JPH0421897Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a water-saving flush valve capable of adjusting the amount of flushing water discharged.

[Conventional technology]

FIG.
This figure shows the structure of a conventional water-saving flush valve F described in Japanese Patent No. 53356. The flush valve F is configured such that the main valve body 1 moves up within the valve chamber 3, thereby communicating the primary side passageway 4 and the secondary side passageway 5. The main valve body 1 has a hollow cylindrical shape, and a guide portion 14 for guiding up and down is provided on the bottom surface of the main valve body 1. A small water passage hole 11 is bored at an appropriate position on the side, and a strainer 12 is attached to the outer periphery of the side. In addition, 10, 13
Both are Patsukin.

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 biased by a spring 23 to close the outlet port 17 at the bottom of the main valve body 1 . An adjustment member 21 having a groove 21a carved in its head is screwed into a through hole provided in the center of the sub-valve body 2, and a starting rod 15 is screwed onto the adjustment member 21 and protrudes from the outlet port 17. ing. and,
The cylindrical body 16 is fitted onto the starting rod 15 so as to be vertically movable, and the outer periphery of the end of the starting rod 15 and the cylindrical portion 16
Steps 15a and 16a formed on both inner circumferential surfaces of the holder prevent them from coming off. Further, 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 circumferential surface of the side of the main valve body. .

Next, the operation of the water-saving flush valve F will be explained. First, in order to discharge the cleaning water, the fourth
When the handle 29 is tilted as shown in FIG.
It moves guided by 8 and hits the side of the cylinder 16.
As a result, the sub-valve body 2 is tilted and separated from the gasket 25, and the outlet port 17 is opened. Then, the water in the upper water chamber 30 of the main valve body 1 flows into the inlet 2 of the head of the main valve body 1.
2 to the secondary side water passage 5, and the pressure in the upper water chamber 30 decreases, so that the main valve body 1 rises within the valve chamber 3 and flows into the water passage 31, as shown in FIG. 4b.
is opened, and the wash water flows from the primary side passageway 4 to the secondary side passageway 5.

The cylinder body 16 is pushed by the push rod 26 by the handle operation, and while the sub-valve body 2 is tilted, the main valve body 1 continues to rise, but as shown in FIG. 4c, the cylinder body 16
When the lower end 16b of the push rod 26 passes over the upper surface 26a of the push rod 26, 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 in from the small water passage hole 11 on the side of the main valve body, passes through the main valve body 1, and is supplied to the upper water chamber 30, thereby restoring the pressure in the water chamber 30. As a result, the main valve body 1 stops rising and the valve seat 3
2 and start descending.

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 cylinder 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. 4d, the person is seated and the water passage port 31 is closed to stop the flow of washing water. In this way, the water-saving flush valve F is
Since the main valve body 1 is automatically seated even if the handle operation is continued, the maximum discharge amount of cleaning water is kept constant.

[Problem that the invention attempts to solve]

The amount of flushing water discharged in the above-mentioned water-saving flush valve is determined by the time from when the main valve body 1 is unseated to when it is seated again. Ru. The rising distance is naturally determined by the distance the sub-valve body 2 moves from being tilted until it is seated again, that is, the length from the upper edge 26a of the push rod to the lower end 16b 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 the above-mentioned conventional water-saving flush valve F, depending on the model,
Before assembly, the degree of screwing between the sub-valve body 2 and the adjusting member 21 is changed in advance, and the lower end 1 of the cylinder is adjusted from the upper edge 26a of the push rod.
By adjusting the length up to 6b, the discharge amount of washing water was adjusted.

However, due to factors such as not being able to obtain the specified water supply pressure or variations in the manufacturing and processing accuracy of the flush valve itself, there may be a discrepancy between the planned amount of washing water and the actual amount of water.
In such cases, readjustment will be required after construction. In the above-mentioned conventional water-saving flush valve F, the cap 20 constituting the ceiling of the upper water chamber 30 is removed, a screwdriver or the like is inserted into the inlet 22 of the head of the main valve body 1, and the adjusting member 21 is adjusted. Readjustment was performed by rotating the sub-valve body 2. However, since the sub-valve body 2 and the seal retainer 24 have a structure as shown in FIG. 5 when viewed from above, when the adjustment member 21 is turned, the sub-valve body 2 rotates together, and as a result, the adjustment becomes impossible. I had a problem where I couldn't work at all.

[Means for solving problems]

The present invention prevents the rotation of the sub-valve body by using a gasket retainer that fixes the gasket between the sub-valve body and the bottom of the main valve body, thereby adjusting the amount of cleaning water discharged. It is intended to make it easier. The solution to the above problem in the present invention is a valve chamber in which a hollow main valve body is housed so as to be movable up and down, and a sub-valve body is provided inside the main valve body to close an outlet at the bottom of the main valve body. In the valve, an adjustment member is screwed into the center of the sub-valve body so as to be movable up and down, and the actuation member protrudes from the bottom of the sub-valve body, passes through the outlet of the main valve body, and extends downward from the main valve body. A cylindrical body with which a push rod comes into contact when the valve body is activated is suspended from the lower end of the activation rod and is movable up and down. This can be changed by changing the screwing position of the valve body, and the sub valve body is made non-circular in plan view, and a packing interposed between the bottom of the main valve body and the sub valve body is fixed. An engaging portion that engages with the non-circular side surface of the sub-valve body is provided on the inner surface of the packing holder.

[Effect]

By forming a non-circular shape in plan view with the sub-valve body and providing an engagement portion with the non-circular side surface of the sub-valve body on the inner surface of the packing holder, the rotation of the sub-valve body around the axis is controlled by the gasket. This is prevented by the engaging portion of the presser foot. Therefore, since the sub-valve does not rotate when the adjusting member screwed onto the sub-valve is rotated, the amount of flushing water can be easily adjusted even after the flush valve is assembled. can.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1a is a longitudinal sectional view of the main valve body 1 in which the sub-valve body 2 is provided. In the figure, members common to those of the conventional example are given the same reference numerals.

The feature of the present invention lies in the engagement structure between the side surface of the sub-valve body 2 and the inner surface 24a of the seal retainer 24. That is, as shown in FIG. 1B (strainer 12 is omitted), which is a plan sectional view taken along line B-B in FIG. The inner surface 24 of the packing presser foot 24
A locking protrusion 40 is provided at a position corresponding to each side of the hexagon in a. With this configuration, the rotation of the sub-valve body 2 around the axis is controlled by the seal presser 2.
It is blocked by the locking protrusion 40 of No. 4. In the embodiment shown in the same figure, the locking projections 40 do not necessarily have to be provided on all sides of the hexagon, but if they are provided at at least one location, the locking projections 40 can be provided at at least one location.
It is possible to prevent the rotation of the

2a to 2c show an embodiment of another aspect of the present invention. In the figure a, a part of the circular bottom side surface 2a of the sub-valve body 2 is cut out to form a flat part 50,
The flat part 5 is formed on the inner surface 24a of the packing presser 24.
By forming an engaging surface 41 corresponding to 0, rotation is prevented. In addition, in FIG. 1B, both the bottom side surface 2a of the sub-valve body 2 and the inner surface 24a of the seal retainer 24 are formed into an elliptical shape when viewed from above. Furthermore, in FIG. 1c, a protrusion 51 is provided on the side surface 2a of the hem part of the sub-valve body 2, and an engagement recess 41 is formed in a part of the inner surface 24a of the seal retainer 24, into which the protrusion 51 is fitted. You can also do it.
In this way, the present invention can be modified as appropriate depending on the mode of implementation.

[Effect of idea]

As is clear from the above description, according to the present invention, even if the adjusting member is rotated, the sub-valve body does not rotate together, so it is easy to adjust the amount of cleaning water discharged after construction. Therefore, an appropriate amount of flushing water is supplied depending on the type of toilet bowl, so that not only excellent cleaning effects but also water saving effects can be obtained. In this manner, the present invention provides a highly practical water-saving flush valve structure.

[Brief explanation of the drawing]

Figures 1a and b relate to the present invention, and
Figure a is a longitudinal cross-sectional view showing the valve structure of the water-saving flush valve, and figure b is a plan cross-sectional view taken along line B--B in figure a. FIGS. 2a to 2c relate to another embodiment of the present invention, and each is a plan sectional view showing the engagement structure between the sub-valve body and the seal retainer. Figures 3 to 5 show conventional water-saving flush valves, in which Figure 3 is a vertical cross-sectional view of the water-saving flush valve, and Figures 4 a to d are vertical cross-sections for explaining the operation. Figure 5 is V-V of Figure 3.
FIG. F... Water-saving flush valve, 1... Main valve body, 2... Sub-valve body, 2a... Bottom side surface, 3... Valve chamber, 17... Outlet, 21... Adjustment member, 24...
...Packing foot, 24a...Inner side of packing presser, 25...Packing foot.

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.
In a flash valve in which a sub-valve body is provided in the main valve body for closing an outlet at the bottom of the main valve body, an adjustment member is screwed into the center of the sub-valve body so as to be movable up and down. A starting rod is attached that protrudes from the bottom of the valve body, passes through the outlet of the main valve body, and extends downward from the main valve body, and a cylindrical body with which the push rod comes into contact when the valve body is started hangs down from the lower end of the starting rod. The actuating rod is mounted so as to be movable up and down, and the protruding length of the activation rod can be changed by changing the screwing position of the adjustment member to the sub-valve body, and the sub-valve body is non-standard when viewed from above. An engaging portion that engages with a non-circular side surface of the auxiliary valve body is provided on the inner surface of the seal holder, which is formed into a circular shape and fixes the gasket interposed between the bottom of the main valve body and the auxiliary valve body. The valve structure of the water-saving flush valve is characterized by: