Water-washable toilet

Abstract

To provide a flush toilet bowl that can further reduce risk of damage to a water-resistant cover in functional components during maintenance, such as cleaning, further reduce the risk of water exposure to electrical components, further reduce the risk of water splashing from the water-resistant cover, and ensure sufficient space around the water-resistant cover.SOLUTION: A flush toilet bowl 1 of the present invention comprises: a toilet bowl body 4; a functional part 6; and a toilet seat unit U1 provided to cover an upper surface of the toilet bowl body and the functional part, the functional part comprises a water supply function part T that supplies flushing water to the toilet bowl body; an electrical component 38 that controls the water supply function part; and a water-resistant cover 42 that is provided at least above the electrical component, the water-resistant cover comprises an exposed surface wall 44 that is exposed when at least a portion of the functional part is raised and operated by lifting the toilet seat unit from the front or side, and the exposed surface wall comprises an inclined surface that is inclined relative to a vertical plane V0.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a flush toilet, and more particularly to a flush toilet that is flushed with flush water to expel waste. [Background technology]

[0002] Conventionally, flush toilets that are cleaned with flushing water to expel waste have been known that include a functional part located at the rear of the toilet body and a cover member that is arranged to cover the top of this functional part, as described in Patent Documents 1-3, for example. In the conventional flush toilets described in Patent Documents 1-3, the cover member naturally functions to protect the functional parts from external impacts and contact, but since the functional parts contain many electrical components that are vulnerable not only to moisture but also to water ingress caused by cleaning, etc., the cover member also serves the function of preventing these electrical components from becoming wet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-169538 [Patent Document 2] Japanese Patent Publication No. 2020-169537 [Patent Document 3] Japanese Patent Application Laid-Open No. 2014-95234 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional flush toilets described above, the functional parts become exposed when the cover member is temporarily removed or the toilet seat unit or private parts cleaning device located on the top surface of the toilet body is lifted, particularly during regular maintenance such as cleaning. This creates a problem in that, for example, if liquid detergent sprayed onto the top surface of the toilet body during cleaning or water used to wipe the top surface of the toilet body reaches the exposed surface of the functional part, there is a risk that electrical components of the functional part may become wet. Furthermore, in conventional flush toilets, when wiping off water that has spilled onto the surface of the water-resistant cover that covers the electrical components of the functional section during cleaning or other maintenance, the water-resistant cover can become deformed by being pressed by fingers or cleaning tools. As a result, the greater the deformation of the water damage prevention cover, the greater the risk that the water damage prevention cover may come into contact with the electrical components it covers, or that it may become impossible to ensure sufficient surrounding space for installing wiring cords connected to the electrical components.On the other hand, the greater the strength of the water damage prevention cover, such as its rigidity, the greater the risk of water splashing off the cover when it becomes wet. Therefore, in recent years, it has become a pressing issue to find ways to reduce the risk of electrical components in the functional section becoming wet during cleaning, while maintaining an appropriate strength for the water-resistant cover that covers the electrical components, reducing the risk of the water-resistant cover being pressed by fingers or the like and deforming and coming into contact with the electrical components, and ensuring sufficient space for installing wiring cords and the like around the electrical components.

[0005] Therefore, the present invention has been made to solve the problems of the prior art mentioned above and the issues that have been required in recent years, and aims to provide a flush toilet that can ensure effective space around the water damage prevention cover in the functional parts during maintenance such as cleaning, further reducing the risk of water damage to electrical components, and the risk of water splashing onto the water damage prevention cover. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides a flush toilet that is flushed with flushing water and discharges waste, comprising a toilet body with a bowl portion that receives waste, a functional portion that is located behind the bowl portion of the toilet body, and a toilet seat unit that is arranged to cover the upper surfaces of the toilet body and the functional portion, and at least a portion of the functional portion can be exposed from the front or side by lifting the toilet seat unit, the functional portion comprising a water supply function portion that turns the supply of flushing water to the toilet body on and off, electrical components that control the water supply function portion, and a water-proof cover that is arranged above at least the electrical components, the water-proof cover having a front wall surface that can be exposed when at least a portion of the functional portion is exposed from the front or side by lifting the toilet seat unit, and this front wall surface has an inclined surface that is inclined with respect to a vertical plane. In the present invention configured in this manner, for example, when cleaning the top surface of the toilet body, the toilet seat unit that covers the top surfaces of the toilet body and functional part is lifted, liquid detergent or the like is sprayed onto the top surface of the toilet body, and then the top surface is wiped clean with a cleaning tool or the like. In this case, not only is the top surface of the toilet body exposed, but at least a portion of the functional part located behind the bowl part of the toilet body is also exposed from the front or side, so if liquid detergent sprayed onto the top surface of the toilet body or moisture used to wipe the top surface of the toilet body with water reaches the exposed surface of the functional part, there is a risk that the functional part will become wet. However, according to the present invention, the electrical components that control the water supply function in the functional unit are covered above with a water-prevention cover, so that even if the exposed surface of the functional unit is accidentally exposed to water with liquid detergent, cleaning water, etc. when cleaning the toilet body, the electrical components of the functional unit can be prevented from becoming exposed to water. Furthermore, when the toilet seat unit is lifted and at least a portion of the functional part is exposed from the front or side, the exposed surface of the water-preventing cover has an inclined surface that is inclined relative to the vertical plane. Therefore, even if the surface of the water-preventing cover becomes wet with liquid detergent, cleaning water, etc., the water can be guided from above to below along the inclined surface and out of the water-preventing cover. This prevents water that gets on the inclined surface from splashing around and prevents water from accumulating on the inclined surface, compared to when the front wall surface of the water-prevention cover is a vertical surface. Furthermore, the inclined surface of the front wall of the water prevention cover allows the strength, such as rigidity, of the water prevention cover itself to be appropriately increased compared to when the front wall of the water prevention cover is a vertical surface. As a result, when performing maintenance such as cleaning, the toilet seat unit is lifted up to expose at least a portion of the functional part from the front or side, and even if a cleaning tool or the like comes into contact with or presses against the inclined surface of the front wall of the water-proof cover from the front or side of the functional part, the risk of the water-proof cover being damaged is reduced compared to when the front wall of the water-proof cover is a vertical surface. Furthermore, the inclined surface of the front wall of the water-proof cover allows for more surrounding space outside the inclined surface of the water-proof cover than if the front wall of the water-proof cover were a vertical surface, thereby ensuring sufficient surrounding space for installing wiring cords, etc. connected to electrical components. As a result, the risk of the water-resistant cover being damaged, the risk of electrical components being wet, and the risk of water that has been wetted onto the water-resistant cover splashing on the functional parts during maintenance such as cleaning can be further reduced, while still ensuring effective space around the water-resistant cover.

[0007] In the present invention, the inclined surface preferably has grooves formed in an uneven shape. In the present invention configured in this manner, the inclined surface of the front wall of the water-prevention cover is provided with a groove portion formed in an uneven shape, which reduces the force of water splashing and allows water that has fallen on the inclined surface to flow into the groove portion formed in an uneven shape and be quickly discharged outside the inclined surface. Therefore, the uneven groove portion can prevent water that has fallen on the inclined surface from hitting the inclined surface and scattering around.

[0008] In the present invention, the inclined surface is preferably provided above and spaced apart from the electrical component. In the present invention configured in this manner, the strength of the surface wall of the water-proof cover is increased by the inclined surface, so that, for example, even if a cleaning tool or the like accidentally comes into contact with or presses against the inclined surface of the surface wall of the water-proof cover when cleaning, the risk of the inclined surface of the surface wall of the water-proof cover being damaged can be reduced. Furthermore, even if a cleaning tool or the like accidentally comes into contact with or presses against the inclined surface of the front wall of the water-proof cover, causing the inclined surface of the front wall of the water-proof cover to become concave, the inclined surface of the front wall of the water-proof cover is located above and spaced apart from the electrical components, thereby reducing the risk of the inclined surface of the front wall of the water-proof cover in a concave state coming into contact with the electrical components.

[0009] In the present invention, preferably, the front wall surface of the water prevention cover further includes a flat surface extending horizontally from the end of the inclined surface. In the present invention configured in this manner, the outer wall surface of the water-prevention cover further has a flat surface extending horizontally from the end of the inclined surface, so that water that has fallen on the inclined surface can be guided from the end of the inclined surface to the flat surface. Therefore, the water-proof cover can be cleaned simply by wiping off the moisture guided to the flat surface of the outer wall of the water-proof cover, thereby reducing the risk of pressing on electrical components without excessively pressing on the inclined surface of the water-proof cover.

[0010] In the present invention, the groove is preferably provided on the inner side or below the inclined surface. In the present invention configured in this manner, the groove portion on the outer wall surface of the water-prevention cover is located inside or below the inclined surface, so that water that has fallen on the inclined surface can flow into the groove portion formed in an uneven shape and be quickly discharged outside the inclined surface. Therefore, the uneven groove portion can prevent water that has fallen on the inclined surface from hitting the inclined surface and scattering around.

[0011] In the present invention, the flat surface preferably includes a rear flat surface extending rearward from the rear end of the inclined surface, and this rear flat surface includes a rear groove portion formed in an uneven shape. In the present invention configured in this manner, the flat surface on the front wall of the water prevention cover has a rear flat surface that extends rearward from the rear end of the inclined surface, and this rear flat surface has a rear groove portion that is formed in an uneven shape.Therefore, even if water that hits the inclined surface rises along the inclined surface and reaches the rear flat surface, it can be discharged to the outside of the water prevention cover along the uneven rear groove portion of the rear flat surface. Therefore, the water that reaches the rear flat surface flows along the uneven rear groove portion, thereby preventing the water from splashing around. [Effects of the Invention]

[0012] The flush toilet of the present invention can secure effective space around the water damage prevention cover on the functional part during maintenance such as cleaning, further reducing the risk of water getting on electrical components, and the risk of water getting on the water damage prevention cover and splashing. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram showing the overall configuration of a flush toilet according to an embodiment of the present invention. [Figure 2]FIG. 1 is a perspective view of a flush toilet according to an embodiment of the present invention, seen from diagonally above and to the front right, showing the toilet seat unit lifted up relative to the top surface of the toilet body. [Figure 3] FIG. 3 is an enlarged perspective view showing part A of the flush water supply device for a flush toilet according to one embodiment of the present invention shown in FIG. 2. [Figure 4] FIG. 4 is a perspective view showing the state before the upper end of the upper float switch of the flush toilet according to one embodiment of the present invention shown in FIG. 3 is covered with the water damage prevention cover. [Figure 5] FIG. 4 is a cross-sectional view taken along line VV in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] A flush toilet according to one embodiment of the present invention will now be described with reference to the accompanying drawings. First, the overall structure of a flush toilet according to one embodiment of the present invention will be explained in outline using FIGS. Figure 1 is a diagram showing the overall configuration of a flush toilet according to one embodiment of the present invention, and Figure 2 is a perspective view of the flush toilet according to one embodiment of the present invention, seen from diagonally above and to the front right. As shown in Figures 1 and 2, a flush toilet 1 according to one embodiment of the present invention comprises a water supply channel (main water supply channel 2) through which flush water supplied from a main water supply source W0 such as a water line flows, a ceramic toilet body 4, and a flush water supply device 6.

[0015] Next, as shown in Figure 1, the toilet body 4 comprises a bowl portion 8 for receiving waste, a rim portion 10 formed on the upper edge of the bowl portion 8, and a drain trap portion 12 extending from the bottom of the bowl portion 8. 1 and 2, the flush water supply device 6, which will be described in detail later, is provided behind the bowl portion 8 of the toilet body 4, and is a functional part that enables flush water supplied from the main water supply passage 2 to be supplied to the toilet body 4. More specifically, this functional part is powered by electricity and includes the function of controlling the stop of flush water discharge into the bowl portion 8 of the toilet body 4.

[0016] Next, as shown in FIG. 1, a rim water channel 14 is formed inside the rim portion 10 on one of the left and right sides of the toilet body 4 (the right side when looking at the toilet body 4 from the front side). This rim water conduit 14 extends from the rear side of the toilet body 4 towards the front inside the rim section 10 on one of the left and right sides of the toilet body 4 (the right side when looking at the toilet body 4 from the front), and then bends towards the rear halfway, forming a so-called U-turn shape. Furthermore, a rim spout 14a is provided at the downstream end (rear downstream end) of this rim water conduit 14. Furthermore, the rim-side water supply passage 2a of the flush water supply device 6 is connected to the upstream side of the rim water conduit 14 of the toilet body 4. Flush water supplied from this rim-side water supply passage 2a to the rim water outlet 14a is discharged rearward from the rim water outlet 14a into the bowl section 8, thereby performing rim spouting.

[0017] Next, as shown in Figure 1, a jet water conduit 16 is formed from the outer surface to the bottom of the bowl portion 8 of the toilet body 4. The downstream side of this jet water conduit 16 is directed toward the inlet 12a of the drain trap portion 12 at the bottom of the bowl portion 8, and a jet water outlet 16a is provided at the downstream end of the jet water conduit 16. Additionally, a jet-side water supply passage 2b of the flush water supply device 6 is provided upstream of the jet water passage 16 of the toilet body 4. Flush water supplied from this jet-side water supply passage 2b to the jet water passage 16 of the toilet body 4 is discharged from the jet water spout 16a towards the drain trap section 12, causing jet spouting. Here, as shown in FIG. 1, the upstream side of the rim-side water supply passage 2 a of the flush water supply device 6 is connected to a switching valve 18 at branch point B of the main water supply passage 2 . On the other hand, as shown in Figure 1, the upstream side of the jet side water supply passage 2b of the flush water supply device 6 is connected to the pressure pump 22 of the flush water supply device 6, which is provided downstream of the water storage tank 20 of the flush water supply device 6.

[0018] Next, the drain trap section 12 of the toilet body 4 consists of an inlet section 12a provided at the bottom of the bowl section 8, an ascending pipe 12b rising from this inlet section 12a, and a descending pipe 12c descending from this ascending pipe 12b, with the top section 12d being between the ascending pipe 12b and the descending pipe 12c. As shown in FIG. 1, the outlet 12e of the downcomer pipe 12c of the drain trap portion 12 is connected to the inlet of a drain socket S located at the rear and below of the toilet body 4. Furthermore, as shown in Figure 1, the outlet on the rear side of the drain socket S is connected to the inlet of a drain pipe D extending from the rear wall (not shown) side of the toilet body 4. This allows wastewater discharged from the outlet 12e of the drain trap part 12 of the toilet body 4 to be discharged from the drain socket S into the drain pipe D on the wall side, resulting in a drainage form known as "wall-side drainage." Furthermore, the flush toilet 1 of this embodiment is not limited to this type of "wall-side drainage" drainage configuration, but can also be applied to a so-called "floor-side drainage" drainage configuration in which wastewater discharged from the outlet portion 12e of the drain trap portion 12 of the toilet body 4 is discharged from the drain socket S into a drain pipe below the installation surface (floor surface F) of the bottom of the toilet body 4.

[0019] 2, a toilet seat unit U1 is provided above the toilet body 4 so as to cover it. This toilet seat unit U1 includes a private parts washing device U2 provided on the rear side. Furthermore, the toilet seat unit U1 is arranged so that the rear portion thereof, including the private parts washing device U2, covers the washing water supply device 6 from above. Furthermore, by lifting the toilet seat unit U1 and the private parts cleansing device U2, at least a part of the cleansing water supply device 6 (details of which are shown in FIG. 2 below, part A (part of the cleansing water supply device 6)) can be exposed from the front or side. Incidentally, in the toilet seat unit U1 and the private parts cleansing device U2 shown in Figure 2, the toilet seat unit U1 is shown lifted up against the top surface of the toilet body 4, for example, when a user cleans the top surface of the toilet body 4 or performs maintenance on the cleaning water supply device 6.

[0020] Next, each component of the flush water supply device 6 of the flush toilet 1 according to this embodiment will be explained in outline using FIG. First, as shown in FIG. 1, the flush water supply device 6 comprises, from the upstream side to the downstream side of the main water supply passage 2, a stop valve 24, a branch fitting 26, a valve unit 28, and a switching valve 18. Next, the valve unit 28 functions as a water supply function part that supplies and stops the flushing water to the toilet body 4, and specifically includes a constant flow valve 30, a diaphragm-type main valve 32, and an electromagnetic valve 34 such as a solenoid valve. The flush water supply device 6 also includes a controller 36, which is an electrical component that controls the operation of the valve unit 28. The controller 36 is capable of functioning as a control unit that controls the opening and closing operation of the on-off valve (solenoid valve 34) of the valve unit 28, the switching operation of the selector valve 18, and the rotation speed and operating time of the pressure pump 22.

[0021] Furthermore, the constant flow valve 30 of the valve unit 28 is used to restrict the flush water that has passed from the stop valve 24 in the main water supply passage 2 through the branch fitting 26 to a predetermined flow rate or less. Incidentally, the branch fitting 26 can also be connected to a water supply pipe (not shown) for supplying cleansing water to the local cleansing device U2. Furthermore, in the valve unit 28, when the solenoid valve 34 is opened under the control of the controller 36, the main valve 32 opens, and the flushing water that has passed through the main valve 32 from the constant flow valve 30 is supplied to the switching valve 18 at the branch point B downstream of the main water supply line 2. Here, the switching valve 18 is capable of supplying flushing water from the main water supply passage 2 to both the rim side water supply passage 2a and the tank side water supply passage 2c at the same time, and the ratio of the amount of water supplied to the rim side and the tank side can be changed as desired.

[0022] Next, the flush water supply device 6 is equipped with a tank device T, which is a water supply function part that enables flush water supplied from the main water supply passage 2 to be supplied to the toilet body 4. This tank device T is equipped with a water storage tank 20 that is connected to the rear of the toilet body 4 and stores the flush water supplied from the main water supply passage 2, and a pump (pressurizing pump 22) that pressure-feeds the flush water in this water storage tank 20 to the toilet body 4. Furthermore, downstream of the branch point B on the downstream side of the main water supply channel 2, there are provided a rim side water supply channel 2a that communicates with the rim water conduit 14 of the toilet body 4, and a tank side water supply channel 2c that is connected to the water storage tank 20. As a result, the flush water supplied from the main water supply source W0 to the branch point B of the main water supply passage 2 is used as at least one of the rim water supply to the rim side water supply passage 2a and the tank water supply to the tank side water supply passage 2c.

[0023] Furthermore, the flush water supply device 6 is provided with a pump water supply passage 2d that extends from the downstream side of the tank side water supply passage 2c to the pressure pump 22, and a jet side water supply passage 2b that extends downstream from the pressure pump 22. As a result, in the flush toilet 1 of this embodiment, flush water supplied from the main water supply channel 2 under direct water supply pressure is supplied from the rim-side water supply channel 2a of the flush water supply device 6 through the rim water conduit 14 of the toilet body 4 to the rim water outlet 14a, making it possible for water to be discharged from the rim water outlet 14a (so-called "rim water discharge"). Furthermore, the flush water supplied from the main water supply passage 2 to the flush water supply device 6 passes through the tank side water supply passage 2c, the water storage tank 20, the pump water supply passage 2d and the pressure pump 22 of the flush water supply device 6, and then from the jet side water supply passage 2b through the jet water conduit 16 of the toilet body 4 to the jet water outlet 16a, making it possible for water to be discharged from the jet water outlet 16a (so-called ``jet water discharge''). In other words, the flush toilet 1 of this embodiment is capable of using both rim spouting of flush water directly pressurized from the main water supply line 2 and jet spouting of flush water pressurized by the pressure pump 22 from the water storage tank 20, making it a so-called hybrid flush toilet 1.

[0024] Next, an upper float switch 38 and a lower float switch 40 are respectively disposed inside the water storage tank 20. These float switches 38, 40 are capable of transmitting information on the detected water level inside the water storage tank 20 to the controller 36, and are part of the electrical components that allow the controller 36 to control the water supply and cutoff from the water storage tank 20 to the toilet body 4. For example, the upper float switch 38 switches on when the water level in the water tank 20 reaches a predetermined water level, and the controller 36 detects that the upper float switch 38 is on and closes the solenoid valve 34. On the other hand, the lower float switch 40 switches on when the water level in the water storage tank 20 drops to a predetermined water level that is lower than the predetermined water level detected by the upper float switch 38, and the controller 36 detects the on state of the lower float switch 40 and stops the pressure pump 22. In addition, the pressure pump 22 draws flush water stored in the water storage tank 20 into the pump water supply passage 2d, and pressurizes the flush water from this pump water supply passage 2d into the jet side water supply passage 2b, thereby discharging it from the jet water outlet 16a.

[0025] With this structure, during normal toilet flushing, the controller 36 detects the user's operation of the toilet flush switch (not shown), and activates the solenoid valve 34, the switching valve 18, and the pressure pump 22 in sequence. This causes water to start being discharged sequentially from the rim water outlet 14a and the jet water outlet 16a, and the cleaning water that has cleaned the inside of the bowl section 8 is discharged from the drain trap section 12 together with the dirt in the bowl section 8. Furthermore, after flushing is completed, the controller 36 opens the electromagnetic valve 34, the switching valve 18 is switched to the tank-side water supply passage 2c side, and flush water in the main water supply passage 2 is replenished to the water storage tank 20. When the water level in the water storage tank 20 rises and the upper float switch 38 detects the specified amount of water stored, the controller 36 closes the solenoid valve 34, causing the main valve 32 to close the main water supply line 2 and stopping the water supply.

[0026] Next, with reference to Figs. 3 to 5, details of part A of the flush water supply device for a flush toilet according to one embodiment of the present invention shown in Fig. 2 will be explained. FIG. 3 is an enlarged perspective view of part A of the flush water supply device for a flush toilet according to one embodiment of the present invention shown in FIG. As shown in Figure 3, a water damage prevention cover 42 is removably attached to the top surface 20a of the water storage tank 20 of the flush water supply device 6, near the front right corner when viewed from the front. This water damage prevention cover 42 is positioned so as to cover the top of the upper end 38a of the upper float switch 38 of the flush water supply device 6. 4 is a perspective view showing the state before the upper end 38a of the upper float switch 38 of the flush toilet 1 according to the embodiment of the present invention shown in FIG. 3 and 4, a hook portion 20b is provided at the front end of the top surface 20a of the water tank 20. A locking portion 42a that can be locked onto the hook portion 20b of the water tank 20 is provided at the front end of the water damage prevention cover 42. When attaching the water damage prevention cover 42 to the top surface 20a of the water storage tank 20, the locking portion 42a of the water damage prevention cover 42 is first hooked onto the hook portion 20b of the water storage tank 20 to lock it in place (see FIG. 4). Then, the entire water-proof cover 42 is bent upward toward the upper end 38a of the upper float switch 38, so that the entire water-proof cover 42 covers the upper end 38a of the upper float switch 38. Then, with the screw hole 20c on the top surface 20a of the water tank 20 and the screw hole 42b on the water-proof cover 42 aligned in the axial direction (vertical direction), the two screw holes 20c, 42b are fastened with a screw C1, thereby fixing the water-proof cover 42 to the top surface 20a of the water tank 20 (see Figure 3).

[0027] Next, FIG. 5 is a cross-sectional view taken along line VV in FIG. As shown in Figures 3 to 5, the water prevention cover 42 has a front wall surface 44 that can be exposed when at least a portion of the flush water supply device 6 is exposed from the front or side by lifting the toilet seat unit U1. The front wall surface 44 also has an inclined surface 46 that is inclined with respect to the vertical plane V0 (see FIG. 5). Furthermore, the front wall surface 44 includes a front flat surface 48 and a rear flat surface 50 that extend horizontally in the front-to-rear direction from the front end 46a and the rear end 46b of the inclined surface 46, respectively.

[0028] Next, as shown in FIG. 5, the inclined surface 46 and the flat surfaces 48, 50 are provided above the upper end 38a of the upper float switch 38 and spaced apart from each other. Furthermore, the vertical distance H1 from the top surface of the upper end portion 38a of the upper float switch 38 to the inclined surface 46 is set to increase from the front to the rear of the inclined surface 46. 3 to 5, the inclined surfaces 46 are provided with grooves (inclined grooves 52) formed in an uneven shape. The inclined grooves 52 are provided between (inside) the inclined surfaces 46 adjacent to each other on the left and right, and are provided below each inclined surface 46. Furthermore, as shown in FIGS. 4 and 5, the rear flat surface 50 is provided with a rear groove portion 54 formed in an uneven shape.

[0029] Next, the operation of the flush toilet 1 according to one embodiment of the present invention described above will be explained with reference to FIGS. First, with a flush toilet 1 according to one embodiment of the present invention, for example, when cleaning the top surface of the toilet body 4, the toilet seat unit U1 that covers the top surfaces of the toilet body 4 and the functional part (flush water supply device 6) is lifted, and liquid detergent or the like is sprayed onto the top surface of the toilet body 4, followed by wiping with a cleaning tool or the like. At this time, not only is the top surface of the toilet body 4 exposed, but at least a portion of the flush water supply device 6, which is located behind the bowl section 8 of the toilet body 4, is also exposed from the front or side. As a result, if liquid detergent sprayed onto the top surface of the toilet body 4 or moisture used to wipe the top surface of the toilet body 4 with water reaches the exposed surface of the flush water supply device 6, there is a risk that the flush water supply device 6 will become wet. However, with the flush toilet 1 of this embodiment, the upper end 38a of the upper float switch 38, which is an electrical component that controls the flush water supply device 6, is covered from above by a water damage prevention cover 42. As a result, even if the exposed surface of the flush water supply device 6 happens to be covered with liquid detergent, cleaning water, etc. when cleaning the toilet body 4, it is possible to prevent the upper end 38a of the upper float switch 38 and the electrical wiring around it from becoming covered with water. Furthermore, when at least a portion of the flush water supply device 6 is exposed from the front or side by lifting the toilet seat unit U1, the exposed front wall surface 44 of the water-exposure prevention cover 42 has an inclined surface 46 that is inclined with respect to the vertical plane V0. As a result, even if the front wall surface 44 of the water-exposure prevention cover 42 is exposed to water such as liquid detergent or cleaning water, the exposed water can be guided from above downward along the inclined surface 46 and guided to the outside of the water-exposure prevention cover 42. Therefore, compared to when the front wall surface 44 of the water-prevention cover 42 is a vertical surface V0, it is possible to prevent water that has fallen on the inclined surface 46 from scattering around and to prevent water from accumulating on the inclined surface 46. In addition, the inclined surface 46 of the front wall surface 44 of the water-proof cover 42 allows the strength, such as rigidity, of the water-proof cover 42 itself to be moderately increased compared to when the front wall surface 44 of the water-proof cover 42 is a vertical surface V0. As a result, during maintenance such as cleaning, when the toilet seat unit U1 is lifted and at least a part of the flush water supply device 6 is exposed from the front or side, even if a cleaning tool or the like comes into contact with or presses against the inclined surface 46 of the front wall surface 44 of the water-proof cover 42 from the front or side of the flush water supply device 6, the risk of the water-proof cover 42 being damaged can be reduced compared to when the front wall surface 44 of the water-proof cover 42 is a vertical surface V0. Furthermore, the inclined surface 46 of the front wall surface 44 of the water-proof cover 42 makes it possible to secure surrounding space outside the inclined surface 46 of the water-proof cover 42, compared to when the front wall surface 44 of the water-proof cover 42 is a vertical surface V0. This makes it possible to ensure sufficient surrounding space for installing wiring cords and the like connected to the upper float switch 38. As a result, when performing maintenance such as cleaning on the cleaning water supply device 6, the risk of the water damage prevention cover 42, the risk of the upper end 38a of the upper float switch 38 being wet, and the risk of water that has been wetted onto the water prevention cover 42 splashing can be further reduced, while still ensuring effective space around the water prevention cover 42.

[0030] Furthermore, with the flush toilet 1 of this embodiment, the inclined surface 46 of the front wall surface 44 of the flood prevention cover 42 is equipped with grooves (inclined grooves 52) formed in an uneven pattern. This reduces the force of splashing water, and allows water that gets on the inclined surface 46 to flow into the inclined grooves 52, which are formed in an uneven pattern, and to be quickly discharged outside the inclined surface. Therefore, the uneven groove portion 52 can prevent water that has fallen on the inclined surface 46 from hitting the inclined surface 46 and scattering around.

[0031] Furthermore, with the flush toilet 1 of this embodiment, the strength of the front wall surface 44 of the water-spill prevention cover 42 can be increased by the inclined surface 46. As a result, for example, even if a cleaning tool or the like accidentally comes into contact with or presses against the inclined surface 46 of the front wall surface 44 of the water-spill prevention cover 42 during cleaning, the risk of damage to the inclined surface 46 of the front wall surface 44 of the water-spill prevention cover 42 can be reduced. Furthermore, even if the inclined surface 46 of the front wall 44 of the water-proof cover 42 is accidentally contacted or pressed against by a cleaning tool or the like, causing the inclined surface 46 of the front wall 44 of the water-proof cover 42 to become concave, the inclined surface 46 of the front wall 44 of the water-proof cover 42 is located above and spaced apart from the upper end 38a of the upper float switch 38. This reduces the risk that the inclined surface 46 of the front wall surface 44 of the water prevention cover 42 in the recessed state will come into contact with the upper end portion 38a of the upper float switch 38.

[0032] Furthermore, according to the flush toilet 1 of this embodiment, the front wall surface 44 of the flood prevention cover 42 is provided with a front flat surface 48 and a rear flat surface 50 that extend horizontally in the front-to-rear direction from the front end 46a and rear end 46b of the inclined surface 46, respectively. This allows moisture that has fallen on the inclined surface 46 and descended to the front end 46a of the inclined surface 46 to be guided to the front flat surface 48, or moisture that has fallen on the inclined surface 46 and ascended to the rear end 46b of the inclined surface 46 to be guided from the rear end 46b of the inclined surface 46 to the rear flat surface 50. Therefore, the water-proof cover 42 can be cleaned simply by wiping off the water guided to the flat surfaces 48, 50 of the front wall surface 44 of the water-proof cover 42. This reduces the risk of pressing the upper end portion 38a of the upper float switch 38 without excessively pressing the inclined surface 46 of the water damage prevention cover 42.

[0033] Furthermore, in the flush toilet 1 according to this embodiment, the inclined groove portion 52 on the front wall surface 44 of the water damage prevention cover 42 is located between (inside) adjacent inclined surfaces 46 on the left and right, and is located below each inclined surface 46. This allows moisture that has fallen on the inclined surface 46 to flow into the inclined groove portion 52 formed in an uneven shape, and to be quickly discharged to the outside of the inclined surface 46. Therefore, the uneven inclined groove portion 52 can prevent water that has fallen on the inclined surface 46 from hitting the inclined surface 46 and scattering around.

[0034] Furthermore, with the flush toilet 1 of this embodiment, the flat surfaces 48, 50 on the front wall surface 44 of the flood prevention cover 42 are provided with a rear flat surface 50 that extends rearward from the rear end portion 46b of the inclined surface 46. This rear flat surface 50 is then provided with a rear groove portion 54 that is formed in an uneven shape. As a result, even if water that hits the inclined surface 46 rises along the inclined surface 46 and reaches the rear flat surface 50, it can be discharged to the outside of the water prevention cover 42 along the uneven rear groove portion 54 of the rear flat surface 50. Therefore, the water that reaches the rear flat surface 50 flows along the uneven rear groove portion 54, and therefore, splashing of the water to the surroundings can be suppressed. [Explanation of symbols]

[0035] 1. Flush toilet according to one embodiment of the present invention (hybrid flush toilet) 2 Main water supply channel 2a Rim side water supply channel 2b Jet side water supply channel 2c Tank side water supply channel 2d Pump supply line 4 Toilet body 6 Cleaning water supply device (functional part) 8 Bowl section 10 Rim 12 Drain trap section 12a Inlet of drain trap 12b Drain trap riser 12c Downcomer pipe of drain trap 12d Top of drain trap 12e Outlet of the drain trap 14 Rim Waterway 14a Rim Spout 16 Jet Waterway 16a Jet nozzle 18 Switching valve 20 Water Tank 20a Top of the water tank 20b Hook part 20c screw hole 22 Pressure pump 24 Stop valve 26 Branch fitting 26a Power outage switching valve 28 Valve unit (water supply function part) 30 Constant flow valve 32 Diaphragm type main valve 34 Solenoid valve 36 Controller (electrical parts) 38 Upper float switch (electrical part) 38a Upper end of upper float switch (electrical part) 40 Lower float switch 42 Water protection cover 42a Locking part 42b screw hole 44 Front wall 46 Slope 46a Front end of inclined surface 46b Rear end of inclined surface 48 Front flat surface (flat surface) 50 Rear flat surface (flat surface) 52 Slanted groove 54 Posterior groove B Branch C1 screw D Drain pipe F Floor H1 Vertical distance from the top surface of the upper float switch to the inclined surface S drain socket T tank device (cleaning water supply device) U1 Toilet seat unit U2 Local Cleansing Device V0 vertical plane W0 Main water supply source

Claims

1. A flush toilet that is flushed with flush water to discharge waste, a toilet body having a bowl portion for receiving waste; a functional part provided behind the bowl part of the toilet body; a toilet seat unit provided to cover the upper surfaces of the toilet body and the functional part, and which can expose at least a portion of the functional part from the front or side by lifting the toilet seat unit; The functional unit includes a water supply functional unit that supplies and stops flush water to the toilet body, an electric component that controls the water supply functional unit, and a water prevention cover provided above at least the electric component, the water-proof cover has a front wall surface that can be exposed when at least a part of the functional part is exposed from the front or side by lifting the toilet seat unit, and the front wall surface has an inclined surface that is inclined with respect to a vertical plane; A flush toilet wherein the inclined surface is provided with grooves formed in an uneven shape.

2. 2. The flush toilet according to claim 1, wherein the inclined surface is provided above and spaced apart from the electrical component.

3. 3. The flush toilet according to claim 1 or 2, wherein the front wall surface of the water damage prevention cover further comprises a flat surface extending horizontally from the end of the inclined surface.

4. 2. The flush toilet according to claim 1, wherein the groove is provided inside or below the inclined surface.

5. 4. The flush toilet according to claim 3, wherein the flat surface comprises a rear flat surface extending rearward from the rear end of the inclined surface, and this rear flat surface comprises a rear groove portion formed in an uneven shape.

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