JPH08311957A - Flush toilet bowl chemical supply device - Google Patents

Abstract

PURPOSE: To enhance the sealability between a valve body and a valve seat and prevent water leakage by pressing the valve body on the valve seat properly when the valve is closed in a flush toilet bowl chemical supply device which supplies chemical intended to disinfect, deodorize and clean and so forth to a flush toilet bowl every time when flush water flows in the toilet bowl. CONSTITUTION: In a pipe 20 where water flows in and out, a valve stem 24 of a valve mechanism which controls the flow in and out of water and a valve body 23 and a guide shaft 26, which is installed to a connection part between the valve body 23 and the valve stem 24 and guided with the inner peripheral surface of the pipe 20 when the valve body 23 is pressed upon the valve seat 24 and which is insertable into the pie 20 are molded in one piece. When the valve is closed, it is so arranged that the valve body 23 may press the valve seat 24 properly, thereby enhancing the sealability between both the valve body and the valve seat and preventing water leakage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical supply device for flush toilets, and more particularly, it is used in combination with a flush water supply pipe for supplying flush water to flush toilets, and the flush water is flushed each time flush water flows through the flush toilet. The present invention relates to improvement of a chemical supply device for flush toilets that automatically supplies a required amount of chemicals to a toilet bowl for disinfection, deodorization, cleaning, etc.

[0002]

2. Description of the Related Art Generally, flush toilets are treated with various chemicals for the purpose of disinfection, deodorization, cleaning and the like. The method of treating the medicine differs depending on the type of flush toilet, but for example, there is a method of directly introducing the medicine into the toilet bowl or the flush water storage tank, and a method of placing the medicine at the water supply site to the flush water storage tank.

The need for such drug treatment is particularly high in public toilets such as stations and parks used by a large number of people. In that case, ease of drug exchange work and sustainability of drug efficacy are important. Becomes For example, when a medicine is directly poured into a toilet bowl, the replacement work is easy, but the consumption of the medicine is so great that it must be replaced frequently, which is uneconomical. In addition, there is a problem that when the water is put into the wash water storage tank, the work becomes frequent and it is difficult to judge the replacement time of the chemicals. There is also a problem that the amount is large and it is uneconomical.

Further, when the medicine is placed at the water supply portion of the water storage tank, it is difficult to perform the medicine replacement work and the judgment of the replacement time when the water storage tank is located at a high place. Although no problem occurs, there is a risk that mischievous users will perform mischief.

As described above, conventional devices and methods for disinfecting and deodorizing flush toilets by using chemicals have various problems such as frequent chemical replacement work and uneconomical, These problems were particularly serious in public toilets that were used frequently.

In order to solve the above-mentioned various problems, a flush water supply pipe for supplying flush water to a flush toilet is conventionally used in combination, and the flush water is flushed each time the flush water flows through the flush toilet. There is known a chemical supply device for flush toilets which automatically supplies a necessary amount of chemicals to a toilet bowl for the purpose of disinfection, deodorization, cleaning, etc. (for example, Japanese Patent Publication No. 49-2154).
No. 1).

In such a flush toilet chemical supply device, a fixed amount of water is taken into the main body case from the water supply pipe for supplying flush water to the flush toilet via the nozzle and the connecting pipe by the action of the valve element with a float. . Then, the medicine leaching from the leachable bottle stopper such as the cavernous body of the inverted medicine bottle arranged in the main body case is diluted with the water taken in the main body case to make the chemical solution, and the internal pressure in the water supply pipe is reduced. Along with this, the chemical diluted solution is drained again into the water supply pipe through the valve chamber provided with the valve body with the float and the connecting pipe, and then discharged into the toilet bowl.

By the way, the valve device in the conventional medicine supply device for flush toilet is configured as shown in FIG. That is, it is connected via a valve shaft 4 to a float 3 which is provided in a water inflow / outflow pipe portion 2 provided at the bottom of the main body case 1 and which is freely moved up and down in the main body case 1. A valve body 5 that operates integrally with the float 3 and a valve seat 6 that is brought into pressure contact with the valve body 5 when the float 3 is moved upward to close the water inflow / outflow pipe portion 2 are provided. The valve shaft 4 and the valve body 5
Are formed separately from each other and are connected to each other by a screw fitting or a fixture such as a screw or a nut.

[0009]

However, such a conventional structure of the valve shaft 4 and the valve body 5 has the following problems. That is, since the valve shaft 4 and the valve body 5 are formed separately and are connected to each other, it is difficult to make the axial centers of the valve shaft 4 and the valve body 5 coincide with each other, and the valve shaft and the valve body 5 are The coaxiality is low.

In addition, water is required to flow between the valve shaft 4 and the water inflow / outflow pipe portion 2 through the pipe portion 2.
It is necessary to provide a predetermined gap that serves as a water passage portion, and the shaft diameter of the valve shaft 4 is formed to be small.
There is a large play between the exhaust pipe 2 and the valve shaft 4
Since only the upper end of the valve is supported by the nut member 7 in the main body case 1, which is a so-called cantilever support structure,
There is rattling in the movement accompanying opening and closing.

From the above, when the valve is closed, the valve body 5 does not properly press against the valve seat 6 and a minute gap is generated between them.
Since the sealability is poor, there is a problem that water leakage occurs when the valve is closed.

[0012] Therefore, the present invention has been made in view of the above, and is a flushing that automatically supplies a chemical for the purpose of disinfection, deodorization, washing, etc. to the flushing bowl whenever flushing water flows through the flushing bowl. To improve the structure of the valve body part of the medicine supply device for a toilet bowl so that the valve body properly presses against the valve seat when the valve is closed to improve the sealing property between them and prevent water leakage. With the goal.

[0013]

Therefore, in the chemical supply device for flush toilet of the present invention, inflow of water communicated through the communication pipe in the middle of the flush water supply pipe for supplying flush water to the flush toilet. A drain case is provided at the bottom of the body case, and a float is provided in the water inflow / outflow pipe section and is freely moved up and down in the body case. A valve body that operates integrally with the float, a valve seat that press-contacts the valve body when the float moves upwards to block the inflow / outflow pipe portion of the water, and a liquid medicine is supplied into the main body case. The liquid medicine supplied by the medicine supply means is taken in by a function of the valve element with the float into the main body case from the cleaning water supply pipe. Aqueous drug solution diluted with water taken in the case However, in accordance with the decrease in the internal pressure in the flush water supply pipe, the chemical diluted aqueous solution is drained again into the flush water supply pipe, and the flush toilet bowl chemical supply device is configured to be discharged into the toilet bowl with the valve shaft. A valve body and a connecting portion between the valve shaft and the valve body, which are inserted into the pipe portion by being guided by the inner peripheral surface of the water inlet / outlet pipe portion when the valve body and the valve seat are in pressure contact with each other. A possible guide shaft is integrally molded.

[0014]

In this structure, when the flush water is supplied to the flush water supply pipe, the flush water is supplied into the flush toilet via the flush water supply pipe. In addition, part of the wash water flowing through the wash water supply pipe flows into the water inflow / outflow pipe section through the communication pipe, and the valve body is not yet in pressure contact with the valve seat, and the open water inflow / outflow is performed. The water flows through the pipe, and the water flows in and out from the upper end of the pipe. The float moves up when water flows into the main body case,
When the discharge pipe portion is filled with water, it moves up to the uppermost portion, and the valve body presses against the valve seat to block the water inflow / discharge pipe portion. In this case, the guide shaft integrally formed with the valve body is guided by the inner peripheral surface of the water inflow / outflow pipe portion,
It is fitted inside the discharge pipe section. In this state, the inflow of water into the case of the main body is stopped and the water pressure of the wash water still supplied is applied to the valve body, so that the valve body presses against the valve seat and the water inflow / outflow pipe part Is kept closed.

When the water pressure of the wash water decreases near the end of the supply of the wash water, the water pressure of the wash water is no longer applied to the valve body, so the valve body separates from the valve seat, and the water inflow and outflow pipe parts are It will be released. In this case, the guide shaft integrally formed with the valve body comes out from the inside of the water inflow / outflow pipe portion while being guided by the inner peripheral surface of the water inflow / outflow pipe portion.

When the water inflow / outflow pipe portion is opened in this way, the mixed liquid of water and the liquid chemical in the main body case passes through the water inflow / outflow pipe portion and the communication pipe to supply the wash water supply pipe. Then, it flows down from the supply pipe to the inside of the flush toilet bowl.

Further, according to the structure of the present invention, since the valve shaft and the valve body are integrally molded, it becomes easy to make the axial centers of the valve shaft and the valve body coincide with each other, and the valve shaft and the valve body can be made to coincide with each other. The coaxiality of the body becomes high.

Further, since the guide shaft is integrally formed at the connecting portion between the valve shaft and the valve body, even if there is play between the valve shaft and the water inflow / outflow pipe portion, the valve is closed when the valve is closed. When the body is pressed against the valve seat, the guide shaft is fitted inside the water inflow / outflow pipe part while being guided by the inner peripheral surface of the water inflow / outflow pipe part, and the valve shaft is inflow / outflow water. Since it is supported by the pipe portion, the closing operation of the valve body is stabilized without backlash.

In view of the above, the valve body properly presses against the valve seat when the valve is closed, and a minute gap is not formed between them, so that the sealing property is excellent, so that water leakage occurs when the valve is closed. Disappears.

[0020]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 4, a main body case 10 of a medicine supply device for a flush toilet is formed in a substantially rectangular shape, and has a plate-shaped base member 11 located at a rear part and a box-shaped part located at a front part open at one side. It is composed of a lid member 12. Lid member 12
Is assembled and fixed to the base member 11 using, for example, an engaging structure of an engaging groove and an engaging claw or a fastener such as a bolt.

A water container 13 is disposed in the main body case 10, and a portion partitioned by a partition member 13A is provided on one side portion inside the water container 13 and this portion includes As a medicine supply means, a medicine bottle 14 filled with a liquid medicine is set in which the leachable bottle stopper 14A such as a cancellous body is arranged upside down so as to face downward.

An opening 12 is formed in the upper portion of the front wall of the lid member 12.
A is opened, and a large number of circular holes 15A are formed in the opening 12A.
The inner lid member 15 in which is opened is fitted. Also,
An outer lid member 16 that covers the inner lid member 15 is attached to the front surface of the inner lid member 15, and a large number of slit-shaped openings 16A are formed in the outer lid member 16.

The outer lid member 16 has a mounting screw 17 which is inserted into a mounting hole 16B provided in the outer lid member 16 from the outer surface side thereof.
By penetrating the inner lid member 15 and screwing it into the screw hole 11A provided in the base member 11,
The inner lid member 15 is also pressed and fixed together.

Reference numeral 18 denotes a plate having a product logo or the like attached thereto, which is fitted into a groove 16C formed around the mounting hole 16B on the outer surface of the outer lid member 16. The bottom wall of the main body case 10 is provided with a separate pipe body 20 as an inflow / outflow pipe portion of water which is communicated via a communication pipe 19 in the middle of a flush water supply pipe for supplying flush water to the flush toilet. Has been.

The pipe body 20 is composed of an upper pipe member 20A and a lower pipe member 20B which is screw-fitted to the outer peripheral surface of the lower end portion of the upper pipe member 20A. A connection port 20a serving as a communication connection portion of the communication pipe 19 is provided on the peripheral wall of the lower pipe member 20B.

The tubular body 20 has an upper tubular member 20A.
The upper pipe member 2 which penetrates the upper end portion of the main body case 10 through the mounting holes in the bottom wall of the body case 10 and the bottom wall of the water container 13 and projects from the mounting holes.
The nut member 21 is screw-fitted to the outer peripheral surface of the upper end portion of 0A to be attached to the body case 10 and the water container 13.

The nut member 21 is provided with a support hole 21A through which a valve shaft, which will be described later, is supported, and a communication hole 21B which communicates with the through hole 20b of the upper pipe member 20A and opens to the peripheral wall.

The float 22 is housed inside the water container 13 in the main body case 10 so that it can be moved up and down freely. At the lower end of the float 22, a valve body 23 that operates integrally with the float 22 is provided in the through hole 20 of the upper pipe member 20A.
It is connected via a valve shaft 24 penetrating the inside of b and is arranged inside the lower pipe member 20A. Further, the float 2 is provided on the inner peripheral surface of the lower end opening of the through hole 20b of the upper pipe member 20A.
A valve seat 25 having a conical taper surface which is in pressure contact with the upper end surface of the valve body 23 and closes the pipe body 20 when the valve 2 moves upward is formed.

Here, the valve shaft 24, the valve body 23, and the connecting portion of the valve shaft 24 and the valve body 23 are provided, and when the valve body 23 and the valve seat 25 are pressed, the upper pipe of the pipe body 20 is pressed. The guide shaft 26, which is guided by the inner peripheral surface of the through hole 20b of the member 20A and is insertable into the through hole 20b, is integrally formed (see FIG. 5).

In this case, the valve shaft 24 is formed in a round bar shape,
The valve body 23 is formed of a circular plate portion 23A and a conical portion 23B having a trapezoidal cross section and connected to the upper surface of the circular plate portion 23A.
Further, the guide shaft 26 is formed of a round rod portion 26A that is connected to the conical portion 23B of the valve body 23 and a conical portion 26B having a trapezoidal cross section that is connected to the upper end portion of the round rod portion 26A.

The conical portion 23B of the valve body 23 is formed into a tapered surface that matches the conical tapered surface of the valve seat 25. The round bar portion 26A of the guide shaft 26 is formed to have an outer diameter slightly smaller than the inner diameter of the through hole 20b of the upper pipe member 20A.

Next, the operation of the chemical supply device for a flush toilet having the above structure will be described. The flush toilet chemical supply device is used, for example, by fixing the back surface of the base member 11 to a wall near the flush water supply pipe that supplies flush water to the flush toilet of the toilet by using an adhesive tape, a screw, or the like.

When the wash water is supplied to the wash water supply pipe, the wash water is supplied into the flush toilet via the wash water supply pipe. Further, a part of the wash water flowing through the wash water supply pipe flows into the pipe body 20 through the communication pipe 19, and the valve body 23 is not pressed against the valve seat 25 and is opened as shown in FIG. The water flows through the pipe body 20 and flows into the water container 13 from the upper end of the pipe body 20. When the water flows into the water container 13, the float 22 moves upward, and when the pipe 20 and the water container 13 are filled with water, the float 22 moves up to the uppermost position as shown in FIG. Presses against the valve seat 25 and closes the tubular body 20. In this state, the inflow of water into the water container 13 is stopped, and the water pressure of the wash water still supplied is applied to the valve body 23, so that the valve body 23 is pressed against the valve seat 25 and closed. To be kept.

When the water pressure of the wash water decreases near the end of the supply of the wash water, the water pressure of the wash water is reduced.
3, the valve element 23 is separated from the valve seat 25 and the tube body 20 is opened.

When the pipe body 20 is opened in this way, the diluted liquid drug formed by diluting the drug leaching from the leachable bottle stopper 14A of the drug bottle 14 with the water taken in the main body case 10 It reaches the flush water supply pipe through the body 20 and the communication pipe 15, and flows down from the supply pipe to the inside of the flush toilet bowl.

As a result, the flush toilet bowl is subjected to treatments such as disinfection, deodorization and cleaning with a liquid chemical.

According to the chemical supply device for flush toilet having the above-mentioned structure, every time flush water flows through the flush toilet when the toilet is used, the chemical for disinfection, deodorization, cleaning, etc. is automatically supplied to the flush toilet. Therefore, it is possible to improve the workability of exchanging drugs and improve the economical efficiency.

In particular, according to the above configuration, since the valve shaft 24 and the valve body 23 are integrally molded, it becomes easy to align the shaft centers of the valve shaft 24 and the valve body 23, and the valve The coaxiality between the shaft 24 and the valve body 23 is increased.

Further, since the guide shaft 26 is integrally formed and provided at the connecting portion between the valve shaft 24 and the valve body 23, the valve shaft 24
Even if there is a play between the through hole 20b of the upper pipe member 20A and the valve body 23, the guide shaft 26 is guided by the inner peripheral surface of the through hole 20b when the valve body 23 is pressed against the valve seat 25. Since the valve body 23 is fitted in the hole 20b, the operation of the valve body 23 is stabilized without rattling.

From the above, the valve body 23 is properly pressed against the valve seat 25, and a fine gap is not formed between them, so that the valve body 23 has excellent sealing properties, so that water leakage occurs when the valve body 23 is closed. That problem disappears.

If a fragrance agent is provided in the main body case 10, the fragrance component can be discharged to the outside from the circular hole 15A of the inner lid member 15 and the opening 16A of the outer lid member 16, and thus the flush toilet bowl. The surroundings can be refreshed and the toilet environment can be prepared. Of course, the fragrance may be dissolved in the liquid medicine.

Further, in the above embodiment, the flush toilet chemical supply device supplies flush water to the flush toilet of the toilet by using, for example, an adhesive tape or a screw on the back surface of the base member 11. Although it is used by fixing it to the wall near the pipe, it may be embedded in the wall of the toilet or the like.

As a method of supplying the flush water to the flush water supply pipe, a user of the flush toilet can operate the flush water supply device by pressing a push button or the like provided near each toilet, There are an automatic detection type that senses use and automatically operates the wash water supply device, or a cis tank type that flows every predetermined time by a timed device such as a timer, but the present invention is not limited to this type of supply method. It can also be applied to things.

Further, in the above embodiment, the liquid medicine supply means is provided with the medicine bottle 14 which is arranged upside down so that the leachable bottle stopper 14A such as a spongy body faces downward. Alternatively, an optical sensor may be provided so that the liquid chemical is supplied only when the wash water is supplied and the light is detected (see Japanese Patent Laid-Open No. 331898/1993). With the optional supply type and the automatic detection type, liquid chemicals are supplied to the flush toilet only when the toilet is used, and with the cis tank type, flush water is supplied when the toilet is not used and the night light is off. Since the optical sensor 26 does not detect the light even when the operation is performed, the liquid medicine is not supplied to the flush toilet bowl, and in any case, consumption of the liquid medicine can be suppressed, which is economical.

[0045]

As described above, according to the medicine supply device for flush toilet of the present invention, the medicine exchanging workability can be improved,
Not only can the economy be improved, but the valve shaft of the valve mechanism that controls the inflow and discharge of water, the valve body, and the valve body provided at the connecting portion between the valve shaft and the valve body, Since the guide shaft, which is guided by the inner peripheral surface of the pipe portion where the water flows in and out during press contact with the valve seat and can be inserted into the inside of the pipe portion, is integrally molded, the valve is closed when the valve is closed. Since the body is properly pressed against the valve seat, there is an advantage that the sealability between the two can be improved and water leakage can be prevented.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a chemical supply device for a flush toilet according to the present invention, in which FIG. 1A is a side sectional view and FIG. 1B is a front view.

FIG. 2 is an exploded perspective view of the above embodiment.

FIG. 3 is a partially enlarged sectional view of the embodiment, showing a valve closed state.

FIG. 4 is a partially enlarged sectional view of the above embodiment, showing a valve open state.

FIG. 5 is a partially enlarged view of the valve body in the above embodiment.

FIG. 6 is a partially enlarged cross-sectional view of a valve body portion in a conventional technique.

[Explanation of symbols]

 10 Main Body Case 14 Chemical Bottle 19 Communication Pipe 20 Tube 20b Through Hole 22 Float 23 Valve Body 24 Valve Shaft 25 Valve Seat 26 Guide Shaft

Claims (1)

[Claims] 1. A main body case having a bottom portion with an inflow / outflow pipe portion of water, which is communicated through a communication pipe in the middle of a flush water supply pipe for supplying flush water to a flush toilet, A valve body that is provided in the discharge pipe part and is connected to a float that is freely arranged to move up and down in the main body case through a valve shaft and operates integrally with the float, and a valve when the float moves upward. A valve seat, which is brought into pressure contact with a body to block the inflow / outflow pipe portion of the water, and a drug supply means for supplying a liquid drug into the main body case. A fixed amount of water is taken into the case by the action of the valve element with the float, and the liquid medicine supplied by the medicine supplying means is diluted with the water taken into the main body case to prepare a medicine aqueous solution, which is washing water. As the internal pressure in the supply pipe decreases, the aqueous solution for diluting the drug In the flush toilet chemical supply device for draining into the flush water supply pipe again and discharging into the toilet bowl, the valve shaft, the valve body, and the connecting portion between the valve shaft and the valve body are provided. And a guide shaft which is guided by the inner peripheral surface of the water inlet / outlet pipe portion and can be fitted inside the pipe portion when the valve body and the valve seat are pressed against each other. Drug supply device.