JPS6145033A - Toilet bowl washing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a toilet bowl cleaning device that supplies water into a tank with a water supply device having a float and drains this water into a toilet bowl with a drainage device.

<Prior Art> Conventionally, various structures have been known as this type of toilet bowl cleaning device, but a typical example is the structure 1i1 shown in FIG.
There is one published in No. 54-58858.

To explain the one in Fig. 15, the main body (B2) of the water supply device (B) has a tank <
A) A tubular body (3) that extends and opens near the bottom is connected, and the tubular body (3) is equipped with a water storage tank in order to break the vacuum state in the event that a vacuum state occurs on the upstream side. An air port (4) is provided above the water level when the water is full.

Therefore, in the conventional system described above, when water is supplied to the tank (A), water flows out from the outlet of the main body (B2) and flows down inside the tubular body (3) through the air port (4) of the tubular body (3). Shallow water.

Therefore, water falling from the air port (4) causes the tank (A
) not only causes water hammer, but also the sound of water falling from the air vent (4) hitting the reservoir water surface, and the rattling sound caused by the valves opening and closing frequently due to waves. This also results in the generation of noise.

In addition, in the one in Figure 15, the drainage device (C) is the tank (A).
> By manually rotating the operating lever (101) provided on the side wall (A1), the drain valve body (102) is pulled up and the drain valve (C+) is opened.
Even if the drain valve (C1) is pulled up manually, the drain valve (C1) cannot be opened reliably, or the drain valve body (102) falls under its own weight before the water in the tank (A) is completely drained.
It was not possible to close the valve and drain a certain amount of water.

<Problems to be Solved by the Invention> The problems to be solved by the present invention are to prevent the generation of A-tarhammer and noise, and to ensure reliable operation by draining a certain amount of water.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems are: a tank, a float installed in the tank that moves up and down according to fluctuations in the water level in the tank, and this float. A water supply device having a valve that opens as the tank lowers and closes as the tank rises; A drain valve consists of a drain valve element that opens and closes the seat, an electromagnet that is electrically operated and moves the drain valve element upward to open the drain valve, and a drain valve that is installed above the bottom wall of the tank and located at the bottom. The drain device comprises a container in which a passage is opened, and a slow closing means that is connected to a drain valve body and has a float disposed inside the container, and the tip is located at the bottom of the tank at the outlet of the main body of the water supply device. A tubular body that extends close to the opening is connected, and a vacuum breaker valve is provided in the middle of the tubular body at a position above the water level when the tank is full, and the vacuum breaker valve is located in the middle of the tubular body. A bored air port, a valve body disposed in the middle of the tubular body so as to be movable in the vertical direction and having a water passage hole in the axial direction, and a spring that urges the valve body upward. When water is not flowing, the spring positions the valve body above the air port, and when water is flowing, the valve body is lowered by the force of the spring against the force of the spring, and the air port is closed. .

<Function> The present invention eliminates shallow water from the air port of the vacuum breaker valve, and when the electromagnet of the drainage device is energized, the electromagnet attracts the drain valve body and moves to open the drain valve. The valve closes with a slight delay after a predetermined amount of water has been discharged by the action of the slow closing means.

<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.

This embodiment shows the case of a so-called high tank in which the tank (A) is placed above the toilet wall surface.

The tank (A) is equipped with a water supply device (B) on the top of the side wall (A1) and a drainage device (C) on the bottom wall (A2), with the former (B) serving as a water supply source and the latter (C) serving as a toilet bowl. In this embodiment, they are respectively connected to the urinal (D).

The water supply bag @ (B) is a well-known pole tap faucet that has a float (1) and a valve (B1) that is opened and closed by the vertical movement of the float (1). (1
) is opened to supply water into the tank <A), and as the float (1) rises as the water level rises, the valve closes to stop water supply.

In addition, the main body (B2) of the water supply device (B) is
3) is connected to the tubular body (3) via the connecting member (2).

The tip of the tubular body (3) is the bottom wall (A2) of the tank (A>).
It extends close and opens.

Further, the tubular body (3) is provided with a vacuum breaker valve (B4) at a position above the water level when the tank (A) is full.

The vacuum breaker valve (B4) has an air port (4) bored in the middle of the tubular body (3), and a vacuum breaker valve (B4) that is disposed slidably in the vertical direction inside the tubular body (3). It includes a valve body (5) that opens and closes the valve body, and a spring (6) that biases the valve body (5) upward.

The air port (4) is provided with first and second step portions (4a) (4b) which are vertically opposed to each other and protrude outward in the middle of the tubular body (3). ) with a large diameter valve chamber (4
C) is formed and bored in its bottom wall, that is, the second step (4b).

The valve body (5) has a diameter larger than the inner diameter of the bottom surface of the valve chamber (4C), that is, the inner diameter of the second stage part (4b), approximately in the center of a disc whose diameter is slightly smaller than the inner diameter of the valve chamber (4C). A guide cylinder that opens a water hole (5a) and extends upward along the edge of the water hole (5a), and has an outer diameter slightly smaller than the inner diameter of the tubular body (3) on the upstream side of the valve chamber (4C). The guide cylinder part (5b) is inserted into the tubular body (3) on the upstream side of the valve chamber (4C) so as to be slidable vertically within the valve chamber (4C). Deploy.

In addition, the valve body (5) is provided with several protrusions (5c) on the same circumference on the upper surface, and protrusions (5c) on the outer peripheral surface of the guide cylinder part (5b).
5d) Several pieces are provided in the axial direction, and the protrusion (5d) is connected to the valve chamber (4).
C) Upstream tubular body (3) so as to come into sliding contact with the wall surface.

The spring (6) protrudes from the inner peripheral surface of the tubular body (3) on the downstream side of the engagement recess (5e) provided at the edge of the water passage hole (5a) and the valve chamber (4c) on the lower surface of the valve body (5). The valve body (5) is elastically loaded across the formed annular convex portion (4d) and urges the valve body (5) toward the upstream side.

Therefore, the water supply device (B) that is refused is usually the tank (A).
) is full of water and valve (B1) is closed, the vacuum breaker valve (
The valve body (5) of B4) is pushed upstream by the spring (6) to open the air port (4).

On the other hand, when the water level in the tank (Δ) decreases and the float (1) descends to open the valve (B1), the outflow port (B
3) flows into the tubular body (3), and the force of the flowing water pushes the valve body (5) downward against the spring (6), and the second valve body (4C) forming the lower surface of the valve chamber (4C) It comes into close contact with the stepped portion (4b) to close the air port (4) and prevent water from leaking from the air port (4).

At this time, water flowing into the tubular body (3) is directed between the inner circumferential surface of the tubular body (3) and the guide tube by the protrusion (5d) provided on the outer circumferential surface of the guide tube (5b) of the valve body (5). The upper surface of the valve body (5) passes through the gap secured by the gate between the outer peripheral surface and the upper surface of the valve body (5B). ) = 8 - Since there is a gap over almost the entire surface between the spring (6) and the upper surface, water pressure can be applied to almost the entire surface of the upper surface, and the spring (6)
It is pushed down firmly against the

In addition, FIG. 7 shows another embodiment of the vacuum breaker valve (B4), in which the air port (4) is opened on the side peripheral surface of the tubular body (3), and the valve body (5) is opened in the axial direction. It is formed into a cylindrical shape that penetrates the water hole (5a) and is inserted into the tubular body (3) so as to be slidable in the vertical direction.

In addition, the spring (6) is connected to the lower end surface of the valve body (5) and the air port (4).
Further below, a spring receiver stepped on the inner circumferential surface of the tubular body (3) is elastically loaded across the portion (3a) and pushes the valve body (5) upwardly from the air port (4).

The vacuum breaker valve (B4) of this embodiment has a tubular body (3
), the upper end surface of the valve body (5) receives the pressure of the flowing water, and this pressure causes the valve body (5) to slide downward against the spring (6), causing air to flow through its circumferential surface. Close your mouth (4).

The drainage equipment (C) is attached to the drain opening (A3) opened on the bottom wall (A2) of the tank (Δ), and is installed on the base (
11) and the operating rod (12).
) and a drain valve body (12a) provided at the lower end of the drain valve (C+).

The base (11) is made of synthetic resin such as ABS resin and has a substantially cylindrical shape, and has an annular drain valve seat (IIA) protruding from the inner periphery of the lower end, and a plurality of through holes (IIB>) on the periphery of the lower end. A drainage tube (11c) is integrally provided on the lower end surface of the tank (A>), which is inserted through the bottom wall (A2) and fixed to the bottom wall (A2).

The drain pipe (11c) is made of metal such as brass and has a substantially cylindrical shape, and an outer pipe (13) having a diameter larger than the outer diameter of the base (11) is removably attached to the outer peripheral surface of the upper end of the drain pipe (11c) for cleaning. The amount of water can be adjusted, and a hot water pipe (14) connected to the urinal (D) is connected to the lower end.

Furthermore, a frame body (15) made of synthetic resin such as ABS resin and formed into a cylindrical shape having an outer diameter smaller than the inner diameter of the outer cylinder (13) is attached to the upper outer peripheral surface of the base (11). A passage (13a) is formed between the frame (15) and the outer cylinder (13).

The frame (15) has an upper cylindrical part (15a), a column part (15b), and a lower cylindrical part (15c) continuous from above by cutting out the middle part of the frame body (15) so as to face each other. The lower cylindrical portion (15c) has its lower end inner circumferential surface screwed onto the upper outer circumferential surface of the base (11), and the container (16) is fitted therein.

The container (16) has a double inner and outer cylindrical wall (16a) and an outer cylindrical wall (16b) made of synthetic resin such as polypropylene.
) and a bottom wall (16c) connecting the lower parts of these inner and outer walls (16a) (16b), and the cylindrical outer wall (16c).
The lower end of 16b) is fitted and fixed to the upper end of the base (11), and a small drainage passage (16d) in the form of a small hole is bored in the bottom wall (16c). A float chamber (16e) formed between the inner and outer walls (16a) (16b) of the cylinder via the space (16e) formed inside the base (11)
11d).

Then, inside the chamber (16e) for the flow 1, there is an annular hollow float (17) whose inner diameter is larger than the cylindrical inner wall (16a) and whose outer diameter is smaller than that of the cylindrical outer wall (i6b).
is housed and arranged, and an operating rod (
12) is slidably guided and inserted.

The buoyancy of the float (17) is slightly larger than the downward force exerted on the operating rod (12) when the drain valve (C1) is open, but when the drain valve (C1) is closed,
The water pressure applied to a) is set to be smaller than the downward force applied to the operating rod (12).

The operating rod (12) is a cylindrical body made of synthetic resin such as ABS resin, which functions as an overflow pipe, and has a drain valve body (12a) formed into a disc shape from an elastic sheet material such as rubber at its lower end. ) is integrally provided within the valve body (12a), and the valve body (12a)
corresponds to the drain valve seat (11a) of the base (11),
Both of these constitute a drain valve (C7).

In addition, a skirt-shaped stopper (12b) is provided on the outer peripheral surface of the intermediate portion of the operating rod (12) in the float chamber (16e).
), and a cylindrical overflow port (12c) having an inner diameter larger than the inner diameter of the operating rod (12) is fixed to the upper end. 1
A ring (12d) is locked on the inner surface of the intermediate portion of 2c).

The ring (12d) is made of synthetic resin such as polyacetal and has a disk shape, and has a central hole (12e) in the center through which the plunger (18) is inserted, and a plurality of rings around the central hole (12e). In the example, there are four water outlets (12f)...
At the same time, the outer peripheral surface is opened through the above-mentioned overflow port (1).
2G, ) via a retaining ring (12(]), etc.).

The plunger (18) is inserted through the center hole (12e) of the ring (12d') so as to be able to move up and down.
8a) and an electromagnet (2) located inside the support (19).
The upper rod (18b) is linked to the upper rod (18b), and the ends of the rods (18a) and (18b) are fitted into each other and a pivot (18c) is inserted to connect them.

The lower rod (18a) is made of synthetic resin such as polyacetal and has a smaller diameter than the inner diameter of the center hole (12e), and has a flange (18d) projecting from its lower end that has a larger diameter than the inner diameter of the center hole (12e). At the same time, when the 1/1 water valve (C1) is in the closed state, an appropriate distance is provided between the upper surface of the flange (18d) and the lower surface of the ring (12(1)).

The support (one) is formed into a disc shape from synthetic resin such as polyacetal, and its lower outer periphery is fitted into the upper cylindrical part (15a) of the frame (15), and a plurality of screws are inserted from the side. (21)... are fixed by inserting the frame body (15) and screwing them into each other, and a hollow chamber (19a) is provided in the upper center part.

The cavity (19a) is formed with a circular cross section, and has an upper rod (18b) of the plunge p-(18) arranged therein, and has a through hole in its bottom wall through which the lower rod (18a) is vertically slidably inserted. (19b) is opened, and an electromagnet (20) is attached so as to close the -L plane opening.

Further, a cover (19c) covering the electromagnet (20) is attached to the upper outer peripheral surface of the support body (19).

On the other hand, the upper rod (181) of the plunger t--(18))
is formed so as to rise upward when the upper end thereof is inserted into the electromagnet (20) and the electromagnet (20) is energized. In this embodiment, once the electromagnet (20) is energized, Then, the upper limit is configured to be increased by an appropriate period of time, for example, one second.

Then, the above-mentioned empty space (1
By providing an elastic membrane (22) formed of an elastic material such as rubber and having a substantially right bottom cylindrical shape over the inner surface of the electromagnet (20), water and water vapor are prevented from entering the electromagnet (20).

Further, a plurality of screws, four screws (22) in this embodiment, for fixing the support body (19) to the upper cylindrical part (15a) of the frame body (15), and the frame body (15) Lower cylindrical part (1
Stopper ring (23) locked on the upper end surface of 5c)
A laner (24) is placed between the two.

The strainer (24) is a metal mesh made of stainless steel or the like formed into a planar annular shape, and its upper end is connected to the screw (22).
The flange bushings (22a) fixed in the .

The stopper ring (23) is made of synthetic resin such as ABS resin, and has an inner diameter that is approximately the same as the inner diameter of the lower cylindrical portion (15c) of the frame (15), and an outer diameter that is approximately the same as the inner diameter of the strainer (24). It is formed into a cylindrical shape, and the frame body (15
) A pair of openings (
15d) (15d).

The locking flange portions (23a) (23a) protrude inward, respectively.
) is integrally provided, and a locking protrusion (23b) protruding outward from the outer peripheral surface of the lower end is provided over the entire circumference to form a main cross-sectional shape, and furthermore, the planar shape is It is divided into two parts symmetrically, and when installed, the lower surfaces of the locking flange portions (23a) and (23a) are in contact with the upper end surface of the lower cylindrical portion (15c), respectively.

-17-1,.

Therefore, the strainer (24) is screwed (21)...
- Flange bushing (Ila) fixed with... lower surface,
It is sandwiched between the upper surface of the locking protrusion (23b) of the stopper ring (23).

Therefore, the drainage device (C) shown in Fig. 1 is usually closed, and the water level is slightly higher than the upper end of the overflow port (12c) fixed to the upper end of the operating rod (12). It's below.

Now, when the electromagnet (20) is energized, the plunge V-(18
) and the lower rod (18a) are pulled up, and the flange (181) formed at the lower end of the lower rod (18a) is pulled up.
8d) to the ring (12d) and overflow port (12C)
The operating rod (12) is pulled up via the drain valve (C1
) is open, most of the water in the tank (Δ) is drained from the frame (15
) between the lower cylindrical part (150) and the outer cylinder (13) (
13a), 14 units (11) of the through holes (11b), and some of the water flows through the strainer (24), the float chamber (16e), and the drainage small passage (16c) in the bottom wall (16c) of the container (16). 16d) The water is discharged from the internal space (11d, ) of the base (11) to the urinal via the hot water pipe (14) from the drain valve (C1), and the water level begins to drop rapidly. (Fig. 8) Next, when the water level decreases and descends from the lowest opening position of the drainer (24), that is, the top surface of the stopper ring (23), the small drainage passage (16d) becomes smaller than the through hole (11b). Since the water flow area is extremely small, the float chamber (16c
) is slower than the water level in the square portion, and the water level in the float chamber (16e) is always higher than the water level in the other portions. (Figure 9) Then, most of the water in the tank (A) is discharged into the urinal (D), and the water level in the tank (A) except for the float chamber (160) drops to the top of the outer cylinder (13). Even when the specified water mother has been flushed, water still remains in the flow chamber (16c), and the float (17) installed in this float chamber (16e) is in a floating state, so the operation Rod (12
), that is, the drain valve body (12a) is a stopper (12b''
), the float (17) prevents the drain valve (C1) from lowering and maintains the flow valve state. (Fig. 10) After that, the water level in the float chamber (16e) falls due to drainage from the small drainage passageway (16d), and the position of the float (17) lowers, and accordingly, the drainage valve body (12a) moves into the drainage valve. Approach the seat (Ila) and close the drain valve (C1) to complete one drain.

(Fig. 11) In other words, the drain valve (C1) closes with a slight delay after a predetermined amount of water has been drained, and the container (16) and the small drainage passage (1) close.
6d), float (17), stopper (12b)
) constitutes the slow closing means (25) of the drainage device (C).

In this embodiment, the sensing device (E) is used to energize the electromagnet (20) that operates the drainage device (C) as shown in FIG.
The timing is controlled by the control device (F) based on the sensing of the timing.

The sensing device (E) is composed of, for example, a pyroelectric infrared sensor, and is attached to the ceiling of the toilet so that it can detect the use of all the urinals (D) installed in a row.

As shown in the block diagram of FIG. 13, the control device (F) includes a counter control section (Fl) and a timer control section (
F2), and also includes a cleaning switch section (F3) and an equipment protection control section (F4).

The timer control unit (F2) has a first memory circuit (33) that stores the sensing signal of the sensing device (E) taken out through the OR circuit (31) and the gate circuit (32) and operates the T1 timer circuit (34). and the first memory circuit (3
3) operates for T1 time, and when the time is up, outputs a second output signal to the To timer circuit (50), which will be described later.
1 tie Wife timer circuit (34) and To timer circuit (
a first memory reset circuit (35) which receives the signal of (50) and sends a signal to the first memory circuit (33) to erase the memory;
), and an outside temperature correction circuit (36) that sends a signal to change the operating time of the T1 timer circuit (34) according to the room temperature.

The above-mentioned outside temperature correction circuit (36) constitutes a CR timer using, for example, a thermistor and a capacitor, and outside -';'1-+-
- The T1 time is shortened when the temperature is high, and lengthened to 11 hours when the outside temperature is low.In summer, when urine spoils quickly, the T1 time is made to be washed earlier.

Note that 11 hours can be set by adjusting the time as appropriate.

The above relationship between the temperature and the T1 time is arbitrary; it is sufficient that the lower the temperature, the longer the T1 time, and the shorter the temperature, the shorter the T1 time.

Color > 9 ill tft1 section (F+) includes a third memory circuit (37) that stores the above sensing signal taken out through the OR circuit (31) and the gate circuit (32) and starts the T3 timer circuit (38); The signal from the third memory reset circuit (37) operates for T3 hours, and when the time is up, it generates a pulse signal and resets the third memory reset circuit (37).
9), and a third memory reset circuit (39) that receives a pulse signal from the T3 timer circuit (38) and sends a signal to erase the memory of the third memory circuit (37). , the pulse signal emitted by the T3 timer circuit (38) is counted, and when the count reaches a predetermined number set by the counter setting external switch (41), a first output signal is output to the To timer circuit (50). A count circuit (40), a counter setting external switch (41) that sets the count number by operating an external switch, and a counting circuit (40) that receives a signal from
40) counter reset circuit (
42).

The cleaning switch part (F3) is the second memory circuit (44)
When a signal is received from the cleaning switch (43) and the cleaning switch (43), which outputs an operation signal to activate the The second memory circuit (
44) and T upon receiving the signal from the second memory circuit (44).
It operates for 2 hours and when the time has expired, it does not output the signal to activate the second memory reset circuit (46) and the T2 timer circuit (45) receives the signal from the T2 timer circuit (45) and stores it in the second memory circuit (44). and a second memory reset circuit (46) for erasing the memory.

The equipment protection control unit (F4) is a T4 timer circuit (47)
and a T4 timer reset circuit (48).
) starts the To timer circuit (50) and activates the output circuit (51), and the -4 timer reset circuit (48) activates to reset the elapsed time of the T4 timer circuit (47). .

When the To timer circuit (50) times up, the T4 timer reset circuit (48) stops operating and the T4 timer circuit (47) starts.

In other words, the equipment protection control unit (F4) is the long-term urinal (D).
If the urinal (D) is not cleaned, a To timer circuit (50
) to activate the output circuit (51).
The 4-timer circuit (47) is configured to be settable, for example, from 3 hours to 24 hours, and the OR circuit (49), the To timer circuit (50), and the output circuit (51) are connected to the timer control section (F
2), it is shared by the counter control section (F+) and the frame removal switch section (F3).

The To timer circuit (50) is a counter control section (Fl)
, a signal from the timer control section (F2), a signal from the cleaning switch section (F2), and a signal from the equipment protection control section (F4) through the OR circuit (49). The first memory reset circuit (35) outputs a time output signal.
, a third memory reset circuit (39), a counter reset circuit (42) and a T4 timer reset circuit (48).
), and the output circuit (51) amplifies the output signal and energizes the electromagnet (20).

The operation of this control device (F) will be explained below. When the sensing device (E) senses the use of the urinal (D), the sensing signal is sent to the OR circuit (31) and the gate circuit (3).
2) and enters the first memory circuit (33) of the timer control unit (2) and the third memory circuit (37) of the counter control unit (F+), and the first memory circuit (33) is connected to the T1 timer circuit ( 34> is activated.

On the other hand, when the third memory circuit (37) receives the sensing signal, it enters a memorized state and starts a T3 timer circuit (38) which can be set, for example, from 15 seconds to 60 seconds.

When the third memory circuit (37) is in the storage state, it does not receive the sensing signal. T3 timer circuit (38) If the overlap detection prevention time T3 elapses after starting, T3 timer circuit (38)
8) generates a pulse signal in response to a time-up and activates the third memory reset circuit (39) to release the memorized state of the third memory circuit (37), and the third memory circuit (37) generates a new sensing signal. The reception will be accepted.

The counting circuit (40) counts the pulse signals, and when the pulse signals reach a predetermined number (set to 3 in this embodiment) set by the counter setting external switch (41), outputs the first output signal. To timer circuit (50
) and T.

An output is generated from the To time output circuit (51) in which the timer circuit (50) is operating, thereby operating the electromagnet (20).

Further, the counter reset circuit (42) is activated by the operation of the To timer circuit (50), and the count of the counting circuit (40) is returned to O, and at the same time, the first memory reset circuit (35)
operates and erases the memory of the first memory circuit (33) T1
Reset the elapsed time of the timer circuit (34).

Therefore, the To timer circuit (50) and the output circuit (5
1) constitutes an output control section (F5).

The timer control section (2) generates a second output signal in response to a time-up when the count of the counter control section (Fl) does not reach a predetermined number 3 during time T1.

The timer circuit (50) is activated, the counter reset circuit (42) is activated, and the number of drugs in the counting circuit (40) is returned to O, and an output is generated from the output circuit (51).

In addition, when flushing water regardless of the user's detection, such as when cleaning a urinal <D), the cleaning switch section (F
3), turn on the switch (43), and turn on the second memory circuit (
44).

Once the switch (43) is turned on, the second memory circuit (44) memorizes it and starts the T2 timer circuit (45) and also operates the To timer circuit (50), so the To time output circuit (51) is activated and drives the electromagnet (20).

At this time, due to the operation of the To timer circuit (50), T
1 timer circuit (34) elapsed time and counting circuit (40
) are also reset. On the other hand, when the T2 timer circuit (45) times up, it activates the second memory reset circuit (46), erases the memory in the second memory circuit (44), and waits for the next cleaning switch (43) to be turned on.

Therefore, when the first operation signal is generated, the second memory circuit (44) is memorized and cleaning is performed. ), the reception is not attached (pour cleaning is not performed. This 12 hours is temporarily called the prohibition time, and the 12 hours is set to, for example, 10 seconds to 30 seconds. The T2 timer circuit (45) times up, and the second When the memory reset circuit (46) is activated and the memory of the second memory circuit (44) is erased and the rear switch (43) is turned on, cleaning is performed again at that point.

On the other hand, the equipment protection control unit (F3) is activated by using the urinal (D>) or turning on the cleaning switch (43).
T. The timer circuit (50) starts and output circuit (51)
) is activated, the T4 timer reset circuit (48) is activated and the elapsed time of the T4 timer circuit (47) is reset.

When the To timer circuit (50) times up, the T4 timer reset circuit (48) stops operating and the T4 timer circuit (47) starts. Therefore, 14 hours will be tentatively referred to as equipment protection time.

Before the T4 timer circuit (47) times out, the urinal (D) or the cleaning switch (43)
) by adding T. When the timer circuit (50) starts, the T4 timer reset circuit (48) resets the elapsed time of the T4 timer circuit (47), but when the To timer circuit (50) does not start for a long time such as at night, the T4 timer reset circuit (48) resets the elapsed time of the T4 timer circuit (47).
The 4 timer circuit (47) times up and starts the To timer circuit (50), which supplies water to the urinal (D).

At the same time as starting the To timer circuit (50), the T4 timer reset circuit (48) is activated and the T4 timer circuit (48) is activated.
7) elapsed time is reset, and the To timer circuit (5) is reset.
0) stops operating, the T4 timer circuit (47) starts again.
starts.

FIG. 14 shows a time chart of the toilet bowl cleaning device of the refused embodiment.

In addition, in the front claw embodiment, the timing of energization of the electromagnet (20) for operating the drainage device (C) was controlled by the control device (F) based on the detection by the sensing device (D), but the present invention is limited to this. Alternatively, a manual operation switch installed on the side wall of the toilet may be used.

<Effect of the invention> Since the present invention has the configuration described in item 1, it has the following advantages.

■ Shallow water flows from the air port of the vacuum breaker valve, and the water does not fall onto the surface of the stored water in the tank. All water is discharged below the surface of the stored water, so waves do not form on the surface of the stored water, and the water does not fall on the surface of the water stored in the tank. It is quiet and does not cause water hammer due to frequent opening and closing of the valve, and there is no sound of falling water hitting the water surface or collision of the valve body and valve seat due to frequent opening and closing of the valve due to waves. Additionally, once the drain valve is opened, it is maintained in the open state by the float, so a substantially constant amount of water in the tank is always drained into the toilet bowl.

Therefore, the toilet bowl cleaning device of the present invention is free from water surface waves and water discharge noise compared to conventional ones, and can operate reliably.
The cleaning effect is reliable and large.

(2) The opening time of the drain valve can be easily adjusted by adjusting the flow area of the small drainage passage and the volume of the container, which constitute the slow closing means of the drainage device.

■ When the drain valve is opened, the force of the float is activated, and once the drain valve body is raised, the force of the float keeps the valve open, so the electromagnet's energization time is shortened, and the electromagnetic force It only needs to be small, and even a small electromagnet can perform its function satisfactorily.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of a toilet bowl cleaning device showing one embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged sectional view showing main parts of the water supply device, and Fig. 3 (A) is When the air vent is open, Figure 3 (
B) shows the state when the air port is closed, FIG. 4 is a sectional view taken along line (IV)-(IV) in FIG. 3(A), FIG. 5 is a plan view of the valve body of the vacuum breaker valve, and FIG. Figure 6 shows (Vl)=(V
I) Line sectional view, FIG. 7 is a sectional view showing another embodiment of the vacuum breaker valve, FIGS. 8 to 11 are sectional views explaining the operating state of the drainage device, and FIG. 12 is the toilet bowl cleaning according to the present invention. FIG. 13 is a block diagram of a control device, FIG. 14 is a time chart 1-1, and FIG. 15 is a sectional view showing an example of a conventional toilet bowl cleaning device. A... Tank A2... To the bottom wall 3...
Drain port B...Water supply device B1...Valve
B2...Body B3...Water port B
4...Vacuum breaker valve 1...Float 3...
・Tubular body 4...Air port 5...Valve body 5a
...Water port 6...Spring C...Drainage device C1...Drain valve 11a...Drain valve seat
12a... Drain valve body 16... Container
16d... Drainage small passage 17... Float
20... Electromagnet 25... Delayed closing means D
...Toilet bowl Figure 3 (A) □3゜(8
)J JP-A-Sho G1-45033 (11) Figure 4 Figure 6

Claims (1)

[Claims] A tank, a water supply device having a float that is installed in the tank and moves up and down according to fluctuations in the water level in the tank, a valve that opens as the float descends and closes as it rises, and a tank bottom wall. A drain valve is installed at a drain opening opened in 2003 and is connected to a toilet bowl, and is composed of a drain valve seat and a drain valve body that opens and closes this drain valve seat, and a drain valve that is electrically operated to move the drain valve body upward. an electromagnet for opening the drain valve, a container provided above the bottom wall of the tank and having a small drainage passage at the bottom, and a slow closing means comprising a float connected to the drain valve body and disposed within the container. A tubular body whose tip extends to near the bottom of the tank and is open is connected to the outflow port of the main body of the water supply device, and at the midpoint of this tubular body, the water level is above the water level when the tank is full. A vacuum breaker valve is provided at the position, and the vacuum breaker valve connects an air port bored in the middle of the tubular body, and is disposed in the middle of the tubular body so as to be movable in the vertical direction and communicates in the axial direction. It is equipped with a valve body with a water hole and a spring that biases the valve body upward.When water is not flowing, the spring positions the valve body above the air port, and when water is flowing, water force is applied to the valve body. A toilet bowl cleaning device characterized in that a valve body descends against the force of a spring and the air port is closed.