JPH0420455B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention supplies flushing water to the urinal only when the user stands in front of the urinal, and the user simply passes in front of the urinal. This invention relates to an automatic flushing device that does not supply flushing water to the urinal, and improvements to the urinal flushing valve used in this device.

[Prior art] Conventionally, automatic urinal cleaning devices were
There is one described in Publication No. 16616. That is, the conventional automatic urinal cleaning device, as shown in FIG.
The light projecting element 85 and the light receiving element 84 are housed in one case, and the projected light is diffusely reflected by the human body 1 approaching the urinal 2, and this reflected light is received by the light receiving element 84, thereby causing the small a reflective photoelectric detector 83 for detecting the human body 1 approaching the toilet bowl 2;
an on-delay circuit 86 that generates an output signal only when the output of the photoelectric detector 83 continues for a predetermined time;
and a single shot circuit 87 that generates a drive signal having a predetermined time width based on the output signal.
and an electromagnetic valve 88 that is opened and closed based on the drive signal to allow cleaning water to flow.

[Problem that the invention seeks to solve] However. In the conventional automatic urinal cleaning device 80 (see FIG. 15), the on-delay circuit 86 is composed of a complicated and expensive electric circuit.
The disadvantages are that maintenance and inspection require a high level of skill and that the entire device is expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide a urinal cleaning valve and an automatic urinal cleaning device to solve the above-mentioned drawbacks.

[Means for Solving the Problems] The first invention provides a urinal flushing valve in which a control valve is provided between an inflow path and a discharge path. ingredients and
An introduction channel that communicates the operating tool with the inflow channel and a discharge channel that communicates the operating tool with the discharge channel are provided, and the introduction channel is formed at an appropriate position in the discharge channel, rather than the passage resistance of an introduction constriction formed at an appropriate location in the introduction channel. The present invention is comprised of an operating waterway whose passage resistance is greater than that of the drainage restrictor, and a water supply operating valve disposed at an appropriate position in the introduction waterway.

The second invention provides a urinal cleaning valve in which a control valve is provided between an inflow path and a discharge path;
An operation channel that communicates the operating tool with the inflow channel and has an introduction constriction formed at an appropriate position, and an operation channel that communicates the operating tool with the discharge channel; It is composed of a water supply operation valve disposed at a proper location and a drainage operation valve disposed at a proper location in the discharge channel.

The third invention is equipped with a urinal cleaning valve having a control valve between an inflow path and a discharge path, and a detection device that issues a detection signal indicating that a human body approaches or exits the urinal, and based on the detection signal, the urinal is flushed. In an automatic urinal cleaning device that operates a cleaning valve, an operating tool that operates with a predetermined water supply pressure to operate the control valve;
An introduction channel that communicates the operating tool with the inflow channel and a discharge channel that communicates the operating tool with the discharge channel are provided, and the introduction channel is formed at an appropriate position in the discharge channel, rather than the passage resistance of an introduction constriction formed at an appropriate location in the introduction channel. The control channel is disposed at an appropriate location in the introduction channel and the operating waterway whose passage resistance is greater than that of the drainage restrictor, and the valve opens based on a human body approaching signal issued by the detection device and closes based on the human body advancing signal. It consists of a water supply operation valve.

The fourth invention is provided with a urinal cleaning valve having a control valve between an inflow path and a discharge path, and a detection device that generates a detection signal indicating that a human body approaches or exits the urinal, and based on the detection signal, the urinal is flushed. In an automatic urinal cleaning device that operates a cleaning valve, an operating tool that operates with a predetermined water supply pressure to operate the control valve;
An operation channel that communicates the operating tool with the inflow channel and has an introduction constriction formed at an appropriate position, and an operation channel that communicates the operating tool with the discharge channel; a water supply operation valve that is disposed at a proper location and operates based on a human body approach signal issued by the detection device; and a drainage operation valve that is disposed at a proper location in the discharge waterway and operates based on a human body exit signal issued by the detection device. It is composed of the following.

[Function] In the first invention, when the operation water flows into the introduction channel from the inflow channel with the opening of the water supply operation valve, the flow resistance of the discharge channel is greater than the passage resistance of the introduction constriction part of the introduction channel. Since the passage resistance of the drainage restrictor is greater, a portion of the operating water gradually flows into the operating tool. Then, the operating tool performs a valve opening operation of the control valve after a predetermined period of time. The control valve discharges cleaning water into the discharge path when the control valve opens. Conversely, if the water supply operation valve is closed and the flow of operation water into the introduction channel stops, the operation water supplied to the operation tool will be discharged to the discharge channel via the discharge channel, so the operation The tool performs the valve closing operation of the control valve. When the control valve is closed, the control valve stops discharging the wash water to the discharge path.

In the second invention, when the drain valve is closed and the water supply operation valve is opened, and the operation water flows into the introduction channel from the inflow channel, the introduction of the introduction channel is performed. The operating water gradually flows into the operating tool due to the passage resistance of the constriction part. Then, the operating tool performs a valve opening operation of the control valve after a predetermined period of time. The control valve discharges cleaning water into the discharge path when the control valve opens. Conversely, when the drain valve is opened and the water supply operation valve is closed, the operation water stops flowing into the introduction waterway, and the operation water supplied to the operating tool is drained via the discharge waterway. In order to discharge the liquid to the road, the operating tool performs a valve closing operation of the control valve. The control valve is
As the valve closes, the discharge of wash water to the discharge path is stopped.

In the third invention, when the water supply operation valve opens based on the human body approach signal issued by the detection device, the operation water that flows into the introduction waterway from the inflow path is
Since the passage resistance of the drainage constriction part of the discharge waterway is greater than the passage resistance of the introduction constriction part of the introduction waterway, a part of the water gradually flows into the operating tool. Then, the operating tool performs a valve opening operation of the control valve after a predetermined period of time. When the control valve opens, flush water is discharged into the discharge path and supplied to the toilet bowl. Conversely, if the detection device issues a human body exit signal, the water supply operation valve closes and stops introducing operation water into the introduction waterway.
When the water supply operating valve is stopped, the operating tool performs a valve closing operation of the control valve because the operating water supplied to the operating tool is discharged to the discharge path via the discharge channel. When the control valve closes, it stops supplying flush water to the toilet bowl.

In the fourth invention, the water supply operation valve opens based on the human body approach signal issued by the detection device, and as the water supply operation valve opens, the operation water that flows into the introduction waterway from the inflow channel , gradually flows into the operating tool due to the passage resistance of the introduction constriction part of the introduction waterway.
Then, the operating tool performs a valve opening operation of the control valve after a predetermined period of time. When the control valve opens, flush water is discharged into the discharge path and supplied to the toilet bowl. Conversely, if the detection device issues a human body exit signal, the drain valve opens and the water supply operation valve closes, so the flow of operation water into the introduction waterway is stopped and the operation supplied to the operation tool is stopped. Since the water is discharged to the discharge channel through the discharge channel, the operating tool performs a valve closing operation of the control valve. When the control valve closes, it stops supplying flush water to the toilet bowl.

[Description of Embodiments] (First Embodiment) FIGS. 1 to 4 show a first embodiment of the first invention. The urinal cleaning valve 11 is
A control valve 14 provided between the inflow path 12 and the discharge path 13
, an operating tool 15 for operating the control valve 14 , and an operating channel 19 including an introduction channel 17 and a discharge channel 18
and a water supply operation valve 2 arranged at an appropriate position in the introduction waterway 17.
Consists of 0.

The control valve 14 is of a flash type having a starter valve 22 inside a main valve 21 . Control valve 14
Press the valve shaft 22a of the starting valve 22 upward,
As shown in FIG. 3, when the starting valve 22 is opened, a pressure water chamber 23 formed above the main valve 21
Since the inside of the main valve 21 and the discharge passage 13 are brought into communication, the main valve 21 receives water pressure from the flow passage 12 and rises to open the valve, thereby bringing the inflow passage 12 and the discharge passage 13 into communication. When the control valve 14 releases the pressure on the valve shaft 22a of the starting valve 22 in the open state in which the main valve 21 is raised, the starting valve 22 enters the closed state as shown in FIG. Drilled small hole 24
(for example, 0.45 mmφ), the main valve 21 is lowered by the water pressure of the return water flowing into the pressure water chamber 23 from the inflow path 12 and finally becomes closed (see FIG. 1).

The operating tool 15 includes a piston 26 slidably inserted into the cylinder 25 and an operating rod 2 projecting from the piston 26 to the outside of the cylinder 25.
7, and a return spring 2 that automatically returns the piston 26.
8 and more. In the operating tool 15, when operating water is supplied to the connection port 16 formed in the cylinder 25, the piston 26 and the operating rod 27 move forward to open the starting valve 22 in the control valve 14, as shown in FIG. Press the valve stem 22a (see FIG. 3). Further, in the operation tool 15, when the connection port 16 enters the drain state, the piston 26 and the operation rod 27 automatically move back due to the repulsion elastic force stored in the return spring 28, and the activation valve 22 of the control valve 14 automatically moves back. The valve is closed (see Figure 4).

As shown in FIGS. 1 and 2, the operation waterway 19 includes an introduction waterway 17 that communicates the connection port 16 of the operation tool 15 with the inflow channel 12, and the connection port 1 of the operation tool 15.
6 is provided with a discharge channel 18 that communicates with the discharge channel 13, and an introduction constriction section 29 consisting of a small hole (for example, 1.0 mmφ) is formed at a suitable location such as the inlet of the introduction channel 17. A discharge constriction portion 30 consisting of a small hole (for example, 0.7 mmφ) is formed at a suitable location such as a joint location. The passage resistance of the discharge throttle section 30 is made larger than the passage resistance of the introduction throttle section 29. The introduction waterway 17 is provided with an electromagnetic water supply operation valve 20 at a suitable position. The water supply operation valve 20 is of a normally closed type that is in an open state (see FIG. 3) when energized. Note that the connection between the introduction waterway 17 and the cylinder 25 and the connection between the discharge waterway 18 and the cylinder 2
5 is made through the common connection port 16, but the connection is not limited to this in any way, and although not shown, it is of course possible to make these connections through separate and independent connection ports. It is.

FIG. 5 shows an embodiment in which the urinal cleaning valve 11 is used in an automatic urinal cleaning device according to the third invention. The detection device 31 includes a detector 34 of an appropriate type such as a reflective type having a light emitting element 32 and a light receiving element 33, and a valve operating switch 35 which is operated based on a detection signal from the detector 34. The valve operation switch 35 opens the water supply operation valve 20 based on the human body approach signal from the detector 34 indicating that the human body 1 has approached the urinal 2, or when the human body 1 has left the urinal 2. The water supply operation valve 20 is brought into a closed state based on the exit signal from the detector 34 indicating this.

Next, the operation of the first embodiment shown in FIGS. 1 to 5 will be explained using the timing chart shown in FIG. 6. If the human body 1 simply passes in front of the urinal 2, the detector 34 shown in FIG. 5 will emit a human body approach signal for a short period of time (for example, 1 to 2 seconds). The valve operation switch 35 operates based on the human body approach signal to open the water supply operation valve 20 shown in FIG. 1 for a short period of time. When the water supply operation valve 20 is opened, operation water flows into the introduction channel 17 from the inflow channel 12 (see Fig. 2), a part of which passes through the discharge channel 18 and flows into the discharge channel. 13, and the remainder is released into the cylinder 2 of the operating tool 15.
5. However, since the opening time of the water supply operation valve 20 is short, only a small amount of operation water is supplied to the cylinder 25 of the operation tool 15. Therefore, in the operating tool 15, the forward movement of the piston 26 is very small, and the starting valve 22 of the control valve 14 cannot be started.

When the urinal 2 is used, the detector 34 shown in FIG. 5 emits a human body approach signal. The valve actuation switch 35 operates based on the human body approach signal,
As shown in FIG. 3, the water supply operation valve 20 is opened. With the opening of the water supply operation valve 20, the inflow path 1
2 (see Figure 2), the operation water flows into the introduction conduit 17 from the introduction constriction part 29 of the introduction conduit 17.
Since the passage resistance of the discharge constriction section 30 of the discharge channel 18 is greater than the passage resistance of the discharge constriction section 30 of the discharge channel 18 (see Fig. 2), a portion of the operation water passes through the discharge channel 18 and flows into the discharge channel 13 as pre-wash water. At the same time, the remainder gradually flows into the cylinder 25 of the operating tool 15. Then, as the amount of water flowing into the operating tool 15 increases, the piston 26 and the operating rod 27 move forward by a predetermined stroke and then stop. The control valve 14 is activated by the activation valve 2 as the operating rod 27 moves forward.
2 opens, the main valve 21 instantly becomes open. When the main valve 21 of the control valve 14 is opened, the wash water is discharged from the inflow path 12 to the discharge path 13 to clean the urinal 2 (see FIG. 5). This cleaning of the urinal 2 is started after a time period T ₁ (see FIG. 6; for example, T ₁ =8 seconds) has elapsed since the detector 34 issues the human body approach signal, and Lasts as long as the user is standing.

When the user leaves the urinal 2, the 5th
The valve actuation switch 35 is actuated based on the human body exit signal generated by the detector 34 shown in the figure, and the water supply operation valve 20 is closed. When the flow of operation water into the introduction waterway 17 is stopped by closing the water supply operation valve 20,
As shown in FIG. 4, the piston 26 of the operating tool 15
The cylinder 25 retreats while discharging the residual water in the cylinder 25 to the discharge channel 18 due to the repulsive elastic force of the return spring 28 . As the piston 26 moves back, the operating rod 2
7 is separated from the valve shaft 22a of the starting valve 22, the starting valve 22 closes. When the start valve 22 is in the closed state, the control valve 14 supplies pressure water from the inlet passage 12 to the pressure water chamber 23 through a small hole 24 formed in the main valve 21.
The main valve 21 is lowered by the water pressure of the return water flowing into the main valve 21 and finally becomes closed (see FIG. 1), stopping the supply of flushing water to the urinal 2 (see FIG. 5). This stop of cleaning the urinal 2 is determined by the detector 34.
This occurs after a time period T ₂ (see FIG. 6, for example, T ₂ =6 seconds) has elapsed since the person issued the human body exit signal.

(Second Embodiment) FIGS. 7 and 8 show a second embodiment of the urinal cleaning valve according to the first invention. In this embodiment, the first
The major difference from the embodiment is that the control valve 37 is a single valve, and a compression spring 38 for setting the starting pressure is disposed between the control valve 37 and the casing 39. At the head of the casing 39, there is a starting pressure adjustment screw 40 for adjusting the initial pressing force of the compression spring 38.
are arranged.

The operating tool 41 includes a piston 43 slidably inserted into the cylinder 42 and an operating rod 4 projecting from the piston 43 to the outside of the cylinder 42.
4 and more. The operating rod 44 is connected to the control valve 37 by bringing its tip into contact with the valve shaft 37a of the control valve 37, or by screwing it onto the valve shaft 37a (not shown).
It may also be configured integrally with Operating tool 41
When operation water at a predetermined pressure is supplied to the connection port 16 formed in the cylinder 42, the piston 43 and the operation rod 44 start moving forward against the compression spring 38, and the control valve 37 is opened. . In addition, the operating tool 4
1, when the connection port 16 is in the drain state, the piston 4 is moved by the repulsive elastic force stored in the compression spring 38.
3 and the operating rod 44 automatically move back to close the control valve 37.

The respective configurations of the operation waterway 19 consisting of the introduction waterway 17 and the discharge waterway 18 and the water supply operation valve 20 are as follows.
This is the same as the first embodiment shown in FIGS. 1 to 4 above.

(Third Embodiment) FIGS. 9 to 11 show an embodiment of a urinal cleaning valve according to the second invention. The urinal cleaning valve 51 has an inflow path 52 and a discharge path 53.
A control valve 54 provided between the control valve 54 , an operating tool 55 for operating the control valve 54 , an introduction waterway 57 and a discharge waterway 58
, a water supply operation valve 60 disposed at a proper position in the introduction channel 57 , and a drainage operation valve 61 disposed at a proper position in the discharge channel 58 .

The control valve 54 is of a flash type having a starter valve 63 inside a main valve 62 . Control valve 54
Press the valve shaft 63a of the starting valve 63 upward,
As shown in FIG. 10, when the starting valve 63 is opened, the pressure water chamber 6 formed above the main valve 62
4 and the discharge passage 53 are in communication, the main valve 62 receives water pressure from the inflow passage 52 and rises to open, thereby bringing the inflow passage 52 and the discharge passage 53 into communication. When the control valve 54 releases the pressure on the valve shaft 63a of the starting valve 63 in the open state in which the main valve 62 is raised, the starting valve 63 enters the closed state as shown in FIG. Drilled small hole 6
5 (for example, 0.45 mmφ), the main valve 62 is lowered by the water pressure of the return water flowing into the pressure water chamber 64 from the inlet passage 52, and is finally closed (see Fig. 9).
becomes.

As shown in FIG. 9, the operating tool 55 includes a two-stage cylinder 66, a piston 67 slidably inserted into the lower cylinder stage 66b, and a piston 67.
an intermediate shaft 68 that protrudes from the cylinder upper stage 66a, an operating rod 69 that is screwed onto the intermediate shaft 68 and projects outside the cylinder 66, and a piston automatic disposed inside the cylinder lower stage 66b. It consists of a return spring 70 for return. In the operating tool 55, when operating water is supplied to the connection port 56 formed in the lower cylinder 66b, the piston 67, intermediate shaft 68, and operating rod 69 move forward, and as shown in FIG. 10, the control valve 54 is moved forward. Press the valve shaft 63a of the starting valve 63 at. Furthermore, when the connection port 56 enters the drain state, the piston 67, the intermediate shaft 68, and the operating rod 69 automatically move back due to the repulsion elastic force stored in the return spring 70, and the operating tool 55 returns to the position shown in FIG. As shown, the starting valve 63 in the control valve 54 is closed.

The operation water channel 59 connects to the connection port 56 of the operation tool 55.
An introduction channel 57 that communicates the inflow channel 52 with the inflow channel 52, and a discharge channel 58 that communicates the connection port 56 of the operating tool 55 with the discharge channel 53 are provided. In addition, a small hole (for example, 1.0 mmφ) is formed at an appropriate place such as the joint with the discharge path 53.
A discharge constriction section 72 consisting of the following is formed as necessary. An electromagnetic water supply operation valve 60 is disposed at a suitable position in the introduction waterway 57 . Water supply operation valve 6
0 is a normally closed type that opens when energized.
An electromagnetic drainage operation valve 61 is disposed at a suitable position in the drainage waterway 58 . The drain operation valve 61 is of a normally open type that closes when energized. Note that the connection between the introduction waterway 57 and the cylinder 66 and the connection between the discharge waterway 58 and the cylinder 66 are made through the common connection port 5.
Although this connection is not limited to this and is not shown in the drawings, it is of course possible to perform these connections through separate connection ports.

FIG. 12 shows an embodiment in which the urinal cleaning valve 51 is used in an automatic urinal cleaning device according to the fourth invention. Detection device 73
is a detector 76 of an appropriate type such as a reflective type or a light emitting type, which is equipped with a light emitting element 74 and a light receiving element 75.
and a valve operating switch 77 that operates based on a detection signal from a detector 76. Valve operation switch 77
Based on the human body approach signal from the detector 76 indicating that the human body 1 has approached the urinal 2, the water supply operation valve 60 is opened and the drain operation valve 61 is kept normally closed. Also, the valve operation switch 77
Based on the exit signal from the detector 76 indicating that the human body 1 has exited the urinal 2, the water supply operation valve 60 is maintained in a normally closed state, and the drain operation valve 61 is opened.

Next, the operation of the third embodiment shown in FIGS. 9 to 12 will be explained using the timing chart shown in FIG. 13. When the human body 1 simply passes in front of the urinal 2, the detector 76 shown in FIG.
A human body approach signal is emitted for a short period of time (for example, 1 to 2 seconds). The valve operation switch 77 operates based on the human body approach signal and closes the water supply operation valve 6 shown in FIG.
0 is opened for a short period of time, and the drain operation valve 61 is kept normally closed. With the opening of the water supply operation valve 60, the operation water that has flowed into the introduction waterway 57 from the inflow path 52 gradually flows into the lower cylinder stage 66b of the operation tool 55 due to the throttling effect of the introduction throttle section 71. However, since the opening time of the water supply operating valve 60 is short, only a small amount of operating water is supplied to the lower cylinder stage 66b of the operating tool 55. Therefore, in the operation tool 55, since the forward movement of the piston 67 at the lower cylinder stage 66b is very small, the activation valve 63 of the control valve 54 cannot be activated with the operation rod 69.

When the urinal 2 is used, the detector 76 shown in FIG. 12 emits a human body approach signal. The valve operating switch 77 operates based on the human body approach signal to open the water supply operation valve 60 and maintain the drain operation valve 61 in a normally closed state, as shown in FIG. With the opening of the water supply operation valve 60, the operation water that has flowed into the introduction waterway 17 from the inflow path 52 gradually flows into the lower cylinder stage 66b of the operation tool 55. The operating tool 55 moves the piston 67, intermediate shaft 68, and operating rod 69 forward by a predetermined stroke against the return spring 70 when the water supply pressure of the operating water supplied to the lower cylinder stage 66b reaches a predetermined pressure. Stop. In the control valve 54, when the starting valve 63 opens as the operating rod 69 moves forward, the main valve 62 instantly opens. When the main valve 62 of the control valve 54 is opened, the wash water is discharged from the inflow path 52 to the discharge path 53 to clean the urinal 2 (see FIG. 12). This cleaning of the urinal 2 is started after a time period T ₃ (see FIG. 13, for example, T ₃ =8 seconds) has elapsed since the detector 76 issues the human body approach signal, and Lasts as long as the user is standing.

When the user leaves the urinal 2, the first
The valve operation switch 77 is activated based on the human body exit signal generated by the detector 76 shown in FIG.
is in an open state. When the flow of operation water into the introduction waterway 57 is stopped by closing the water supply operation valve 60, as shown in FIG. The remaining water is discharged to the discharge channel 58 while retreating. As the piston 67 retreats,
When the operating rod 69 separates from the valve shaft 63a of the starting valve 63, the starting valve 63 closes. Control valve 54
When the starting valve 63 is closed, the main valve 62 is closed by the water pressure of the return water that has flowed into the pressure water chamber 64 from the inlet passage 52 through the small hole 65 formed in the main valve 62.
2 descends and finally becomes closed (see Figure 9), stopping the supply of flush water to the urinal 2 (see Figure 12). The cleaning of the urinal 2 is stopped after a time T ₄ (see FIG. 12, for example, T ₄ =6 seconds) has elapsed since the detector 76 issued the human body exit signal.

(Fourth Embodiment) FIG. 14 shows a second embodiment of the urinal cleaning valve according to the third invention. This embodiment differs greatly from the third embodiment shown in FIGS. 9 to 11 above, in that the control valve 37 is a single valve, and a compression valve for setting the starting pressure is provided between the control valve 37 and the casing 45. This is because a spring 38 is provided. A starting pressure adjustment screw 40 for adjusting the initial pressing force of the compression spring 38 is arranged at the head of the casing 45 .

The operating tool 46 includes a piston 48 slidably inserted into the cylinder 47 and an operating rod 4 projecting from the piston 48 to the outside of the cylinder 47.
9 and more. The operating rod 49 is connected to the control valve 3 by bringing its tip into contact with the valve shaft 37a of the control valve 37, or by screwing it onto the valve shaft 37a (not shown).
It may be configured integrally with 7. Operating tool 46
When operating water at a predetermined pressure is supplied to the connection port 56 formed in the cylinder 47, the piston 48 and the operating rod 49 start moving forward against the compression spring 38, opening the control valve 37. . In addition, the operating tool 4
6, when the connection port 56 is in the drain state, the piston 4 is moved by the repulsive elastic force stored in the compression spring 38.
8 and the operating rod 49 automatically move back to close the control valve 37.

The configurations of the operation waterway 59 consisting of the introduction waterway 57 and the discharge waterway 58, the water supply operation valve 60, and the discharge operation valve 61 are the same as in the third embodiment shown in FIGS. 9 to 11.

[Effects of the Invention] As described in detail above, the urinal flushing valve according to the present invention has an on-day delay function by combining a simple operating channel and a hydraulically operated operating tool, so maintenance and inspection are extremely easy. It's easy to do, and
It has excellent effects that can be provided by an inexpensive valve.
Further, the automatic urinal cleaning device according to the present invention has an on-day delay function by combining a simple structure of an operating channel and a hydraulically operated operating tool without using an on-day delay circuit consisting of a complicated and expensive electric circuit. Therefore, maintenance and inspection can be performed extremely easily, and an inexpensive device can be provided.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the urinal flushing valve according to the first invention, in which FIG. 1 is a longitudinal sectional front view showing the standby state, and FIG.
3 is a partially cutaway right side view of the figure, FIG. 3 is a longitudinal sectional front view showing a state in which cleaning has started, FIG. FIG. 5 is a block diagram showing the entire system, FIG. 6 is a timing chart showing the operating state, and FIGS. 7 and 8 are diagrams showing an embodiment of the automatic urinal cleaning device. FIG. 7 is a longitudinal sectional front view showing a standby state, FIG. 8 is a partially cutaway right side view of FIG. 7, and FIGS. FIG. 11 shows an embodiment of the urinal flushing valve according to the second invention, FIG. 9 is a longitudinal sectional front view showing the standby state, and FIG.
FIG. 0 is a vertical sectional front view showing a state in which cleaning has started, FIG. 11 is a vertical sectional front view showing a state before cleaning is completed, and FIGS. 12 and 13 are embodiments of an automatic urinal cleaning device according to the fourth invention. 12 is a block diagram showing the whole, FIG. 13 is a timing chart showing the operating state, and FIG. 14 is a standby state in the second embodiment of the urinal flushing valve according to the third invention. FIG. 15 is a block diagram showing a conventional automatic urinal cleaning device. 11,51... Urinal cleaning valve, 12,5
2...Inflow path, 13,53...Outflow path, 14,3
7,54...Control valve, 15,41,55...Operation tool, 16,56...Connection port, 17,57...Introduction waterway, 18,58...Discharge waterway, 19,59...
Operation channel, 20, 60...Water supply operation valve, 21, 6
2... Main valve, 22, 63... Starting valve, 25, 66
...Cylinder, 26,67...Piston, 30,
72...Discharge throttle section, 29, 71...Introduction throttle section, 31, 72...Detection device.

Claims (1)

[Scope of Claims] 1. In a urinal cleaning valve having a control valve between an inflow path and a discharge path, an operating tool that is activated by a predetermined water supply pressure to operate the control valve, the operating tool and the inflow an inlet waterway that communicates with the operating tool and a discharge channel that communicates the discharge channel;
An operating waterway in which the passage resistance of a drainage constriction formed at a suitable position in a discharge waterway is greater than the passage resistance of an introduction constriction formed at a suitable position in the introduction waterway, and a water supply operation valve disposed at a suitable position in the introduction waterway. A urinal cleaning valve characterized by: 2. The urinal cleaning valve according to claim 1, wherein the control valve includes a starter valve inside the main valve. 3. The urinal flushing valve according to claim 2, wherein the operating tool includes an operating rod that can move forward and backward to start the starting valve, and a piston that is inserted into a cylinder and drives the operating rod. . 4. In a urinal flushing valve having a control valve between an inflow path and a discharge path, an operating tool operated by a predetermined water supply pressure to operate the control valve, and the operating tool communicates with the inflow path. an operation channel including an introduction channel having an introduction constriction formed at an appropriate location and a discharge channel that communicates the operating tool with the discharge channel; a water supply operating valve disposed at an appropriate location in the introduction channel; A urinal cleaning valve characterized by consisting of a drain operation valve disposed at an appropriate location in a waterway. 5. The urinal flushing valve according to claim 4, wherein the control valve includes a starter valve inside the main valve. 6. The urinal flushing valve according to claim 5, wherein the operating tool includes an operating rod that can move forward and backward to start the starting valve, and a piston that is inserted into a cylinder and drives the operating rod. . 7 A urinal flushing valve with a control valve installed between the inlet and outlet channels, and a detection device that emits a detection signal when a human body approaches or exits the urinal, and operates the urinal flushing valve based on the detection signal. In an automatic urinal cleaning device, an operating tool that is activated by a predetermined water supply pressure to operate the control valve, an introduction channel that communicates the operating tool with the inflow channel, and a discharge channel that communicates the operating tool with the discharge channel. and an operating waterway in which the passage resistance of a drainage constriction part formed at a proper place in the discharge waterway is greater than the passage resistance of an introduction constriction part formed at a proper place in the introduction waterway; An automatic urinal cleaning device comprising: a water supply operation valve that opens based on a human body approach signal issued by the detection device and opens based on a human body exit signal. 8. The automatic urinal cleaning device according to claim 7, wherein the control valve includes a starter valve inside the main valve. 9. The automatic flushing of a urinal according to claim 8, wherein the operating tool includes an operating rod that can move forward and backward to start the starting valve, and a piston that is inserted into a cylinder and drives the operating rod. Device. 10 A urinal flushing valve with a control valve provided between the inflow path and the discharge path, and a detection device that emits a detection signal that a human body approaches or exits the urinal, and operates the urinal cleaning valve based on the detection signal. In an automatic urinal flushing device, there is provided an operating tool that is activated by a predetermined water supply pressure to operate the control valve, and an introduction device that communicates the operating tool with the inflow channel, and that has an introduction constriction formed at an appropriate location. an operating waterway including a waterway and a discharge channel that communicates the operating tool with the discharge channel; a water supply operating valve that is disposed at a proper location in the introduction waterway and operates based on a human body approach signal issued by the detection device; 1. An automatic urinal cleaning device comprising a drain operation valve that is disposed at a proper location in a drain channel and is operated based on a human body exit signal issued by the detection device. 11. The automatic urinal cleaning device according to claim 10, wherein the control valve includes a starter valve inside the main valve. 12. The small device according to claim 11, wherein the operating tool includes an operating rod that can move forward and backward to start the starting valve, and a piston that is slidably inserted into a cylinder and drives the operating rod. Automatic toilet flushing device.