JPH0344860Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] In the present invention, a cylindrical body attached to the starting rod of the sub-valve body so as to be able to rise and fall is positioned corresponding to the push rod of the handle, and the cylindrical body is moved by the water discharging operation of the handle. By riding on the push rod, the time the sub-valve element opens the outlet of the main valve element (washing water amount) is always the set time, regardless of the length of time the handle is operated. This relates to flash valves.

[Conventional technology]

This type of water-saving flush valve is shown in Fig. 2, which was published in the Utility Model Publication No.
There is a technique described in Publication No. 53356. This flush valve F is configured such that when the main valve body 1 moves up inside the valve chamber 3, the primary side passageway 4 and the secondary side passageway 5 are connected to each other.
It is designed to communicate with The main valve body 1 is
It has a hollow cylindrical shape, and a guide portion 14 for guiding up and down is provided on the bottom surface. Further, a small water passage hole 11 is bored at a proper position on the side of the main valve body 1, and a strainer 12 is attached to the outer periphery of the side. In addition, both 10 and 13 are packkins.

Inside the main valve body 1, there is provided a sub-valve body 2 formed in a substantially truncated conical shape. The sub-valve body 2 is pressed downward in FIG. 2 by a spring 23, and
The outlet 17 formed at the bottom of the main valve body 1 is closed. Further, an adjustment member 21 having a groove 21a carved in its head is screwed into the through hole provided in the center of the sub-valve body 2, and the activation rod 1 is connected to the adjustment member 21.
5 is screwed on and protrudes from the outlet 17. The cylindrical body 16 is fitted onto the starting rod 15 so as to be able to rise and fall freely, and a stepped portion 15 is formed on both the outer periphery of the end of the starting rod 15 and the inner periphery of the cylindrical portion 16.
A and 16a prevent both from coming off. A gasket 25 is interposed between the sub-valve body 2 and the bottom of the main valve body 1, and the gasket 25 is fixed by a gasket retainer 24 screwed onto the inner peripheral surface of the side of the main valve body. .

Next, the operation mode of the water-saving flush valve F constructed as described above and previously filed by the present applicant will be explained.

First, when the handle 29 is tilted as shown in FIG. 3 in order to discharge the cleaning water, the push rod 26 is guided by the push rod guide 27 and the seal retaining cylinder 28 and moves, pushing out the side surface of the cylinder 16. For this reason,
The sub-valve body 2 is tilted and separated from the gasket 25 to open the outlet port 17. Then, the pressure chamber 3 of the main valve body 1
0 water flows out to the secondary side water passage 5 through the outlet 22 of the head of the main valve body 1, and the pressure in the pressure chamber 30 decreases, so that the main valve body 1 is closed to the valve as shown in FIG. It rises inside the chamber 3 and the water inlet 31 becomes open.
Wash water flows out from the primary side passageway 4 to the secondary side passageway 5.

The cylinder body 16 is pushed by the push rod 26 by operating the handle, and while the sub-valve body 2 is tilted, the main valve body 1 continues to rise. However, in the case of this water-saving type flush valve F, as shown in FIG.
The lower end 16b of the push rod 26 comes to get over the upper surface 26a of the push rod 26, and the auxiliary valve body 2 is immediately seated by the biasing force of the spring 23, and the outlet port 17 at the bottom of the main valve body 1 is closed. At the same time, cleaning water flows into the main valve body 1 from the small water passage hole 11 on the side of the main valve body, is supplied to the pressure chamber 30, and the pressure in the pressure chamber 30 is restored. As a result, the main valve body 1 stops rising and begins to descend toward the valve seat 32.

By the way, at this time, even if the handle 29 continues to be tilted, the main valve body 1 will not be disturbed because the starting rod 15 can move inside the cylindrical body 16 whose lower end 16b is in contact with the upper edge 26a of the push rod. You can descend without any trouble. Then, as shown in FIG. 6, the user sits down and closes the water passage port 31 to stop the flow of cleaning water. In this way, in the water-saving flush valve F that was previously filed by the present applicant, the main valve body 1 is automatically seated even if the handle is continuously operated, so that the maximum discharge amount of flushing water can be maintained at a predetermined level. dripping The amount of cleaning water to be discharged is determined by the time from when the main valve body 1 leaves its seat to when it seats itself again, and this is defined by the distance that the main valve body 1 rises. This rising distance is naturally determined by the distance traveled by the sub-valve body 2 from when it is tilted until it is seated again, that is, the length l from the upper edge 26a of the push rod to the lower end 16a of the cylinder body.

Incidentally, the amount of flushing water required varies greatly depending on the type of toilet bowl for which the flush valve is used. Therefore, in this water-saving flush valve F, depending on the model, the degree of threading between the sub-valve body 2 and the adjustment member 21 is adjusted in advance before assembly so that the starting rod 15 protrudes from the sub-valve body 2. Change the dimension L and move the cylinder from the upper edge 26a of the push rod to the lower end 16b of the cylinder.
By adjusting the length l up to the end, the amount of cleaning water discharged was controlled.

However, due to failure to obtain the specified water supply pressure, variations in the manufacturing and processing accuracy of the flush valve F itself, etc., the amount of cleaning water may differ from the planned amount.
The actual amount of washing water may differ, and it was necessary to readjust it after installing the flush valve F. To readjust, remove the cap 20 that makes up the ceiling of the pressure chamber 30, insert a screwdriver or the like into the inlet 22 of the head of the main valve body 1, and rotate the adjustment member 21 within the sub-valve body 2. I was going by letting it happen.

[Problem that the invention attempts to solve]

However, in the water-saving flush valve F previously filed by the present applicant, the starting rod 15 is attached to the sub-valve body 2 via the adjusting member 21. Moreover, when the adjusting member 21 and the starting rod 15 rotate together during use, the dimension L that projects from the sub-valve body 2 changes. The variation in this dimension L is
As mentioned above, the amount of washing water discharged during one washing operation varies, which is not preferable. Therefore, in the past, when the starting rod 15 is screwed onto the adjusting member 21 after the adjusting member 21 is screwed onto the sub-valve body 2, the screwing between the adjusting member 21 and the starting rod 15 is difficult. An adhesive such as an epoxy adhesive was applied to the joint to prevent the screwing position of the two from changing unnecessarily.

However, as shown in FIG.
2 ran down the circumferential surface of the starting rod 15, reached the sliding gap between the cylinder body 16 and the starting rod 15, and adhesively fixed the two. Therefore, during the cleaning operation, the cylindrical body 16 does not ride on the upper edge 26a of the push rod of the handle 29, and while the handle 29 is being operated, as shown in FIGS. 3 and 4,
If the sub-valve body 2 remains tilted or the lower end 16 of the cylinder body
b rides on the upper edge 26a of the push rod, and the sub-valve body 2 no longer descends. That is, while the handle 29 is being operated, the cleaning water supplied into the main valve body 1 through the water passage small hole 11 flows out from the outlet 17 to the secondary side passage 5 and flows into the pressure chamber 30. There will be no water supply. Therefore, the pressure in the pressure chamber 30 is restored after the handle operation is completed, the contact between the push rod 26 and the cylinder body 16 is released, and the sub-valve body 2 is seated. For this reason,
Depending on how long or short the operating time of the handle 29 is, the time during which the main valve body 1 is open varies, and the longer the operating time, the greater the amount of wasted flushing water. The drawback was that the water saving function was lost.

Further, the starting rod 15 and the cylinder 16 are both made of metal (brass), and a small gap is formed between them. This gap is extremely small. Therefore, after the water discharge test, the supply of cleaning water was stopped.
When the flush valve F is removed, the scale (particularly the chlorine component) contained in the water droplets remaining in the gap dries and solidifies, causing the starting rod 15 and the cylinder body 16 to stick together, resulting in the loss of the water-saving function described above. It was hot. This adhesion between the two was remarkable between the step portions 15a and 16a where the materials of the same quality were in direct contact with each other. In order to solve this problem, conventionally, after the water discharge test, the main valve body 1 and the sub-valve body 2 were taken out, the sliding part between the starting rod 15 and the cylinder body 16 was cleaned, and then they were reassembled. However, these tasks were extremely troublesome.

[Means for solving problems]

The present invention improves and eliminates the above-mentioned conventional problems, and aims to provide a valve structure in which the starting rod of the sub-valve body and the cylinder body are not in a fixed state. .

In order to solve the above-mentioned problems, the present invention adopts a means in which a hollow main valve body is housed in a valve chamber so as to be movable up and down, and an auxiliary valve is provided in the main valve body to close an outlet at the bottom of the main valve body. A water-saving flush valve is provided with a valve body, and a cylindrical body mounted on a starting rod of a sub-valve body so as to be able to rise and fall is positioned corresponding to a push rod of a handle, wherein the size of the starting rod protruding from the sub-valve body is The auxiliary valve body is directly inserted and screwed into the auxiliary valve body so that it can be adjusted freely, a shoulder part is formed on the upper part of the cylindrical body that projects in the inner diameter direction, and a split ring made of synthetic resin is attached to the lower short side of the starting rod. The shoulder portion and the split ring prevent the cylinder from coming off.

[Effect]

The starting rod is directly inserted and screwed into the sub-valve body.
There is no need to use adhesives like in the past. Further, the cylindrical body is prevented from coming off by a shoulder portion formed at the upper part of the cylindrical body and projecting in the radial direction, and a split ring attached to the lower end side of the starting rod. The split ring is
Since the cylindrical body is made of synthetic resin and the cylindrical body is made of metal, contact is made between different materials, so there is no possibility that the two will be stuck together due to the scale of the cleaning water.

〔Example〕

The configuration of the present invention will be explained below based on the embodiments shown in the drawings. Note that the same reference numerals as in the conventional case represent the same members.

FIG. 1 is a longitudinal sectional view showing the entire water-saving flush valve A according to an embodiment of the present invention. As shown in the figure, this flash valve A has an outer thread 39 formed on the head 35a of the starting rod 35 to be screwed into the inner thread 38 of the sub-valve body 2, and the sub-valve is opened from above the sub-valve body 2. It is inserted through body 2 and screwed on. A cylindrical body 36 having a shoulder 36a projecting inwardly on the upper side is fitted onto the starting rod 35 so as to be slidable from below, and a synthetic resin splitter is attached to the lower end of the starting rod 35. Ring 37 is attached. Split ring 37
By engaging with the shoulder portion 36a of the cylindrical body 36, the cylindrical body 36 is prevented from coming off.

In this way, by directly inserting and screwing the starting rod 35 into the sub-valve body 2, it is possible to omit the conventional adjusting member 21 shown in FIGS. 2 to 7.
Of course, the outer thread 39 of the starting rod 35 and the inner thread 38 of the sub-valve body 2 are threads for adjusting the amount of washing water, and no adhesive is applied thereto. Therefore, unlike conventional methods, it is not necessary to use adhesive when attaching the starting rod 35 to the sub-valve body 2, and there is no need to use adhesive to fix the starting rod 35 and the cylinder body 36 due to sagging of the adhesive. Impossible. In addition, the fitting relationship between the starting rod 35 and the cylinder 36 is such that the direct contact between them is between the synthetic resin split ring 37 attached to the starting rod 35 and the shoulder of the metal (brass) cylinder 36. 36a, and is a contact between different materials.
Therefore, even if the scale contained in the residual water droplets between the starting rod 35 and the cylindrical body 36 dries and solidifies after the water spouting test, the scale does not stick to the metal starting rod 35 and the synthetic resin split ring 37. will not stick.

Therefore, the cylindrical body 36 can freely move up and down with respect to the starting rod 35 in the state of use, and even if the handle 29 remains tilted during the cleaning operation of the handle 29, it will not immediately ride on the upper edge 26a of the push rod 26. The sub-valve body 2 is able to move downward in this riding state. Therefore, the sub valve body 2
is lowered by the biasing force of the spring 23 and closes the outlet port 17 of the main valve body 1. After that, the water supplied into the main valve body 1 through the small water passage hole 11 is supplied to the pressure chamber 30, and the pressure in the pressure chamber 30 is restored. Therefore, the main valve body 1 is seated and stops discharging cleaning water. In other words, the flush valve A exhibits its water saving function without losing its water saving function.

By the way, in the flush valve A of this embodiment, the amount of flushing water can be adjusted by removing the lid 20 and inserting a tool such as a screwdriver into the head 3 of the starting rod 35.
Insert the starting rod 35 into the groove 35b formed in 5a.
This is done by rotating the valve itself and adjusting the dimension L that protrudes from the sub-valve body 2. Thereby, the dimension 1 of the cylinder 36 that contacts the push rod 26 of the handle 29 can be changed, and the amount of washing water can be adjusted.

Note that the basic operating mode of the flush valve A is the same as in the conventional case, and a description thereof will be omitted here.

[Effect of idea]

As explained above, in the present invention, the starting rod is directly inserted and screwed into the sub-valve body, and no adhesive is used during this attachment. Therefore, there is no conventional accident where the adhesive drips and causes the starting rod and the cylinder to stick together. In addition, when attached to the starting rod, the metal cylinder is in direct contact with the split ring made of synthetic resin, which is a different material, and even if scale adheres to this part, the two will be stuck together. Never. Therefore, the cylindrical body can ride on the upper surface of the push rod during the cleaning operation, and the sub-valve body can move downward in this state.
Therefore, the flush valve of the present invention is capable of always discharging a set amount of flushing water regardless of how long the handle is being flushed, without losing its water-saving function. .

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view showing the entire water-saving flush valve according to an embodiment of the present invention, Figs. 2 to 7 are related to the prior art, and Fig. 2 shows the water-saving flush valve. Longitudinal cross-sectional views of Figures 3 to 6
The figure is a longitudinal sectional view illustrating the operating sequence of the valve, and FIG. 7 is a longitudinal sectional view of the same valve illustrating dripping of the adhesive. 3...Valve chamber, 1...Main valve body, 17...Main valve body outlet, 2...Sub-valve body, 35...Starting rod, 36...
Cylinder, 36a...Cylinder shoulder, 37...Split ring.

Claims (1)

[Scope of utility model registration request] A hollow main valve body is housed in the valve chamber so that it can be raised and lowered.
The main valve body is provided with a sub-valve body that closes the outlet at the bottom of the main valve body, and a cylindrical body attached to a starting rod of the sub-valve body so as to be able to rise and fall freely is positioned corresponding to the push rod of the handle. In the cylinder valve, the starting rod is directly inserted and screwed into the sub-valve body so that the dimension of the actuation rod protruding from the sub-valve body can be adjusted freely, and a shoulder portion protruding in the inner diameter direction is formed in the upper part of the cylinder body, and the starting rod 1. A water-saving flush valve structure, characterized in that a split ring made of synthetic resin is attached to the lower end side of the cylindrical body, and the shoulder portion and the split ring form a prevention for the cylindrical body from coming off.