JPH0240136Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a flush valve operating valve for remotely controlling a flush valve used as a water supply device such as a flush toilet.

[Prior art and its problems] The applicant of this application has filed Japanese Patent Application No. 58-87247 (Japanese Patent Publication No.
63-63694), even if a person who is not accustomed to operating a flash valve operates the valve for a long time, the flash valve will be remotely operated after a predetermined period of time regardless of the length of time the person continues to operate the valve. We have proposed an operating valve for flush valves that completes the following operations.

As shown in FIG. 2, the feature of the conventional operating valve 1 for flush valves is that the operating force is transmitted to the outflow chamber side end of the valve stem 3 via a damper joint 2 consisting of a combination of a cylinder chamber 2a and a piston 2b. In addition to connecting the member 4, the cylinder chamber 2a of the damper joint 2 and the inlet chamber 5 are communicated through a throttle passage 6. More specifically, the inside of the casing 7 of the flush valve operation valve 1 is fitted with a bush 8.
It is separated into an inflow chamber 5 and an outflow chamber 9 by a partition wall 8a. The partition wall 8a of the bush 8 includes both chambers 5,
A valve port 10 communicating with 9 is opened. A valve body 11 is provided at the end of the valve rod 3 inserted into the valve port 10 on the inlet chamber side. The valve body 11 is biased by a spring 12 to the valve port 10 . A piston 2b of the tamper joint 2 is disposed on the outflow chamber side of the valve stem 3.
is formed. The piston 2b is slidably inserted into a cylinder chamber 2a formed in the operating force transmitting member 4. The operating force transmission member 4 is
It is slidably inserted into the bush 8 and is biased by a spring 13 in the direction of arrow A as required. The valve stem 3 includes a throttle passage 6 (for example, a diameter
0.5 mm and length 10 to 45 mm) are drilled.

Next, the conventional flush valve operating valve 1
Explain the operation. Flush valve operation valve 1
The inflow chamber 5 and the pressure chamber 16 of the flush valve main body 15 are connected by a pipe 17, and the outflow chamber 9 and the discharge chamber 18 of the flash valve main body 15 are connected by a pipe 19. When the operating force transmitting member 4 is pressed in the direction of arrow B against the spring bias 13, the pressing force is transmitted to the valve stem 3 via the damper joint 2, and as shown in FIG.
As shown, the valve stem 3 is moved in the direction of arrow B against the spring bias 12. As the valve stem 3 moves in the direction of arrow B, the valve body 11 opens the valve port 10, and the pressure chamber 16 and discharge chamber 18 of the flush valve body 15 open.
and communicate with each other. Flash valve body 15
As the internal pressure of the pressure chamber 16 decreases, the water supply chamber 2
The piston valve 25 is instantly pushed up into the pressure chamber 16 by the high water pressure of step 3, and the valve port 26 is opened to start flushing. Further, the operating valve 1 for the flush valve is located in the cylinder chamber 2a of the damper joint 2.
Since a compressive force corresponding to the repulsion elastic force of the spring bias 12 is generated within the cylinder chamber 2a, the water filled in the cylinder chamber 2a flows through the throttle passage 6 to the inflow chamber 5 in a low static pressure state.
gradually flows out. The outflow of water from the cylinder chamber 2a causes the piston 2b to gradually enter the cylinder chamber 2a. Then, after a predetermined period of time (for example, 2 seconds) has elapsed from the start of the flush, the valve body 11 closes the valve port 10 (not shown), so the pressure chamber 16 of the flush valve body 15 becomes sealed. Next, when the pressing force of the operating force transmitting member 4 is released, the high pressure water in the inflow chamber 5 flows into the cylinder chamber 2a of the damper joint 2 through the throttle passage 6 and moves the operating force transmitting member 4 as indicated by the arrow A. direction and return to the standby state (see FIG. 2A). Note that the flash valve main body 15 is connected to the throttle inlet passage 24.
As water gradually flows into the pressure chamber 16 through the piston valve 25, the piston valve 25 falls under its own weight and closes the valve port 26 after a predetermined period of time has elapsed.

However, in the conventional flush valve operation valve 1, air often remains in the reservoir area of the cylinder chamber 2a of the damper joint 2 during piping. When the operating force transmitting member 4 is pushed in the direction of arrow B in the flush valve operation valve 1 with air remaining in the cylinder chamber 2a, the initial pushing is spent compressing the remaining air. , the valve stem 3 reaches arrow B only when the pushing amount is greater than a predetermined amount.
However, in this case, the predetermined movement amount of the valve body 11 cannot be secured, and the opening time of the valve port 10 becomes short, and as a result, the flash valve main body 15 cannot be completely flushed.

[Object of the invention] In order to solve the above-mentioned drawbacks, the present invention aims to provide an operating valve for a flash valve that can avoid the situation where air remains in the reservoir area of the cylinder chamber.

[Structure of the invention] The gist of the invention is that the partition wall that separates the inside of the casing into an inflow chamber and an outflow chamber has a valve port that communicates with both chambers, and that the end of the valve rod inserted into the valve port on the inflow chamber side The valve body is provided with a valve body biased toward the valve port, and the operating force transmission member is connected to the end of the valve stem on the outflow chamber side via a damper joint made of a combination of a cylinder chamber and a piston. The operating force transmitting member is biased in a direction in which the piston exits from the cylinder chamber, and the cylinder chamber and the inflow chamber are connected to each other through a throttle passage. One end of the vent valve is open.

With this configuration, during piping, it is possible to fill the reservoir area of the cylinder chamber with water using the air bleed valve, and it is possible to obtain a cylinder chamber free of residual air.

[Description of Embodiments] The present invention will be described below based on the embodiment shown in FIG. The main improvement of the flash valve operating valve 20 is that one end of the air bleed valve 21 is opened to the reservoir area of the cylinder chamber 2a. This air bleed valve 21 may be of an appropriate type, such as a screw type, which can be sealed with water after air is bleed. Note that a decorative cover 22 that covers the other end of the air vent valve 21 is attached to the pressed surface of the operating force transmission member 4 as necessary.

[Operation] Next, the operation of the flush valve operation valve is
Description will be given based on the embodiment shown in the figures. Connection piping 1
7, 19 completed flash valve operation valve 2
When the air vent valve 21 of No. 0 is opened, the water in the water supply chamber 23 of the flush valve main body 15 flows through the throttle inlet passage 24, the pressure chamber 16, the connecting pipe 17, the inlet chamber 5 of the flush valve operating valve 20, and the water in the water supply chamber 23 of the flush valve main body 15. It passes through the throttle passage 6 and is guided to the cylinder chamber 2a, filling the cylinder chamber 2a with water. cylinder chamber 2
When the inside of a is filled with water and water begins to leak from the air vent valve 21, the air vent valve 21 is placed in a water-sealed state and the piping is completed. When a person presses the operating force transmitting member 4 in the direction of arrow B against the spring bias 13, the pressing force is immediately transmitted to the piston 2b and the valve stem 3 through the water filled in the cylinder chamber 2a. , the valve stem 3 is moved in the direction of arrow B against the spring bias 12 to open the valve port 10. With the opening of the valve port 10, the pressure chamber 16 and the discharge chamber 18 of the flush valve main body 15 come into communication, and flushing starts. When the operating force transmission member 4 is in the pressed state, the operating valve 20 for the flash valve generates a compressive force corresponding to the repulsion elastic force of the spring bias 12 in the cylinder chamber 2a of the damper joint 2. The water filled inside gradually flows out through the throttle passage 6 into the inlet chamber 5 where the static pressure is low. The outflow of water from the cylinder chamber 2a causes the piston 2b to gradually enter the cylinder chamber 2a. Then, a predetermined period of time (for example,
2 seconds), the valve body 11 closes the valve port 10 (not shown), so the flash valve body 1
The pressure chamber 16 of No. 5 is brought into a sealed state. Next, when the pressing force of the operating force transmitting member 4 is released, the high pressure water in the inflow chamber 5 flows into the cylinder chamber 2a of the damper joint 2 through the throttle passage 6 and moves the operating force transmitting member 4 as indicated by the arrow A. direction and return to the standby state (see FIG. 1A). Note that the flush valve main body 15 allows water to enter the pressure chamber 16 via the throttle inlet passage 24.
As the water gradually flows into the interior, the piston valve 25 is lowered by its own weight, and the valve port 26 is closed after a predetermined period of time has elapsed.

[Effects of the invention] As described in detail above, the operating valve for a flush valve according to the invention can use the air bleed valve to fill the reservoir area of the cylinder chamber with water during piping, so the operating force is reduced. Since the valve body moves substantially simultaneously with the push-in operation of the transmission member, and a constant valve opening time is always obtained, this has the practical effect of ensuring stable flushing operation of the flushing valve.

[Brief explanation of the drawing]

FIGS. 1A and 1B are vertical cross-sectional views of essential parts of a flush valve operating valve according to the present invention, and FIGS. 2 A and B are longitudinal cross-sectional views of essential parts of a conventional flush valve operating valve. 2... Damper joint, 3... Valve stem, 4... Operating force transmission member, 5... Inflow chamber, 6... Throttle passage, 7
... Casing, 8a ... Partition wall, 9 ... Outflow chamber,
10...Valve port, 12...Spring bias, 13...Spring bias, 21...Air bleed valve.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A valve port that communicates with both chambers is provided in the partition wall that separates the inside of the casing into an inflow chamber and an outflow chamber, and the end of the valve rod inserted into the valve port on the inflow chamber side is provided with a valve body biased toward the valve port, and an operating force transmitting member is connected to the end of the valve stem on the outflow chamber side via a damper joint consisting of a combination of a cylinder chamber and a piston, and An operating valve for a flush valve in which a chamber and the inflow chamber are communicated through a throttle passage, wherein one end of the air release valve is opened to a reservoir area of the cylinder chamber. 2. The operating valve for a flush valve according to claim 1, wherein the operating force transmitting member is biased in a direction in which the piston comes out from the cylinder chamber.