JPH03119229A - Opening and closing structure of flap valve in simplified flush toilet - Google Patents

Abstract

PURPOSE:To easily open and close a flap valve with a simple switch operation, by arranging an air-cylinder driving to close a flap valve against a spring of the flap valve, in the neighborhood of a discharge outlet. CONSTITUTION:An air-cylinder 16 driving to close a flap valve 16 against a spring of the valve at a discharging outlet 5 connecting to the bottom of a toilet bowl 3 is arranged in the neighborhood of the discharge outlet 5. When a flushing button 17a is pushed, the toilet bowl 3 is washed and a valve link is drawn against the spring of the flap valve to open the flap valve 6 by the actuation of the air-cylinder. When excrements and washing water are discharged, the air chamber 31 of a diaphragm pump 10 is connected to an exhaust air pipe to discharge the air of the air-chamber 31 by the actuation of a change- over switch and then the diaphragm 11 is returned by a spring 33. In this way, the flap valve can be easily opened and closed not by a pedal operation but by a simple switch operation.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an opening/closing mechanism for a flap valve at the outlet of a so-called simple flush toilet, which is a flush toilet that cleans and discharges waste from the toilet bowl with a small amount of water. It is.

[Conventional technology]

Typical flap valve opening/closing mechanisms for conventional simple flush toilets include those shown in FIG. 4 and FIG. 6, for example. The simple flush toilet shown in Fig. 4 uses the force of the drop between the water level of the flush water 2 in the water tank 1 and the discharge nozzle 4 of the toilet bowl 3 to circulate the flush water 2 into the toilet bowl 3 to wash and discharge waste. It is. A flap valve 6 is pivotally connected to the outlet 5 at the bottom of the toilet bowl 3 by a pivot shaft 7, so that it can be opened and closed freely.
Alternatively, the flap valve 6 is closed by biasing it with the balance weight 9. This is a gravity opening/closing method, and when dirt is placed on the flap valve 6 during toileting or when washing water 2 accumulates during washing, the weight changes from the state shown in Fig. 5 (a) to the state shown in Fig. 5 (c). The flap valve 6 opens as in the state shown in FIG. In addition, the simple flush toilet shown in Figure 6 has a diaphragm pump l for discharging flush water.
When the diaphragm 11 of O is pushed by an external force, the cleaning water 2 in the diaphragm pump 10 is pressurized, and a fixed amount of cleaning water 5 is discharged from the discharge nozzle 2 to perform cleaning. An arm 12 extending from a pivot shaft 7 of the flap valve 6 and a pedal 13 are connected by a valve link 14, and biased by a flap valve spring in a direction in which the flap valve 6 is closed. This is a manual forced opening/closing system, and when washing after using the toilet, by manually operating the pedal 13, the washing water 2 is discharged simultaneously from the state shown in Fig. 7 (a) to the state shown in Fig. 7 Φ). Flap valve 6 opens,
The filth and wash water 2 are discharged, and the flap valve 6 is closed again. When only the flushing water discharge operation is performed, the flushing water 2 is pumped into the toilet bowl 3 by the pressing force that closes the flap valve 6.
It can be stored at the bottom of the tank.

[Problem to be solved by the invention]

In the former of the above conventional examples, no special operation is required because the flap valve 6 automatically opens and closes depending on the weight of the dirt or the washing water 2, but the flap valve 6 automatically opens and closes depending on the weight of the dirt or the washing water 2. Therefore, the force with which the flap valve 6 is pressed against the discharge port 5 is weak, and the flush water 2 cannot be stored at the bottom of the toilet bowl 3. Therefore, the wash water 2 cannot be stored at the bottom of the toilet bowl 3 during defecation, and therefore cannot be used while being left at the bottom of the toilet bowl 3 during defecation, so the toilet bowl 3 and flap valve 9 are likely to get dirty.

In addition, in the latter of the above conventional examples, the wash water 2 can be stored in the toilet bowl 3, and the adhesion of dirt to the toilet bowl 3 and the flap valve 6 can be extremely reduced. This requires the effort and effort of operating the pedal 13 with the same force.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to be able to collect flush water in the toilet bowl using the manual forced opening/closing method described above, and to prevent waste from entering the toilet bowl or the flap valve. To provide a flap valve opening/closing mechanism for a simple flush toilet, which can easily open the flap valve by eliminating the conventional pedal operation while taking advantage of the feature that adhesion can be extremely reduced.

[Means to solve the problem]

In order to achieve the above object, the flap valve opening/closing mechanism in the flush toilet of the present invention is such that an air cylinder is disposed near the discharge port to drive the flap valve 6 to close against the flap valve spring. [Embodiment] As shown in FIG. 1, the toilet bowl A has a toilet bowl 3, and a toilet lid 19 is provided on the top surface of the toilet bowl 3 so as to be openable and closable via a toilet seat 18 that can freely rotate up and down. A discharge port 5 is provided at the bottom of the toilet bowl 3, and a discharge port 5 is provided below the discharge port 5.
The discharge tube 20 is connected so as to communicate with the discharge tube 20. Discharge pipe 2
A flap valve 6 for opening and closing the discharge port 5 is disposed in the interior of the valve 0, and a pivot shaft 7 integrally provided at the end of the flap valve 6 is rotatably mounted. The arm 12 is extended in a direction perpendicular to the axis 7. An air cylinder 16 is disposed near the discharge port 5, and the pressurized and held air in the pressurized tank 36 is introduced into the air cylinder 16 through the air cylinder check valve 41 and the switching valve 39. , presses the air cylinder 16 to open and close the flap valve 6. The flap valve 6 is always connected to the air cylinder 1.
6, and closes the flap valve 6 with a predetermined force.

When draining water, the air cylinder 1 is
The pressurized air in 6 is exhausted from the exhaust port, and the flap valve 6 is opened by the force of the flap valve spring 22.

Further, a flap valve spring 22 made of a tension spring is installed between the tip of the arm 12 and the inside of the drain pipe 20.
The flap valve 6 is moved in the direction of closing the discharge port 5 with the flap valve 6.
It is energized. The air cylinder 16 is operated by a remote control operation switch section 17 via a remote control line 23, so that the flap valve 6 can be opened and closed by remote control operation. A water tank 1 is arranged at the rear upper part of the toilet bowl A, and the water tank 1 has a hand washing part 24 and a pole tap 25.

An overflow pipe 26 is introduced into the water tank 1 from the bottom of the water tank 1, and a diaphragm pump 1O is arranged at the bottom of the toilet bowl A, which is designed to discharge the flushing water 2 that overflows from the water tank 1. The water chamber 27 of the diaphragm pump 1o and the inside of the water tank 1 are communicated through a wash water supply pipe 28. There is a siphon-shaped suction part 29 on the inside of the water tank 1 of the cleaning water supply pipe 28.
A discharge nozzle 4 is provided at the top of the toilet bowl 3,
The water chamber 27 of the diaphragm pump 10 and the discharge nozzle 4 are connected by a wash water discharge pipe 30.

The diaphragm pump 10 has an interior partitioned into two chambers by a diaphragm 11 to form a water chamber 27 and an air chamber 31. A center plate 3 is located in the center of the diaphragm 11.
2 is attached, and the diaphragm 11 is biased by a diaphragm spring 33 so that the air chamber 31 of the diaphragm 11 is bent. A check valve 34 is provided at the connection portion of the diaphragm pump 10 with the wash water supply pipe 28 and the wash water discharge pipe 30, and a check valve 34 is provided at the bottom of the toilet bowl A for pressurizing the tank adjacent to the diaphragm pump IO. An air pump 35 and a pressurized tank 36 for storing pressurized air are arranged.

Air is pressurized and held in the pressurized tank 36 by the air pump 35 through the check valve air pump 37. The air pump check valve 37 prevents the air in the pressurized tank 36 from flowing back into the pump. In the pressurized tank 36,
A pressure switch 38 is provided, and when it detects that the air in the pressurized tank 36 falls below a certain pressure, it operates the tank pressurizing air pump 35. That is, the air pump for pressurizing the tank is activated when the flap is activated, when the air in the pressurized tank is blown out, and when the pressure in the pressurized tank is reduced due to long-term retention of air in the pressurized tank.

Next, the operation of flushing the toilet bowl 3 after using the toilet will be explained.

In the diaphragm pump 10, since air is normally not supplied to the air chamber 31, the diaphragm 11 is bent by the diaphragm spring 33, and water is sucked into the water chamber 27 from the cleaning water supply pipe 28. It is filled with cleaning water 2. Now, when the cleaning equipment 17a is operated using the operation switch section 17, the pressurized tank 36 and the diaphragm pump lO are communicated with each other through the switching valve, and air is supplied from the pressurized tank 36 to the air chamber 31 of the diaphragm pump 10 at a constant pressure. The diaphragm 11 of the diaphragm pump 10 is pushed by air, and the wash water 2 in the water chamber 27 of the diaphragm pump 10 is sent out, and the wash water 2 is discharged from the discharge nozzle 4 through the wash water discharge pipe 30, and the wash water 2 is discharged from the discharge nozzle 4 to the toilet bowl. The inside of the bowl 3 is cleaned.

At this time, the air cylinder 16 is driven by operating the cleaning type 17a of the operation switch section 17, and the valve link 1
4 is pulled against the flap valve spring 22, and the arm I2
rotates, the pivot shaft 7 rotates, and the flap valve 6 is opened.
Filth and wash water 2 are discharged from the discharge port 2. When cleaning is finished and the cleaning water is discharged, the switching valve is switched and the air chamber 31 of the diaphragm pump 10 communicates with the exhaust pipe, the air in the air chamber 31 is removed, and the diaphragm spring 33
The diaphragm 11 returns and the diaphragm pump l
Water is sucked into the O water chamber 27 in preparation for the next cleaning.

〔Effect of the invention〕

Since the present invention is as described above, it has achieved the following effects.

■ The flap valve can be opened and closed with a simple switch operation.

■ Since the flap valve is always closed with a predetermined force, flushing water can be stored in the toilet bowl, and the amount of dirt adhering to the bowl and flap valve can be minimized, while still allowing conventional pedal operation. You can easily open and close the flap by eliminating the

■ Since the air is pressurized and held in the pressurized tank, the capacity of the air pump can be reduced and the operating force of a powerful air cylinder can be obtained in a single time.

■ Since the flap valve is opened and closed using air rather than a geared motor, the following points are good.

A1 Low operating noise, excellent rust and water resistance (in the toilet room) C1 mechanism is simple and highly reliable.

[Brief explanation of drawings]

Claims (1)

[Claims] 1) In a simple flush toilet that discharges pressurized flush water into the bowl and cleans the bowl with a small amount of flush water,
A flap valve that opens and closes the outlet is installed at the outlet provided at the bottom of the toilet bowl, and the flap valve spring is biased so that the flap valve closes the outlet, resisting the flap valve spring during flushing. 1. A flap valve opening/closing mechanism for a simple flush toilet, characterized in that an air cylinder that is driven to open the flap valve is disposed near an outlet.