JPH10121540A - Tank type water supply device for toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economize water, by supplying reclaimed water like rainwater from a water storage tank installed at an elevated place into a tank whose water level has become low after use of a toilet, prior to tap water. SOLUTION: A tank type water supply device is constituted of the first water tank 1 provided with the first water supply device 20 and the second water tank provided with the second water supply device 50 at the lower side thereof. When a toilet 7 is flushed, after water in the tank 2 has been discharged to the toilet 7, the valve 90 is shutt and the device 50 is actuated and tap water is discharged from a washhand faucet 89a and retained in the tank 2. Tap water reaches the device 20 through the pipe 12 and the reclaimed water in the tank 1 flows down into the tank 2 through the pipe 11 by the actuation of the device 20. When the water level in the tank 2 rises, the device 50 is actuated to stop the tap water from the faucet 89a. And also the reclaimed water in the tank 1 is stopped not to flow in the tank 2. When water is not yet accumulated in the tank 1, tap water flows into the tank 2 by cooperation of the devices 20, 50. In this way, tap water can be economized and safety can be secured because electricity is not used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank-type toilet water supply device for supplying water, such as rainwater, which is not normally used and discharged to a tank of a tank-type toilet, in preference to tap water.

[0002]

2. Description of the Related Art In a conventional tank type toilet, water is flushed,
When the water level in the tank (second tank) was lowered, tap water was always supplied to the tank (second tank).

[0003]

Although tap water is indispensable for domestic use, it is uneconomical to always use clean tap water to flush toilet waste.

In addition to tap water, there are rainwater and relatively clean used water described below around us. These waters
Although not as clean as tap water, it is at a level sufficient to flush toilet waste. Conventionally, these waters (hereinafter referred to as sewage) are discharged to sewage with little use,
There was no effective means of use.

[0005]

According to the present invention, a first tank for storing rainwater or the like is piped to a second tank of a tank-type toilet located at a lower position than the first tank, and water is flushed after using the toilet. This is a tank-type toilet water supply device that supplies water in a first tank to a second tank to a predetermined water level prior to tap water when the water level in the tank drops.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 shows a tank-type toilet water supply device 100.
FIG. Tank type toilet water supply device 10
0 is the first plastic, stainless steel or earthenware
It comprises a tank 1, a second tank 2, a first water supply device 20 provided in the first tank 1, a second water supply device 50 provided in the second tank 2, and the like. The first water supply device 20 and the second water supply device 50 are formed of plastic, stainless steel, resin, or the like.

The first tank 1 is disposed above the second tank 2, and the first tank 1 and the second tank 2 are fixed to a wall or a ceiling by a support mechanism such as a bolt (not shown). The first tank 1 has a capacity, for example, ten times larger than the second tank 2.
Hereinafter, the structures of the first tank 1 and the second tank 2 will be described in order.

A first water supply device 20, which will be described in detail later, is fixed to the inner bottom surface of the first tank 1. 1st tank 1
, One end of the pipe 3 penetrates. A water reservoir having a larger volume than the first tank 1 is provided at the other end (not shown) of the pipe 3. The medium water is collected in the water storage container, and the medium water 98 is supplied to the first tank 1 via the pipe 3.

As shown in FIG. 2, upper ends 11a and 12a of pipes 11 and 12 are connected to the first water supply device 20 from below through holes 1a and 1b provided at the bottom of the first tank 1. As shown in FIG. 1, the lower end 11b of the pipe 11 is
It penetrates the lid 2 a of the tank 2 and communicates with the inside of the second tank 2. The lower end 12b of the pipe 12 penetrates the lid 2a and communicates with a second water supply device 50 described later in detail.

As shown in FIG. 2, the first water supply device 20 has an upper block 20a and a lower block 20b integrally fixed by bolts (not shown).
Watertightness is maintained between the a and the lower block 20b by an O-ring (not shown). The first water supply device 20 includes the first tank 1
Is fixed to the bottom of the base with bolts (not shown).

The lower block 20b is provided with a through-hole (not shown) extending at right angles to the plane of FIG. 2, and a shaft 21 penetrates the through-hole in a watertight manner and is supported by the through-hole. The shaft 21 of the portion protruding outside the lower block 20b
Is fixed to a long arm 22a having a buoyant body 22 made of a hollow resin fixed at the end. The buoyant body 22 may be formed of polystyrene foam.

A bracket 41 is fixed to the upper block 20a, and a bolt 42 is screwed into a screw hole (not shown) provided in the bracket 41. When water is supplied into the first tank 1 and the buoyant body 22 rises, the long arm 22a
As shown in FIG. 2, the rotation of the shaft is restricted by contacting the bolt 42.

As shown in FIG. 2, a space 25 for accommodating the short arm 23 is formed between the lower block 20b and the upper block 20a. The short arm 23 is fixed to the shaft 21 and is rotatable integrally with the shaft 21 within a predetermined range in the space 25. The short arm 23 has a valve 2
3a is provided.

The upper block 20a is provided with a passage 24 for communicating a space 25 with a large-diameter cylinder portion 26 described later. The portion of the passage 24 connected to the space 25 includes the valve seat 2
4a are formed. A passage 32 is provided in the lower block 20b, and a hole 1b is provided in the first tank 1. The passage 32 and the hole 1b connect the space 25 and the pipe 12.

As shown in FIG. 2, the upper block 20a has a cylinder large diameter portion 26 and a cylinder large diameter portion 26.
A small cylinder portion 26a is provided which communicates with the cylinder, and a piston 27 is provided in each of the large cylinder portion 26 and the small cylinder portion 26a in a watertight and slidable manner.

A valve 28 is fixed to the lower end 27a of the piston 27, and a coil spring 40 is contracted between the lower surface of the upper block 20a and the valve 28, and the valve 28 is provided in the lower block 20b. Valve seat 33 formed at the top of passage 33
a to close the valve seat 33a.

The passage 33 communicates with the pipe 11 through a hole 1a provided in the first tank 1. The passage 33 branches into the branch path 33b in the lower block 20b.
3b is connected to the pipe 31, and the pipe 31 extends upward in the first tank 1 (FIG. 1). The passage 33 is concentric with the large-diameter cylinder portion 26 and the small-diameter cylinder portion 26a. When the excess water is supplied to the first tank 1, the piping 31 transmits the waste water from the piping 31 to the passage 33, the hole 1 a and the piping 1.
1 is provided for discharging from the first tank 1 to the second tank 2 via the first tank 1.

As shown in FIG. 2, a hole 3 formed by the lower surface of the upper block 20a and the lower block 20b and opened to the left.
5 communicates with the cylinder small diameter portion 26a. The hole 35 and the passage 33 are closed by the valve 28.

As shown in FIG. 2, a hole 34 communicating with the cylinder large diameter portion 26 is provided in a horizontal direction above the hole 35 of the upper block 20a. The hole 34 has a large-diameter portion and a small-diameter portion. The large-diameter portion is internally threaded (not shown).
The needle valve 37 is screwed into the female screw of the hole 34,
4 can be moved. In addition, the needle valve 37
Can open and close a valve seat 34a formed at the step of the connection portion between the large diameter portion and the small diameter portion of the hole 34. As shown in FIG. 2, the position of the needle valve 37 is fixed by a lock nut 38. The hole 34 and the hole 35 communicate with each other through a passage 36, and the needle valve 37 communicates when the valve seat 34a is opened.

Next, the structure of the second tank 2 will be described. FIG.
As shown in FIG.
2, a lower end 11b of the pipe 11 is disposed so as to open into the second tank 2, and a pipe 12 is provided.
Is connected to a second water supply device 50 described later. Here, the pipes 11 and 12 may be connected to the inside of the second tank 2 through the side surface of the second tank 2 at a position facing the hole through which the water pipe 4 shown in FIG.

The second water supply device 50 is fixed to the second tank 2 with a bracket (not shown) or the like, and the water pipe 4 passes through the side wall of the second tank 2 and is connected to the second water supply device 50. .

As shown in FIG. 5, the second water supply device 50
It comprises a first block 51 and a second block 52. The first block 51 communicates with the water pipe 4 and extends horizontally. The first block 51 communicates with the passage 53 and extends vertically.
55, a passage 56 connected to the lower end 12b of the pipe 12, and penetrating above the first block 51;
In the block 51 and the second block 52, a passage 57 is provided concentrically in the vertical direction. The passage 53 and the passage 57 are not on the same plane as viewed in FIG. 5, and they are not in communication.

Above the hole 55 and the passage 56, a lid 58 is fixed to the first block 51 with a bolt (not shown).
The lid 58 is provided with a hole 58a through which the upper piston 54 penetrates, a hole 58b is provided concentrically with the passage 57, and a throttle valve 59 is screwed into the hole 58b. The opening and closing of the passage 57 can be adjusted.

A space 6 is provided between the lid 58 and the first block 51.
0 is formed, the space 60 is always in communication with the hole 55 and the passage 56, and the space 60 is in communication with the passage 57 only when the throttle valve 59 is open.

A nut 54a is provided above the upper piston 54.
Are screwed, and a coil spring 61 is contracted between the nut 54a and the lid 58. The watertightness is maintained between the upper piston 54, the lid 58, and the hole 55 by O-rings.

A female screw (not shown) is provided at a lower portion of the upper piston 54, and a lower piston 62 having a screw portion (not shown) at an upper portion thereof is screwed and integrated with the upper piston 54.

A watertight rubber 62 is provided below the lower piston 62.
A valve 62b provided with a is provided, and the valve 62b is in contact with a valve seat 64 provided below the first block 51 from below, and closes the valve seat 64. The second block 52 is provided with a chamber 72 in which the valve 62b of the lower piston 62 can move. The chamber 72 communicates with the inside of the second tank 2 via a passage 73.

The upper piston 54 and the lower piston 62
The valve seat 64 is conically closed downward so that the upper piston 54 has a larger pressure receiving area on which the pressure of the tap water supplied from the passage 53 acts.

As shown in FIG. 5, a cylinder chamber 71 is provided in the second block 52, and the cylinder chamber 71 and the passage 5
Reference numeral 3 communicates with a hole 63 provided in the first block 51.
A valve seat 63a is formed below the hole 63.

O-ring 7 that presses against valve seat 63a to stop water
A piston 70 having an upper portion 0a is slidable vertically in the cylinder chamber 71. The piston 70 has a flange portion 70b that slides in the cylinder chamber 71. The flange 70b has a plurality of holes 70c.

The piston 70 penetrates a hole 52a provided in the lower part of the second block 52 while keeping watertight. The second block 52 has a groove 70 which is open on the right and lower sides as viewed in FIG.
d is provided.

One end of the first arm 81 is rotatably supported in the groove 70d. The other end of the first arm 81 is pivotally connected to one end of the second arm 82 so as to be rotatable with each other. A buoyancy body 80 made of a hollow resin is fixed to the other end of the second arm 82. The buoyant body 82 may be formed of styrene foam instead of resin.

The second arm 82 is pivotally connected to the lower end of the piston 70. When the water level in the second tank 2 rises and falls, the buoyancy body 80 moves up and down, and the first arm 81 and the second arm 82 are connected to each other so that the piston 70 can move smoothly inside the cylinder chamber 71 vertically. Perform the operation.

The second block 52 is provided with a hole 85a for allowing the spool 85 to penetrate in a direction perpendicular to the plane of FIG. The hole 85 a communicates with the cylinder chamber 71, and a hole 86 (FIGS. 8 and 9) is provided on a side surface of the spool 85 in the cylinder chamber 71.
b.

As shown in FIG. 8, the spool 85 is supported by the flange 85c and the screw 94 so as to be able to rotate and stop with respect to the second block 52. The hole 86 of the spool 85 and the hole 7 of the cylinder chamber 71 shown by the mesh portion in FIG.
The cylinder chamber 71 communicates with the cavity 85b at the portion where 1a overlaps.

When the spool 85 is rotated counterclockwise as viewed in FIG. 5, the mesh portions gradually become smaller in the order indicated by the arrows in FIG. 9, that is, the water passage connecting the inside of the cylinder 71 and the inside of the spool 85 becomes narrower. Conversely, when it is rotated, it can be opened to the left end state in FIG.

A plurality of holes 88 (FIG. 8) for communicating the cavity 85b with the second tank 2 are provided at a plurality of positions on the circumferential surface of the spool 85.
Is closed. The spool 85 is connected to one end of a pipe 89, and the other end of the pipe 89 is an outlet for hand washing water as shown in FIG. Further, as shown in FIG. 8, the cavity 85b communicates with the passage 57 provided in the first block 51 and the second block 52.

Tap water is supplied from the water pipe 4 in FIG. 1 to the passage 53 (FIG. 5) of the second water supply device 50, and is passed through the hole 63 (FIG. 8) via the hole 63 and the cylinder chamber 71 to form a cavity 85b of the spool 85. When flowing into the inside, the elastic tube 87 is moved so that part of the tap water passes through the passage 57 (FIGS. 5 and 8) at a constant pressure.
Is elastically deformed.

If the water pressure in the cavity 85b is too high, the tap water presses the elastic tube 87 and flows out of the hole 88 into the second tank 2, keeping the water pressure in the cavity 85b within a certain range. After passing through the passage 57, the remainder flows out of the faucet 89a in FIG.

Here, the inside diameter of the pipe 89 is smaller than the inside diameter of the cavity 85b, and the tap water maintains a predetermined water pressure in the cavity 85b. Water is supplied.

When the pressure of the tap water supplied from the water pipe 4 in FIG. 1 is low, the screw 94 in FIG.
Is rotated to increase the area of communication between the hole 86 and the hole 71a in FIG.

As shown in FIG. 1, the second tank 2
A stopper 90 is provided to prevent water in the tank 2 from flowing to the toilet 7. The stopper 90 rotates about a shaft 92 so as to open when the cock 91 is twisted counterclockwise as shown by the arrow in FIG.

A pipe 93 is connected to the pipe 6 shown in FIG. The pipe 93 is provided to discharge the middle water or tap water from the second tank 2 to the toilet 7 via the pipe 6 when the middle water or the tap water is excessively supplied to the second tank 2.

Next, the operation of the tank-type toilet water supply device 100 will be described. As shown in FIG. 6, before using the toilet, middle water or tap water is normally stored in the second tank 2 up to the position of the water level 2 on the water level scale 200, and the buoyant body 80 is used.
Has risen, and the piston 70 has closed the valve seat 63a.

The first tank 1 is also filled with middle water, and as shown in FIG. 2, the buoyant body 22 is lifted up, comes into contact with the bolt 42 and stops, and the valve 23a is connected to the valve seat 24a.
Away from

Now, when the cock 91 in FIG. 1 is twisted and water flows into the toilet 7, the water level in the second tank 2 drops, and the water level scale 200 drops from 2 to 1 to change from the state in FIG. In this state, the buoyant body 80 also descends as the water level decreases, and the piston 70 descends. After the water in the second tank 2 quickly flows to the toilet 7, the stopper 90 is closed.

When the piston 70 descends, the passage 5 in FIG.
The tap water in 3 passes through the hole 63 and the hole 70c provided in the flange portion 70b of the piston 70, and from the cylinder chamber 71 to the pipe 8 through the hole 71a (FIG. 9), the hole 86, and the cavity 85b.
9 (FIGS. 1 and 8), and hand washing water (tap water) flows from the faucet 89a. The hand-washed water passes through the hole 2c (FIG. 1) and is stored in the second tank 2.

Tap water is supplied to the hollow 85b of the spool 85.
Through the passage 57 (FIGS. 5 and 8) to reach the space 60 (FIG. 5). The water that has reached the space 60 further passes through the passage 56.
And the first water supply device 2 in the first tank 1 via the pipe 12
0 reaches the passage 32 (FIGS. 1 and 2) and the space 25 (FIG. 2).

As shown in FIG. 2, since the valve 23a is now open, the water passes through the passage 24 and reaches the large-diameter cylinder portion 26 below the piston 27. The needle valve 37 has only a very small gap between the needle valve 37 and the valve seat 34a (FIG. 2). Most of the water that has reached the cylinder large-diameter portion 26 loses its place to go, and the inside of the cylinder large-diameter portion 26 The pressure rises. When the pressure becomes larger than the sum of the elastic force of the coil spring 40 and the weight of the piston 27, the piston 27 rises as shown in FIG. 4, the valve 28 moves away from the valve seat 33a, and the water in the first tank 1 35 through the passage 33 and the pipe 11
It flows out into the tank 2 (FIG. 1).

When the medium water flows in from the first tank 1 and the water level in the second tank 2 rises to the position of the water level 2 on the water level scale 200, the buoyant body 80 (FIG. 5) of the second water supply device 50 is moved to FIG.
Then, the valve seat 63a is closed by the O-ring 70a of the piston 70 as shown in FIG.

When the valve seat 63a is closed, the faucet 8 shown in FIG.
Tap water stops flowing out of the cylinder large-diameter portion 26 shown in FIG. 2 and tap water is no longer supplied to the cylinder large-diameter portion 26 shown in FIG. Between the valve seat 34a and the first tank 1 through the passage 36 and the hole 35, and the water pressure in the large-diameter portion of the cylinder decreases.
3a, the middle water in the first tank 1 stops flowing to the second tank 2.

In the above series of operations, the second tank 2
In order to supply an appropriate amount of intermediate water, the opening of the spool 85 by the needle valve 37 shown in FIG. 2, the throttle valve 59 shown in FIG. 5, and the screw 94 shown in FIG. The area of the overlapping portion of the hole 86) is adjusted.

Here, the opening degree of the spool 85 with respect to the cylinder 71 chamber is set according to the magnitude of the water pressure of the tap water.
After setting, it is preferable to fix it. Usually, adjustment of the amount of water supplied from the first tank 1 to the second tank 2 is performed by adjusting the throttle valve 59 in FIG. 5 or the needle valve 37 in FIG.

When the medium water is not stored in the first tank 1, the buoyancy member 22 of the first water supply device 20 is used as shown in FIG.
Is lowered, the valve 23a is in contact with the valve seat 24a, and the water that has reached the space 25 cannot pass through the passage 24.

Accordingly, the water pressure in the space 25 rises, and the pressure is transmitted to the passage 56 and the space 60 in FIG. When tap water is further supplied from the passage 57 (FIG. 5), as shown in FIG.
The upper piston 54 and the lower piston 62
Is pushed down, and the valve 62b of the lower piston 62 is
4, the passage 53 and the chamber 72 communicate with each other, and tap water is supplied to the chamber 7.
2 and flows into the second tank 2 through the passage 73. At this time, tap water for hand washing also flows out of the faucet 89a shown in FIG.

When the water level in the second tank 2 rises to the position of the water level 2 on the water level scale 200 as shown in FIG. 6, the buoyant body 80 of the second water supply device 50 rises, and the O-ring 70a of the piston 70 The tap water is pressed by the seat 63a, and the tap water is not supplied to the cylinder chamber 71.

The water in the space 60 is supplied to the throttle valve 59 and the passage 5
7. Piping 89, faucet 89a via cavity 85b (FIG. 8)
(FIG. 1), the water is drained into the second tank 2, the water pressure gradually decreases, and the upper piston 54 and the lower piston 62
Rises and the valve 62 abuts against the valve seat 64, and tap water is supplied to the chamber 72.
And flow to the passage 73 is stopped.

As described above, if there is accumulated water in the first tank 1, the accumulated water is preferentially supplied to the second tank 2. If there is no accumulated water, tap water is supplied to the second tank 2. Supplied inside. In any case, tap water is supplied to the water for hand washing.

In the above-described embodiment of the present invention, the case where water for hand washing is supplied has been described. However, a water supply device having a function of only supplying middle water from the first tank 1 to the second tank 2 is provided. It is also possible to provide.

In this case, the shaft 850 shown in FIG. 10 is inserted into the hole 85a instead of the spool 85 shown in FIG. A space 852 is formed between the shaft 850 and the hole 85a. The space 852 is the cylinder chamber 71 shown in FIG.
And the passage 57.

Further, as shown in FIG.
Is provided with a throttle valve 851, and a screw hole into which the throttle valve 851 is screwed and the space 852 communicate with each other through a passage 853. Notch 8 is formed in screw portion 851a (FIG. 11) of throttle valve 851.
51b is provided. When pressure is generated in the water in the space 60 shown in FIG. 5, the water is discharged into the second tank 2 through the passage 853 and the notch 851b.

By using the spool 85 shown in FIG. 8 or the shaft 850 shown in FIG. 10, it is possible to select whether or not to supply water for hand washing in a tank type toilet, and other components are commonly used. Since it can be used, mass production is easy and cost reduction can be achieved.

Examples of the intermediate water include rainwater, water generated by dehumidification, water after washing away a developing solution adhering to a photographic negative, and the like. Anything can be applied.

The capacity of the first tank 1 is not limited to 10 times the capacity of the second tank 2, but is preferably selected as appropriate according to the frequency of use of toilets and the amount of collected water. The first tank 1 does not necessarily have to be disposed in the toilet room, but may be disposed outside and connected to the second tank 2 by piping. The first tank may have a large capacity and communicate with the second tank of a plurality of toilets.

(Second Embodiment) FIG. 12 shows another embodiment of the tank-type toilet water supply device of the present invention. FIG.
2, the third water supply device 20 is provided in the third tank 201.
0 is installed. The third water supply device 200 includes the branch passage 33.
b and the pipe 31 are not provided, and the capacity is the first tank 1
Except for the smaller point, it has the same structure as the first water supply device 20 of FIG.

The fourth tank 202 is provided with a hand washing pipe 8.
9, the cock 91, the stopper 90 and the pipe 93 are not provided, and the pipe 20 having the emergency valve 205
7 has the same structure as the second tank 2 in FIG. The valve 205 is normally closed, and is opened in an emergency such as a fire, so that water in the fourth tank 202 or a large water storage container 212 described later can be taken out through the pipe 207 as fire water.

As shown in FIG. 12, the third tank 201 and the fourth tank 202 are connected to the passage 3 of the first tank 1 shown in FIG.
2 and 33 are directly connected to the second tank 2 irrespective of the pipes 11 and 12.

As shown in FIG. 12, the third tank 201
It communicates with a large water storage container 212 via a pipe 203, a switching cock 210, and a pipe 211. Switching cock 210
Has a switching function for passing water flowing from the pipe 211 to the pipe 203 or the pipe 213, and usually allows water to flow to the pipe 203 side.

Medium water is supplied to the large water storage container 212 from the pipe 223 via the switching valve 221 and the pipe 220. The switching valve 221 normally allows water to flow to the pipe 220 side.
2 is switched when the inside is cleaned, and in this case, the water is drained from the pipe 222.

The large-sized water storage container 212 is provided with a pipe 230 at an upper portion so that the overflowed medium water can be drained. The pipe 230 communicates with the pipe 213 on the way. Water overflowing from the pipe 230 is stored in a waterproof tank or the like.

The fourth tank 202 communicates with a plurality of toilet bowls 170 via a pipe 206. When the toilet is used and the sensor 171 senses and the solenoid valve 172 opens, the fourth tank 202 opens.
The water in the fourth tank 202 is supplied to the toilet 17 via a pipe 206.
0, and is discharged from the toilet 170 to the sewage via the pipe 173.

When the water level in the fourth tank 202 drops and the buoyant body 800 drops, if there is any middle water in the third tank 201, the valve 280 opens, and the middle water in the large water storage container 212 becomes third.
Is supplied into the fourth tank 202 via the tank 201,
If there is no middle water in the third tank 201, tap water is supplied from the water pipe 204 to the fourth tank 202 via the fourth water supply device 500. With the configuration shown in FIG. 12, water can be supplied to a plurality of toilets by one tank-type toilet water supply device.

[0073]

According to the present invention, since tap water is used before using tap water, tap water can be saved. As long as there is water in the first tank, water can be flushed to the toilet even if the water is cut off. Since there is no need to use electricity for power, there is no need to worry about fires caused by earth leakage.
It is especially safe for the elderly and disabled.

[Brief description of the drawings]

FIG. 1 is a partial vertical side sectional view of a tank type toilet water supply device of the present invention.

FIG. 2 is a schematic vertical sectional side view of a first water supply device.

FIG. 3 is a schematic vertical sectional side view showing a state in which a buoyancy body is lowered in FIG. 2;

FIG. 4 is a schematic vertical sectional side view showing a state where a piston is raised and a valve is opened in FIG. 2;

FIG. 5 is a schematic vertical sectional side view of a second water supply device.

FIG. 6 is a schematic vertical sectional side view showing a state where the buoyant body is lowered in FIG. 5;

FIG. 7 is a schematic vertical sectional side view showing a state where a piston is lowered and a valve is opened in FIG. 6;

8 is a view taken in the direction of arrows VIII-VIII in FIG.

FIG. 9 is a view taken in the direction of arrows IX-IX in FIG. 5;

FIG. 10 is an arrow view corresponding to FIG. 8 when a hand washing facility is not provided.

11 is a schematic cross-sectional view taken along the line XI-XI of FIG.

FIG. 12 is a partially longitudinal side schematic view showing another embodiment of the tank-type toilet water supply device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st tank 2 2nd tank 11 Piping 12 Piping

Claims (1)

[Claims] 1. A first tank for storing rainwater or the like is provided in the first tank.
Piping to the second tank of the tank type toilet located at a lower position than the tank, when the water is flushed after using the toilet and the water level in the second tank decreases, the water in the first tank is given priority over the tap water to the second tank. A tank-type toilet water supply device that supplies water to a tank to a predetermined water level.