JP2555121B2 - Water supply device with flush valve - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a water supply device equipped with a flush valve that is used by being installed in a flush toilet.

(Prior Art) As a conventional water supply device of this type, until the predetermined time elapses after the user enters the toilet, it is regarded as urination and the flush valve is operated to operate the flush valve. It is possible to set the amount of water supplied per unit time to a small amount, and after the lapse of the predetermined time, consider it as the use of stool and set the amount of water supplied per unit time to a large amount to save water when using urine. The one configured so that it is possible is proposed.

(Problems to be Solved by the Invention) However, in this conventional device, the setting change of the water supply amount causes a restriction member that restricts the open position of the opening / closing valve body of the flash valve to move based on the rotation of the pulse motor. The movement position of the regulating member is set only by the rotation amount of the pulse motor, so if there is a power outage or the power is accidentally turned off while changing the water supply amount setting, Not only is there a problem that the amount of water supply is not accurately set to a small or large state even if the power is turned on again after that, there is a slight error in the rotation of the pulse motor or the mechanism that counts it. However, there was a problem that the required amount of water supply could not be obtained if water was accumulated many times.

The present invention has been made by paying attention to the problems in the conventional technology as described above, and an object thereof is to cause a power failure or an unprepared power supply while changing the setting of the water supply amount of the flash valve. Even if it is cut off, if the power is turned on after that, the water supply amount can always be set accurately in the small or large state to obtain the required water supply amount, and it can be used many times. Even so, it is to propose a water supply device that can always obtain a required water supply amount as described above without accumulating errors.

(Means for Solving the Problems) In order to achieve the above object, in the water supply device of the present invention, a regulation for regulating the amount of water supply after the user exits the toilet or when the power is turned on. The member is once arranged at the reference position and then moved to a small restriction position.

(Operation) In the water supply device configured as described above, the regulating member is once returned to the reference set point when a power failure occurs, the power is carelessly turned off, or the user leaves the toilet. Therefore, the amount of water supply is always set with the reference position as the base point, and the amount of water supply is accurately set to small or large.

(Embodiment) Hereinafter, one embodiment of a water supply device embodying the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the flush valve 1 has a connecting pipe 2
Also, it is connected to the water pipe 4 via the water shutoff valve 3 and to the toilet bowl (not shown) via the discharge pipe 5. A cap-shaped guide member 7 is screwed onto an upper portion of a casing 6 of the flash valve 1, and a piston valve 8 as a valve body is housed therein so as to be vertically movable.

Then, in a normal time when water does not flow in the toilet bowl, the piston valve 8 is arranged in the downward movement position, and the flange portion 9 thereof abuts the valve seat 10 to close the discharge port 11. Further, at this time, the water in the casing 6 flows into the upper valve chamber 14 through the strainer 12 and the small hole 13, and the water pressure thereof pushes the operator 15 incorporated in the piston valve 8 downward, and the upper end thereof. The inner valve seat 17 is closed by the valve plate 16 of the above.

The handle 18 is provided on the side of the casing 6, and when the handle 18 is operated to flow water to the toilet bowl, the engaging rod 19 projects inward against the action of the spring 20 and the actuator 15
Engage with. As a result, the actuator 15 is tilted against the action of the spring 21, and the valve plate 16 thereof is separated from the inner valve seat 17.
Then, the water in the upper valve chamber 14 passes through the piston valve 8 and flows downward, and the water pressure in the upper valve chamber 14 decreases. Therefore, the piston valve 8 is raised by the water pressure in the casing 6, and the flange portion 9 Is separated from the valve seat 10 and the discharge port 11 is opened. Therefore, the water flows out all at once through the outlet 11 and the outlet pipe 5 into the toilet bowl.

Even during this water supply, the water in the casing 6 flows into the upper valve chamber 14 through the strainer 12 and the small holes 13. When the upper valve chamber 14 is filled with water, the piston valve 8 is moved downward again by the water pressure from above, the discharge port 11 is closed by the flange 9 and the water supply to the toilet is stopped.

The screw cylinder 22 is provided at the center of the upper surface of the guide member 7,
A support plate 23 is screwed onto the screw cylinder 22 and the washer 2
The support cylinder 26 is screwed through 4,25. An elevating shaft 27 as a restricting member is rotatably and elevatably supported in a support cylinder 26 via a bearing 28, and a lower end of the elevating shaft 27 is screwed into the guide member 7 and protrudes into the upper valve chamber 14 with a screw portion 29. And a driven gear 30 is provided at the upper end.

A pulse motor 31 as a drive member is mounted on the support plate 23, and its motor shaft is provided with a drive gear 32 that meshes with a driven gear 30. Then, as the pulse motor 31 rotates, the lifting shaft 27 is passed through the drive gear 32 and the driven gear 30.
Is rotated, and the raising and lowering shaft 27 is lifted and lowered by the action of the screw portion 29 in three positions of the small regulating position P1 and the large regulating position P2 which regulate the upward movement position of the piston valve 8 and the reference position P3.

The reference position detection sensor 33 is mounted on the pulse motor 31 via the support member 34, and when the up-and-down shaft 27 is lowered to the reference position P3 together with the driven gear 30, the sensor 33 outputs a detection signal. The cover 35 is mounted on the support plate 23, and the cover 35 covers various members such as the pulse motor 31.

Next, the control circuit configuration of the water supply device configured as described above will be described based on FIG.

A central processing unit (CPU) 41 forming the first and second control means includes a timer circuit 41a, and the CPU 41 has a read-only memory (ROM) 42 storing a program for controlling the operation of the entire device, Further, a readable / writable memory (RAM) 43 for temporarily storing the calculation result is connected.

In the CPU 41, a reference position detection sensor 33, a first rotary DIP switch 44 for setting the number of drive pulses of the pulse motor 31 required to raise the lifting shaft 27 from the reference position P3 to the small regulation position P1, and a lifting shaft 27. Pulse motor 31 required to raise the small regulation position P1 to the large regulation position P2
Second rotary dip switch 45 for setting the number of drive pulses of the, a changeover switch 46 for switching the water supply device between the operating state and the test state, and a door provided as a detection means for confirming entry into the toilet door The switch 47 is connected, and various signals are input to the CPU 41 from them.
Further, the pulse motor 31 and an alarm lamp 48 for abnormality alarm are connected to the CPU 41 via drive circuits 49, 50, and the CPU 41 outputs a drive or stop signal to them.

Next, the operation of the water supply device configured as described above will be described in Section 3a.
Referring to FIG. 3, FIG. 3b and FIG.

Now, when the power switch (not shown) is turned on, the CPU4
Under the control of 1, the operation of the flowcharts shown in FIGS. 3a and 3b is started, and first, in step 1 (hereinafter, the step is simply represented by S), the memory and the like are initialized. next
In S2, the timer circuit 41a starts measuring a predetermined time T1 (20 seconds in the embodiment), and in S3, the pulse motor 31 is rotated in the reverse direction and the elevating shaft 27 begins to descend. Then, in S4, S5 it is determined whether or not a detection signal is output from the reference position detection sensor 33 before the predetermined time T1 elapses, and if the detection signal is not output even after the predetermined time T1 elapses, Assuming that the lifting shaft 27 is not lowered to the reference position P3 due to freezing or mixing of foreign matter, the measurement operation based on the timer circuit and the reverse rotation operation of the pulse motor 31 are stopped in S6 and S7, and then the alarm lap 48 in S8. Is lit and an abnormality is reported.

On the other hand, when the vertical axis 27 is normally lowered to the reference position P3 with the reverse rotation of the pulse motor 31, and the detection signal is output from the reference position detection sensor 33 before the predetermined time T1 has elapsed in the determination of S3 and S5, In S9 and S10, the reverse rotation operation of the pulse motor 31 and the measurement operation based on the timer circuit are stopped. After that, in S11, the preset drive pulse number is read by the first rotary DIP switch 44, and in S12, the pulse motor 31 is rotated in the normal direction and the elevating shaft 27 starts to be lifted from the reference position P3. In the next S13, it is determined whether or not the pulse motor 31 has been normally rotated by the set number of drive pulses, and when the lifting shaft 27 reaches the small regulation position P1 based on the rotation of the pulse motor 31 by a predetermined amount, the pulse motor is rotated in S14. The forward rotation operation of 31 is stopped. Therefore, in the water supply device of this embodiment, when the power switch is turned on, the elevating shaft 27 for restricting the upward movement position of the piston valve 8 is once returned to the reference position P3 and then reset to the small restriction position P1. To be done.

In this state, in S15, it is determined whether the changeover switch 46 is switched to the driving side or the test side, and if it is switched to the driving side, in S16, wait for the toilet door switch 47 to be turned on. . When a user enters the toilet and the door switch 47 is turned on (M1 point in FIG. 4),
At S17, the timer circuit 41a causes the predetermined time T2 (120 in the embodiment).
Second) is started, and thereafter, in S18, S19, and S20, the on state of the door switch 47 is confirmed, the elapse of a predetermined time T2 is determined, and the switching state of the changeover switch 46 is confirmed.

Then, before the elapse of the predetermined time T2, the door switch 47
If is turned off, the program returns from S18 to S15. Therefore, the elevating shaft 27 is set to the small regulation position P1 until the predetermined time T2 elapses after entering the toilet,
In this state, the piston valve 8 is operated based on the operation of the handle 18.
Is moved upwards and the toilet bowl is filled with water,
The upward movement of the piston valve 8 is restricted by the engagement with the lifting shaft 27 at the small restriction position P1, and the amount of water supply per unit time becomes small. As described above, the elevating shaft 27 is set to the small regulation position P1 until the toilet is used longer than the predetermined time T2 in the subsequent use of the toilet.

On the other hand, when a predetermined time T2 has elapsed after entering the toilet (point M2 in FIG. 4), the measurement operation based on the timer circuit 41a is stopped in S21, and then preset by the second rotary dip switch 45 in S22. While the number of drive pulses being read is read, the pulse motor 31 is normally rotated in S23, and the lift shaft 27 starts to be lifted from the small regulation position P1. At the next steps S24 and S25, it is determined whether or not the pulse motor 31 is normally rotated by the set number of drive pulses, and it is confirmed whether or not the door switch 47 is continuously turned on.
When the elevating shaft 27 reaches the large restriction position P2 based on the predetermined amount of rotation (point M3 in FIG. 4), the forward rotation operation of the pulse motor 31 is stopped in S26. Therefore, when water is supplied to the toilet bowl based on the operation of the handle 18 in this state, the upward opening movement of the piston valve 8 is restricted by the elevating shaft 27 at the large restriction position P2, and the per unit time is reduced. The water supply becomes large.

Then, in the next S27, it is determined whether or not the pulse motor 31 is rotated by the set number of pulses, and
In S28, waiting for the door switch 47 to turn off due to leaving the toilet, if the pulse motor 31 is not rotated by the set number of pulses or if the door switch 47 is turned off due to leaving the room (M4 point in Fig. 4) Return to S1. Therefore, the operations from S1 to S14 are re-executed, the elevator shaft 27 moves to the reference point P3 side by the reverse rotation start of the pulse motor 31 in S3, and the pulse motor 31 stops in S9 by the detection of the sensor 33 in S5. The lifting shaft 27 is stopped at the reference position P3 (point M5 in FIG. 4). Immediately in S12, the forward rotation of the pulse motor 31 is started and the lifting shaft 27 is moved to the small regulation position P1.
To the small regulation position P1 (M6 in Fig. 4
Point), the pulse motor 31 is stopped at S14, the lifting shaft 27 is stopped at that position, and the operation of the changeover switch 46 or the ON operation of the door switch 47 associated with entering the toilet is awaited.

As described above, in this water supply device, the lifting shaft 27 for determining the water supply amount is once arranged at the reference position P3 at the time of turning on the power and after the user leaves the toilet after the elapse of the predetermined time T2. It is moved to the regulation position P1.

Therefore, when using urine, only a small set amount of water is supplied, so not only can water be saved, but even if the power is turned off carelessly or if water is used many times, small and large regulations are always maintained. The position is set accurately so that the required amount of water can be supplied at all times.

Further, in the water supply device of the present embodiment, the initialization is performed based on the leaving of the user after the elapse of the predetermined time T2, but the initialization based on the leaving of the user within the predetermined time T2 may be added. Good. In this case, the small and large regulation positions can be held more accurately. Furthermore, a predetermined time
The initialization may be performed based on the exit from the room before the start of counting T2.

If the changeover switch 46 is set to the test side in the determination of S15, the program is S16 to S16.
Avoid 20 and proceed to S21. Therefore, at the time of switching on the test side, the pulse motor 31 is normally rotated without waiting for the elapse of the predetermined time T2 (120 seconds), the lifting shaft 27 is moved from the small regulation position P1 to the large regulation position P2, and the entire operation is performed. The time can be shortened and the test can be performed efficiently.

(Effects of the Invention) As described above, according to the present invention, it is possible to always supply a large or small required amount of water even when a power failure occurs, the power source is cut off carelessly, or a large number of times are used. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a water supply device embodying the present invention, FIG. 2 is a block diagram of its control circuit, and FIGS. 3a and 3b are flow charts for explaining the operation. The figure is a diagram showing the order of movement of the lifting members. 1 ... Flash valve, 8 ... Piston valve as valve body, 27 ... Elevating shaft as regulating member, 31 ... Pulse motor as driving member, 41 ... CPU as first and second control means, 47 …… Door switch as detection means, P1…
… Small regulation position, P3 …… Reference position.

Claims (1)

(57) [Claims] 1. A water supply device comprising a flush valve (1) for supplying water to a toilet bowl, wherein the flush valve (1) is provided with a reference position (P).
A regulating member (2) that is movable based on 3) and regulates the amount of water supply with opening of the valve body (8) according to the amount of movement.
7) and a drive member (31) for moving the regulating member (27)
And a detection means (4) for detecting that the user has entered the toilet.
7), so that the water supply amount is small until a predetermined time elapses after the user enters the toilet and the water supply amount is increased after the predetermined time elapses. The first control means (41) for controlling the operation of 31), and after the user leaves the toilet and when the power is turned on,
Second control means (41) for controlling the operation of the drive member (31) so that the restriction member (27) is once arranged at the reference position (P3) and then moved to the small restriction position (P1). A water supply device equipped with a flush valve.