JP7353805B2 - flush toilet - Google Patents

Description

The present disclosure relates to flush toilets.

Patent Document 1 discloses a conventional toilet main body. The toilet main body includes a toilet bowl portion, a toilet drainage channel, a first spout, and a second spout. The flushing water spouted from the first spout forms a swirling flow that swirls counterclockwise inside the toilet bowl when viewed from above. The wash water spouted from the second spout joins the wash water spouted from the first spout and flows into the water reservoir. Therefore, in this toilet body, the flow rate of the bundle of washing water flowing into the water storage part is increased, and the filth can be pushed into the toilet drainage channel well, and the filth, etc. can be efficiently discharged from the toilet bowl body. Can be done.

Japanese Patent Application Publication No. 2014-037723

In the toilet main body of Patent Document 1, the flushing water spouted from the first spout swirls and flows to a position beyond the second spout, so depending on the force of the swirling flow that swirls counterclockwise inside the toilet bowl, It is difficult to flow the wash water into the desired position of the water reservoir. For this reason, there is room for improvement in terms of improving the discharge performance by appropriately setting the position in the water storage section where the wash water swirling inside the toilet bowl flows into.

The present disclosure aims to improve the discharge performance of a flush toilet bowl.

The flush toilet of the present disclosure includes a toilet bowl portion having a bowl surface, a recess formed below the bowl surface, and a spout that supplies flush water to the bowl surface, A guide portion is provided near a side from which the flushing water swirling within the toilet bowl portion flows, and guides the flushing water swirling within the toilet bowl portion and flowing into the recessed portion.

FIG. 2 is a perspective view of a flush toilet with the toilet seat device of Embodiment 1 attached. 1 is a top view of the flush toilet of Embodiment 1. FIG. 3 is a sectional view taken along arrows III-III in FIG. 2. FIG. 3 is a sectional view taken along arrow IV-IV in FIG. 2. FIG. 5 is a sectional view taken along the line VV in FIG. 4. FIG. FIG. 6 is a view of a cross section taken along the line VI-VI in FIG. 5, viewed diagonally from above. FIG. 7 is a view of the vicinity of the guide portion of another embodiment as viewed diagonally from above.

Embodiment 1, which embodies the flush toilet of the present disclosure, will be described with reference to the drawings. In the following description, when the flush toilet is viewed from the front, the front side is the front and the back side is the rear. The left-right direction and the up-down direction are the left-right direction and the up-down direction when the flush toilet is viewed from the front. The left side of FIG. 2 is the left side, and the right side is the right side. The right side of FIG. 3 is the front, the left side is the rear, the upper side of FIG. 3 is the upper side, and the lower side is the lower side.

<Embodiment 1>
The flush toilet 10 of Embodiment 1 is attached to a wall surface 100, as shown in FIG. The flush toilet bowl 10 has a toilet seat device 90 attached above. The toilet seat device 90 is a functional component and includes a functional section 91 and a toilet seat section 93. The functional unit 91 houses a private parts cleaning mechanism, a deodorizing mechanism, etc. (not shown) inside. The functional part 91 supports the toilet seat part 93 rotatably in an upright state and a collapsed state. In FIG. 1, the toilet seat portion 93 is shown in a collapsed state. The toilet seat section 93 is located above the toilet bowl section 20 in a collapsed state.

The flush toilet 10 includes a toilet bowl portion 20, a water supply channel 50, a drainage channel 60, a top surface portion 70, and a side wall portion 80, as shown in FIGS. 2 and 3. The toilet bowl portion 20 is open upward. The opening of the toilet bowl portion 20 has an oval shape that is long in the front-rear direction when viewed from above. In the following explanation, in the front-rear direction of the toilet bowl part 20, when the space between the front end position and the rear end position at the lower end of the standing surface 25A, which will be described later, is divided into four equal parts, the front 1/4 area is defined as the front of the toilet bowl part 20. It is called area 20A.

The toilet bowl part 20 has a bowl surface 21, a recessed part 23, a water conduit 25, an overhang part 27, a first spout 29, a second spout (spout) 30, and a guide part 40. The pot surface 21 is formed into a mortar shape. The bowl surface 21 has a larger inclination angle toward the recess 23 at the rear of the toilet bowl portion 20 than the front region 20A. The filth caught on the pot surface 21 is discharged through the recess 23 and the drainage channel 60 along with the washing water that flows down while swirling along the pot surface 21.

The recess 23 is formed below the pot surface 21. The recessed portion 23 is disposed toward the rear of the toilet bowl portion 20 and is connected to the drainage channel 60. The recess 23 has a water reservoir 24 that stores cleaning water. The recess 23 is provided continuously from the pot surface 21. The front wall of the recess 23 hangs downward from the lower end of the pot surface 21 in a bent manner. The rear wall of the recess 23 hangs down from the pot surface 21 with an angle of inclination that gradually increases.

As shown in FIGS. 3 and 4, the water conduit 25 is configured so that the washing water circulating inside the toilet bowl portion 20 flows therethrough. The water conduit 25 is formed at the inner peripheral edge of the toilet bowl portion 20 over substantially the entire circumference. The water conduit 25 has an upright surface 25A and an inclined surface 25B that slopes downward from the lower end of the upright surface 25A toward the water storage section 24. The upright surface 25A is a surface that stands up in the vertical direction on the outer peripheral side of the water conduit 25. The upright surface 25A guides the washing water circulating inside the toilet bowl portion 20. A part of the vertical surface 25A is constituted by a guiding surface 25C, which will be described later. The vertical surface 25A has a substantially constant radius of curvature in a plan view in the front region 20A of the toilet bowl portion 20 (see FIG. 2). In the present application, "the radius of curvature is substantially constant" means, for example, that the change in the radius of curvature in the entire front region 20A of the toilet bowl portion 20 is within 20%. The inclined surface 25B is constituted by shelf surfaces 26 on the left, right, and rear sides of the toilet bowl portion 20, and constituted by the bowl surface 21 in front of the toilet bowl portion 20. The shelf surface 26 has a smaller inclination angle toward the water storage section 24 than the pot surface 21, and extends at a gentle downward slope toward the water storage section 24. In addition, in the inclined surface 25B, the shelf surface 26 and the pot surface 21 are continuously formed so that the inclination angle toward the water storage part 24 side gradually changes.

The overhang portion 27 is formed at the opening edge of the toilet bowl portion 20 over substantially the entire circumference. The overhang portion 27 protrudes toward the center of the toilet bowl portion 20 and covers the upper side of the water conduit 25. The overhang portion 27 prevents flushing water and the like from flowing toward the outside of the toilet bowl portion 20 . The overhang portion 27 has a larger protrusion amount on the left and right sides and rearward side of the toilet bowl portion 20 than the amount of protrusion on the front side of the toilet bowl portion 20 . In this embodiment, the “center of the toilet bowl portion 20” is the center of the opening of the toilet bowl portion 20.

The first water spout 29 and the second water spout 30 each open to the vertical surface 25A, as shown in FIG. The first spout 29 is located on the left side of the toilet bowl section 20, and the second spout 30 is located on the right side of the toilet bowl section 20. The first spout 29 is formed at the upper left side of the toilet bowl portion 20 in the middle portion in the front-rear direction. The first water outlet 29 is located at the downstream end of the first water outlet flow path 55 of the water supply channel 50 and opens toward the front. The first spout 29 spews flush water circulating inside the toilet bowl portion 20 toward the front side. The second spout 30 is formed at the upper right side of the toilet bowl section 20 at the rear. The second water spout 30 is located at the downstream end of the second water spout channel 57 of the water supply channel 50 and opens toward the left. The second spout 30 spouts cleaning water toward the left rear and left side. A portion of this washing water is spouted in the same direction as the washing water that has swirled and flowed inside the toilet bowl portion 20. The second spout 30 is located at the downstream end of the flow of wash water swirling within the toilet bowl portion 20 . In the present application, "the downstream end of the flow of the flushing water swirling inside the toilet bowl section 20" refers to a region where the flow direction of at least a portion of the flushing water that has swirled inside the toilet bowl section 20 has been changed. , means the position where the flow stops in the turning direction.

The second spout 30 is surrounded by a front edge 31, a rear edge 33, an upper edge 35, and a shelf surface 26, as shown in FIGS. 5 and 6. The front edge 31 is formed by a corner between the first wall 31A and the second wall 31B. In FIG. 5, the back sides of the first wall portion 31A and the second wall portion 31B are drawn with broken lines. The first wall portion 31A has a shape that extends parallel to the left rear, that is, the direction in which a large amount of cleaning water is discharged from the second water spout 30. The rear surface of the first wall portion 31A constitutes the wall surface of the second water discharge channel 57. The second wall portion 31B has a shape that extends forward from the left end of the first wall portion 31A in a bent manner, and the left side surface constitutes the guide surface 25C. The rear edge 33 of the second spout 30 is formed by the third wall 33A. The third wall portion 33A has a shape that extends along the direction in which wash water is discharged from the second spout 30, and its front surface constitutes an upright surface 25A behind the toilet bowl portion 20. The rear surface of this third wall portion 33A constitutes the wall surface of the second water discharge flow path 57. The front edge 31 is the edge of the second spout 30 on the side from which the wash water swirling inside the toilet bowl section 20 flows.

The guide portion 40 is provided near the side of the second spout 30 from which the flushing water swirling inside the toilet bowl portion 20 flows. Specifically, the guide portion 40 is provided at the front edge 31 of the second water spout 30 . The guide part 40 and the wash water that has swirled and flowed inside the toilet bowl part 20 are introduced into the recessed part 23. The guide section 40 is collided with the wash water that has swirled and flowed inside the toilet bowl section 20, and changes the direction of the flow of the collided wash water. Specifically, the guide portion 40 has a guide surface 41 that guides the flow direction of the collided wash water. The guide surface 41 is bent toward the left from the rear end of the guide surface 25C extending along the front-rear direction, and extends toward the left. On the other hand, the rear surface of the first wall section 31A and the front surface of the third wall section 33A, which define the direction in which cleaning water is discharged from the second water spout 30, extend slightly toward the left and rearward. The guide surface 41 is configured to guide the direction of the flow of the wash water that has swirled inside the toilet bowl portion 20 toward the front side slightly from the direction in which the wash water is discharged from the second spout 30. ing.

The guide portion 40 has a shape that projects from the water conduit 25. The guide portion 40 protrudes from the standing surface 25A and has a lower end connected to the shelf surface 26. It can also be said that the guide portion 40 protrudes from the shelf surface 26. The guide portion 40 protrudes toward the rear region 23B in the recess 23. The rear region 23B of the recess 23 is a region including the rear wall of the recess 23 and its vicinity. The protruding end surface 43 of the guide portion 40 is located within a range overlapping with the overhang portion 27 in plan view (see FIG. 2). With such a configuration, even if splashes are generated due to washing water hitting the guide section 40, the overhang section 27 suppresses the splashes from heading to the outside of the toilet bowl section 20.

In the guide portion 40, the lower portion is referred to as a first protrusion 40A, and the portion provided continuously above the first protrusion 40A is referred to as a second protrusion 40B. Both the first protruding part 40A and the second protruding part 40B are parts that protrude from the water conduit 25 toward the center of the toilet bowl part 20. The first protrusion 40A is a portion connected to the shelf surface 26. The second protruding portion 40B is a portion located near the middle portion in the vertical direction of the vertical surface 25A. The second protrusion 40B has a smaller protrusion amount than the first protrusion 40A. The guide portion 40 has a protrusion amount that gradually decreases from the first protrusion 40A toward the second protrusion 40B. In other words, the protruding end surface 43 of the guide portion 40 has an inclined shape (bank shape). The portion of the guide portion 40 above the second protrusion 40B has a larger protrusion amount than the second protrusion 40B.

The guide surface 25C is provided on the upstream side of the flow of washing water swirling inside the toilet bowl section 20 with respect to the guide section 40. The guiding surface 25C is configured to guide the flushing water swirling within the toilet bowl section 20 toward the center of the toilet bowl section 20. Specifically, the guide surface 25C is provided so that a part of the vertical surface 25A is inclined toward the left as it goes rearward. The front end of the guide surface 25C is located at the center of the toilet bowl portion 20 in the front-rear direction. The front end of the guiding surface 25C can be identified as a region where the radius of curvature of the vertical surface 25A changes locally. The front end of the guide surface 25C is located near the portion of the toilet bowl portion 20 where the overhang portion 27 protrudes the largest amount (see FIGS. 2 and 4). The guide surface 25C extends to the guide portion 40. The guide surface 25C is constituted by the left side surface of the second wall portion 31B erected on the shelf surface 26. In the toilet bowl portion 20, as the guide surface 25C inclines toward the left side, the dimension of the shelf surface 26 in the left-right direction becomes smaller toward the rear.

As shown in FIGS. 2 and 3, the water supply channel 50 is arranged at the rear upper part of the left and right center of the flush toilet bowl 10, and has an inlet 51 at an upstream end opening toward the rear. The inlet 51 of the water supply channel 50 is watertightly connected to a cleaning water supply pipe 101 drawn out to the wall surface 100 by a connecting member (not shown) so that the cleaning water does not leak. This water supply channel 50 has an introduction channel 53 extending forward from the upstream end, and a first water discharge channel 55 and a second water discharge channel 57 that are branched at the downstream end of the introduction channel 53. The first water discharge channel 55 extends forward from the rear of the toilet bowl portion 20 toward the left. A downstream end of the first water spouting channel 55 communicates with the first water spout 29 . The second water discharge flow path 57 extends from the rear of the toilet bowl portion 20 toward the right and is folded back at the right end portion. A downstream end of the second water spout channel 57 communicates with the second water spout 30 .

The drainage channel 60 has an upstream end communicating with an inlet 61 that opens at the bottom of the recess 23 . The drainage channel 60 also includes an introduction channel 63 that extends rearward and downward, an ascending channel 65 that continues from the downstream end of the introducing channel 63 and extends rearward upward, and a downstream of the ascending channel 65. It has a downward flow path 67 that extends continuously from the end toward the rear and downward and is connected to the drain pipe 103 . The downstream end of the descending flow path 67 opens rearward, and is watertightly connected to a drain pipe 103 drawn out to the wall surface 100 via a connecting member (not shown) to prevent drainage from leaking.

As shown in FIG. 2, the upper surface portion 70 has a rim portion 71 that extends forward and both sides from the upper edge of the toilet bowl portion 20, and a rear surface portion 73 that extends rearward from the upper edge of the toilet bowl portion 20. are doing. The rim portion 71 has a U-shape in plan view, and the toilet seat portion 93 in a reclined state is placed thereon. The rear surface portion 73 has a rectangular shape in plan view, and the functional portion 91 is placed above.

As shown in FIGS. 3 and 4, the side wall portion 80 hangs down from the outer peripheral edge of the upper surface portion 70 and continues from the front end to the right and left sides so as to surround the toilet bowl portion 20 and the drainage channel 60. The lower end portion of the drainage channel 60 is located slightly below the lower end edge of the side wall portion 80. In other words, in this flush toilet bowl 10, since the side wall portion 80 is formed by a curved surface that is continuously curved from the front side to the right and left sides, most of the toilet bowl portion 20 and the drainage channel 60 are not visible from the outside.

Next, a description will be given of how flushing water flows when flushing the flush toilet 10 having such a configuration.

This flush toilet 10 discharges water from the first water spout 29 and the second water spout 30 via the water supply channel 50 when a toilet flush switch provided on a remote controller (not shown) is operated. As a result, the flush toilet 10 performs toilet flushing.

As shown in FIG. 2, the flushing water spouted from the first spout 29 flows counterclockwise inside the toilet bowl section 20 along the water conduit 25 of the toilet bowl section 20. At this time, part of the washing water flows down toward the recess 23 due to the slope of the slope 25B. The vertical surface 25A has a substantially constant radius of curvature in a plan view in the front region 20A of the toilet bowl portion 20. For this reason, the washing water that rotates while being guided by the standing surface 25A is more concentrated in the front region 20A of the toilet bowl section 20 than in the case where the toilet bowl section has an upright surface whose radius of curvature becomes smaller toward the front end of the toilet bowl section. The flow velocity is less likely to decrease. The washing water that has turned along the vertical surface 25A and passed through the front region 20A of the toilet bowl section 20 is guided toward the left side of the toilet bowl section 20 along the guiding surface 25C in the right region of the toilet bowl section 20. . That is, the guiding surface 25C changes the flow direction of the washing water swirling within the toilet bowl portion 20 from the direction toward the rear to the direction toward the left rear.

As shown in FIG. 5, the cleaning water passing through the guide surface 25C and flowing toward the left rear collides with the guide surface 41 of the guide section 40. As shown in FIG. Then, the direction in which the main flow of the cleaning water flows changes to the left due to the collision. The upper side of the guide part 40 has a smaller protrusion amount than the lower side, and some of the wash water flowing in the upper part of the water conduit 25 passes over the guide part 40 and swirls toward the rear. Therefore, the generation of droplets when colliding with the guide portion 40 is suppressed. The main flow of the cleaning water that has collided with the guide section 40 is guided toward the left side along the protruding direction of the guide section 40 . The cleaning water guided to the protruding end surface 43 of the guide portion 40 flows down toward the rear region 23B of the recess 23 due to the slope of the shelf surface 26 and the pot surface 21, and is introduced into the recess 23. That is, the guide section 40 forms a flow of the wash water toward the rear region 23B of the recess 23 at the downstream end of the wash water spouted from the first spout 29 and swirling inside the toilet bowl section 20 . In other words, the guide section 40 defines the downstream end of the wash water circulating inside the toilet bowl section 20 .

A portion of the cleaning water discharged from the second spout 30 toward the left and slightly rearward turns along the shelf surface 26 and flows down to the front region of the recess 23 . A part of the cleaning water discharged from the second spout 30 toward the left side and slightly rearward flows down toward the rear region 23B of the recess 23 due to the slope of the shelf surface 26 and the bowl surface 21. Among the cleaning water discharged from the first spout 29 , the cleaning water guided by the guide section 40 circles around the rear area 23</b>B of the recess 23 , flows along the left wall surface of the recess 23 , and flows in the front area of the recess 23 . Head to. The wash water flowing toward the front region of the recess 23 joins the wash water flowing down from the front region 20A of the toilet bowl portion 20. The cleaning water guided by the guide portion 40 becomes a flow that assists the cleaning water flowing from the second water spout 30 to the recess 23 . The cleaning water that has flowed into the recess 23 forms a flow toward the inlet 61 of the drainage channel 60, and forms a flow of cleaning water that pushes dirt and the like toward the inlet 61 of the drainage channel 60. In other words, this flush toilet bowl 10 can effectively discharge filth and the like even if the amount of flushing water discharged from the first spout 29 and the second spout 30 is reduced.

As described above, the flush toilet 10 of the present embodiment includes the bowl surface 21, the recess 23 formed below the bowl surface 21, the second spout 30 that supplies flush water to the bowl surface 21, A toilet bowl portion 20 is provided. The toilet bowl section 20 introduces the flushing water that has swirled inside the toilet bowl section 20 into the recess 23 near the side of the second spout 30 from which the flushing water swirling inside the toilet bowl section 20 flows. A guide section 40 is provided.

This flush toilet bowl 10 is configured such that the guide section 40 introduces the flush water that has swirled inside the toilet bowl section 20 into the concave section 23, so that the flush water that has swirled inside the toilet bowl section 20 is introduced at the downstream end of the flow of flush water that is swirling inside the toilet bowl section 20. , it is possible to form a flow of cleaning water that pushes in dirt, etc. Therefore, the discharge performance of the flush toilet bowl 10 can be improved.

In the flush toilet bowl 10 of the present embodiment, the guide section 40 is collided with the flushing water that has swirled and flowed within the toilet bowl section 20, and changes the flow direction of the collided flushing water. According to this configuration, the flow of the wash water can be reliably changed by the wash water colliding with the guide portion 40. Therefore, it becomes easier to introduce the cleaning water into the recess 23.

In the flush toilet bowl 10 of the present embodiment, the toilet bowl section 20 further includes a water conduit 25 through which flush water swirling within the toilet bowl section 20 flows, and the guide section 40 protrudes from the water conduit 25 . According to this configuration, the cleaning water flowing through the water conduit 25 can be guided from the water conduit 25 toward the recess 23 by the guide portion 40 and introduced into the recess 23 .

In the flush toilet 10 of the present embodiment, the guide portion 40 is provided continuously above the first protrusion 40A that protrudes from the water conduit 25 toward the center of the toilet bowl portion 20 and the first protrusion 40A. and a second protruding portion 40B that protrudes from the water conduit 25 toward the center of the toilet bowl portion 20. The second protrusion 40B has a smaller protrusion amount than the first protrusion 40A. According to this configuration, the first protrusion 40A having a large protrusion amount can guide the cleaning water flowing below the water conduit 25 from the water conduit 25 toward the recess 23. In addition, the second protrusion 40B is configured to have a smaller protrusion amount than the first protrusion 40A, thereby suppressing splashing of wash water droplets.

In the flush toilet bowl 10 of this embodiment, the guide portion 40 protrudes toward the rear region 23B in the recess 23. According to this configuration, the cleaning water flowing through the water conduit 25 can be guided from the water conduit 25 toward the rear region 23B of the recess 23 by the guide portion 40, and can be introduced into the rear region 23B of the recess 23.

In the flush toilet 10 of the present embodiment, the toilet bowl section 20 directs the flushing water swirling inside the toilet bowl section 20 to the upstream side of the flow of flushing water swirling inside the toilet bowl section 20 with respect to the guide section 40. It further includes a guide surface 25C that guides the toilet bowl portion 20 toward the center. According to this configuration, on the upstream side of the guide section 40, the cleaning water swirling inside the toilet bowl section 20 is guided toward the center side of the toilet bowl section 20 by the guiding surface 25C, so that the guiding surface 25C and the guide section 40, the cleaning water can be reliably introduced into the recess 23. Since the toilet bowl part 20 has the guide surface 25C, the direction in which the flushing water flows is not suddenly changed by the guide part 40 compared to the case where the guide part 25C does not exist, and this is due to the provision of the guide part 40. The force of the cleaning water is less likely to weaken.

In the flush toilet 10 of the present embodiment, the toilet bowl section 20 has an upright surface 25A that guides the flushing water circulating inside the toilet bowl section 20, and the upright surface 25A is located in the front area 20A of the toilet bowl section 20. , the radius of curvature in plan view is approximately constant. According to this configuration, in the front region 20A of the toilet bowl section 20, the force of the washing water swirling inside the toilet bowl section 20 is unlikely to weaken, and the washing water can be sufficiently spread to the downstream end. In addition, at the downstream end of the flow of washing water swirling inside the toilet bowl section 20, the guide section 40 can reliably introduce the washing water that is swirling vigorously into the recessed section 23.

In the flush toilet bowl 10 of this embodiment, the toilet bowl portion 20 has a first spout 29 located on one side in the left-right direction and a second spout 30 located on the other side. The first water spout 29 is configured to spout flush water circulating inside the toilet bowl toward the front side. The second spout 30 is configured to spout flush water in the same direction as the flush water that has swirled and flowed through the toilet bowl portion 20 . The guide portion 40 is provided on the front edge portion 31 of the second spout 30 on the side from which the flushing water swirling inside the toilet bowl portion 20 flows. According to this configuration, the guide section 40 allows the cleaning water spouted from the first spout 29 to flow from the second spout 30 in the recess 23 before joining with the flush water spouted from the second spout 30 . The discharged cleaning water can be introduced into a position where it is difficult to enter. Therefore, even if the amount of cleaning water spouted from the first water spout 29 and the second water spout 30 is reduced, filth and the like can be discharged satisfactorily.

The present disclosure is not limited to the embodiments described above and illustrated in the drawings.

(1) Unlike Embodiment 1, the toilet bowl portion does not need to include the second spout. The toilet bowl portion may further include another spout.

(2) The first water spout and the second water spout may be formed in a location different from that in the first embodiment, and may be formed in a location where a good flow of flushing water can be formed in the toilet bowl portion.

(3) Unlike Embodiment 1, the guide portion may have a guide surface whose radius of curvature gradually changes from the vertical surface, and the direction in which the cleaning water flows gradually changes along the guide surface. good.

(4) The protruding direction of the guide portion may be different from that of the first embodiment as appropriate, taking into consideration the position of the inlet of the drainage channel of the recess, the flow rate of the washing water swirling in the toilet bowl, and the like.

(5) In Embodiment 1, the toilet bowl portion has a guiding surface inclined toward the front side of the guide portion. However, the toilet bowl portion may not have a guiding surface. The guide surface does not have to be in an inclined shape, but may be a curved surface whose radius of curvature gradually changes from an upright surface.

(6) Unlike Embodiment 1, the shelf surface may be provided in front of the toilet bowl part. In addition, the configuration of the water conduit can be changed as appropriate.

(7) In addition to the embodiments described above, the manner in which the second protrusion has a smaller protrusion amount than the first protrusion can be modified as appropriate. For example, like the guide portion 140 shown in FIG. 7, the amount of protrusion may decrease rapidly from the first protrusion toward the second protrusion. In other words, the protruding end surface 143 of the guide portion 140 may have a concave shape.

(8) In addition to the embodiments described above, the portion of the toilet bowl portion where the guide portion is provided can be changed as appropriate. For example, the guide portion may be provided at the edge of the first discharge port.

(9) In addition to the embodiments described above, the position where the guide portion is provided in the toilet bowl portion can be changed as appropriate. For example, the guide portion may be located slightly in front of the front edge of the second discharge port, and may be disposed at a position slightly upstream of the washing water swirling in the toilet bowl with respect to the second discharge port.

DESCRIPTION OF SYMBOLS 10... Flush toilet bowl, 20... Toilet bowl part, 20A... Front area, 21... Bowl surface, 23... Recessed part, 23B... Rear area, 25... Water conduit, 25B... Vertical surface, 25C... Guide surface, 29... First Spout, 30...Second water spout (spout), 31...Front edge (edge), 40, 140...Guide part

Claims (6)

comprising a toilet bowl portion having a bowl surface, a recess formed below the bowl surface, and a spout for supplying washing water to the bowl surface;
The toilet bowl portion includes a guide portion that introduces the cleaning water that has swirled inside the toilet bowl portion and has flowed into the recessed portion, near the side of the water spout from which the cleaning water swirling inside the toilet bowl portion flows. established,
The toilet bowl section further includes a water conduit through which washing water swirling within the toilet bowl section flows,
The guide part is provided continuously above a first protrusion part that protrudes from the water conduit toward the center of the toilet bowl part, and the guide part is provided continuously above the first protrusion part and extends from the water conduit towards the center of the toilet bowl part. a second protrusion protruding toward the center;
The second protrusion has a smaller protrusion amount than the first protrusion. 2. The flush toilet according to claim 1 , wherein the guide portion is collided with the flushing water that has swirled and flowed within the toilet bowl portion, and changes the direction of the flow of the collided flushing water. The flush toilet according to any one of claims 1 to 2 , wherein the guide portion protrudes toward a rear region of the recess. The toilet bowl section guides the cleaning water swirling inside the toilet bowl section toward the center of the toilet bowl section on the upstream side of the flow of the cleaning water swirling inside the toilet bowl section with respect to the guide section. The flush toilet according to any one of claims 1 to 3 , further comprising a guiding surface. The toilet bowl portion has an upright surface that guides the washing water swirling within the toilet bowl portion,
The flush toilet according to any one of claims 1 to 4 , wherein the vertical surface has a substantially constant radius of curvature in a plan view in a front region of the toilet bowl. The toilet bowl portion has a first spout located on one side in the left-right direction and a second spout located on the other side,
The first spout is configured to spout flush water swirling inside the toilet bowl toward the front side,
The second spout is configured to spout flush water in the same direction as the flush water that has swirled and flowed within the toilet bowl portion,
The water spout is the second water spout,
The flushing type according to any one of claims 1 to 5 , wherein the guide part is provided at an edge of the second spout on the side from which the washing water swirling in the toilet bowl part flows. Toilet bowl.

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