JP2003096868A - Valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable valve device which reduces operating physical force required for opening/closing of a pilot valve, and prevents the occurrence of water leakage, etc. SOLUTION: A valve mechanism has: a valve body which is arranged between a flushing water inlet and a flushing water outlet, and composed of a movable valve and a valve seat; a pressure chamber in which the movable valve serves as a part of an enclosure; an on-off valve which is composed of a small hole for making the pressure chamber communicate with the flushing water inlet; a pilot passage which makes the pressure chamber communicate with a pilot outlet; and the pilot valve which is arranged midway through the pilot passage, and composed of a pilot movable valve and a pilot valve seat. A deformation means is provided at an end, in the direction of a driving axis, of the pilot movable valve of the pilot passage; and the operating physical force, which is exerted from without, is transferred to the pilot movable valve via the deformation means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device provided with a flow path for supplying cleaning water, a valve body disposed in the middle of the flow path, and an operating lever for opening and closing the valve body. Is.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 6-20576 includes a wash water inlet for supplying wash water, a wash water outlet for discharging wash water, and an on-off valve for supplying wash water from the wash water inlet to the wash water outlet. The on-off valve includes a valve body composed of a movable valve and a valve seat, a wash water passage opened and closed by the valve body, a pressure chamber having the movable valve as a part of the surrounding wall, and a working fluid flowing into the pressure chamber. It has a small hole to allow the working fluid to flow out from the pressure chamber, and a pilot valve to start or stop the inflow of the working fluid into the pressure chamber and the outflow of the working fluid from the pressure chamber. The pilot valve is arranged in the middle of the pilot flow path and is composed of a pilot movable valve and a pilot valve seat, and the movable valve is structured to be biased by the supply water pressure to the pilot valve seat. In the valve device having the above structure, the operation of the pilot valve is controlled to start or stop the inflow of the working fluid into the pressure chamber and the outflow of the working fluid from the pressure chamber, and control the internal pressure of the pressure chamber to control the movable valve. To open and close the wash water flow path. The use of the pilot valve enables control of a large amount of wash water with a small amount of power.

[0003]

Regardless of the manual type or the electric type, the drive energy for opening and closing the valve body is usually set according to the maximum value of the supplied water pressure. In the manual type that stores the driving energy for opening and closing the valve element in the spring, etc., it is necessary to set a large spring load so that it can be opened and closed even at the maximum value of the supplied water pressure, and when the supplied water pressure is high, even when the supplied water pressure is high. Since it requires driving energy equivalent to that, the operating force also becomes large. Also, in the conventional valve device, rubber packing is used as the seal material in the boundary area, but not only a large force is required to open and close the valve because it slides, but also the reliability of the sealability and seal life is poor and there is no leakage of water. There is also a risk that the valve may be defective. An object of the present invention is to provide a valve device which has a lighter operating force and is highly reliable.

[0004]

[Means, actions and effects for solving the problem] Claim 1
In the above paragraph, a valve body, which is arranged between the wash water inlet and the wash water outlet and is composed of a movable valve and a valve seat, a pressure chamber having the movable valve as a part of the surrounding wall, the pressure chamber and the cleaning chamber are provided. From an on-off valve consisting of a small hole that communicates with the water inlet, a pilot passage that communicates the pressure chamber and the pilot outlet, and a pilot movable valve and a pilot valve seat that are arranged in the middle of the pilot passage. In the valve mechanism having the pilot valve, a deforming means is provided at an end of the pilot flow valve in the drive axis direction of the pilot movable valve, and an operating force applied from the outside is transmitted to the pilot movable valve via the deforming means. By providing the valve device characterized in that it is not necessary to slide by using the deforming means in the seal surface boundary area, it is possible to reduce the operating force required for opening and closing the valve body. Lumpur property, the durability of the sealing member can be improved.

According to a second aspect of the present invention, the deforming means is arranged downstream of the pilot valve seat, and since the supply water pressure is not received when the pilot valve is closed, the deforming means always has excessive strength. -It is not necessary to use a pressure resistant structure, and the operating force required to open and close the pilot valve can be reduced.

In the third aspect, the deforming means is a pressure receiving element made of a thin rubber film, and the force required for the deformation can be reduced. Therefore, the operating force required for opening and closing the pilot valve can be reduced. it can.

According to a fourth aspect of the present invention, the deforming means is formed in a cup shape, and since expansion and contraction can be increased at the time of deformation, not only the pressure receiving area from the supply water can be reduced, but also a long stroke can be achieved. Can be taken.
Since the pressure receiving area can be reduced, the operating force required for opening and closing the pilot valve can be reduced.

In the present invention, the pilot movable valve is urged to the pilot valve seat by the working fluid flowing from the pressure chamber, and a force is generated in the direction of closing the pilot valve by the supplied water pressure. Since the holding force is not required when the valve is closed, the reliability of water leakage prevention can be improved. Further, it is not necessary to set the driving energy of the pilot valve in anticipation of a site where the supply water pressure is high, and the energy required for opening the valve can be reduced, so the operating force becomes small. In a site where the supply water pressure is low, the operation force becomes smaller, which is a more preferable form.

In the sixth aspect, the energy E of the operating force F1 × the operating amount X1 (= the valve driving force F2 × the valve driving amount X2) is required to open the pilot valve, and the energy E is constant. . Driving amount of pilot movable valve X2 <
The operation force can be reduced by setting the operation amount X1 of the operation lever.

According to a seventh aspect of the present invention, in the valve device according to any one of the first to sixth aspects, the flush water inlet is connected to a tap water supply source, and the flush water outlet is provided in a toilet bowl. This is a toilet device provided in the rear part of the toilet connected to the water discharge port, and when the flush water supply device is hidden inside the toilet, the operating position is limited by the height of the flush toilet. In particular, in the case of a low-silhouette flush toilet, the operating portion is inevitably located at a low mounting position, which imposes an unreasonable posture for operation, which imposes a heavy burden on children and the elderly. Therefore, it is desirable that the operating force is as small as possible. Obviously, it is clear that the operating force is small other than the low silhouette type flush toilet bowl, and it is clear that the operating force is suitable. By using the valve device, these problems can be solved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows a principle of operation of a valve device according to this embodiment. The on-off valve 1 has a valve body 4 composed of a movable valve 2 and a valve seat 3, and a first wash water flow passage 5 opened and closed by the valve body 4. The first washing water passage 5 on the upstream side of the valve body 4 communicates with the washing water inlet 7 via a constant flow valve 6. First wash water flow path 5 downstream of the valve body 4
Communicate with the flow path 8.

The on-off valve 1 has a pressure chamber 9 having the movable valve 2 as a part of the surrounding wall, and a small hole 10 communicating with the pressure chamber 9 is formed in the movable valve 2, and the pressure chamber 9 is a pilot flow. Road 11
The pilot valve 1 in the middle of the pilot flow passage 11
2 are provided.

Similarly, the first switching valve 13 also has a valve body 16 composed of a movable valve 14 and a valve seat 15, and a second washing water passage 17 opened and closed by the valve body 16. The second wash water flow passage 17 on the upstream side of the second valve body 16 communicates with the flow passage 18. The second wash water flow passage 17 on the downstream side of the second valve body 16 communicates with the second wash water outlet 18.

Similarly, the first switching valve 13 has a movable valve 14
Has a pressure chamber 19 as a part of the surrounding wall. Movable valve 1
A small hole 20 communicating with the pressure chamber 19 is formed in the pressure chamber 4, and the pressure chamber 19 communicates with the pilot flow passage 21.
A pilot valve 22 for opening and closing the pilot flow passage 21 is arranged in the middle of the pilot flow passage 21.

A second switching valve 24 is arranged between the flow path 8 and the first washing water outlet 23. The second switching valve 24 includes a movable valve 25, a valve seat 26, and a biasing spring 27. Further, a pressure chamber 28 having the movable valve 25 as a part of the surrounding wall is provided. The pressure chamber 28 communicates with the second cleaning water flow path 17 and the second cleaning water outlet 18 on the downstream side of the movable valve 14 via the communication hole 29.

Next, the operation of the valve device will be described. Before the cleaning is started, the pilot valve 12 blocks the communication between the pilot flow passage 11 and the cleaning water inlet 7. Since the working fluid does not flow into and out of the pressure chamber 9, the pressures of the wash water inlet 7 on the upstream side of the valve body 4 and the pressure chamber 9 are substantially the same, and the valve body 4
Since the pressure of the downstream first cleaning water flow passage 5 is lower than the pressure of the cleaning water inlet 7 upstream of the valve body 4, the internal pressure of the pressure chamber 9 applied to the valve body 4 is lower than the internal pressure of the first cleaning water flow passage 5. Is also big.
As a result, the movable valve 2 is pressed against the valve seat 3, and the valve seat 3 closes the first wash water passage 5. Pilot valve 1
Since 2 closes the first washing water flow path 5, the washing water is not discharged from the valve body 4.

When the pilot valve 12 is opened, a part of the washing water flows into the pressure chamber 9 as a working fluid through the small hole 10,
It flows out of the pressure chamber 9 through the pilot channel 11. Due to the pressure loss when the working fluid passes through the pilot passage 11, the pressure in the pressure chamber 9 becomes lower than the pressure in the first washing water passage 5 on the upstream side of the valve body 4. The balance of the force applied to the movable valve 2 is lost, and the movable valve 2 moves away from the valve seat 3.
As a result, the valve body 4 opens the first washing water flow path 5.

The washing water flows in from the washing water inlet 7, is adjusted to a predetermined flow rate Q through the constant flow valve 6, passes through the first washing water passage 5, and then flows into the passage 8. The pressure in the flow path 8 rises, the balance of the force applied to the movable valve 25 is lost, and the movable valve 2
5 leaves the valve seat 26 and moves to the pressure chamber 28 side. As a result, the flow path 8 communicates with the first cleaning water outlet 23, and the cleaning water flows out from the first cleaning water outlet 23.

When the pilot valve 22 is opened, the working fluid flows out of the pressure chamber 19 through the pilot passage 21. Due to the pressure loss when the working fluid passes through the pilot flow passage 21, the pressure in the pressure chamber 19 becomes lower than the pressure in the flow passage 8 on the upstream side of the valve body 16. The balance of the force applied to the valve body 16 is lost, and the movable valve 14 leaves the valve seat 15 and moves to the pressure chamber 19 side. As a result, the valve body 16 opens the second washing water flow path 17. The wash water flows into the downstream side of the second wash water passage 17 from the flow passage 8, and the wash water of the flow rate Q is discharged from the second wash water outlet 18.

By flowing the wash water through the communication passage 29 between the second wash water flow path 17 and the wash water outlet 18, a part of the wash water flows into the pressure chamber 28 through the communication passage 29,
Since the pressure in the pressure chamber 28 rises, the balance of the force applied to the movable valve 25 is lost, and the movable valve 25 is urged by the valve seat 26. As a result, the second switching valve 24 blocks the communication between the flow path 18 and the first wash water outlet 23. Therefore, the wash water is not discharged to the first wash water outlet 23.

When the pilot valve 22 is closed, the pilot valve 22 closes the pilot flow passage 21 and the valve body 16 closes the second cleaning water flow passage 17. As a result, the discharge of the wash water from the wash water outlet 18 is stopped. Since the wash water stops flowing through the communication passage 29 between the second wash water flow path 17 and the second wash water outlet 18 on the downstream side of the movable valve 14, the communication passage 2
9, the pressure of the pressure chamber 28 decreases, and the second switching valve 24
The balance of the force applied to the movable valve 25 is lost, the movable valve 25 moves away from the valve seat 26 toward the pressure chamber 28 side, and the second switching valve 24 connects the flow path 8 to the first cleaning water outlet 23, and the first cleaning water flow. Cleaning water is discharged from the outlet 23.

When the pilot valve 12 is closed, the valve body 4 closes the first washing water passage 5.

FIG. 2 is a sectional view of the pilot valve, FIG. 3 is an enlarged view of the pilot valve seat portion, FIG. 4 is a general view of the pilot valve, and FIG. 5 is a sectional view of the bellows.

The pilot valve 12 is the pilot movable valve 3
3 and a pilot valve seat 34 facing the pilot movable valve 33. By opening the pilot valve 12, the working fluid is supplied from the pilot inlet 30 and discharged from the pilot outlet 31.

The pilot movable valve 33 is composed of a rubber packing 32 and a pilot movable valve body 35 made of a heat resistant resin such as PPS for fixing the packing 32. By using the heat-resistant resin material, the molded pilot movable valve main body 35 can be inserted into the rubber mold to mold the packing 32, and the packing and the movable valve body can be easily integrated. Pilot movable valve body 35, packing 3
There is also a method in which the two are molded and then integrated by vulcanization adhesion or the like, but the above manufacturing method is effective for the pilot valve 12 in which the dimensions of the pilot movable valve main body 35 and the packing 32 are small.

The pilot movable valve 33 is arranged closer to the pilot inlet 30 than the pilot valve seat 34, and is urged toward the pilot valve seat 34 by the pressure of the pilot inlet 30 and has a structure with excellent pressure resistance. Has become. Also,
In order to ensure water shutoff when the pressure at the pilot inlet 30 is low, the pilot movable valve 33 is attached to the pilot valve seat 3
A coil spring 36 for biasing to the 4 side is attached.

The pilot valve seat 34, as shown in FIG.
The protrusion 37 and the flat portion 38 are formed, and the height of the protrusion 37 is set to be smaller than the thickness of the packing 32, so that the biasing force can be dispersed even when the pressure of the pilot inlet 30 is high. Therefore, damage to the packing 32 can be suppressed.

In order to restrain the movement of the pilot movable valve 33, the pilot movable valve main body 35 is provided with guide portions 40 and 41.
Is provided, and a stopper 42 for restraining the movement distance of the pilot movable valve 33 is provided in the pilot flow path 11
Is formed in.

Pilot valve seat 34 of pilot flow passage 11
A bellows 43, which is a deforming means and is molded into a thin rubber in a cup shape, is attached to a part of the surrounding wall on the downstream side, and a pusher 39 that transmits an operating force to the bellows 43 is coaxial with the pilot movable valve 33 by a pusher guide 44. It is possible to move only in the direction. By pressing the pusher 39, the bellows 43 is deformed, and the pilot movable valve 3
3 is separated from the pilot valve seat 34 against the pressure of the pilot inlet 30 and the load of the coil spring 36, and the pilot valve 12 is opened. The pilot movable valve 33 has a recess 4
5, the bellows 43 is provided with a convex portion 46, and by fitting the convex portion 46, the axial displacement of the pilot movable valve 33 and the pusher 39 is suppressed. When pressure is applied to the pilot outlet 31, a force that pushes the bellows 43 toward the pusher 39 acts,
Since the operation force required to press the pusher 39 becomes large, it is better to open the pilot outlet 31 to the atmosphere. When pressure is applied to the pilot outflow port 31, the operation force required to press the pusher 39 can be reduced by reducing the diameter of the bellows 43.

In this embodiment, as the deforming means, the bellows 43 formed by molding a rubber thin film into a cup shape is used, but a thin rubber sheet 47 as shown in FIG. 6 may be used, or in FIG. The bellows 48 made of metal or resin as shown in FIG. However, in the bellows 48 made of metal or resin, the load required for the deformation is larger than that of the belofrum 43, and therefore the operating force required for opening the pilot movable valve 32 also becomes large. Also,
In order to use the bellows 48 on a part of the surrounding wall of the pilot flow passage 11, the pilot flow passage 11 and the bellows 48 are integrally molded, or a sealing material is required to keep the bellows 48 and the pilot flow passage 11 sealed. Not the best. In the thin rubber seat 47, the pilot movable valve 3
When it is necessary to increase the movement amount of No. 3, the diameter of the seat 47 becomes large and the pilot valve 12 becomes large, which is not the best.

Next, a manual control unit 68 for controlling the valve opening time of the pilot valves 12 and 22 without using electricity will be described.

FIG. 8 is a schematic diagram of the manual control unit 68 in this embodiment, FIG. 9 is a configuration diagram of the second cam 56, FIG. 10 is a configuration diagram of the clutch 54, and FIG. FIG. 12 shows a configuration diagram of the first cam 52, and FIG. 12 shows a configuration diagram of the third cam 58.

When the operating lever 50 is rotated clockwise, the first gear 51 and the first cam 52 directly connected to the operating lever 50 rotate. When not in operation, pilot inlet 3
With the water pressure of 0, the pilot movable valve 33 is biased to the opposed pilot valve seat 34, and the pilot valve 12 is closed. With the rotation of the operating lever 50, the first cam 5
2 drives the pilot movable valve 33 in the opening direction. The pilot movable valve 32 is gradually driven in order to reduce the peak value of the operating force, and when the predetermined rotation angle is reached, the pilot valve 12 is fully opened. By rotating the first gear 51 in synchronization with this, the second gear 53 is rotated counterclockwise. A clutch 54 is directly connected to or integrally formed with the second gear 53, and a coil spring 55 serving as a drive source is formed.
Is also directly connected. While the second gear 53 is rotating in the counterclockwise direction, the clutch 54 is disengaged and the operating force is the coil spring 55.
Is transmitted only to and the driving energy is accumulated.

To open the pilot valve 12, an operating force F1 ×
The energy E of the operation amount X1 (= valve driving force F2 × valve driving amount X2) is necessary, and the energy E is constant.
When the lever length of the operation lever 50 is D and the rotation angle of the operation lever 50 is θ, the operation force is reduced when the relationship of the drive amount X2 of the pilot movable valve <the operation amount X1 of the operation lever = 2πDθ / 360 is satisfied. be able to.

The operation lever 50 is structured by a stopper (not shown) so that the operation of the operation lever 50 is restricted when a predetermined rotation angle β or a predetermined operation amount is reached, and further operation cannot be performed. The drive energy accumulated in the coil spring 55 reaches the maximum when the stopper is reached, and at this time, when the operation lever 50 is opened, the clutch 54 is engaged and the drive force of the coil spring 55 is transmitted to the second cam 56. If the operation lever 50 is not operated for a predetermined rotation angle α or more than a predetermined amount, the clutch 54
Does not mesh with each other, and the second cam 56 is not driven even when the operation lever 50 is opened, and the operation lever 50, the first gear 51, the first cam 52 and the pilot movable valve 33 are not driven.
Returns to the initial position.

The clutch 54 has a rotation angle θ of the operating lever 50.
Is set to a position of α <θ ≦ β and is engaged when it is opened. In this case, there is an idle running section in which the second cam 56 is not driven by (θ−α).

The third gear 57 and the third cam 58 are directly connected to or integrally formed with the second cam 56. The first cam 52 and the second cam 56 are both configured to be able to drive the pilot valve 12, and when the clutch 54 is engaged and the second cam 56 is driven, the first cam 52 rotates counterclockwise. Then, the pilot valve 12 is driven in the closing direction, but the pilot valve 12 moves from the first cam 52 to the second cam 56 during the driving, and maintains the position of the pilot valve 12. The second cam 56 has a shape that keeps the opening amount of the pilot movable valve 33 substantially constant until just before the operation of the operation lever 50 is stopped.

The third gear 58 drives the speed setting means 49, and the braking force generated by the speed setting means 49 drives the second cam 56, the third gear 57, and the third cam 58 at a substantially constant speed. After a lapse of a predetermined time, the third cam 58 drives the pilot valve 22 to the open state to start water flow, and after a predetermined time,
The second cam 56 stops all water flow by closing the pilot valve 12. As the speed setting means 49, there are a means using kinematic viscosity resistance of fluid and a means using eddy current.

Since the second cam 56 and the third cam 58 are adjusted to a substantially constant speed and driven on the basis of the driving energy accumulated in the coil spring in this way, the structure of the second cam 56 and the third cam 58 causes The pilot valve 12 and the pilot valve 22 are closed and opened at predetermined precise timings, and reliable water flow control by the pilot valve 12 and the pilot valve 22 is realized. After a predetermined time T1 from the opening drive of the pilot valve 12, the pilot valve 2
2 is driven to open, then the pilot valve 22 is driven to close after a predetermined time T2, and further, the pilot valve 12 is driven to close after a predetermined time T3. That is, the total operating time T of the pilot valve is represented by T = T1 + T2 + T3, where T, T
The shapes of the second cam 56 and the third cam 58 and the speed setting means 49 accurately manage and control any one of the times T1, T2, and T3.

The arrows shown in FIGS. 9, 10, 11, and 12 indicate the respective rotation directions after the operation lever 50 is opened. Note that FIG. 9 shows the engagement groove of the second cam 56 that engages with the clutch 50 according to the rotation direction.

In order to control the opening / closing time of the pilot valve 12 and the pilot valve 22 using electricity, a motor is used as the speed setting means 49, and the engagement of the clutch 54 and the drive switch of the motor are interlocked. Will be feasible. In this case, since the electric power is used for driving energy, the coil spring 36 can be omitted.

FIG. 13 shows a timing chart of the operation of the pilot valve 12 and the pilot valve 22 and the flow of water through the valve device 59 in this embodiment.

FIG. 13A shows a timing chart of water flow, in which the vertical axis represents the water flow rate and the horizontal axis represents time. The water flow rate indicates the water flow rate of the first wash water outlet 23, the water flow rate of the second wash water outlet 18, and the total water flow rate which is the sum of the two.

FIG. 13B shows a timing chart of the opening of the pilot valve 12 and the pilot valve 22, with the vertical axis representing the opening and the horizontal axis representing the time. Further, the opening degrees indicate the opening degrees of the pilot valve 12 and the pilot valve 22, respectively. t = Ts represents the time when the operating lever 50 is opened after being operated by a predetermined amount or more, and t = Te
Indicates the time when all operations are stopped. Ta and Tc are the times when the first switching valve 13 is in the open state and the first cleaning water outlet 23 is in the water flow state, and Tb is the second switching valve 24 is in the open state and the second cleaning water outlet 18 is shown. Represents the time when water is flowing. Tx represents the time from when the pilot valve 12 is driven to the open state until the first switching valve 13 is closed and the second switching valve 24 is opened, and Ty is when the pilot valve 12 is driven to the closed state. From the first switching valve 13 to the open state and the second switching valve 24 to the closed state, Tg is the open / close valve 1 is closed after the pilot valve 22 is driven to the closed state. Represents the time to stop. Each of Tx, Ty, and Tg represents the operation delay time of the valve device 59 controlled by the opening / closing operation of the pilot valve 12 and the pilot valve 22. Since these operation delay times are peculiar times determined by the structure of the valve, etc., they can be grasped in advance, and after adding these operation delay times to the desired water passage time, the pilot valve 12 and the pilot valve 22 are driven. Just set a time. Note that Tb = T2-Tx, Tc = T3 + Tg-Ty.
Is. Tz is a free running time provided in the manual control unit 68, and the control unit 68 releases the operation lever 50 at t = T.
After T + Tz from s (t = Te = Ts + T + Tz), all operations are stopped and the initial position is restored. Thus, by providing a predetermined idle distance even after the control of the pilot valve 12 and the pilot valve 22 is completed, it is possible to surely stop the water even when the mechanical accuracy is deteriorated due to aging or the like.

FIG. 14 is a block diagram of a flush toilet 60 equipped with the valve device 59 in this embodiment, and FIG. 15 is a flush toilet 6
The external view of No. 0 is shown. As shown in FIG. 14, in the middle of a pipe 61 connected to a water pipe, a valve device including a switching section 64 including a switching valve 1 which is a pilot operated valve body, a first switching valve 13 and a second switching valve 24. 59 are provided. The switching unit 64 is arranged downstream of the on-off valve 1. Switching valve 1
Opens and closes the flow path of the pipe 61, and the switching unit 64
The inlet of the pipe 62 branched from is opened and closed. The downstream end of the pipe 61 communicates with a rim spout hole 66 formed downward toward the rim of the toilet body 65, and the downstream end of the pipe 62 has a trap drainage channel at the bottom of the bowl of the toilet body 65. It communicates with the jet water spouting nozzle 67 which is arranged facing the head. The opening / closing of the opening / closing valve 1 and the switching unit 64 is controlled by opening / closing the pilot valve 12 and the pilot valve 22.

If the flush toilet is equipped with the operating lever 50,
The height of the flush toilet 60 limits the operating position. In particular, in the case of a low silhouette flush toilet, the position of the operation lever 50 is low, which makes it difficult for the user to operate. According to the present invention, the operating force is reduced and the operability is remarkably improved, so that an elderly person or a child can easily use the flush toilet bowl.

[Brief description of drawings]

FIG. 1 is a diagram showing the operating principle of a valve device according to this embodiment.

FIG. 2 is a sectional view of a pilot valve according to the present embodiment.

FIG. 3 is an enlarged view of a pilot valve seat portion in this embodiment.

FIG. 4 is an external view of a pilot movable valve according to the present embodiment.

FIG. 5 is a cross-sectional view of a bellowram in this embodiment.

FIG. 6 is a sheet view of a thin rubber sheet in this embodiment.

[Fig. 7] Fig. 7 is a bellows diagram made of metal or resin and having pleats in the present embodiment.

FIG. 8 is a schematic diagram of a manual operation unit in the present embodiment.

FIG. 9 is a configuration diagram of a second cam according to the present embodiment.

FIG. 10 is a configuration diagram of a clutch in the present embodiment.

FIG. 11 is a configuration diagram of a first cam according to the present embodiment.

FIG. 12 is a configuration diagram of a third cam according to the present embodiment.

FIG. 13 is a timing chart of the operation of the valve body and the water flow of the valve device in the present embodiment.

FIG. 14 is a configuration diagram of a flush toilet having a valve device according to the present embodiment.

FIG. 15 is an external view of the flush toilet in this embodiment.

[Explanation of symbols]

1 on-off valve, 2 ・ 14 ・ 25 movable valve, 3 ・ 15 ・
26 valve seat, 4/16 valve body, 5 first washing water passage,
6 constant flow valve, 7 wash water inlet, 8 flow path, 9 ・
19 ・ 28 Pressure chamber, 10 ・ 20 Small hole, 11 ・ 2
1 pilot flow passage, 12/22 pilot valve, 1
3 1st switching valve, 17 2nd washing water flow path, 18 2nd washing water outflow port, 23 1st washing water outflow port, 24 2nd switching valve, 27 biasing spring, 29 communicating hole, 30
Pilot inlet, 31 Pilot outlet, 32
Packing, 33 pilot movable valve, 34 pilot valve seat, 35 pilot movable valve element, 36 coil spring, 37 protrusion, 38 flat portion, 39/69
Pusher, 40/41 Guide, 42 Stopper, 43 Belofram, 44 Pusher Guide, 4
5 concave part, 46 convex part, 47 seat, 48 bellows, 49 speed setting means, 50 operating lever, 5
1 1st gear, 52 1st cam, 53 2nd gear,
54 clutch, 55 coil spring, 56 second cam, 57 third gear, 58 third cam, 59 valve device, 60 flush toilet, 61/62 piping, 64
Switching unit, 65 toilet device, 66 rim discharge water hole hole, 67 jet water discharge nozzle, 68 control unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomohiro Hirakawa             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F term (reference) 2D039 AA02 BB01 BB02 BB05 DB00                 3H056 AA01 AA07 BB50 CA07 CB03                       CC02 CD01 DD04 GG05                 3H063 AA01 BB08 DA08 GG06

Claims (7)

[Claims] 1. A valve body comprising a movable valve and a valve seat, disposed between a flush water inlet and a flush water outlet, a pressure chamber having the movable valve as a part of a surrounding wall, and the pressure chamber. An on-off valve consisting of a small hole that communicates with the flush water inlet, a pilot flow passage that communicates the pressure chamber with the pilot flow outlet, and a pilot movable valve and a pilot valve seat that are arranged in the middle of the pilot flow passage. And a pilot valve including a pilot valve including a deforming means at an end portion of the pilot flow valve in the drive axis direction of the pilot movable valve, and an operating force applied from the outside through the deforming means. A valve device characterized by being transmitted to. 2. The valve device according to claim 1, wherein the deforming means is arranged downstream of the pilot valve seat. 3. The valve device according to claim 1, wherein the deforming means is a pressure receiving element made of a thin rubber film. 4. The deforming means is formed in a cup shape.
The valve device according to the item. 5. The valve device according to claim 1, wherein the pilot movable valve is biased to the pilot valve seat by a working fluid flowing from the pressure chamber. 6. A cam for transmitting an operation force of an operation lever to the pilot movable valve, wherein the cam makes the operation amount of the operation lever larger than the drive amount of the pilot movable valve. The valve device according to any one of 1 to 5. 7. The valve device according to claim 1, wherein the wash water inlet is connected to a tap water supply source,
A toilet device provided in the rear part of the toilet in a state where the flush water outlet is connected to a flush water outlet provided in the toilet.