JP4552233B2 - Flush toilet - Google Patents

Description

  The present invention relates to a flush toilet that performs a toilet lid closing operation and a toilet flushing operation.

In recent years, toilets using a cleaning method that directly uses tap water have been proposed. In this type of toilet, cleaning is performed by controlling the discharge timing of the rim water discharged from above the bowl portion and the jet water discharged below. For example, when a cleaning signal is received, rim water discharge is started first, and the dirt adhering to the bowl portion is washed down to the lower part of the bowl portion. As a result, a siphon phenomenon is generated, and the washing water is discharged together with the filth collected at the bottom of the bowl portion. Lastly, the rim water is discharged again to collect water in the bowl portion and perform sealing. Although such a series of cleaning operations is performed, there is a problem that the cleaning sound for discharging the jet cleaning water is particularly worrisome because the cleaning water having a high flow rate using the pressure of tap water is used.
Also, in the so-called siphon toilet, which generates a siphon phenomenon by filling the drain trap pipe only with the rim water discharged from the upper part of the bowl part, an abnormal noise `` Boc, Boko '' is generated at the time when the siphon phenomenon occurs. There was a similar problem that the cleaning sound was annoying.

As a method for suppressing such a washing sound, there is a proposal for washing with the toilet lid closed as a relatively simple method. For example, Japanese Patent Application Laid-Open No. 51-57942 describes that after detecting that the user leaves the toilet, the toilet seat / toilet lid is closed and a washing operation is performed according to a signal when the user closes. Japanese Patent Application Laid-Open No. 7-158142 describes that the human body detection sensor detects that the user has left the toilet, and the cleaning sound is reduced by washing after closing the toilet lid.
JP-A 51-57942 JP 7-158142 A

Each of the above prior arts discharges the wash water stored in the tank by opening the drain valve in the tank, but performs the toilet flushing operation after closing the toilet lid. (See FIG. 20).
However, the user is concerned about whether or not toilet bowl cleaning has been performed. However, in the above-described prior art, when the toilet lid is closed, it is difficult to hear a relatively low sound of the rim cleaning sound at the start of toilet cleaning, so that the user feels uneasy about whether toilet cleaning has been performed. This problem occurs not only in a flush toilet that performs toilet flushing with flush water stored in the tank, but also in flush toilets in which tap water is flushed directly to the toilet without being stored in the tank.

  In view of this, the present invention allows the user to recognize that the automatic toilet flushing is performed by causing the rim washing sound to resonate outside the toilet, and to reduce the toilet flushing sound by suppressing the sound before and after the occurrence of the siphon phenomenon. The purpose is to provide a toilet.

  In order to achieve the above object, the present invention provides a toilet bowl for generating a siphon phenomenon in a drain trap when drainage water is supplied to discharge the accumulated water in the bowl part, and a toilet lid covering the bowl part, An electric switchgear for performing a toilet lid closing operation for closing the toilet lid from an open state, a water supply device for supplying the flush water to the toilet, and an operation command for the electric switchgear and the water supply device In the flush toilet provided with the controller, the controller supplies cleaning water from the water supply device before the toilet lid closing operation by the electric opening and closing device is completed, and starts the toilet flushing operation. Control is performed so that the toilet lid closing operation of the electric switchgear is completed earlier than the apparatus supplies cleaning water to the toilet and generates the siphon phenomenon.

In this, the toilet supplies the cleaning water to the rim spout and the jet spout of the bowl portion to perform toilet flushing, and the water supply device includes rim water supply means for supplying cleaning water to the rim, Jet water supply means for supplying cleaning water to the jet water spouting port, and the control unit includes the rim water supply means and the jet water supply means so as to supply water in the order of the rim water discharge port and the jet water discharge port of the bowl part. In addition, the water supply to the jet spout can be performed after the electric switchgear has completed the toilet lid closing operation.
Here, in water supply to the jet water outlet, water supply to the rim water outlet may be stopped, or water may be supplied to the rim water outlet simultaneously with water supply to the jet water outlet.

Further, the controller starts water supply to the rim spout by the rim water supply means before the electric opening and closing device completes the toilet lid closing operation, and after the electric opening and closing device completes the toilet lid closing operation, Water can be supplied to the jet water outlet by the jet water supply means.
Also in this case, the water supply to the rim water discharge port may be executed in the water supply to the jet water discharge port.

  Furthermore, a remote control having a toilet flushing switch for performing the toilet flushing is provided, and the toilet lid closing operation is started by the toilet lid electric opening and closing device by operating the toilet flushing switch, and then the toilet flushing is performed. The operation may be started.

  The control unit starts the toilet flushing operation by operating the water supply device a predetermined time after the toilet lid closing operation is started, and before the siphon phenomenon occurs in the drain trap pipe, the toilet lid closing operation To complete.

  The control unit performs the toilet flushing by operating the water supply device after a time difference from the start of the toilet lid closing operation, and the toilet does not start the toilet flushing operation, which can be performed in the time difference period A washing stop means was provided.

  In order to achieve the above object, the present invention provides a toilet that generates siphon phenomenon in a drain trap pipe when flush water is supplied and discharges accumulated water in the bowl part, and a toilet that covers the bowl part. A lid, an electric opening and closing device that operates the toilet lid from an open state to a closed state, a water supply device that supplies cleaning water to the toilet, a human body detection unit that detects a human body, and a human body by the human body detection unit In a flush toilet provided with a control unit that gives an operation command to the electric switchgear and water supply device based on the disappearance of the detection signal, the control unit defines an operation command to be transmitted when the human body detection signal disappears A plurality of automatic toilet flushing modes are provided, and the plurality of automatic toilet flushing modes are configured to supply toilet water to the toilet with the water supply device and complete toilet flushing, and then the toilet lid is closed by the electric opening and closing device. A first automatic toilet flushing mode that is controlled so as to start execution of the toilet, and before the toilet lid closing operation is completed by the electric opening and closing device, flush water is supplied from the water supply device to start the toilet flushing operation. And a second automatic toilet flushing mode that is controlled so as to complete the toilet lid closing operation of the electric opening and closing device earlier than supplying flush water to the toilet by the water supply device and generating the siphon phenomenon, and And a selection means for selecting any one mode from the plurality of automatic toilet flushing modes.

  According to the present invention, the toilet lid closing operation and the toilet flushing operation are controlled in association with each other so that the toilet lid is not closed completely in the initial stage of toilet flushing, but is closed in the later stage of toilet flushing. The rim washing sound is made to resonate outside the toilet to make the user aware that automatic toilet flushing is being performed, and the propagation of the sound before and after the occurrence of the siphon phenomenon is suppressed to reduce the toilet flushing sound. A flush toilet can be provided.

  Next, an embodiment of the present invention will be described with reference to the drawings.

First, the first embodiment of the flush toilet of the present invention will be described with reference to FIGS.
1 is a side view of the flush toilet, FIG. 2 is a plan view of the flush toilet, FIG. 3 is a block diagram illustrating a water supply system of the flush toilet, and FIG. FIG. 5 is a time chart showing the relationship between the toilet lid closing operation and the toilet flushing operation during toilet flushing by the remote controller of the flush toilet.

  As shown in FIGS. 1 and 2, a flush toilet 1 includes a toilet body 2, a toilet seat 4 disposed on the upper surface of the toilet body 2, a toilet lid 6 disposed so as to cover the toilet seat 4, An electric opening and closing device 7 that opens and closes the lid, a local cleaning device 8 that is disposed at the upper rear of the toilet body 2, and a human body detecting means 9 that detects a human body are provided. In the present embodiment, as the human body detection means 9, either a human body detection sensor that detects the presence or absence of a human body standing in front of the toilet body 2 or a seating sensor that detects the presence or absence of a person seated on the toilet seat 4 is used. it can. Further, a water supply device 10 for supplying cleaning water to the toilet body 2 and a control unit 62 are disposed behind the toilet body 2, and the water supply device 10 is covered with a side panel 10a. In addition, the control unit 62 receives or transmits a control signal with the electric switchgear 7, the local cleaning device 8, the human body detection means 9, the water supply device 10, and the remote controller 11 having the toilet cleaning switch.

  The toilet body 2 is formed with a bowl portion 12 for receiving filth, a drain trap pipe 14 extending from the bottom of the bowl portion 12, a jet spout 16 for jet spout, and a rim spout 18 for rim spout. ing.

  The jet spout 16 is formed at the bottom of the bowl portion 12, is disposed substantially horizontally toward the inlet of the drain trap pipe 14, and discharges wash water toward the drain trap pipe 14. ing.

  The rim water spouting port 18 is formed at the upper left rear of the bowl portion 12 and discharges cleaning water along the upper edge of the bowl portion 12.

  The drain trap pipe 14 includes an inlet 14a, a trap ascending pipe 14b that rises from the inlet 14a, and a trap descending pipe 14c that descends from the trap ascending pipe 14b. The trap ascending pipe 14b and the trap descending pipe 14c 14d is the top portion 14d.

  As shown in FIG. 3, the water supply device 10 includes an electromagnetic on-off valve 34 that opens and closes a water supply line, a water supply switching valve 36 that distributes cleaning water to the jet water outlet 16 and the rim water outlet 18, and a jet water outlet. A water storage tank 20 that stores cleaning water supplied to 16 and a pressurizing pump 22 that pressurizes the stored cleaning water and supplies it to the jet water outlet 16. (This water supply path switching valve 36 corresponds to a rim water supply means and a jet water supply means.)

  The water supply device 10 is directly connected to a water supply system that supplies cleaning water, and the cleaning water is discharged from the rim spout 18 by the water supply pressure of the water supply. As for the jet water discharge, the wash water stored in the water storage tank 20 built in the water supply apparatus 10 is pressurized by the pressure pump 22 and discharged from the jet water discharge port 16 at a large flow rate.

Next, the operation of the automatic toilet cleaning function of the flush toilet according to the first embodiment will be described with reference to FIG.
First, when the human body leaves from the front of the toilet body 2, the human body detection signal of the human body detecting means 9 disappears and the human body is not detected (t1). When the time T1 elapses from time t1, the electric opening / closing device 7 starts the closing operation of the toilet lid 6 (t2). And if T2 time passes after starting to close the toilet lid 6, the water supply apparatus 10 will start water supply operation, before the toilet lid 6 has closed completely. That is, the electromagnetic opening / closing valve 34 is opened, and the water supply path switching valve 36 switches the water supply destination to the rim water spouting port 18 to perform rim water spouting (t3). The electric opening / closing device 7 completes the closing of the toilet lid 6 after a time (T2 + T3) longer than the time T2 has elapsed since the start of the toilet lid closing operation (t4). After T4 time has elapsed since the toilet lid 6 was closed, the water supply destination is switched from the rim water spouting port 18 to the jet water spouting port 16 and the pressurizing pump 22 is operated to perform jet water spouting (t5). Since this jet water discharge is a large flow rate, the drain trap pipe 14 is brought into a negative pressure state to cause a siphon phenomenon (t6), and the water accumulated in the bowl portion 12 is poured into the drain trap pipe 14 at a stretch. After the disappearance of the siphon phenomenon, the water supply destination is switched to the rim water spouting port 18 again (t7), the washing water is poured into the bowl portion 12 to form the sealed water, and the series of washing operations is finished (t8).

Next, with reference to FIG. 5, the operation | movement at the time of toilet bowl washing | cleaning by the remote control of the flush toilet bowl by 1st embodiment is demonstrated.
First, when the user presses the toilet flushing switch 11a of the remote controller 11 (t1 ′), the flush toilet that receives the toilet flushing instruction from the remote controller 11 starts executing the toilet flushing operation. Immediately after the toilet flushing switch is operated, the electric opening / closing device 7 starts the closing operation of the toilet lid 6 (t2). And before the toilet lid 6 closes, the water supply apparatus 10 starts water supply operation | movement. That is, the electromagnetic opening / closing valve 34 is opened, and the water supply channel switching valve 36 switches the water supply destination to the rim water spouting port 18 (t3). The electric opening and closing device 7 completes the closing of the toilet lid 6 after a time (T2 + T3) longer than the time T2 has elapsed since the start of the toilet lid closing operation (t4). After T4 time has elapsed since the toilet lid 6 was closed, the water supply destination is switched from the rim water spouting port 18 to the jet water spouting port 16 and the pressurizing pump 22 is operated to perform jet water spouting (t5). Since this jet water discharge is a large flow rate, the drain trap pipe 14 is brought into a negative pressure state to cause a siphon phenomenon (t6), and the water accumulated in the bowl portion 12 can be poured into the drain trap pipe 14 at a stretch. After the disappearance of the siphon phenomenon, the water supply destination is switched to the rim water spouting port 18 again (t7), the washing water is poured into the bowl portion 12 to form the sealed water, and the series of washing operations is finished (t8).

  In the flush toilet according to the present embodiment, since the toilet lid is completely closed at the time of starting jet water spouting to generate the siphon phenomenon, the washing sound before and after the occurrence of the siphon phenomenon is suppressed from propagating to the outside. Can be reduced. In addition, since the toilet lid is not closed at the stage of the front rim water discharge prior to that, it is possible to visually confirm that toilet flushing has been performed from a place away from the toilet body 2, and further, the cleaning sound of the front rim water discharge can be heard. Therefore, the user can be surely recognized that the toilet bowl cleaning has been performed, and a sense of security can be given.

  In particular, when performing automatic toilet flushing by the human body detection means, at the start of toilet flushing, people are often away from the toilet bowl, but with the flush toilet of this embodiment, the initial cleaning sound of toilet flushing is Since it is transmitted without being reduced, it is easy to recognize that toilet flushing is being performed even when away from the toilet, and it is possible to leave the toilet safely.

  Next, a second embodiment of the flush toilet of the present invention will be described with reference to FIGS. FIG. 6 is a block diagram for explaining the water supply system of the flush toilet, and FIG. 7 is a time chart showing the relationship between the toilet lid closing operation and the toilet flushing operation during automatic flushing of the flush toilet. In addition, the same code | symbol is attached | subjected about the same structure as embodiment mentioned above, and the description is abbreviate | omitted.

The water supply device 110 in the flush toilet 100 is different from the above-described first embodiment in the configuration of the water supply device 110 and the automatic toilet cleaning operation.
As shown in FIG. 6, the water supply device 110 includes an electromagnetic on-off valve 34 that opens and closes a water supply line, and a water supply path switching valve 36 that distributes wash water to the jet water outlet 16 and the rim water outlet 18. Yes. (This water supply path switching valve 36 corresponds to a rim water supply means and a jet water supply means.)

Next, the operation of the automatic toilet cleaning function of the flush toilet according to the first embodiment will be described with reference to FIG.
First, when the human body leaves from the front of the toilet body 2, the human body detection signal of the human body detecting means 9 disappears and the human body is not detected (t11). When T11 time has elapsed from time t11, water supply device 110 starts a water supply operation. That is, the electromagnetic opening / closing valve 34 is opened, and the water supply channel switching valve 36 switches the water supply destination to the rim water spouting port 18 to perform rim water spouting (t12). Then, the electric opening / closing device 7 starts the closing operation of the toilet lid 6 during execution of the rim water discharge after the lapse of T12 hours from the start of toilet flushing (t13). Then, before the toilet lid 6 is completely closed, the water supply device 110 performs the jet water discharge by switching the water supply destination from the rim water discharge port 18 to the jet water discharge port 16 (t14). The electric opening / closing device 7 completes the toilet lid closing operation soon after the start of jet water discharge (t15). After the toilet lid is closed, the drain trap pipe 14 is brought into a negative pressure state by jet water discharge to generate a siphon phenomenon (t16), and the water accumulated in the bowl portion 12 is poured into the drain trap pipe 14 at once. After the disappearance of the siphon phenomenon, the water supply destination is switched again to the rim spout 18 (t17), and the wash water is poured into the bowl portion 12 to form a sealed water, and the series of cleaning operations is finished (t18).

  In the automatic toilet cleaning function of this embodiment, since toilet cleaning is performed before the toilet lid 6 begins to close, it can be visually confirmed from the place away from the toilet body 2 that toilet cleaning has started. In addition, it can be confirmed by hearing that toilet cleaning is being performed by causing the toilet cleaning sound at the time of rim water discharge, which is a relatively low sound, to resonate outside the toilet. Furthermore, in the flush toilet of the type that performs rim water discharge and jet water discharge separately, the jet water discharge (so-called blow) after the accumulated water in the bowl portion 12 is discharged due to siphon phenomenon is the most washed out of the jet water discharge. The sound becomes louder. Moreover, since the jet water discharge directly hits the drain trap pipe 14 without passing through the accumulated water, the cleaning sound is louder in the high frequency range. Therefore, in the flush toilet of this embodiment, the toilet lid closing operation is not completed at the time of the start of jet water discharge, but since the toilet lid closing operation is completed before the siphon phenomenon occurs, the toilet flushing is performed. Propagation of sound to the outside of the toilet can be suppressed, and cleaning sound can be effectively reduced.

  In particular, when performing automatic toilet flushing by the human body detection means, at the start of toilet flushing, people are often away from the toilet bowl, but with the flush toilet of this embodiment, the initial cleaning sound of toilet flushing is Since it is transmitted without being reduced, it is easy to recognize that toilet flushing is being performed even when away from the toilet, and it is possible to leave the toilet safely.

  Next, a third embodiment of the flush toilet of the present invention will be described with reference to FIGS. FIG. 8 is a block diagram for explaining the water supply system of the flush toilet, and FIG. 9 is a time chart showing the relationship between the toilet lid closing operation and the toilet flushing operation during the automatic toilet flushing of the flush toilet. In addition, the same code | symbol is attached | subjected about the same structure as embodiment mentioned above, and the description is abbreviate | omitted.

The water supply device 210 in the flush toilet 200 is different from the first embodiment described above in the configuration of the water supply device 210 and the automatic toilet cleaning operation.
As shown in FIG. 8, the water supply device 210 that supplies the wash water supplied from the water supply to the flush toilet 200 includes a rim opening / closing valve 220 (rim supply means) that controls the supply of the wash water to the rim spout 18. A jet opening / closing valve 230 (jet water supply means) that controls the supply of cleaning water to the jet water spouting port 16 is configured.

Next, the operation of the automatic toilet cleaning function of the flush toilet according to the third embodiment will be described with reference to FIG.
First, when the human body leaves from the front of the toilet body 2, the human body detection signal of the human body detecting means 9 disappears and the human body is not detected (t1). When the time T1 elapses from time t1, the electric opening / closing device 7 starts the closing operation of the toilet lid 6 (t2). And if T2 time passes after starting to close the toilet lid 6, the water supply apparatus 10 will start water supply operation, before the toilet lid 6 has closed completely. That is, the rim opening / closing valve 220 is opened to supply rinsing water to the rim water spouting port 18 to discharge the rim (t3). The electric opening / closing device 7 completes the closing of the toilet lid 6 after a time (T2 + T3) longer than the time T2 has elapsed since the start of the toilet lid closing operation (t4). After a lapse of T4 time from closing the toilet lid 6, the rim on-off valve 220 is closed, the jet on-off valve 230 is opened, and jet water discharge is performed (t5). Since this jet water discharge is a large flow rate, the drain trap pipe 14 is brought into a negative pressure state to cause a siphon phenomenon (t6), and the water accumulated in the bowl portion 12 can be poured into the drain trap pipe 14 at a stretch. After the disappearance of the siphon phenomenon, the jet on / off valve 230 is closed, the rim on / off valve 220 is opened again (t7), washing water is poured into the bowl portion 12 to form sealed water, and a series of washing operations is completed (t8). .

  As described above, the third embodiment is different from the first embodiment in the water supply system of the flush toilet, but the operation of the automatic toilet cleaning function is the same. Therefore, similarly to the first embodiment, since the toilet lid is completely closed at the time of starting jet spouting for generating the siphon phenomenon, the cleaning sound before and after the occurrence of the siphon phenomenon is suppressed from propagating to the outside. Sound can be reduced. In addition, since the toilet lid is not closed at the stage of the front rim water discharge prior to that, it is possible to visually confirm that toilet flushing has been performed from a place away from the toilet body 2, and further, the cleaning sound of the front rim water discharge can be heard. Therefore, the user can be surely recognized that the toilet bowl cleaning has been performed, and a sense of security can be given.

  In particular, when performing automatic toilet flushing by the human body detection means, at the start of toilet flushing, people are often away from the toilet bowl, but with the flush toilet of this embodiment, the initial cleaning sound of toilet flushing is Since it is transmitted without being reduced, it is easy to recognize that toilet flushing is being performed even when away from the toilet, and it is possible to leave the toilet safely.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a block diagram for explaining the water supply system of the flush toilet, and FIG. 11 is a time chart showing the relationship between the toilet lid closing operation and the toilet flushing operation during the automatic toilet flushing of the flush toilet. In addition, the same code | symbol is attached | subjected about the same structure as embodiment mentioned above, and the description is abbreviate | omitted.

  In this flush toilet 300, flush water supplied from the water supply is temporarily stored in a low tank 320 placed on the upper rear part of the toilet body 2, and then supplied to the bowl portion 12 from the rim water discharge pipe 16 of the toilet body 2. It is generally called a siphon toilet. The water supply device 310 includes a low tank 320, a water supply control valve 330 that controls the supply of wash water to the row tank 320, a drain valve 340 that controls the supply of wash water stored in the row tank 320 to the toilet body 2, and a drain valve. The electric cleaning unit 350 and the ball chain 352 for controlling the opening and closing of the 340 are configured. The electric cleaning unit 350 controls the opening and closing of the water supply control valve 330 by a link mechanism (not shown).

Next, the operation of the automatic toilet cleaning function of the flush toilet according to the fourth embodiment will be described with reference to FIG.
First, when the human body leaves from the front of the toilet body 2, the human body detection signal of the human body detecting means 9 disappears and the human body is not detected (t21). When T21 time elapses from time t21, the electric opening and closing device 7 starts the closing operation of the toilet lid 6 (t22). And when T22 time passes after starting to close the toilet lid 6, the water supply apparatus 310 will start water supply operation, before the toilet lid 6 is completely closed. That is, the water supply control valve 330 and the drain valve 340 are opened to supply cleaning water to the rim water spouting port 18 of the toilet body 2 to start toilet cleaning (t23). The electric opening / closing device 7 completes the closing of the toilet lid 6 after a time (T22 + T23) longer than the time T2 has elapsed since the start of the toilet lid closing operation (t24). After T24 hours have passed since the toilet lid 6 was closed, the drain trap line 14 became full of water and became in a negative pressure state, causing a siphon phenomenon (t25), and the accumulated water accumulated in the bowl portion 12 was collected from the drain trap line 14 Pour into at once. Even after the disappearance of the siphon phenomenon, the water supply from the low tank 320 is continued, so that a sealed water is formed in the bowl portion 12 and the series of cleaning operations is finished (t26).

  Also in the flush toilet of the fourth embodiment, since the toilet lid 6 is being closed at the time of starting the toilet flushing operation and the toilet lid is not completely closed, a relatively small washing sound at the start of toilet flushing. Can be reverberated outside the toilet body 2, and it can be confirmed that the toilet bowl cleaning has been executed. Further, in the siphon toilet, since the washing water passes through the drain trap pipe 14 while entraining air at the time of the occurrence of the siphon phenomenon, a loud sound “bokeh” is generated. However, in this embodiment, since the toilet lid closing operation is completed before the siphon phenomenon occurs, this sound can suppress the propagation to the outside of the toilet body 2, and the toilet cleaning sound can be effectively generated. Can be reduced.

  In particular, when performing automatic toilet flushing by the human body detection means, at the start of toilet flushing, people are often away from the toilet bowl, but with the flush toilet of this embodiment, the initial cleaning sound of toilet flushing is Since it is transmitted without being reduced, it is easy to recognize that toilet flushing is being performed even when away from the toilet, and it is possible to leave the toilet safely.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment, like the flush toilet of the first embodiment, the third embodiment, and the fourth embodiment, when the toilet flushing operation is performed after a certain period of time after the start of the toilet lid closing operation. Although this is an applicable embodiment, the following description is based on the first embodiment.

FIG. 12 is a flowchart for explaining a toilet bowl cleaning operation in the present embodiment.
In the flush toilet 1, the automatic toilet cleaning mode for executing automatic toilet cleaning and automatic toilet lid closing is set to ON (S100). In this state, when the human body moves from the front of the toilet and the human body detection signal of the human body detecting means 9 disappears (S110), when a predetermined time (T1) elapses (S120), the toilet lid closing operation is started (S130). ). After a predetermined time (T2) has elapsed since the start of the toilet lid closing operation (S150: YES), execution of the toilet bowl cleaning operation is started (S150). After a predetermined time (T2 + T3) has elapsed from the start of the toilet lid closing operation, the toilet lid closing operation is completed, and then the execution of the toilet lid washing operation is completed. Here, a time difference of T2 is secured from the start of the toilet lid closing operation to the start of the toilet flushing operation. This time difference T2 is a period during which the toilet lid is closed for several seconds (preferably 2 seconds to 5 seconds) immediately before the start of toilet cleaning, so to speak, the start of toilet cleaning is announced.
During this time difference T2 (during the toilet bowl cleaning operation), the start of the automatic toilet bowl cleaning is counted down. In this embodiment, the toilet bowl washing stop means for stopping the automatic toilet bowl washing function without starting the toilet bowl washing operation. It has. The toilet bowl washing stop means is a toilet lid opening switch 11b (see FIG. 1 and the like) provided on the remote controller, and operates the toilet lid opening switch 11b during the toilet lid closing operation before the toilet bowl washing operation is started (S190). :)), the closing operation of the toilet lid 6 is stopped halfway and reopened, and the countdown of the automatic toilet cleaning that has been counted down is stopped, and the automatic toilet cleaning operation is stopped (S200).

  For example, the body may be moved from the front of the toilet body 2 unintentionally after the stool, and the automatic toilet cleaning function may be executed. If you need to observe the excrement, you want to stop the toilet flushing. According to the present embodiment, the convenience of the toilet is improved because it is provided with the toilet flushing stop means that notifies the start of toilet flushing by the closing operation of the toilet lid 6 and can stop the automatic toilet flushing function during the warning operation.

  In addition, as a toilet bowl washing | cleaning stop means, it detects that the user moved and stood in front of the toilet bowl main body 2, or the human body detection sensor 9 which detects a human body or the toilet lid 6 in the closing operation was opened by hand. A toilet lid opening / closing detection means can be used.

  Next, a sixth embodiment of the present invention will be described with reference to FIG. The sixth embodiment is different from the above-described embodiments in that two automatic toilet cleaning functions are provided. FIG. 13 is a time chart showing the relationship between the toilet cleaning operation and the toilet lid closing operation in the two automatic toilet cleaning modes.

The first automatic toilet cleaning mode is the same as the automatic toilet cleaning operation (FIG. 4) in the first embodiment. By starting the toilet cleaning operation before completing the toilet lid closing operation, the initial cleaning sound of toilet cleaning is performed. Is reverberated outside the flush toilet.
In the second automatic toilet cleaning mode, a toilet cleaning operation is executed (t32 to t36) when a predetermined time (T31) elapses after the human body non-detection (t31) of the human body detection means. This toilet cleaning operation is repeated in the order of rim water discharge, jet water discharge, and rim water discharge. Then, after the toilet cleaning operation is completed, the toilet lid closing operation is executed after a predetermined time (T33) has elapsed (t37 to t38). In the second automatic toilet cleaning mode, the toilet lid closing operation is executed after toilet cleaning is completed. Therefore, since the state after the toilet bowl has been washed can be visually confirmed, it can be confirmed that the excrement of one's own body has been washed away.

  As a selection means for selecting any one of these two automatic toilet flush modes, the mode change is not performed on a daily basis, and therefore the switch of the remote controller 11 is specially operated (for example, It is preferable that switching is possible by simultaneously pressing the toilet flushing switch 11a and the toilet lid closing switch 11b for 10 seconds.

  By operating this selection means, it is possible to select an automatic toilet cleaning mode suitable for the environment in which the flush toilet is installed and the preference of the householder.

The first to sixth embodiments of the present invention have been described above, but the present invention is not limited to the embodiments described as the embodiments.
For example, the first to fourth automatic toilet cleaning operations can be appropriately combined and executed on flush toilets having different first to fourth waterway systems. In addition, the toilet cleaning operation by the remote controller described with reference to FIG. 5 can be applied to the flush toilet in the second to fourth embodiments.

  Next, the detailed structure of the flush toilet of the first embodiment of the present invention will be described with reference to FIGS.

FIG. 14 is a diagram for explaining in detail the water supply unit 10 of the flush toilet 1 according to the first embodiment.
As shown in FIG. 14, the water supply unit 10 is provided with a water supply channel 24 through which flush water is supplied from the water supply. The water supply channel 24 has a stop cock 26, a strainer 28, and a branch fitting 30 from the upstream side. A constant flow valve 32, a diaphragm type electromagnetic on-off valve 34, and a water supply path switching valve 36 are provided.

  The constant flow valve 32, the electromagnetic on-off valve 34, and the water supply path switching valve 36 are integrally assembled as a valve unit 37 (see FIGS. 15 and 16) as shown in FIG. ing. Further, on the downstream side of the water supply path switching valve 36, there are a rim side water supply path 38 for supplying cleaning water to the rim spout 18 and a tank side water supply path 40 for supplying cleaning water to the water storage tank 20. It is connected.

  Here, the constant flow valve 32 is for restricting the wash water flowing from the water inlet 32a through the stop cock 26, the strainer 28, and the branch fitting 30 to a predetermined flow rate or less. In this embodiment, the constant flow valve 32 limits the flow rate of the washing water to 16 liters / minute or less. The washing water that has passed through the constant flow valve 32 flows into the electromagnetic on-off valve 34, and the washing water that has passed through the electromagnetic on-off valve 34 is selectively removed from the rim-side water supply path 38 to the rim by the water supply path switching valve 36. It is supplied to the water storage tank 20 from the water outlet 18 or from the tank side water supply path 40.

  A jet-side water supply path 46 is connected to the lower part of the water storage tank 20, and a downstream side of the jet-side water supply path 46 is connected to the jet water outlet 16. A pressurizing pump 22 is provided in the middle of the jet side water supply passage 46. The pressurizing pump 22 pressurizes the wash water stored in the water storage tank 20 and discharges it from the jet water outlet 16.

  The jet side water supply path 46 is composed of an upstream jet side water supply path 46 a and a downstream jet side water supply path 46 b upstream of the pressurizing pump 22. Here, as shown in FIG. 14, the downstream jet side water supply passage 46 b is formed in a convex shape upward, and the top portion 46 c, which is the highest portion of this convex portion, is jetted from the water storage tank 20. It is the highest portion of the jet side water supply channel 46 leading to the water port 16.

  Next, a vacuum breaker 48 is provided in the rim-side water supply passage 38 described above, so that backflow from the rim spout 18 of washing water is prevented when negative pressure is generated in the water supply passage 24. Further, the vacuum breaker 48 is disposed above the upper end surface of the bowl portion 12, thereby reliably preventing backflow. Further, the washing water overflowing from the atmosphere opening portion of the vacuum breaker 48 flows into the water storage tank 20 through the pipe line 50. The tank side water supply passage 40 is also provided with a vacuum breaker 42 as a check valve to prevent the backflow of the wash water from the storage tank 20.

  Similarly, a vacuum breaker 52, which is a check valve, is also provided in the downstream jet side water supply path 46b of the jet side water supply path 46 described above, and prevents backflow from the jet spout 16 of the wash water. , Cut the edges between them. Moreover, the vacuum breaker 52 is arrange | positioned above the upper end surface of the bowl part 12, and, thereby, prevents the back flow reliably. Further, the washing water overflowing from the atmosphere opening portion of the vacuum breaker 52 flows into the water storage tank 20 through the pipe line 54.

  Furthermore, a flapper valve 56 and a water drain plug 58, which are check valves, are provided in the upstream jet side water supply path 46a of the jet side water supply path 46. The flapper valve 56 and the water drain plug 58 are disposed at a height near the lower end of the water storage tank 20 below the pressurizing pump 22. For this reason, by opening the water drain plug 58, the cleaning water in the water storage tank 20 and the pressure pump 22 can be discharged during maintenance or the like. Further, by disposing the flapper valve 58 between the water storage tank 20 and the pressurizing pump 22, when the water level in the water storage tank 20 becomes lower than the height of the pressurizing pump 22, the washing water is supplied to the pressurizing pump 22. Therefore, it is prevented that the washing water in the pressurizing pump 22 is lost and the pressurizing pump 22 is idling. Further, a water receiving tray 60 is disposed below the water storage tank 20 and the pressure pump 22 so as to receive condensed water droplets and water leakage.

  In addition, the water supply unit 10 receives signals from the human body detection means 9 and the remote controller 11 (see FIG. 1), opens and closes the electromagnetic on / off valve 34, switches the water supply path switching valve 36, and the pressurizing pump 22. A control unit 62 is connected to control the rotational speed, operating time, and the like.

  The water storage tank 20 is for storing the wash water to be discharged from the jet water outlet 16, and in this embodiment, the water storage tank 20 has an internal volume of about 2.5 liters.

  Inside the water storage tank 20, an upper end float switch 64a and a lower end float switch 64b, which are water level detection means, are arranged. Further, an abnormal water level float switch 64c, which is a water level detection means, is arranged at a position above the water level of the upper end float switch 64a by a predetermined height. These float switches 64a, 64b, and 64c are provided as separate switches (water level detection sensors).

The upper end float switch 64a is turned on when the water level in the water storage tank 20 reaches the full water position (= first water level) during normal use, and the control unit 62 detects this and closes the electromagnetic on-off valve 34.
The lower end float switch 64b is turned on when the water level in the water storage tank 20 drops to a predetermined water level, and the control unit 62 detects this and stops the pressurizing pump 22.

  The abnormal water level float switch 64c is switched on when the water level in the water storage tank 20 reaches an abnormal water level (= second water level) that is higher than the first position, such as when the electromagnetic on-off valve 34 bites dust. The control unit 62 detects this and operates the water supply channel switching valve 36 to communicate with the rim-side water supply channel 38.

  A lid 20a is attached to the upper portion of the water storage tank 20 so as to cover the opening at the upper end. The lid 20a is provided with a circular hole, and a cylindrical body 20b is attached so as to extend upward so as to surround the hole.

  Furthermore, an overflow channel 70 is provided at one end of the water storage tank 20 at the same position as the abnormal water level float switch 64c, with the other end opened and the other end connected to the downstream jet side water supply passage 46b. A flapper valve 72 as a check valve is attached to the overflow channel 70.

  The control unit 62 detects the human body of the human body detection means 9 by the operation of the toilet cleaning switch 11a (see FIG. 1) by the user or when a person standing in front of the toilet body 2 moves from the front of the toilet body 2. When the signal disappears (no human body detected), the electromagnetic on-off valve 34, the water supply path switching valve 36, and the pressurizing pump 22 are sequentially operated, and water discharge from the rim water discharge port 18 and then from the jet water discharge port 16 is sequentially started. The bowl portion 12 is washed. Further, after the cleaning is completed, the control unit 62 opens the electromagnetic switching valve 34 and switches the water supply channel switching valve 36 to the water storage tank 20 side to replenish the water storage tank 20 with cleaning water. When the water level in the water storage tank 20 rises and the upper end float switch 64a detects the specified water storage amount, the control unit 62 closes the electromagnetic on-off valve 34 and stops water supply.

  Next, the structure and operation contents of the valve unit 37 (particularly the water supply channel switching valve 36) in the flush toilet of this embodiment will be described with reference to FIGS. FIG. 15 is a partial configuration diagram illustrating a state of water supply on the rim spout side of the switching valve of the flush toilet according to the embodiment of the present invention, and FIG. 16 illustrates water supply on the tank side of the switching valve of the flush toilet according to the embodiment of the present invention. It is a partial block diagram which shows this state.

First, as shown in FIG. 15, the electromagnetic on-off valve 34 includes a diaphragm 34a and a solenoid 34b for opening and closing the diaphragm 34a.
The water supply path switching valve 36 includes a first port 36 a that opens to the upstream constant flow valve 32 side, a second port 36 b that opens to the tank side water supply path 40, and a third port 36 c that opens to the rim side water supply path 38. I have. The water supply path switching valve 36 includes a rotor (valve element) 36d for switching these ports, and the rotor 36d is driven to a desired position by a stepping motor (not shown) that is a drive motor. It has become.

Specifically, in the water supply channel switching valve 36, when supplying the wash water to the water storage tank 20, the third port 36c is closed to connect the first port 36a and the second port 36b (FIG. 17A). When the cleaning water is supplied to the rim water spouting port 18, the second port 36b is closed and the first port 36a and the third port 36c are communicated (see FIG. 17B).
Further, in the water supply path switching valve 36, the rotor 36d closes a part of each of the second port 36b and the third port 36c, whereby the water supply path 24 is connected to both the rim side water supply path 38 and the tank side water supply path 40. You can also communicate with. (See FIG. 17 (c))

  In this embodiment, when supplying cleaning water to the rim spout 18, as shown in FIG. 15, the control unit 62 opens the diaphragm 34 a of the electromagnetic on-off valve 34 and the second water supply path switching valve 36. By closing the port 36b and allowing the first port 36a and the third port 36c to communicate with each other, the cleaning water is supplied to the rim water spouting port 18.

  And as shown in FIG. 16, when supplying wash water to the water storage tank 20, the control part 62 closes the 3rd port 36c of the water supply path switching valve 36, and the 1st port 36a and the 2nd port 36b. As a result, the cleaning water is supplied to the water storage tank 20.

Next, the basic operation of the flush toilet 1 according to this embodiment will be described with reference to FIG. FIG. 18 is a time chart showing the relationship between the toilet lid closing operation and the toilet bowl cleaning operation at the time of automatic toilet flushing in the flush toilet of this embodiment.
As shown in FIG. 18, first, in the standby state (t0 to t1), the water supply channel switching valve 36 is in a position where it communicates with both the rim-side water supply channel 38 and the tank-side water supply channel 40. Next, in this standby state (t0 to t1), when the human body detecting means 9 does not detect the human body standing in front of the toilet body 2 (human body non-detection), the operation of closing the toilet lid 6 is started after a predetermined time has elapsed. (T2). Thereafter, when a predetermined time (T2) elapses, the first rim water discharge (pre-rim cleaning) is started (t3). That is, the control unit 62 sends a signal to the electromagnetic opening / closing valve 34 to open it, and switches the water supply channel switching valve 36 to the rim water spouting port 18 side, and discharges the wash water from the rim water spouting port 18 by the water supply pressure. When the electromagnetic open / close valve 34 is opened, the wash water supplied from the water supply flows into the constant flow valve 32 from the water inlet 32 a through the stop cock 26, the strainer 28, and the branch fitting 30. In the constant flow valve 32, when the supply pressure of the water supply is high, the flow rate of the wash water that passes is limited to a predetermined flow rate, and when the supply water pressure is low, the wash water is passed without restriction on the flow. The The wash water that has passed through the constant flow valve 32 passes through the electromagnetic open / close valve 34 and the water supply path switching valve 36, passes through the vacuum breaker 48, the rim side water supply path 38, and opens to the rear left side of the upper portion of the bowl portion 12. It is discharged from the water port 18. The washing water discharged from the rim water spouting port 18 flows downward while turning in the bowl portion 12, and the inner wall surface of the bowl portion 12 is washed.

Thereafter (t4), the toilet lid closing operation is completed, and the toilet lid 6 completely closes the bowl portion 12. Then, the rim water discharge is finished and the jet water discharge is started (t5), and the replenishment of the washing water to the water storage tank 20 is also started.
First, the control unit 62 sends a signal to the pressurizing pump 22 to activate it, and keeps the pump speed at N1. When the pressurization pump 22 is activated, the wash water stored in the water storage tank 20 flows into the pressurization pump 22 through the flapper valve 56 and is pressurized. The washing water pressurized by the pressurizing pump 22 passes through the top portion 46c of the downstream jet side water supply passage 46b and is discharged from the jet water outlet 16 opened at the bottom of the bowl portion 12.
At this time, the air staying in the vicinity of the top portion 46c of the downstream jet side water supply passage 46b reaches the vacuum breaker 52 and is released from the atmosphere opening portion.
Thereafter, when the cleaning water in the water storage tank 20 is discharged, the upper end float switch 64a is turned off. When the upper end float switch 64a is turned off and a predetermined time elapses, the control unit 62 sends a signal to the water supply path switching valve 36 in a state where the electromagnetic on-off valve 34 is held in the released state to move to the tank side water supply path 40 side. Switching is performed and cleaning water is supplied to the water storage tank 20.

  The washing water discharged from the jet spout 16 flows into the drain trap pipe 14 and fills the drain trap pipe 14 to generate a siphon phenomenon (t6). Due to this siphon phenomenon, the accumulated water and dirt in the bowl portion 12 are sucked into the drain trap pipe 14 and discharged from the drain pipe D. Here, in the present embodiment, the pressurizing pump 22 first rotates at the pump rotation speed N1 (t5 to t51), so that the pressurizing force becomes large and can be discharged from the jet spout 16 at a large flow rate. Thereby, the siphon phenomenon in the drain trap pipe 14 is rapidly caused, and the accumulated water and the filth in the bowl portion 12 are quickly discharged.

  After that (t51), the pressure is slightly reduced by lowering the rotational speed of the pump to N2, and the washing water is continuously discharged from the jet water outlet 16. The rotational speed N2 of the pump is a flow rate necessary for the jet water discharge to convey the filth to the top 14d of the drain trap pipe 14.

  In the present embodiment, as indicated by a broken line in FIG. 18, the pump speed may be maintained as N1 without being reduced to N2 (t5 to t52).

Furthermore, in the present embodiment, the rotation speed of the pressure pump is controlled so that the water discharged from the jet water outlet gradually decreases at the end of the jet water discharge at the pump rotation speed N2 (t52 to t7). .
As a result, the siphon break noise caused by the sudden break of the siphon phenomenon is reduced to some extent.

  Thus, by operating the pressurizing pump 34 for a predetermined time (time t5 to t7), the cleaning water is discharged from the jet water outlet 16, and the amount of water stored in the water storage tank 20 becomes substantially zero. By stopping the pressurizing pump 22, water discharge from the jet water discharge port 16 is stopped (t7). As a result, the atmosphere is introduced from the vacuum breaker 52 into the jet-side water supply passage 46, and the stored water in the bowl portion 12 and the wash water in the water storage tank 20 are separated.

  In this embodiment, cleaning water is supplied to the water storage tank 20 at the same time during jet water discharge (time t5 to t7). At this time, the control unit 62 sends a signal to the flow path switching valve 36 while switching the electromagnetic switching valve 34 to the tank side while maintaining the electromagnetic switching valve 34 in the open state. Since the electromagnetic opening / closing valve 34 is opened F, the wash water flowing in from the water inlet 32a passes through the constant flow valve 32, the electromagnetic opening / closing valve 34, the water supply path switching valve 36, and the tank side water supply path 40, and is stored in the water storage tank. 20 flows in.

  Next, when jet water discharge ends (time t7), the control unit 62 sends a signal to the water supply channel switching valve 36 and switches to the rim side water supply channel 38 side with the electromagnetic on-off valve 34 held in the released state. Then, the second water discharge (rear rim cleaning) from the rim water discharge port 18 is started. The water level in the bowl portion 12 rises due to the second water discharge from the rim water discharge port 18, and after a predetermined rim water discharge time has elapsed (time t8), the inside of the bowl portion 12 reaches a predetermined sealed water level.

  After completion of the second rim water discharge (time t8), the washing water of the water storage tank 20 is replenished again. At this time, as described above, the control unit 62 sends a signal to the water supply channel switching valve 36 in a state where the electromagnetic on-off valve 34 is kept open, and switches to the tank side water supply channel 40 side to store the water storage tank 20. Flows in.

  When washing water is replenished in the water storage tank 20 and the water level in the water storage tank 20 reaches the first water level (time t9), the upper end float switch 64a is turned on. When the upper end float switch 64a is turned on, the control unit 62 sends a signal to the electromagnetic on-off valve 34 to close it. At this time, the diaphragm 34a of the electromagnetic on-off valve 34 is closed with a slight delay due to its structure. Therefore, the water supply path switching valve 36 communicates with both the rim-side water supply path 38 and the tank-side water supply path 40, which are standby positions, with a delay of a predetermined time in consideration of the delay time of the diaphragm 34a (time t10). It is designed to be operated in position.

Next, the basic operation of the flush toilet according to the second embodiment of the present invention will be described with reference to FIG. The flush toilet of the second embodiment has the same configuration as that of the first embodiment described above, but the toilet flushing operation is different in that rim water spouting is performed even during jet water spouting. FIG. 19 is a time chart showing the relationship between the toilet lid closing operation and the toilet bowl cleaning operation during automatic toilet flushing in the flush toilet of the present embodiment.
As shown in FIG. 19, rim water discharge (front rim washing) is started during the toilet lid closing operation (t3), and after T3 time (t4), the toilet lid closing operation is completed and the toilet lid 6 is completely removed from the bowl portion 12. Close. Thereafter (t5), jet water discharge by the pressure pump 22 is started. While the washing water stored in the water storage tank 20 is being pumped by the pressurizing pump, the water supply switching valve 36 is not switched to the jet side water supply path 40 side and the cleaning water is supplied to the rim side water supply path 38. .
The washing water discharged from the jet spout 16 flows into the drain trap pipe 14 and fills the drain trap pipe 14 to generate a siphon phenomenon (t6). Due to this siphon phenomenon, the accumulated water and dirt in the bowl portion 12 are sucked into the drain trap pipe 14 and discharged from the drain pipe D. Here, in the present embodiment, the pressurizing pump 22 first rotates at the pump rotation speed N1 (t5 to t51), so that the pressurizing force becomes large and can be discharged from the jet spout 16 at a large flow rate. Thereby, the siphon phenomenon in the drain trap pipe 14 is rapidly caused, and the accumulated water and the filth in the bowl portion 12 are quickly discharged.

  After that (t51), the pressure is slightly reduced by lowering the rotational speed of the pump to N2, and the washing water is continuously discharged from the jet water outlet 16. The rotational speed N2 of the pump is a flow rate necessary for the jet water discharge to convey the filth to the top 14d of the drain trap pipe 14.

  Thus, by operating the pressurizing pump 34 for a predetermined time (time t5 to t7), the cleaning water is discharged from the jet water outlet 16, and the amount of water stored in the water storage tank 20 becomes substantially zero. By stopping the pressurizing pump 22, water discharge from the jet water discharge port 16 is stopped (t7).

  When the jet water discharge is completed (time t7), the water discharge from the rim water discharge port 18 is continued without interruption, and so-called post-rim cleaning is performed. The water level in the bowl portion 12 rises due to the rim water discharge after the jet water discharge ends, and after the predetermined rim water discharge time has elapsed (time t8), the bowl portion 12 reaches a predetermined sealed water level.

  After the rim water discharge is finished (time t8), the washing water of the water storage tank 20 is replenished. At this time, the control unit 62 sends a signal to the water supply channel switching valve 36 with the electromagnetic on-off valve 34 held open, switches to the tank side water supply channel 40 side, and flows into the water storage tank 20.

  When washing water is replenished in the water storage tank 20 and the water level in the water storage tank 20 reaches the first water level (time t9), the upper end float switch 64a is turned on. When the upper end float switch 64a is turned on, the control unit 62 sends a signal to the electromagnetic on-off valve 34 to close it.

  As described above, in the flush toilet of the present embodiment, the rim water spouting is continuously executed even in the jet water spouting, so that the accumulated water in the bowl portion 12 does not become empty during the jet water spouting. The cleaning sound during jet water discharge is reduced as compared with the embodiment.

Now, the state of reduction in toilet cleaning sound in the flush toilet of the embodiment of the present invention will be described.
The present applicant arranges the measuring device at a position 1 m ahead from the mounting hole of the toilet body 2 and 1 m above the upper surface of the toilet body 2, and flushes the toilet bowl according to the embodiment of the present invention. As a result, noise measurement was performed for each toilet flush with the toilet lid open. The result is shown in FIG.

According to FIG. 20, there is almost no difference in cleaning sound between the present invention and the comparative example in rim cleaning (0 second to 6 seconds). However, in the jet cleaning (6 seconds to 8.5 seconds), both the present invention and the comparative example have a louder cleaning sound than the rim cleaning as a whole, but particularly in the latter period (around 7 seconds), In the state where all the water is discharged, blow cleaning is performed in which the jet water discharge directly collides with the drain trap pipe 14, and the siphon is cut off. In the open state), the cleaning sound peak value was 70 dB. However, in the present invention (when the toilet lid is closed), the peak value of the cleaning sound is reduced to 60 dB.
From this figure, it can be seen that, by closing the toilet lid and cleaning the toilet bowl, the cleaning sound reduction effect in the later stage of jet water spouting, in which the cleaning sound is louder than that during rim water spouting, is remarkable.

As mentioned above, although embodiment and the Example of this invention were described based on the figure, this invention is not limited to these.
For example, in the above example, the automatic toilet cleaning operation is started by the human body non-detection of the human body detecting means 9 that detects that the human body standing in front of the toilet has moved. The seating sensor for detecting the automatic toilet may start the automatic toilet cleaning operation when it detects that the person who was sitting up stood up (seated).

1 is a side view of a flush toilet according to a first embodiment of the present invention. It is a top view of the flush toilet. It is a block diagram explaining the water supply system of the flush toilet. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet bowl washing | cleaning of the flush toilet, and toilet bowl washing operation. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of toilet bowl washing | cleaning by the remote control of the flush toilet, and toilet bowl washing operation. It is a block diagram explaining the water supply system of the flush toilet bowl by 2nd embodiment of this invention. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet bowl washing | cleaning of the flush toilet, and toilet bowl washing operation. It is a block diagram explaining the water supply system of the flush toilet bowl by 3rd embodiment of this invention. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet bowl washing | cleaning of the flush toilet, and toilet bowl washing operation. It is a block diagram explaining the water supply system of the flush toilet bowl by 4th embodiment of this invention. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet bowl washing | cleaning of the flush toilet, and toilet bowl washing operation. It is a flowchart explaining the toilet bowl washing | cleaning operation | movement of the flush toilet bowl by 5th embodiment of this invention. It is a time chart which shows the relationship between the toilet bowl washing | cleaning operation | movement and toilet lid closing operation | movement in the two automatic toilet bowl washing modes of the flush toilet bowl by 6th embodiment of this invention. It is a figure explaining in detail the water supply part of the flush toilet according to the first embodiment of the present invention. It is a partial block diagram which shows the state of the rim water outlet side water supply of the switching valve of the flush toilet by 1st Example of this invention. It is a partial block diagram which shows the state of the tank side water supply of the switching valve of the flush toilet by the 1st Example of this invention. It is a figure which shows the state which switches the water supply destination of the water supply switching valve of the flush toilet by the 1st Example of this invention. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet cleaning of the flush toilet bowl by 1st Example of this invention, and toilet bowl cleaning operation | movement. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of the automatic toilet cleaning of the flush toilet bowl by 2nd Example of this invention, and toilet bowl washing operation. It is a figure explaining the reduction condition of the toilet bowl washing sound of the flush toilet bowl by the Example of this invention. It is a time chart which shows the relationship between the toilet lid closing operation | movement at the time of toilet bowl washing | cleaning in the conventional flush toilet bowl, and toilet bowl washing operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Toilet body 4 Toilet seat 6 Toilet lid 7 Electric switchgear 9 Human body detection means 10 Water supply apparatus 11 Remote control 11a Toilet washing switch 11b Toilet lid opening switch (toilet washing stop means)
12 Bowl part 14 Drain trap line 16 Jet spout 18 Rim spout 20 Reservoir 22 Pressure tank 34 Electromagnetic on-off valve 36 Water supply switching valve (rim water supply means / jet water supply means)
62 Control unit 100 Flush toilet 110 Water supply device 200 Flush toilet 210 Water supply device 220 Rim open / close valve (rim water supply means)
230 Jet open / close valve (jet water supply means)
300 Flush toilet 310 Water supply device 320 Low tank 330 Water supply control valve 340 Drain valve 350 Electric cleaning unit

Claims (7)

A toilet that generates siphon phenomenon in the drain trap by supplying wash water and discharges the accumulated water in the bowl part, a toilet lid that covers the bowl part, and a state in which the toilet lid is closed from the opened state In the flush toilet equipped with an electric switchgear that performs a toilet lid closing operation, a water supply device that supplies the flush water to the toilet, and a controller that gives an operation command to the electric switchgear and the water supply device,
The control unit supplies cleaning water from the water supply device before the toilet lid closing operation by the electric opening and closing device is completed to start a toilet flushing operation, and supplies cleaning water to the toilet by the water supply device. A flush toilet characterized by performing control so that a toilet lid closing operation of the electric switchgear is completed earlier than the occurrence of the siphon phenomenon. The toilet bowl performs toilet flushing by supplying the wash water to the rim spout and jet spout of the bowl part,
The water supply device comprises rim water supply means for supplying cleaning water to the rim, and jet water supply means for supplying cleaning water to the jet spout.
The control unit operates the rim water supply means and the jet water supply means so as to supply water in the order of the rim water discharge port and the jet water discharge port of the bowl portion, and the electric opening and closing device supplies water to the jet water discharge port. The flush toilet according to claim 1, wherein the flush toilet is executed after the lid closing operation is completed.   The controller starts water supply to the rim spout by the rim water supply means before the electric opening and closing device completes the toilet lid closing operation, and the jet water supply after the electric opening and closing device completes the toilet lid closing operation. 3. The flush toilet according to claim 2, wherein water is supplied to the jet water outlet by means. Comprising a remote control having a toilet flushing switch for performing the toilet flushing;
The toilet bowl closing operation by the toilet lid electric opening and closing device is started by operating the toilet bowl washing switch, and then the toilet bowl washing operation is started. Flush toilet.   The control unit starts the toilet flushing operation by operating the water supply device a predetermined time after starting the toilet lid closing operation, and completes the toilet lid closing operation before a siphon phenomenon occurs in the drain trap The flush toilet according to claim 1. The control unit performs toilet flushing by operating the water supply device at a time difference after starting the toilet lid closing operation,
The flush toilet according to any one of claims 1 to 5, further comprising toilet flushing stop means that can be executed during the time difference and does not start the toilet flushing operation. A toilet that generates siphon phenomenon in the drain trap by supplying wash water and discharges the accumulated water in the bowl part, a toilet lid that covers the bowl part, and a state in which the toilet lid is closed from the opened state An electric opening / closing device to be operated, a water supply device for supplying cleaning water to the toilet, a human body detecting means for detecting a human body, and the electric opening / closing device and the water supply device based on disappearance of a human body detection signal by the human body detecting means In a flush toilet equipped with a control unit that gives an operation command,
The control unit includes a plurality of automatic toilet cleaning modes that define an operation command to be transmitted when the human body detection signal disappears,
The plurality of automatic toilet cleaning modes are:
A first auto toilet flushing mode controlled to start execution of a toilet lid closing operation by the electric switch after supplying flush water to the toilet by the water supply device and completing toilet flushing;
Before the toilet lid closing operation is completed by the electric opening and closing device, flush water is supplied from the water supply device to start a toilet flushing operation, and the flush water is supplied to the toilet by the water supply device to reduce the siphon phenomenon. A second automatic toilet flushing mode that is controlled to complete the toilet lid closing operation of the electric opening and closing device earlier than it is generated;
Including
A flush toilet comprising a selection means for selecting any one mode from the plurality of automatic toilet flush modes.

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