JP2017066828A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet for providing excellent recessed part washing capacity.SOLUTION: A water closet comprises a toilet bowl body 102 having a toilet bowl part 110, and the toilet bowl part 110 comprises a receiving surface part 130 for receiving dirt, a rim part 108 connected to an upper edge part of the receiving surface part 130 and a recessed part 116 formed downward in a recess shape from a lower edge part of the receiving surface part 130. The rim part 108 is provided with a first water discharge port 122a and a second water discharge port 122b for discharging wash water along the rim part 108, and the toilet bowl part 110 is constituted so as to form a joining flow 172 of dropping in the recessed part 116 by making second wash water discharged from the second water discharge port 122b merge with first wash water discharged from the first water discharge port 122a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a flush toilet that achieves good drainage even with a small amount of flush water.

  In recent years, various studies have been made on a cleaning method for cleaning the toilet bowl of a toilet. Patent Document 1 includes a concave portion formed below a bowl-shaped filth receiving surface, a rim portion, and two water discharge portions, and the main flow of cleaning water discharged from the two water discharge portions flows into the concave portion. A flush toilet is disclosed. On the other hand, such flush toilets are required to be able to be washed with a smaller amount of water in order to effectively use water resources.

JP 2012-202143 A

  By the way, FIG. 1 of Patent Document 1 shows an inflow path of cleaning water from two rim water discharge portions. In this flush toilet, all of the washing water discharged from the first water outlet flows along the rim water passage, and the washing water is surely flowed over the entire surface of the toilet bowl portion, so that the surface is washed well. . On the other hand, the wash water discharged from the second water discharge port vigorously flows down toward the concave portion by the action of the flow changing portion, and secures a discharge force for discharging the filth in the concave portion satisfactorily.

  However, in the future, the water flow and flow rate will decrease due to a decrease in the amount of washing water due to water savings and the lowering of the tank water level due to the low silhouette of flush toilets, and only the washing water discharged from the second outlet will discharge filth. There is a possibility of lack of power. Considering this point of view, the flush toilet of Patent Document 1 has not been specially devised to ensure good drainage even with a small amount of washing water, and there is room for improvement in this respect. It was.

  This invention is made in view of such a subject, The objective is to provide the flush toilet which can control the flow of the washing water discharged from the water outlet and obtain a good discharge force even with a small amount of washing water. is there.

  In order to solve the above-described problems, a flush toilet according to an aspect of the present invention includes a toilet body having a toilet bowl. The toilet bowl portion includes a receiving surface portion for receiving filth, a rim portion connected to the upper edge portion of the receiving surface portion, and a recessed portion formed to be recessed downward from the lower edge portion of the receiving surface portion. The rim portion is provided with a first water discharge port and a second water discharge port for discharging wash water along the rim portion, and the toilet bowl portion has a second discharge water discharged from the second water discharge port. It is configured to form a combined flow that merges with the first wash water discharged from the water port and falls into the recess.

  According to this aspect, the wash water discharged from the second water discharge port can merge with the wash water discharged from the first water discharge port and can be vigorously dropped into the recess, thereby suppressing the shortage of waste discharging power. can do.

  ADVANTAGE OF THE INVENTION According to this invention, the flush toilet which can obtain the discharge | emission power which discharges | emits a waste satisfactorily with little washing water can be provided.

It is a sectional side view of the flush toilet which concerns on embodiment. It is a top view of the flush toilet concerning an embodiment. It is an AA line sectional view of the flush toilet concerning an embodiment. It is a schematic diagram explaining the water flow around the 2nd water outlet of the flush toilet which concerns on embodiment. It is a schematic diagram explaining the water flow around the 1st spout of the flush toilet which concerns on embodiment. It is sectional drawing which expands and shows the periphery of the distribution water supply pipe of the flush toilet which concerns on embodiment. It is a top view of the flush toilet concerning a 2nd embodiment. It is an AA line sectional view of a flush toilet concerning a 2nd embodiment.

  Hereinafter, the present invention will be described based on preferred embodiments with reference to FIGS. The same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Also, in the drawings, some of the members that are not important for describing the embodiment are omitted.

1 is a side sectional view of a flush toilet 100 according to the present embodiment, FIG. 2 is a plan view of the flush toilet 100, and FIG. 3 is a flush when cut along a horizontal plane along the line AA in FIG. 2 is a sectional view of the toilet 100. FIG.
Hereinafter, as shown in FIG. 2, the lateral direction of the flush toilet 100 is defined as the X axis, the longitudinal direction of the flush toilet 100 is defined as the Y axis, and the height direction is defined as the Z axis. The X axis positive direction is “right direction”, and the X axis negative direction is “left direction”. Also, when one direction on the left and right is referred to as the first direction, the other direction on the left and right is referred to as the second direction. In the embodiment, the left direction is the first direction and the right direction is the second direction.

(Flush toilet)
The flush toilet 100 includes a toilet body 102 made of ceramic. Above the toilet body 102, although not shown, a box containing a hot water cleaning device such as a local cleaning device, and a toilet lid and a toilet seat that are rotatably supported by the box are disposed.

(Toilet body)
The toilet body 102 includes a toilet bowl portion 110, a drainage channel portion 112, and a peripheral wall portion 114. The drainage pipe part 112 is formed in the lower part of the toilet bowl part 110. The peripheral wall portion 114 shields internal structures such as the toilet bowl portion 110 and the drainage channel portion 112.

  The drainage pipe part 112 forms a sealed part 116e in a connection part with the toilet bowl part 110. In the sealed water part 116e, stagnant water is always stored, thereby blocking the odor of the drainage pipe part 112. The filth falling on the sealed water part 116e is pushed out together with the staying water by the washing water.

  Hereinafter, as shown in FIG. 2, a straight line extending in the front-rear direction by dividing the left-right dimension Lx of the outer surface portion of the toilet main body 102 into two equal parts in the plan view is referred to as a left-right center line M1 of the toilet main body 102. Further, a straight line extending in the left-right direction by dividing the front-rear dimension Ly of the inner surface portion of the toilet bowl portion 110 into two is referred to as a center line N1 before and after the toilet bowl 110. A straight line passing through the rear end portion 116j of the recess 116 and extending in the left-right direction is referred to as a straight line N2.

(Toilet bowl)
The toilet bowl 110 is formed in an egg shape such that the front-rear dimension is larger than the left-right dimension in plan view. The toilet bowl portion 110 includes a bowl-shaped receiving surface portion 130 for receiving filth, a concave portion 116 formed to be depressed downward from a lower edge portion of the receiving surface portion 130, and a rim portion connected to the upper edge side of the receiving surface portion 130. 108. The rim portion 108 is provided at the upper peripheral edge portion of the toilet bowl portion 110. The upper end surface part 108a of the rim part 108 is flattened so as to be a support surface of the toilet seat. The receiving surface part 130 is formed so as to incline with a downward slope toward the center side. The recessed portion 116 is formed in a bottomed shape, and an inlet of the sealed portion 116e is opened below the recessed portion 116.

  Recess 116 has a substantially elliptical or substantially polygonal shape whose front-rear dimension is longer than the left-right dimension in plan view. The recess 116 is provided between the left standing wall 20 and the right standing wall 22, the left standing wall 20 that extends to the rear left side from the front end part 116 f, the right standing wall 22 that extends to the rear right side from the front end part 116 f. And a rear wall 24 to be provided. The three standing walls of the left standing wall 20, the right standing wall 22, and the rear standing wall 24 are collectively referred to as “standing wall 26”. In FIG. 2, the front end portion 116f of the recess 116 is located on the center line M1.

In particular, the recessed portion 116 is divided into a front and a back by bending the left standing wall 20 and the right standing wall 22 between the front side and the lower side, respectively, and the recessed portion 116 has a substantially pentagonal shape in plan view. From the front side of the left standing wall 20, a combined flow 172, which will be described later, flows down into the recessed part 116, and from the rear side of the left standing wall 20, a second inward main flow 164 b described later flows into the recessed part 116.
The standing wall 26 of the recess 116 may be formed in an arc shape, and the radius of curvature of the standing wall 26 may be larger than the radius of curvature of the front end portion 116f.

(Rim headrace)
As shown in FIG. 2, the rim portion 108 is formed with two water conduits, a first rim conduit 124a provided mainly on the rear left side and a second rim conduit 124b provided mainly on the rear right side. . The two conduits of the first rim conduit 124a and the second rim conduit 124b are collectively referred to as “conduct 124”.

(Water outlet)
The rim portion 108 has two water discharge ports, a first water discharge port 122a and a second water discharge port 122b. The two water outlets of the first water outlet 122a and the second water outlet 122b are collectively referred to as “water outlet 122”. The water outlet 122 will be described later. The water outlet 122 is formed in the water conduit 124 and opens toward the rim water passage 120 so as to be continuous with the rim water passage 120 described later. A diffusion part 138 for diffusing a part of the flow of the washing water inward is provided on the right side of the first water discharge port 122a. The diffusion unit 138 will be described later.

  The first water outlet 122a is provided at the downstream end of the first rim water conduit 124a, and the second water outlet 122b is provided at the downstream end of the second rim water conduit 124b. Walls 132a and 132b for guiding the flow of cleaning water are provided on both sides of the second water outlet 122b of the second rim conduit 124b.

  As shown in FIG. 3, the flush toilet 100 includes a distribution water supply pipe 38 having a first distribution pipe 38 a and a second distribution pipe 38 b that are connected to the fork from an inlet portion 38 c. The washing water supplied from the washing water supply device (not shown) to the distribution water supply pipe 38 is a first rim conduit 124a to which the first distribution pipe 38a is connected and a second rim to which the second distribution pipe 38b is connected. It is supplied to each of the water conduits 124b.

  The cleaning water supplied to the rim water conduit 124 is discharged forward from the water outlet 122 to the rim water passage 120 described later, and swirls in the circumferential direction along the rim water passage 120. Hereinafter, the direction of turning in the circumferential direction of the cleaning water is simply referred to as “turning direction”.

(Rim waterway)
The rim portion 108 is formed with a first rim water passage 120 a and a second rim water passage 120 b formed so as to extend from the two water outlets 122 in the circumferential direction of the toilet bowl 110. The two rim water passages 120a and 120b are collectively referred to as “rim water passage 120”.

  The rim water passage 120 is provided along the inner surface of the rim portion 108. In particular, the first rim water passage 120a extends in the circumferential direction from the first water outlet 122a to the vicinity of the second water outlet 122b on the downstream side in the turning direction, and the second rim water passage 120b extends from the second water outlet 122b. It extends in the circumferential direction to the vicinity of the first water discharge port 122a on the downstream side in the turning direction.

  The rim water passage 120 is formed to swirl the cleaning water discharged from the water outlet 122. The rim water passage 120 has a shelf portion 126b extending from the upper end edge 126c of the receiving surface portion 130 toward the outside of the toilet bowl portion 110, and a side wall portion 126a rising from the outer peripheral end portion of the shelf portion 126b.

  The rim water passage 120 may be provided with an overhang portion that extends inward from the upper end portion of the side wall portion 126a and protrudes upward partially or entirely. Further, in the flush toilet 100, the upper part of the water passage 120 is opened at least in the range of the front end side half of the rim water passage 120 (the range in front of the center line N1), and the overhang portion is substantially provided. There is no undeployed state. In this case, the trouble of cleaning the water passage 120 is reduced.

(Disposition of the spout)
Next, the arrangement of the water outlet will be described.
In the case of having two spouts, the cleaning water discharged from the second spout 122b joins the cleaning water discharged from the second spout 122b with the cleaning water discharged from the second spout 122b with less cleaning water. A configuration in which it is dropped into the recess 116 with a strong momentum is preferable. According to this aspect, a configuration in which the first water discharge port 122a is located on the water discharge direction side of the second water discharge port 122b is effective.

  In the flush toilet 100, the first water outlet 122a is provided behind the center line N1 before and after the toilet bowl 110 in a plan view. In particular, the first water discharge port 122a is provided on the left side of the center line M1 in a plan view, has a portion located behind the straight line N2, and opens toward an extension line in the water discharge direction of the second water discharge port 122b. To do. The second water discharge port 122b is formed on the right side of the center line M1 and behind the rear wall 24 in plan view. In particular, the second water discharge port 122b is located behind the straight line N2 in a plan view and opens toward an extension line in the water discharge direction of the first water discharge port 122a.

  In the flush toilet 100, the first water outlet 122a and the second water outlet 122b are provided behind the recess 116 in a plan view.

  Since the first water outlet 122a and the second water outlet 122b are arranged in this manner, the extension of the flow of the water discharged from the first water outlet 122a intersects the extension of the flow of the water discharged from the second water outlet 122b. These flow together to form a flow that falls into the recess 116.

(Water flow)
Next, with reference to FIG. 3, the flow of the cleaning water will be described. FIG. 3 schematically shows how the wash water flows in the toilet bowl 110. The cleaning water 158a supplied to the first rim water conduit 124a is discharged from the first water outlet 122a forward to the first rim water passage 120a and swirls along the first rim water passage 120a. And a first inward main flow 164a that flows inward from the first rim water passage 120a. The first swirl main flow 162a and the first inward main flow 164a are collectively referred to as “first wash water 168a”.

  The washing water 158b supplied to the second rim water conduit 124b is discharged from the second water outlet 122b to the second rim water passage 120b and swirls along the second rim water passage 120b. And a second inward main flow 164b which is a flow inward from the rim water passage 120b. The second swirl main flow 162b and the second inward main flow 164b are collectively referred to as “second wash water 168b”. In addition, the main flow of washing water means a main flow in which a large proportion of the washing water flows in the same manner, and a water discharge flow from one outlet may form a plurality of main flows. The main stream of washing water may flow as a thick bundle, and may flow in the form of a film on the surface of an object.

  The first swirl main flow 162 a gradually falls to the receiving surface 130 while swirling, and forms a falling water flow 190 that flows toward the recess 116. The falling water flow 190 widely cleans the receiving surface portion 130 while flowing in the form of a film on the surface of the receiving surface portion 130. A part of the first swirl main flow 162a enters the recess 116 while swirling, swirls along the standing wall 26, and joins a vortex 188 swirling counterclockwise. The vortex 188 collects filth at the center of the sealed water part 116e and discharges it from the drain pipe part 112 (see also FIG. 1).

  The second swirl main flow 162b gradually falls to the receiving surface portion 130 while swirling, and joins and joins the first inward main flow 164a laterally with respect to the traveling direction in the region between the first water outlet 122a and the recess 116. Stream 172 is formed. That is, the first inward main flow 164a collides with the second swirl main flow 162b to form a combined flow 172 toward the recess 116. The first inward main flow 164a may be discharged toward the recess 116, and the second swirl main flow 162b may join the first inward main flow 164a to increase the water flow of the combined flow 172.

  In particular, in the flush toilet 100, the second swirl main flow 162b collides with the first inward main flow 164a in a region behind a straight line N3 extending in the left-right direction by equally dividing the front-rear dimension Lc of the recess 116 in the front-rear direction. Join together. Since most of the second swirl main flow 162b merges with the combined flow 172, the combined flow 172 flows into the recess 116 as a thick bundle of water flows.

  From the viewpoint of easily bending the second swirl main flow 162b inward, the angle θs formed by these traveling directions at the portion where the first inflow main flow 164a and the second swirl main flow 162b merge is preferably 30 degrees or more, and more. Preferably it is 45 degrees or more, more preferably 60 degrees or more. From the viewpoint of maintaining the water flow of the combined flow 172, the angle θs is preferably 150 degrees or less, more preferably 120 degrees or less.

  The combined flow 172 mainly flows down from the front side of the left standing wall 20 into the recess 116, flows forward along the left standing wall 20, collides with the front end portion 116 f, and forms a downward flow 186 that flows downward. . The downward flow 186 promotes the discharge of the filth in the recess 116 from the sealed water portion 116 e to the drainage pipe portion 112.

  The second inward main flow 164b is swung toward the recess 116 while turning, and separately from the combined flow 172, the second inward main flow 164b flows down from the rear wall 24 and the left standing wall 20 into the recess 116, and is mainly coupled in the recess 116. Merges with stream 172 to form a downward flow 186. In particular, the second inward main flow 164b falls into the concave portion 116 in a non-merged state before joining the first inward main flow 164a, and mainly joins the combined flow 172 in the concave portion 116. The water can be increased.

  Thus, the downward flow 186 is formed by the second swirl main flow 162b of the second water discharge port 122b and the combined flow 172 in which the first inward main flow 164a of the first water discharge port 122a merges with the second inward main flow 164b. As a result, the water flow and the amount of water are increased, and a good discharging power can be exhibited. In FIG. 3, the vortex 188 and the downward flow 186 are separately displayed, but in reality, they are integrated to form a three-dimensional flow.

  If the amount of water and the water flow of the second swirl main flow 162b are excessively large, there is a concern that the amount of water falling on the recess 116 after joining the first inward main flow 164a may be reduced. In the flush toilet 100, the water amount and the water force of the first inward main flow 164a are made larger than the water amount and the water force of the second swirl main flow 162b, respectively. In order to reduce the amount of water and the water flow of the second swirl main flow 162b, the amount of water and the water flow of the second swirl main flow 162b are made smaller than the amount of water and the water flow of the second inward main flow 164b, respectively. As a result, the water force of the second swirl main flow 162b decreases, and the water force of the second inward main flow 164b increases.

  Further, in order to increase the amount of water and the water flow of the first swirl main flow 162a and to clean the receiving surface 130 well, the water amount and the water flow of the first swirl main flow 162a are made larger than the water amount and the water flow of the first inward main flow 164a, respectively. .

  FIG. 4 is a schematic diagram for explaining the water flow around the second water outlet 122b of the flush toilet according to the embodiment. In FIG. 4, the main diffusion regions of the cleaning water 158b are indicated by broken lines 158c and 158d. The wash water 158b supplied to the second rim conduit 124b from the opening 38m of the second distribution pipe 38b flows along the wall 132a and the wall 132b of the second rim conduit 124b and flows from the second outlet 122b. The second rim water passage 120b is discharged to form a second swirl main flow 162b and a second inward main flow 164b.

(Diffusion part)
Next, the diffusion unit 138 will be described. FIG. 5 is an enlarged schematic view showing the periphery of the first water outlet. In FIG. 5, the main diffusion regions of the cleaning water 158a are indicated by broken lines 158e and 158f. As shown in FIG. 5, the diffusion part 138 is formed in a curved surface shape in which the radius of curvature Ra of the front end part 138c of the right side wall part 138b of the first water outlet 122a is increased when the flush toilet 100 is viewed from the front end side. Is done. The diffusion portion 138 may be a slope formed so that the opening width becomes wider toward the downstream side. A portion of the wash water that has flowed forward through the first rim conduit 124a diffuses along the diffusion portion 138 at the first water discharge port 122a.

  The flush toilet 100 changes the direction of the wash water 158a discharged from the first water discharge port 122a and the water flow by changing the shape of the diffusion part 138, so that the desired first swirl main flow 162a and the first inward main flow are changed. 164a can be formed.

(Distributed water supply pipe)
Next, the distribution water supply pipe 38 will be described. 6 is an enlarged cross-sectional view of the periphery of the distribution water supply pipe 38 of FIG. FIG. 6 shows a part of a tip end portion 38h of a second distribution pipe 38b described later in cross section. As shown in FIG. 6, the distribution water supply pipe 38 includes a branch part 38d, a tubular inlet part 38c extending upward from the branch part 38d, and a tubular first distribution pipe 38a extending leftward from the branch part 38d. The tubular second distribution pipe 38b extending rightward from the branch part 38d is integrally formed of, for example, a resin material. The wash water supplied to the inlet portion 38c flows separately from the branch portion 38d into the first distribution pipe 38a and the second distribution pipe 38b.

  The first distribution pipe 38a and the second distribution pipe 38b are provided with joint portions or bellows portions that can be bent. In particular, two joint portions 38e are provided in the middle of the first distribution pipe 38a, and a bellows portion 38f is provided in the middle of the second distribution pipe 38b. The front end 38g of the first distribution pipe 38a is fixed in a state where it is inserted into the first rim water conduit 124a. The distal end portion 38h of the second distribution pipe 38b is fixed in a state of being inserted into the second rim conduit 124b.

  The first distribution pipe 38a is provided with a forward opening 38k at the projecting end of the tip portion 38g, and is formed so as to discharge substantially forward washing water into the first rim conduit 124a. The second distribution pipe 38b is formed so that the protruding end of the tip end portion 38h is closed and an opening 38m is provided on the left side, and the left-side wash water is discharged into the second rim conduit 124b.

  The distal end portion 38h of the second distribution pipe 38b has a flat shape whose vertical dimension is thinner than the lateral dimension, and a widened portion 38j that is widened in the left-right direction is formed in the middle of the distal end portion 38h. The widened portion 38j is formed so that both ends in the left-right direction are in contact with both walls of the second rim conduit 124b and block the second rim conduit 124b. Since the widened portion 38j blocks the second rim conduit 124b, it is possible to suppress the backward flow of the wash water supplied from the second distribution pipe 38b to the rear side of the second rim conduit 124b.

  The widened portion can also be provided in the first distribution pipe 38a. In the flush toilet 100, the first rim conduit 124a is substantially straight and has a low resistance to flowing water. Therefore, since there is little backflow to the rear side of the cleaning water, no widening portion is provided in the first distribution pipe 38a.

Next, the operation of the flush toilet 100 will be described.
In the flush toilet 100, a predetermined amount of cleaning water is supplied from the cleaning water supply device to the water conduit 124 through the distribution water supply pipe 38 by operating an operation member such as a predetermined switch or lever. The supplied wash water is discharged from the spout 122 toward the water passage 120, and the sewage in the toilet bowl 110 is pushed to the sealing part 116e below the recess 116 by using a drop of the wash water, and the toilet bowl The inside of the part 110 is washed widely.

Next, the features of the flush toilet 100 of the present embodiment will be described.
When the wash water is discharged from the first water discharge port in the turning direction, there is a concern that the wash water toward the recess is insufficient. On the other hand, in the toilet bowl portion 110 of the flush toilet 100, the first washing water 168a is discharged in the turning direction, and the first washing water 168a joins with a part of the second washing water 168b, thereby forming the recess 166. Since it is comprised so that the combined flow 176 which goes to may be formed, the quantity of the washing water which goes to the recessed part 166 can be increased.

  The toilet bowl portion 110 of the flush toilet 100 is configured such that the second wash water 168b merges with the first wash water 168a laterally with respect to the traveling direction of the first wash water 168a. 162b is bent inward to form a thick bundle of combined streams 172. As a result, the water flow and the amount of water in the downward flow 186 formed from the combined flow 172 are increased, and a favorable discharge force can be obtained.

  If the amount of water and the amount of water of the second cleaning water 168b are large, there is a concern that the amount of water that falls into the recess 116 after joining the first cleaning water 168a decreases. The flush toilet 100 is configured such that the amount of water and the amount of water of the second wash water 168b are smaller than the amount of water and the amount of water of the first wash water 168a, so that even if the second wash water 168b merges from the side, the second wash The influence of the flow of the water 168 b on the direction of the combined flow 172 is small, and the combined flow 172 flows toward the recess 166.

  The toilet bowl portion 110 of the flush toilet 100 is configured such that the second wash water 168b forms a second inward main flow 164b that falls into the recess 116 separately from the combined flow 172, and thus the second inward main flow 164b. Can flow down into the concave portion 116 and merge into the combined flow 172 in the concave portion 116, thereby increasing the water flow and the amount of water in the combined flow 172 and strengthening the downward flow 186 to obtain a good discharge force. it can.

  Since the flush toilet 100 is provided with a diffusion portion 138 that diffuses a part of the first wash water 168a inwardly inside the first water discharge port 122a, the wash water discharged from the first water discharge port 122a is planar. Desired first swirl main flow 162a and first inward main flow 164a can be formed.

  In the flush toilet 100, the first water outlet 122a and the second water outlet 122b are provided behind the recess 116 in a plan view, so that the wash water discharged from the second water outlet 122b is in the vicinity of the first water outlet 122a. And a strong combined flow 172 can be formed by combining with a part of the water discharged from the first water outlet 122a.

  The shelf and side walls of the rim waterway can be kept relatively clean by the flow of cleaning water, but the back side of the overhang may be left with dirt and moisture attached because there is little contact with the cleaning water. . For this reason, in order to keep the back side of an overhang part clean, the effort which cleans with a short cycle is taken.

  On the other hand, in the flush toilet 100, since the upper half of the range of the front end side half of the first rim water passage 120a is opened, residue of dirt on the rim portion 108 is suppressed, and cleaning effort is reduced. Can do.

(Second Embodiment)
Next, a flush toilet 200 according to a second embodiment of the present invention will be described. 7 is a plan view of the flush toilet 200 corresponding to FIG. 2, and FIG. 8 is a cross-sectional view taken along the line AA of the flush toilet 200 corresponding to FIG. The flush toilet 200 is different from the flush toilet 100 in that the first water outlet 122a is positioned backward and the overhang portion 118 is provided in a part of the second rim water passage 120b. In addition, the other configuration and the operation thereof are the same, and redundant description is omitted.

  As shown in FIG. 7, the flush toilet 200 has a first water outlet 122 a located on the rear side as compared with the flush toilet 100. In particular, when a straight line passing through the front end portion 134 of the second water discharge port 122b and extending in the left-right direction is referred to as a straight line N4, the first water discharge port 122a includes a portion located on the rear side of the straight line N4. Moreover, as shown in FIG. 7, the 2nd water discharge port 122b is opened substantially leftward.

  Next, with reference to FIG. 8, the flow of the washing water in the flush toilet 200 will be described. FIG. 8 schematically shows how the wash water flows in the toilet bowl 110. As shown in FIG. 8, the wash water 158a supplied to the first rim water conduit 124a is discharged from the first water outlet 122a to the first rim water passage 120a and swivels along the first rim water passage 120a. A swirl main flow 162a and a first inward main flow 164a flowing inward from the first rim water passage 120a are formed.

  Further, as shown in FIG. 8, the wash water 158b supplied to the second rim water conduit 124b is discharged from the second water outlet 122b to the second rim water passage 120b and swivels along the second rim water passage 120b. A second swirl main flow 162b is formed. With the configuration described above, the second swirl main flow 162b discharged from the second water discharge port 122b flows toward the region on the front side of the first water discharge port 122a, and most of the second swirl main flow 162b from the first water discharge port 122a in the vicinity of the region. It merges with the first inward main flow 164a to be discharged.

  As shown in FIG. 8, the first swirl main flow 162a gradually falls to the receiving surface 130 while swirling, and, like the flush toilet 100, collects filth at the center of the water seal 116e and collects the drainage pipe. Discharged from the unit 112. The second swirl main flow 162b gradually falls to the receiving surface 130 while swirling, and, like the flush toilet 100, in the direction of travel to the first inward main flow 164a in the region between the first water outlet 122a and the recess 116. On the other hand, they merge sideways to form a combined flow 172. Similar to the flush toilet 100, the combined flow 172 promotes the discharge of the filth from the sealed portion 116e to the drainage pipe portion 112 by forming a downward flow 186 that flows downward in the recess 116.

  As shown in FIG. 8, the flush toilet 200 is provided with a diffusion part 138, and the diffusion part 138 can increase the diffusion of the flush water 158 a to the inside in the same manner as described for the flush toilet 100.

  As shown in FIG. 7, an overhang portion 118 is provided in a part of the second rim water passage 120 b of the flush toilet 200. The overhang portion 118 covers the upper side of the rim water passage 120 like a ridge over a region on the front side of the first water outlet 122a from the second water outlet 122b. The overhang part 118 can improve the design by covering the area | region of the front side of the 1st water discharge port 122a.

  The flush toilet 200 operates in the same manner as the flush toilet 100 and has the same features as the flush toilet 100.

  In the above, it demonstrated based on embodiment of this invention. Those skilled in the art will understand that these embodiments are examples, and that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes are also within the scope of the claims of the present invention. It is where it is done. Accordingly, the description and drawings herein are to be regarded as illustrative rather than restrictive.

  Although the flush toilets 100 and 200 have been described using the wash-off method as a cleaning method, the inside of the toilet bowl 110 may be cleaned by a cleaning method combined with another method such as a siphon type or a siphon-zette type. The toilet main body 102 has been described as an example of a floor-standing toilet installed on the floor surface of a toilet room, but may be a wall-mounted toilet. The toilet body 102 may be made of resin or the like in addition to pottery.

  In the flush toilets 100 and 200, the example in which the water spout generates a counterclockwise swirling water flow has been described. However, for example, the right and left may be switched to generate a clockwise water flow.

  In the flush toilet 200, an example in which the overhang portion 118 is provided only in a part of the second rim water passage 120b and no overhang portion is provided in at least the range of the front end side half of the rim water passage 120 will be described. However, it is not limited to this. In the rim water passage, the overhang portion may not be provided at all, and the overhang portion may be provided partially or entirely as necessary. In this case, when the washing water flows, the washing water can be prevented from scattering to the outside by the overhang portion.

  In the embodiment of the present invention, the example in which the rim portion has two water discharge ports has been described. However, another water discharge means may be provided in addition to the two water discharge ports.

100 flush toilet, 20 left standing wall, 22 right standing wall, 24 rear standing wall,
38 distribution water supply pipe, 38a first distribution pipe, 38b second distribution pipe,
102 toilet body, 106 upper peripheral edge, 108 rim,
108a upper end surface part, 110 toilet bowl part, 112 drainage pipe part,
114 peripheral wall part, 116 recessed part, 116e sealing part,
120a 1st rim waterway, 120b 2nd rim waterway,
122a first outlet, 122b second outlet,
124a first rim conduit, 124b second rim conduit,
126a side wall portion, 126b shelf portion, 130 receiving surface portion,
138 diffusion section, 162a first swirl mainstream,
162b second swirl main flow, 164a first inward main flow,
164b second inward mainstream, 168a first wash water,
168b second wash water, 172 combined flow, 186 downward flow,
188 vortex, 190 falling water flow.

Claims (8)

A toilet body having a toilet bowl,
The toilet bowl portion includes a receiving surface portion for receiving filth, a rim portion connected to an upper edge portion of the receiving surface portion, and a concave portion formed to be depressed downward from a lower edge portion of the receiving surface portion. And
The rim portion is provided with a first water outlet and a second water outlet for discharging cleaning water along the rim portion,
The toilet bowl part forms a combined flow in which the second wash water discharged from the second water discharge port joins the first wash water discharged from the first water discharge port and falls into the recess. A flush toilet characterized by comprising. In the toilet bowl, the first washing water is discharged in a swiveling direction,
The flush toilet according to claim 1, wherein the flush toilet is configured to form a combined flow toward the recess when the first wash water merges with the second wash water.   The said toilet bowl part is comprised so that the said 2nd wash water may be combined with the said 1st wash water transversely with respect to the advancing direction of the said 1st wash water, The 1st or 2 characterized by the above-mentioned. The flush toilet described.   4. The flush toilet according to claim 3, wherein the toilet bowl is configured such that the second wash water has a lower water flow than the first wash water. 5.   The said toilet bowl part is comprised so that the said 2nd washing | cleaning water may form another main stream which falls in the said recessed part separately from the said combined flow. The flush toilet described.   The flush toilet according to any one of claims 1 to 5, wherein the first water discharge port is provided with a diffusing portion that diffuses a part of the first wash water inward.   The flush toilet according to any one of claims 1 to 6, wherein the first water outlet and the second water outlet are provided behind the concave portion in plan view. The rim portion is provided with a water passage through which the first washing water flows,
The flush toilet according to any one of claims 1 to 7, wherein the upper half of the range of the front end side half of the water passage is open.

Images