JP2585367B2 - Flush toilet water saving device - Google Patents

Description

The present invention relates to a water-saving device for a flush toilet.

[Prior Art] A flush valve shown in FIG. 5 is conventionally used as a water discharge device in a flush toilet. The flush valve 1 is connected to a water pipe 4 via a connection pipe 2 and a water stop valve 3, and is connected to a toilet (not shown) via a discharge pipe 5. The piston valve 6 is housed in the casing 21 of the flash valve 1 so as to be vertically movable.

When water is not to flow into the toilet, the piston valve 6 is located at the lower position, the flange portion 7 abuts the valve seat 8 and the discharge port 9 is closed. At this time, the water in the casing 21 flows into the upper valve chamber 12 through the strainer 10 and the small hole 11, and the hydraulic pressure presses the actuator 13 provided in the piston valve 6 downward. The inner valve seat 15 is closed by the plate 14.

In this state, the handle 16 is used to flush the toilet bowl with water.
Is operated, the engaging rod 17 projects inward against the spring 18 and engages with the actuator 13. As a result, the actuator 13 is
The valve plate 14 is tilted against the action of 19, and the valve plate 14 is separated from the inner valve seat 15. Then, the water in the upper valve chamber 12 flows downward through the piston valve 6 and the water pressure in the upper valve chamber 12 decreases, so that the piston valve 6 is raised by the water pressure in the casing 21 and its flange 7 Is separated from the valve seat 8, and the discharge port 9 is opened. Therefore, the water flows out to the toilet at a stretch via the discharge port 9 and the discharge pipe 5.

In this case, the water supply amount of the flash valve 1 is
The adjustment is performed by restricting the upward movement position of the piston valve 6 by screwing or unscrewing the adjustment screw 20 at the upper end of the piston 22. When the water is supplied, the water in the casing 21 flows into the upper valve chamber 12. When the water becomes full, the piston valve 6 moves downward again by the water pressure from above, and the discharge port 9 is moved by the flange 7. The toilet is closed and the water supply to the toilet is stopped.

[Problems to be Solved by the Invention] However, in the above-described conventional flash valve 1, once the water supply amount is set by operating the adjustment screw 20, the operation of the handle 16 is performed both when using the stool and when using the urinal. Unless the amount is changed, the same set amount of water is supplied, so that even when urine is used, more water than necessary for stool flow is wasted.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a water discharging means for discharging water into a toilet bowl by applying an operating force from the outside, and an operating force for the water discharging means. Operating force applying means for applying, control means for driving and controlling the operating force applying means, detecting means for detecting the use of the user, and the use time after the use of the user is detected by the detecting means. Measuring means for measuring, and judging means for judging whether the use state of the user is small or large based on the time measured by the measuring means, wherein the control means comprises: The driving time of the operating force applying means is changed based on the result of the determination.

[Operation] When the use state of the user is detected by the detection means, the use time is measured by the measurement means. Then, based on the time measured by the measuring means, the determining means determines whether the use state of the user is small or heavy. The control unit changes the application time of the operating force applied from the operating force applying unit to the water discharging unit based on the determination result of the determining unit.

That is, when the determination result of the determination means is determined to be small, the control means shortens the drive time of the operation force applying means to reduce the amount of water discharged from the water discharge means. On the other hand, when it is determined that the result of the determination by the determining means is large, the control means increases the amount of water discharged from the discharging means by increasing the driving time of the operating force applying means.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the flush valve 1, the connecting pipe 2, the water shutoff valve 3, and the flash valve 1 shown in FIG.
Since they are embodied using the water pipe 4, detailed description thereof will be omitted, and the same reference numerals will be used.

As shown in FIG. 1, a main body case 61 of an automatic handle device 60 as an operating force applying means is disposed above a handle 16 of the flash valve 1 as a water discharging means. A screw hole 62 is formed at a position corresponding to the handle 16 on the lower surface of the main body case 61, and a driving rod 63 is screwed into the screw hole 62. An operating member 64 is attached to the lower end of the driving rod 63, and a driven gear 65 that rotates integrally with the driving rod 63 is supported on the upper end of the driving rod 63. Further, a motor 67 is disposed in the main body case 61, and a drive gear 66 meshing with the driven gear 65 is supported on an output shaft thereof.
The motor 67 is a limit switch (not shown here) as a detecting means that operates in accordance with opening and closing of a flush toilet door.
Rotates forward or backward based on the on / off state of.

When the motor 67 rotates forward, the driving rod 63 is rotated via the gears 66 and 65, and the driving rod for the main body case 61 is rotated.
The protrusion amount of 63 increases. That is, when the motor 67 rotates forward, the operating member 64 is lowered from the state shown in FIG. 1, and as shown in FIG. 2, the handle 16 is pushed down by the operating member 64, and the handle 16 is held at the water discharging position. It has become. When the motor 67 rotates in the reverse direction from the state shown in FIG. 2, the operation member 64 is raised, and the position of the handle 16 returns to the non-water discharge position shown in FIG.

Next, the electrical configuration of this embodiment will be described with reference to the block diagram of FIG.

A limit switch 70 is connected to the CPU 50 as the determination means and the control means. The limit switch 70 outputs an ON signal to the CPU 50 when the flush toilet door is opened. Further, the motor 67 is connected to the CPU 50 via a drive circuit 54. The CPU 50 controls the drive of the motor 67 based on a program stored in the ROM 52 and a calculation result stored in the RAM 53.

Next, the operation executed by the CPU 50 will be described based on the flowchart of FIG.

First, in step 101, when the CPU 50 determines that the limit switch 70 has been turned on, the CPU 50 proceeds to step 102 and starts time measurement by a timer built therein.
In step 103, a predetermined time (for example, 120 seconds) can be set from the start of the time measurement. This 120 seconds is required from the time when the user starts using the toilet to the time when the stool ends in normal use. Time) has elapsed. Here, when it is determined that 120 seconds have not elapsed, the process proceeds to step 104, where it is again determined whether or not the limit switch 70 has been turned on. Move to step 105. On the other hand, when it is determined that the switch has not been turned on, the process returns to step 103. In step 105, the motor 67 is rotated forward, the handle 16 of the flash valve 1 is pushed down by the operating member 64, and the handle 16 is held at the water discharge position in FIG. CPU5
0 is a predetermined time after the handle 16 is depressed (for example, 3 seconds, which is equivalent to discharging an amount of water capable of discharging urine in the toilet).
After the lapse of time, the motor 67 is rotated in the reverse direction to return the handle 16 to the non-water discharging position in FIG.

On the other hand, when it is determined in step 103 that 120 seconds have elapsed, the process proceeds to step 106, where the limit switch 7 is again turned on.
It is determined whether 0 is turned on. Where limit switch 7
When it is determined that “0” is turned on, it is determined that it is important, and the process proceeds to step 107. If it is determined that the switch has not been turned on, the process returns to step 103. In step 107, the motor 67 is rotated forward, the handle 16 of the flash valve 1 is pushed down by the operating member 64, and the handle 16 is held at the water discharge position in FIG. After a predetermined period of time (for example, 6 seconds for discharging the amount of water capable of draining the stool in the toilet) has elapsed after the CPU 16 has pressed down the handle 16, the motor 67 is rotated in the reverse direction to return the handle 16 to the non-water discharge position in FIG. Let it.

That is, when the user opens the door after use and leaves the room, the limit switch is turned on at the same time as the door is opened, the motor 67 is driven to rotate forward and the driving gear 66 and the driven gear 65 are driven.
Is rotated. Then, the drive rod 63 is screwed into the screw hole 62 and descends, and the operation member 64 presses the handle 16. afterwards,
When the water discharge ends, the motor 67 is driven to rotate in the reverse direction, and the drive rod 63 returns to the initial position.

As a switch for the motor 67, a touch switch that is turned on when pressed by a user may be used, or an infrared sensor, a proximity sensor, or the like may be used. In the present embodiment, the automatic handle operation device 60 is mounted outside the existing flash valve 1 and the handle 16 of the flash valve 1 is mounted.
An operating force is applied from the automatic steering wheel operating device 60 to the vehicle, and the application time is configured to be different between the small use and the large use. As a result, the automatic flushing function can be easily added without changing the configuration of the existing flash valve 1, and the amount of water discharge for small and large uses can be adjusted. And cost can be reduced. In addition, the device 60 can be externally attached to the existing flash valve 1 or can be easily attached, and the cost can be further reduced.

Instead of using the motor 67 and the driving rod 63, the handle 16 may be operated by a plunger of a solenoid.

[Effects of the Invention] As described in detail above, according to the present invention, the amount of water discharged to the toilet during stool and urination is automatically adjusted, so that more water flows than necessary when urine is frequently used. It has an excellent effect of saving water without waste. Further, by changing the application time of the operating force applied to the water discharging means to change the amount of water discharged during small use and the amount of water discharged during large use, without using a complicated electric circuit or the like. This has an excellent effect that the amount of discharged water can be adjusted. Also, by changing the application time of the external operating force, the amount of water discharged can be changed, so that the device can be easily retrofitted to the existing water discharging means, and the existing water discharging means can be effectively used, and further improved. An excellent effect that cost can be reduced can be achieved.

[Brief description of the drawings]

FIG. 1 is a partial front sectional view of a flash valve and a handle operating device according to an embodiment of the present invention, and FIG.
FIG. 3 is a partial front sectional view of the flash valve and the handle operating device in a state where the handle is pushed down from the state of FIG. 3, FIG. 3 is an electric block diagram showing an electric configuration, FIG. 4 is a flowchart, and FIG. It is sectional drawing of a flash valve. Water discharging means ... 1, control means, measuring means, determining means ... 5
0, operating force applying means ... 60, detecting means ... 70.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-233240 (JP, A) JP-A-62-146330 (JP, A) JP-A-57-143026 (JP, A) 160241 (JP, U)

Claims (1)

(57) [Claims] (1) When an operating force is applied from the outside,
A water discharging means for discharging water into the toilet, an operating force applying means for applying an operating force to the water discharging means, a control means for driving and controlling the operating force applying means, a detecting means for detecting use by a user, Measuring means for measuring the use time after the use of the user is detected by the detecting means; and, based on the time measured by the measuring means, whether the use state of the user is small or large. A control unit that changes a driving time of the operating force applying unit based on a result of the determination by the determining unit.