JPH0995992A - Flushing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge a fixed quantity of water so as to save water by providing a valve which is arranged in a water feed pipe system so as to feed compressed gas and communicates the water feed side to the discharge side so as to close a valve part, and releasing the compressed gas to open air by pushing operation. SOLUTION: The pedal 62 of a foot switch 2 is stepped on so as to feed a fixed quantity of air to the air bag of a flush valve, and the air bag is expanded. Next, a pilot valve is opened by expansion of the air bag, the pressure of a back pressure chamber is reduced so as to open a valve mechanism and begin to discharge water. Next, when the pedal 62 is further stepped on, air is released from a relief valve 69 so as to deflate the air bag, and the valve mechanism is closed by pressure difference in the flush valve 1 so as to stop water. Consequently, a fixed quantity of water can be discharged only by the operation stepping in the pedal 62.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flushing apparatus used for flushing toilet waste.

[0002]

2. Description of the Related Art As a conventional flushing device of this type, water is discharged by manually pushing a handle of a valve provided in a water discharge supply pipe system of a sitting type toilet bowl, and by releasing the hand from the handle. It was to stop the water.

[0003]

However, in the above-mentioned conventional flushing device, the amount of water discharged is determined by the amount of manipulation of the handle, and the handle must be manipulated several times to remove dirt. However, there was a problem that water could not be saved because there was more water discharge than necessary.

Although different from the above-mentioned flushing device, it is actually used as a water faucet for discharging and stopping water by opening and closing a valve element provided in the water faucet body by stepping on a foot switch installed on the floor. There is a technique disclosed in Japanese Patent Laid-Open No. 121590.

This disclosed technique includes a valve body for opening and closing a flow path,
A bag-like body that is filled with gas and is compressed by stepping pressure,
An expandable body that is connected to the bag-shaped body through a pipe and releases the valve body by the gas pressure generated by the compression of the bag-shaped body, and the valve is operated by the gas pressure generated by the compression due to the stepping pressure of the bag-shaped body. It is designed to control the opening and closing of the body.

However, this water faucet device discharges water by stepping on the bag-shaped body and stops water by stopping the stepping. Therefore, the amount of flowing water until the water is stopped after the water discharge depends on the intention of the person performing the stepping operation, and it has not been possible to automatically and accurately discharge a predetermined amount of water, for example, 6 liters.

The present invention has been made in view of the above problems, and its purpose is to make it possible to automatically discharge a fixed amount of water only by operating a switch. It is to provide a flushing device that saves water.

[0008]

In order to achieve the above object, a water washing apparatus according to the invention of claim 1 is provided in a water discharge supply pipe system and operates by supplying compressed gas to open a valve portion. To connect the water supply side to the water discharge side, and to close the valve part by releasing the compressed gas, and to supply the compressed gas to the valve by pushing operation, and to release the compressed gas to the outside by the next pushing operation following this pushing operation. And a switch for switching.

Therefore, the switch supplies the compressed gas to the valve by the pressing operation to open the valve portion, communicates the water supply side with the water discharge side to discharge water, and then performs the next pressing operation subsequent to the switch pressing operation. By releasing the compressed gas to the outside, the valve part is closed and the water is stopped after a certain time. In this way, a certain amount of water can be discharged by operating the switch.

In order to achieve the above object, the flushing apparatus according to the invention of claim 2 is the flushing apparatus according to claim 1, wherein the valve has a water supply chamber, a water discharge chamber, a water supply chamber and a water discharge chamber. And a back pressure chamber that isolates the valve mechanism from each other by a pressure difference between the water supply chamber and a back pressure chamber that releases the valve mechanism due to a pressure difference between the water supply chamber and a compressed gas supply to generate a pressure difference between the water supply chamber and the back pressure chamber. And means for releasing back pressure.

Therefore, the back pressure releasing means is actuated by the supply of the compressed gas to generate a pressure difference between the water supply chamber and the back pressure chamber, so that the valve mechanism moves to the back pressure chamber side and the water supply chamber. After the water is discharged by communicating with the water discharge chamber, the compressed gas is released to the outside by the next push operation subsequent to the push operation of the switch, whereby the valve portion is closed and the water is stopped after a certain time. In this way, a certain amount of water can be discharged by operating the switch.

In order to achieve the above-mentioned object, the washing device according to the invention of claim 3 is the washing device according to claim 2, wherein the back pressure releasing means connects the back pressure chamber and the water discharge chamber. The communication passage is composed of a pilot valve for opening and closing the communication passage, and a pilot valve operating means for operating the pilot valve by supplying compressed gas.

Therefore, the pilot valve is actuated by the supply of the compressed gas to open the communication passage, and the valve mechanism is moved to the back pressure chamber side in order to generate a pressure difference between the water supply chamber and the back pressure chamber. After the water supply chamber and the water discharge chamber are communicated with each other to discharge water, the compressed gas is released to the outside by the next push operation subsequent to the push operation of the switch, thereby closing the valve portion and stopping the water after a certain time. In this way, a certain amount of water can be discharged by operating the switch.

In order to achieve the above object, the water washing apparatus according to the invention of claim 4 is the method of claim 1 or 2.
Alternatively, in the rinsing device of the rinsing device according to claim 3, the switch reduces the volume by pressing to generate a compressed gas and a compressed gas delivery means for delivering the compressed gas generated in the gas chamber to the valve side. A compressed gas releasing means for releasing the compressed gas to the outside air after a predetermined time has passed after the compressed gas delivering means delivers the compressed gas, and an operating means for operating the gas chamber and the compressed gas releasing means in a series of operations. Prepared

Therefore, the volume of the gas chamber is reduced by the operation of the actuating means to generate and deliver the compressed gas, and then the compressed gas delivering means is actuated by the series of operations of the actuating means to release the compressed gas to the outside. In the valve, the valve part is closed to stop the water. In this way, a certain amount of water is discharged by the operation of the switch.

In order to achieve the above-mentioned object, the flushing device according to the invention of claim 5 is the flushing device according to claim 4, wherein the compressed gas discharge means is a quick relief provided in the compressed gas delivery means. It is a valve, and the actuating means is a foot-operated pedal that has a rotation fulcrum and has a pressing portion that comes into contact with the air chamber and compresses during rotation, and a protrusion that comes into contact with and operates the quick relief valve.

Therefore, when the pedal is rotated, the pressing portion presses the gas chamber to reduce the volume of the gas chamber to generate compressed gas, and after the compressed gas is sent out, the pedal is rotated to cause the protruding portion to be the quick relief. The valve can be operated in contact with the valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water is discharged by the operation of the switch.

In order to achieve the above-mentioned object, the water washing apparatus according to the invention of claim 6 is the method of claim 1 or 2.
Alternatively, in the water washing apparatus according to claim 3, a switch, a pedal mounting portion is formed at one end side of the base, a mounting hole portion is formed at an intermediate portion, and a gas chamber forming member having a gas chamber forming recess is provided at the mounting hole portion. , A gas chamber is formed by covering the gas chamber forming member with a movable member, an intake hole is provided in the movable member, an elastic body for supporting the movable member is provided in the gas chamber, and the gas chamber is provided in the base. A compressed gas passage communicating with the outside and a branch passage branching from the compressed gas passage and opening to the upper surface of the base are provided, a quick relief valve communicating with the branch passage is provided on the upper surface of the base, and a pedal is attached to the pedal attachment portion. Is rotatably attached, and this pedal is supported by a return spring with respect to the base, and the intake hole of the movable member is closed by the pedal when the pedal is rotated. A pressing portion which presses, which is configured by providing a protrusion for opening actuating the quick relief valve.

Therefore, when the pedal is rotated, the pressing portion of the pedal closes the intake hole of the movable member and presses the movable member to reduce the volume of the gas chamber to generate compressed gas. After the compressed gas is delivered through the compressed gas passage, a series of movements of the pedal causes the protrusion provided on the pedal to open the quick relief valve to release the compressed gas to the outside. Close the valve to stop the water. In this way, a fixed amount of water is discharged by the pedal operation of the switch.

Further, in order to achieve the above object, the water washing apparatus according to the invention of claim 7 is the method of claim 1 or 2.
Alternatively, in the water washing apparatus according to claim 3, a switch is provided, a pedal mounting portion is provided on one end side of the base, a gas chamber forming concave portion is provided in an intermediate portion, and the gas chamber forming concave portion is covered with a movable member to form the gas chamber. An elastic body for supporting the movable member is provided in the gas chamber, and a compressed gas passage that communicates the gas chamber to the outside and a branch passage that branches from the compressed gas passage and opens to the upper surface of the base are provided in the base. , A quick relief valve that connects to the branch passage is provided on the upper surface of the base,
The pedal is rotatably attached to the pedal attachment portion, and the pedal is provided with a pressing portion that presses the movable member when the pedal is rotated, and a protrusion that operates to open the quick relief valve.

Therefore, when the pedal is rotated, the pressing portion provided in the pedal presses the movable member to reduce the volume of the gas chamber to generate compressed gas, and the compressed gas is delivered through the compressed gas passage. Then, with a series of movements of the pedal,
The protrusion provided on this pedal can open the quick relief valve to release the compressed gas to the outside air, and the valve portion of the valve closes to stop the water. In this way, a fixed amount of water is discharged by the pedal operation of the switch.

In order to achieve the above-mentioned object, the washing apparatus according to the invention of claim 8 is the method of claim 6 or claim 7.
In the water washing apparatus described above, the movable member is a plate-shaped elastic member fixed to the peripheral portion of the gas chamber forming recess at the outer peripheral portion, and a valve mechanism held by the plate-shaped elastic member and pressed by the pressing portion of the pedal. Have.

Therefore, not only can the function of the invention of claim 6 or claim 7 described above be exerted, but the gas chamber is surely shielded from the outside by the plate-like elastic member.
Dust, dust, etc. are prevented from entering the gas chamber, and the durability is improved. For this reason, the switch can be installed in an environment in which dust or the like exists.

In order to achieve the above-mentioned object, the water washing apparatus according to the invention of claim 9 is the method of claim 1 or 2.
Alternatively, in the water washing apparatus according to claim 3, a switch is provided with a pedal mounting portion on a base, and a bellows-shaped gas chamber forming member is provided, and an internal space of the gas chamber forming member is used as a gas chamber, and a gas is formed on the base. A compressed gas passage that communicates the chamber to the outside and a branch passage that branches from this compressed gas passage and opens to the upper surface of the base are provided, and a quick relief valve that communicates with the branch passage is provided on the upper surface of the base. A pedal is rotatably attached to the pedal, the pedal is connected to the top of the gas chamber forming member, and the pedal is provided with a protrusion for opening the quick relief valve. It was configured by urging it to rotate.

Therefore, when the pedal is rotated, the pedal presses the gas chamber forming member to reduce the volume of the gas chamber to generate compressed gas, and the compressed gas is delivered through the compressed gas passage. With a series of operations of the pedal, the protrusion provided on the pedal can open the quick relief valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a fixed amount of water is discharged by the pedal operation of the switch.

In order to achieve the above-mentioned object, the washing apparatus according to the invention of claim 10 is the washing apparatus according to claim 6, 7 or 8 or 9.
The switch has at least a four-part configuration including a base, a gas chamber component, a quick relief valve, and a pedal.

Therefore, not only the above-mentioned operation of the invention of claim 6 or claim 7 or claim 8 or claim 9 can be achieved, but also the number of parts of the switch can be reduced and the cost can be reduced. .

In order to achieve the above-mentioned object, the washing device according to the invention of claim 11 is the washing device according to claim 1, 2 or 3, wherein the base and the pedal are elastic. Formed integrally with the material.

Therefore, not only the above-mentioned effects of the invention of claim 1 or claim 2 or claim 3 can be achieved, but also the number of parts of the switch is reduced, so that cost reduction can be realized and durability is improved. A certain strong switch can be realized, and the switch can be roughly handled, for example, it can be installed in a public toilet or the like.

In order to achieve the above object, the rinsing device according to the invention of claim 12 is the rinsing device according to claim 11, in which the elastic material is hard rubber, metal or synthetic resin. There is one.

Therefore, not only the same operation as the operation of the invention of claim 11 described above can be achieved, but also when the switch is made of hard rubber or metal, a durable and strong switch can be realized, and the switch can be formed. Treated roughly,
For example, it can be installed in public toilets. The use of stainless steel as the metal material here is effective not only in terms of strength but also in terms of corrosion resistance.

[0032]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a toilet flushing device as an embodiment of the flushing device according to the present invention, FIG. 2 is a vertical sectional view of a flush valve of the flushing device, and FIG. 3 (1) is the flushing device. 3 is a vertical cross-sectional view of the foot switch when water is stopped, (2) of FIG. 3 is a vertical cross-sectional view for explaining the operation of the foot switch when discharging water, and (3) of FIG. 3 is when the relief valve of the foot switch is operating. FIG. 4 is a vertical cross-sectional view for explaining FIG.

The flushing device according to the present invention will be described by taking a toilet flushing device as an example. This filth flushing device includes a flush valve 1 which is a valve provided in a water discharge supply pipe system B of a toilet bowl A which is a stool, and a foot switch 2 which is installed in a floor C and controls the flush valve 1. I have it.

The flash valve 1 has a valve body 3 as shown in FIG.
Is a structure that can be divided into a lower valve body portion 3B and an upper valve body portion 3A in the middle portion. A water supply chamber 5 and a water supply connection pipe portion 6 forming a water supply port 5a of the water supply chamber 5 are provided on the side surface of the valve body 3, that is, the lower valve body 3B. A water discharge chamber 7 and a water discharge connection pipe portion 8 forming a water discharge port 7a of the water discharge chamber 7 are provided below the portion 3B, and the axis line a of the water discharge connection pipe portion 8 is the water supply connection pipe portion 6 The water supply chamber 5 and the water discharge chamber 7 are separated from the inner space of the upper valve body 3A by a movable member including a valve mechanism 11 including a bellows flam 14 which is a plate-like elastic member. The internal space of the upper valve body portion 3A serves as the back pressure chamber 9.

A cylindrical valve seat member 12 is provided in the water discharge chamber 7.
The valve seat member 12 is provided with a cylindrical guide 12A, and the upper end portion of the guide 12A is a valve seat 27.

The valve mechanism 11 includes a disc-shaped valve body 13 and
The guide member 25 provided on the valve body 13 and the valve body 13
And a bellows flare 14 for holding the valve body 13. A peripheral wall portion 15 is erected on a peripheral portion of the valve body 13, and a flange portion 16 protruding outward is formed at an end portion of the peripheral wall portion 15. The peripheral wall portion 15 and the flange portion 16 form a stopper portion 17, and the outer surface of the stopper portion 17 forms a bellows-flame accommodating portion 18 together with the peripheral wall portion of the internal space. A plurality of screw holes 19 are formed on the surface of the valve body 13 at predetermined intervals in the circumferential direction,
An abutting member 20 is fixed to the upper end of the valve body 13.

The bellows flam 14 is disk-shaped, has a hole 14a at the center thereof, and has a thick locking portion 14b formed at the outer peripheral portion thereof. This bellows flam 14 has a locking portion 14b, which is located on the lower valve body 3
B and the locking groove portion 2 of the seam portion 4 of the upper valve body portion 3A
1 is fitted and locked to the valve body 3 and attached to the valve body 3.

The bellows flam 14 has a valve body 13 attached to its inner peripheral side. That is, the inner peripheral side of the bellows flam 14 is provided along the lower surface of the valve body 13, and the holding plate 22 and the support member 23 are provided along the bellows flam 14 from below, and the holding plate 22 and the support member 23 are provided. The inner peripheral side of the bellows flam 14 is sandwiched between the holding plate 22 and the valve body 13 by tightening the screw member 24 on the valve body 13. A bleed 29 is provided on any of the screw members 24.

The bellows flam 14 is curved and is housed in the bellows flam housing portion 18. A guide member 25 is fixed to the center of the lower surface of the valve body 13, and the guide member 25 is inserted into the valve seat member 12. That is,
The guide member 25 has a shaft portion 25B connected to the lower portion of a flow path adjusting portion 25A having a diameter smaller than the inner diameter of the guide 12A of the valve seat member 12, and a plurality of guide piece portions 25C radially formed at the lower portion of the shaft portion 25B. The guide piece portion 25C is in sliding contact with the inner peripheral surface portion of the guide 12A of the valve seat member 12, the space between the adjacent guide piece portions 25C is the flow passage 26, and the flow passage adjusting portion 25A and the valve A flow path 28 is formed between the body guide member 12 and the inner peripheral surface portion thereof, and the valve body 13 is seated on the valve seat 27 at the tip of the guide 12A.

At the upper portion of the upper valve body 3A, one end of a bypass passage 30, which is a communication passage, is opened so as to communicate with the back pressure chamber 9, and the other end of the bypass passage 30 discharges water. It opens to the side surface of the chamber 7. Further, a through hole 32 concentric with the opening 31 of the bypass passage 30 is formed in the upper portion of the upper valve body portion 3A. An air bag case 33 is fixedly provided on the upper surface of the upper valve body 3A, and the through hole 32 is formed in the air bag case 33.
Of the pilot valve 35 is slidably and airtightly penetrates through the through hole 32, and the shaft portion 36 passes through the through hole 32.
The bag holding plate 37 is fixed to the projecting end, and the bag holding plate 37 is provided with an air bag 38 which is a pilot valve actuating means accommodated in the air bag case 33. It is attached.

A spring receiving portion 39 is fixed to the shaft portion 36 of the pilot valve 35, and the spring 4 is provided between the spring receiving portion 39 and the bottom surface portion of the air bag case 33.
0 is provided between the bottom surface of the air bag case 33 and the back holding plate 37, and the pilot valve 35 is biased upward by these springs 40, 41. A pilot valve element 42 provided at the lower end of the pilot valve 35 closes the opening 31 of the bypass passage 30, and an air supply port 43 is provided on the upper surface of the air bag case 33.
The bypass passage 30, the pilot valve 35 that opens and closes the bypass passage 30, and the air bag 38 that operates the pilot valve 35 by supplying the compressed gas constitute a back pressure releasing means.

The foot switch 2 is provided with a base 45 as shown in FIG. 3A, a pedal mounting portion 46 is provided at one end of the base 45, and a mounting hole portion 47 is provided at an intermediate portion. And a tubular portion 48 is formed on the upper surface of the base 45 concentrically with the mounting hole portion 47, and a flange-shaped stopper portion 49 is provided at the upper end of the tubular portion 48. Is formed, and the inner peripheral surface 48 of the tubular portion 48 is formed.
The a and the stopper portion 49 form a bellows-flame housing portion 50. In addition, a spring receiving portion 49 is formed on the end surface portion of the tubular portion 48.

An air passage 51 is formed in the base 45 from the peripheral surface portion of the mounting hole portion 47 to the base end surface 45a, and a branch passage 52 branches off in the middle of the air passage 51. 52 is open in the upper surface of the base 45. A connection pipe 53 is provided at the opening of the air passage 51 on the side of the base end surface 45. Then, the air chamber forming member 54 having the compressed gas forming concave portion 45a in the mounting hole portion 47.
Is mounted via a seal member 55, and a valve mechanism 56 is provided in the mounting hole 47.
As a result, the air chamber 57 that is a gas chamber is formed in the air chamber forming member 54.
Is formed. Further, the air chamber forming member 54 is provided with a conducting path 54A for guiding the air passage 51 to the air chamber 57, and these constitute a compressed gas passage which is a compressed air delivery means.

The valve mechanism 56 includes a disc-shaped valve body 58,
The valve body 58 is provided with a bellows flammer 59 that is a plate-like elastic member that holds the valve body 58, and a pressing member 60.
A peripheral wall portion is erected on the peripheral portion, and the peripheral wall portion constitutes a stopper portion 61. A male screw portion 63 is provided in the lower portion of the valve body 58, and an intake hole 64 is provided in the center portion of the valve body 58.

The bellows flam 59 is disk-shaped, has a hole 59a in the center thereof, and has a thick locking portion 59b formed on the outer periphery thereof. The locking portion 59 b of the bellows flam 59 is fitted and locked to the upper end portion of the mounting hole portion 47 and the locking groove portion 66 of the joint portion of the air chamber forming member 54, and is attached to the base 45.

The bellows flam 59 holds the valve element 58 on the inner peripheral side thereof. That is, the inner peripheral side of the bellows flammer 59 is arranged along the lower surface of the valve body 58, and the holding member 60 is arranged along the bellows flam 59 from below, and the holding member 60 is screwed into the male screw portion 63. By tightening the nut member 67, the inner peripheral side of the bellows flank 59 is sandwiched between the pressing member 60 and the valve body 58. A spring 68, which is an elastic member for supporting the valve mechanism 56, is housed in the air chamber 57. The bellows frame 59 is curved and is housed in the bellows housing part 50.

On the upper surface 45a of the base 45, there is provided a quick relief valve 69 which is a compressed air discharging means. This quick relief valve 69 has a base 45.
A valve holder 70 fixed to the upper surface of the valve holder 70. A valve seat 71 and an exhaust hole 72 are provided at the upper end of the valve holder 70. A spring 76 for urging the valve body 73 upward is housed therein. That is, the valve body 73 has a push button portion 75 provided in the center of the seat portion 74, and the valve body 73 is biased upward by the spring 76 so that the seat portion 74 is seated on the valve seat portion 71. Push button part 7
5 protrudes outward from the exhaust hole 72. The inside of the valve holder 70 is formed as an air chamber 70A, and a branch passage 52 of a compressed gas passage communicates with the air chamber 70A.

The base 45 is provided with a pedal 62 as an operating means. The pedal 62 has a pivotal support portion 65, which is a pivotal fulcrum, at a base end portion thereof, and a pressing portion 7 at a lower surface portion of an intermediate portion.
7 and a protrusion 78, and a packing 79 is fixed to the lower surface of the pressing portion 77.

A pivotal support portion 6 which is a pivotal support point of the pedal 62.
Reference numeral 5 is connected to the pedal mounting portion 46 by a pin 80, and a return spring 81 is attached to the spring receiving portion 49. The return spring 81 supports the pedal 62, and the pressing portion 77 is attached to the valve mechanism 56. The projection 78 faces the push button portion 75 of the quick relief valve 69.

Foot switch 2 constructed as described above
Is connected to the intake hole 43 provided in the airbag case 33 via the pipe 82 connected to the connection pipe 53, and the air chamber 57 of the foot switch 2 is connected to the compressed gas passage,
It communicates with the air bag 38 via a pipe 82.

Next, the operation of the toilet filth flushing device constructed as described above will be described. When the pedal 62 is not stepped on, as shown in (1) of FIG.
Is lifted by a return spring 81.
For this reason, the valve mechanism 56 is lifted by the spring 68, and in the quick relief valve 69, the valve body 73 is biased upward by the spring 76 so that the valve body 73 is seated on the valve seat portion 71. The exhaust hole 72 is closed.

In the flash valve 1, since the air (compressed air) is not supplied to the air bag 38, the pilot valve 35 does not operate, and the pilot valve body 42 provided at the lower end of the pilot valve 35 bypasses. The opening 31 of the passage 30 is closed. In this state, the inside of the water discharge chamber 7 of the lower valve body portion 3B is kept at atmospheric pressure because the pilot valve body 42 closes the opening 31 of the bypass passage 30, while the inside of the back pressure chamber 9 of the water supply chamber 5 is kept. Water supply port 5
The water pressure in the back pressure chamber 9 is maintained at the same pressure as the water supply pressure via a.
The valve body 13 is seated on the valve seat 27 at the tip of the guide 12A. For this purpose, the supply chamber 5 and the water discharge chamber 7
The communication with is cut off and the water is stopped.

Next, as shown in (2) of FIG.
When 2 is stepped against the return spring 81, the packing 79 of the pressing portion 77 on the lower surface of the pedal 62 comes into contact with the upper surface of the valve body 58 of the valve mechanism 56 to close the intake hole 64, and further the pressing portion. 77 pushes down the valve element 58 against the spring 68 to reduce the volume of the air chamber 57. Therefore, the air discharged from the air chamber 57 is supplied to the air bag 38 through the compressed gas passage and the pipe 82.

In the flash valve 1, the air bag 38 is inflated by supplying air to the inside thereof, and pushes down the pilot valve 35 against the springs 40 and 41, and the pilot valve body 42 opens the bypass passage 30. The part 31 is released.

Therefore, the back pressure chamber 9 and the water discharge chamber 7 are communicated with each other through the bypass passage 30, and as a result, the water pressure in the back pressure chamber 9 acts as back pressure on the valve body 13 of the valve mechanism 11. The applied state is released, and at the same time, the water pressure in the water supply chamber 5 kept at the same pressure as the water supply pressure through the water supply port 5a causes the valve mechanism 1 to operate.
1 is applied to the valve body 13 to move the valve body 13 to the back pressure chamber 9 side, the valve body 13 is separated from the valve seat 27, and the supply chamber 5 and the water discharge chamber 7 pass through the flow paths 26 and 28. Communicate through. Therefore, the water supply that has stopped in the supply chamber 5 will be the flow paths 26, 28.
And is supplied to the toilet bowl A through the water discharge chamber 7.

Further, as shown in (3) of FIG.
When 2 is stepped against the return spring 81, the protrusion 78 on the lower surface of the pedal 62 comes into contact with the push button portion 75 of the valve body 73 of the quick relief valve 69 to resist the valve body 73 against the spring 76. The seating portion 74 of the valve body 73 is separated from the valve seat portion 71 by pressing with the air passage 51.
The branch passage 52 is opened to the atmosphere.

Therefore, in the flash valve 1, the air in the air bag 38 is released to the atmosphere through the pipe 82, the compressed gas passage and the branch passage 52, and the pilot valve 35 is urged by the springs 40 and 41. When lifted, the pilot valve body 42 closes the opening 31 of the bypass passage 30.

For this reason, the communication between the water supply chamber 5 and the water discharge chamber 7 by the bypass passage 30 is cut off, and the effect of trying to maintain the pressures of the back pressure chamber 9 and the water supply chamber 5 in equilibrium,
Tap water flows from the water supply chamber 5 into the back pressure chamber 9 via the bleed 29. Then, the valve body 13 of the valve mechanism 11 descends, the valve body 13 is seated on the valve seat 27, the communication between the supply chamber 5 and the water discharge chamber 7 is cut off, and the water is stopped. In that state, the inside of the water discharge chamber 7 of the lower valve body portion 3B is in the pilot valve body 42.
Is at atmospheric pressure because it blocks the opening 31 of the bypass passage 30, while the back pressure chamber 9 is kept at the same pressure as the water supply pressure through the water supply port 5a of the water supply chamber 5, and as a result, the back pressure is applied. Room 9
The water pressure inside is applied to the valve body 13 of the valve mechanism 11 as a back pressure, and the water stop state is maintained. After that, even if the pedal 62 is continuously depressed, the air is not supplied to the flush valve 1 side.

According to the above-described embodiment, when the pedal 62 of the foot switch 2 is stepped on, a certain amount of air is sent to the airbag 38 of the flash valve 1 to inflate the airbag 38, and the airbag 38 is inflated. The expansion of 38 opens the pilot valve 35, depressurizes the back pressure chamber 9 and opens the valve mechanism 11 to start water discharge. When the pedal 62 is further depressed, air is released from the relief valve 69, and the airbag 38 is deflated. Since the valve mechanism 11 is closed due to the pressure difference in the flash valve 1 and the water is stopped, a certain amount of water can be discharged only by depressing the pedal 62.

A second embodiment of the flash valve 1 is shown in FIG. In this flash bulb 1,
The bypass passage 30 is eliminated, and a passage 83 that communicates the back pressure chamber 9 with the water discharge chamber 7 is provided at the center of the valve body 13 of the valve mechanism 11.
The opening 83a of the passage 83 on the back pressure chamber 9 side is closed by the valve body 85 of the pilot valve 84.
In this case, the internal space 34 of the air bag case 33
The upper back holding plate 87 is fixed to the end of the shaft portion 86 of the pilot valve 84 that has rushed in, and the lower holding plate 88 is provided at the bottom of the internal space portion 34. An air bag 89 is housed between the back holding plates 87. A spring 90 is interposed between the ceiling surface of the air bag case 33 and the upper back holding plate 87, and an air supply port 91 is provided on the side surface of the air bag case 33.

In the case of this flash valve 1, since the air is not supplied to the air bag 89, the pilot valve 84 does not operate, and the pilot valve body 85 provided at the lower end of the pilot valve 84 is provided in the passage 83. The opening 83a is closed, and in that state, the inside of the water discharge chamber 7 of the lower valve body 3B is kept at atmospheric pressure, while the inside of the back pressure chamber 9 is supplied with water pressure via the water supply port 5a of the water supply chamber 5. The water pressure in the back pressure chamber 9 is maintained as the same pressure, and as a result, the water pressure in the back pressure chamber 9 is applied as back pressure to the valve body 13 of the valve mechanism 11, and the valve body 13 is seated on the valve seat 27 at the tip of the guide 12A. ing. For this reason, the communication between the supply chamber 5 and the water discharge chamber 7 is cut off and the water is stopped.

When air from the side of the foot switch 2 is supplied to the air bag 89, the air bag 89 expands and pushes up the pilot valve 35 against the spring 90, and the pilot valve body 85 opens the passage 83. Part 8
Release 3a.

Therefore, the back pressure chamber 9 and the water discharge chamber 7 communicate with each other via the passage 83, and as a result, the water pressure in the back pressure chamber 9 is applied to the valve body 13 of the valve mechanism 11 as back pressure. The released state is released, and at the same time, the water pressure in the water supply chamber 5 kept at the same pressure as the water supply pressure is applied to the valve body 13 of the valve mechanism 11 via the water supply port 5a, and the valve body 13 is moved to the back pressure chamber. After moving to the 9 side, the valve body 13 is separated from the valve seat 27, and the supply chamber 5 and the water discharge chamber 7 communicate with each other via the flow paths 26 and 28. Therefore, the water supply stopped in the supply chamber 5 flows to the water discharge chamber 7 through the flow paths 26 and 28 and is supplied to the toilet A.

A second embodiment of the foot switch 2 is shown in FIG. In the foot switch 2, a recessed portion 93 which is a gas chamber forming recessed portion is formed in the base 45, and a valve mechanism 94 is arranged above the recessed portion 93 to form an air chamber 95 which is a gas chamber. There is. Further, in the base 45, an air passage 110 which is a compressed gas passage is formed from the peripheral surface portion of the air chamber 95 to the base end surface 45a,
A branch passage 111 branches off from the middle of the air passage 110, and the branch passage 111 opens to the upper surface of the base 45.

This valve mechanism 94 has a male screw portion 96 at the bottom.
A disc-shaped valve body 96 having a, a bellows flam 97 for holding the valve body 96, and a holding member 98 are provided.
The bellows flam 97 has a hole 97a in the center thereof, and a thick locking portion 97b is formed on the outer periphery thereof.

This bellows flam 97 has its locking portion 97.
b is fitted and locked in the upper end portion of the base 45 and the locking groove portion 100 of the joint portion of the pressing member 99, and is attached to the base 45. Further, the inner peripheral side of the bellows flammer 97 runs along the lower surface of the valve body 96, and the holding member 98 runs along the bellows flamm 97 from below.
The inner peripheral side of the bellows flam 97 is sandwiched between the pressing member 98 and the valve body 96 by tightening the nut member 102 screwed to the male screw portion 96a. A spring 103 that supports the valve mechanism 94 is housed in the air chamber 95.

The quick relief valve 69 provided on the upper surface of the base 45 includes a valve holder 104 fixed to the upper surface of the base 45. The valve holder 104 is provided with an exhaust hole 105. A valve seat portion 106 is formed at the end of the exhaust hole 105, and a ball-shaped valve element 107 is seated on the valve seat portion 106.
The inside of the valve holder 104 is the air chamber 10.
The air passage 108 is communicated with the branch passage 111 of the air passage 110.

A pedal 62 is provided on the base 45. The pedal 62 has a pivotally supporting portion 113, which is a pivotal fulcrum, at a base end portion thereof, and a pressing portion hemispherical pressing portion 109 and a protruding portion 112 on a lower surface portion of an intermediate portion. The pedal 62 has a pivotal support 113, which is its pivotal support, connected to the pedal mounting portion 114 of the base 45 by a pin 115, and the pressing portion 109 is in contact with the valve body 96 of the valve mechanism 94. The portion 112 faces the ball-shaped valve element 107 of the quick relief valve 69.

When the pedal 62 is not depressed, the pedal 62 and the valve mechanism 94 are lifted by the spring 103. When the pedal 62 is depressed against the spring 103, the pressing portion 109 on the lower surface of the pedal 62 pushes down the valve body 96 against the spring 103 to reduce the volume of the air chamber 95. For this reason, this air chamber 95
The air discharged from the air is supplied to the air bag 38 through the air passage 110 and the pipe 82.

When the pedal 62 is further depressed against the spring 103, the protrusion 11 on the lower surface of the pedal 62 is depressed.
2 is a ball-shaped valve element 107 of the quick relief valve 69.
By pressing, the ball-shaped valve element 107 is separated from the valve seat portion 106, and the branch passage 111 of the air passage 110 is opened to the atmosphere.

A third embodiment of the foot switch 2 is shown in FIG. In this foot switch 2, a recess 120 is formed in the base 45.
To the base end surface 45 a, an air passage 121 is formed, and a branch passage 122 is branched from the middle of the air passage 121, and the branch passage 122 is open to the upper surface portion of the base 45. Then, in the recess 120, the mouth portion 123a of the air chamber forming member 123 which is a bellows-shaped gas chamber forming member.
Are fitted together, and the inside of the air chamber forming member 123 is
4, the air chamber 124 communicates with the air passage 121 which is a compressed gas passage. A locking portion 125 is provided on the top of the air chamber forming member 123.

The quick relief valve 69 having an upper surface on the base 45 has a valve holder 126 fixed to the upper surface of the base 45. The valve holder 126 has an exhaust hole 127. A valve seat 128 is formed at the end of the exhaust hole 127, and a ball-shaped valve element 129 is seated on the valve seat 128.
The inside of the valve holder 126 is the air chamber 13.
The branch passage 122 of the air passage 121 communicates with the air chamber 130.

A pedal 62 is provided on the base 45. The pedal 62 has a pivotal support portion 131, which is a pivotal support point, at a base end portion thereof, and a hook 132 and a protrusion portion 133 at a lower surface portion of an intermediate portion. And the pedal 62
However, the pivotal support 131, which is the pivotal support point, is connected to the pedal mounting portion 114 of the base 45 by the pin 115, and the hook 132 is locked to the locking portion 125 at the top of the air chamber forming member 123. Further, the pedal mounting portion 114 is provided with a torsion spring 134, and the torsion spring 134 is used for the pedal 6.
The protrusion 133 is opposed to the ball-shaped valve element 129 of the quick relief valve 69 by urging the valve 2 upward.

When the pedal 62 is not stepped on, the pedal 62 and the air chamber forming member 123 are lifted by the torsion spring 134. When the pedal 62 is depressed against the biasing force of the torsion spring 134, the air chamber forming member 123 is crushed and the volume of the air chamber 124 is reduced. For this reason, the air discharged from the air chamber 124 is
It is supplied to the air bag 38 through the pipe 21 and the pipe 82.

When the pedal 62 is further depressed, the projection 133 on the lower surface of the pedal 62 pushes the ball-shaped valve body 129 of the quick relief valve 69, and the ball-shaped valve body 129 is separated from the valve seat portion 128, and the air is released. The branch passage 122 of the passage 121 is opened to the atmosphere.

A fourth embodiment of the foot switch 2 is shown in FIG. In this foot switch 2, the second
In the embodiment, the base 45 of the foot switch 2 and the pedal 62 are integrally formed of an elastic material such as hard rubber, metal (such as stainless steel), and synthetic resin.
Attach one of the hooks 136 to the end of the base 45 with the pedal 6
The other hook portion 137 that engages with one hook portion 136 is formed at the tip of the two, respectively, to prevent the pedal 62 from jumping up due to its spring force. Other configurations and operations are the same as those of the foot switch 2 in the second embodiment. In this case, the number of parts of the foot switch 2 is reduced, the cost can be reduced, the durable and strong foot switch 2 can be realized, and the foot switch 2 is roughly treated, for example, public. It becomes possible to install it in a toilet or the like.

Although the switch is the foot-operated foot switch (first to fourth embodiments) 2 as described above, the shape and size of the switch, the force required for compressing the air chamber, etc. are manually adjusted. By making it suitable for finger operation, it becomes possible to mount it on the wall or install it in a urinal.
Further, although the bellows and the valve body are separate bodies (separate structures) in the above embodiment, they may be integrally formed.

[0078]

As described above, in the flushing apparatus according to the invention of claim 1, the flushing device is provided in the water discharge supply pipe system and operates by the supply of the compressed gas to open the valve portion to open the water supply side. It is equipped with a valve that communicates with the water discharge side and closes the valve section by releasing compressed gas, and a switch that supplies compressed gas to the valve by pushing operation and releases the compressed gas to the outside by the next pushing operation following this pushing operation. As a result, the switch pushes the compressed gas to the valve to open the valve section, connect the water supply side to the water discharge side to start water discharge, and then press the switch to perform the next compression operation. By releasing the gas to the outside, the valve is closed to stop the water. In this way, it is possible to accurately discharge a fixed amount of water by a series of push operations for operating the switch.

Further, in the flushing apparatus according to the invention of claim 2, in the flushing apparatus according to claim 1, the valve separates the water supply chamber, the water discharge chamber, and the water supply chamber and the water discharge chamber from each other. A back pressure chamber that releases the valve mechanism by the pressure difference between the mechanism and the water supply chamber, and a back pressure release means that operates by the supply of compressed gas to generate a pressure difference between the water supply chamber and the back pressure chamber. With the provision, the back pressure releasing means is actuated by the supply of the compressed gas to generate the pressure difference between the water supply chamber and the back pressure chamber, so that the valve mechanism is moved to the back pressure chamber side to move the water supply chamber. After starting the water discharge by communicating with the water discharge chamber, the compressed gas is released to the outside by the next series of pressing operations following the switch pressing operation to close the valve portion and stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

According to a third aspect of the flushing apparatus of the present invention, in the flushing apparatus according to the second aspect, the back pressure releasing means has a communication passage communicating the back pressure chamber and the water discharge chamber, and this communication passage. By constructing the pilot valve for opening and closing the passage and the pilot valve operating means for operating the pilot valve by supplying the compressed gas, the pilot valve operates by supplying the compressed gas to open the communication passage, and the water supply chamber In order to generate a pressure difference between the back pressure chambers, the valve mechanism moves to the back pressure chamber side to connect the water supply chamber and the water discharge chamber to start water discharge, and then the next series of operations following the switch pressing operation. By pushing the button, the compressed gas is released to the outside air to close the valve and stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

Further, in the washing device according to the invention of claim 4, in the washing device of the washing device according to claim 1, 2 or 3, the switch reduces the volume by pressing and compresses. A gas chamber for generating gas, a compressed gas delivery means for delivering the compressed gas produced in the gas chamber to the valve side, and a compressed gas delivered to the outside after a predetermined time has elapsed after the compressed gas delivery means delivered the compressed gas. By providing the compressed gas releasing means for releasing and the operating means for operating the gas chamber and the compressed gas releasing means in a series of operations, the operation of the operating means reduces the volume of the gas chamber to generate compressed gas,
By sending, the valve portion of the valve is opened to discharge water. The compressed gas delivery means can be operated to release the compressed gas to the outside by a series of operations of the following operation means, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

In order to achieve the above object, the flushing apparatus according to the invention of claim 5 is the flushing apparatus according to claim 4, wherein the compressed gas discharge means is a quick relief provided in the compressed gas delivery means. It is a valve, and the actuating means is a foot-operated pedal that has a rotation fulcrum and has a pressing portion that comes into contact with the air chamber and compresses during rotation, and a protrusion that comes into contact with and operates the quick relief valve.

Therefore, when the pedal is rotated, the pressing portion presses the gas chamber to reduce the volume of the gas chamber to generate compressed gas, which is then discharged to open the valve portion of the valve and discharge water. When the pedal is subsequently rotated, the protruding portion abuts and operates the quick relief valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

According to a sixth aspect of the present invention, there is provided a flushing device according to any one of the first, second and third aspects, wherein a switch, a pedal mounting portion on one end side of the base and an intermediate portion are provided. Mounting holes are formed in the respective parts, a gas chamber forming member having a gas chamber forming concave portion is provided in the mounting hole, and the gas chamber is formed by covering the gas chamber forming member with the movable member, and at the same time, in the movable member. An intake hole is provided, an elastic body for supporting the movable member is provided in the gas chamber, a compressed gas passage that communicates the gas chamber to the outside is provided in the base, and a branch that branches from the compressed gas passage and opens on the upper surface of the base. And a quick relief valve that communicates with the branch passage on the upper surface of the base. The pedal is rotatably attached to the pedal attachment part and this pedal is used to return the spring to the base. The pedal is provided with a pressing portion that closes the intake hole of the movable member to press the movable member when the pedal rotates, and a protrusion that operates to open the quick relief valve. When the pedal is turned, the pressing portion of the pedal closes the intake hole of the movable member and presses the movable member to reduce the volume of the gas chamber to generate compressed gas, which is compressed gas. It is delivered through the passage to open the valve portion of the valve and discharge water. With the subsequent series of operations of the pedal, the protrusion provided on the pedal can open the quick relief valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

According to a seventh aspect of the present invention, there is provided a flushing device according to the first, second or third aspect, wherein a switch, a pedal mounting portion at one end of the base and an intermediate portion are provided. A gas chamber forming recess is provided in the portion, and the gas chamber is formed by covering the gas chamber forming recess with a movable member,
An elastic body for supporting the movable member is provided in the gas chamber,
The base is provided with a compressed gas passage communicating with the outside of the gas chamber and a branch passage branching from the compressed gas passage and opening to the upper surface of the base, and a quick relief valve communicating with the branch passage is provided on the upper surface of the base. The pedal is rotatably attached to the pedal attachment portion, and the pedal is provided with a pressing portion that presses the movable member when the pedal rotates, and a protrusion that opens the quick relief valve. The rotation of the pedal causes the pressing portion of the pedal to press the movable member to reduce the volume of the gas chamber and generate compressed gas, which compressed gas is sent out through the compressed gas passage, and the valve portion of the valve. Open and spout. In the subsequent series of operations of the pedal, the protrusion provided on the pedal can open the quick relief valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

Further, in the washing apparatus according to the invention of claim 8, in the washing apparatus according to claim 6 or 7, the movable member is fixed to the peripheral portion of the gas chamber forming recess at the outer peripheral portion. By having the plate-like elastic member and the valve body held by the plate-like elastic member and pressed by the pressing portion of the pedal, not only the above-described action of the invention of claim 6 or claim 7 can be achieved, Since the gas chamber is reliably shielded from the outside by the plate-like elastic member, invasion of dust, dust, earth and sand, etc. into the gas chamber is prevented and the durability is improved. For this reason, it becomes possible to install the switch in an environment where dust, dust, earth and sand, etc. exist, such as a public toilet. This point is particularly effective when the switch is used as a foot switch and is operated by the foot, and by arranging it on the floor surface, the switch is roughly handled and dust and the like are easily installed. Can realize a durable and strong switch.

According to a ninth aspect of the present invention, there is provided a flushing device according to any one of the first, second and third aspects, wherein the switch is provided with a pedal mounting portion on the base and a bellows shape. A gas chamber forming member is provided, and the internal space of the gas chamber forming member is used as a gas chamber, and a compressed gas passage that communicates the gas chamber to the outside is formed in the base, and a branch is made from this compressed gas passage to open on the upper surface of the base. And a quick relief valve communicating with the branch passage on the upper surface of the base, the pedal is rotatably attached to the pedal attachment portion, and the pedal is connected to the top of the gas chamber forming member. By providing a protrusion for opening the quick relief valve on the pedal and rotating the pedal to the side opposite to the base with a torsion spring,
With the rotation of the pedal, the pedal presses the gas chamber forming member to reduce the volume of the gas chamber to generate compressed gas, and the compressed gas is delivered through the compressed gas passage to open the valve portion in the valve. And spit water. Then, with a series of operations of the pedal, the protrusion provided on the pedal can open the quick relief valve to release the compressed gas to the outside, and the valve portion of the valve is closed to stop the water. In this way, a certain amount of water can be discharged by a series of pressing operations of the switch.

According to a tenth aspect of the invention, there is provided a water washing device according to the sixth or seventh or eighth or ninth aspect, wherein the switch comprises a base and a gas chamber. In addition to the effect of the invention of claim 6 or claim 7 or claim 8 or claim 9 described above, the parts of the switch can be obtained by the at least four-part configuration of the portion, the quick relief valve, and the pedal. The number of points is reduced, and the cost can be reduced.

Further, the washing device according to the invention of claim 11 is the washing device according to claim 1, 2 or 3, wherein the base and the pedal are integrally formed of an elastic material. The above claim 1 or claim 2
Alternatively, not only the function of the invention of claim 3 can be achieved, but also the number of parts of the switch can be reduced, the cost can be reduced, and a durable and robust switch can be realized, and the switch can be rough. It can be installed, for example, in public toilets. This is especially true when the switch is a foot switch, and when the switch is installed in a rough handling environment such as a stepping operation by the user's foot in a public toilet, etc. This is effective in preventing a failure such as cracking.

The rinsing device according to the twelfth aspect of the present invention is the rinsing device according to the eleventh aspect, wherein the material having elasticity is any one of hard rubber, metal and synthetic resin. Not only can the same effects as the effects of the invention of claim 11 be exhibited, but especially by manufacturing with hard rubber or metal, a durable and strong switch can be realized, and the switch is handled roughly, for example, public It becomes possible to install it in a toilet or the like. That is, when the switch is a foot switch, if a foot switch related to a rough handling environment including a stepping operation by a user's foot such as a public toilet is installed, the switch itself may be handled by such a rough handling. If it is a hard rubber, it is effective in that it can prevent a failure such as cracking of the switch due to its elasticity, and if it is a metal, its strength can be prevented.

Since a series of pedal operations are completed in a very short time, the user does not have a feeling of adjusting the amount of pedal depression, but also a stepping action for spouting water and stopping water. Since it is not necessary to make the user's stepping motion to be a separate motion, it is possible to provide a very smooth operation feeling similar to a switch feeling.

[Brief description of drawings]

FIG. 1 is a perspective view of a toilet waste water washing device as an embodiment of the water washing device according to the present invention.

FIG. 2 is a vertical sectional view of a flush valve of the waste water washing device.

FIG. 3 (1) is a vertical cross-sectional view of the foot switch of the waste water cleaning device when water is stopped. (2) is a vertical cross-sectional view for explaining the operation of the foot switch when discharging water. FIG. 3C is a vertical cross-sectional view for explaining the operation of the relief switch in the foot switch.

FIG. 4 is a vertical cross-sectional view of another embodiment of the flush valve of the waste water washing device.

FIG. 5 is a vertical cross-sectional view of another embodiment of the foot switch of the waste water cleaning device.

FIG. 6 is a longitudinal sectional view of another embodiment of the foot switch of the waste water cleaning device.

FIG. 7 is a longitudinal sectional view of another embodiment of the foot switch of the waste water cleaning device.

[Explanation of symbols]

 1 Flash Valve (Valve) 2 Foot Switch (Switch) 11 Valve Mechanism (Valve) 57 Air Chamber (Gas Chamber) 62 Pedal (Operating Means) 69 Quick Relief Valve

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location F16K 31/62 F16K 31/62 (72) Inventor Minoru Sato 2 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka No. 1-1 Totoki Co., Ltd. (72) Inventor Rinen Yanase 2-1-1 1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Co., Ltd.

Claims (12)

[Claims] 1. A valve which is provided in a water discharge supply pipe system and operates by the supply of compressed gas to open a valve portion so that the water supply side communicates with the water discharge side and which closes the valve portion by discharging compressed gas; A flushing device comprising: a switch for supplying a compressed gas to a valve by an operation, and a switch for discharging the compressed gas to the outside air by the next pressing operation subsequent to this pressing operation. 2. A valve, a water supply chamber, a water discharge chamber, a valve mechanism that isolates the water supply chamber and the water discharge chamber from each other, a back pressure chamber that releases the valve mechanism due to a pressure difference between the water supply chamber, and a compression mechanism. A back pressure releasing means for operating by the supply of gas to generate a pressure difference between the water supply chamber and the back pressure chamber is provided.
The washing device described. 3. A back pressure releasing means, a communication passage for connecting the back pressure chamber and the water discharge chamber, a pilot valve for opening and closing the communication passage, and a pilot valve operating means for operating the pilot valve by supplying compressed gas. Claim 2 constituted by and
The washing device described. 4. A gas chamber in which a switch reduces the volume by pressing to generate a compressed gas, a compressed gas delivery means for delivering the compressed gas produced in the gas chamber to a valve side, and a compressed gas delivery means compresses the compressed gas. The method according to claim 1 or 2, further comprising: a compressed gas releasing means for releasing the compressed gas to the outside air after a predetermined time has passed after the gas is delivered and an operating means for operating the gas chamber and the compressed gas releasing means in a series of operations. The water washing apparatus according to claim 2 or claim 3. 5. The compressed gas discharge means is a quick relief valve provided in the compressed gas delivery means, and the actuating means has a rotation fulcrum and a pressing portion for contacting and compressing the air chamber during rotation. The flushing device according to claim 4, wherein the flushing pedal is a foot-operated pedal having a protruding portion that comes into contact with and operates a quick relief valve. 6. A switch, a pedal mounting portion is formed at one end side of a base, a mounting hole portion is formed at an intermediate portion, and a gas chamber forming member having a gas chamber forming concave portion is provided at the mounting hole portion. A gas chamber is formed by covering the member with a movable member, an intake hole is provided in the movable member, a supporting elastic body for supporting the movable member is provided in the gas chamber, and a compression for communicating the gas chamber to the outside is provided in the base. A gas passage and a branch passage branching from this compressed gas passage and opening to the upper surface of the base are provided, a quick relief valve communicating with the branch passage is provided on the upper surface of the base, and the pedal can be pivoted on the pedal mounting portion. At the same time as mounting, the pedal is supported by a return spring with respect to the base, and the pedal has a pressing portion that closes the intake hole of the movable member and presses the movable member when the pedal rotates. The flushing device according to claim 1, 2 or 3, wherein the relief valve is provided with a protrusion for opening the relief valve. 7. A switch, wherein a pedal mounting portion is provided on one end side of a base, a gas chamber forming recess is provided in an intermediate portion, and the gas chamber forming recess is covered with a movable member to form a gas chamber. An elastic body for supporting the movable member is provided, and a compressed gas passage that communicates the gas chamber to the outside and a branch passage that branches from the compressed gas passage and opens to the upper surface of the base are provided in the base. A quick relief valve communicating with the branch passage is provided, the pedal is rotatably attached to the pedal mounting portion, and the pedal has a pressing portion that presses the movable member when the pedal rotates, and a protrusion that operates to open the quick relief valve. The washing device according to claim 1, 2 or 3, wherein the washing device is provided with a portion. 8. A plate-shaped elastic member, wherein the movable member is fixed at the outer peripheral portion to the peripheral portion of the gas chamber forming recess provided in the base,
The water washing apparatus according to claim 6 or 7, further comprising a valve mechanism that is held by the plate-like elastic member and is pressed by a pressing portion of a pedal. 9. A switch, a base is provided with a pedal mounting portion, and a bellows-shaped gas chamber forming member is provided, and an internal space of the gas chamber forming member is made into a gas chamber, and the gas chamber is communicated with the base to the outside. A compressed gas passage and a branch passage branching from the compressed gas passage and opening to the upper surface of the base, a quick relief valve communicating with the branch passage on the upper surface of the base, and a pedal mounted portion for turning the pedal. The pedal is mounted so that it can be attached to the top of the gas chamber forming member, and the pedal is provided with a protrusion for opening the quick relief valve, and the pedal is rotated by a torsion spring to the side opposite to the base. Claim 1 constituted by
Alternatively, the water washing device according to claim 2 or claim 3. 10. The switch according to claim 6, wherein the switch has a base, a gas chamber component, a quick relief valve, and a pedal.
Alternatively, the water washing apparatus according to claim 9. 11. The water washing device according to claim 1, 2 or 3, wherein the base and the pedal are integrally formed of a material having elasticity. 12. The water washing apparatus according to claim 11, wherein the material having elasticity is any one of hard rubber, metal and synthetic resin.