Toilet bowl device

Abstract

To provide a technology capable of discharging wash water over a wide range of the rear part of a toilet bowl compared to the prior art.SOLUTION: The toilet bowl device disclosed in the present description may include a toilet bowl having a water reservoir part in which wash water is stored, and a discharge part that discharges wash water onto the surface of the toilet bowl. The discharge part may discharge the wash water onto the upper edge of the rear part of the surface at least partially between the right and left edges of the water reservoir part.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a toilet apparatus. [Background technology]

[0002] Patent Document 1 discloses a toilet apparatus equipped with a water outlet located at the top of the toilet bowl. The water outlet of the toilet apparatus ejects flush water to the rear of the toilet bowl. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-64618 Summary of the Invention [Problem to be solved by the invention]

[0004] This specification provides a technology that can eject flush water over a wider area behind the toilet bowl than conventional technology. [Means for solving the problem]

[0005] The toilet device disclosed in this specification may include a toilet bowl having a water storage section in which flush water is stored, and a discharge section that discharges flush water onto the surface of the toilet bowl. The discharge section may discharge the flush water onto an upper end of a rear portion of the surface in at least a portion between the left and right ends of the water storage section.

[0006] A toilet apparatus according to another embodiment disclosed in this specification may include a toilet bowl having a water storage section in which flushing water is stored, and a discharge section that discharges flushing water onto the surface of the toilet bowl. The discharge section may discharge the flushing water onto the upper end of a straight section that extends linearly upward, at least in a portion between the left and right ends of the water storage section, at the upper end of the rear part of the surface. The upper end of the straight section may be located at the lower end of a curved section that is displaced rearward as it approaches the upper end surface of the toilet bowl. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 shows a perspective view of a toilet apparatus according to a first embodiment. [Diagram 2] 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. [Diagram 3] 3 shows an enlarged view of the area surrounded by dashed line III in FIG. 2. [Figure 4] 4 shows an enlarged view of the area surrounded by dashed line IV in FIG. 3. [Diagram 5] 3 shows a cross-sectional view of the toilet apparatus taken along the VV cross section of FIG. 2. [Figure 6] FIG. 2 is a block diagram showing the configuration of a discharge unit according to the embodiment. [Figure 7] 5 shows an enlarged view similar to FIG. 4 in the second embodiment. [Figure 8] FIG. 13 is a front view of a urinal device according to a third embodiment. [Figure 9] FIG. 9 shows a cross-sectional view of the urinal apparatus taken along line IX-IX in FIG. 8. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] (First embodiment) (Configuration of toilet device 10) As shown in Fig. 1, a toilet apparatus 10 according to a first embodiment of the present invention is a flush toilet. The toilet apparatus 10 is fixed to a floor surface when in use. The toilet apparatus 10 may also be, for example, a so-called wall-hung flush toilet that is fixed to a wall.

[0009] The toilet device 10 comprises a toilet portion 12, a toilet seat 14, a water discharge portion 40 (see FIG. 6), a tank 18 (see FIG. 2), and a functional portion 70. FIG. 2 shows a cross-sectional view perpendicular to the left-right direction at the center of the toilet portion 12 in the left-right direction. As shown in FIG. 2, the toilet portion 12 comprises a toilet body 20 and an upper end flange 30. The toilet body 20 is made of ceramic. In a modified example, the toilet body 20 may be made of resin. The toilet body 20 comprises a toilet bowl 22 that receives waste. The toilet body 20 accommodates a tank 18 at the lower end of the toilet body 20. The tank 18 is shown in a side view. The tank 18 stores flushing water for flushing the toilet bowl 22. The toilet device 10 comprises a flush button (not shown) that is electrically connected to the water discharge portion 40. When the flush button is operated by a user, flush water is discharged from the tank 18 via a discharge section (not shown) into the toilet bowl 22. The functional section 70 includes a flushing nozzle device 72. The functional section 70 may also have functions such as an opening / closing function that automatically opens and closes the toilet lid (not shown) in accordance with the user's actions, a hot air drying function, a deodorizing function, etc.

[0010] In the toilet apparatus 10, flush water in the tank 18 may be supplied to the toilet bowl 22 by operating a lever arranged on the toilet apparatus 10, in addition to operating a flush button. The flush button may be arranged on a remote controller that is electrically connected to the water discharger 40 either wired or wirelessly. Flush water in the tank 18 may be supplied to the toilet bowl 22 even without operation by the user. For example, flush water in the tank 18 may be supplied to the toilet bowl 22 when the user is not detected by the sensor.

[0011] The toilet seat 14 is attached to the toilet body 20 so as to be openable and closable. A user sits on the toilet seat 14. The toilet seat 14 has an opening 14a.

[0012] Hereinafter, the direction in which the toilet seat 14 and the functional unit 70 are arranged is 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 unit 70 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 perpendicular 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 as seen by a user facing the toilet device 10. The vertical direction perpendicular to the front-rear direction is referred to as the up-down direction. In the up-down direction, the side on which the tank 18 is arranged with respect to the toilet body 20 is referred to as the lower side, and the opposite side is referred to as the lower side.

[0013] The toilet bowl 22 has a shape that is generally recessed downward. The toilet body 20 comprises a water storage section 24 that is disposed at the lower end of the toilet bowl 22, a drain pipe 36 that communicates with the water storage section 24, and a drain outlet 34 that opens into the water storage section 24. The water storage section 24 is part of the toilet bowl 22. Water is stored in the water storage section 24 up to the water surface WS. The water surface WS coincides with the curved position 36a of the drain pipe 36. In other words, when flush water is not being supplied to the toilet bowl 22, the area below the water surface WS is referred to as the water storage section 24.

[0014] The water collecting section 24 is connected to a drain pipe 36 through a drain outlet 34. The drain pipe 36 extends upward from the drain outlet 34. The drain pipe 36 bends downward at a curved position 36a and extends downward. The drain pipe 36 extends to the outside of the toilet bowl section 12.

[0015] An upper end flange 30 is disposed at the upper end of the toilet bowl 22, surrounding the upper end edge 22a of the surface of the toilet bowl 22. The upper end flange 30 is disposed at the upper end of the toilet body 20. The upper end flange 30 protrudes inward from the upper end edge 22a so as to face the surface of the toilet bowl 22. The lower surface 30a of the upper end flange 30 is disposed vertically in the up-down direction.

[0016] The cleaning nozzle device 72 is located at the center of the front end of the functional part 70 in the left-right direction. The front part of the cleaning nozzle device 72 is located between the toilet bowl part 12 and the toilet seat 14. The cleaning nozzle device 72 cleans the buttocks of the human body. As shown in FIG. 2, the cleaning nozzle device 72 includes a case 74, a nozzle 76, and a shutter 78. The cleaning nozzle device 72 is arranged so as to be inclined downward toward the front. The front end of the cleaning nozzle device 72 is located inside the toilet bowl 22. The case 74 houses the nozzle 76. The case 74 includes a drive device that drives the nozzle 76 in the front-rear direction. The nozzle 76 is formed in a cylindrical shape so that cleaning water supplied from a hot water supply unit (not shown) passes through it. An opening is arranged at the front end of the nozzle 76 for ejecting cleaning water toward the buttocks of the user. The shutter 78 is attached to the front end of the case 74 so as to be openable and closable.

[0017] The drive device of the case 74 moves the nozzle 76 between a storage position P1 where the entire nozzle 76 is stored inside the case 74, and a cleaning position P2 where a part of the nozzle 76 is exposed from the case 74 to clean the user's buttocks. In Fig. 2, the nozzle 76 located at the storage position P1 and the shutter 78 that covers the tip of the nozzle 76 when the nozzle 76 is located at the storage position P1 are shown by solid lines, and the nozzle 76 located at the cleaning position P2 and the shutter 78 that is open when the nozzle 76 is located at the cleaning position P2 are shown by imaginary lines.

[0018] (Configuration of the water outlet) The water discharger 40 discharges flush water in the tank 18 into the toilet bowl 22. As shown in Fig. 6, the water discharger 40 includes a pump 42, a connecting pipe 44, a check valve 45, a switching valve device 46, branch pipes 48a, 48b, 48c, 48d, water discharge nozzles 50 and 52, a water discharge opening 54, and a discharge member 60.

[0019] The pump 42 draws in the wash water in the tank 18 and pressurizes it. The pump 42 sends the pressurized wash water to a communicating pipe 44. The communicating pipe 44 communicates with the pump 42. The communicating pipe 44 defines a flow path through which the wash water flows. The communicating pipe 44 communicates with a switching valve device 46 via a check valve 45. The check valve 45 allows the wash water to flow from the pump 42 toward the switching valve device 46. The check valve 45 restricts the wash water from flowing from the switching valve device 46 toward the pump 42. This makes it possible to prevent the wash water from flowing back to the pump 42 via the communicating pipe 44. By arranging the check valve 45 on the pump 42 side relative to the switching valve device 46, the number of check valves 45 can be reduced.

[0020] The switching valve device 46 connects the communication pipe 44 to at least one of the branch pipes 48a, 48b, 48c, and 48d. The communication pipe 44 and the branch pipes 48a, 48b, and 48c are each made of a resin such as a synthetic resin. The branch pipes 48a and 48c use synthetic rubber in at least one of the connection parts between the pump 42 and the water discharge nozzles 50 and 52 to improve liquid tightness. The branch pipe 48d has an upstream portion 48e extending from the pump 42 made of the same resin as the branch pipe 48a. Meanwhile, downstream of the upstream portion 48e of the branch pipe 48d, a downstream portion 48f disposed in the toilet body 20 is disposed. The downstream portion 48f is made of ceramic.

[0021] A water discharge nozzle 50 is connected to the branch pipe 48a. When the communication pipe 44 is connected to the branch pipe 48a via the switching valve device 46, flush water is discharged from the water discharge nozzle 50 into the toilet bowl 22. A discharge member 60 is connected to the branch pipe 48b. When the communication pipe 44 is connected to the branch pipe 48b via the switching valve device 46, flush water is discharged from the discharge member 60 into the toilet bowl 22. A water discharge nozzle 52 is connected to the branch pipe 48c. When the communication pipe 44 is connected to the branch pipe 48c via the switching valve device 46, flush water is discharged from the water discharge nozzle 52 into the toilet bowl 22. A water discharge opening 54 is connected to the branch pipe 48d. When the communication pipe 44 is connected to the branch pipe 48d via the switching valve device 46, flush water is discharged from the water discharge opening 54 into the toilet bowl 22.

[0022] The toilet bowl 22 has a rear portion 25. The rear portion 25 is a region of the surface of the toilet bowl 22 that connects the rear ends of the side portions 26 on both the left and right sides along the rear end of the water surface WS.

[0023] As shown in FIG. 3, in a cross section perpendicular to the left-right direction at the center of the left-right direction of the toilet bowl 22, the rear portion 25 has a straight line shape 25a that slopes downward from the upper edge 22a toward the front, i.e., toward the water surface WS, a curved shape 25b that curves to bulge downward at an intermediate position between the bottom end of the straight line shape 25a and the water surface WS, and a curved shape 25c that curves to bulge upward from the bottom end of the curved shape 25b. In the "curved shape that bulges downward," in a cross section perpendicular to the left-right direction, a line segment representing a surface located between any two points of the curved shape is located below the straight line connecting the any two points (for example, the straight line L1 in FIG. 3). The straight line shape 25a extends in the tangential direction of the curved shape 25b. The boundary between the straight line shape 25a and the curved shape 25b is smooth and continuous without any step. Similarly, the boundary between the curved shape 25b and the curved shape 25c is smooth and continuous without any step. Since the rear portion 25 has a curved shape 25b located in the section from the upper edge 22a to the height of the water surface WS, the rear portion 25 can be made difficult to see by the user.

[0024] As shown in Fig. 3, in the toilet apparatus 10 of this embodiment, the lower end 78d of the shutter 78 of the cleaning nozzle device 72 of the functional part 70 is located below the upper edge 22a of the rear part 25. As a result, when viewed from above by a user, the upper edge 22a of the rear part 25 is hidden by the cleaning nozzle device 72. This makes it difficult for the user to see the upper edge 22a.

[0025] As shown in FIG. 4, the discharge member 60 is disposed in the rear portion 25. The discharge member 60 is made of resin. The discharge member 60 includes a head 62 and a body 68 extending rearward from the head 62. The head 62 is a cover exposed inside the toilet bowl 22. The head 62 includes an upper surface 63u, a front surface 63f, a first rib 65u, a second rib 65m, a third rib 65d, an upper discharge port 64u, and a front discharge port 64f. The first rib 65u, the second rib 65m, and the third rib 65d extend from the back surface (i.e., the rear surface) of the head 62 toward the body 68. The body 68 is inserted into a through hole 27 penetrating the rear portion 25 of the toilet bowl 22. The body 68 has a cylindrical shape. The rear end of the body 68 is connected to the branch pipe 48b. The front end of the body 68 extends radially beyond the periphery of the through-hole 27. The front end of the body 68 extends vertically and horizontally along the rear portion 25. The front surface of the front end of the body 68 abuts against the rear surface of the head 62. The head 62 is welded to the front end of the body 68. A gap located between the lower end of the head 62 and the lower end of the body 68 defines a lower discharge port 64d.

[0026] The body 68 of the discharge member 60 has a thread that meshes with the nut 66. The front end of the body 68 and the nut 66 sandwich the rear portion 25 of the toilet bowl 22, thereby fixing the discharge member 60 to the rear portion 25. Therefore, no stress is directly applied to the head 62, which is welded to the front end of the body 68, when the nut 66 is fastened. This makes it possible to prevent shear force from being applied to the welded portion between the head 62 and the front end of the body 68 due to the fastening of the nut 66.

[0027] 3, the discharge member 60 is located rearward of the lower end 78d of the shutter 78. This makes it possible to make the discharge member 60 less visible to the user.

[0028] Furthermore, the discharge member 60 is located above the intersection Pt1 between a straight line L2 extending downward along the front surface 78f of the shutter 78 and the rear part 25 of the toilet bowl 22. As a result, when a user views the discharge member 60 from above, the discharge member 60 is hidden by the cleaning nozzle device 72. This makes it possible to make the discharge member 60 less visible to the user.

[0029] As shown by the arrow F10 in FIG. 3 and FIG. 4, the discharge member 60 discharges the cleaning water toward the upper edge 22a of the rear portion 25 through the upper discharge port 64u. That is, the discharge member 60 discharges the cleaning water toward the upper edge 22a of the rear portion 25 at the center of the toilet bowl 22 in the left-right direction. This makes it possible to remove the dirt adhering to the upper edge 22a at the center of the toilet bowl 22 in the left-right direction. As shown by the arrow F11, the discharge member 60 discharges the cleaning water toward the curved shape 25b of the rear portion 25 through the lower discharge port 64d. This makes it possible to remove the dirt adhering to the rear portion 25. As shown by the arrow F12, the discharge member 60 discharges the cleaning water toward the front surface 63f of the head 62 through the front discharge port 64f. This makes it possible to remove the dirt adhering to the front surface 63f of the head 62.

[0030] The front surface 63f of the head 62 is textured. Therefore, the front surface 63f is provided with fine protrusions. In this embodiment, the front surface 63f is provided with protrusions having a height of 15 μm. The protrusions disperse droplets of cleaning water and cause them to flow on the front surface 63f. That is, the protrusions guide the cleaning water. By providing the front surface 63f with protrusions, the cleaning water can be caused to flow uniformly on the front surface 63f. The method of forming the protrusions on the front surface 63f is not limited to texture, and the protrusions may be formed, for example, by cutting a mold, or by post-processing.

[0031] The head 62 and the body 68 of the discharge member 60 are not painted. The head 62 and the body 68 of the discharge member 60 are not covered with paint. The head 62 and the body 68 are formed of so-called adhesive resin. This allows the painting process to be omitted, improving the production efficiency of the discharge member 60. Furthermore, it is possible to prevent the height of the convex part of the head 62 from being lowered by the paint coating. The discharge member 60 is formed of a resin of the same color as the ceramic of the toilet body 20. In this specification, the same color means, for example, that the color difference (ΔE) between the rear part of the toilet bowl 22 of the toilet body 20 and the front surface 63f of the head 62 of the discharge member 60 is 5 or less. Since the rear part 25 of the toilet bowl 22 and the discharge member 60 are formed of the same color, the discharge member 60 is not easily noticeable.

[0032] As shown by the arrows in the body 68 in FIG. 4, flush water flowing into the body 68 from the branch pipe 48b collides with the rear surface of the head 62 and spreads in the vertical and horizontal directions. The flush water passes between the ribs 65u, 65m, 65d and the internal discharge port 64m of the first rib 65u before being discharged from the discharge ports 64u, 64f, 64d. For this reason, the discharge member 60 can limit the flow speed of the flush water being discharged. The inventors have discovered that the efficiency of removing waste matter with flush water is improved when the surface flow speed of the flush water at the rear portion 25 is 0.5 m / s or more. In the toilet device 10 of this embodiment, the shape and position of the ribs 65u, 65m, 65d and the shape and position of the discharge ports 64u, 64m, 64d, 64f of the discharge member 60 are set so that the surface flow speed of the flush water at the rear portion 25 is 0.5 m / s. This ensures that dirt adhering to the rear portion 25 can be removed.

[0033] As shown in the enlarged view at the bottom of FIG. 5, the discharge member 60 has a pair of side discharge ports 64L, 64R. The pair of side discharge ports 64L, 64R are located on the left and right side surfaces of the discharge member 60. The pair of side discharge ports 64L, 64R, like the lower discharge port 64d, are defined by a gap located between the head 62 of the discharge member 60 and the front end of the body 68. The first rib 65u, the second rib 65m, and the third rib 65d of the head 62 define a flow path through which the cleaning water flows between the head 62 and the front end of the body 68. As shown in FIG. 5, the first rib 65u extends in the horizontal direction. The second rib 65m is displaced upward as it approaches the side discharge ports 64L, 64R. The third rib 65d is displaced downward as it approaches the side discharge ports 64L, 64R. As a result, as shown by arrows F13 and F14 in Fig. 5, flush water is discharged from the side discharge ports 64L and 64R so as to spread out in the vertical direction. This allows flush water to be supplied over a wide area of ​​the rear portion 25. The discharge member 60 discharges flush water symmetrically. For this reason, this specification will mainly describe the range of flush water to the right of the left-right center of the toilet bowl 22 within the discharge range A1 of the discharge member 60, but the same applies to the left side.

[0034] As shown in the enlarged view at the lower right of FIG. 5, the discharge member 60 discharges the washing water upward through the three upper discharge ports 64u. The washing water flows upward along the linear shape 25a of the rear portion 25. The washing water flows along the linear shape 25a and reaches the lower surface 30a of the upper end flange 30. The washing water that reaches the lower surface 30a flows to the right along the lower surface 30a. Furthermore, the discharge member 60 discharges the washing water to the right through the side discharge port 64R. The washing water discharged through the side discharge port 64R causes the washing water discharged through the upper discharge port 64u to flow further to the right. The washing water flows to the right along the lower surface 30a of the upper end flange 30, beyond the right end 24R of the water storage section 24. The discharge member 60 discharges the washing water to the upper end edge 22a over a wide range from the center of the rear portion 25 in the left-right direction to the left-right ends of the water storage section 24. This makes it possible to remove dirt over a wide range.

[0035] After passing through the right end 24R of the water storage section 24, the flush water gradually descends along the rear section 25 and reaches the side wall 53. As shown in FIG. 5, the side wall 53 is a wall that extends in the front-rear direction along the water-spouting nozzle 52. The side wall 53 has a flow path surface 53c and a toilet bowl surface 53b. The flow path surface 53c of the side wall 53 defines a space that houses the water-spouting nozzle 52. The flow path surface 53c abuts against the water-spouting nozzle 52. As shown by the arrow F20 in FIG. 3, the water-spouting nozzle 52 is a flow path that spouts flush water forward along the upper part of the toilet bowl 22. That is, the flow path surface 53c of the side wall 53 defines a flow path that spouts flush water forward within the toilet bowl 22 along the upper part of the toilet bowl 22. The toilet bowl surface 53b of the side wall 53 faces the side discharge port 64R on the right side of the discharge member 60. Toilet bowl surface 53b constitutes part of the surface of toilet bowl 22. The end of flushing water discharge range A1 is located at the center in the up-down direction of toilet bowl surface 53b of side wall 53. In other words, discharge member 60 discharges flushing water onto the lower half of toilet bowl surface 53b of side wall 53. In the toilet apparatus 10 of this embodiment, flushing water discharged from discharge member 60 can remove waste adhering to the lower half of toilet bowl surface 53b of side wall 53.

[0036] The toilet apparatus 10 of this embodiment uses the discharge member 60 to discharge flush water onto the upper edge 22a of the toilet bowl 22 near the left-right center of the toilet bowl 22, i.e., at least partially between the left and right ends of the water collection section 24. This makes it possible to remove waste adhering over a wider area of ​​the rear portion 25 of the toilet bowl 22, compared to the prior art.

[0037] (Correspondence) The water discharge nozzle 52 is an example of an “upper flow path.” The height of the water surface WS is an example of the “height of the wash water.”

[0038] Second embodiment As shown in Figure 7, when comparing a toilet apparatus 210 of the second embodiment with the toilet apparatus 10 of the first embodiment, the toilet apparatus 210 of the second embodiment is equipped with a toilet portion 212 instead of the toilet portion 12, and a cleaning nozzle device 272 instead of the cleaning nozzle device 72. In other respects, the toilet apparatus 210 of the second embodiment has the same configuration as the toilet apparatus 10 of the first embodiment.

[0039] The toilet bowl portion 212 of this embodiment has a different shape from the toilet bowl portion 12 of the first embodiment. Specifically, the toilet bowl portion 212 of this embodiment has an upper rim 230 instead of the upper end flange 30 of the toilet bowl portion 12 of the first embodiment. The upper rim 230 extends from the toilet bowl 222 to the outside of the toilet bowl 222. The upper rim 230 does not extend from the surface of the toilet bowl 22 to the inside of the toilet bowl 22, unlike the upper end flange 30. In other words, the upper rim 230 does not cover the edge of the toilet bowl 122 when viewed from above.

[0040] The rear part 225 of the toilet bowl 222 includes a straight part 225a, an upper end surface 234 of the upper rim 230, and a curved part 232 connecting the straight part 225a and the upper end surface 234. The straight part 225a holds the discharge member 60. The straight part 225a extends linearly upward. The straight part 225a is inclined so as to be displaced rearward as it advances upward. In a modified example, the straight part 225a may extend vertically or may be inclined so as to be displaced forward as it advances upward. In this specification, "extending linearly" indicates that the surface of the toilet bowl 222 is not curved. For example, a portion including a minute distortion formed unintentionally during molding of the toilet bowl part 212 may correspond to "extending linearly".

[0041] Curved portion 232 is curved so as to bulge upward. Curved portion 232 is displaced more rearward as it approaches upper end surface 234. Curved portion 232 is curved so as to be displaced more rearward as it approaches upper end surface 234. The boundary between straight portion 225a and curved portion 232 is smooth and continuous without any steps. Similarly, the boundary between curved portion 232 and upper end surface 234 is smooth and continuous without any steps. In this embodiment, the boundary between straight portion 225a and curved portion 232 is upper end edge 222a of toilet bowl 222.

[0042] Washing nozzle device 272 of this embodiment includes branch nozzle 279 in addition to case 274, nozzle 276, and shutter 278. Branch nozzle 279 is located below nozzle 276 and branches off from nozzle 276. Branch nozzle 279 penetrates the bottom surface of case 274 and opens toward toilet bowl 222. As shown by arrow F30 in FIG. 7, branch nozzle 279 ejects wash water toward upper edge 222a of toilet bowl 222.

[0043] The flush water discharged from the branch nozzle 279 flows along the straight portion 225a of the rear portion 225 of the toilet bowl 222 and reaches the upper surface 63u of the discharge member 60. This makes it possible to remove waste adhering to the upper surface 63u of the discharge member 60.

[0044] The toilet apparatus 210 of this embodiment uses the discharge member 60 and the flushing nozzle apparatus 272 to discharge flush water onto the upper edge 222a of the toilet bowl 222 near the left-right center of the toilet bowl 222, i.e., at least a portion between the left and right ends of the water collection section 24. This makes it possible to remove waste adhering over a wider area of ​​the rear portion 225 of the toilet bowl 222, compared to conventional technology. In this embodiment, the branch nozzle 279 is an example of a "second discharge member."

[0045] Third embodiment As shown in FIG. 8, the toilet device of this embodiment is a urinal device 310. The urinal device 310 is used when the user is standing. The urinal device 310 includes a toilet body 320 and a discharge member 360. The toilet body 320 is made of ceramic. The toilet body 320 includes an upper end wall 330, a pair of side end walls 323, and a toilet bowl 322. The upper end wall 330 is disposed at the upper end of the toilet body 320 and extends in the left-right direction. Each of the pair of side end walls 323 extends downward from each of the left and right ends of the upper end wall 330. Each of the pair of side end walls 323 extends at its lower end to the left-right center of the toilet body 320. The pair of side end walls 323 are connected at the left-right center of the toilet body 320 at the lower end of the toilet body 320. The toilet bowl 322 is disposed at the rearmost part of the toilet body 320. The toilet bowl 322 is surrounded by an upper end wall 330 and a pair of side end walls 323.

[0046] Toilet bowl 322 has rear portion 325 extending in the vertical direction. A bottom portion extending in the horizontal direction is disposed at the lower end of rear portion 325. Toilet bowl 322 has water pooling portion 324 at the bottom. Flush water is pooled in water pooling portion 324. A drain pipe (not shown) is connected to the bottom of water pooling portion 324 via a drain outlet (not shown). Flush water is pooled in the drain pipe.

[0047] As shown in Fig. 9, a discharge member 360 is disposed near the upper end of the toilet body 320. The discharge member 360 has a similar configuration to the discharge member 60 provided in the toilet apparatus 10 of the first embodiment. In the urinal apparatus 310, flush water stored in a tank (not shown) is pressurized by a pump in the same manner as in the toilet apparatus 10, and is discharged onto the surface of the toilet bowl 322 via the discharge member 360. As shown by arrows F40, F41, F44, and F43 in Fig. 8, the discharge member 360 discharges flush water in the up, down, left, and right directions. The flush water discharged from the discharge member 360 flows downward along the rear part 325 of the toilet bowl 322.

[0048] As shown in Figure 9, rear portion 325 of toilet bowl 322 slopes forward as it goes upward. Upper end wall 330 located at the upper end of rear portion 325 extends in the front-to-rear direction. Upper end wall 330 and straight portion 325a of rear portion 325 are connected via a curved portion that displaces forward as it goes upward. The curved portion is curved so as to bulge upward. As shown in Figure 8, upper edge 322a of rear portion 325 extends in the left-to-right direction along the lower end of the curved portion.

[0049] The urinal apparatus 310 of this embodiment uses the discharge member 360 to discharge flush water onto the upper edge 322a of the toilet bowl 322 near the left-right center of the toilet bowl 322, i.e., at least partially between the left and right ends 324L, 324R of the water collecting section 324. This makes it possible to remove waste adhering over a wider area of ​​the rear part 325 of the toilet bowl 322, compared to the conventional technology.

[0050] Aspects of the technology disclosed in this specification are listed below.

[0051] The first aspect is a toilet apparatus. The toilet apparatus may include a toilet bowl having a water storage section in which flush water is stored, and a discharge section that discharges flush water onto the surface of the toilet bowl. The discharge section may discharge the flush water onto an upper end of a rear part of the surface in at least a portion between the left and right ends of the water storage section.

[0052] The second aspect is also a toilet apparatus. The toilet apparatus may include a toilet bowl having a water storage section in which flushing water is stored, and a discharge section that discharges flushing water onto the surface of the toilet bowl. The discharge section may discharge the flushing water to the upper end of a straight section that extends linearly upward, at least in a portion between the left and right ends of the water storage section, which is the upper end of the rear part of the surface. The upper end of the straight section may be located at the lower end of a curved section that displaces rearward as it approaches the upper end surface of the toilet bowl.

[0053] In a third aspect, in any one of the first and second aspects above, the discharge portion may discharge the flush water onto the upper end, at least at the left-right center of the toilet bowl, between the left and right ends of the water storage portion.

[0054] In a fourth aspect, in any one of the first to third aspects, the discharge portion may discharge the wash water to the upper end over a range extending to the left and right ends of the water storage portion.

[0055] In a fifth aspect, in any one of the first to fourth aspects, the toilet apparatus may further include a functional unit attached to the toilet bowl and configured to perform one or more functions including a user flushing function for flushing a user. A lower end of the functional unit may be located lower than the upper end of the rear portion of the surface.

[0056] In a sixth aspect, in any one of the first to fifth aspects, the toilet bowl may include a sidewall that defines an upper flow path that discharges the flushing water onto an upper portion of the surface of the toilet bowl. The discharge portion may further discharge the flushing water onto at least a lower half of the sidewall.

[0057] In a seventh aspect, in any one of the first to sixth aspects, the discharge portion may discharge the cleaning water onto the surface so that a surface flow velocity of the cleaning water is 0.5 m / s or more.

[0058] In an eighth aspect, in any one of the first to seventh aspects above, the rear portion of the surface of the toilet bowl may be curved so as to bulge downward in at least a portion between the left and right ends of the water collection section, in a section from the upper end to at least the height of the stored flush water.

[0059] In a ninth aspect, in any one of the first to eighth aspects, the discharge portion may include a discharge member attached to the rear portion of the surface of the toilet bowl.

[0060] In a tenth aspect, in the ninth aspect, the discharge member may further discharge the cleaning water onto either an upper surface or a front surface of the discharge member.

[0061] In an eleventh aspect, in any one of the ninth and tenth aspects above, the toilet apparatus may further comprise a second discharge member that discharges the flush water onto either an upper surface or a front surface of the discharge member.

[0062] In a twelfth aspect, in any one of the ninth to eleventh aspects, the discharge member may have a flow path having a discharge port located on both left and right sides of the discharge member. An upper wall defining the flow path may be displaced upward as it approaches the discharge port.

[0063] In a thirteenth aspect, in any one of the ninth to twelfth aspects, the toilet apparatus may further include a functional unit attached to the toilet bowl and configured to perform one or more functions including a user washing function for washing a user. The discharge member may be located rearward of a lower end of the functional unit.

[0064] In a fourteenth aspect, in the thirteenth aspect, the functional part may include a nozzle movable between a washing position where washing water is discharged toward the user and a storage position located rearward of the washing position, and a shutter that covers a front end of the nozzle located at the storage position. The lower end of the functional part may be a lower end of the shutter.

[0065] In a fifteenth aspect, in the fourteenth aspect, the discharge member may be located above an intersection point between a straight line extending downward along a front surface of the shutter of the functional portion and the surface of the toilet bowl.

[0066] In a sixteenth aspect, in any one of the ninth to fifteenth aspects, the surface of the discharge member may be formed of a resin that is not covered with paint.

[0067] In a seventeenth aspect, in the sixteenth aspect, a color difference (ΔE) between the surface of the discharge member and the surface of the toilet bowl may be 5 or less.

[0068] In an eighteenth aspect, in any one of the sixteenth to seventeenth aspects, the discharge member may have a convex portion on the surface thereof that guides the cleaning water.

[0069] Specific examples of the technology disclosed in this specification have been described above in detail. These are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples exemplified above. Modifications of the above embodiment are listed below.

[0070] (1) The toilet apparatus 10 does not have to be equipped with a discharge member 60. In this modification, for example, flushing water may be supplied to the upper edge 22a via an opening located in the side wall 53 and the water-discharge nozzle 52. In this modification, the opening and the water-discharge nozzle 52 are an example of a "discharge portion." In another modification, the upper flange 30 has a hollow structure, and flushing water may be supplied to the upper edge 22a via an opening located on the underside of the upper flange 30. In this modification, the opening is an example of a "discharge portion."

[0071] (2) The discharge member 60 does not have to discharge flush water onto the upper edge 22a at the left-right center of the toilet bowl 22. In this modification, for example, the discharge member 60 does not have to have the central upper discharge outlet 64u among the three upper discharge outlets 64u.

[0072] (3) The flush water discharged from the discharge member 60 does not have to flow rightward from the center in the left-right direction of the toilet bowl 22 beyond the right end 24R of the water collecting section 24. In this modification, for example, the discharge member 60 may discharge flush water into a section of the upper edge 22a that is located above the discharge member 60.

[0073] (4) The toilet apparatus 10 does not have to include the functional portion 70. In another modification, the lower end 78d of the shutter 78 of the functional portion 70 may be located above the upper edge 22a.

[0074] (5) The toilet apparatus 10 does not have to be equipped with a water discharge nozzle 52. In another modification, the flush water discharged from the discharge member 60 does not have to reach the lower half of the side wall 53.

[0075] (6) The surface flow velocity at the rear portion 25 of the flush water discharged from the discharge member 60 may be lower than 0.5 m / s. For example, the surface flow velocity may be changed depending on whether the flush is a large flush or a small flush.

[0076] (7) The rear portion 25 does not have to have the curved shape 25b that curves downward. In this modification, the rear portion 25 may have a straight shape 25a that extends to the height of the water surface WS. In another modification, the water surface WS may be located below the curved shape 25b.

[0077] (8) The toilet apparatus 210 of the second embodiment does not have to be equipped with the discharge member 60. In this modification, flush water may be discharged onto the upper edge 222a of the rear part 225 of the toilet bowl 222 only by the branch nozzle 179.

[0078] (9) The discharge member 60 does not have to include the front discharge port 64f. That is, the discharge member 60 does not have to discharge cleaning water onto the front surface 63f of the head 62 through the front discharge port 64f. In this modification, for example, the branch nozzle 179 may discharge cleaning water onto the front surface 63f of the head 62. In another modification, the discharge member 60 may discharge cleaning water onto the upper surface 63u of the discharge member 60 through the upper discharge port 64u.

[0079] (10) The second rib 65m of the discharge member 60 may extend horizontally. That is, the second rib 65m does not have to be displaced upward as it approaches the side discharge ports 64L, 64R.

[0080] (11) The shutter 78 of the cleaning nozzle device 72 may be located above the case 74. In this case, the upper edge 22a may be located above the lower end of the case 74 of the cleaning nozzle device 72. In this modification, the lower end of the case 74 is an example of the "lower end of the functional part."

[0081] (12) The discharge member 60 may be located below the intersection point Pt1 between the rear portion 25 and a straight line L2 that extends downward along the front surface 78f of the shutter 78.

[0082] (13) The head 62 of the discharge member 60 may be coated. That is, the head 62 may be painted. In another modification, the discharge member 60 may be formed of, for example, a metal. That is, the discharge member 60 does not have to be formed of a resin.

[0083] (14) The color of head 62 of discharge member 60 may be different from the color of rear portion 25 of toilet bowl 22. In other words, the color difference (ΔE) between head 62 and rear portion 25 of toilet bowl 22 may be greater than 5.

[0084] (15) The front surface 63f of the discharge member 60 does not have to be textured. In other words, the front surface 63f does not have to have a protrusion that guides the cleaning water. In this modification, the front surface 63f may be a smooth surface that does not have any irregularities.

[0085] The technical elements described in the specification and / or drawings exhibit technical utility 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 the specification and / or drawings can achieve multiple objectives simultaneously, and achieving one of these objectives is itself technically useful. [Explanation of symbols]

[0086] 10,210: toilet device, 12,212: toilet part, 14: toilet seat, 14a: opening, 18: tank, 20,320: toilet body, 22,122,222,322: toilet bowl, 22a,222a,322a: upper edge, 24,324: water storage part, 24R,324R: right end, 25,225,325: rear part, 25a: straight shape, 25b: curved shape, 25c: curved shape, 26: side part, 2 7: through hole, 30: upper end flange, 30a: underside, 34: drain outlet, 36: drain pipe, 36a: curved position, 40: water discharge portion, 42: pump, 44: connecting pipe, 45: check valve, 46: switching valve device, 48a, 48b, 48c, 48d: branch pipe, 48e: upstream portion, 48f: downstream portion, 50, 52: water discharge nozzle, 53: side wall, 53b: toilet bowl surface, 53c: flow path surface, 54: water discharge opening , 60,360: discharge member, 62: head, 63f,78f: front surface, 63u: upper surface, 64L,64R: side discharge port, 64d: lower discharge port, 64f: front discharge port, 64m: internal discharge port, 64u: upper discharge port, 65d: third rib, 65m: second rib, 65u: first rib, 66: nut, 68: body, 70: functional part, 72,272: cleaning nozzle device, 74,274: Case, 76, 276: nozzle, 78, 278: shutter, 78d: lower end, 225a, 325a: straight section, 230: upper rim, 232: curved section, 234: upper end surface, 279: branch nozzle, 310: urinal device, 323: side end wall, 324L: left end, 330: upper end wall, A1: discharge range, L1, L2: straight line, P1: storage position, P2: flushing position, Pt1: intersection, WS: water surface

Claims

1. A toilet bowl having a water reservoir in which flush water is stored; A discharge unit that discharges flushing water onto the surface of the toilet bowl; Equipped with The discharge section discharges the wash water onto an upper end of a rear portion of the surface in at least a portion between the left and right ends of the water collecting section. Toilet device.

2. A toilet bowl having a water reservoir in which flush water is stored; A discharge unit that discharges flushing water onto the surface of the toilet bowl; Equipped with the discharge portion discharges the flush water to the upper end of a linear portion that extends linearly upward at least in a portion between the left and right ends of the water collecting portion, the upper end of the rear portion of the surface, The upper end of the straight portion is located at the lower end of a curved portion that is displaced rearward as it approaches the upper end surface of the toilet bowl. Toilet device.

3. the discharge portion discharges the flush water to the upper end at least at the center in the left-right direction of the toilet bowl between the left and right ends of the water collecting portion, A toilet device according to any one of claims 1 to 2.

4. The discharge portion discharges the flush water to the upper end over a range up to the left and right ends of the water storage portion. A toilet device according to any one of claims 1 to 2.

5. The toilet apparatus further includes a functional unit attached to the toilet bowl and configured to perform one or more functions including a user flushing function for flushing a user; a lower end of the functional portion is located below the upper end of the rear portion of the surface; A toilet device according to any one of claims 1 to 2.

6. the toilet bowl has a sidewall defining an upper flow passage for discharging the flush water onto an upper portion of the surface of the toilet bowl; The discharge unit further discharges the cleaning water onto at least a lower half of the side wall. A toilet device according to any one of claims 1 to 2.

7. The discharge unit discharges the cleaning water onto the surface so that a surface flow velocity of the cleaning water is 0.5 m / s or more. A toilet device according to any one of claims 1 to 2.

8. the rear portion of the surface of the toilet bowl is curved so as to bulge downward in at least a section between the left and right ends of the water collecting section from the upper end to at least the height of the stored flush water, A toilet device according to any one of claims 1 to 2.

9. 3. The toilet apparatus of claim 1, wherein the discharge portion includes a discharge member attached to the rear portion of the surface of the toilet bowl.

10. The discharge member further discharges the cleaning water onto either an upper surface or a front surface of the discharge member.

10. A toilet apparatus as claimed in claim 9.

11. The toilet device further comprises: a second discharge member that discharges the cleaning water onto either an upper surface or a front surface of the discharge member; 10. A toilet apparatus as claimed in claim 9.

12. the discharge member has a flow path having a discharge port located on both side surfaces in the left-right direction of the discharge member, The upper wall defining the flow path is displaced upward as it approaches the discharge port.

10. A toilet apparatus as claimed in claim 9.

13. The toilet apparatus further includes a functional unit attached to the toilet bowl and configured to perform one or more functions including a user flushing function for flushing a user; The discharge member is located rearward of a lower end of the functional portion.

10. A toilet apparatus as claimed in claim 9.

14. The functional unit includes: a nozzle that is movable between a cleaning position where cleaning water is discharged toward the user and a storage position that is located rearward of the cleaning position; a shutter for covering a front end of the nozzle located at the storage position; Equipped with The lower end of the functional portion is the lower end of the shutter.

14. A toilet apparatus according to claim 13.

15. The toilet apparatus according to claim 14, wherein the discharge member is located above an intersection point between a straight line extending downward along a front surface of the shutter of the functional portion and the surface of the toilet bowl.

16. 10. The toilet apparatus according to claim 9, wherein the surface of the discharge member is formed of a resin that is not covered with paint.

17. 17. The toilet apparatus of claim 16, wherein the color difference (ΔE) between the surface of the discharge member and the surface of the toilet bowl is 5 or less.

18. The toilet apparatus according to claim 16, wherein the discharge member has a protrusion on the surface thereof for guiding the flush water.

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