JPH08277567A - Method of supplying water to toilet bowl - Google Patents

Abstract

PURPOSE: To shorten a water supply time, and to miniaturize a low tank by fitting a changeover valve to a city-water feed pipe for a toilet bowl with a jet water nozzle and supplying the low tank with water before the jet nozzle is supplied with water. CONSTITUTION: In a toilet bowl constituted in such a manner that water stored in a low tank 6 is flowed into a rim water path while city water is flowed directly into a jet nozzle 3, flushing water is flowed out from the rim hole 5a of the rim water path 5 when a user operates a lever and a drain valve 7 is opened, and a bowl section 2 is washed while the inside of the low tank 6 is supplied with water from a service pipe 9. A changeover valve 8 is operated and a jet water path 11 is fed with water, and high-pressure water is jetted from the jet nozzle 3 and a trap section 4 is washed. The inside of the low tank 6 is supplied with water before the jet nozzle 3 is fed with water, and the bowl section 2 is washed while being supplied with water. Accordingly, the time when the low tank 6 is filled with water is shortened after usage while the tank 6 is miniaturized, thus improving the effect of economization.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply method for toilet bowls.

[0002]

2. Description of the Related Art Conventionally, after storing water, water stored in a low tank is made to flow into a rim water passage of a toilet body, and tap water is directly made to flow into a jet ejection hole of the toilet body to direct the trap side from the jet ejection hole. There is a toilet bowl configured to eject jet water, but in the past, since tap water was supplied into the raw tank after the water supply to the jet ejection hole was completed, However, there is a problem in that the low tank becomes large because it requires a large amount of water to flow to the toilet body side.

[0003]

The present invention has been devised in view of the above-mentioned problems of the prior art, and can shorten the water supply time into the low tank, downsize the low tank, and save water. With the purpose of not providing a water supply method for a toilet bowl, the first gist thereof is that the stored water in the low tank is made to flow to the rim water passage, and tap water is made to flow directly to the jet ejection hole. The tap water is supplied into the raw tank before the tap water flows into the jet ejection hole. The second gist is that the upstream side of a switching valve having a jet side water supply port opening to the jet ejection hole side and a low tank side water supply port opening to the low tank side is communicatively connected to a water pipe to perform the switching. Before the jet side water supply port is opened, the low tank side water supply port is opened to supply water through a valve. The third gist is to connect the drain valve in the low tank to the switching valve, and when the drain valve is closed from the open state, the jet side water supply port is closed and the low tank side water supply port is opened. Is to supply water.

[0004]

In the first aspect, the tap water is supplied into the raw tank before flowing the tap water into the jet ejection hole, so that the time for supplying water into the raw tank is shortened, and the water is supplied to the raw tank first. Since the tap water is discharged to the toilet body as washing water, a sufficient amount of washing water can be secured even if the low tank is downsized. Further, in the second aspect, through the switching valve,
The tap water can be satisfactorily supplied to the low tank before the tap water flows into the jet ejection hole, and the switching control becomes easy. In the third aspect, the drain valve in the low tank is connected to the switching valve, and when the drain valve is closed to stop the discharge of the water in the low tank to the toilet body, the jet side water supply port Is closed and the low tank side water supply port is opened, water supply to the low tank can be resumed, and the switching valve can be satisfactorily controlled in conjunction with the drain 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 8 is provided in the raw tank 6, and a tap pipe 9 is connected to the switching valve 8 from the outside 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, and tap water supplied from a water pipe 9 is supplied to the jet ejection hole 3 through the jet conduit 11. The tap water is vigorously ejected from the jet ejection hole 3 toward the entrance of the trap 4, so that a siphon phenomenon occurs in the trap 4 and filth in the ball portion 2 is satisfactorily improved. It is constructed so that it can be pulled out and discharged.

Next, a first embodiment of the switching valve 8 provided in the raw tank 6 will be described with reference to FIGS. 2 to 6. First, as shown in FIG. 2, the switching valve 8 has a pipe shape and is omitted. It has a body pipe 15 arranged horizontally, the left end of this body pipe 15 is a water guide port 16 to which the water pipe 9 is connected, and the right end portion on the opposite side of the water guide port 16 is an opening. The first water supply port 17 on the low tank side is provided.

A valve port 20 is formed in the main body pipe 15 on the downstream side of the water guide port 16, and the opening / closing valve 2 is formed in the valve port 20.
1 is arranged to be openable and closable, a projection 36 protruding from the float arm 23 is in contact with the lower surface of the opening / closing valve 21, and the float arm 23 has the float 10 at its right end. The other end is rotatably fulcrum 22
Is connected to the lower part of the main body pipe 15. Therefore, the float 10 moves up and down due to the fluctuation of the water level W of the stored water in the low tank 6, and the float arm 23 moves up and down via the fulcrum 22 so that the opening / closing valve 21 can open and close the valve opening 20. Is configured.

Further, a first communication port 24 is formed in the main body pipe 15 on the downstream side of the valve port 20, and a flap valve 25 that can be opened and closed is provided in the first communication port 24. That is, the flap valve 25 is rotatably supported by a fulcrum 26 below the main body pipe 15, and an inner arm 27 formed in a curved shape from the fulcrum 26 is connected to the flap valve 25. The first communication port 24 can be opened and closed via a flap valve 25 by moving up and down around a fulcrum 26.

An outer arm 28 extending laterally is formed on the right side of the fulcrum 26 in the figure, that is, on the outer side of the main body tube 15 so as to face the inner arm 27.
The ball chain 29 is connected to the connecting portion 37 at the right end of 8,
A drain valve 7 is connected to the lower end of the ball chain 29. The drain valve 7 can open and close a valve seat 6a formed at the bottom of the raw tank 6, and a lever provided on the side surface of the raw tank 6 (not shown) is used. The ball chain 2 is operated by the user.
9 is pulled up, and the drain valve 7 is pulled up accordingly, so that the stored water in the raw tank 6 can be discharged from the valve seat 6a to the toilet body 1 side. When the flap valve 25 is open with respect to the first communication port 24, a low tank side second water supply port 18 is provided so as to hang down from the main body pipe 15 at a portion where the flap valve 25 contacts. When the valve 25 is open with respect to the first communication port 24, the low tank side second water supply port 18 is closed.

Further, a second communication port 30 is formed in the main body pipe 15 on the downstream side of the first communication port 24, and the flap valve 31 is also openable and closable in the second communication port 30.
Is provided, the inner arm 32 is connected to the flap valve 31, and the inner arm 32 swings up and down around the fulcrum 33 to move the flap valve 31 from the position where the second communication port 30 is closed to the first position. As shown in FIG. 2, the two communication ports 30 are opened to be in a horizontal state, and the jet side water supply port 19 formed in the lower surface of the main body pipe 15 can be rotated to a position where the jet side water supply port 19 is closed. An outer arm 34 extending horizontally is formed outside the fulcrum 33, and an engaging rod 38 is provided at the tip of the outer arm 34. The engaging rod 38 extends from the float arm 23. It is engaged in the engagement ring 35 extending upward. That is, the engagement ring 35 is formed in an annular shape that forms a space of a substantially inverted triangular shape, and the engagement rod 38 is engaged in the engagement ring 35.

In the state of FIG. 2, the water level W of the stored water in the low tank 6 is full, and in this state, when the user operates an operation lever (not shown) after the toilet, the ball chain 29 is pulled up and the drain valve 7 is discharged. As a result, the cleaning water in the low tank 6 flows down to the ball portion 2 through the rim water passage 5. When the ball chain 29 is raised, the flap valve 25 closes the low tank side second water supply port 18 and opens the first communication port 24. Similarly, the flap valve 31 closes the jet side water supply port 19. Closed second communication port 3
0 is maintained in the open state, and from this state the low tank 6
When the stored water in the inside is discharged from the valve seat 6a, the water level W is lowered and the float 10 is also lowered, whereby the opening / closing valve 21 opens the valve port 20, and tap water is introduced from the water introducing port 16 into the main pipe. The tap water that has flowed into the inside 15 is supplied to the low tank 6 from the open low tank side first water supply port 17, and the tap water is supplied from the low tank side first water supply port 17 into the low tank 6. Inflow.

Next, when the water level W in the low tank 6 is lowered to the state shown in FIG. 3 by the drainage to the toilet body 1, the engaging ring 35 moves the outer arm 34 through the engaging rod 38 by the descending of the float 10. Since the flap valve 31 is rotated downward, the flap valve 31 is moved through the inner arm 32.
And the second communication port 30 is closed. Therefore, when the second communication port 30 is closed by the flap valve 31, the jet side water supply port 19 is opened, and in this state, tap water is flown from the jet side water supply port 19 to the jet water conduit 11. Jet headrace 1
1, tap water is vigorously ejected from the jet ejection hole 3 toward the entrance of the trap portion 4, and as a result, a siphon phenomenon occurs and dirt in the ball portion 2 is sucked into the trap portion 4 and discharged. To be done. Therefore, FIG.
Since the second communication port 30 is closed while tap water is being supplied from the jet side water supply port 19 to the jet ejection hole 3 as shown in FIG. Water supply is also stopped.

While tap water is being jetted from the jet spout hole 3, the stored water in the low tank 6 continues to flow down to the toilet body 1 side, so that the water level W in the low tank 6 further decreases, and in the state of FIG. When the drain valve 7 comes into contact with the valve seat 6a and the valve seat 6a is closed, drainage to the toilet body 1 side is stopped, and at this time, the drain valve 7 is lowered to lower the outer arm 28 via the ball chain 29. When the flap valve 25 contacts the first communication port 24, the flap valve 25 closes the first communication port 24.
The water supply port 18 is opened, and in the state of FIG. 4, tap water is supplied from the low tank-side second water supply port 18 into the low tank 6.

In this way, the second water supply port 1 on the low tank side
When tap water is supplied to the low tank 6 from 8, the water level W in the low tank 6 gradually rises, the float 10 rises as shown in FIG. 5, and the on-off valve 21 closes the valve opening 20 to close the low tank. Water supply to the inside of 6 is stopped. In addition,
As the float 10 rises, the outer arm 34 pivots upward via the engagement rod 38 engaged with the engagement ring 35, whereby the flap valve 31 opens the second communication port 30 and the jet side water supply port 19 The jet water supply port 19 is closed by abutting against the side. From the state shown in FIG. 5, when the user operates an operation lever (not shown) provided on the side surface of the low tank 6, the state shown in FIG. 2 is obtained again, and the drain valve 7 is opened to open the low tank side first water supply port 17 From low tank 6
The tap water is supplied to the inside.

The operation timing of such a switching valve 8 is shown in FIG. The point indicated by P1 in the figure is when the operation lever is operated to raise the drain valve 7 as shown in FIG. 2, and at this time, the stored water in the low tank 6 is discharged to the rim water passage 5 and the ball portion 2 is discharged. The wash water flows down, and tap water is supplied into the low tank 6 from the low tank-side first water supply port 17. At the point P2 in the figure, the state shown in FIG. 3 is reached, and the jet side water supply port 19 is opened and tap water is ejected from the jet ejection hole 3. At this time, the low tank side first water supply port 17 is closed and the supply of tap water into the low tank 6 is stopped. In P3 in the figure, the state is that of FIG. 4, and the drainage of the washing water to the rim water passage 5 and the ball portion 2 is stopped.
The supply of tap water to the low tank is stopped, the second water supply port 18 on the low tank side is opened, and the tap water is supplied to the low tank 6. The supply of tap water to the low tank is P4, that is, as shown in FIG. The valve opening 20 is closed by the on-off valve 21 when the low tank is filled with water.

As described above, in the structure of this embodiment, the flap valve 25 is opened and closed in conjunction with the drain valve 7, and the float 10
Since the flap valve 31 is opened / closed in conjunction with the vertical movement of the tap water, the tap water supply control to the inside of the raw tank 6 and the jet ejection hole 3 side is favorably performed in conjunction with the drain valve 7 and the float 10. Therefore, a switching valve structure with few failures can be formed, and the entire structure can be formed at low cost. Further, in this example, before the tap side water supply port 19 is opened and tap water is supplied to the jet ejection hole 3 side, tap water is supplied from the low tank side first water supply port 17 into the raw tank 6, and the drain valve When 7 is opened, tap water is first supplied from the low tank side first water supply port 17 into the low tank 6, so that the water supply time for filling the low tank 6 with water can be shortened as compared with the conventional case. The low tank 6 can be downsized, and the water saving effect can be improved.

Next, a second embodiment of the switching valve will be described with reference to FIGS. The switching valve 40 of FIG. 7 is provided in the low tank 6 instead of the switching valve 8,
An opening / closing valve of a ball tap (not shown) is present on the upstream side of the water guiding port 42 on the upstream side of the main body 41 constituting the switching valve 40, and tap water introduced into the water guiding port 42 is formed in the horizontal direction. Along with the horizontal water channel 43, the horizontal water channel 43 is branched and introduced into the vertical water channel 44 formed in the main body 41 in a drooping manner.
Is formed, and the lower end of the vertical water channel 44 is at the low tank 6
It is a low tank side water supply port 46 opened inside.
A valve element 47 is abutted on the valve seat portion 45 so as to be opened and closed laterally. The valve element 47 is connected to a diaphragm 49 via a guide rod 48, and the diaphragm 49 is placed in a pressure chamber 50. It is arranged.

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.

In the state shown in FIG. 7, the user operates the operation lever provided on the side wall surface of the low tank 6 (not shown) to pull up the ball chain 29. 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. 7, the low tank 6 is full of water and the float 61 is raised, 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.

When the water level W in the low tank 6 is lowered by drainage in this state, as shown in FIG. 8, the pilot valve 51 is moved downward as the float 61 is lowered, and the seat portion 52 is opened. In this state, as shown in FIG. 8, 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 conduit 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. 9, 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. 10 shows the operation timing. At the point P1 in the figure, the user operates the operation lever (not shown) to open the drain valve 7, and the P1
From this point, the water stored in the low tank 6 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 water level in the low tank 6 is lowered. Accordingly, the pilot valve 51 is opened, and tap water is supplied from the jet side water supply port 60 to the jet ejection port 3 side at the point P2. At this time, the tap water is supplied from the low tank side water supply port 46 into the low tank 6. The water supply of the jet side water supply port 60 is stopped by closing the drain valve 7 at the point P3 after that.
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, in this example as well, before the tap water is supplied to the jet ejection hole 3 side, tap water is supplied from the low tank side water supply port 46 into the low tank 6, so that it is necessary to fill the inside of the low tank 6 with water. The water supply time can be shortened as compared with the conventional one, the low tank 6 can be downsized, and the water saving effect can be enhanced.

Next, FIGS. 11 to 17 show a third embodiment of the switching valve. FIG. 11 is a plan layout configuration diagram of the switching valve. An opening / closing valve 70 is connected to the external water pipe 9, and the opening / closing valve 70 is opened / closed via a float arm 72 which is rocked by vertical movement of a float (not shown). A water shutoff valve 71 is provided, a vacuum breaker 73 is provided on the downstream side of the water shutoff valve 71 of the on-off valve 70, and a switching valve 74 is provided on the downstream side of the vacuum breaker 73.
The switching valve 74 includes a tubular switching valve main body 75 and a tubular valve body 76 rotatably mounted therein. A jet side water supply port 77 formed in the switching valve main body 75.
The low tank side water supply port 78 is configured to be appropriately opened and closed by the rotation of the valve body 76, and a shaft 79 is provided at the end of the valve body 76, and a front view from the shaft 79 side is shown in FIG.
The left arm 83 and the right arm 84 are provided on the shaft 79 so as to project outward in opposite directions. The tip of the right arm 84 is a drainage for opening and closing the valve seat 6a at the bottom of the raw tank 6. It is connected to the upper end of a ball chain 29 connected to the valve 7, a hook portion 85 is extendedly formed at the tip of the left arm 83, and a fan-shaped balancer 86 is provided outside the shaft 79. Has been.

The hook 85 is constructed so that it can be engaged with and disengaged from the hanging metal fitting 82 of the weight 81. As shown in FIG. 17, the weight metal fitting 81 has a U-shaped hanging metal fitting 82 provided on the upper portion thereof. The guide cylinder 80 is vertically movably housed in the guide cylinder 80, and the guide cylinder 80 is vertically installed in the raw tank 6.

The state shown in FIG. 12 is a state before cleaning, and the water stored in the low tank 6 is at the water level W in a full state. When the user operates an operation lever (not shown) provided on the side surface of the low tank 6 from this state, the ball chain 29 is pulled up, the drain valve 7 is pulled up, the valve seat 6a is opened, and the water stored in the low tank 6 is stored. The water is drained to the rim water passage 5 and flows down into the ball portion 2 through the rim hole 5a. When cleaning the ball portion 2, the state shown in FIG. 13 is obtained.
When the water level W in the low tank 6 drops from the state of 3 due to drainage, the float arm 72 lowers and the water stop valve 71 is opened, tap water is introduced into the switching valve 74 through the vacuum breaker 73, and in this state, the low tank Side water supply port 7
Since 8 is open, tap water is supplied from the low tank side water supply port 78 into the low tank 6 through the outflow pipe 87.

In this state, the water level W in the low tank 6 is further increased.
Is lowered, the weight 81 is lowered together with the water level W, and the hanging metal fitting 82 moves the hook portion 85 downward,
As a result, the valve body 76 rotates about the shaft 79, and FIG.
In this state, the low tank side water supply port 78 is closed and the jet side water supply port 77 is opened on the contrary,
In the state shown in FIG. 14, tap water is introduced from the jet side water supply port 77 into the jet water conduit 11, and tap water is vigorously ejected from the jet ejection holes 3 toward the inlet of the trap section 4, whereby the tap water enters the trap section 4. Siphon phenomenon occurs,
The dirt in the ball portion 2 is sucked into the trap portion 4 and discharged.

When the water level W in the low tank 6 lowers from this state due to drainage to the ball portion 2 side, the weight 8
1 further descends downwards, and the hooks 85 extend from the hooks 8
2 drops off, but the holding power of the balancer 86 keeps the jet side water supply port 77 open, and when the water level W further drops and the drain valve 7 is lowered and closed, as shown in FIG. The valve body 76 is rotated clockwise in the drawing to the original position around the shaft 79. At this time, the jet side water supply port 77 is closed and the low tank side water supply port 78 is opened. The supply of tap water to the low tank 6 is stopped from the low tank side water supply port 78 at the same time.
Tap water is supplied inside.

By supplying tap water into the low tank 6 from the low tank side water supply port 78, the water level W in the low tank 6 gradually rises, and when the water level W becomes full, the float arm 72 rises to stop the water. The valve 71 is closed and the water supply to the low tank 6 is stopped. At this time, as shown in FIG. 16, the weight 81 also rises as the water level W rises, the hanging fitting 82 presses the hook portion 85 upward, and the hook portion 85 becomes ready to engage with the hanging fitting 82 again.

As described above, in the switching valve 74 of this embodiment, the valve body 76 is rotatably provided in the switching valve main body 75, and the jet side water supply port 77 and the low tank side water supply port 78 are switched by a rotary system. It becomes possible to form the whole compactly and install it compactly in the low tank 6, and it is possible to perform the switching control of tap water in good cooperation with the float of the open / close valve 70 and the drain valve 7 of the low tank 6, It is possible to provide a reliable switching valve that operates with few failures.

Incidentally, also in this example, the jet ejection holes 3
Before the tap water is supplied to the side, tap water is supplied into the raw tank 6 through the raw tank side water supply port 78, and tap water is supplied to the raw tank 6 at an initial stage when the drain valve 7 is opened. Therefore, the water supply time for filling the low tank 6 with water can be shortened as compared with the conventional one, and even if the low tank 6 is small, it is possible to secure a sufficient amount of cleaning water to the ball portion 2 side. The low tank 6 can be downsized, and the water saving effect can be improved.

[0033]

Industrial Applicability The present invention relates to a toilet bowl constructed so that the stored water in the low tank is made to flow to the rim water passage and the tap water is directly made to flow to the jet outlet before the tap water is made to flow to the jet outlet. In addition, since tap water is supplied to the low tank, tap water is supplied to the low tank in the initial stage when the stored water in the low tank is drained.
It is possible to shorten the water supply time to fill the low tank with water than before, and to supply a sufficient amount of washing water to the rim water passage side by supplying tap water to the initial low tank. The size can be reduced and the water saving effect can be improved.

Further, the upstream side of a switching valve provided with a jet side water supply port opening to the jet ejection hole side and a low tank side water supply port opening to the low tank side is communicatively connected to a water pipe through the switching valve. Since the low tank side water supply port is opened to supply water before the jet side water supply port is opened, the switching control valve is used to reliably and properly control the switching so that the tap water is fed into the low tank before the tap water is supplied to the jet ejection hole. It is possible to supply water well.

Further, a drain valve in a low tank is connected to the switching valve, and when the drain valve is closed from an open state, the jet side water supply port is closed and the low tank side water supply port is opened to supply water. Therefore, by interlocking the switching valve with the drain valve, when the drain valve is closed, the water supply to the jet ejection hole side is stopped via the switching valve, and at the same time the tap water supply to the low tank is restarted well. It becomes possible.

[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 the switching valve of the first embodiment.

FIG. 3 is a configuration diagram of a state in which water is supplied from a jet side water supply port 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 water is again supplied into the raw tank.

FIG. 5 is a configuration diagram of a water supply end state.

FIG. 6 is an operation timing chart of the switching valve of the first embodiment.

FIG. 7 is a configuration diagram at the start of operation of a switching valve according to a second embodiment.

FIG. 8 is a configuration diagram of a state in which water is supplied to the jet ejection holes.

FIG. 9 is a configuration diagram of a state where the jet side water supply port is closed and tap water is supplied to the low tank again.

FIG. 10 is an operation timing chart of the switching valve of the second embodiment.

FIG. 11 is a plan configuration diagram of a switching valve according to a third embodiment.

12 is a front view of the switching valve of FIG. 11. FIG.

FIG. 13 is a front view of the switching valve at the start of operation.

FIG. 14 is a configuration diagram of a state in which water supply to the low tank side is switched to water supply to the jet ejection holes.

FIG. 15 is a configuration diagram in which water supply to the jet ejection hole side is switched to water supply to the low tank again.

FIG. 16 is a configuration diagram of a stopped state of water supply.

FIG. 17 is a perspective configuration diagram of a weight.

[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 8 Switching valve 9 Water pipe 10 Float 11 Jet water conduit 15 Main pipe 16 Water intake port 17 Low tank side No. 1 1 Water Supply Port 18 Low Tank Side Second Water Supply Port 19 Jet Side Water Supply Port 20 Valve Port 21 On-off Valve 23 Float Arm 24 First Communication Port 25 Flap Valve 27,32 Inner Arm 28,34 Outer Arm 29 Ball Chain 30 Second Communication Port 31 Flap valve 35 Engagement ring 40 Switching valve 41 Main body 42 Water inlet 43 Horizontal channel 44 Vertical channel 45 Valve seat 46 Low tank side water inlet 47 Valve body 48 Guide rod 49 Diaphragm 50 Pressure chamber 51 Pilot valve 53 Upper valve 57 Cantilever 57 Bar 58 Drooping path 60 Jet side water supply port 70 Open / close valve 71 Water stop valve 73 -Menu arm breaker 74 switching valve 75 switching valve body 76 valve body 77 jet-side water supply port 78 low tank-side water supply port 79 axis 80 the guide tube 81 weight 82 hanging bracket 83 left arm 84 right arm 85 hooked portion 86 balancer W level

Claims (3)

[Claims] 1. A toilet bowl configured so that water stored in a low tank flows into a rim water passage and tap water directly flows into a jet ejection hole, wherein the low tank is supplied before the tap water flows into the jet ejection hole. A method of supplying water to a toilet, which is characterized by supplying tap water to the inside. 2. An upstream side of a switching valve having a jet side water supply port opening to the jet ejection hole side and a low tank side water supply port opening to the low tank side is connected in communication with a water pipe, and via the switching valve. The water supply method for a toilet according to claim 1, wherein the low tank side water supply port is opened to supply water before the jet side water supply port is opened. 3. A drain valve in a low tank is connected to the switching valve, and when the drain valve is closed from an open state, the jet side water inlet is closed and the low tank side water inlet is opened to supply water. The water supply method for a toilet according to claim 2, wherein