JP2024046456A - Toilet device - Google Patents

Abstract

To provide a technique capable of keeping a toilet bowl clean by washing the same with washing water.SOLUTION: A toilet device may include: a toilet bowl; and a discharge part that flows cleaning water to an upper edge of the toilet bowl by discharging the cleaning water in the direction along the upper edge.SELECTED DRAWING: Figure 10

Description

TECHNICAL FIELD The technology disclosed herein relates to toilet devices.

Patent Document 1 discloses a flush toilet bowl having a spiral guide flow path that controls the direction of water flowing inside the bowl.

Japanese Patent Application Publication No. 2010-265693

When a toilet is used, dirt can accumulate around the top edge of the toilet bowl. This specification provides a technology that keeps the toilet bowl clean by cleaning with flushing water.

In a first aspect of the technology disclosed herein, the toilet device includes a toilet bowl and a discharge device that discharges flush water in a direction along an upper edge of the toilet bowl and causes the flush water to flow toward the upper edge. It may also include a section.

In a second aspect, in the first aspect described above, the discharge portion may direct the cleaning water onto the upper edge over at least 1/4 of the total length of the upper edge.

In a third aspect, in the second aspect, the discharge portion may direct the cleaning water onto the upper edge over the entire length of the upper edge.

In a fourth aspect, in any one of the first to third aspects, the discharge section may flow the cleaning water at a flow rate of 0.5 m/s or more at the upper edge.

In a fifth aspect, in any one of the first to fourth aspects, the discharge portion may direct the flushing water onto the upper edge of at least one end of the toilet bowl in the front-to-rear direction.

In a sixth aspect, in any one of the first to fifth aspects, the discharge part is a discharge port that discharges the wash water into the toilet bowl, and the discharge part is a discharge port that discharges the wash water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl, and the discharge part is a discharge port that discharges the washing water into the toilet bowl. The washing water may be provided with the discharge port disposed on a side, and the wash water discharged from the discharge port may flow to the upper edge on the other side in the front-rear direction of the toilet bowl.

In a seventh aspect, in any one of the first to sixth aspects, the discharge portion has a discharge port that discharges the flushing water into the toilet bowl, and in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl, the toilet bowl may be configured with at least one of a curved shape and a straight shape that slopes downward toward the water surface of the accumulated water in front of the accumulated water in the toilet bowl.

In an eighth aspect, in any one of the first to seventh aspects, the discharge portion may include a discharge port that discharges the cleaning water toward the upper edge.

In a ninth aspect, in any one of the first to eighth aspects, the discharge part may include discharge ports for discharging the washing water on both sides of the toilet bowl in the left-right direction. .

In a tenth aspect, in any one of the first to ninth aspects, the toilet device includes a protrusion that projects above the upper edge of the toilet bowl from the upper edge and above the toilet bowl. The discharge part may include a part, and the discharge part may flow the washing water onto the lower surface of the protrusion part.

In an eleventh aspect, in any one of the first to tenth aspects, when the toilet bowl is viewed from above, a first area of a water surface of the water stored in the toilet bowl; The ratio of the second area of the stored water other than the water surface may be from 4:6 to 10:0.

In a twelfth aspect, in any one of the first to eleventh aspects, the discharge section may flow the cleaning water at a surface flow velocity of 0.5 m/s or more. .

In a thirteenth aspect, in any one of the first to twelfth aspects, the discharge unit may discharge flushing water in a plurality of directions to flow flushing water onto the surface of the toilet bowl, and may flow flushing water onto the surface of the toilet bowl by at least one of using the pressure of flushing water supplied from a supply pipe extending from the clean water path to cause flushing water to flow onto the surface of the toilet bowl, and flushing water pressurized by a pump to flow onto the surface of the toilet bowl, discharge the flushing water in a first direction of the plurality of directions to flow the flushing water onto a first region of the surface of the toilet bowl, and discharge the flushing water in a second direction of the plurality of directions to flow the flushing water onto a second region of the surface of the toilet bowl that is different from the first region.

Details and further improvements of the technology disclosed in this specification are explained in the "Description of Embodiments" below.

1 is a perspective view of a toilet device according to an embodiment; FIG. 2 shows a cross-sectional view of the toilet body and toilet seat taken at the center in the left-right direction and perpendicular to the left-right direction. FIG. 3 shows an end view of the toilet bowl taken along the line III-III in FIG. 2 . 4 shows a cross-sectional view of the inside of the toilet bowl and the upper flange portion taken along the line IV-IV in FIG. 2 . FIG. 2 is a plan view of the toilet body and toilet seat of the first embodiment. FIG. 1 shows a plan view of the toilet main body of the first embodiment. FIG. 3 shows a plan view of the toilet main body representing the first region of the first embodiment. FIG. 2 shows a plan view of the toilet body illustrating the second region of the first embodiment. FIG. 2 shows a plan view of the toilet body illustrating a third region of the first embodiment. A diagram illustrating the direction of cleaning water discharged from the discharge port of the first embodiment is shown. 4A to 4C are diagrams for explaining the direction of cleaning water discharged from a discharge port in the first embodiment. A cross-sectional view of the toilet main body and the toilet seat taken at the center in the left-right direction and perpendicular to the left-right direction. FIG. 2 shows a schematic block diagram of a discharge section of the first embodiment. FIG. 11 is a schematic block diagram of a discharge section according to a second embodiment. 13A and 13B are diagrams for explaining the direction of cleaning water discharged from a discharge port in the third embodiment. 13 shows an enlarged cross-sectional view of a region AR in FIG. 12 according to a modified example. An enlarged sectional view of the region AR in FIG. 12 in a modified example is shown.

(Configuration of the toilet device 10)
As shown in Fig. 1, the toilet device 10 is a flush toilet. The toilet device 10 is fixed to a floor surface when in use. The toilet device 10 may be, for example, a so-called wall-hung flush toilet that is fixed to a wall.

The toilet device 10 includes a toilet portion 12, a toilet seat 14, a functional portion 16, a tank 18 (see FIG. 2), and a discharge portion 40 (see FIG. 13). As shown in FIG. 1, the toilet portion 12 includes a toilet body 20 and an upper end flange portion 30. The toilet body 20 is made of ceramic. The toilet body 20 includes a toilet bowl 21 that receives waste. The toilet body 20 includes a tank 18 below the toilet bowl 21. The tank 18 stores flushing water for flushing the toilet bowl 21. The toilet device 10 includes a flush button (not shown) electrically connected to the tank 18. When the flush button is operated by a user, flushing water is discharged from the tank 18 through the discharge portion 40 into the toilet bowl 21. The functional portion 16 may have functions such as an opening and closing function that automatically opens and closes the toilet lid (not shown) in accordance with the user's actions, a local cleaning function, a hot air drying function, and a deodorizing function.

In the toilet device 10, the flush water in the tank 18 may be supplied to the toilet bowl 21 by operating a lever disposed on the toilet device 10, in addition to operating the flush button. The cleaning button may be located on a remote controller that is electrically connected to the tank 18 either by wire or wirelessly. The wash water in the tank 18 may be supplied to the toilet bowl 21 without any operation by the user. For example, when the user is not detected by the sensor, the flushing water in the tank 18 may be supplied to the toilet bowl 21.

The toilet seat 14 is attached to the toilet body 20 so that it can be opened and closed. A user sits on the toilet seat 14. The toilet seat 14 has an opening 14a.

Hereinafter, the direction in which the toilet seat 14 and the functional section 16 are lined up will be referred to as the front-rear direction. In the front-rear direction, the side on which the toilet seat 14 is arranged with respect to the functional part 16 is referred to as the front side in the front-rear direction, and the opposite side is referred to as the rear side. The horizontal direction orthogonal to the front-rear direction is referred to as the left-right direction. In the left-right direction, the back side of the paper in FIG. 1 is referred to as the right side, and the front side of the paper in FIG. 1 is referred to as the left side. The left and right directions correspond to the left and right directions as seen from the user who is directly facing the toilet device 10. The vertical direction orthogonal to the front-back direction is referred to as the up-down direction. In the vertical direction, the side of the toilet main body 20 on which the tank 18 is arranged is referred to as the lower side, and the opposite side is referred to as the lower side.

The toilet bowl 21 has a generally downwardly depressed shape. The toilet main body 20 includes a drainage section 32 disposed at the lower end of the toilet bowl 21, a drain pipe 36 communicating with the drainage section 32, and a drain port 34 opening into the drainage section 32. The drainage portion 32 is depressed downward from the lower end portion 21u of the toilet bowl 21. The drain section 32 communicates with a drain pipe 36 via a drain port 34. The drain pipe 36 extends upward from the drain port 34. The drainage portion 32 is bent downward at the curved position 36a and extends downward. The drain pipe 36 extends to the outside of the toilet portion 12.

The drain port 34 is arranged behind the opening 14a of the toilet seat 14 in the front-rear direction. The drain port 34 may be arranged further back than 3/8 area from the rear end of the opening 14a of the toilet seat 14 when the opening 14a of the toilet seat 14 is divided into eight equal parts in the front-rear direction (see FIG. 2). . The drain port 34 can be placed behind the position where feces excreted by the user falls.

At the top of the toilet bowl 21, an upper edge 21e that defines the upper end of the toilet bowl 21 goes all the way around. An upper flange portion 30 is arranged. The upper flange portion 30 is placed on the upper end of the toilet body 20. At the top of the toilet bowl 21, the upper flange portion 30 goes all the way around the upper edge 21e of the toilet bowl 21. The upper flange portion 30 protrudes inward from the upper edge 21e of the toilet bowl 21 so as to face the surface of the toilet bowl 21 from the upper edge 21e of the toilet bowl 21. The lower surface 30a of the upper flange portion 30 is arranged parallel in the front-to-rear and left-to-right directions.

(Toilet bowl shape)
Flush water supplied to the toilet bowl 21 is stored in the toilet bowl 21. The stored water is stored up to a curved position 36a of the drain pipe 36. The surface of the toilet bowl 21 has a stored water area 21b below the water level WF of the stored water, and an upper area 21c above the water level WF.

As shown in FIG. 6, the upper region 21c goes around the periphery of the water surface WF above the water surface WF. The upper region 21c includes a forward region 22, a lateral region 26, and a rear region 24. The forward region 22 is depicted with multiple dots in FIG. 6. The forward region 22 is a region in front of the front end WF1 of the water surface WF. The lateral region 26 is colored gray in FIG. 6 and is a region that extends rearward from the rear end of the forward region 22 along both the left and right ends of the water surface WF. The lateral region 26 extends to the rear end WF2 of the water surface WF. The rear region 24 is depicted with multiple parallel horizontal lines in FIG. 6 and is a region that connects the rear ends of the lateral regions 26 on both the left and right sides along the rear end WF2 of the water surface WF.

FIG. 2 shows a sectional view perpendicular to the left-right direction at the center of the toilet bowl 21 in the left-right direction. In a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21, the front region 22 has a linear shape 22a that slopes backward, that is, toward the water surface WF as it progresses downward from the upper edge 21e; It has a curved shape 22b that curves downward from the lower end to the water surface WF, that is, the lower end of the upper region 21c. In a "curved shape that curves downward", in a cross section perpendicular to the left-right direction, the line segment representing the surface located between any two points of the curved shape is located below the straight line connecting the two arbitrary points. do. The linear shape 22a extends in the tangential direction of the curved shape 22b. The boundary between the linear shape 22a and the curved shape 22b is smooth and continuous without any step. As shown in FIG. 3, the front region 22 has a curved shape that curves downward in a cross section perpendicular to the front-back direction at an arbitrary position in the front-back direction. In the front region 22, the same is true in a cross section perpendicular to the left-right direction at any position in the left-right direction of the toilet bowl 21. The front region 22 does not have a shape that bulges upward.

In a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21, the water storage area 21b located below the front area 22 has a linear shape that slopes backward as it moves downward, that is, toward the water surface WF. .

The linear shape 22a has a plane that slopes downward from the upper edge 21e toward the water surface WF in a cross section perpendicular to the front-rear direction at any position in the front-rear direction. The curved shape 22b curves downward from the bottom end of the linear shape 22a to the water surface WF, i.e., the bottom end of the upper region 21c, in a cross section perpendicular to the front-rear direction at any position in the front-rear direction.

In a modified example, in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21, the front region 22 may have a shape other than the straight shape 22a and the curved shape 22b. For example, the front region 22 may have a straight shape 22a, a curved shape that curves downward at an intermediate position from the lower end of the straight shape 22a to the water surface WF, and a straight shape that slopes toward the water surface WF as it progresses downward from the lower end of the curved shape to the water surface WF. For example, the front region 22 may have a curved shape that curves downward from the upper end edge 21e. In the front region 22, curved shapes with different curvatures may be arranged continuously. The front region 22 may be composed of only one of the straight shape 22a and the curved shape 22b. The same applies to the front region 22 in a cross section perpendicular to the front-rear direction. When the front region 22 is composed of only the curved shape 22b and the water storage region 21b is composed of a straight shape, the radius of curvature of the front region 22 is smaller than the radius of curvature of the water storage region 21b. In a modified example, the water storage area 21b located below the front area 22 in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21 may have a curved shape that curves downward. In this case, the radius of curvature of the front area 22 in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21 may be smaller than or equal to the radius of curvature of the water storage area 21b.

As shown in FIG. 3, the side region 26 has a curved shape that continues from the front region 22 and curves downward at the front portion in a cross section perpendicular to the front-rear direction. The curved shape extends downward beyond the water surface WF and extends to the reservoir area 21b. As shown in FIG. 4, in the cross section perpendicular to the front-rear direction, the side region 26 has a linear shape 26a that slopes toward the water surface WF as it progresses downward from the upper end edge 21e, and a linear shape 26a in the rear portion. It has a curved shape 26b that curves downward at an intermediate position from the lower end to the water surface WF, and a curved shape 26c that curves upward from the lower end of the curved shape 26b to the water surface WF. The curved shape 26c extends beyond the water surface WF to the reservoir area 21b. The portion having the curved shape 26c is the rear portion, and the portion not having the curved shape 26c is the front portion. The boundary between the front portion and the rear portion may be the front end of the drainage portion 32.

In a modified example, the entire side region 26 may have at least one of a linear shape 26a and a curved shape 26b, and does not need to have the curved shape 26c. In this case, the reservoir area 21b below the side area 26 may have a curved shape that curves upward.

As shown in FIG. 2, in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21, the rear region 24 has a straight line shape 24a that slopes forward, i.e., toward the water surface WF, as it progresses downward from the upper edge 21e, a curved shape 24b that curves downward at an intermediate position between the bottom end of the straight line shape 24a and the water surface WF, and a curved shape 24c that curves upward from the bottom end of the curved shape 24b to the water surface WF. The straight line shape 24a may be parallel in the up-down direction. The rear region 24 is located behind the rear edge of the opening 14a of the toilet seat 14. This makes it difficult for the user to see the rear region 24.

(Aspects of accumulated water)
The water surface WF of the water stored in the toilet bowl 21 is stabilized at the same height as the lower end of the curved position 36a where the drain pipe 36 extends upward and bends downward. As shown in FIG. 6, when the toilet main body 20 is observed from above in a state where the accumulated water is stable, inside the upper end flange portion 30, the area of the water surface WF and the area other than the water surface WF, that is, the upper region 21c. The ratio of the area of water surface WF to the area when viewed from above: area other than water surface WF = 4:6. In a modified example, the area of the water surface WF may be larger than the area of the water surface WF: area of the water surface WF: area of the water surface other than the water surface WF=4:6. For example, the area of the water surface WF:the area other than the water surface WF may be between 4:6 and 10:0. Inside the upper edge 21e of the toilet bowl 21, the area of the water surface WF:the area other than the water surface WF may be between 4:6 and 10:0.

As shown in FIG. 12, the accumulated water is filled from the water accumulation area 21b of the toilet bowl 21 to the bottom surface of the drainage section 32. In a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 21, at any point 1/8 to 3/8 from the rear end of the opening 14a when the opening 14a is divided into eight equal parts in the front-to-rear direction, the vertical distance D1 from the top end of the toilet body 20, i.e., the top end of the upper flange portion 30 to the bottom surface of the toilet body 20 located vertically downward, i.e., the position P of either the bottom end of the toilet bowl 21 or the bottom surface of the drainage section 32, is equal to the front-to-rear distance D2 from the position P to the front edge F of the accumulated water. In a modified example, the distance D1 may be less than the distance D2.

As shown in FIG. 5, when the toilet seat 14 is placed above the toilet main body 20 and the toilet main body 20 is observed from above, at the opening of the toilet seat 14, the area of the water surface WF is equal to the area other than the water surface WF. The area of the water surface WF is larger than the area=5:5. In a modified example, the area of the water surface WF may be larger than the area of the water surface WF other than the water surface WF (area of the water surface WF: area other than the water surface WF=5:5). For example, the area of the water surface WF:the area other than the water surface WF may be between 5:5 and 10:0.

(Configuration of discharge part)
The discharge unit 40 discharges the wash water in the tank 18 into the toilet bowl 21. As shown in FIG. 13, the discharge section 40 includes a pump 52, a switching valve 54, a plurality of communication pipes 56a, 56b, 56c, 56d, and a plurality of discharge ports 42, 44, 46, 48. . FIG. 13 shows how the parts 42, 44, 46, 48, 52, 54, 56a, 56b, 56c, and 56d included in the discharge part 40 are connected. In FIG. 13, the outlets 42, 44, 46, 48 represent their respective positions. In FIG. 13, the configuration of the discharge ports 42, 44, 46, and 48 is not shown. When the wash water in the tank 18 is discharged into the toilet bowl 21, the wash water is sucked from the tank 18 by the pump 52. The pump 52 increases the pressure of the wash water and sends it to the switching valve 54. The switching valve 54 allows the pump 52 to communicate with any one of the plurality of communication pipes 56a, 56b, 56c, and 56d, thereby sending the wash water from the pump 52 to the communication pipe communicating with the pump 52. . The pump 52 and the switching valve 54 are arranged at the rear of the toilet main body 20.

When flushing water is to flow, the switching valve 54 is first in a state of communicating the pump 52 with the communication pipe 56b that communicates with the discharge port 44 disposed on the left side, and the switching valve 54 is in a state where the pump 52 is in communication with the communication pipe 56b that communicates with the discharge port 44 disposed on the left side, and the switching valve 54 is in a state of communicating with the pump 52. The communication pipes 56a, 56c, and 56d that communicate with the pump 52 are maintained in a state where they are not communicated with each other. The wash water pressurized by the pump 52 passes through the communication pipe 56b and is discharged from the discharge port 44 into the toilet bowl 21.

As shown in FIG. 10, the discharge port 44 is disposed at the tip of the nozzle 45 having a shape that spreads from the communicating pipe 56b in both the up-down direction and the down-down direction. As shown in FIG. 4, the toilet body 20 has a tubular opening 44a that extends from the rear to the front along the inner surface of the toilet bowl 21. The nozzle 45 is disposed within the opening 44a. The discharge port 44 has an elongated shape extending in the up-down direction. The ratio of the longitudinal length to the lateral length of the discharge port 44 is 1:4. The ratio of the longitudinal length to the lateral length of the discharge port 44 may be either 1:2 or 1:3. The opening 44a has an elongated shape extending in the up-down direction. The ratio of the longitudinal length to the lateral length of the opening 44a is 1:4. The ratio of the longitudinal length to the lateral length of the opening 44a may be either 1:2 or 1:3. As shown in FIG. 10, the flush water that has passed through the communication pipe 56b and reached the nozzle 45 spreads in the vertical direction according to the shape of the nozzle 45, as indicated by the arrows. As a result, the flush water discharged from the discharge port 44 flows straight from the discharge port 44 in parallel to the front-rear direction, and also spreads upward and downward. The flush water flowing upward comes into contact with the upper end flange portion 30 and flows forward along the upper end flange portion 30 along the upper end edge 21e of the toilet bowl 21. As shown in FIG. 11, the flush water is discharged from the discharge port 44 approximately parallel to the side region 26, as indicated by the arrows. Approximately parallel may be parallel to the side region 26, i.e., 0°. The state of being discharged approximately parallel includes a state in which the flow direction of the flush water discharged toward the side region 26 is discharged at an angle of 30° or less to the side region 26. With this configuration, it is possible to suppress the pressure of the flush water discharged from the discharge port 44 from being reduced by collision with the side region 26. It is possible to suppress a decrease in the flow rate of the flush water discharged from the discharge port 44. The discharge port 44 is located on the inner surface of the toilet bowl 21.

As shown in FIG. 7, the wash water discharged from the discharge port 44 flows into the first region 21x of the upper region 21c of the toilet bowl 21. The first region 21x represented by a plurality of parallel diagonal lines extends from the discharge port 44 to the front end of the toilet bowl 21 and reaches the upper edge 21e. In other words, the wash water flowing in the first region 21x flows from the discharge port 44 to the front end of the toilet bowl 21 and to the lower surface of the upper end flange portion 30. Thereby, the lower surface of the left upper end flange portion 30 can be washed with the washing water flowing through the first region 21x. The lower end of the first region 21x reaches the water surface WF of the stored water. The first region 21x extends beyond the front end of the toilet bowl 21 to the right side.

The shape and direction of the discharge port 44 and the pressure of the cleaning water by the pump 52 are adjusted so that the cleaning water discharged from the discharge port 44 is maintained at 5.0 mm or less over the entire first region 21x. ing. The pump 52 is configured such that the flow rate of the wash water flowing through the first region 21x is at least instantaneously 0.5 m/s or more at a position 1.0 mm from the surface of the toilet bowl 21 over the entire first region 21x. Increase the pressure so that The flow rate of the washing water in the thickness direction is slowest on the surface of the toilet bowl 21, and gradually increases as the distance from the toilet bowl 21 increases. Therefore, the washing water flowing at 0.5 m/s or more at a position 1.0 mm from the surface of the toilet bowl 21 is also 0.5 m/s or more at the washing water surface.

The switching valve 54 switches from a state in which the pump 52 is connected to the communication pipe 56b that is connected to the discharge port 44 located on the left side to a state in which the pump 52 is not connected. The switching valve 54 then maintains a state in which the pump 52 is connected to the communication pipe 56a that is connected to the discharge port 42 located on the rear side, and the pump 52 is not connected to the other communication pipes 56b, 56c, and 56d. The flush water pressurized by the pump 52 passes through the communication pipe 56a and is discharged from the discharge port 42 into the toilet bowl 21.

The discharge port 42 is disposed at the upper end of the rear region 24. A spreader 42a is disposed at the discharge port 42. The spreader 42a has a plate-shaped member disposed in front of the discharge port 42 with a gap through which the cleaning water can pass. The cleaning water discharged from the discharge port 42 spreads and flows in the vertical and horizontal directions by colliding with the spreader 42a.

As shown in FIG. 9, the cleaning water discharged from the discharge port 42 flows into the third region 21z, which covers the entire rear region 24. The lower end of the third region 21z reaches the water surface WF of the pooled water. The upper end of the third region 21z reaches the lower surface of the upper end flange portion 30. The third region 21z extends beyond the rear region 24 in both the left and right directions. The third region 21z has a region 21q at the rear end of the first region 21x, which partially overlaps with the first region 21x. The area of the region 21q is 1/2 or less of the area of the first region 21x. The area of the region 21q may be 1/4 or less of the area of the first region 21x. The area of the region 21q is 1/2 or less of the area of the third region 21z. The area of the region 21q may be 1/4 or less of the area of the third region 21z.

The switching valve 54 switches the communicating pipe 56b to a state where it is not connected to the pump 52, and then switches the communicating pipe 56a to a state where it is connected to the pump 52. That is, the discharge of the cleaning water flowing through the third region 21z starts after the discharge of the cleaning water flowing through the first region 21x is completed. This makes it possible to avoid a situation in which the flow rate of the cleaning water flowing through the third region 21z is reduced by the cleaning water flowing through the first region 21x in the region overlapping with the first region 21x when the cleaning water flows through the third region 21z.

The switching valve 54 switches the communication pipe 56a and the pump 52 from a state in which they communicate with each other to a state in which they do not communicate with each other. Continuously, the switching valve 54 is in a state of communicating the pump 52 with a communication pipe 56c that communicates with the discharge port 46 disposed on the right side, and communicating the pump 52 with the other communication pipes 56a, 56b, and 56d. maintain a state of not doing so. The wash water pressurized by the pump 52 passes through the communication pipe 56c and is discharged from the discharge port 46 into the toilet bowl 21.

The discharge port 46 is arranged at the tip of a nozzle 47 similar to the discharge port 44 . The nozzle 47 is arranged in an opening 46a similar to the opening 44a. The discharge port 46, the opening 46a, and the nozzle 47 are arranged in plane symmetry with respect to a plane perpendicular to the left-right direction at the center of the discharge port 44, the nozzle 45, and the toilet bowl 21 in the left-right direction. The cleaning water that has passed through the communication pipe 56c and reached the nozzle 47 spreads and flows in the vertical direction according to the shape of the nozzle 47. As a result, the cleaning water discharged from the discharge port 44 flows straight from the discharge port 46 in parallel in the front-rear direction, and spreads upward and downward. The washing water flowing upward contacts the upper end flange portion 30 and flows forward along the upper end edge 21e of the toilet bowl 21 along the upper end flange portion 30.

As shown in FIG. 8, the wash water discharged from the discharge port 46 flows into the second region 21y of the upper region 21c of the toilet bowl 21. The second region 21y drawn by a plurality of points extends from the discharge port 46 to the front end of the toilet bowl 21 and reaches the upper edge 21e. In other words, the wash water flowing through the second region 21y flows from the discharge port 46 to the front end of the toilet bowl 21 and to the lower surface of the upper end flange portion 30. Thereby, the lower surface of the upper end flange portion 30 on the right side can be washed with the washing water flowing through the second region 21y. The lower end of the second region 21y reaches the water surface WF of the stored water. The second region 21y extends beyond the front end of the toilet bowl 21 to the left side. The first region 21x and the second region y each extend in opposite directions beyond the front end of the toilet bowl 21 in the left-right direction. The first region 21x and the second region y have regions 21p that overlap with each other. The second region 21y and the third region z have a mutually overlapping region 21r (see FIG. 9). The area of the region 21p is 1/2 or less of the area of the first region 21x. The area of the region 21p may be 1/4 or less of the area of the first region 21x. The area of the region 21p is 1/2 or less of the area of the second region 21y. The area of the region 21p may be 1/4 or less of the area of the second region 21y. The area of the region 21r is 1/2 or less of the area of the second region 21y. The area of the region 21r may be 1/4 or less of the area of the second region 21y. The area of the region 21r is 1/2 or less of the area of the third region 21z. The area of the region 21r may be 1/4 or less of the area of the third region 21z.

The shape and direction of the discharge port 46 and the pressure of the cleaning water by the pump 52 are such that the thickness of the cleaning water discharged from the discharge port 46 is maintained at 5.0 mm or less over the entire second region 21y. It has been adjusted. The pump 52 is configured such that the flow rate of the washing water flowing through the second region 21y is at least momentarily 0.5 m/s or more at a position 1.0 mm from the surface of the toilet bowl 21 over the entire second region 21y. Increase the pressure so that

The switching valve 54 switches the communicating pipe 56a and the pump 52 to a non-communicating state, and then switches the communicating pipe 56c and the pump 52 to a communicating state. That is, the discharge of the cleaning water flowing through the third region 21z is completed, and then the discharge of the cleaning water flowing through the second region 21y is started. This makes it possible to avoid a situation in which the flow rate of the cleaning water flowing through the second region 21y is reduced by the cleaning water flowing through the third region 21z in the region overlapping with the third region 21z when the cleaning water flows through the second region 21y. Similarly, at the timing when the cleaning water starts to flow through the second region 21y, the supply of cleaning water to the first region 21x is stopped. It makes it possible to avoid a situation in which the flow rate of the cleaning water flowing through the second region 21y is reduced by the cleaning water flowing through the first region 21x in the region overlapping with the first region 21x.

The switching valve 54 switches from a state in which the connecting pipe 56c and the pump 52 are connected to a state in which they are not connected. The switching valve 54 then maintains a state in which the connecting pipe 56d, which is connected to the discharge port 48 located at the front end of the drainage section 32, is connected to the pump 52, and a state in which the other connecting pipes 56a, 56b, and 56c are not connected to the pump 52. The flush water pressurized by the pump 52 is discharged from the discharge port 48 into the toilet bowl 21.

The cleaning water discharged from the outlet 44 cleans the entire area of the first region 21x. The cleaning water discharged from the outlets 42 and 46 other than the outlet 44 cleans a part of the first region 21x. The first region 21x is cleaned by the cleaning water discharged from each of the outlets 42, 44, and 46. 1/4 or more of the first region 21x is cleaned only by the cleaning water discharged from the outlet 44. 1/2 or more of the first region 21x may be cleaned only by the cleaning water discharged from the outlet 44. Similarly, the second region 21y is cleaned by the cleaning water discharged from each of the outlets 42, 44, and 46. 1/4 or more of the second region 21y is cleaned only by the cleaning water discharged from the outlet 46. 1/2 or more of the second region 21y may be cleaned only by the cleaning water discharged from the outlet 46. Similarly, the third region 21z is cleaned with cleaning water discharged from each of the outlets 42, 44, and 46. At least ¼ of the third region 21z is cleaned only with cleaning water discharged from the outlet 42. At least ½ of the third region 21z may be cleaned only with cleaning water discharged from the outlet 42.

The discharge port 48 is disposed in a through hole provided in the toilet body 20. Waste and other waste washed away with the flushing water discharged from the discharge ports 42, 44, and 46 accumulates in the drainage section 32. The flushing water discharged from the discharge port 48 flushes the waste and other waste accumulated in the drainage section 32 together with the accumulated water from the drain port 34 to the drain pipe 36.

(effect)
The discharge portion 40 allows cleaning water to flow from the respective discharge ports 44 and 46 in the left and right directions to reach the upper edge 21e. The wash water discharged from the discharge port 44 flows along the upper edge 21e beyond the front end of the toilet bowl 21 to the right side of the center in the left-right direction. The flushing water discharged from the discharge port 46 passes over the front end of the toilet bowl 21 and flows along the upper edge 21e to the left side of the center in the left-right direction. As a result, the entire area in front of the discharge ports 44 and 46 can be washed with the washing water up to the upper edge 21e of the toilet bowl 21.

At the outlets 44 and 46, the nozzles 45 and 47 eject the cleaning water in an upward direction. The cleaning water can be made to flow to the upper edge 21e. At the outlet 44, the nozzles 45 eject the cleaning water in a downward direction. The cleaning water can be made to flow appropriately to the first region 21x. At the outlet 46, the nozzles 47 eject the cleaning water in a downward direction. The cleaning water can be made to flow appropriately to the second region 21y. In a modified example, the shapes of the nozzles 45 and 47 and the outlets 44 and 46 may be any shape that allows the cleaning water to be ejected from the outlets 44 and 46 in an up-down direction.

A spreader 42a is arranged at the discharge port 42. Cleaning water discharged from the discharge port 42 is spread and flows by the spreader 42a. The cleaning water discharged from the discharge port 42 reaches the lower surface of the upper end flange portion 30. Thereby, the entire area behind the discharge ports 44 and 46 can be cleaned with the cleaning water up to the upper edge 21e of the toilet bowl 21.

The wash water discharged from the discharge ports 42, 44, and 46 can wash the entire circumference of the toilet bowl 21 up to the upper edge 21e. The lower surface of the upper end flange portion 30 can be cleaned over the entire circumference of the upper end flange portion 30. In a modified example, the cleaning water may flow over at least 1/2 to 1/4 of the entire circumference of the upper edge 21e. In a modified example, cleaning water may flow at a flow rate of 0.5 m/s or more over at least 1/2 to 1/4 of the entire circumference of the upper edge 21e.

The front region 22 of the toilet bowl 21 is composed of a linear shape 22a and a curved shape 22b. In the front region 22, in a cross section perpendicular to the left-right direction at an arbitrary position in the left-right direction, the front region 22 is configured by a linear shape 22a and a curved shape 22b that curves downward. The front region 22 does not have a shape that bulges upward. The same applies to any position in the front-rear direction. In the front region 22, no upwardly protruding shape that would impede the flow of washing water is disposed. According to this configuration, the cleaning water flows smoothly from above to below. In a modified example, the front region 22 may be configured with a linear shape 22a and a curved shape 22b in the length range of the drainage portion 32 in the left-right direction. In this case, the front region 22 may have a shape that swells upward in a portion outside the length range of the drainage portion 32 in the left-right direction.

In the forward portion of the side region 26, as in the forward region 22, there is no upward protruding shape that would impede the flow of cleaning water. This configuration allows cleaning water to flow smoothly from top to bottom.

The front portions of the front region 22 and the side regions 26 are prone to dirt from excrement and the like. According to the toilet device 10, in the front portions of the front region 22 and the side regions 26 where dirt tends to adhere, a decrease in the flow rate of the flushing water can be suppressed, and it is possible to facilitate cleaning of excrement and the like with the flushing water.

Washing water having a flow velocity of 0.5 m/s or more on the surface of the washing water flows over the entire area of each of the first region 21x and the second region 21y. This makes it easier to wash excrement and the like with the washing water. In the front portions of the front region 22 and the side regions 26 described above, a decrease in flow velocity is suppressed, so the initial velocity of the wash water discharged from the discharge ports 44 and 46 can be suppressed. In a modified example, even if the cleaning water has a flow velocity of 0.6 m/s, 0.7 m/s, 0.8 m/s, 0.9 m/s, and 1.0 m/s or more on the surface, good. In a modified example, cleaning water having a flow velocity of 0.5 m/s or more on the surface of the cleaning water may flow in a portion of each of the first region 21x and the second region 21y, for example, in the upper edge 21e.

At a position 1.0 mm from the surface of the toilet bowl 21, the flow velocity of the washing water is maintained at 0.5 m/s or more. The height of excrement and the like that adheres to the toilet bowl 21 is often up to 1.0 mm from the surface of the toilet bowl 21. By maintaining the flow velocity up to a position 1.0 mm from the surface of the toilet bowl 21, excrement and the like adhering to the toilet bowl 21 can be easily cleaned. In the modified example, the washing water at a position 1.0 mm from the surface of the toilet bowl 21 is 0.6 m/s, 0.7 m/s, 0.8 m/s, 0.9 m/s, and 1.0 m/s. The flow rate may be higher than any of the following.

The thickness of the flushing water flowing through the toilet bowl 21 is kept to 5.0 mm or less. The amount of flushing water used to flush the toilet bowl 21 can be reduced. If dirt such as excrement is attached to the toilet bowl 21, the dirt can be washed away by flushing water near the contact surface with the toilet bowl 21. Therefore, even if the thickness of the flushing water is kept to 5.0 mm or less, a decrease in flushing ability is avoided. In a modified example, the thickness of the flushing water flowing through the toilet bowl 21 is kept to 3.0 mm, 4.0 mm, 6.0 mm, or 7.0 mm or less.

When the upper region 21c is viewed from above, the ratio of the area of the water surface WF to the area other than the water surface WF is 4:6. Also, at the opening of the toilet seat 14, the ratio of the area of the water surface WF to the area other than the water surface WF is 5:5. With this configuration, by increasing the area of the water surface WF, it is possible to prevent waste from directly contacting the toilet bowl 21 and adhering to the toilet bowl 21. In a modified example, when the toilet body 20 is viewed from above, the ratio of the area of the water surface WF to the area other than the water surface WF does not have to be between 4:6 and 10:0, and may be, for example, any of 9:1, 8:2, 7:3, 6:4, and 5:5 instead of 10:0, and any of 5:5, 6:4, 7:3, 8:2, and 9:1 instead of 4:6. In a modified example, when the toilet seat 14 is placed above the toilet bowl body 20 and viewed from the opening of the toilet seat 14, the ratio of the area of the water surface WF to the area other than the water surface WF does not have to be between 5:5 and 10:0; for example, instead of 10:0, it could be any of 9:1, 8:2, 7:3, and 6:4, and instead of 5:5, it could be any of 6:4, 7:3, 8:2, and 9:1.

The distance D1 in the vertical direction from the upper end of the toilet main body 20 to the position P is equal to the distance D2 in the front-rear direction from the position P to the front edge F of the pooled water. When feces excreted by the user come into contact with either the surface of the toilet bowl 21 or the drainage section 32, the stool often falls forward along the shape of the toilet bowl 21. By setting the distance D1 to be less than or equal to the distance D2, it is possible to prevent feces from crossing over the standing water and coming into direct contact with the toilet bowl 21.

(Second embodiment)
As shown in FIG. 14, the toilet device 10 of this embodiment may include four on-off valves 252, 254, 256, and 258 instead of the switching valve 54. Each of the four on-off valves 252, 254, 256, and 258 is arranged in each of the four communication pipes 56a, 56b, 56c, and 56d. Each of the four on-off valves 252, 254, 256, and 258 opens the communication pipe 56a, 56b, 56c, and 56d in which each of the four on-off valves 252, 254, 256, and 258 is disposed. , closed state and switch to . When supplying flush water to the toilet bowl 21, the on-off valves 252, 254, 256, and 258 sequentially close the four communication pipes 56a, 56b, 56c, and 56d from open to closed. By switching to the state, cleaning water is discharged from the discharge ports 44, 42, 46, and 48 in this order. The other configurations are the same as those in the first embodiment.

Third Embodiment
As shown in Fig. 15, the toilet device 10 of this embodiment includes a motor 345 that changes the direction of the nozzle 45, and an operation button that allows the user to change the direction of the nozzle 45. In the default state, the nozzle 45 faces in the direction shown in Fig. 11. When the user operates the operation button, the nozzle 45 is moved downward as shown by the dashed line in Fig. 15. In this case, the washing water discharged from the discharge port 44 flows only in a part behind the first region 21x. With this configuration, the washing water can be directed toward the part where dirt is attached. The nozzle 47 may also be provided with a motor that changes the direction in the same way as the nozzle 45.

(Fourth embodiment)
In the toilet device 10 of this embodiment, the pump 52 controls the flow rate of the flush water by adjusting the pressure of the flush water. The toilet device 10 includes an operation button that allows the user to adjust the flow rate of flush water. When the user operates the operation button, the pump 52 discharges cleaning water at a flow rate adjusted by the user from at least one of the discharge ports 42 , 44 , 46 , and 48 . According to this configuration, the flow rate of the washing water can be adjusted according to the degree of dirt on the toilet bowl 21. In a modified example, the pump 52 may change the flow rate of the cleaning water discharged from at least one of the discharge ports 42, 44, 46, and 48 from the start to the end of the supply of the cleaning water. .

Specific examples of the technology disclosed in this specification have been described in detail above. These are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and variations of the specific examples given above. Modifications of the above embodiments are listed below.

(1) There is no limit to the number of outlets arranged in the toilet device 10. For example, the number of outlets may be three or less, or five or more. There is also no limit to the location of the outlets. For example, the outlets may be arranged near the front end of the toilet body 20.

(2) The upper end flange portion 30 may not be provided. In this case, the lower surface of the toilet seat 14 may be in contact with the upper edge 21e. The flushing water may flow toward the lower surface of the toilet seat 14. The lower surface of the toilet seat 14 may be washed with the washing water. In this modification, the toilet seat 14 is an example of a "projection". The protrusion may extend around the upper edge of the toilet bowl 21. In other words, the upper edge 21e may be arranged at the upper end of the toilet main body 20. The upper edge 21e may be located below the upper end of the toilet main body 20. For example, when a waterproof member such as the upper end flange portion 30 that blocks the flow of wash water is arranged on the toilet main body 20, the upper end edge 21e may be arranged below the waterproof member. For example, when the toilet main body 20 includes a folded part that is folded back downward toward the toilet bowl 21 at the upper end, and the lower end of the folded part functions as a waterproof member, the upper edge 21e coincides with the lower end of the folded part. You can. If the lower end of the folded part is arranged with a gap between it and the toilet bowl 21, and the upper end of the folded part, that is, the upper end portion of the toilet bowl body 20 functions as a waterproof member, the upper edge 21e is the upper end of the toilet bowl body 20. May match parts. The upper edge 21e may be the upper end portion of the area designed for the flow of cleaning water.

(3) The shape of the vicinity of the upper edge 21e of the toilet bowl 21 may be, for example, as shown in Figures 16 and 17, such that the lower part of the upper edge 21e is recessed from the upper edge 21e. In these modified examples, the upper flange portion 30 may or may not be provided. If the upper flange portion 30 is not provided, the toilet seat 14 may be in contact with the upper edge 21e, as in modified example (2).

(4) In the discharge section 40, at least one discharge port among the discharge ports 42, 44, 46, and 48 may not be arranged in the toilet main body 20. The discharge unit 40 may discharge cleaning water from the functional unit 16.

(5) After the discharge unit 40 starts discharging the cleaning water from the discharge port 44, the flow rate of the cleaning water flowing into the first region 21x is either 1/2 or less or 1/4 or less of the maximum flow rate. Discharging of cleaning water from at least one of the discharge ports 42 and 46 may be started after the discharge becomes one. The ejection order of the ejection ports 42, 44, and 46 is not particularly limited.

(6) The discharge unit 40 may start discharging flushing water from the discharge port 46 while flushing water is being discharged from the discharge port 44. The flushing water discharged from the discharge port 44 may merge with the flushing water discharged from the discharge port 46 in the toilet bowl 21, for example, in the front region 22.

(7) The number and positions of the outlets arranged in the discharge unit 40 are not particularly limited. For example, the discharge unit 40 may have only one outlet arranged to the right of the center in the left-right direction of the toilet bowl 21 and forward of the drainage unit 32. In this case, the outlet may discharge cleaning water toward the rear. For example, the discharge unit 40 may have one outlet each on the left and right sides of the center in the left-right direction of the toilet bowl 21, for a total of two outlets. One of the two outlets may be arranged forward of the center in the front-to-rear direction of the toilet bowl 21. The other of the two outlets may be arranged rearward of the center in the front-to-rear direction of the toilet bowl 21. The two outlets may discharge cleaning water in the same direction, either clockwise or counterclockwise, when viewed from above.

The technical elements described in this specification or drawings have technical utility either alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. The technologies illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving any one of those objectives is itself technically useful.

10: Toilet device, 12: Toilet part, 14: Toilet seat, 14a: Opening, 20: Toilet body, 21: Toilet bowl, 21b: Water storage area, 21c: Upper area, 21e: Upper edge, 21u: Lower end, 21x : first region, 21y: second region, 21z: third region, 22: front region, 22a: linear shape, 22b: curved shape, 24: rear region, 24a: linear shape, 24b: curved shape, 24c: curved Shape, 26: Side area, 26a: Straight line shape, 26b: Curved shape, 26c: Curved shape, 30: Upper end flange portion, 32: Drainage portion, 34: Drainage port, 36: Drainage pipe, 36a: Curved position, 40 :Discharge part, 42, 44, 46, 48: Discharge port, 42a: Spreader, 45, 47: Nozzle, 52: Pump, 54: Switching valve, 56: Communication pipe, 56a: Communication pipe, 56b: Communication pipe, 56c : Communication pipe, 56d: Communication pipe

Claims (13)

A toilet bowl and
A toilet device, comprising: a discharge section that discharges flush water in a direction along the upper edge of the toilet bowl and causes the flush water to flow toward the upper edge. The toilet device according to claim 1, wherein the discharge portion allows the flushing water to flow to the upper edge over a length of at least 1/4 of the entire length of the upper edge. The toilet device according to claim 2, wherein the discharge portion directs the flushing water onto the upper edge over the entire length of the upper edge. The toilet device according to any one of claims 1 to 3, wherein the discharge section causes the flushing water to flow at the upper edge at a flow rate of 0.5 m/s or more. The toilet device according to any one of claims 1 to 3, wherein the discharge portion directs the flushing water onto the upper edge of at least one end of the toilet bowl in the front-to-rear direction. The discharge unit is
a discharge port that discharges the flushing water into the toilet bowl, the discharge port being disposed on one side of the toilet bowl in a front-to-rear direction;
4. The toilet apparatus according to claim 1, wherein the flush water discharged from the discharge port is caused to flow onto the upper edge on the other side in the front-to-rear direction of the toilet bowl. the discharge portion includes a discharge port that discharges the flush water into the toilet bowl,
A toilet device as described in any one of claims 1 to 3, wherein in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl, the toilet bowl is configured with at least one of a curved shape and a straight shape that slopes downward toward the water accumulated in the toilet bowl, in front of the water accumulated in the toilet bowl. The toilet device according to any one of claims 1 to 3, wherein the discharge portion includes a discharge port that discharges the wash water toward the upper edge. The toilet device according to any one of claims 1 to 3, wherein the discharge section includes discharge ports for discharging the wash water on both sides of the toilet bowl in the left-right direction. The toilet device includes a protrusion above the upper edge of the toilet bowl, the protrusion protruding from the upper edge above the toilet bowl,
The toilet apparatus according to claim 1 , wherein the discharge portion causes the flush water to flow onto an underside of the protrusion. The toilet device according to any one of claims 1 to 3, wherein when the toilet bowl is viewed from above, the ratio of a first area of the water surface of the water stored in the toilet bowl to a second area of the water other than the water surface is between 4:6 and 10:0. The toilet device according to any one of claims 1 to 3, wherein the discharge section allows the flush water to flow at a surface flow velocity of 0.5 m/s or more. The discharge part is
Discharging cleaning water in a plurality of directions to flow the cleaning water onto the surface of the toilet bowl,
Using pressure of wash water supplied from a supply pipe extending from a water supply route to flow the wash water onto the surface of the toilet bowl, and flowing wash water pressurized by a pump onto the surface of the toilet bowl. flowing washing water onto the surface of the toilet bowl by at least one of the following;
discharging the washing water in a first direction of the plurality of directions to flow the washing water onto a first region of the surface of the toilet bowl;
Any one of claims 1 to 3, wherein the washing water is discharged in a second direction of the plurality of directions to flow into a second region of the surface of the toilet bowl that is different from the first region. The toilet device described in .

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