JP2024028564A - flush toilet - Google Patents

Abstract

The object of the present invention is to improve the design of the toilet bowl body while maintaining the washability and cleanability of the toilet bowl body with a simpler configuration. [Solution] A flush toilet that cleans the toilet body with flush water, which has a bowl-shaped dirt receiving surface and an inner peripheral surface formed along the upper edge of the dirt receiving surface so as to rise vertically. a bowl portion having a formed rim portion, a water spout that spouts cleaning water to the bowl portion to form a swirling flow, and a water conduit that supplies cleaning water to the water spout; A throttle flow path is formed at the end, and the water outlet is a horizontally elongated opening, and in the rear half of the bowl, when viewed from above, it connects a straight line along the front-rear direction of the bowl and the inner circumferential surface of the rim. A flush toilet formed in front of a position where the angle formed by the perpendicular line to the tangent at the center position of the width of the spout on the curve representing 45 degrees. [Selection diagram] Figure 4

Description

The present invention relates to a flush toilet that cleans the toilet bowl body with flush water.

Conventionally, a bowl part has a bowl-shaped dirt receiving surface and a rim part formed along the upper edge of the dirt receiving surface, and a first spout that sprays cleaning water onto the bowl part to form a swirling flow. A flush toilet equipped with a water spout and a second spout is known (for example, see Patent Document 1). In the flush toilet described in Patent Document 1, the inner circumferential surface of the rim portion is formed by a flat surface extending in a substantially vertical direction. In other words, the inner peripheral surface of the rim portion does not have an overhanging shape. Therefore, compared to a flush toilet with an overhanging rim portion, cleaning of the bowl portion is improved.

Furthermore, in the flush toilet described in Patent Document 1, the first spout is located toward the rear on one side across a line passing through the center of the bowl portion and extending in the front-rear direction, and the second spout is , on the downstream side of the area where the radius of curvature of the rim part is small, near the front of the other side across the line extending in the front-rear direction of the bowl part, which is the area where the washing water spouted from the first spout is most likely to scatter. It is located in a region where the radius of curvature becomes large. Therefore, the wash water spouted from the first water spout is guided by the wash water spouted from the second water spout. This suppresses the washing water spouted from the first water spout from scattering beyond the rim portion.
Furthermore, since the first spout located at the rear of the bowl part is a horizontally flat opening, it is possible to eliminate as much as possible the upward flow component of the wash water spouted from the first spout. can. As a result, even if the inner circumferential surface of the rim portion is formed by a flat surface extending in a substantially vertical direction, that is, even if the inner circumferential surface of the rim portion does not overhang, the first spout can be Splashing of the discharged washing water beyond the rim part is more effectively suppressed.

Japanese Patent Application Publication No. 2012-207503

However, in the conventional flush toilet described above, the first spout is formed at the rear of the bowl part, so the first spout and the user standing on the front side of the flush toilet face each other. become. In other words, the first spout is formed on the rear side of the bowl portion, which is a position that is easily visible to a user standing on the front side of the flush toilet. Therefore, there is a concern that the design of the flush toilet may deteriorate.

The present invention has been made in order to solve the above-mentioned problems, and aims to provide a flush toilet that can improve the design of the toilet bowl body while maintaining the washability and cleanability of the toilet bowl body. purpose.

In order to achieve the above object, a flush toilet according to one aspect of the present invention is a flush toilet that cleans the toilet main body with flush water, and includes a bowl-shaped waste receiving surface and an upper part of the waste receiving surface. A bowl portion having a rim portion formed along an edge so that its inner circumferential surface rises vertically, a water spout for spouting cleaning water onto the bowl portion to form a swirling flow, and a spout. A conduit that supplies cleaning water to the water inlet, a throttle channel is formed at the downstream end of the conduit, and the water outlet is a horizontally elongated opening, when viewed from above in the rear half of the bowl part. Formed in front of the position where the angle between a straight line along the front-rear direction of the bowl part and a perpendicular line to the tangent at the center position of the width of the spout on the curve representing the inner peripheral surface of the rim part is 45 degrees. has been done.

According to this configuration, in the rear half of the bowl part, when viewed from above, the line between the left and right center line of the bowl part and the perpendicular line to the tangent at the center position of the width of the spout on the curve representing the inner peripheral surface of the rim part. The spout is formed forward of the position where the angle is 45 degrees. Thereby, the width dimension that can be visually recognized by the user can be suppressed, making it difficult for the user to visually recognize the water spout. Therefore, the design of the toilet bowl main body can be improved.
Furthermore, since the throttle flow path is formed at the downstream end of the water conduit, the flow of water can be regulated while increasing the force of water spouted from the water spout. In addition, since the water spout is a horizontally elongated opening, the upward flow component of the cleaning water spouted from the water spout can be suppressed. Therefore, even in a rim portion that is easy to clean and has an inner circumferential surface that rises vertically, it is possible to improve the swirling properties of the swirling flow formed in the bowl portion.
In this way, the design of the toilet main body can be improved while maintaining the washability and cleanability of the toilet main body.

Further, in the flush toilet according to one aspect of the present invention, preferably, the size of the water spout in the vertical direction is smaller on the front side than on the rear side.

According to this configuration, the vertical size of the water spout is smaller on the front side than on the rear side, so the water spout is located in the front part that is further away from the headrace (more downstream). The cross section of the flow path is narrower than the cross section of the water outlet in the rear side portion. Thereby, the water spouted from the water spout flows forcefully in the tangential direction of the inner peripheral edge of the rim portion. Therefore, a swirling flow can be favorably generated within the bowl part while suppressing the washing water from scattering beyond the rim part.

Further, in the flush toilet according to one aspect of the present invention, preferably, a current plate is provided at the downstream end of the water conduit, and the plate surface extending along the flow direction is oriented vertically.

According to this configuration, a rectifier plate is provided at the downstream end of the water conduit, and the plate surface extending along the flow direction is oriented vertically, so that the flow of water spouted from the water outlet can be regulated. Can be done. Thereby, the flow of water spouted from the water spout can be stabilized. Therefore, a swirling flow can be favorably generated within the bowl part while suppressing the washing water from scattering beyond the rim part.

Further, the flush toilet according to one aspect of the present invention preferably includes a distributor that discharges flush water from a flush water source to a water conduit.

According to this configuration, since the distributor is provided for guiding and discharging the flush water from the flush water source to the water conduit, the shape of the flush toilet from the flush water source to the spout can be made simpler. Therefore, the mold for manufacturing the flush toilet can be simplified, and the productivity of the flush toilet can be improved.
Moreover, by providing the distributor, the flow of the cleaning water spouted from the water spout can be made more stable. Therefore, a swirling flow can be favorably generated within the bowl part while further suppressing the washing water from scattering beyond the rim part.

According to the present invention, in a flush toilet, the design of the toilet main body can be improved while maintaining the washability and cleanability of the toilet main body.

FIG. 1 is a top view of the flush toilet according to the first embodiment of the present invention. 2 is a sectional view taken along line II-II in FIG. 1. FIG. 3 is a sectional view taken along line III-III in FIG. 2. FIG. It is an explanatory view about the position of the spout concerning a first embodiment of the present invention. It is an explanatory view about a spout concerning a first embodiment of the present invention. (a) It is a figure when the opening of the spout concerning a first embodiment of the present invention is seen from the front. (b) It is a figure when the opening of the water spout concerning a first embodiment of the present invention is seen from the direction opposite to the opening of the water spout. FIG. 2 is a schematic diagram showing the flow of water in the flush toilet according to the first embodiment of the present invention. FIG. 3 is a plan sectional view of a flush toilet according to a second embodiment of the present invention. It is a front sectional view of the flush toilet concerning a third embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that in each drawing, similar components are denoted by the same reference numerals, and detailed explanations are omitted as appropriate.

(First embodiment)
<Configuration of flush toilet>
First, a flush toilet according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. Note that the following description will be made using the directions shown in the figures.

FIG. 1 is a top view of a flush toilet according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a cross-sectional view taken along line III--III in FIG.

As shown in FIGS. 1 and 2, the flush toilet 1 includes a toilet main body 2 made of ceramic or the like, and a tank device 4 that is a source of flush water. The tank device 4 is placed above the rear side of the toilet main body 2, and is connected to a water supply source (not shown) such as a water supply. When the operating lever or remote control (not shown) of this tank device 4 is operated, the water is flushed from the discharge port (not shown) of the tank device 4 to the supply port 6 opened on the upper surface of the central rear side of the toilet main body 2. Water is provided.
Note that in this embodiment, the tank device 4 functions as a water supply device.

A bowl part 8 is formed on the front side of the toilet main body 2, into which filth is discharged, and a water storage part 10 is formed below the bowl part 8. A predetermined amount of water is formed in the water storage section 10 . Note that the water level W0 shown in FIG. 2 is the initial water level of the stored water. An inlet 12a of a drain trap conduit 12 for discharging filth and the like to the outside of the flush toilet 1 is connected to the lower end of the water reservoir 10. The drain trap pipe 12 extends rearward from its inlet 12a, and its outlet 12b is connected to a discharge pipe (not shown) installed on the floor.

The bowl portion 8 has an approximately oval shape as a whole when viewed from above. The bowl portion 8 has a substantially symmetrical outer shape in the left-right direction. Further, the bowl portion 8 includes a bowl-shaped dirt receiving surface 14 and a rim portion 16 formed along the upper edge of the dirt receiving surface 14.

The dirt receiving surface 14 is formed in a mortar shape so as to gradually widen from its lower edge toward its upper edge. In other words, the dirt receiving surface 14 is formed so as to gradually expand from its lower edge toward its upper edge in the longitudinal cross section.

The rim portion 16 is formed in an annular shape along the upper edge of the dirt receiving surface 14, and its inner peripheral surface is formed to rise vertically. That is, the inner circumferential surface of the rim portion 16 is formed of a flat surface that extends substantially vertically from the upper edge of the dirt receiving surface 14 without overhanging toward the inside of the bowl portion 8 over the entire circumference. . Therefore, compared to the case where the inner circumferential surface of the rim part 16 overhangs, it is possible to reduce the blind area where dirt adheres, and improve the cleaning performance when cleaning the inner circumferential surface of the rim part 16. can be done.

Further, above the rim portion 16, a toilet seat (not shown) is placed. This toilet seat is provided in an annular shape along the rim portion 16. In addition, when viewed from above, the inner circumferential edge of the toilet seat protrudes inward of the bowl portion 8 from the inner circumferential surface of the rim portion 16 over substantially the entire circumference in the form of an eave.
Note that the entire circumference of the inner circumferential edge of the toilet seat does not need to protrude inside the bowl part 8 beyond the inner circumferential surface of the rim part 16, and the inner circumferential edge of the toilet seat near the upper part of the spout 18, which will be described later, It is sufficient that it protrudes inward of the bowl portion 8 from the inner circumferential surface in the form of an eave.
Further, a toilet lid (not shown) may be provided above the toilet seat.

As shown in FIG. 3, cleaning water is sprayed onto the inner circumferential surface of the rim portion 16 in the rear half of the bowl portion 8, which is the portion on the rear side of the center of the bowl portion 8 when viewed from above. A water spout 18 that forms a swirling flow is open on the dirt receiving surface 14. The water spout 18 is a horizontally elongated opening, that is, a flat opening that is long in the horizontal direction. Further, the water spout 18 is the only water spout formed on the inner circumferential surface of the rim portion 16 . In other words, the water spout 18 is the only water spout that spouts cleaning water into the bowl portion 8 and forms a swirling flow on the dirt receiving surface 14 .
Note that the position where the water spout 18 is opened will be described in detail later.

A water conduit 20 for supplying flushing water to the water spout 18 is formed in the upper part of the rear side of the toilet main body 2 . The water conduit 20 is a flow path extending forward from the supply port 6 and connects the supply port 6 and the water spout 18 . Further, the bottom surface of the water conduit 20 is inclined downward from the supply port 6 toward the water spout 18 side (front side). In addition, in order to prevent water from remaining in the headrace 20, the cul-de-sac-like flow path formed by the outer edge of the bottom surface of the headrace 20 and the partition wall is sloped downward toward the water outlet 18. The bottom surface of the downstream end of the headrace 20 is formed at the lowest height among the bottom surfaces of the headrace 20 . The cleaning water that has flowed into the supply port 6 from the tank device 4 flows to the water spout 18 through this water conduit 20 .

Furthermore, a throttle channel 22 is formed at the downstream end of the water conduit 20, the cross-sectional area of which is narrowed from upstream to downstream. In this embodiment, the throttle channel 22 is a channel whose width in the horizontal direction is narrowed, and is formed on the downstream side of a rectifying plate 24, which will be described later.
Note that the throttle channel 22 may be formed to narrow the channel width in the vertical direction or other directions instead of the channel width in the horizontal direction. Further, the channel width may be narrowed not only in a single direction but also in a plurality of directions.

Furthermore, a flow regulating plate 24 is provided at the downstream end of the water conduit 20, and the plate surface extending along the flow direction is vertically oriented. The current plate 24 is a plate-shaped portion extending from the rear end of the water spout 18 toward the inside of the water conduit 20 . As shown in FIG. 3, in a plan cross-sectional view, the downstream side of the current plate 24 is connected to the rear edge of the water spout 18, and forms an acute angle along with the surrounding wall surface that forms the rear edge of the water spout 18. form a corner. Washing water flowing through the water conduit 20 is guided to the water outlet 18 by the rectifying plate 24 . Further, the upper end and the lower end of the current plate 24 are formed continuously with the upper surface and the bottom surface forming the flow path of the water conduit 20. That is, the current plate 24 is provided as a part of the toilet main body 2.

<About the spout>
Next, the spout according to the first embodiment of the present invention will be described in detail with reference to FIGS. 4 to 6.

FIG. 4 is an explanatory diagram of the position of the water outlet according to the first embodiment of the present invention. FIG. 5 is an explanatory diagram of the water spout according to the first embodiment of the present invention. FIG. 6A is a front view of the opening of the water spout according to the first embodiment of the present invention, as viewed from the front. FIG. 6(b) is a front view of the opening of the water spout according to the first embodiment of the present invention when viewed from a direction facing the opening of the water spout.

Note that FIGS. 4 and 5 are cross-sectional views taken along the line III-III in FIG. 2.
In addition, in FIG. 4 showing a top view of the flush toilet 1, the center position of the bowl part 8 is C1, the center position of the width of the spout 18 is C2, and a straight line passing through the center position C1 of the bowl part 8 and along the front-rear direction ( L is the tangent at the center position C2 of the width of the spout 18 on the curve representing the inner peripheral surface of the rim portion 16; T is the perpendicular to the tangent P; The angle is indicated by R. Here, the center position C1 of the bowl portion 8 is a point approximately in the middle of a line connecting the front end and the rear end of the inner circumferential surface of the rim portion 16.
Furthermore, in FIGS. 5 and 6, the width of the spout 18 when viewed from the front (the front of the flush toilet 1) is B1, and the spout 18 is positioned in the direction along the perpendicular T (directly along the spout 18). The width of the spout 18 when viewed from the opposite direction is indicated by B2.
In addition, in FIG. 6, the opening area of the water spout 18 when viewed from the front is indicated by S1, and the opening area of the water spout 18 when viewed from the direction along the perpendicular T is indicated by S2. There is. That is, the opening area S1 is the apparent opening area of the water spout 18 when viewed from the front, and the opening area S2 is the substantial opening area of the water spout 18.

As shown in FIGS. 4 and 5, the spout 18 is located at the left-right center line L of the bowl part 8 in the rear half of the bowl part 8 (the part on the rear side of the center position C1 of the bowl part 8). It is formed forward of a position where the angle R formed by the perpendicular T and the tangent P at the center position C2 of the width of the spout 18 on the curve representing the inner circumferential surface of the rim portion 16 is 45 degrees. In this embodiment, the water spout 18 is formed at a position where the angle R between the left-right center line L and the perpendicular T is 45 degrees when viewed from above.

Moreover, in the vertical direction size of the spout 18, the front side is smaller than the rear side. Specifically, the water spout 18 is formed such that the length of the opening in the vertical direction gradually decreases from the rear side to the front side (see FIG. 6). In this embodiment, the water spout 18 opens at the right side of the rim section 16 in the rear half of the bowl section 8, and its length in the vertical direction is on the left side (the right side in FIGS. 6(a) and 6(b)). It gradually becomes shorter from the right side (to the left side). Further, the water spout 18 has a substantially horizontal trapezoidal shape, and has a substantially symmetrical shape in the vertical direction. Therefore, the water spout 18 has a long side on the rear side, a short side on the front side, and an upper and lower oblique side as sides forming the opening.
Further, the water spout 18 is formed such that the lower end of the water spout 18 is in contact with the upper edge of the dirt receiving surface 14 (the boundary between the dirt receiving surface 14 and the rim portion 16). Therefore, the cleaning water can be uniformly spouted from the spout 18 to the dirt receiving surface 14. Furthermore, since the water spout 18 is opened on the inner circumferential surface of the rim portion 16 that stands up in the vertical direction, the water spout 18 can be made difficult to see when viewed from above, and the design can be improved.

Here, since the water spout 18 is formed at a position where the angle R is 45 degrees when viewed from above, the width of the water spout 18 when looking at the water spout 18 from the front and the opening of the water spout 18 The width of the water spout 18 when viewed from the opposite direction (direction along the perpendicular line T) is different. Specifically, the width B1 of the water spout 18 when viewed from the front is wider than the width B2 when the water spout 18 is viewed from the direction facing the opening of the water spout 18 (directly facing direction). is smaller. More specifically, since the water spout 18 is formed at a position where the angle R is 45 degrees when viewed from above, the ratio of the sizes of B1 and B2 is approximately "B1:B2=1:1.4 (root (equivalent to 2).

Further, as shown in FIG. 6, the direction when the spout 18 is viewed from the front and the direction when the spout 18 is viewed from the direction opposite to the opening of the spout 18 are both directions on a horizontal plane. Therefore, the length of the water spout 18 in the vertical direction does not substantially change when viewed from the front and when viewed from the direction facing the opening of the water spout 18. Therefore, the ratio of the opening area S1 of the water spout 18 when looking at the water spout 18 from the front to the opening area S2 when looking at the water spout 18 from the direction opposite to the opening of the water spout 18 is , that is, the ratio of the widths B1 and B2. As mentioned above, the ratio of the width B1 and the width B2 is approximately "B1:B2=1:1.4", so the ratio of the opening area S1 and the opening area S2 of the water spout 18 is approximately , "S1:S2=1:1.4". In other words, the opening area S1 of the water spout 18 when viewed from the front is approximately 70% of the opening area S2 when the water spout 18 is viewed from the direction opposite to the opening of the water spout 18. The size will be .

In this way, the opening area S1 of the spout 18 when viewed from the front is larger than the opening area S2 of the spout 18 when viewed from the direction opposite to the opening of the spout 18. small. Here, if the water spout is formed at the rear end of the rim portion 16, the opening area of the water spout when viewed from the front will be the same as the opening area S2 of the water spout 18. . In other words, when looking from the front, the water spout 18 formed at a position where the angle R is 45 degrees when viewed from above, compared to when the water spout formed at the rear end of the rim portion 16 is viewed from the front. The spout looks smaller in this case.
In addition, in the rear half of the bowl part 8, the further forward the position of the water outlet 18 is than the position where the angle R between the left and right center line L and the perpendicular T is 45 degrees when viewed from above, the more the water is projected forward. The opening area S1 of the water spout 18 becomes smaller, that is, the water spout 18 appears smaller when viewed from the front.

In the present embodiment, a case has been described in which the spout 18 is located at a position where the angle R between the left and right center line L and the perpendicular T is 45 degrees when viewed from above. It is more preferable that the water spout 18 is located forward of a position where the angle R between the left and right center line L and the perpendicular T is 60 degrees when viewed from above.
When the water spout 18 is formed at a position where the angle R is 60 degrees when viewed from above, the width B1 of the water spout 18 when looking at the water spout 18 from the front, and the width B1 of the water spout 18 from the direction facing the opening of the water spout 18 When looking at the water spout 18, the width ratio of the water spout 18 is "B1:B2=1:2". Therefore, the ratio of the opening area S1 of the water spout 18 when looking at the water spout 18 from the front and the opening area S2 of the water spout 18 when looking at the water spout 18 from the direction opposite to the opening of the water spout 18 is approximately , "S1:S2=1:2". In other words, compared to the opening area S2 of the spout 18 when viewed from the direction opposite to the opening of the spout 18, the opening area S1 of the spout 18 when viewed from the front is , the size is about 50%.
In this way, if the position of the water spout 18 is on the front side of the position where the angle R is 60 degrees, the opening area S1 of the water spout 18 when looking at the water spout 18 from the front is equal to the opening area of the water spout 18. Since the opening area S2 of the water spout 18 when viewed from the direction facing the water spout 18 is less than half, it is more preferable from the viewpoint of obtaining a high design quality.

<Operation and action>
Next, with reference to FIG. 7, the operation and effect of the flush toilet according to the first embodiment of the present invention will be described.

FIG. 7 is a schematic diagram showing the flow of water in the flush toilet according to the first embodiment of the present invention.
Note that FIG. 6 is a cross-sectional view taken along line III-III in FIG. 2.

As shown in FIG. 7, the wash water discharged from the tank device 4 to the supply port 6 of the toilet main body 2 flows into the water conduit 20. The cleaning water that has flowed into the water conduit 20 from the supply port 6 flows forward toward the water spout 18 . At this time, since the flow straightening plate 24 is provided at the downstream end of the headrace 20, the wash water flowing through the headrace 20 flows while being guided toward the water outlet 18 by the flow straightening plate 24.
In this way, the flow straightening plate 24 whose plate surface extending along the flow direction is oriented vertically is provided at the downstream end of the water conduit 20, so that the flow of water can be collected toward the water outlet 18. It is possible to direct the flow of water spouted from the spout 18. Thereby, the flow of water spouted from the water spout 18 can be stabilized. Therefore, even if the inner circumferential surface of the rim portion 16 is formed to stand up in the vertical direction, the cleaning water can be swirled into the bowl portion 8 while suppressing the washing water from scattering beyond the rim portion 16. A good flow can be generated.

Further, since the throttle channel 22 is formed at the downstream end of the water conduit 20, the wash water flowing toward the water outlet 18 becomes a stable flow, and the force of the wash water increases. The cleaning water whose water force has been increased through the throttle channel 22 is discharged from the water spout 18 to the bowl portion 8, and a swirling flow is formed in the bowl portion 8 by the cleaning water spouted from the water spout 18.
In this way, since the throttle flow path 22 is formed at the downstream end of the water conduit 20, the flow of the water spouted can be regulated while increasing the force of the cleaning water spouted from the water spout 18. In addition, since the water spout 18 is a horizontally elongated opening, the upward flow component of the cleaning water spouted from the water spout 18 can be suppressed. Therefore, even if the inner circumferential surface of the rim portion 16 is formed to stand up in the vertical direction as in this embodiment, washing water can be prevented from scattering beyond the rim portion 16. , the swirling properties of the swirling flow formed in the bowl portion 8 can be improved. Further, even if the water spout 18 formed on the inner circumferential surface of the rim portion 16 is one hole as in this embodiment, the throttling channel 22 prevents the cleaning water from scattering beyond the rim portion 16. It is possible to improve the swirling properties of the swirling flow formed in the bowl portion 8 while suppressing the occurrence of the swirling.

Furthermore, since the vertical opening size of the water spout 18 is smaller on the front side than on the rear side, the front side is located further away from the water conduit 20 (more downstream). The flow path cross section of the water spout 18 in the portion is narrower than the flow path cross section of the water spout 18 in the rear side portion. As a result, the cleaning water discharged from the spout 18 to the bowl portion 8 flows vigorously in the tangential direction of the inner peripheral surface of the rim portion 16. Therefore, even if the inner circumferential surface of the rim portion 16 is formed to stand up in the vertical direction as in the present embodiment, washing water can be prevented from scattering beyond the rim portion 16. , a swirling flow can be favorably generated within the bowl portion 8.

Moreover, according to the flush toilet 1 according to the first embodiment of the present invention described above, in the rear half of the bowl part 8, when viewed from above, the left-right center line L of the bowl part 8 and the inner circumferential surface of the rim part 16 The water spout 18 is formed forward of the position where the angle between the perpendicular T and the tangent P at the center position C2 of the width of the water spout 18 on the curve representing the curve is 45 degrees. Thereby, the width dimension through which the user can visually recognize the water spout 18 can be suppressed, making it difficult for the user to visually recognize the water spout 18. Therefore, the design of the toilet main body 2 can be improved.
In addition, the water spout 18 that spews cleaning water into the bowl portion 8 to form a swirling flow can form a sufficient swirling flow with only one hole, so the flow from the supply port 6 to the water spout 18 is The flow path, for example, the water conduit 20 can be easily configured. Therefore, the structure of the toilet main body 2 can be made simpler. In addition, there is only one water spout 18 that spouts cleaning water to the bowl portion 8 to form a swirling flow.In other words, since only the water spout 18 is provided on the inner peripheral surface of the rim portion 16, the rim The cleaning performance of the portion 16 can be further improved.

Further, according to the flush toilet 1 according to the first embodiment of the present invention described above, the toilet seat is placed above the rim portion 16, and the inner peripheral edge of the toilet seat is located inside the rim portion 16 when viewed from above. It protrudes further inside the bowl portion 8 than the circumferential surface. Thereby, when the bowl part 8 is viewed from above, the water spout 18 provided on the inner peripheral surface of the rim part 16 is hidden in the shadow of the toilet seat, which protrudes inward from the inner peripheral surface of the rim part 16. That is, when a user standing on the front side of the flush toilet 1 looks inside the bowl portion 8, for example, the water spout 18 provided on the inner peripheral surface of the rim portion 16 is obscured by the toilet seat. Therefore, it becomes difficult for the user to visually recognize the water spout 18, and the design of the flush toilet 1 can be improved.

As described above, according to the flush toilet 1 according to the first embodiment of the present invention described above, the design of the toilet main body 2 is improved while maintaining the washability and cleanability of the toilet main body 2 with a simpler configuration. can be improved.

(Second embodiment)
Next, with reference to FIG. 8, a flush toilet according to a second embodiment of the present invention will be described.

FIG. 8 is a sectional view of a flush toilet according to a second embodiment of the present invention.
Note that FIG. 8 is a cross-sectional view taken along line III-III in FIG. 2.

As shown in FIG. 8, the flush toilet 1 according to the second embodiment of the present invention includes a resin distributor 26 that guides and discharges flush water from a tank device 4, which is a flush water source, into a water conduit 20. ing. The distributor 26 is a tubular member that constitutes a flow path for cleaning water, and is provided inside the water conduit 20, and has an inlet 26a that communicates with the tank device 4 that is a cleaning water source, and a distributor from the cleaning water source. It has an outlet 26b for discharging the cleaning water supplied into the water pipe 26 into the water conduit 20.

The inlet 26a of the distributor 26 is located at the supply port 6 (see FIG. 1), is connected to an outlet (not shown) of the tank device 4, and communicates with the outlet of the tank device 4. Further, the outlet 26b of the distributor 26 opens downstream of the rectifying plate 24 and upstream of the throttle channel 22. Therefore, the current plate 24 functions as a guide portion for positioning the outlet 26b of the distributor 26. In this way, the distributor 26 is arranged in a substantially straight line from the supply port 6 facing the discharge port of the tank device 4 toward the throttle channel 22.

When the supply of cleaning water from the tank device 4, which is a source of cleaning water, starts, the cleaning water flows into the inlet 26a of the distributor 26 from the outlet of the tank device 4. The cleaning water that has flowed in from the inlet 26a of the distributor 26 flows through the channel within the distributor 26 and is discharged from the outlet 26b to the water conduit 20. The cleaning water discharged from the outlet 26b of the distributor 26 to the water conduit 20 passes through the throttle channel 22 and is discharged from the water spout 18 to the bowl portion 8.

As described above, since the flush toilet 1 according to the second embodiment includes the distributor 26, in addition to the effects of the first embodiment described above, the flush toilet 1 from the flush water source to the spout 18 can be For example, the shape of the water conduit 20 can be made simpler. Therefore, the mold for manufacturing the flush toilet 1 can be simplified, and the productivity of the flush toilet 1 can be improved.
Moreover, by providing the distributor 26, the flow of water within the water conduit 20 can be regulated within the conduit by the distributor 26. Thereby, the flow of cleaning water discharged from the water spout 18 can be more stabilized. Moreover, since the distributor 26 is made of resin with higher dimensional accuracy than ceramic, it is possible to suppress variations in the water discharge flow rate between the flush toilets 1. Therefore, a swirling flow can be favorably generated in the bowl part 8 while further suppressing the washing water from scattering beyond the rim part 16.

In addition, when the distributor 26 is provided like the flush toilet 1 according to the second embodiment, the current plate 24 may not be provided.
Alternatively, the flow path of the distributor 26 may be extended, and the outlet 26b of the distributor 26 may be provided at a position that substantially coincides with the water spout 18. At this time, the throttle channel 22 may be formed in a channel inside the distributor 26.
Furthermore, the flow path of the distributor 26 is shortened, and the outlet 26b of the distributor 26 is rectified so that the cleaning water discharged from the outlet 26b of the distributor 26 is guided to the rectifier plate 24 and flows toward the water outlet 18. It may be provided upstream of the plate 24.

(Third embodiment)
Next, with reference to FIG. 9, a flush toilet according to a third embodiment of the present invention will be described.

FIG. 9 is a sectional view of a flush toilet according to a third embodiment of the present invention.
Note that FIG. 9 is a cross-sectional view taken along line VI-VI in FIG. 4.

As shown in FIG. 9, the flush toilet 1 according to the third embodiment of the present invention includes a spout cover 28 that hides the spout 18. This spout cover 28 is provided on the inner peripheral surface of the rim portion 16. The spout cover 28 also includes a plate-shaped cover body 28a that covers and hides the entire spout 18, and a pivot support 28b that is provided on the inner peripheral surface of the rim portion 16 and at the upper end of the cover body 28a. ing. The upper edge of the cover body 28a is rotatably supported by a shaft support 28b in the opening direction of the water spout 18 (inward direction of the rim portion 16) with the lateral direction as the rotation axis direction.

When cleaning water is not being supplied from the tank device 4, the cover main body 28a is in a state of being weighed down by its own weight, and the cover main body 28a is attached so as to cover the spout 18 and approach a concealed state. Forced. Therefore, when cleaning water is not being supplied from the tank device 4, the spout 18 is hidden and closed by the cover body 28a of the spout cover 28.
Note that the spout cover 28 may be configured to support the cover body 28a by the shaft support 28b so as to urge the cover body 28a in a direction toward the inside of the rim portion 16. In this case, a spring or the like is provided on the shaft support 28b as means for biasing the cover body 28a.

Also, when flush water is supplied from the tank device 4 to the toilet main body 2 and water flows from the water conduit 20 to the spout 18, the force of the water flowing from the water conduit 20 to the spout 18 causes the shaft support 28b to become an axis. The cover main body 28a rotates toward the inside of the rim portion 16, and the spout 18 becomes open. Cleaning water is then spouted from the water spout 18 to the bowl portion 8. When the supply of cleaning water from the tank device 4 is stopped, the cover body 28a becomes weighed down by its own weight, and is biased to cover and conceal the spout 18, and the cover body 28a The spout 18 is hidden and closed.

In this way, the flush toilet 1 according to the third embodiment includes the spout cover 28 that hides the spout 18, so in addition to the effects of the first embodiment described above, the flush toilet 1 can more securely close the spout 18. Can be hidden. This makes it difficult for the user to visually recognize the spout 18, and the design of the flush toilet 1 can be further improved.

In addition, when the water spout cover 28 is provided as in the flush toilet 1 according to the third embodiment, the water spout 18 can be hidden more reliably, so the water spout 18 can be hidden behind the bowl part 8. In the latter half, it does not need to be formed forward of the position where the angle R between the left and right center line L and the perpendicular T is 45 degrees when viewed from above. For example, in the rear half of the bowl part 8, the spout 18 is located behind a position where the angle R between the left and right center line L and the perpendicular T is 45 degrees when viewed from above (the side where the angle R is smaller than 45 degrees). ) may be formed.

(Modified example)
Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above.

For example, although a configuration has been described in which the tank device 4 functions as a water supply device, a water supply device other than the tank device 4, such as a flush valve, may be provided.

Furthermore, a jet water spouting hole may be provided in the water storage portion 10 or the dirt receiving surface 14 for discharging cleaning water and efficiently discharging dirt from the bowl portion 8 to the drain trap conduit 12.

Moreover, although the baffle plate 24 has been described as being provided integrally with the toilet bowl body 2, it may be constructed separately from the toilet bowl body 2. Further, for example, the current plate 24 may be provided so as to stand up from the bottom surface of the water conduit 20.

In addition, although the configuration has been described in which the angle R is the angle formed between the left and right center line L of the bowl part 8 and the perpendicular line T, it does not have to be the angle formed between the left and right center line L of the bowl part 8 and the perpendicular line T. Any angle formed by a straight line along, that is, a line parallel to the left-right center line L and the perpendicular T is sufficient.

Furthermore, although the distributor 26 has been described as being made of resin, it may be made of any material that can restrict the flow of water within the water conduit 20 into the conduit by the distributor 26.

The elements of each of the embodiments described above can be combined to the extent technically possible, and combinations of these are also included within the scope of the present invention as long as they include the features of the present invention.

1 Flush toilet 2 Toilet main body 4 Tank device 6 Supply port 8 Bowl part 10 Water storage part 12 Drainage trap pipe line 12a Inlet 12b Outlet 14 Filth receiving surface 16 Rim part 18 Water spout 20 Water conduit 22 Throttle channel 24 Straightening plate 26 Distributor 26a Inlet 26b Outlet 28 Spout cover 28a Cover body 28b Axial support B1, B2 Width of the spout projected forward C1 Center position of the bowl C2 Center position of the width of the spout L Left and right center line P Tangent line R Angle S1 , S2 Opening area of the water outlet projected forward T Perpendicular line W0 Initial water level

Claims (4)

A flush toilet that cleans the toilet body with flush water,
A bowl portion having a bowl-shaped dirt receiving surface, and a rim portion formed along the upper edge of the dirt receiving surface so that its inner peripheral surface rises in the vertical direction;
a water spout that spouts cleaning water to the bowl portion to form a swirling flow;
A water conduit that supplies cleaning water to the spout,
A throttle channel is formed at the downstream end of the water conduit,
The water spout is a horizontally elongated opening, and in the rear half of the bowl part, the water spout is located on a straight line along the front-rear direction of the bowl part and on a curve representing the inner circumferential surface of the rim part when viewed from above. The flush toilet is formed forward of the position where the angle formed by the perpendicular to the tangent at the center of the width is 45 degrees. The flush toilet according to claim 1, wherein the vertical size of the water spout is smaller on the front side than on the rear side. The flush toilet according to claim 1 or 2, wherein the downstream end of the water conduit is provided with a rectifier plate that extends along the flow direction and has a vertically oriented plate surface. The flush toilet according to any one of claims 1 to 3, further comprising a distributor that discharges flush water from a flush water source to the water conduit.

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