Toilet device

Abstract

To provide a toilet device capable of suppressing filth and sewage adhering to a shutter part from being left in a bowl part.SOLUTION: A toilet flushing device includes a bowl, a flush water supplier that supplies flush water to the bowl, a flush nozzle provided so as to be capable of advancing and retreating in a front-back direction, a shutter that is provided between the bowl and the flush nozzle and is openable and closable, a shutter washer that washes the shutter by discharging flush water, and a controller that controls the flush water supplier and the shutter washer. When washing of the shutter part by the shutter washing part is performed, the washing of the shutter part by the shutter washing part is ended before the end of the toilet washing.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a toilet device. [Background technology]

[0002] A known toilet device has a shutter section provided at an opening through which a cleaning nozzle moves, and a shutter cleaning section that supplies water to the shutter section to form a water film to clean the shutter section (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-173288 Summary of the Invention [Problem to be solved by the invention]

[0004] In the toilet device described above, there was a concern that the flushing water used to clean the shutter section would flow down into the bowl section along with the dirt and sewage adhering to the shutter section and remain there.

[0005] The present invention has been made to solve the above-mentioned problems, and aims to provide a toilet device that can prevent dirt and wastewater adhering to the shutter section from being left in the bowl section. [Means for solving the problem]

[0006] The present invention is a toilet device comprising a bowl section, a flushing water supply section that supplies flushing water to the bowl section, a flushing nozzle that is movable forward and backward, a shutter section that is arranged between the bowl section and the flushing nozzle and can be opened and closed freely, a shutter flushing section that sprays flushing water to clean the shutter section, and a control section that controls the flushing water supply section and the shutter flushing section, wherein the control section is capable of performing a toilet flush that drains water from the bowl section by having the flushing water supply section supply flushing water to the bowl section, and when the shutter flushing section cleans the shutter section, the shutter flushing section finishes cleaning the shutter section before the toilet flush finishes.

[0007] In the present invention configured in this way, when the shutter cleaning unit is used to clean the shutter, it finishes cleaning the shutter before the toilet flush ends. Therefore, even if dirt or wastewater adhering to the shutter flows into the bowl during the shutter cleaning, it can be drained away during the toilet flush.

[0008] The present invention may further be configured such that, when the shutter cleaning unit cleans the shutter unit, the control unit terminates cleaning of the shutter unit by the shutter cleaning unit before the cleaning water supply unit starts supplying cleaning water to the bowl unit during toilet flushing.

[0009] In the present invention configured in this way, when the shutter cleaning unit cleans the shutter, the cleaning of the shutter by the shutter cleaning unit finishes before the flush water supply unit starts supplying flush water to the bowl during toilet flushing. Therefore, even if dirt or sewage adhering to the shutter flows into the bowl during shutter cleaning, it can be more reliably drained together with the dirt or sewage by the toilet flush.

[0010] The present invention may further comprise a cleaning instruction means for instructing the flushing of the toilet, wherein the control unit, after using the flushing nozzle, causes the shutter section to be cleaned by the shutter cleaning unit, and when an instruction is received from the cleaning instruction means while the shutter section is being cleaned, the control unit starts supplying cleaning water to the bowl section by the cleaning water supply unit so that the toilet flushing ends after the cleaning of the shutter section has ended.

[0011] In the present invention configured in this way, when an instruction is received from the flush instruction means while the shutter section is being flushed, the flush water supply section begins supplying flush water to the bowl section so that the toilet flush ends after the shutter section has finished flushing. Therefore, even if waste or sewage adhering to the shutter section flows into the bowl section when the shutter section is flushed, it can be more reliably drained together with the waste by the toilet flush. [Effects of the Invention]

[0012] According to the toilet device of the present invention, it is possible to prevent waste and sewage adhering to the shutter portion from being left in the bowl portion. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an external perspective view showing a toilet device according to an embodiment of the present invention;

[0014] [Figure 2] 1 is a schematic partial cross-sectional view showing a toilet device according to an embodiment of the present invention;

[0015] [Figure 3] 1 is a block diagram showing the configuration of a main part of a toilet device according to an embodiment of the present invention;

[0016] [Figure 4] 3 is an enlarged cross-sectional view showing a shutter cleaning unit of the toilet apparatus according to one embodiment of the present invention. FIG.

[0017] [Figure 5]FIG. 5 is a front view of FIG. 4 as seen from the direction of arrow A.

[0018] [Figure 6] Cross section AA of Figure 5.

[0019] [Figure 7] Cross section B-B of Figure 5.

[0020] [Figure 8] 4 is a time chart showing the operation of the toilet device according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, a toilet device according to an embodiment of the present invention will be described with reference to the drawings.

[0022] First, the configuration of a toilet device according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is an external perspective view showing a toilet device according to one embodiment of the present invention, and Figure 2 is a schematic partial cross-sectional view of the toilet device according to one embodiment of the present invention as seen from the side. However, the toilet seat and toilet lid are omitted from Figure 2.

[0023] 1 and 2, a toilet device 500 according to one embodiment of the present invention comprises a Western-style seated toilet bowl (hereinafter, for convenience of explanation, simply referred to as the "toilet bowl") 300, a sanitary washing device 100, and an operating unit 200. The sanitary washing device 100 is attached to the top of the toilet bowl 300. The sanitary washing device 100 may be attached integrally to the toilet bowl 300, or may be attached detachably to the toilet bowl 300.

[0024] The sanitary washing device 100 has a casing 10, a toilet seat 80, and a toilet lid 90. The toilet seat 80 and toilet lid 90 are rotatably supported on the casing 10. FIG. 1 shows the toilet seat 80 in a closed state and the toilet lid 90 in an open state. A user can use the toilet device 500 (sanitary washing device 100) by, for example, sitting on the toilet seat 80 in a closed state with their back to the open toilet lid 90. The toilet lid 90 is provided as needed and can be omitted.

[0025] Here, in this specification, "upper" refers to what is above as seen from the perspective of a user sitting on toilet seat 80, and "lower" refers to what is below as seen from the perspective of a user sitting on toilet seat 80. Also, as seen from the perspective of a user sitting on toilet seat 80 with their back to the open toilet lid 90, "forward" refers to what is above, "rear" refers to what is behind, "rear" refers to what is to the right, and "left" refers to what is to the left.

[0026] 1 and 2, the casing 10 has an opening 10a and a shutter section 12. As shown in FIG. 2, the opening 10a is provided at a position opposite the cleaning nozzle 31. The cleaning nozzle 31 is provided in the casing 10 so as to be movable forward and backward through the opening 10a. The shutter section 12 is provided between the bowl section 300a and the cleaning nozzle 31 so as to close the opening 10a when the cleaning nozzle 31 is retracted, that is, when the cleaning nozzle 31 is in a standby state stored in the casing 10.

[0027] The washing nozzle 31 has a water outlet 31a provided at its tip. The washing nozzle 31 discharges washing water supplied from a water supply source WS (described later) from the water outlet 31a to wash the private parts (such as the buttocks) of a user sitting on the toilet seat 80.

[0028] The shutter section 12 is journalled to the casing 10 so as to be rotatable up and down. When the cleaning nozzle 31 is retracted, i.e., in a standby state stored in the casing 10, the shutter section 12 is closed, and when the cleaning nozzle 31 moves forward from the standby state, the shutter section 12 is pushed by the tip of the cleaning nozzle 31 and opens. When the cleaning nozzle 31 moves backward from its advanced state, the shutter section 12 is closed by its own weight. Note that in the present invention, the shutter section is not limited to a configuration in which it opens and closes in accordance with the advancement and retraction of the cleaning nozzle, and may, for example, be opened and closed electrically regardless of the advancement and retraction of the cleaning nozzle.

[0029] The toilet 300 has a bowl-shaped bowl portion 300a formed on the front side of the upper portion of the toilet 300, and a drain trap pipe line 230 that communicates with the bottom of the bowl portion 300a.

[0030] A first water spouting section 240a that spouts supplied flush water forward within bowl section 300a and a second water spouting section 240b that spouts water downward are provided at the top of bowl section 300a. First water spouting section 240a is provided at the rear of bowl section 300a, and second water spouting section 240b is provided behind first water spouting section 240a in bowl section 300a. First water spouting section 240a and second water spouting section 240b function as flush water supply sections that supply flush water to bowl section 300a. The flush water supply section is not limited to this form, and for example, it may further include a third water spouting section, or may be composed of a single water spouting section.

[0031] The drain trap pipe 230 has an ascending pipe 230a that is connected to the bottom of the bowl portion 220 and extends upward, and a descending pipe 230b that is connected to the downstream end of the ascending pipe 230a and extends downward. The lower end of the descending pipe 230b is connected via a drain socket 231 to a drain pipe under the floor (not shown).

[0032] Additionally, drain trap pipe 230, together with bowl portion 300a, forms pooling portion 250. A predetermined amount of flush water is stored in pooling portion 250 after each flush, forming a pooled water surface whose height is determined by the lower surface of the downstream end of ascending pipe 230a (the upstream end of descending pipe 230b).

[0033] The operation unit 200 accepts operation inputs for operating the toilet device 500. In this embodiment, the operation unit 200 is attached to the wall of the toilet room in which the toilet device 500 is installed. In this embodiment, the operation unit 200 is a remote control provided separately from the sanitary washing device 100. The operation unit 200 may also be provided integrally with the sanitary washing device 100.

[0034] Furthermore, when the user operates the operating unit 200, flush water is discharged from the first water discharger 240a onto the inner surface of the bowl section 300a, forming a swirling flow within the bowl section 220. Furthermore, flush water flows downward from the second water discharger 240b. The swirling flow flows down into the water reservoir 250, agitating the accumulated water, which is then discharged together with waste via the drain trap pipe 230 into the drain pipe. Note that, in the present invention, "waste" includes not only excrement by the user but also solid matter such as toilet paper.

[0035] In this embodiment, toilet flushing is a series of actions that supply flush water from first water discharger 240a and second water discharger 240b to bowl portion 300a, and then drain the water from bowl portion 300a to the outside. In other words, operating unit 200 functions as a flush instruction means that instructs toilet flushing. Note that toilet flushing in the present invention may be performed by a wash-down method in which waste is discharged using the force of flush water falling down, or by a so-called siphon method in which waste is discharged by siphon action.

[0036] Figure 3 is a block diagram showing the configuration of the main parts of a toilet device according to one embodiment of the present invention. As shown in Figure 3, the toilet device 500 has a private parts cleansing unit 30, a control unit 50, a human body detection sensor 60, and a seating detection sensor 70. Note that Figure 3 also shows the configuration of the main parts of the water channel system and the main parts of the electrical system of the toilet device 500.

[0037] The local washing unit 30 washes the user's local areas by discharging wash water toward the user's local areas. The local washing unit 30 has a washing nozzle 31, a local washing solenoid valve 32, a wash water heater 33, a first flow path switching unit 35, a nozzle motor 36, a first nozzle washing unit 37a, a second nozzle washing unit 37b, a shutter washing unit 38, a second flow rate switching unit 39, a second flow path switching unit 40, a third flow path switching unit 41, and a fourth flow path switching unit 42.

[0038] The cleaning nozzle 31 has a water outlet 31a provided at its tip. The cleaning nozzle 31 discharges cleaning water supplied from the water supply source WS from the water outlet 31a to clean the private parts (such as the buttocks) of a user sitting on the toilet seat 80. The number of water outlets 31a provided may be one or more. The cleaning nozzle 31 may be provided with, for example, a buttocks cleaning water outlet for cleaning the user's buttocks and a bidet cleaning water outlet for cleaning the user's female private parts as the water outlets 31a.

[0039] The private parts washing unit 30 has a flow path 30a that guides water supplied from a water supply source WS, such as a tap or a water tank, to the washing nozzle 31, the first nozzle washing section 37a, the second nozzle washing section 37b, and the shutter washing section 38. The flow path 30a connects the water supply source WS to the washing nozzle 31. The flow path 30a also connects the water supply source WS to the first nozzle washing section 37a, the second nozzle washing section 37b, and the shutter washing section 38.

[0040] A local cleaning solenoid valve 32 is provided upstream of the flow path 30a. The local cleaning solenoid valve 32 is an openable and closable solenoid valve. The local cleaning solenoid valve 32 is electrically connected to the control unit 50. The local cleaning solenoid valve 32 opens and closes the flow path 30a, for example, based on a command from the control unit 50. In other words, the local cleaning solenoid valve 32 switches between starting and stopping the supply of water from the water supply source WS to the cleaning nozzle 31, the first nozzle cleaning unit 37a, the second nozzle cleaning unit 37b, and the shutter cleaning unit 38, based on a command from the control unit 50.

[0041] A first flow path switching unit 35 that switches the water supply destination is provided downstream of the local cleaning solenoid valve 32. The first flow path switching unit 35 switches the water supply destination (the connection destination of the flow path 30a) to one of the cleaning water heating unit 33, the second nozzle cleaning unit 37b, and the shutter cleaning unit 38. The first flow path switching unit 35 has, for example, a valve. The first flow path switching unit 35 is electrically connected to the control unit 50. The first flow path switching unit 35 switches the water supply destination to one of the cleaning water heating unit 33, the second nozzle cleaning unit 37b, and the shutter cleaning unit 38, for example, by changing the open / close state of the valve based on a command from the control unit 50.

[0042] A flush water heating section 33 is provided downstream of the first flow path switching section 35. The flush water heating section 33 is an instantaneous heating type (instantaneous type) heat exchanger that uses a ceramic heater. The flush water heating section 33 is electrically connected to the control section 50. The flush water heating section 33 switches between starting and stopping heating by the heater, for example, based on a command from the control section 50. In this way, the flush water heating section 33 heats the water supplied from the water supply source WS to a specified temperature. Also, in the present invention, the flush water heating section may be, for example, a hot water storage heating type heat exchanger that uses a hot water storage tank.

[0043] A second flow rate switching section 39 that adjusts the flow rate and a second flow path switching section 40 that switches the water supply destination are provided downstream of the cleaning water heating section 33. The second flow rate switching section 39 and the second flow path switching section 40 may be provided as a single unit.

[0044] The second flow rate switching unit 39 adjusts the flow rate of water discharged from the cleaning nozzle 31 and the first nozzle cleaning unit 37a. The second flow rate switching unit 39 has, for example, a valve. The second flow rate switching unit 39 is electrically connected to the control unit 50. The second flow rate switching unit 39 adjusts the flow rate of water discharged from the cleaning nozzle 31 and the first nozzle cleaning unit 37a by changing the open / close state of the valve based on, for example, a command from the control unit 50.

[0045] The second flow path switching unit 40 switches the water supply destination (the connection destination of the flow path 30a) between the cleaning nozzle 31 and the first nozzle cleaning unit 37a. The second flow path switching unit 40 has, for example, a valve. The second flow path switching unit 40 is electrically connected to the control unit 50. The second flow path switching unit 40 switches the water supply destination between the cleaning nozzle 31 and the first nozzle cleaning unit 37a by changing the open / close state of the valve, for example, based on a command from the control unit 50.

[0046] A cleaning nozzle 31 is provided downstream of the second flow rate switching unit 39 and the second flow path switching unit 40. The cleaning nozzle 31 receives driving force from a nozzle motor 36 and can advance into the bowl portion 300a of the toilet 300 or retreat into the interior of the casing 10. The nozzle motor 36 is electrically connected to the control unit 50. The nozzle motor 36 advances and retreats the cleaning nozzle 31 based on commands from the control unit 50.

[0047] Furthermore, a first nozzle cleaning section 37a is provided downstream of the second flow rate switching section 39 and the second flow path switching section 40. The first nozzle cleaning section 37a is provided above the cleaning nozzle 31 inside the casing 10, and can clean the surface (particularly the upper surface) of the cleaning nozzle 31 by discharging cleaning water from a water discharge hole (not shown) when the cleaning nozzle 31 is in an advanced state. The first nozzle cleaning section 37a may also clean the water discharge port 31a of the cleaning nozzle 31 and other parts by discharging cleaning water from a water discharge hole (not shown) when the cleaning nozzle 31 is stored (retracted).

[0048] Furthermore, a sterilization device 43 that generates sterilized water is provided between the second flow rate switching unit 39, the second flow path switching unit 40, and the first nozzle cleaning unit 37a. In this embodiment, the sterilization device 43 supplies silver ions to the cleaning water. Note that the sterilization device is not limited to one that supplies silver ions to the cleaning water, and may, for example, electrolyze tap water to generate sterilized water containing hypochlorous acid. Furthermore, for example, the sterilized water may be a solution containing metal ions such as copper ions, a solution containing electrolytic chlorine or ozone, acidic water, alkaline water, or the like.

[0049] A second nozzle cleaning section 37b is provided downstream of the first flow path switching section 35. The second nozzle cleaning section 37b is provided below the cleaning nozzle 31 inside the casing 10, and can clean the underside of the cleaning nozzle 31 by discharging cleaning water from a water discharge hole (not shown) when the cleaning nozzle 31 is in an advanced state. The second nozzle cleaning section 37b may also clean the cleaning nozzle 31 by discharging cleaning water from a water discharge hole (not shown) when the cleaning nozzle 31 is stored (retracted).

[0050] A third flow rate switching unit 41 is provided between the first flow path switching unit 35 and the second nozzle cleaning unit 37b. The third flow rate switching unit 41 adjusts the flow rate of water discharged from the second nozzle cleaning unit 37b. The third flow rate switching unit 41 has, for example, a valve. The third flow rate switching unit 41 is electrically connected to the control unit 50. The third flow rate switching unit 41 adjusts the flow rate of water discharged from the second nozzle cleaning unit 37b by changing the open / close state of the valve, for example, based on a command from the control unit 50.

[0051] A shutter cleaning unit 38 is provided downstream of the first flow path switching unit 35. The shutter cleaning unit 38, the details of which will be described later, cleans the shutter unit 12 by ejecting cleaning water onto the shutter unit 12.

[0052] In addition, a fourth flow rate switching unit 42 is provided between the first flow path switching unit 35 and the shutter cleaning unit 38. The fourth flow rate switching unit 42 adjusts the flow rate of water discharged from the second nozzle cleaning unit 37b. The fourth flow rate switching unit 42 has, for example, a valve. The fourth flow rate switching unit 42 is electrically connected to the control unit 50. The fourth flow rate switching unit 42 adjusts the flow rate of water discharged from the shutter cleaning unit 38 by changing the open / close state of the valve, for example, based on a command from the control unit 50.

[0053] The first flow path switching unit, the third flow rate switching unit 41, and the fourth flow rate switching unit 42 may be provided as a single unit.

[0054] The human body detection sensor 60 detects a user. The human body detection sensor 60 detects, for example, a user's entry into and exit from the toilet room. The human body detection sensor 60 can be, for example, an infrared sensor, a radio wave sensor, or an electrostatic sensor. The human body detection sensor 60 is electrically connected to the control unit 50. The human body detection sensor 60 outputs the detection result to the control unit 50. In this embodiment, the human body detection sensor 60 is provided in the sanitary washing device 100. The human body detection sensor may be provided in the operation unit, or may be provided separately from the sanitary washing device and the operation unit.

[0055] The seating detection sensor 70 can detect whether a user is seated on the toilet seat 80. The seating detection sensor 70 detects whether a user is sitting or leaving the seat. The seating detection sensor 70 can be, for example, a microwave sensor, a distance sensor (infrared projector sensor), an ultrasonic sensor, a tact switch, a capacitance switch (touch sensor), or a distortion sensor. The seating detection sensor 70 outputs the detection result to the control unit 50.

[0056] 3, the toilet apparatus 500 further includes a first toilet flush valve 220a and a second toilet flush valve 220b. The first toilet flush valve 220a and the second toilet flush valve 220b start and stop the water supply from the water supply source WS to the first water discharger 240a and the second water discharger 240b based on a command from the control unit 50. The first toilet flush valve 220a and the second toilet flush valve 220b are electromagnetic valves that can be opened and closed. The first toilet flush valve 220a and the second toilet flush valve 220b are electrically connected to the control unit 50. The first toilet flush valve 220a and the second toilet flush valve 220b open and close the flow path based on a command from the control unit 50, for example.

[0057] The control unit 50 is supplied with power from a power supply (not shown) and controls the operation of the private parts washing unit 30, the first toilet flush valve 220a, the second toilet flush valve 220b, etc. based on signals (operation inputs) from the operation unit 200, etc.

[0058] The control unit 50 controls the local cleaning by the local cleaning unit 30, for example, based on an operation input on the operation unit 200. More specifically, the control unit 50 controls the start and stop of the discharge of cleaning water from the cleaning nozzle 31 and the nozzle cleaning chamber 37 by controlling the solenoid valve 32 and the flow path switching unit 35, for example, based on the operation input on the operation unit 200. The control unit 50 controls the flow rate of water discharged from the cleaning nozzle 31 by controlling the flow rate switching unit 34, for example, based on the operation input on the operation unit 200. The control unit 50 controls the temperature of cleaning water discharged from the cleaning nozzle 31 by controlling the cleaning water heating unit 33, for example, based on the operation input on the operation unit 200. The control unit 50 controls the advance and retreat of the cleaning nozzle 31 by controlling the nozzle motor 36, for example, based on the operation input on the operation unit 200.

[0059] 4 is an enlarged cross-sectional view showing the shutter portion of a toilet device according to one embodiment of the present invention, FIG. 5 is a front view of FIG. 4 as seen from the direction of arrow A, FIG. 6 is a cross-sectional view taken along line AA in FIG. 5, and FIG. 7 is a cross-sectional view taken along line BB in FIG.

[0060] The shutter cleaning unit 38 will be described with reference to FIGS.

[0061] 4 to 7, the shutter cleaning unit 38 is disposed above the shutter unit 12. The shutter cleaning unit 38 discharges cleaning water downward toward the shutter unit 12 when the shutter unit 12 closes the opening 10, that is, when the cleaning nozzle 31 is in a standby state with the shutter unit 12 retracted into the casing 10. The flow rate of cleaning water discharged from the shutter cleaning unit 38 to the shutter unit 12 is less than the flow rate of cleaning water discharged from the water discharge port 31a of the cleaning nozzle 31.

[0062] As shown in FIGS. 4 to 7, the shutter cleaning section 38 has an internal flow path 38a, a front cleaning water-spouting section 38b, and a rear cleaning water-spouting section 38c.

[0063] The internal flow path 38a is a flow path that extends in the left-right direction, and flush water supplied from the water supply source WS flows into it. The front flush water discharger 38b is a hole formed on the front side of the lower surface of the internal flow path 38a, and discharges the flush water that flows into the internal flow path 38a onto the front surface 12a of the shutter section 12. The rear flush water discharger 38c is a hole formed on the rear side of the lower surface of the internal flow path 38a, and discharges the flush water that flows into the internal flow path 38a onto the rear surface 12b of the shutter section 12. Multiple front flush water dischargers 38b and multiple rear flush water dischargers 38c may be formed.

[0064] Furthermore, the flow rate of flush water discharged from the front flush water discharger 38b onto the front surface 12a of the shutter section 12 is greater than the flow rate of flush water discharged from the rear flush water discharger 38c onto the rear surface 12b of the shutter section 12. The flow rate of flush water discharged from the front flush water discharger 38b may be greater than the flow rate of flush water discharged from the rear flush water discharger 38c by making the number and diameter of the front flush water dischargers 38b greater than those of the rear flush water dischargers 38c, or by forming a taper or protrusion inside the internal flow path 38a to make the flow rate of flush water reaching the front flush water dischargers 38b greater than the flow rate of flush water reaching the rear flush water discharger 38c.

[0065] A drain hole 10c is formed in the bottom 10b of the casing 10. The drain hole 10c is located rearward of the lower end of the shutter section 12 when it is closed, and the second water discharge section 240b is located below the drain hole 10c. Therefore, when flushing water is discharged from the shutter cleaning section 38 to the shutter section 12, the flushing water, particularly after cleaning the rear surface 12b of the shutter section 12, is drained into the second water discharge section 240b via the drain hole 10c, and after cleaning the surface of the second water discharge section 240b, flows down into the bowl section 300a. Furthermore, when flushing water is discharged from the shutter cleaning section 38 to the shutter section 12, the flushing water, particularly after cleaning the front surface 12a of the shutter section 12, flows directly down into the bowl section 300a.

[0066] Next, the operation of the toilet device 500 according to one embodiment of the present invention will be described with reference to Fig. 8. Fig. 8 is a time chart showing the operation of the toilet device according to one embodiment of the present invention.

[0067] 8, when a user enters the toilet room at time t1, the human body detection sensor 60 detects the user. Then, when the user sits on the toilet seat 80 at time t2, the seating detection sensor 70 detects that the user is sitting.

[0068] At time t3, the user operates the operating unit 200 to instruct the start of local cleaning using the cleaning nozzle 31, and the control unit 50 drives the nozzle motor 36 to advance the cleaning nozzle 31. While the cleaning nozzle 31 is advanced, the control unit 50 opens the local cleaning solenoid valve 32, directs the water supply destination of the first flow path switching unit 35 to the second flow rate switching unit 39 and the second flow path switching unit 40, directs the water supply destination of the second flow path switching unit 40 to the first nozzle cleaning unit 37a, and discharges cleaning water from the first nozzle cleaning unit 37a to clean the surface of the cleaning nozzle 31.

[0069] When the washing nozzle 31 advances to the washing position at time t4, the control unit 50 directs the second flow path switching unit 40 to supply water to the washing nozzle 31, and discharges washing water from the water discharge port 31a.

[0070] At time t5, when the user operates the operating unit 200 to instruct the end of local cleaning by the cleaning nozzle 31, the control unit 50 closes the local cleaning solenoid valve 32 and drives the nozzle motor 36 to retract the cleaning nozzle 31. While the cleaning nozzle 31 is retracting, the first flow path switching unit 35 supplies water to the third flow rate switching unit 41, the second flow rate switching unit 39, and the second flow path switching unit 40, and the second flow path switching unit 40 supplies water to the first nozzle cleaning unit 37a, and cleaning water is discharged from the first nozzle cleaning unit 37a and the second cleaning nozzle cleaning unit 37b to clean the surface of the cleaning nozzle 31.

[0071] When the cleaning nozzle 31 retracts to the stored position at time t6, the control unit 50 directs the second flow path switching unit 40 to supply water to the cleaning nozzle 31, and flushing water is discharged from the water outlet 31a. The cleaning water is discharged from the water outlet 31a inside the casing 10 to clean the cleaning nozzle 31. After cleaning the cleaning nozzle 31, some of the cleaning water flows down from the drain hole 10c to the second water discharger 240b, cleans the surface of the second water discharger 240b, and then flows down into the bowl unit 300a.

[0072] At time t7, the control unit 50 changes the water supply destination of the first flow path switching unit 35 to the fourth flow rate switching unit 42, supplies cleaning water to the shutter cleaning unit 38, and starts cleaning the shutter unit 12 by the shutter cleaning unit 38. Cleaning water is discharged from the front cleaning water discharger 38b and the rear cleaning water discharger 38c of the shutter cleaning unit 38, and the front surface 12a and rear surface 12b of the shutter unit 12 are cleaned.

[0073] At time t8, when a predetermined time T1 has elapsed since the shutter cleaning unit 38 started cleaning the shutter unit 12, the control unit 50 closes the local cleaning solenoid valve 32, and the shutter cleaning unit 38 ends cleaning of the shutter unit 12. After cleaning the shutter unit 12, a portion of the cleaning water discharged by the shutter cleaning unit 38 onto the shutter unit 12 flows down from the drain hole 10c to the second water discharger 240b. After cleaning the surface of the second water discharger 240b, the cleaning water that flows down to the second water discharger 240b flows down into the bowl unit 300a together with any dirt or wastewater adhering to the shutter unit 12 and the second water discharger 240b. Furthermore, after cleaning the shutter unit 12, another portion of the cleaning water discharged by the shutter cleaning unit 38 onto the shutter unit 12 flows directly down into the bowl unit 300a together with any dirt or wastewater adhering to the shutter unit 12.

[0074] Furthermore, at time t8, the control unit 50 drives the nozzle motor 36 to advance the cleaning nozzle 33 and opens the shutter unit 12.

[0075] When the user leaves the toilet seat 80 at time t9, the seating detection sensor 70 detects that the user has left the seat.

[0076] When the user operates operating unit 200 at time t10 to instruct toilet flushing, control unit 50 opens first toilet flush valve 220a and second toilet flush valve 220b, and flush water is discharged from first water discharge unit 240a and second water discharge unit 240b toward bowl unit 300a, commencing toilet flushing. The inside of bowl unit 300a is cleaned with flush water supplied from first water discharge unit 240a and second water discharge unit 240b, and the water, together with any waste or sewage adhering to shutter unit 12 and second water discharge unit 240b, passes through drain trap pipe 220 and is drained into a drain pipe (not shown).

[0077] When a predetermined time T2 has passed since the start of toilet flushing at time t11, the toilet flushing ends. Also, before the predetermined time T2 has passed, the control unit 60 drives the nozzle motor 36 to move the cleaning nozzle 33 back, closes the shutter unit 12, and moves the cleaning nozzle 33 to the stored position.

[0078] When the user leaves the toilet room at time t12, the human body detection sensor 60 detects the user's departure.

[0079] Furthermore, if the shutter cleaning unit 38 starts cleaning the shutter unit 12 at time t7 and the user operates the operating unit 200 to instruct toilet cleaning before the predetermined time T1 has elapsed, the first water discharge unit 240a and the second water discharge unit 240b will start supplying cleaning water to the bowl unit 300a so that the toilet cleaning will end after the cleaning of the shutter unit 12 has ended.

[0080] For example, the control unit 50 may wait for a predetermined time T1 to elapse after starting flushing the shutter unit 12, and then start the supply of flush water to the bowl unit 300a by the first water spouting unit 240a and the second water spouting unit 240b, thereby ending the toilet flush after finishing flushing the shutter unit 12. Alternatively, for example, the control unit 50 may start the supply of flush water to the bowl unit 300a by the first water spouting unit 240a and the second water spouting unit 240b after or simultaneously with starting flushing of the shutter unit 12, then finish flushing the shutter unit 12, and end the supply of flush water to the bowl unit 300a after finishing flushing the shutter unit 12, thereby ending the toilet flush after finishing flushing the shutter unit 12. In other words, in this case, the predetermined time T1, which is the time it takes for the shutter flushing unit 38 to flush the shutter unit 12, is shorter than the predetermined time T2, which is the toilet flush time.

[0081] In this embodiment, the user commands the toilet to be flushed by operating the operating unit 200, but the present invention is not limited to this form. For example, the toilet may be commanded to be flushed by the human body detection sensor 60 indicating that the user has left the room, or by the seat detection sensor indicating that the user has left the seat.

[0082] According to the toilet apparatus 500 of the embodiment of the present invention described above, when the shutter cleaning unit 38 cleans the shutter unit 12, the cleaning of the shutter unit 12 by the shutter cleaning unit 38 ends before the toilet flush ends. Therefore, even if the cleaning of the shutter unit 12 causes waste and sewage adhering to the shutter unit 12 to flow into the bowl unit 300a, the waste and sewage can be drained together by the toilet flush.

[0083] Furthermore, according to the toilet apparatus 500 of the embodiment of the present invention described above, when the shutter flushing unit 38 flushes the shutter unit 12, the flushing of the shutter unit 12 by the shutter flushing unit 38 ends before the first water discharger 240a and the second water discharger 240b start supplying flush water to the bowl unit during toilet flushing. Therefore, even if the flushing of the shutter unit 12 causes dirt and wastewater adhering to the shutter unit 12 to flow into the bowl unit 300a, these can be more reliably drained together by the toilet flush.

[0084] Furthermore, according to the toilet apparatus 500 according to one embodiment of the present invention described above, when the control unit 50 receives a command to flush the toilet while the shutter unit 12 is being flushed, the control unit 50 starts supplying flush water to the bowl unit 300a via the first water discharge unit 240a and the second water discharge unit 240b so that the toilet flushing ends after the flushing of the shutter unit 12 has finished. Therefore, even if the flushing of the shutter unit 12 causes waste or sewage adhering to the shutter unit 12 to flow into the bowl unit 300a, this can be more reliably drained together with the waste or sewage by the toilet flush.

[0085] Furthermore, according to the toilet apparatus 500 according to one embodiment of the present invention described above, when the flushing nozzle 31 is in the stored position and flushed with flush water discharged from the water discharge port 31a, and when the shutter section 12 is washed by the shutter washing section 38, the surface of the second water discharger 240b can be washed with flush water flowing down from the drain hole 10c. Therefore, even if the flush water discharged from the first water discharger 240a does not pass over the surface of the second water discharger 240b or the flow rate at which it passes is relatively low, the second water discharger 240b can be washed.

[0086] Furthermore, in the embodiment described above, after the shutter cleaning unit 38 has finished cleaning the shutter unit 12, for example, before the toilet flush starts, the control unit 50 drives the nozzle motor 36 to advance the cleaning nozzle 33 and open the shutter unit 12. In this case, even if water remains between the shutter unit 12 and the casing 10, the movement of the cleaning nozzle 33 and the shutter unit 12 will move the remaining water, allowing it to flow directly into the bowl unit 300a with or without passing through the drain hole 10c.

[0087] The flow rate of wash water discharged from the shutter washing unit 38 to the shutter unit 12 is less than the flow rate of wash water discharged from the water outlet 31a of the wash nozzle 31. Therefore, if the first flow path switching unit 35 is located downstream of the wash water heating unit 33 and a command is given to wash local areas with the wash nozzle 31 while the shutter washing unit 38 is washing the shutter unit 12, there is a concern that it may take some time for the wash water heating unit 33 to heat the wash water to the set temperature.

[0088] On the other hand, according to the toilet device 500 of one embodiment of the present invention described above, the first flow path switching section 35 is arranged upstream of the flushing water heating section 33, so that even if local cleaning is instructed using the cleaning nozzle 31 while the shutter section 12 is being cleaned by the shutter cleaning section 38, the flushing water can be heated by the flushing water heating section 33 in a relatively short time.

[0089] Furthermore, according to the toilet apparatus 500 according to one embodiment of the present invention described above, the flow rate of flush water discharged from the front flushing water discharger 38b onto the front surface 12a of the shutter section 12 is greater than the flow rate of flush water discharged from the rear flushing water discharger 38c onto the rear surface 12b of the shutter section 12. Therefore, the front surface 12a of the shutter section 12, which is more susceptible to dirt adhesion than the rear surface 12b, can be more reliably cleaned.

[0090] Furthermore, in the embodiment described above, when the user operates the operating unit 200 to instruct the end of local washing by the washing nozzle 31, it is determined that the washing nozzle 33 has been used, and as the washing nozzle 31 retracts to the storage position, the first nozzle washing unit 37a, the second nozzle washing unit 37b, the water outlet 31a, and the shutter washing unit 38 automatically wash the washing nozzle 31, and the shutter washing unit 38 automatically washes the shutter unit 12. The present invention is not limited to this configuration, and for example, when the human body detection sensor 60 detects that the user has left the toilet room, or when the seating detection sensor 70 detects that the user has left the toilet seat 80, it may be determined that the washing nozzle 33 has been used, and the shutter washing unit 38 may automatically wash the shutter unit 12. Also, for example, washing of the shutter unit 12 by the shutter washing unit 38 may not be automatically performed, and when a toilet bowl flush is instructed by the user, the shutter washing unit 38 may start washing the shutter unit 12 before or simultaneously with the toilet bowl flush.

[0091] Furthermore, in the embodiment described above, the flow rate of flush water discharged from the front flush water discharger 38b to the front surface 12a of the shutter unit 12 is greater than the flow rate of flush water discharged from the rear flush water discharger 38c to the rear surface 12b of the shutter unit 12. The present invention is not limited to this configuration. For example, the flow rate of flush water discharged from the front flush water discharger 38b to the front surface 12a of the shutter unit 12 may be smaller than the flow rate of flush water discharged from the rear flush water discharger 38c to the rear surface 12b of the shutter unit 12. The flow rate may also be increased over time until it reaches a predetermined flow rate. In this case, the rear surface 12b can be more reliably cleaned within the casing 10, where there is less risk of flush water splashing on the user than on the front surface 12a. Furthermore, splashing of flush water due to the impact of flush water on the shutter unit 12 is greatest at the initial impact when flush water discharge begins. However, this effect can be suppressed by increasing the flow rate of flush water discharged to the rear surface 12b greater than the flow rate of flush water discharged to the front surface 12a.

[0092] Furthermore, the present invention is not limited to the above-described embodiment. For example, the cleaning nozzle is not limited to a nozzle for cleaning the user's private parts, but may be any cleaning nozzle that can be moved forward and backward, such as a nozzle for cleaning the inside of the bowl. Furthermore, for example, the first flow path switching unit may be located downstream of the cleaning water heating unit, in which case the first flow path switching unit may also serve as the second flow path switching unit. [Explanation of symbols]

[0093] 10 Casing 10a opening 10b bottom 10c drainage hole 12 Shutter section 12a front 12b Rear 30 Private parts washing unit 31 Cleaning nozzle 31a Outlet 32 Local cleaning solenoid valve 33 Cleaning water heating section 35 First flow path switching section 36 nozzle motor 37a First nozzle cleaning section 37b Second nozzle cleaning section 38 Shutter Cleaning Section 38a Internal flow path 38b Front flushing water outlet 38c Rear cleaning water spout 39 Second flow rate switching section 40 Second flow path switching section 41 Third flow rate switching section 42 Fourth flow rate switching section 43 Sterilization device 50 control section 60 Human body detection sensor 70 Seating detection sensor 80 toilet seats 90 Toilet lid 100 Sanitary cleaning device 200 Operation section 220a First toilet flush valve 220b Second toilet flush valve 230 Drain trap pipe 230a Ascending Pipe 230b downhill pipe 231 Drainage socket 240a First outlet 240b Second outlet 250 Reservoir 300 toilet 300a Bowl 500 Toilet Equipment WS water source

Claims

1. A bowl portion and a cleaning water supply unit that supplies cleaning water to the bowl unit; a cleaning nozzle provided so as to be movable forward and backward; a shutter portion that is provided between the bowl portion and the cleaning nozzle and that can be opened and closed; a shutter cleaning unit that discharges cleaning water to clean the shutter unit; a control unit that controls the cleaning water supply unit and the shutter cleaning unit, The control unit The flush water supply unit supplies flush water to the bowl portion, thereby enabling toilet flushing to be performed by draining water from the bowl portion, A toilet device in which, when cleaning the shutter section using the shutter cleaning section, the cleaning of the shutter section by the shutter cleaning section is completed before the supply of cleaning water to the bowl section by the cleaning water supply section during the toilet flush begins.

2. 2. The toilet device of claim 1, wherein when the shutter cleaning unit is cleaning the shutter unit, the control unit ends cleaning of the shutter unit by the shutter cleaning unit before the flush water supply unit starts supplying flush water to the bowl unit during the toilet flush.

3. Further, a flush instruction means for instructing the toilet to be flushed is provided, 3. The toilet device of claim 1, wherein after using the cleaning nozzle, the control unit causes the shutter cleaning unit to clean the shutter unit, and when an instruction is received from the cleaning instruction means during this cleaning of the shutter unit, the control unit starts supplying cleaning water to the bowl unit by the cleaning water supply unit so that the toilet cleaning ends after the cleaning of the shutter unit has ended.

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