right side sides of the rear region 24c and / or the rear side of the side region 24b, and the center line. A third main flow F3a, F3b, F3c, and F3d that linearly flows obliquely forward with respect to C is formed.

The first main flow F1 discharged from the first water discharge ports 34a and 34b collides from the left and right sides at the front end portion 6a of the bowl portion 6, is changed in the rearward direction, and from the front region 24a of the upper dirt receiving surface 24. A backward flow toward the rear concave portion 26 is formed, and flows from the front of the concave portion 26 into the water storage surface W ₀ in the concave portion 26.
Accordingly, the first main flow F1 discharged from the first water discharge ports 34a and 34b mainly flows backward in the front region 24a and mainly cleans the front region 24a.

The first main flow F1 that has collided at the front end 6a of the bowl portion 6 is prevented from spreading outward in the left-right direction after the collision by the front region 24a having a predetermined inclination angle α, and the front region 24a is set to the center line C. Along the flow toward the recess 26.
Therefore, since it flows into the recessed part 26 from the comparatively center vicinity of the front area | region 24a, in the front area | region 24a, the 2nd main flow F2 discharged from the 2nd water outlet 36, and the 3rd water outlet 38a, 38b mentioned later , 38c, 38d can be prevented from colliding with the third main flow F3a, F3b, F3c, F3d discharged.

The second main flow F2 is of the water discharge by wash water from the second water outlet 36, it flows through the forward facing on the rear region 24c, and flows from the rear of the recess 26 in the reservoir water W ₀ in the recess 26.
For example, when a part of the wash water discharged from the second water discharge port 36 jumps out to the front upper space, the wash water collides with the back surface 22d of the drooping wall portion 22b, falls to the rear region 24c, and is recessed 26. Flows in. Therefore, it is possible to suppress a part of the cleaning water discharged from the second water discharge port 36 from jumping forward to collide with other cleaning water and causing water splash.

The third main flow F3a of the wash water discharged from the third water discharge port 38a forms a flow that flows into the central region 26c of the recess 26 from the rear left inner side of the toilet body 2 in a substantially straight line. The third main flow F3b of the wash water discharged from the third water discharge port 38b forms a flow that flows into the concave front side region 26d of the concave portion 26 from the left rear outer side of the toilet body 2 in a substantially straight line. The third main flow F3c of the wash water discharged from the third water discharge port 38c forms a flow that flows into the central region 26c of the recess 26 in a straight line from the right rear inner side of the toilet body 2. The third main flow F3d of the wash water discharged from the third water discharge port 38d forms a flow that flows into the concave front side region 26d of the concave portion 26 from the right rear outer side of the toilet body 2 in a substantially straight line. Therefore, the main flow of cleaning water discharged from the third water discharge ports 38a, 38b, 38c, and 38d mainly cleans the side region 24b and the rear region 24c.
As described above, the third water discharge ports 38a, 38b, 38c, and 38d form two water discharge ports (two holes) on the left and right, respectively, so that the filth receiving surface is sufficiently cleaned. However, for example, compared with the case where the third water discharge port is formed in one hole shape on each of the left and right sides of the second water discharge port, the diffusion component of the flow in the left-right direction and the front-rear direction is suppressed and linear. A flow flowing in the recess 26 can be formed.

The longitudinal side 26a in the front-rear direction of the recess 26 is formed to be relatively long, the lateral side 26b in the width direction is formed to be relatively long, and the opening area (reservoir surface area) of the recess 26 is formed to be relatively large. Accordingly, the third main flow F3a of the cleaning water easily flows into the recess 26, and the third main flow F3c of the cleaning water easily flows into the recess 26 similarly. The third main flow F3b of the cleaning water is easy to flow into the concave portion 26, and the third main flow F3d of the cleaning water is easy to flow into the concave portion 26 as well. Accordingly, the wash water discharged from the third water discharge port 38a, the wash water discharged from the third water discharge port 38b disposed away from the third water discharge port 38a by a predetermined distance, and the third water discharge port It is possible to prevent the cleaning water discharged from 38c and the cleaning water discharged from the third water outlet 38d disposed away from the third water outlet 38c by a predetermined distance from flowing into the front region 24a. The third main flow F3a, F3b, F3c, and F3d can flow into the recess 26 while cleaning a relatively wide area. The first main flows F1, F2 and F3a, F3b, F3c, F3d of the washing water flow into the water storage surface W ₀ along the relatively steep downward slope of the recess 26 when entering the recess 26.

The first main flow F1 of the wash water mainly flows backward in the front region 24a, and the third main flow F3a, F3b, F3c, and F3d of the wash water mainly faces the side region 24b and the rear region 24c forward. The second main flow F2 of the washing water flows mainly forward in the rear region 24c.
Accordingly, the entire filth receiving surface 20 (the front region 24a, the side region 24b, and the rear region 24c) of the bowl portion 6 of the cleaning water is made into the first main flow F1, the second main flow F2, and the third main flows F3a and F3b. , F3c, and F3d can be efficiently cleaned. At this time, the third main flow F3a, F3b, F3c, F3d, and F2 of the front-facing washing water is prevented from colliding frontward with the first main flow F1 of the rear-facing washing water on the front region 24a. .
The first main flow F1 of the cleaning water, the second main flow F2 of the cleaning water, and the third main flows F3a, F3b, F3c, and F3d of the cleaning water collide while flowing down in the recess 26, so that the cleaning water It is possible to reduce the occurrence of water splashing on the user due to collision on the upper dirt receiving surface 24.

Thus, the wash water discharged from the first water discharge ports 34a and 34b, the wash water discharged from the second water discharge port 36, and the water discharged from the third water discharge ports 38a, 38b, 38c, and 38d. In a state where the washing water is rectified on the filth receiving surface 20, the sewage receiving surface 20 is sufficiently washed to flow down so as to prevent collision of the water flow, and a downward flow falling to the recess 26 is formed. .
These flows form a flow for effectively discharging filth from the inlet 10 a of the drain trap pipe 10 below the recess 26. When the cleaning water discharges the filth from the drain trap pipe 10 and the cleaning water in the water storage tank 14 is drained to a certain amount, the operation device (not shown) provided in the water storage tank 14 finishes the draining operation. Then, an operation of supplying cleaning water into the water storage tank 14 is performed, and a series of cleaning operations is completed.

  According to the flush toilet 1 according to the embodiment of the present invention described above, the second water discharge port 36 forms the second flow F2 of washing water from the rear region 24c of the upper waste receiving surface 24 into the recess 26, The third water discharge ports 38a, 38b, 38c, and 38d form a third flow F3a, F3b, F3c, and F3d of the cleaning water that flows from the left and right sides of the second water discharge port 36 into the recess 26, and the first water discharge Since the water ports 34a and 34b form a flow of washing water from the front region 24a of the upper waste receiving surface 24 into the recess 26, water is discharged from the second water outlet 36 and the third water outlets 38a, 38b, 38c and 38d. The washed water that has been discharged from the first water outlets 34 a and 34 b can be prevented from colliding with the front region 24 a of the upper dirt receiving surface 24. Therefore, according to the flush toilet 1 of the present invention, water splash due to the collision of the washing water can be suppressed, and the user can use it comfortably.

  Moreover, according to the flush toilet 1 by embodiment of this invention mentioned above, it is that the wash water sprinkled from the 1st spout 34a, 34b spreads in the left-right direction in the front area | region 24a of the upper waste-receiving surface 24. It is possible to suppress the flow of the cleaning water from the front region 24 a of the upper dirt receiving surface 24 into the recess 26, and to easily converge the recess 26. Therefore, according to the flush toilet 1 of the present invention, the wash water discharged from the second water outlet 36 and the third water outlet 38a, 38b, 38c, 38d is discharged from the first water outlet 34a, 34b. It is possible to effectively suppress collision of the washed water with the front region 24a of the upper dirt receiving surface 24, thereby suppressing water splash due to the collision of the washing water. The toilet 1 can be used comfortably.

Further, according to the flush toilet 1 according to the above-described embodiment of the present invention, the recessed portion 26 forms the water storage surface W ₀ having a predetermined area, so that the wash water discharged from the second water discharge port 36 is upward. Wash water discharged from the third water outlets 38 a, 38 b, 38 c, and 38 d can easily flow into the recess 26 from the rear region 24 c of the filth receiving surface 24, and the right and left sides of the second water outlet 36. The cleaning water discharged from the first water discharge ports 34a and 34b can easily flow into the concave portion 26 from the front region 24a of the upper filth receiving surface 24. . Therefore, the wash water discharged from the second water discharge port 36 and the third water discharge ports 38a, 38b, 38c, 38d is the wash water discharged from the first water discharge ports 34a, 34b and the upper waste receiving surface 24. It is possible to effectively suppress the collision in the front region 24a. Therefore, according to the flush toilet 1 of the present invention, water splash due to the collision of the washing water can be suppressed, and the user can use it comfortably.

  Moreover, according to the flush toilet 1 by embodiment of this invention mentioned above, the 1st water outlet 34a, 34b, the 2nd water outlet 36, and the 3rd water outlet 38a, 38b, 38c, 38d by the water discharging part 16. Can be set accurately. Therefore, the direction of the flow of the cleaning water discharged from the first water outlets 34a, 34b, the direction of the flow of the cleaning water discharged from the second water outlet 36, and the third water outlets 38a, 38b, 38c, 38d. It is possible to suppress the variation in the direction of the flow of the washing water discharged from the water. Therefore, according to the flush toilet 1 of the present invention, it is possible to effectively suppress water splash due to the collision of the washing water.

  Further, according to the flush toilet according to the above-described embodiment of the present invention, when a part of the wash water discharged from the water discharge part 16 is discharged to the inside in the horizontal direction, the wash water collides with the hanging wall part 22b. The direction can be changed and guided toward the recess 26. Therefore, according to the flush toilet 1 of the present invention, water splash can be suppressed.

  Further, according to the flush toilet according to the above-described embodiment of the present invention, the second water discharge port 36 formed in the slit shape extending in the lateral direction is washed from the rear region 24c of the upper waste receiving surface 24 into the recess 26. The third water outlets 38a, 38b, 38c, and 38d that form the second flow F2 of water and are formed in two holes each disposed on the left and right sides of the second water outlet 36 are the second. The third flow F3a, F3b, F3c, and F3d of the cleaning water from both the left and right sides of the water discharge port 36 into the recess 26 is formed, respectively, and the first water discharge ports 34a and 34b are the front region 24a of the upper filth receiving surface 24. A flow of cleaning water is formed toward the inside of the recess 26. Therefore, compared with the case where the third water discharge port is formed in one hole shape on each of the left and right sides of the second water discharge port, for example, the rear region 24c of the upper filth receiving surface 24 by two holes each. In this case, it is possible to form a linear flow that is prevented from spreading in the left-right direction, and the wash water discharged from the third water discharge ports 38a, 38b, 38c, 38d is discharged from the first water discharge ports 34a, 34b. It is possible to suppress a collision between the washed water and the front region 24 a of the upper waste receiving surface 24. Therefore, according to the flush toilet 1 of the present invention, water splash due to the collision of the washing water can be suppressed, and the user can use it comfortably.

  Moreover, according to the wash-out type flush toilet 1 according to the above-described embodiment of the present invention, in the wash-out type flush toilet 1 in which the filth is washed away by the flowing water action caused by the water drop in the bowl portion 6, Can be suppressed, and can be used comfortably by the user.

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet bowl body 6 Bowl part 12 Washing water supply means 14 Water storage tank 16 Water discharge part 22 Rim part 22b Hanging wall part 24 Upper filth receiving surface 24a Front area 24c Rear area 26 Recess 34a 1st water outlet 34b 1st Water outlet 36 Second water outlet 38a Third water outlet 38b Third water outlet 38c Third water outlet 38d Third water outlet C Center lines F1, F2, F3a, F3b, F3c, F3d Mainstream W ₀ Reservoir surface α Inclination angle

Claims (7)

A flush toilet that flushes toilets with wash water supplied from a wash water supply source and discharges filth,
A bowl portion comprising a bowl-shaped filth receiving surface, and a rim portion formed on the upper edge of the filth receiving surface and having a rim water passage formed along the inside thereof;
A drain trap pipe that is connected to the bottom of the bowl and discharges filth,
Cleaning water supply means for supplying cleaning water to the bowl part,
The bowl portion filth receiving surface has an upper filth receiving surface connected to the rim portion, and a recess connected to the drain trap pipe from the inside of the upper filth receiving surface,
The washing water supply means is
It is arranged on the rim water passages at the rear of the left and right sides of the bowl part, discharges wash water to the left and right rim water passages, guides the water to the front of the bowl part along the rim water passages, and receives the upper filth receptacle. A first spout forming a first flow of wash water from the front area of the surface into the recess;
Disposed at the approximate center in the left-right direction at the rear of the bowl portion, discharges the wash water toward the recess, and forms a second flow of the wash water from the rear region of the upper waste receiving surface into the recess. A second spout,
A third of the cleaning water is disposed on both the left and right sides of the second water outlet at the rear of the bowl portion, discharges the cleaning water toward the concave portion, and flows into the concave portion from the left and right sides of the second water outlet. A third spout forming a flow of
The second water outlet and the third water outlet so that the wash water discharged from the second water outlet and the third water outlet flows from the rear region of the upper waste receiving surface into the recess. A flush toilet with a set orientation.   The front region of the upper filth receiving surface is provided with an inclined surface having an inclination angle within a range of 22.5 degrees to 32.5 degrees so as to suppress the lateral expansion of the flowing wash water. Flush toilet.   The flush toilet according to claim 1 or 2, wherein the concave portion of the filth receiving surface of the bowl portion forms a water storage surface having a predetermined area.   The cleaning water supply means stores the supplied cleaning water and discharges the cleaning water supplied from the tank having a drain formed on the bottom surface thereof, the first outlet, the second outlet. The flush toilet according to any one of claims 1 to 3, further comprising: a water outlet and a water discharge portion in which the third water outlet is formed.   The rim portion of the bowl portion includes an upper edge portion extending in the horizontal direction from the upper edge of the upper dirt receiving surface, and a hanging wall portion depending from the upper edge, and the hanging wall portion is suspended. The flush toilet according to any one of claims 1 to 4, wherein the height of the wall is formed such that at least the rear part covers the inner side in the horizontal direction of the water discharger.   The second water outlet of the cleaning water supply means is formed in a slit shape extending in the lateral direction, and the third water outlet of the cleaning water supply means is arranged on both the left and right sides of the second water outlet. The flush toilet according to any one of claims 1 to 5, wherein each toilet bowl is formed in a shape of two holes.   The flush toilet according to any one of claims 1 to 6, wherein the flush toilet is a wash-off flush toilet.