JPH08277561A - Changeover valve for flushing toilet bowl - Google Patents

Abstract

PURPOSE: To obtain a changeover valve capable of being compactly formed and having large reliability. CONSTITUTION: A low-tank side water supply port 46 is formed on the upstream side and a jet-side water supply port 60 on the downstream side in the main body 41 of a changeover waive 40. A valve body 47 closing the low-tank side water supply port 46 through a diaphragm 49 moved by water pressure when the jet-side water supply port 60 is opened is interiorly finished into the main body 41. A pilot valve 51 closing a watercourse under the state, in which a float 61 is lifted to an uppermost section, and opening the watercourse by the lowering of the float 61 and an upper valve 53 being disposed on the downstream side of the pilot valve 51, being interlocked with a drain valve 7 and opening the watercourse under the state, in which the drain valve 7 is opened, and closing the watercourse under a closed state are installed into the watercourse from the low-tank side water supply port 46 to the jet-side water supply port 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching valve for switching between water supply to a jet ejection hole on the toilet body side and water supply to a low tank.

[0002]

2. Description of the Related Art Conventionally, as a switching valve configured to supply tap water into a low tank and switch tap water to a jet ejection hole on the side of the toilet body, for example, Japanese Patent Laid-Open No. 4-327079. However, there is a problem that the conventional switching valve has a complicated structure and is electrically controlled to open and close, and a failure may occur, resulting in high cost. There was a point.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned problems of the prior art, and an object thereof is to provide a switching valve which can be compactly molded with few failures, and the gist thereof is a toilet bowl. A switching valve for switching between water supply to a jet outlet on the main body side and water supply to a low tank, wherein the switching valve includes a low tank side water supply port opened in the low tank and a jet side opened in the jet outlet side. A main body having a water supply port is formed, and a valve body for closing the low tank side water supply port via a diaphragm that moves by water pressure when the jet side water supply port is opened is provided in the main body. , In the water passage from the low tank side water supply port side to the jet side water supply port, interlocking with a float that moves up and down according to the water level in the low tank, And a pilot valve that opens the water channel by lowering the float and a drain valve that is disposed downstream of the pilot valve and drains the water stored in the low tank.The drain valve opens the water channel when the drain valve is open, and the water channel when the drain valve is closed. The closing upper valve is provided.

[0004]

[Operation] When the user opens the drain valve when the water in the low tank is full, the water in the low tank is drained into the toilet body. At this time, the upper valve is open but the pilot valve is open. Is closed because the float is in the highest position, so the jet side water supply port is closed and only the low tank side water supply port is opened.When the drain valve is opened, the water is supplied from the low tank side water supply port to the low tank. Water is supplied. After that, when the water level drops due to the drainage in the low tank, the float drops, and the pilot valve is thereby opened, so that tap water is supplied from the jet side water supply port toward the jet ejection hole of the toilet body. At this time, the valve body is moved by the water pressure through the diaphragm, and the low tank side water supply port is closed by the valve body.
Tap water is supplied only to the jet side water supply port. When the drainage valve is closed after the drainage of the stored water in the low tank is completed with the passage of time, the upper valve is closed, so that the jet side water supply port is closed and the water supply to the jet ejection hole is completed. At this time, since the water pressure on the jet side water supply port side disappears, the valve body opens to open the low tank side water supply port, and tap water is supplied into the low tank. In this way, the valve body that opens and closes with the diaphragm, the pilot valve that opens and closes with the float, and the upper valve that opens and closes with the drain valve can be compactly installed inside the main body, and the whole can be formed compactly. Since the valve can be controlled to open and close by mechanically interlocking with the float and drain valve instead of opening and closing, it becomes a highly reliable switching valve.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a toilet bowl. A ball portion 2 is formed in the toilet body 1, and a jet ejection hole 3 is opened at the bottom of the ball portion 2. The jet ejection hole 3
Is opened toward the inlet side of the trap portion 4, and a large number of rim holes 5a, 5a, 5a for letting out washing water into the ball portion 2 are formed above the ball portion 2. A rim water passage 5 is formed. In addition, a low tank 6 for storing flush water is provided behind the upper part of the toilet body 1.
Is installed upright, and the valve seat 6 is provided at the bottom of the raw tank 6.
a is disposed, a drain valve 7 is provided on the valve seat 6a, and the drain valve 7 is connected to a lever (not shown) provided on the wall surface of the low tank 6 via a ball chain, and after use. When the user operates the lever, the drain valve 7 is pulled upward through the ball chain to open the valve seat 6a, whereby the stored water in the low tank 6 is flown into the rim water passage 5.
The cleaning water is made to flow down to the ball portion 2 so that the ball portion 2 can be cleaned.

A switching valve 40 is provided in the raw tank 6, and a tap pipe 9 is externally connected to the switching valve 40 to supply tap water. And a jet conduit 11 having the other end connected to the jet ejection hole 3 is formed of a pipe or the like.
The tap water supplied from the water pipe 9 is configured to be supplied to the jet ejection hole 3 through the jet conduit 11, and the tap water is vigorously ejected from the jet ejection hole 3 toward the entrance of the trap 4. As a result, a siphon phenomenon occurs in the trap 4, and the dirt in the ball portion 2 can be satisfactorily pulled out and discharged.

2 to 5, the switching valve 40 provided in the raw tank 6 will be described.
In the water guide port 42 on the upstream side of the main body 41, which is a component of the main body 41, there is a ball tap opening / closing valve (not shown) on the upstream side, and tap water introduced into the water guide port 42 is formed horizontally. A vertical water channel 44 that is formed in the main body 41 in a hanging shape by branching from the horizontal water channel 43 while passing through the water channel 43.
The valve seat portion 45 is formed in the vertical water channel 44, and the lower end of the vertical water channel 44 serves as a low tank side water supply port 46 opened in the low tank 6. A valve body 47 abuts on the valve seat portion 45 so as to be opened and closed laterally. The valve body 47 is connected to a diaphragm 49 via a guide rod 48, and the diaphragm 49 is a pressure chamber 50.
It is arranged inside.

A seat portion 52 is formed in the lateral water passage 43, and the seat portion 52 is provided with a pilot valve 51 (diaphragm valve) which moves up and down to open and close the seat portion 52.
The pilot valve 51 is connected to a float 61 that moves up and down depending on the water level W in the raw tank 6. An upper valve 53 (diaphragm valve) is provided on the downstream side of the seat portion 52. The upper valve 53 moves up and down to open and close the seat portion 54, and the upper valve 53 is directed upward. A projecting rod 55 is formed so as to project outward, and a cantilever bar 57 can come into contact with the upper end of the projecting rod 55. The cantilever bar 57 can swing through a fulcrum 56 and A ball chain 29 is connected to the other end of the holding bar 57,
A drain valve 7 is connected to the lower end of the ball chain 29, and the drain valve 7 opens and closes a valve seat 6a formed on the bottom surface of the raw tank 6. Further, a hanging path 58 is formed in a hanging shape from the seat portion 54, and a lower end portion of the hanging path 58 is a jet side water supply port 60. The jet side water supply port 6
0 is connected to the jet water conduit 11 so that tap water can be supplied to the jet ejection hole 3 side. Also,
An opening 59 communicates with the pressure chamber 50 side in the drooping path 58.
Are formed.

The state shown in FIG. 2 is a state in which the user operates the operation lever provided on the side wall surface of the low tank 6 to pull up the ball chain 29, and the ball chain 29 is pulled up to drain water. The valve 7 is separated from the valve seat 6a, so that the water stored in the low tank 6 is discharged from the valve seat 6a to the rim water passage 5
It flows inward, and further flows down into the ball portion 2 from the rim hole 5a. At this time, the cantilever bar 5
7 moves up, the upper valve 53 rises, and the seat portion 54 is opened.
In the state of FIG. 2, the low tank 6 is full of water, and the float 61 is rising, so the pilot valve 51 closes the seat portion 52, and therefore, in the state of FIG.
The tap water introduced from the water guide port 42 is guided from the lateral water channel 43 to the vertical water channel 44, and the tap water pushes the valve element 47 to the right to pass through the valve seat portion 45 to pass from the low tank side water supply port 46 to the low tank 6 It will be leaked inside. Therefore, when the user operates the operation handle, the stored water in the low tank 6 is discharged into the rim water passage 5 and the ball portion 2, and the tap water is supplied from the low tank side water supply port 46 to the low tank 6.
Water will be supplied inside.

In this state, when the water level W in the low tank 6 drops due to drainage, the pilot valve 51 moves downward as the float 61 descends, and the seat 52 is opened, as shown in FIG. In this state, as shown in FIG. 3, tap water is guided from the water inlet 42 through the lateral water passage 43 to the drooping passage 58, is supplied from the jet side water inlet 60 to the jet water inlet 11, and the jet spout hole is formed. Tap water is vigorously ejected from 3 toward the entrance of the trap section 4, which causes a siphon phenomenon in the trap section 4, and the dirt in the ball section 2 is sucked out to the trap section 4 side and discharged. It is what is done. At this time, the drooping path 58
Since the diaphragm 49 is pressed to the left side in the drawing by the pressure of tap water passing through the inside, the valve body 47 contacts the valve seat portion 45, and the low tank side water supply port 46 is closed by the valve body 47, and the jet When tap water is vigorously ejected from the ejection hole 3, tap water is not supplied into the raw tank 6.

Thereafter, as shown in FIG. 4, when the drain valve 7 comes into contact with the valve seat 6a and is closed, the projecting rod 55 moves downward via the cantilever bar 57, and the upper valve 53 causes the seat portion 54 to move. And the drooping path 58 is closed, and the supply of tap water to the jet ejection port 3 side is stopped. At this time, tap water is supplied from the horizontal water channel 43 through the vertical water channel 44 into the low tank 6 from the low tank side water supply port 46, and the water level W in the low tank 6 is increased by the tap water supplied from the low tank side water supply port 46. And the float 61 rises, the pilot valve 51 comes into contact with the seat portion 52, and the pilot valve 51 is closed. Further, the open / close valve of the ball tap (not shown) is closed by the rise of the float, and the water supply to the water inlet 42 is also stopped.

Thus, in the switching valve 40 of this example, the main body 4
Valves 47, 51 and 53 are compactly arranged in 1 to be linked to the vertical movement of the drain valve 7 and the vertical movement of the float 61, and the opening / closing control is performed by making good use of water pressure through the diaphragm 49. The entire structure can be made compact, and a highly reliable switching valve structure can be obtained.

FIG. 5 shows the operation timing. The user operates the operation lever (not shown) at the point P1 in the figure to open the drain valve 7, and from the point P1 the inside of the low tank 6 is opened. The stored water is drained into the rim water passage 5 and the ball portion 2, tap water is supplied from the low tank side water supply port 46 into the low tank 6, and then the pilot valve 51 is opened as the water level in the low tank 6 decreases. , P2, tap water is supplied from the jet side water supply port 60 to the jet ejection hole 3 side, and at this time, the water supply from the low tank side water supply port 46 into the low tank 6 is stopped. After that, at the point P3, the drain valve 7 is closed, so that the jet side water supply port 60
The water supply from the nozzle to the jet ejection hole 3 is stopped, and at that time, the low tank side water supply port 46 is opened to supply tap water into the low tank 6 and the low tank 6 is filled with water P4.
From the low tank side water supply port 46 to the low tank 6 until
The supply of tap water continues inside. As described above, before the tap water is supplied to the jet ejection hole 3 side, the tap water is supplied from the low tank side water supply port 46 into the low tank 6, so that the water supply time necessary to fill the inside of the low tank 6 is increased. The length can be shortened as compared with the conventional one, the low tank 6 can be downsized, and the water saving effect can be enhanced.

[0014]

INDUSTRIAL APPLICABILITY The present invention is a switching valve for switching the water supply to the jet ejection hole on the toilet body side and the water supply to the low tank, the switching valve including a low tank side water supply port opening in the low tank, The low tank side water supply port is provided with a main body formed with a jet side water supply port that opens to the jet ejection hole side, and a diaphragm that moves by water pressure when the jet side water supply port opens in the main body. The valve body for closing the valve is installed, and in the water channel from the low tank side water supply port side to the jet side water supply port, in conjunction with a float that moves up and down depending on the water level in the low tank, A pilot valve that closes the water channel and opens the water channel by descending the float, and a drain valve that is disposed downstream of the pilot valve and drains the stored water in the low tank Since the upper valve that opens the water channel in the open state and closes the water channel in the closed state is provided, the valve body that opens and closes with the diaphragm, the pilot valve that opens and closes with the float, and the upper valve that opens and closes with the drain valve are inside the main body. It can be made compact and the whole structure can be made compact, and the valve can be controlled to open and close by mechanically interlocking with the float and drain valve instead of electrically opening and closing, making it a highly reliable switching valve. .

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a water supply structure of a toilet bowl.

FIG. 2 is a configuration diagram at the start of operation of a switching valve.

FIG. 3 is a configuration diagram of a state in which water is supplied to a jet ejection hole.

FIG. 4 is a configuration diagram of a state in which the jet side water supply port is closed and tap water is supplied to the low tank again.

FIG. 5 is an operation timing chart of the switching valve.

[Explanation of symbols]

 1 Toilet body 2 Ball part 3 Jet ejection hole 4 Trap part 5 Rim water passage 5a Rim hole 6 Low tank 6a Valve seat 7 Drain valve 9 Water pipe 10 Float 11 Jet water conduit 40 Switching valve 41 Main body 42 Water conduit 43 Vertical water channel 44 Vertical Water passage 45 Valve seat 46 Low tank side water supply port 47 Valve body 48 Guide rod 49 Diaphragm 50 Pressure chamber 51 Pilot valve 53 Upper valve 57 Cantilever bar 58 Droop path 60 Jet side water supply port W Water level

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Motoyoshi Oguri 5-1-1, Koiemotocho, Tokoname City, Aichi Prefecture Inax Co., Ltd.

Claims (1)

[Claims] 1. A switching valve 40 for switching between water supply to the jet ejection hole 3 on the toilet body 1 side and water supply to the low tank 6.
The switching valve 40 includes a main body 41 having a low tank side water supply port 46 that opens into the low tank 6 and a jet side water supply port 60 that opens toward the jet ejection hole 3 side. Inside the valve body 47, which closes the low tank side water supply port 46 through a diaphragm 49 that moves by water pressure when the jet side water supply port 60 opens, is installed from the low tank side water supply port 46 side. A pilot valve 51 that interlocks with a float 61 that moves up and down depending on the water level in the low tank 6 in the water channel leading to the jet side water inlet 60, closes the water channel when the float 61 is in the highest position, and opens the water channel by descending the float 61. And a drain valve 7 disposed downstream of the pilot valve 51 for draining water stored in the low tank 6, and when the drain valve 7 is open, opens a water channel. Switching valve for toilet flushing, characterized in that the upper valve 53 for closing the water channel is provided in the state.