JP2002004379A - On-off valve for flush toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-off valve for a flush toilet stool, which is free from an inconvenience after draining of the toilet stool. SOLUTION: A main water flow passage 11b and a sub-water flow passage 11c which connect an inlet port 11a and an outlet port 11d, respectively together are formed in a housing 11, and a main water flow passage 14b and a sub-water flow passage 14c which connect an inlet port 14a and an outlet port 14d, respectively, together are formed in a housing 14. Further, a piston 13, etc., which can open/close the main water flow passage 11b and the sub-water flow passage 11c are arranged in the housing 11, a piston 16, etc., which can open/close the main water flow passage 14b and the sub-water flow passage 14c are arranged in the housing 14. Bottom surfaces of the main water flow passages 11b and 14b are downward inclined toward the inlet ports 11a and 14a, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-off valve for a flush toilet.

[0002]

2. Description of the Related Art Conventionally, there has been known an on-off valve for a flush toilet which has a valve mechanism in a housing and is used for flush toilets such as Western-style flush toilets.

[0003] In this flush toilet bowl open / close valve, a water inlet port, a water outlet port and a water passage are formed in a housing. The water inlet port is connected to a water supply source, such as a low tank or a water pipe, to take in the washing water. The water discharge port is connected to the toilet body so as to discharge the washing water to the toilet body such as a Western-style toilet body. The water passage communicates with the water inlet port and the water outlet port, and the water passage can be opened and closed by a valve mechanism.

In this flush-type toilet valve, when the valve mechanism opens the water passage, washing water taken in from a water supply source through a water inlet port is discharged to the toilet body through a water outlet port. Washing becomes possible. Then, when the flushing of the toilet body is completed, the valve mechanism closes the water passage, and the discharge of the flush water to the toilet body is terminated.

[0005]

However, in the above-mentioned conventional on-off valve for flush-type toilets, since the bottom surface of the water passage is formed horizontally, the unused state is continued under low-temperature conditions such as a cold region. In such a case, even if the valve mechanism is opened to drain the washing water in the water passage and on the downstream side thereof, the washing water easily remains in the water passage. For this reason, in such a case, the washing water freezes in the water passage and may be damaged, or the next use may not be promptly performed, which may cause a problem in the next suitable use.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and has as an object to solve the problem of providing an on-off valve for a flush toilet which does not cause any inconvenience after draining.

[0007]

SUMMARY OF THE INVENTION A flush toilet switch valve of the present invention is connected to a water supply source, is connected to a water inlet port for taking in flush water, and is connected to a toilet body, and discharges the flush water to the toilet body. A housing in which a water outlet port and a water passage communicating with the water inlet port and the water outlet port are formed;

[0008] An on-off valve for a flush toilet having a valve mechanism provided in the housing and capable of opening and closing the water passage,

[0009] A bottom surface of the water passage is formed so as to descend toward the water inlet port or the water outlet port.

[0010] In the on-off valve for flush-type toilet of the present invention, the bottom surface of the water passage is formed downward toward the water inlet port or the water discharge port, so that the unused state is kept under low temperature conditions such as a cold region. In such a case, if the valve mechanism is opened to drain the washing water in the water passage and downstream of the water passage, the washing water in the water passage flows out toward the water inlet port or the water discharge port, and enters the water passage. No washing water remains. Therefore, in such a case, freezing of the washing water in the water passage is prevented.

[0011] Therefore, according to the on-off valve for flush toilet of the present invention, the next use can be performed promptly without drainage damage due to freezing of the washing water after drainage, so that it is suitable for the next suitable use. Does not cause any inconvenience.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. In the embodiment, an on-off valve for a flush toilet (hereinafter simply referred to as an "on-off valve") is shown in FIG.
It is used for the Western-style flush toilet shown in the figure below.

This Western-style flush toilet is provided with a toilet flushing device 2 in a Western-style toilet body 1 made of ceramic. A flexible hose 3 is connected to the toilet flushing device 2, and the flexible hose 3 is connected to a water pipe 5 as a water supply source via a water stopcock 4.

As shown in FIG. 2, the toilet flushing device 2 includes a jet opening / closing valve 6 connected to the flexible hose 3.
An on-off valve 7 for a rim fixed integrally with the on-off valve 6,
It has a cam device 8 fixed to the upper ends of the on-off valves 6 and 7, and a motor device 9 that drives the cam device 8 adjacent to the cam device 8. The motor device 9 is electrically connected to the controller 10.

In the on-off valve 6 for the jet, as shown in FIG. 3, a water inlet port 11a communicating with the flexible hose 3 is opened on a side surface of the vertically long housing 11. A main water passage 11b communicating with the water inlet port 11a is provided in the housing 11 in the width direction.
A sub-water passage 11c that extends upward and then bends forward is connected to the center of 1b. The sub water passage 11c communicates with a water discharge port 11d opened on the front surface of the housing 11. The main water passage 11b and the sub water passage 11c are water passages.

A piston chamber 11e extending downward is communicated with the center of the main water passage 11b, and the main water passage 11b and the sub water passage 11c are communicated by the pressing spring 12 into the main water passage 11b and the piston chamber 11e. The piston 13 which can open and close the communication of is provided slidably. These pistons 13
The pressing spring 12 is a valve mechanism.

A shaft 21 extending upward is fixed to the piston 13, and the shaft 21 projects upward through an O-ring 22 between the shaft 21 and the housing 11. The shaft 21 comes into sliding contact with the cam of the cam device 8 shown in FIG.

In the rim on-off valve 7, as shown in FIG. 3, a water inlet port 14 a communicating with the main water passage 11 b of the jet on-off valve 6 is opened on the side surface of the vertically long housing 14. In addition, the water inlet port 1
A main water passage 14b communicating with 4a is recessed in the width direction, and a sub water passage 14c that extends upward and then bends forward is connected to the center of the main water passage 14b. The sub water passage 14c communicates with a water outlet port 14d opened on the front surface of the housing 14. The main water passage 14b and the sub water passage 14c are water passages.

A piston chamber 14e extending downward is communicated with the center of the main water passage 14b, and the main water passage 14b and the sub water passage 14c are communicated between the main water passage 14b and the piston chamber 14e by a pressing spring 15. A piston 16 capable of opening and closing the communication of is provided slidably. These pistons 16
The pressing spring 15 is a valve mechanism.

A shaft 23 extending upward is also fixed to the piston 16, and this shaft 23 projects upward through an O-ring 24 between itself and the housing 14. The shaft 23 also comes into sliding contact with another cam of the cam device 8 shown in FIG.

The on-off valve 6 for a jet shown in FIG.
2 is connected to a jet conduit 17 as shown in FIG. 2, and the jet conduit 17 is connected to a jet nozzle (not shown) provided in the Western-style toilet body 1 as shown in FIG. I have. The water outlet port 14d of the rim on-off valve 7 shown in FIG. 3 is, as shown in FIG.
The rim conduit 18 is connected to a rim water passage (not shown) of the Western-style toilet body 1 as shown in FIG.

As shown in FIG. 3, the jet opening / closing valve 6 and the rim opening / closing valve 7 have a characteristic structure in which the bottom surfaces of the main water passages 11b and 14b are arranged with respect to the horizontal plane. Is formed at a small angle θ toward the water inlet port 11a of the on-off valve 6.

In the Western-style flushing toilet constructed as described above, the cam device 8 is operated by inputting a switch. As a result, first, the shaft 23 of the rim on-off valve 7 lowers the piston 16, and the main water passage 14b and the sub water passage 14c
Open communication with Thereby, a large amount of water flows into the rim water passage of the Western-style toilet body 1, and the toilet bowl is washed. Next, the piston 16 rises due to the urging force of the pressing spring 15, and the communication between the main water passage 14b and the sub water passage 14c is closed.

Then, the shaft 21 of the jet on-off valve 6 lowers the piston 13 to open the communication between the main water passage 11b and the sub water passage 11c. As a result, a large amount of water flows to the jet nozzle of the Western-style toilet body 1, forcing a siphon effect. Next, the piston 13 rises due to the urging force of the pressing spring 12, and the communication between the main water passage 11b and the sub water passage 11c is closed.

Thereafter, the shaft 23 of the rim on-off valve 7 lowers the piston 16 again to open the communication between the main water passage 14b and the sub water passage 14c. Thereby, a large amount of water flows into the rim water passage of the Western-style toilet body 1, and the water is sealed. Next, the piston 1
6 rises to close the communication between the main water passage 14b and the sub water passage 14c. Thus, a series of washing of the Western-style toilet body 1 is completed.

In a case where the unused state is continued under a low temperature condition in a cold region or the like, after closing the main plug of the water pipe, a drain pipe (not shown) is opened. Thereafter, the cam device 8 is operated manually or by input of a switch, and the shaft 21 of the on-off valve 6 for the jet and the on-off valve 7 for the rim,
23, the pistons 13 and 16 are lowered, and the main waterway 1
The communication between 1b, 14b and the sub water passages 11c, 14c is opened. Thereby, the main waterway 11b, 14b and the sub-waterway 1
The drainage of the cleaning water in 1c and 14c and on the downstream side is performed.

At this time, the on-off valve 6 for the jet and the on-off valve 7 for the rim are formed such that the bottom surfaces of the main water passages 11b and 14b are formed downward toward the water inlet port 11a. The water flows out toward the port 11a, and no cleaning water remains therein. The washing water guided to the water inlet port 11a flows back through the flexible hose 3 and the water stopcock 4 and is discarded into the ground via a drain pipe. Therefore, in such a case, no washing water remains in the main water passages 11b and 14b and the sub water passages 11c and 14c, and freezing of the washing water there is prevented.

When the Western-style flush toilet is to be used next time, the drainage pipe is closed and the main tap of the water pipe is opened. As a result, the flush water in the water pipe 5 is supplied to the toilet flushing device 2 via the water stopcock 4 and the flexible hose 3, and normal use becomes possible.

Therefore, according to the on-off valve 6 for the jet and the on-off valve 7 for the rim of the embodiment, after the water is drained, no damage is caused by freezing of the washing water, and the next use can be performed promptly. It does not cause inconvenience for the next suitable use.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a Western-style flushing toilet according to an embodiment.

FIG. 2 is a schematic front view of a toilet flushing device according to the Western-style flush toilet of the embodiment.

FIG. 3 is a cross-sectional view of an on-off valve for a jet and an on-off valve for a rim according to the western-style flush toilet of the embodiment.

[Explanation of symbols]

5 ... water supply source (water pipe) 11a, 14a ... water inlet port 1 ... toilet body (Western style toilet body) 11d, 14d ... water outlet port 11b, 14b, 11c, 14c ... water passage (11b, 1)
4b: main water passage, 11c, 14c: sub water passage) 11, 14: housing 12, 13, 15, 16 ... valve mechanism (12, 15: pressing spring, 13, 16: piston)

Claims (1)

[Claims] 1. A water inlet port connected to a water supply source for taking in flush water, a water outlet port connected to a toilet body for discharging the wash water to the toilet body, and communicating between the water inlet port and the water outlet port. A flush toilet bowl opening / closing valve having a housing having a water passage formed therein, and a valve mechanism provided in the housing and capable of opening and closing the water passage, wherein a bottom surface of the water passage is provided with the water inlet port or the water outlet. An on-off valve for a flush toilet characterized by being formed downward toward a port.