JPH11210046A - Flushing valve unit for water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To replace an existing manual washing valve with an automatic running water type flushing valve by a simple operation at low cost. SOLUTION: A main passage 28 is formed upward and downward in the central part to a size suited to fitting and inserting by sealing watertight with the inner wall surface of the main body portion with the lower end side facing the passage at discharge side, one end side is communicated to an inlet pipe 10, other end side is provided with a passage forming body 22 formed at the side of a main passage where the passage 30 at inflow side communicating to a coupled passage 32 provided in the upper part of the main passage. A diaphragm 36 is provided for controlling the flow of water between the main passage and the passage at the inflow side located in the coupled passage in contact to a valve seat 34 provided at the upper part of the main passage, inside a casing 50 provided above the passage forming body, the rear of the diaphragm is contacted to and exerted by the casing 50, and an electromagnetic unit containing an electromagnetic coil is housed, which normally contacts the diaphragm to the valve seat and attracts and drives an armature 42 against the exerting force. Also, a sensor 52 for sensing an user of the water closet and a control section for driving the electromagnetic unit based on the signal from the sensor are provided in the casing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flush valve unit used for flush toilets.

[0002]

2. Description of the Related Art Some flushing devices used for flush toilets are equipped with a flushing valve (flash valve) device which can be manually operated so that water can flow when needed for the purpose of saving water. This flush valve device, after flowing a certain amount of water,
It is formed so as to close automatically, and includes, for example, a push button type and a handle type. FIG. 2 shows an example of a push-button type cleaning valve device.

[0003]

In a flush toilet of the type which is manually operated, such as the push button type and the handle type, there is a case where the operation is forgotten or a child, the elderly, the sick, etc. Has a problem that it is cumbersome to use, and has other problems such as being unsanitary. Therefore, in facilities with an unspecified number of users, such as public facilities and hospitals, flush toilets designed to automatically detect the use of the toilet and to automatically flush water are desired. In order to replace the existing manual cleaning valve device with the automatic flushing type, the entire device must be replaced with an automatic one, which requires high remodeling costs and piping work to replace the entire cleaning valve device. At that time, there was a problem that water supply had to be temporarily stopped and construction had to be performed.

Therefore, the present invention has been made to solve these problems, and an object of the present invention is to provide an automatic flushing toilet having a multifunctional function in a short time without stopping water supply to a flushing device. An object of the present invention is to provide a flush valve unit for flush toilets, which can be changed to a flush type and can be installed at low cost.

[0005]

To achieve the above object, the present invention comprises the following arrangement. That is, by manually operating a push button or a handle, etc., between the inflow-side flow path and the discharge-side flow path of the main body portion, the inside of the main body portion of the existing flush valve device for a flush toilet by a piston valve system for flowing water when necessary. A flush valve unit for a flush toilet, which is mounted in place of the entire flush valve mechanism including a detachably mounted piston and a piston support mechanism, the flush valve unit being housed in the main body and sealed in a watertight manner with an inner wall surface of the main body. The main flow path is formed in a vertical direction at the center with the lower end facing the discharge side flow path, and one end side communicates with the inflow pipe and the other end side is formed. An inflow-side flow path communicating with a connection flow path provided at an upper portion of the main flow path is provided with a flow path forming body formed at a side of the main flow path, and is disposed in the connection flow path. Established in A diaphragm is provided to control the flow of water between the main flow path and the inflow-side flow path in contact with the valve seat, and is provided in a casing provided above the flow path forming body so as to abut on a rear portion of the diaphragm. An armature that normally keeps the diaphragm in contact with the valve seat and an electromagnet unit that includes an electromagnetic coil that drives the armature by suction against the urging force are housed therein, and a sensor that senses a user of the toilet bowl is provided in the casing. A control unit for driving the electromagnet unit based on a signal from a sensor is provided.

[0006]

The armature normally presses the diaphragm, and the diaphragm abuts against the valve seat of the main flow path, thereby closing the space between the main flow path and the inflow side flow path and preventing water from flowing into the discharge side flow path. When the use of the toilet is detected by the sensor, the pressure of the diaphragm by the armature is released, the space between the main flow path and the inflow side flow path is opened, and water flows from the inflow side flow path to the main flow path. The flow time of water and the like are set in advance by the control unit, and the drive of the electromagnet unit is controlled accordingly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail. The flush valve unit for flush toilet according to the present invention is designed so that a member of a flush valve device of a flush toilet provided with a conventional flush valve device such as a push button type or a handle type can be partially replaced. By replacing a conventional cleaning valve with a cleaning valve unit, the system can be converted to an automatic flushing type.

FIG. 1 shows an embodiment of a flush valve unit for a flush toilet, and is an explanatory view showing a state where the flush valve unit is mounted on a conventional push-button flush valve device. FIG. 2 shows a conventional push button type cleaning valve device before replacement.

First, the configuration of the conventional example will be described.
Reference numeral 10 denotes an inflow pipe, 12 denotes a main body portion containing a cleaning valve, 14
Is a discharge pipe connected to the toilet. The washing valve is a relief valve 1
6. A relief valve support mechanism, comprising a push button 17 and a push rod 18, etc. Pressing the push button 17 opens the closed flow path, and a predetermined amount of water is discharged from the discharge pipe 1.
It is configured to flow out to the four sides. Reference numeral 19 denotes a stopper rod for adjusting the amount of inflowing water, and reference numeral 20 denotes a packing.
The flush valve unit for flush toilets of this embodiment replaces the flush valve mechanism with a unit described below. The push button 17 is removed and sealed with a cap.

In FIG. 1, reference numeral 22 denotes a flow path forming body whose outer shape is formed in a size to be fitted into the casing of the main body 12, and in which a flow path is formed. Reference numeral 24 denotes an O-ring fitted into a concave groove provided on the outer surface of the flow path forming body 22 to seal between the inner wall of the main body 12 and the flow path forming body 22. Reference numeral 26 denotes a fixing nut for fixing the flow path forming body 22 inserted into the main body 12.

The flow path forming body 22 has a main flow path 28 vertically penetrating at the center thereof, and an inflow side flow path 30 communicating with the inflow pipe 10 at a side of the main flow path 28. A connection channel 32 which is a dish-shaped space is provided above the main channel 28 and the inflow-side channel 30.
The main flow path 28 and the inflow-side flow path 30 are both connected to the connection flow path 32.

At the upper end of the main flow passage 28, a valve seat 34 protruding upward is provided, and a diaphragm 36 is mounted so as to face the valve seat 34. The diaphragm 36 includes a seal member 37 provided at a position in contact with the valve seat 34, and a support 38 that supports the seal member. The central portion of the support 38 is formed in a cylindrical shape, and a relief channel 38a is formed in the center of the cylindrical shape. Reference numeral 40 denotes a communication channel formed by penetrating a small hole in the diaphragm 36 at a position communicating with the inflow-side channel 30.
2 and the inflow side flow path 30 are communicated.

Reference numeral 42 denotes an armature which is housed in a guide cylinder which opens downward, and is urged downward by a spring 44 to normally contact the upper end surface of the support 38 to close the escape passage 38a. At the same time, the diaphragm 36 is pressed to bring the seal member 37 into contact with the valve seat 34. 4
6 is a yoke, 48 is a coil wound around the guide cylinder,
An electromagnet unit is configured together with the armature 42 and the like.

Reference numeral 50 denotes a control unit casing for accommodating a power supply unit, a control unit, a drive unit of the electromagnet unit, and the like. 52 is a sensor provided on the front of the control unit casing 50. This sensor 52 is a sensor for sensing a user. The control unit controls the sensor, and controls the drive of the electromagnet unit by computer control based on the signal sensed by the sensor 52.

Next, the operation of the above embodiment will be described. In a state where the toilet is not used, the armature 42 presses the diaphragm 36 against the valve seat 34 with the spring 44, and the inflow-side flow path 30 and the main flow path 28 are shut off, so that the outflow of water is stopped. In this state, water does not flow through the main flow path 28, and water flows through the connection flow path 32 via the communication flow path 40.

When the use of the toilet is detected by the sensor 52, the electromagnet unit is driven by the control unit, and the armature 42 moves upward against the spring force. As a result, the lower end surface of the armature 42 is separated from the support 38, the relief flow path 38a is opened, and the water in the connection flow path 32 flows out to the release flow path 38a side.

When the water in the connection flow path 32 flows out to the release flow path 38a, the pressure in the connection flow path 32 becomes lower than the pressure in the inflow side flow path 30, so that the connection flow path 32 and the inflow side flow path 3
The balance of the water pressure with 0 is broken, and the diaphragm 36 is pushed up by the water pressure of the inflow-side flow path 30. As a result, the seal member 37 is separated from the valve seat 34, and the inflow-side channel 30 and the main channel 28 communicate with each other at the valve seat 34. That is, the water flows out from the inflow side flow path 30 to the main flow path 28 and flows toward the discharge pipe 14 side.

When stopping the flow of water, the armature 4
2 is returned to the original position, and the diaphragm 36 is
Stop by contacting The control unit drives the electromagnet unit according to a predetermined program, and by setting the driving method of the electromagnet unit in advance as a program, the time for water to flow out, the time of the start of water flow, etc. are appropriately set. can do.

The washing valve unit shown in FIG. 1 is provided with a mechanism for constantly flowing a small amount of water to prevent freezing. Describing this freezing prevention mechanism, reference numeral 60 denotes a bulging portion provided in communication with the inflow-side flow path 30, and 62 denotes an adjusting screw provided to be able to advance and retreat in a concave portion 63 provided in the bulging portion 60. . The recess 63 is provided with a sub-channel 64 provided in the channel forming body 22.
And the inflow-side flow path 30 through a flow path 65 provided in the bulging portion 60, and
To communicate through. Sub flow path 64, flow path 65, recess 63,
The flow path 66 forms a bypass flow path, and the adjusting screw 62
The water can be constantly flowed from the inflow pipe side to the discharge pipe side while adjusting the flow rate by moving the water forward and backward.

In addition to the method of forming the flow path as described above, a flow path 67 having an opening at one end is provided on the inner bottom surface of the recess formed on the side of the valve seat 34, and the bulge communicates with the recess 63. Part 6
The bypass flow path is formed by connecting the flow path 68 and the flow path 67 in 0. The flow channel 68 in the bulging portion 60 is a flow channel provided in the existing cleaning valve device.
The purpose of this is to generate a flow for preventing freezing also on the diaphragm 36 side by contacting with the diaphragm 36, thereby preventing freezing near the diaphragm 36.

Further, in the above embodiment, an example was described in which the flush valve unit for flush toilet was attached to the push-button flush valve device to convert to an automatic flushing flush system. The present invention can be applied in exactly the same way, and can be applied to both urinals and toilets.

Further, in the actual construction, the water can be prevented from flowing to the main body 12 side of the cleaning valve device by tightening the stopper rod 19, and the water is temporarily stopped for the construction. Since there is no need to do this, there is the advantage that construction can be performed without affecting others, and it is extremely effective for construction of public facilities such as hospitals. Further, there is an advantage that the remodeling work can be completed in a short time because it is only necessary to replace the main body part.

[0023]

According to the flush valve unit for flush toilets according to the present invention, the existing manual flush valve can be used as an automatic flush flush valve, which makes it extremely convenient and hygienic. There are also advantages such as saving water. In addition, the present unit has the advantages that the existing apparatus is only partially changed, so that the cost can be reduced and the construction is easy. In addition, the control and adjustment of the water flow can be automatically set as appropriate, and it has a remarkable effect that it can easily be multifunctional as compared with manual operation.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example in which a flush valve unit for flush toilet according to the present invention is mounted.

FIG. 2 is an explanatory diagram showing a configuration of a conventional cleaning valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Inflow pipe 12 Main part 14 Discharge pipe 17 Push button 19 Plug rod 20 Packing 22 Flow path forming body 24 O-ring 28 Main flow path 30 Inflow side flow path 32 Connection flow path 34 Valve seat 36 Diaphragm 37 Seal part 38 Supporting body 40 Communication Flow path 42 Armature 50 Control casing 52 Sensor 62 Adjusting screw

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[Procedure amendment]

[Submission date] November 30, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

To achieve the above object, the present invention comprises the following arrangement. That is, piston inside the body portion of the valve, manual-operated flush valve device for flush toilet according to a flow path formed by sealing the inner wall surface and water tight body portion
The body is mounted, and the flow path forming body has a central portion of the flow path forming body.
The main flow path, the lower end of which faces the discharge pipe, and the main flow path
A connection channel provided so as to be able to communicate with the channel, and the connection channel;
An inflow-side flow path communicating with the inflow pipe is provided ,
Contacting and separating from a valve seat provided above the main flow path in the connection flow path
A diaphragm provided so as to be provided,
On the upper part of the adult, on the rear side of the diaphragm,
The diaphragm is always pressed and contacted by the biasing force of the spring.
To close the relief channel provided in the diaphragm
And the armature to abut against the valve seat, said the armature
An electromagnet unit including an electromagnetic coil for moving drive against the biasing force of the spring, a sensor for sensing the use of the toilet, the
The relief flow passage by driving based-out the electromagnet unit to the signal from the sensor upon sensing the use of the toilet by a sensor
The control unit casing that houses the control unit that opens the
It is characterized by being beaten . Further, in the main body, the
A recess communicating with the inflow-side flow path and the recess communicating with the discharge pipe side
Flow path and flow adjustment screw for adjusting flow rate
Is provided for preventing freezing, the flow path forming body,
A recess is provided on the side of the valve seat that is always in communication with the inflow side flow path.
And one end communicates with the concave portion and the other end forms the bypass flow.
Characterized in that a flow path communicating with a recess forming a path is provided.
I do.

Claims (1)

[Claims] 1. An existing piston valve type flush valve device for a flush toilet, which opens and closes an inlet-side flow passage and a discharge-side flow passage of a main body portion by manual operation of a push button or a handle and allows water to flow when necessary. A flush valve unit for a flush toilet, which is mounted in place of a flush valve mechanism including a piston detachably mounted in a main body and a support mechanism of the piston, the flush valve unit being housed in the main body and being watertight with an inner wall surface of the main body. The main flow path is formed in a size that fits into the discharge side flow path with its lower end facing the discharge side flow path, and a main flow path is formed vertically in the center, and one end side communicates with the inflow pipe. The other end side is provided with a flow path forming body formed on the side of the main flow path, the inflow side flow path communicating with the connection flow path provided above the main flow path, and is disposed in the connection flow path, At the top of the road A diaphragm that abuts against the spar valve seat to control the flow of water between the main flow path and the inflow-side flow path, and that abuts on the rear part of the diaphragm in a casing provided above the flow path forming body. An armature that is normally energized and makes the diaphragm abut on the valve seat, and an electromagnet unit including an electromagnetic coil that drives the armature by suction against the urging force is housed therein; and a sensor for sensing a toilet user in the casing; A flush valve unit for a flush toilet, further comprising a control unit for driving the electromagnet unit based on a signal from the sensor.